JP3726357B2 - Hot air heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technology of a hot air heater having a function of removing biological particles in air and sterilizing.
[0002]
[Prior art]
Conventionally, this type of purification or sterilization apparatus is generally known as shown in, for example, Japanese Patent Application Laid-Open No. 4-288181. The configuration will be described below with reference to FIG. As shown in FIG. 4, the air induced by the blower 20 passes through a suction port 21 and a filter 22 carrying a catalyst provided on the upstream side of the blower 20, and is discharged into the room from the blowout port 23. Has been. The filter 22 captures biological and non-biological particles and purifies the non-biological particles with a catalyst. Alternatively, as shown in JP-A-61-217991 or JP-A-1-249018, in addition to the filter 22, an ultraviolet lamp or an ozonizer that generates ozone is provided to sterilize biological particles. .
[0003]
[Problems to be solved by the invention]
However, the conventional purification or sterilization apparatus described above has a problem that the biological particles cannot be sufficiently sterilized by the filter carrying the catalyst or the antibacterial antifungal treatment when the non-biological particles cover the filter surface. Furthermore, since low-pressure mercury ultraviolet lamps currently used have low irradiation intensity, measures such as increasing the irradiation time and increasing the number of lamps are necessary to maintain the sterilizing power. For this reason, when ultraviolet sterilization is used, its controllability and complexity of maintenance are problematic. Further, when using ozonizer, there is a problem that a catalyst for decomposing excess ozone or an adsorbent for adsorbing ozone is newly required to suppress secondary contamination by ozone.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a downstream of the heat source. And a filter for trapping made of a heat resistant material and a filter provided at the suction port, and also has a control unit that varies the amount of heat generated or the amount of air blown.
[0005]
Therefore, according to the present invention, the system can be divided into a system that traps biological particles in the trap filter by normal operation and a system that kills the captured biological particles that are performed at the start of operation by changing the calorific value or the air flow rate. And it can be killed effectively in a short time by the system that kills only the particles of microorganisms captured by the trap filter. Therefore, the sterilizing power does not decrease with time, and maintenance is not necessary.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 is provided on a downstream side of the heat source device, a heat source device capable of changing a heat generation amount, an air passage having a plurality of openings surrounding the heat source device, a blower capable of changing a blast amount, and the heat source device. Provided with a filter for traps made of heat-resistant materials and a filter provided at the suction port, and a control unit that sets the heat generation amount or air flow rate, or the heat generation amount and air flow rate to the rated value or higher at the start of operation. Therefore, it is divided into a system that traps biological particles in a trap filter, a system that kills captured biological particles by heat, and a system that controls the killing temperature. A wind heater can be realized.
[0007]
In the invention according to claim 2, when the operation is less than the rated maximum calorific value, the air flow rate is regularly set to the maximum rated value or more and the control unit is provided, so that the biological particles that are suddenly abrupt in nature It is possible to realize a warm air heater capable of killing biological particles even under the condition of an air flow rate that cannot cope with the increase in the amount of air.
[0008]
The invention according to claim 3 is originally provided with a control unit that sets the heat generation amount or the air flow rate, or both the heat generation amount and the air flow rate for a predetermined time at the time of operation less than the rated maximum heat generation amount. Therefore, it is possible to realize a warm air heater capable of killing biological particles even under a calorific value that cannot cope with a sudden increase in biological particles in the room.
[0009]
The invention according to claim 4 is provided with a louver that can change the blowing direction of the warm air provided at the outlet, and has a control unit that sets the louver downward for a certain period of time at the start of operation or periodically. By this, the biological particles falling on the floor surface where the hot air reaches are killed.
[0010]
In the invention according to claim 5, when the operation is stopped, the blower is first stopped, the heat source device is stopped after a certain time, and the control unit for operating the blower again for a certain time is provided. It is discharged into the room from the inlet, not from the outlet. At this time, the biological particles trapped on the filter are killed.
[0011]
The invention according to claim 6 is provided with a bypass air passage, and the air passage opening area is configured so that an air flow amount passing through the bypass air passage is equal to or less than an air flow amount passing through the air passage. Thus, it is possible to suppress an increase in hot air temperature due to an increase in ventilation resistance of a normal air path. Moreover, since the air flow rate of the bypass air passage is set to be equal to or less than the air flow rate of the normal air passage, the air flow amount passing through the trap is not extremely reduced.
[0012]
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
(Example 1)
FIG. 1 is a longitudinal sectional view of a hot air heater according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a heat source machine composed of a gas burner. Reference numeral 2 denotes an air passage having openings above and below, and surrounds the heat source unit 1. Reference numeral 3 denotes a blower, which is a cross flow fan type, and is located downstream of the heat source unit 1 and the air passage 2. 4 is a suction port filter provided on the upstream side of the blower 3 and is charged. Reference numeral 5 denotes a biological particle trapping filter provided on the downstream side of the heat source device 1. The trap filter 5 is made of a heat-resistant material and has a plurality of vent holes. Reference numeral 6 denotes a control unit configured to control the amount of heat generation or the amount of blown air, or the amount of heat generation and the amount of blown air both at the maximum rated value or higher at the start of operation.
[0013]
In the above configuration, when normal operation is performed, the trapping filter 5 is supplemented with biological particles and the like. At the start of the operation, since the biological particles on the floor soar into the room air by the entry and exit of the person and the operation of the blower 3, it is necessary to quickly kill these floating biological particles. In this embodiment, since the temperature of the hot air passing through the trap filter 5 can be increased by increasing the calorific value at the start of operation, the killing speed of the biological particles can be increased. Or since the amount of warm air which passes the filter 5 for traps increases by increasing air flow rate, the capture amount of the biological particle per time can be raised. Therefore, the removal rate of biological particles can be increased. Further, if the heat generation amount and the air blowing amount are increased at the same time, the indoor object particles can be killed in a shorter time.
[0014]
In addition, when the controller 6 operates less than the rated maximum heat generation amount, the control unit 6 periodically controls the air flow rate to be greater than the rated value, and the heat generation amount or air flow rate, or the heat generation amount and air flow rate are both constant. By adopting the control that maximizes the rated value only for the time, the biological particles can be killed at high speed even under the condition of low calorific value that cannot be dealt with suddenly.
[0015]
Further, when the operation is stopped by the control unit 6, the blower 3 is first stopped, and the heat source unit 1 is stopped after a certain time. As a result, the high-temperature air is released into the room not from the air outlet 7 but from the air inlet 8 by a draft action. At this time, the biological particles captured on the filter 4 can be killed. Biological particles that may propagate on the filter 4 can be killed each time the operation of the hot air heater is terminated. In addition, after the heat source unit 1 is stopped, the blower 3 is rotated again for a predetermined time for cooling the main body.
[0016]
(Example 2)
FIG. 2 is a longitudinal sectional view of the hot air heater according to the second embodiment of the present invention. The main components are the same as in FIG. 1, but the outlet louver 9 is variable. Control that sets the louver 9 downward for a predetermined time is taken in at the start of operation or periodically. Many biological particles floating in the air fall on the floor in 20-30 minutes. Therefore, it is necessary to kill the biological particles that have fallen on the floor or to float them again in the room air.
[0017]
According to the configuration of the present embodiment, the warm air that has passed through the louver 9 diffuses into the room along the floor surface. In this process, the biological particles on the floor are killed and a part is suspended in the air. The suspended biological particles flow in from the suction port 8 of the hot air heater, and are captured by the trap filter 5 and killed. The louver 9 is directed downward at the start of the operation or periodically for a fixed time. This is to avoid the warm air flowing along the floor surface, which may cause discoloration of the flooring.
[0018]
(Example 3)
FIG. 3 is a longitudinal sectional view of a hot air heater according to Embodiment 3 of the present invention. The main components are the same as those in FIG. 1, except that a bypass air passage 10 is provided obliquely above the blower 3. The ventilation resistance of the normal air passage 2 is increased by configuring the air passage opening area so that the air flow amount passing through the bypass air passage 10 is the same or less than the air flow amount passing through the air passage 2. It is possible to suppress an increase in the warm air temperature associated with. Moreover, since the air flow rate of the bypass air passage 10 is set to be equal to or less than the air flow rate of the normal air passage, the air flow amount passing through the trap filter 5 is not extremely reduced.
[0019]
【The invention's effect】
As is apparent from the above description, the present invention provides a system for capturing biological particles in a trap filter, and a system for killing the captured biological particles with high-temperature air generated by changing the calorific value and / or the air flow rate. As a result, the biological particles can be sterilized without impairing the indoor thermal environment, the sterilization power is hardly reduced, and maintenance for maintaining the sterilization power is not required.
[0020]
In addition, since the air passage surrounding the heat source device promotes diffusion mixing of the indoor air passing through the periphery of the heat source device and the high-temperature gas generated from the heat source device, the bioparticles can be sterilized here as well.
[0021]
When the trapping filter is made of a heat-resistant material having a vent, warm air at the above temperature can be passed, and further, biological particles can be captured on the inner wall of the vent, so that sterilization can be effectively performed.
[0022]
In addition, control to increase the amount of heat generated or blown at the start of operation, or both the amount of heat generated and the amount of air blown from the maximum rated values has been incorporated. Since the hot air temperature can be increased, the killing speed of the biological particles can be increased.
[0023]
Further, since the amount of warm air passing through the trap filter is increased by increasing the amount of air blown, the amount of biological particles captured per hour can be increased.
[0024]
If the heat generation amount and the air blowing amount are increased at the same time, the indoor object particles can be killed in a shorter time.
[0025]
In addition, when the operation is less than the rated maximum heat generation amount, control is taken to periodically increase the air flow rate above the rated value, or control to increase the heat generation amount or air flow rate, or both the heat generation amount and air flow rate for a certain period of time. It was. As a result, the biological particles can be killed at a high speed even under a low calorific value that cannot be dealt with suddenly in the room.
[0026]
Furthermore, when stopping the operation, first, the blower was stopped, the heat source unit was stopped after a certain time, and control for operating the blower again for a certain time was introduced. As a result, the hot air is released into the room from the suction port, not from the blowout port, by a draft action. At this time, the biological particles trapped on the filter can be killed.
[0027]
Moreover, the thing which took in the control which sets a louver downward for a fixed time regularly at the time of a driving | operation start or can kill the biological particle of a floor surface efficiently. In addition, a part can be suspended in the air, captured by the trap filter, and killed.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a hot air heater according to a first embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a hot air heater according to a second embodiment of the present invention. Longitudinal section of a wind heater [Figure 4] Longitudinal section of a conventional air cleaner [Explanation of symbols]
1 Heat source machine 2 Air passage 3 Blower 4 Filter 5 Filter 9 for trap Outlet louver 10 Bypass air passage

Claims (6)

A heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a trap filter made of a heat-resistant material provided on the downstream side of the heat source device And a filter provided at the suction port, and at the start of operation, a warm air heater having a control unit that sets the heat generation amount or the air flow rate, or both the heat generation amount and the air flow rate to a rated value or higher. A heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a trap filter made of a heat-resistant material provided on the downstream side of the heat source device And a filter provided at the suction port, and a hot air heater having a control unit that periodically sets the air flow rate to the rated value or higher during operation less than the rated maximum heat generation amount. A heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a trap filter made of a heat-resistant material provided on the downstream side of the heat source device And a filter provided at the suction port, and at the time of operation less than the rated maximum heat generation amount, a hot air heater having a control unit that increases the heat generation amount or the airflow amount, or both the heat generation amount and the airflow amount for a certain period of time Machine. A heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a trap filter made of a heat-resistant material provided on the downstream side of the heat source device And a filter provided at the suction port and a louver capable of changing the blowing direction of the hot air provided at the outlet, and having a control unit that sets the louver downward for a certain period of time at the start of operation or periodically Hot air heater. A heat source device capable of varying the amount of heat generation, an air passage having a plurality of openings surrounding the heat source device, a blower capable of varying the amount of air flow, and a trap filter made of a heat-resistant material provided on the downstream side of the heat source device When the operation is stopped, the blower is stopped first, the heat source device is stopped after a certain time, and the hot air heater having a control unit that operates the blower for a certain time again. . The hot air heating according to any one of claims 1 to 5, wherein a bypass air passage is provided at an appropriate position of the air passage, and the air passage opening area is configured to be equal to or less than an air flow amount passing through the bypass air passage. Machine.

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