JP2017040432A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator in which electronic elements such as sensors or the like can be highly integrated and simplified when they are installed at a hinge part and detecting accuracy can also be improved.SOLUTION: This invention relates to a refrigerator comprising a rotary partition body having a dew condensation prevention heater at an inner surface on a counter-pivoting side of at least one of a pair of upper doors of the refrigerator in a vertical direction inside of it; a temperature sensor and a humidity sensor 144 arranged in a hinge cover 141 of the pair of doors; and control means for controlling electrical energization for the dew formation prevention heater on the basis of input at the temperature sensor and the humidity sensor 144. The temperature sensor and the humidity sensor 144 are installed in a hinge cover 141 of the other of the pair of doors different from the one of the pair of doors supporting the rotary partition body not to cause any electronic elements to be arranged near an electric path of AC voltage, resulting in that no influence of occurrence of noise by electromagnetic wave, detection of electronic elements does not produce any erroneous operation and trouble and its quality can be improved.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a refrigerator that is closed in a double door manner with left and right doors that are provided with a front opening of a storage chamber provided in an upper part of a main body.

  Large-capacity refrigerators for home use have commercialized refrigerators with many doors in each storage room along with diversification of cooling storage temperature to meet various user needs. The top freezer type with the top placed, the mid freezer type with the freezer compartment placed between the upper refrigerator compartment and the lower vegetable compartment, the bottom freezer type with the freezer compartment placed at the bottom, below the upper refrigerator compartment Various forms such as a type in which a vertically long freezer room and a vegetable room are juxtaposed and a side-by-side type in which a freezer room and a refrigerator room are juxtaposed on the left and right have been commercialized.

  In such a product environment, in recent years, considering ease of use, a refrigerator room that is frequently used and has the largest storage capacity has been placed at the top as a double door, and an ice making room and a temperature switching room are located below it. The main type is a vegetable room at the bottom and a freezer room at the bottom. When the door is closed on the inner surface of one open end of the refrigerating compartment door, it turns to the other door. A partition is attached to provide a gasket adsorption surface.

  Furthermore, in the case of the double doors in recent refrigerators, in order to prevent the outside air from entering between the left and right doors, a rotary partition that is long in the vertical direction and rotates when the door is opened and closed is provided, and the rotary partition touches the outside air. A device in which condensation is prevented by attaching a surface heater for preventing condensation on the inside of the surface is widely used. In recent years, humidity sensors that can detect not only the outside air temperature but also the outside air humidity have become widespread, and the cooling state of the refrigerator can be optimally controlled by detecting the temperature and humidity around the refrigerator. (For example, refer to Patent Document 1).

  Hereinafter, the specification of the hinge part of the conventional refrigerator is demonstrated using FIG. 11, FIG.

  On the door side in front of the top surface portion of the refrigerator, a hinge that is a connecting and fixing portion with the door is disposed, and the hinge is covered with a hinge cover that is a cover. An outside air temperature sensor for detecting the outside air temperature and a humidity sensor for detecting the humidity of the outside air are arranged in the vicinity of the hinge portion. Similarly, in the hinge portion, a harness of a surface heater and a connector connected to the inside of the rotary partition are arranged, and they are configured to be housed inside the hinge cover. Since the hinge cover is provided with a vent hole for obtaining the ventilation of the outside air, the detection accuracy is improved.

JP2013-72595A

  However, in the above conventional configuration, the external air sensor and humidity sensor electronic components that are DC weak voltage and the heater of the rotating partition that is AC 100V are arranged in the same or in the vicinity. Furthermore, in recent heater control, an SSR relay is often used, and the number of times of switching when controlling the energization rate of the heater is large. For this reason, there has been a problem that low-voltage electronic components are easily affected by alternating current noise and switching frequency.

The present invention solves the above problems, and provides a refrigerator capable of simplifying and simplifying the configuration when mounting electronic parts such as sensors on a hinge part, and improving detection accuracy. Objective.

  In order to solve the above-described conventional problems, a refrigerator according to the present invention includes a kannon door on the top of the main body, a temperature sensor and a humidity sensor disposed in a hinge cover of the kannon door, and a rotary partition of the kannon door. Condensation prevention heater provided on the body, and a control means for controlling energization to the condensation prevention heater based on the inputs of the temperature sensor and the humidity sensor, and different from a door-opening door that supports the rotating partition The temperature sensor and the humidity sensor are arranged in the hinge cover of the other kannon door.

  As a result, since no electronic component is disposed in the vicinity of the electric path of the AC voltage, it is not affected by noise generation due to electromagnetic waves, and detection of the electronic component does not malfunction or fail, leading to quality improvement.

  The refrigerator of the present invention is a highly integrated and simplified arrangement when mounting electronic parts such as a sensor for detecting the temperature and humidity of the outside air on the hinge, thereby improving the detection accuracy and preventing condensation. Energy saving and quality improvement can be achieved by minimizing input.

The front view which shows the door opening state of the double doors of the refrigerator by Embodiment 1 of this invention Side surface sectional drawing of the refrigerator by Embodiment 1 of this invention Sectional drawing of the principal part of the rotary partition of the refrigerator by Embodiment 1 of this invention Top perspective view of a refrigerator according to Embodiment 1 of the present invention AA sectional view of FIG. 4 according to the first embodiment of the present invention. Humidity sensor mounting configuration diagram according to Embodiment 1 of the present invention (A) Hinge cover surface perspective view on the right side of refrigerator according to Embodiment 1 of the present invention, (b) Hinge cover back perspective view Side surface sectional drawing of the refrigerator by Embodiment 2 of this invention Detailed sectional drawing of the heat insulation partition part by Embodiment 2 of this invention Side surface sectional drawing of the refrigerator by Embodiment 3 of this invention Refrigerator front view of conventional refrigerator Conventional refrigerator hinge configuration diagram

  The invention according to claim 1 is a kannon door on the upper part of the main body, a temperature sensor and a humidity sensor arranged in a hinge cover of the kannon door, a dew condensation prevention heater provided on the rotary partition of the kannon door, And a control means for controlling energization to the dew condensation prevention heater based on inputs of the temperature sensor and the humidity sensor, and the temperature sensor and the hinge cover of the other kannon door different from the kannon door supporting the rotating partition Due to the arrangement of the humidity sensor, the AC cord and AC connector for energizing the dew condensation prevention heater are housed separately from the housing for the DC low voltage, so noise is generated due to the electromagnetic wave effect of the AC voltage of 100V. It is possible to provide a high-quality refrigerator without worrying about detection malfunctions. Furthermore, even when designing, manufacturing, and assembling the door, the process can be simplified and the cost can be reduced by separating the alternating current and direct current.

  The invention according to claim 2 is the structure according to claim 1, wherein the top surface of the hinge cover has a different height.

This improves the detection accuracy because the surrounding space of the humidity sensor can be increased, and
Even if the hinge portion is visually observed from around the refrigerator, it is difficult to see the step, and the appearance is improved as compared with the case where the height of the entire hinge cover is increased. Further, since the strength can be improved by improving the rigidity due to the difference in height, the hinge cover alone is not easily deformed, and the hinge cover is attached during the manufacturing process, but does not come into contact with the humidity sensor. The height of the hinge cover is equal to or less than the height of the entire refrigerator, and the product dimensions do not change.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the substrate including the temperature sensor and the humidity sensor is supported by the bracket, and is a separate member from the case where the connector in the hinge cover is supported. A bracket is constructed.

  This prevents the influence of deformation of the mounting fixing part due to pressure deformation during urethane foaming, and makes it difficult to detect due to misalignment due to assembly variations in the process of attaching the humidity sensor, and prevents detection misalignment. A refrigerator with high detection accuracy can be provided because it is high and variation can be reduced.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein a rib is provided on the outer periphery of the hinge cover, and a second rib is provided inside the rib.

  As a result, a breakage or damage in the electronic board due to water splashes or insects that may occur in the usage environment of the refrigerator, or disconnection due to damage to the covering of the harness will not occur. Furthermore, since the influence of static electricity applied from metal parts such as hinges and outer shells can be prevented, a refrigerator with high safety and quality can be provided.

  According to a fifth aspect of the present invention, in the third aspect of the present invention, the case is disposed in the recess on the top surface of the refrigerator, and a bracket is disposed above the connector.

  As a result, it can be stored compactly without changing the external dimensions even in a narrow space inside the hinge cover, and the humidity sensor can be detected without being affected by the cold from the inside of the refrigerator cabinet.

  The invention according to claim 6 is the invention according to any one of claims 3 to 5, wherein the temperature sensor and the humidity sensor arranged on the bracket are arranged above the top of the refrigerator.

  This makes it difficult to stagnate because it is substantially the same horizontal plane as the communication opening opened on the outer periphery of the hinge cover, and can further improve the detection responsiveness.

  A seventh aspect of the invention is the invention according to any one of the first to sixth aspects, wherein the plurality of communication ports of the hinge cover are provided in the vicinity of the humidity sensor.

  As a result, ventilation resistance between the outside air and the humidity sensor detection unit can be reduced, so that the detection accuracy and responsiveness when the outside air humidity changes can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a front view showing a door opening state of a double door of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a side sectional view of the refrigerator according to Embodiment 1, and FIG. 3 is a refrigerator according to Embodiment 1. FIG. 4 is a top perspective view of the refrigerator according to the first embodiment, FIG. 5 is a cross-sectional view taken along line AA of FIG. 4 according to the first embodiment, and FIG. FIG. 7A is a configuration diagram of a humidity sensor according to the first embodiment, FIG. 7A is a front perspective view of the hinge cover according to the first embodiment, and FIG. 7B is a rear perspective view of the hinge cover.

  In FIG. 1, the refrigerator 101 has a left door 102 located on the left side and a right door 103 located on the right side. FIG. 1 shows a state in which the left door 102 and the right door 103 are opened. . The part where the left door 102 and the right door 103 are provided is a part of the refrigerating room 105, the lower part of the left door 102 is an ice making room 106, and the lower part is a freezing room 107 and a vegetable room 108. A switching chamber 109 is provided below the right door 103 and to the right of the ice making chamber 106.

  The left door 102 and the right door 103 are each pivotally supported by a hinge portion 146 so as to open to the left and right sides, and a rotating partition 104 is provided on the non-pivot side of the left door 102. The rotating partition 104 rotates according to the opening / closing operation of the left door 102. When the door is closed, the non-pivot side of the left door 102 and the right door 103 is closed via the door gasket 125, thereby Cold air leakage from inside 105 is prevented.

  The refrigerator compartment 105 is normally set at 1 to 5 ° C. with the temperature that does not freeze for refrigerated storage as the lower limit. The vegetable room 108 is often set to a temperature setting of 2 ° C. to 7 ° C., which is equal to or slightly higher than that of the refrigerator room 105. If the temperature is lowered, the freshness of leafy vegetables can be maintained for a long time. The freezer compartment 107 is normally set at −22 to −18 ° C. for frozen storage, but may be set at a low temperature of −30 to −25 ° C., for example, to improve the frozen storage state.

  Since the refrigerator compartment 105 and the vegetable compartment 108 are set at a plus temperature in the cabinet, they are called refrigerated temperature zones. Moreover, since the freezer compartment 107 and the ice making compartment 106 are set at a minus temperature in the interior, they are called freezing temperature zones. The switching chamber 109 can set the temperature from the refrigeration temperature zone to the freezing temperature zone.

  The top surface portion of the refrigerator 101 has a machine room 119 provided with a dent in a stepped shape toward the back surface of the refrigerator 101, and is composed of a first top surface portion and a second top surface portion. A compressor 117 disposed in the stepped recess, a dryer (not shown) for removing moisture, a condenser (not shown), a heat radiating pipe including a front heat radiating pipe 114, and a capillary tube 118 Then, the refrigerant is sealed in a refrigeration cycle in which the cooler 112 is sequentially connected in an annular manner, and a cooling operation is performed. In the machine room 119, a heat radiating machine room fan 116 is disposed between the condenser and the compressor 117. By convection in the machine room so as to take in outside air, the temperature in the machine room is lowered to dissipate heat. Improves performance. In recent years, a flammable refrigerant is often used as the refrigerant for environmental protection. In the case of a refrigeration cycle using a three-way valve or a switching valve, these functional parts can be arranged in the machine room.

  In addition, the refrigerator compartment 105, the ice making room 106, and the switching room 109 are partitioned by a first heat insulating partition 121. The ice making chamber 106 and the switching chamber 109 are partitioned by a second heat insulating partition 122. The ice making chamber 106, the switching chamber 109, and the freezer compartment 107 are partitioned by a third heat insulating partition 123.

  Since the second heat insulating partition part 122 and the third heat insulating partition part 123 are parts assembled after foaming of the refrigerator 101, the expanded polystyrene 120 is usually used as a heat insulating material, but in order to improve heat insulating performance and rigidity. Rigid foamed urethane may be used, and furthermore, a highly heat insulating vacuum heat insulating material may be inserted to further reduce the thickness of the partition structure. In this case, the internal volume can be increased.

Further, by securing the operating part of the door frame and thinning or eliminating the shapes of the second heat insulating partition part 122 and the third heat insulating partition part 123, a cooling air passage can be secured and the cooling capacity is improved. You can also. Moreover, the center part of the 2nd heat insulation partition part 122 and the 3rd heat insulation partition part 123 is hollowed, and it leads to reduction of material by making it an air path.

  The freezer compartment 107 and the vegetable compartment 108 are partitioned by a fourth partition 124.

  Here, cono-shaped metal iron plates 151, 152, 153, 154 are arranged outside the first to fourth partition portions. Each iron plate adsorbs a door gasket when the door is closed to prevent leakage of cold air from the interior. Further, a front heat radiating pipe 114 is arranged in close contact with the inner side of the iron plate to prevent the occurrence of dew condensation due to low temperature due to heat conduction by cold air from a low temperature storage chamber.

  A cooling chamber 111 covered with a cooling chamber cover 115 is provided on the rear surface of the refrigerator 101, and in the cooling chamber 111, a cooler 112 that generates fin-and-tube cold air is a heat insulating partition wall. Including the rear regions of certain second and third heat insulating partition parts 122 and 123, they are vertically arranged in the vertical direction on the back surface of the freezer compartment 107. The material of the cooler 112 is aluminum or copper.

  In the vicinity of the cooler 112 (for example, the upper space), the cold air generated by the cooler 112 is blown into the respective storage rooms of the refrigerating room 105, the ice making room 106, the switching room 109, the freezing room 107, and the vegetable room 108 by a forced convection method. A cold air blower fan 113 is disposed, and a radiant heater 136 made of a glass tube is provided in a lower space of the cooler 112 as a defrosting device for defrosting frost adhering to the cooler 112 and the cold air blower fan 113 during cooling. Yes. The defroster is not particularly specified, and a pipe heater in close contact with the cooler 112 may be used in addition to the radiant heater 136. Further, both the radiant heater 136 and the pipe heater may be used. In this case, the temperature of the cooler 112 is efficiently increased by appropriately controlling the heater energization timing of the radiant heater 136 and the pipe heater, for example. By doing so, it is possible to shorten the defrosting time and save energy. In addition, the fact that the defrosting time can be shortened leads to suppressing the temperature rise of the food in the warehouse and the food during the defrosting by shortening the non-cooling time at the time of defrosting, and also improving the freshness of the food. Become.

  The cooling chamber cover 115 is provided with ducts for blowing the cold air from the cold air blowing fan 113 into the respective storage chambers, and the cooler 112 is cooled through the same duct to the ice making chamber 106, the switching chamber 109, and the freezing chamber 107. It is blowing directly.

  On the front surface of the cooling chamber cover 115, there are provided discharge ports 132, 133, 134 for discharging cold air to the ice making chamber 106, the switching chamber 109, and the freezing chamber 107, respectively, and the flow rates of the discharge ports 132, 133, 134 are three chambers. The load is distributed according to the load ratio. A damper, which is an air volume switching device, is disposed upstream of the air outlet of the discharge port of the switching chamber 109, and the refrigeration temperature from the refrigeration temperature zone set in the switching chamber 109 by adjusting the air volume according to the storage chamber temperature. The temperature can be adjusted according to the belt.

  Although the cool air blowing fan 113 may be directly disposed in the inner box 110, it is disposed in the second partition portion 122 assembled after urethane foaming, and the manufacturing cost is reduced by performing block processing of the parts. You can also

  In the refrigerator, a heat radiating pipe mainly composed of a metal material such as copper or iron is disposed for heat radiation and for preventing surface condensation. In the present embodiment, the top surface, the back surface, and the bottom surface are arranged centering on the side surface of the refrigerator, and the front heat radiating pipe 114 is also disposed on the front surface portion where the door gasket of each storage compartment door contacts. Yes.

  Next, the rotating partition 104 will be described.

  In FIG. 3, the rotary partition 104 includes a partition plate 127 that forms the suction surface 126 of the door gasket 125, a polystyrene foam heat insulating material 128 disposed inside the rotary partition 104, a peripheral portion of the partition plate 127, and It is composed of a synthetic resin partition frame 129 that covers the outer surface of the heat insulating material 128 and a dew condensation prevention heater 130 as a heating means disposed in the center of the inner surface of the partition plate 127. In addition, between the heat insulating material 128 and the partition frame 129, a reinforcing plate 131 made of, for example, a metal plate having a small coefficient of thermal expansion is disposed in substantially the entire height of the rotary partition 104 with respect to the height direction of the refrigerator.

  In the present embodiment, the reinforcing plate 131 is disposed inside the rotary partition 104 so that the partition frame 129 covering the outer surface is made of resin, so that heat transfer from the outside is suppressed to save energy. You may arrange in. That is, it is the partition plate 127. In this case, since the function as the suction surface of the door gasket 125 can be provided, the configuration can be simplified and the cost can be reduced.

  Moreover, the dew condensation prevention heater 130 is used as a heating means. The dew condensation prevention heater 130 is attached to substantially the entire height of the partition plate 127 and energized to generate heat, thereby preventing dew condensation on the surface of the rotating partition 104 and the door gasket 125 that is in close contact therewith. Note that the surface of the rotary partition 104 tends to have a temperature distribution particularly in the vertical direction due to the temperature distribution in the refrigerator compartment 105 and the convection of the discharged cold air.

  In the present embodiment, the unit calorific value W / m of the dew condensation prevention heater is changed according to the temperature distribution. As a result, the surface temperature of the partition plate 127 of the rotating partition 104 is made uniform, there is no temperature distribution variation, and the power input can be further reduced. On the other hand, a dew condensation prevention heater using a constant W / m heater wire may be used. In this case, the manufacturing process and management process of the heater can be simplified, leading to cost reduction.

  Next, the structure of the hinge part 146 to which the humidity sensor 144 is attached will be described.

  As shown in FIGS. 2 to 6, there is a metal hinge (not shown) for attaching and fixing the refrigerator compartment door to the main body on the right side when viewed from the front of the refrigerator top surface, and a resin hinge that covers the hinge The humidity sensor 144 used in the present embodiment is disposed inside the cover 141. The hinge portion 146 includes a connector 142 that connects the hinge, a hinge cover 141 that covers the hinge, an operation board that is provided on the refrigerator door, and a control board 137 that is provided behind the top surface of the refrigerator 101, and the connector 142. And a base hinge 143 for storing the.

  The hinge cover 141 has a high height because the portion where the humidity sensor 144 is installed takes a large internal space, but the height that covers the hinge of the door portion is low and the height of the hinge cover is different. It's height. Furthermore, since it is the shape which provided the inclined surface in the refrigerator front side and the outer surface side, and it is set as the structure which cannot see a level | step difference even if the hinge part 146 is visually observed from the refrigerator periphery, compared with the case where the height of the hinge cover 141 whole is made high. The appearance is improved. In addition, the height of the hinge cover 141 is equal to or less than the height of the entire refrigerator, and the product dimensions do not change. Since the portion where the humidity sensor 144 is installed has a large internal space, it is easy to detect and leads to an improvement in accuracy, and the rigidity is increased by the difference in height of the hinge cover 141, so that the strength of the hinge cover 141 can be increased. It is difficult to deform and does not come into contact with the humidity sensor 144 when the hinge cover 141 is attached during the manufacturing process.

In addition, since it arrange | positioned in the right side seeing from the front of a refrigerator top | upper surface part, the refrigerator compartment left side door 102 in which the rotation partition 104 is arrange | positioned supplies with electricity to the dew condensation prevention heater 130 which is a heating means for temperature guarantee. Separated from the storage of the cord and the AC connector, it is stored for low voltage. Thereby, there is no fear of detection malfunction due to noise generation due to the influence of electromagnetic waves of an AC voltage of 100 V, and a high-quality refrigerator can be provided.

  If it is unavoidable to install AC voltage and DC voltage, high voltage and low voltage harnesses close to the same hinge or door, depending on product specifications and assembly methods, sufficient noise countermeasures should be taken. Need to be implemented. Therefore, in addition to the harnesses not crossing or contacting each other, a method of separating a distance of 100 mm or more may be used.

  Next, the mounting configuration of the humidity sensor 144 will be described.

  The humidity sensor 144 is installed inside the hinge cover 141, but needs to be fixed in consideration of the assembly process and interference with other parts. Therefore, in this embodiment, first, the humidity sensor 144 is fixed to the bracket 145 of the sensor receiver, and the bracket 145 and the base hinge 143 are disposed and fixed together. That is, it is supported by a bracket 145 made of a member different from the base hinge 143 on which the connector 142 inside the hinge cover 141 is supported.

  When the humidity sensor 144 is not mounted with an electronic component, a round communication port is opened, and a protrusion having the same dimension or less is projected from the bracket 145. When the humidity sensor 144 is attached to the bracket 145 By connecting the communication port and the protrusion, not only the nail fixing but also the multiple fixing is realized.

  Although the humidity sensor 144 is a small module substrate, it is a production process in which a plurality of substrates are created at a time and divided. For this reason, there is a case in which a part after the joint remains slightly on the end surface portion of the substrate when dividing. Therefore, the nail | claw in the case of supporting the humidity sensor 144 on the bracket 145 is fixing avoiding the joint part of a board | substrate and the mounting part currently mounted in the board | substrate itself. As a result, malfunctions are eliminated due to damage to the humidity sensor 144 by the bracket 145 in the mounting process or the like.

  In addition, the bracket 145 has a shape that follows the internal shape of the base hinge 143, and is further provided with a claw provided from the base hinge 143, so that the position of the humidity sensor 144 is fixed. Thereby, it becomes difficult to detect when the humidity sensor 144 is displaced due to mounting or assembly variations, and the detection displacement is prevented.

  The bracket 145 of the humidity sensor 144 is disposed on the connector 142. As a result, in addition to being able to be compactly accommodated in a configuration utilizing a small space inside the hinge cover 141 and arranged without changing the outer dimensions, the detection part of the humidity sensor 144 floats in the height direction in the space, Since it can be detected without stagnation of air and also not easily affected by the cooling heat from the inside of the refrigerator cabinet, the detection accuracy is improved.

  Further, since the humidity sensor 144 and the bracket 145 are three-dimensionally arranged on the connector 142, it is not necessary to change the outer dimensions of the hinge cover 141. As a result, the mold required in the manufacturing process of the hinge cover 141 does not change in size, so the same molding machine can be used, and the mold cost does not fluctuate greatly. Moreover, if it is possible to create a new mold by remodeling the current mold without creating a new mold depending on how to make the mold, the cost will be greatly reduced.

Furthermore, from the viewpoint of the manufacturing process of the refrigerator, the base hinge 143 and the connector 142 are arranged in the previous stage of the urethane foaming process to reduce the production man-hour for assembling the refrigerator. In addition, when the humidity sensor 144 is accommodated after being attached to the bracket 145 at a later stage of the urethane foaming process, the ambient temperature becomes high (approximately 60 ° C. in summer) due to the heat of foaming in the urethane foaming process, or urethane. The deformation of parts due to high pressure during foaming is not affected. In particular, the base hinge 143 is made of resin from the standpoint of static electricity, but the bottom surface tends to be convex due to the foaming pressure during urethane foaming. In this case, if it is configured to be directly attached to the base hinge 143 instead of the bracket 145, the flatness is not stabilized due to the pressure deformation at the time of urethane foaming, which causes a variation depending on the season and time. In particular, although the amount of urethane in the refrigerator body depends on the amount of vacuum heat insulating material, piping, and wiring components provided inside, the pressure at the time of foaming is large because the amount is approximately 5 kg. Therefore, a jig is used to suppress deformation. However, it is possible to suppress deformation with a jig for a large flat portion such as an outer wall or an inner box, but the hinge portion 146 including the base hinge 143 has a small range and is difficult to suppress with a jig. Easy to deform. In particular, the portion filled with urethane heat insulating material of the refrigerator having a height of close to 2 m and having a hollow inside is generally the outer wall portion, and during urethane foaming, there are cavities and cracks that affect the cooling performance of the refrigerator body. Since it is necessary to foam as much as possible, in consideration of fluidity, the filling amount may be slightly increased. For this reason, the foaming pressure becomes high, and it may be easily deformed depending on the surrounding environment during production. In this embodiment, since the humidity sensor 144 is housed after being attached to the bracket 145 at a later stage of the urethane foaming process, the humidity sensor 144 can be disposed without being affected by pressure deformation during urethane foaming. Therefore, the attachment accuracy of the humidity sensor 144 is high, and variation can be reduced, so that a refrigerator with high detection accuracy can be provided.

  Moreover, the arrangement of the humidity sensor 144 is located above the reference surface of the refrigerator top surface in the vertical direction. Thereby, it is substantially the same horizontal plane as the communication opening opened on the outer periphery of the hinge cover 141, it is difficult to stagnate, and the detection accuracy by air convection is further improved.

  Further, the hinge cover 141 is provided with a plurality of communication ports 150 in which outer peripheral ribs are partially cut away. As a result, the outside air on the top surface of the refrigerator main body can be easily taken into the hinge cover to improve the detection accuracy. At this time, the communication port 150 is in the vicinity of the humidity sensor 144 provided inside the hinge cover. In the present embodiment, the humidity sensor 144 is provided in a path connecting the ends of the communication ports 150 in order to improve detection accuracy.

  Further, a second rib 148 is provided inside the notched communication port 150. The second rib 148 prevents water from entering the humidity sensor 144 and the connection portion of the humidity sensor 144 which are electronic components even if water is splashed in the usage environment of the refrigerator. In addition, a plurality of slits 149 for communicating with the inside of the hinge cover are opened in the second rib 148 toward the upper side of the humidity sensor 144 rather than substantially horizontal. In addition, a slit is also opened in the horizontal direction between the second rib 148 and the inside of the hinge cover. As a result, ventilation resistance between the outside air and the inside of the hinge cover where the humidity sensor 144 is arranged is relaxed, and good detection accuracy and responsiveness are realized. In addition, the dimension of this slit 149 is 0.5 mm or less in the width direction. As a result, insects can be prevented from invading, and therefore, disconnection or the like does not occur due to damage to the electronic components or damage to the harness covering by the insects. Particularly overseas, small insects such as ants may invade depending on the installation environment, so the dimension of the slit 149, which is a dimension that cannot be entered even by small insects, is 0.5 mm or less in the width direction.

  Further, by providing the second rib 148, the static electricity influence on the humidity sensor 144 is also prevented. In particular, static electricity is likely to be generated during drying in winter, but it is necessary to prevent malfunction or failure of the humidity sensor 144 that is an electronic component due to the influence of static electricity. Therefore, the creepage distance from the top surface portion of the refrigerator outer wall and the metal portion of the hinge 140 where static electricity is likely to be applied can be secured by providing the second rib 148, so that the humidity sensor 144 may malfunction or break down due to static electricity. There is no.

  Next, the humidity sensor 144 used in this embodiment will be described.

  There are various types of humidity sensors 144, and there are Asman meters based on thermodynamic principles and electronic types such as resistance type and capacitance type whose electrical characteristics change as moisture is absorbed and desorbed. The humidity sensor 144 used in the embodiment uses a capacitance type in which the capacitance of the electrode changes according to the amount of moisture by the moisture-sensitive film absorbing moisture. This is because the relative humidity of the outside air and the detected humidity to be detected can accurately produce a linear characteristic within the 0 to 100% relative humidity detection range. Accordingly, when the humidity sensor 144 itself gets wet due to water or condensation, or when the humidity sensor 144 is below the dew point temperature, the detected humidity can be determined to be 100%.

  It is also possible to use other resistance type humidity sensors which are electronic. In this case, from the advantage that production is easy with respect to the capacity type, it is possible to reduce the cost of the single unit and also to reduce the cost of the product itself.

  In addition, the humidity sensor 144 includes not only the humidity detected by itself but also a thermistor (not shown) that detects the temperature on the same substrate. Since this thermistor erroneously detects that the temperature fluctuates excessively, it is desirable that the thermistor be separated from the part where the heat fluctuates so as not to be affected by the temperature. In the refrigerator, a pipe mainly composed of a metal material such as copper or iron is disposed for heat dissipation and surface condensation prevention, and therefore the distance from the pipe is 80 mm or more in this embodiment. In addition, heat is transferred from the pipe to the iron plate that covers the outer wall of the refrigerator, and the temperature of the outer wall surface is set to be higher than the dew point temperature of the outside air, thereby preventing the occurrence of condensation. Separated. As a result, even if static electricity is generated, it is difficult to apply it to the elements and connection parts of the electronic component, so that static electricity is also handled at the same time.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  For example, when the refrigerator compartment 102 rises in temperature due to heat intrusion from outside air, door opening and closing, etc., and the refrigerator compartment sensor (not shown) exceeds the startup temperature of the compressor 117, the compressor 117 is started. Cooling in the storage is started. While the high-temperature and high-pressure refrigerant discharged from the compressor 117 finally reaches a dryer (not shown) disposed in the machine room 119, heat is dissipated particularly in a condenser (not shown) or the outer box 124. A pipe (not shown) is cooled and liquefied by heat exchange with the air outside the outer box 124 and the urethane heat insulating material 126 in the warehouse.

  Next, the liquefied refrigerant is decompressed by the capillary tube 118, flows into the cooler 107, and exchanges heat with the internal air around the cooler 107. The cold air that has undergone heat exchange is blown into the cabinet by a nearby cool air fan 113 to cool the inside of the cabinet. Thereafter, the refrigerant is heated and gasified, and returns to the compressor 117. Then, when the inside of the refrigerator is cooled and the temperature of the freezer compartment sensor (not shown) becomes equal to or lower than the stop temperature, the operation of the compressor 117 is stopped.

  In the present embodiment, the cold air heat-exchanged by the cooler 107 for cooling the interior is agitated in the interior by the nearby cool air blow fan 113, but the cool air blow fan 113 may be omitted. The cold air blower fan 113 is not mounted on a small refrigerator of 150 L or less in Japan, or a mainstream direct cooling refrigerator in an area where the outside air humidity is low even overseas. Some refrigerators do not have the machine room fan 116 not only inside but also outside the cabinet. In the present embodiment, a compressor 117 and a condenser (not shown) are provided in the machine room 119, and the machine room fan 116 is operated in a high / medium / outside air region where the outside air temperature is high in order to improve the efficiency of the refrigeration cycle. .

  The refrigerator performs a cooling operation by repeating the above operation cycle.

  While the refrigerator performs the cooling operation, the rotating partition 104 is cooled by the temperature effect of the refrigerator compartment 105 that has become low temperature. At this time, the surface temperature of the air release portion of the partition plate 127 is lowered, and the quality is obtained by energizing the dew condensation prevention heater 130 which is a heating prevention means in order to compensate for this and to make the dew point temperature or more based on the temperature and humidity of the outside air. Is secured. In the present embodiment, the partition plate 127 that forms the suction surface 126 of the door gasket 125 of the rotary partition 104 is made of synthetic resin, and has a lower thermal conductivity than that of an iron plate. The heater energization rate for maintaining the dew point temperature of 23.9 ° C. at 70 ° C. and 70% can be reduced by about 10% compared to the case where the partition plate 127 is an iron plate, thus realizing a reduction in power consumption. . This is because the partition plate 127 with which the door gasket 125 comes into contact is made of a synthetic resin having a low thermal conductivity, so that a decrease in the temperature of the open portion of the partition plate 127 is suppressed.

  Furthermore, in the present embodiment, a humidity sensor 144 is mounted inside the hinge portion 146 on the top of the refrigerator. The detection of the humidity sensor 144 and the temperature sensor disposed on the substrate of the humidity sensor 144 is always detected after the refrigerator is turned on and the operation operation is started, and a predetermined calculation is performed by the control means on the control board of the refrigerator. Using the equation, the detected voltage is converted into temperature or humidity. This makes it possible to appropriately control the energization rate of the dew condensation prevention heater 130 using the detected humidity and temperature of the outside air, leading to a reduction in power consumption. This is because if the humidity sensor 144 is not installed, the outside air humidity cannot be detected, so it is not known whether the surface of the partition plate 127 has reached the dew point temperature. For this reason, the energization rate is set assuming that the temperature detected by the outside air temperature sensor, that is, the relative humidity is 100% or more, but the relative humidity is detected by the humidity sensor 144 as in the present embodiment. Therefore, the dew point temperature can be calculated from the temperature and the relative humidity, and the energization rate of the heater can be reduced to near the dew point temperature. In the present embodiment, the heater energization rate is set according to the relative humidity detected and calculated by the humidity sensor 144 so that a dew point temperature of + 2K or higher can be secured in consideration of variations in products and installation environments. Compared to setting the heater energization rate only at the outside temperature, which ensures an energization rate that does not cause condensation even at high humidity, the energization rate can be greatly reduced, especially at low humidity when the dew point temperature is low, thus saving energy throughout the year. Furthermore, there is not only an energy saving effect by reducing the heater input by reducing the heater energization rate, but also an energy saving effect by reducing the heat load entering the cabinet. In the present embodiment, this is due to a reduction in the heater energization rate of the rotating partition 104, and the heat transfer when the heater is energized is approximately 7: 3 between the outside and the inside of the cabinet, and there is a heat intrusion inside the cabinet. Is known experimentally. Therefore, not only the effect of reducing the heater input by reducing the heater energization rate, but also the reduction of the cooling load by reducing the heat load to the interior can reduce, for example, the number of revolutions of the compressor 117, and thus further energy saving effect can be obtained.

  Here, in the present embodiment, the energization rate to the dew condensation prevention heater 130 is determined by the relative humidity calculated according to the humidity detected by the humidity sensor 144, but the humidity and temperature detected by the humidity sensor 144, The humidity of the outside air is calculated by using the calculated absolute humidity and the temperature detected by the outside air temperature sensor of the refrigerator main body. Electricity is supplied by subtracting the electricity supply rate for low humidity from the electricity supply rate determined by the outside air temperature based on the humidity calculated from these.

When the humidity sensor 144 is mounted, the humidity may vary depending on the usage environment as well as the humidity variation due to the natural environment. For example, it is during air conditioning cooling in summer, air conditioning heating in winter, or oil fan heater heating. In this case, depending on the installation environment, when the air conditioner is in the vicinity of the air-conditioning air passage or directly, the humidity changes rapidly and it takes time until the temperature and humidity in the room is stabilized. May detect different from actual temperature and humidity. In this embodiment, since the absolute humidity is also calculated with respect to the calculated relative humidity, the temperature detection is high and the humidity detection is low when the wind hits during heating, but the influence of absolute humidity is Because it is small, it is difficult to falsely detect and a high-quality refrigerator can be provided. In reverse cooling, the air is dehumidified as apparent from the air diagram, but since the change in absolute humidity is known, the humidity sensor 144 is not erroneously detected and is stable. Control can be performed. By performing the detection control as described above, a stable and high-quality refrigerator can be provided without erroneous detection by the humidity sensor 144.

  Regarding the installation of the humidity sensor 144, in the present embodiment, the humidity sensor 144 is mounted on the hinge portion 146, but this is not the case if the outside air humidity can be accurately detected. In this embodiment, considering the appearance of the refrigerator, the product specifications inside the refrigerator, the domestic and foreign refrigerator product lineup, the manufacturing process, and the sharing of parts, it is mounted on the base hinge 143, but mounted on the hinge cover 141 side. You may do it. In this case, the configuration for installation and installation can be simplified, and the mold cost can be suppressed, so that the production cost for the entire product can be suppressed, and a low price selling price can be realized. Moreover, you may mount in the door part of the left side door 102 or the right side door 103. FIG. In this case, it is possible to accurately detect the humidity of the outside air without being affected by the operation state of the refrigerator or the heat radiation from the compressor 117 and the condenser. At this time, you may mount on operation boards, such as a temperature setting and illumination intensity sensor currently mounted in the refrigerator door of recent years. As a result, it is possible to reduce the number of components, the management cost, and the installation space by integrating with the operation board. Moreover, you may mount in the machine room 119. In this case, particularly in the vicinity of the machine room fan 116 installed for promoting heat dissipation, the humidity such as when it rains or the surroundings are humidified due to the circulation of outside air by forced convection of the fan. Even in a situation where it fluctuates, detection with very high responsiveness can be realized. In this case, it is less likely to be affected by dust due to inflow of outside air by being installed at a location slightly away from the convection mainstream upstream of the machine room fan 116.

  Further, energy can be saved by detecting the surface of the partition plate 127 with higher accuracy. In this case, a non-contact type detection sensor such as a thermopile is disposed in the vicinity of the partition plate 127 and directly detects the surface temperature, thereby enabling heater control to be equivalent to the dew point temperature detected and calculated by the humidity sensor 144. Thus, further energy saving is possible.

  As a refrigerant in recent refrigeration cycles, isobutane, which is a flammable refrigerant with a low global warming potential, is used from the viewpoint of global environmental conservation. This hydrocarbon, isobutane, has a specific gravity of about twice that at normal temperature and atmospheric pressure (at 2.04 and 300K) compared to air. If isobutane, which is a flammable refrigerant, leaks from the refrigeration system during operation and stop of the compressor 117, it leaks downward because it is heavier than air. In particular, when leaking from a condenser with high pressure in the cooling system, the amount of leakage may increase, but the hinge part 146 in which the humidity sensor 144 is disposed is disposed on the top surface of the refrigerator, and Since it is above the installation of the capacitor, it does not leak to the humidity sensor 144 even if it leaks, and the vicinity of the humidity sensor 144 is extremely low in combustible concentration.

(Embodiment 2)
FIG. 8 is a side sectional view of a refrigerator according to Embodiment 2 of the present invention, and FIG. 9 is a detailed sectional view of a heat insulating partition. In addition, about the same structure as Embodiment 1, the same code | symbol is attached | subjected and a different part is demonstrated.

  8 and 9, the first to fourth heat insulating partition portions 121, 122, 123, and 124 are filled with foamed polystyrene 120 and foamed urethane on the back side as in the first embodiment. . A metal iron plate 153 having a conical shape is arranged on the outer side of the heat insulating partition. Each iron plate adsorbs a door gasket when the door is closed to prevent leakage of cold air from the interior. Furthermore, a surface heater 158 that is a heating means is disposed inside the iron plate so as to be in close contact with the metal iron plate 153, so that the dew condensation caused by the heat conduction by the cold air from the low-temperature storage chamber is reduced. Occurrence is prevented.

In the present embodiment, the energization rate of the voltage applied to the surface heater disposed in each heat insulating partition is calculated using the relative humidity value calculated according to the humidity detected by the humidity sensor 144. By deciding, it becomes an energization rate according to the dew point temperature, and energy is saved throughout the year. Compared with the case of preventing the condensation of the steel plate portion by the conventional front heat radiating pipe 114, the heater can be controlled by the humidity sensor 144 so that the temperature is close to the dew point temperature. In addition, the adhesion between the heater and the iron plate is improved. This is because it increases compared with the case of 114.

  When a conventional heat radiating pipe is arranged, the generally circular pipe and the iron plate are in line contact, so there is a member for promoting heat transfer from the heat radiating pipe to the iron plate inside the iron plate and a buffer material ridge for press contact. Although it was necessary, it is because it becomes possible to contact an iron plate and a heater by a surface by using a surface heater, and the contact | adherence area to an iron plate increases. At this time, the same applies to the case where the heat radiating pipe is an elliptical flat tube.

  It should be noted that excessive heat is generated even in the case of the same heater control by individually setting the distribution of the capacity W and W / m and W / m of the surface heater 158 as a heating means according to the adjacent internal temperature zone. It is possible to achieve the optimum surface temperature without any problems. For example, the portion adjacent to the refrigeration temperature zone has a large capacity because the temperature difference with the outside air is large, and the portion adjacent to the refrigeration temperature zone has a small capacity with a small temperature difference with the outside air. The surface heater 158 may be a method of individually controlling the energization rate. In this case, since W / m of the heater can be unified in order to obtain an equivalent surface temperature, the cost can be reduced including sharing of parts.

  Note that the surface temperature of the iron plate can be made uniform by changing the unit calorific value W / m of the heater in accordance with the temperature distribution, the temperature distribution variation can be eliminated, and the power input can be further reduced. On the other hand, a heater using a constant W / m heater wire may be used. In this case, the manufacturing process and management process of the heater can be simplified, leading to cost reduction.

  In this embodiment, the metal iron plate 153 has a cono shape that is bent approximately 90 degrees inside the cabinet, but the end face portion may be bent 180 degrees inside. In this case, heat penetration from the outside air, heat radiating pipe, and heat from the heater is transferred to the inside of the warehouse through the end face, leading to energy savings by reducing the cooling load in the warehouse, and from inside the warehouse. Since the heat transfer of the cold can be suppressed, the surface temperature of the iron plate also rises. When the surface heater is provided, it is possible to reduce the energization rate, leading to energy saving.

  Moreover, you may change the material of an iron plate into resin. In this case, since heat transfer to the inside of the warehouse is suppressed, further energy saving is achieved. This is because, as can be seen from the material characteristics, the heat conductivity of resins such as ABS, PS, and PP is lower than that of the iron plate. At this time, by integrally molding the first to fourth heat insulating partition parts made of resin, it becomes a good-looking refrigerator without misalignment due to the fitting of parts, and costs are reduced by reducing the number of parts and management costs by reducing the number of parts You can also go down.

  In addition, changing the foamed polystyrene 120 installed inside to foamed urethane with high thermal insulation performance also improves the thermal conductivity that represents thermal insulation performance by about three times, which can further reduce the required heater capacity. , Can save energy. In addition, since the urethane is poured into the interior and foamed rather than the molded foamed polystyrene, the strength of the heat insulating partition itself can be increased by close contact with surrounding parts. An increase in the strength of the heat insulating partition that bridges the refrigerator in the lateral direction leads to an increase in the strength of the refrigerator body, and thus a robust and strong refrigerator can be provided. In particular, as the refrigerator trend in recent years, the capacity of the cabinet has been increasing, but the dimensions in the depth and height directions are mostly determined by the home kitchen space. For this reason, it is necessary for a large-capacity refrigerator to secure a capacity in the width direction, and in recent years, the dimensions have expanded to about 700 mm to 800 mm. When the main body width of the refrigerator increases, the door width increases, and when the door is opened, the weight of food stored in the door travels through the door and affects the main body strength. Therefore, when the strength of the heat insulating partition is increased, the strength of the main body is also increased. In addition, if the connection part of a heat insulation partition part and a main body is fixed with an iron plate etc., it will become still stronger.

  In the refrigerator having the above configuration, in the present embodiment, the relative humidity value calculated according to the humidity detected by the humidity sensor 144 is used in the refrigerator in which the humidity sensor 144 is disposed and the heater is disposed in the heat insulating partition. Since the heater energization rate is calculated and determined, the energization rate is in accordance with the dew point temperature determined from the temperature and humidity, so energy is saved throughout the year.

  In addition to the energy saving effect of the heat insulating partition part, the heat intrusion from the side part of the refrigerator compartment or freezer room in which the front heat radiating pipe 114 is disposed can be reduced, which further increases the energy saving effect. In this case, there is a concern about condensation because there is no heat source on the side of the freezer compartment, but dew condensation is caused by moving the side heat-dissipating pipe arranged on the side to the door, which is the front of the refrigerator. Does not occur.

(Embodiment 3)
FIG. 10 is a side sectional view of a refrigerator according to Embodiment 3 of the present invention. The same components as those in the first and second embodiments are denoted by the same reference numerals, and different portions will be described.

  In the refrigeration cycle shown in FIG. 10, the compressor 117 passes through a condenser (not shown) and the heat radiating pipe including the front heat radiating pipe 114, the capillary tube 118, and the cooler 112 are sequentially connected in an annular shape. In the machine room 119, a control valve 139 is provided to adjust the flow path of the refrigerant sealed in the refrigeration cycle.

  At this time, the control valve 139 is connected between the capacitor and the heat radiating pipe, and particularly when the front heat radiating pipe 114 is used as a flow path, and when the front heat radiating pipe 114 is not used as a flow path through the bypass pipe, Has been switched. Thereby, since a high-temperature refrigerant does not pass through the heat-insulating partition part, it is possible to reduce intrusion of heat flowing from the heat radiating pipe to the inside of the warehouse. Therefore, energy can be saved by reducing the cooling load in the cabinet. Here, the refrigerant flowing into the front heat radiating pipe 114 disposed in each heat insulating partition portion has an energization rate that is a ratio of the time during which it flows in by switching the control valve 139 and the time during which it does not flow. The energization rate is calculated and determined using the relative humidity value calculated according to the humidity detected by the humidity sensor 144. As a result, by setting the energization rate according to the dew point temperature, the heat intrusion by the high-temperature refrigerant from the heat radiating pipe that is higher than the outside air is reduced, the cooling load is reduced, and the compressor 117 can also be reduced in the number of rotations throughout the year. It becomes energy saving.

  In addition, although the arrangement position of the control valve 139 is the upper part of the refrigerator in the machine room 119 in the present embodiment, it may be the machine room in the lower part of the refrigerator.

  Although the control valve 139 is used for switching the flow path in the present embodiment, it may be a control valve for adjusting the flow rate. When switching the above-mentioned valve, the front heat radiating pipe 114 alternates between a high temperature in which the refrigerant flows and a low temperature in which the refrigerant does not flow, and the average temperature is lowered according to the energization rate to approach the dew point temperature. In the case of flow rate adjustment, the average temperature of the refrigerant is brought close to the dew point temperature by adjusting the circulation amount of the refrigerant.

  In the present embodiment, the refrigerant flow path flowing through the front heat radiating pipe 114 is switched by the control valve 139, but in addition to the front heat radiating pipe 114, a side heat radiating pipe (not shown) and a rear heat radiating pipe (not shown). ) Or may be switched independently. In this case, sufficient heat dissipation capability of the capacitor is ensured, so that heat dissipation is not insufficient and energy saving can be realized by reducing heat penetration. In particular, in the case of low to medium outside air, there is a possibility that the refrigerant will be in an overcondensed state due to excessive heat dissipation. Therefore, the ability to adjust the heat dissipation capability can provide a high quality refrigerator from low to high outside air.

  As described above, the refrigerator according to the present invention has electronic components such as a humidity sensor arranged in the hinge part without being affected by noise, and the humidity sensor is improved while improving the detection accuracy and maintaining the appearance quality at a high level. Since the dew condensation prevention means is controlled by detecting this, the amount of power consumption can be reduced, so that it can also be applied to commercial refrigerators. Moreover, in order to detect the temperature and humidity of the outside air, it can be applied to the control of the evaporation mechanism and the surface condensation on the transparent door where the inside of each storage room of the refrigerator can be visually observed. Therefore, it can be used for household refrigerators and the like for the purpose of reducing the energy-saving running cost and improving the texture of the finished product in consideration of the environment.

101 Refrigerator 104 Rotating partition 130 Condensation prevention heater 141 Hinge cover 142 Connector 143 Base hinge (case)
144 Humidity sensor 145 Bracket 146 Hinge part 147 Outer peripheral rib 148 Second rib 150 Communication port

Claims (7)

Kannon-type door at the top of the main body, a temperature sensor and a humidity sensor arranged in a hinge cover of the Kannon-type door, a dew condensation prevention heater provided on the rotary partition of the Kannon-type door, the temperature sensor and the humidity sensor Control means for controlling energization to the dew condensation prevention heater based on the input of the temperature sensor and the humidity in the hinge cover of the other kannon door different from the kannon door that supports the rotary partition Refrigerator with sensors. The refrigerator according to claim 1, wherein the top surface of the hinge cover has a structure having different heights. The refrigerator according to claim 1 or 2, wherein the substrate including the temperature sensor and the humidity sensor is supported by a bracket, and the bracket is configured by a member different from a case in which a connector in the hinge cover is supported. The refrigerator according to any one of claims 1 to 3, wherein a rib is provided on an outer periphery of the hinge cover, and a second rib is provided inside the rib. The refrigerator according to claim 3, wherein the case is disposed in a recess on the top surface of the refrigerator, and the bracket is disposed above the connector. The refrigerator according to any one of claims 3 to 5, wherein the temperature sensor and the humidity sensor arranged on the bracket are arranged above the top of the refrigerator. The refrigerator according to any one of claims 1 to 6, wherein a plurality of communication ports of the hinge cover are provided in the vicinity of the humidity sensor.

Images