JP2006242394A - Heat source unit of air conditioner and air conditioner having this unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for increasing an exchange calorific value of a slantingly arranged air heat exchanger. <P>SOLUTION: This heat source unit 1 of the air conditioner has the air heat exchanger 5 for condensing and liquefying a refrigerant compressed by a compressor by cooling the refrigerant by the air, water sprinkling headers 18 and 19 for sprinkling cooling water from above on the air heat exchanger 5, and an outdoor fan 15 arranged above the air heat exchanger 5 and inducing the air to the air heat exchanger 5 by sending out the air upward; and is formed by slantingly arranging the air heat exchanger 5b; and is characterized by arranging a sprinkling water cooler 26 for cooling the air and cooling the cooling water flowing under the inclined air heat exchanger 5b. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an air conditioner provided with watering means for spraying water on an air heat exchanger.

DESCRIPTION OF RELATED ART Conventionally, what was provided with the watering apparatus which spreads water with respect to the air heat exchanger provided in the heat source unit of the air conditioning apparatus is known (for example, refer patent document 1).
This watering device improves the performance of the refrigerator by reducing the condensation pressure of the refrigerant by spraying water on an air heat exchanger used as a condenser during cooling operation.

  On the other hand, there is known a configuration in which the air heat exchanger is installed in an inclined manner without being installed in the vertical direction (the so-called V-type arrangement or W-type arrangement is used depending on the combination of these air heat exchangers). .) This uses a lower space formed by inclining the air heat exchanger as an air introduction space. Thereby, it becomes possible to arrange an air heat exchanger adjacently, and the space utilization efficiency in the case of installing two or more air heat exchangers can be raised.

JP 2000-205665 A (page 4, FIG. 1)

  However, when trying to spray water on an air heat exchanger that is inclined, the water sprayed from above does not flow in the direction in which the air heat exchanger extends, but immediately flows downward in the vertical direction. It passes through the air heat exchanger. As a result, the entire air heat exchanger cannot be wetted with water, and the amount of exchange heat cannot be increased.

  The present invention has been made in view of the above circumstances, and is a heat source unit of an air conditioner that achieves an increase in the amount of exchange heat of an air heat exchanger disposed at an inclination, and an air conditioner including the same. The purpose is to provide.

In order to solve the above-mentioned problems, the heat source unit of an air conditioner of the present invention and the air conditioner equipped with the same employ the following means.
That is, the heat source unit of the air conditioner according to the present invention cools the refrigerant compressed by the compressor with air and condenses and liquefies the air heat exchanger from above. Sprinkling means and an outdoor fan disposed above the air heat exchanger and attracting air to the air heat exchanger by sending air upward, the air heat exchanger being inclined. In the heat source unit of the air conditioner arranged as described above, air cooling means for cooling the air flowing below the air heat exchanger is provided.

  Since the air heat exchanger is provided with an inclination, when water is sprinkled from above, the water does not flow in the extending direction through the air heat exchanger but flows down through the air heat exchanger vertically downward. Therefore, it does not reach the lower end in the extending direction of the air heat exchanger. The portion where the spray water is not reach is heat exchange in a so-called dry state, and the amount of exchange heat is reduced. When the outside air temperature is higher than the refrigerant temperature, heat is given from the air. In view of this, the air cooling means causes the cooled air to flow below the air heat exchanger so that the performance of the air heat exchanger is not deteriorated as a whole.

  Furthermore, according to the heat source unit of the air conditioner of the present invention, the air cooling means is disposed in a space formed below the air heat exchanger and has a sheet body that extends in a substantially vertical direction. Provided, the water flowing down below the air heat exchanger is brought into contact with air to cool the water while flowing on the surface of the sheet body.

  The air is cooled when passing through the air cooling means by the water flowing on the surface of the sheet body. Furthermore, since the air cooling means includes a sheet body, the water flowing through the surface of the sheet body is cooled by being brought into contact with air. That is, the water flowing on the surface of the sheet body is cooled by maximally utilizing the enthalpy drop between the enthalpy of the attracted air and the dew point temperature enthalpy, and as a result, the spray water can be effectively cooled. it can.

  Further, according to the heat source unit of the air conditioner of the present invention, the air cooling means is a water curtain formed by dropping the water in a substantially planar shape downward from the lower surface of the air heat exchanger. It is characterized by that.

  Since a water curtain formed by dropping water into a substantially planar shape is provided downward from the lower surface of the air heat exchanger, the air flowing into the lower portion of the air heat exchanger passes through the water curtain. Cooled down.

  In addition, the heat source unit of the air conditioner of the present invention includes an air heat exchanger that cools the refrigerant compressed by the compressor with air and condensates it, and watering that sprays water on the air heat exchanger from above. Means and an outdoor fan disposed above the air heat exchanger and attracting air to the air heat exchanger by sending air upward, the air heat exchanger being inclined In the heat source unit of the arranged air conditioner, the watering means sprays water from a plurality of watering positions different in the height direction to the air heat exchanger, and the watering amount at each watering position is: It is characterized by being increased toward the top in terms of the front unit area of the air heat exchanger.

Since the air heat exchanger is disposed at an inclination, if water is sprayed from above, the water does not flow downward through the air heat exchanger, but flows down through the air heat exchanger. According to the watering means of the present invention, since water is sprayed from a plurality of positions that differ in the height direction, the wet area of the heat exchanger can be increased.
Moreover, since the outdoor fan is arrange | positioned above the air heat exchanger, the flow volume of the air attracted | sucked to an air heat exchanger becomes so large that it is close to an outdoor fan. Accordingly, a large amount of water is sprinkled from the water sprinkling position located above where effective heat exchange can be expected. Thereby, even if it is the air heat exchanger arrange | positioned in inclination, many exchange heat quantities can be obtained.

  In addition, the heat source unit of the air conditioner of the present invention includes an air heat exchanger that cools the refrigerant compressed by the compressor with air and condensates it, and watering that sprays water on the air heat exchanger from above. A heat source unit of an air conditioner in which the air heat exchanger is disposed at an inclination, wherein the air heat exchanger is disposed on a surface on which water sprayed by the water sprinkling means flows. Is provided with a guide portion that guides the air heat exchanger to flow in the extending direction of the air heat exchanger.

Since the air heat exchanger is arranged at an inclination, when water is sprinkled from above, the water does not flow in the extending direction through the air heat exchanger but flows down through the air heat exchanger vertically downward. End up. In the present invention, since the guide portion for guiding the sprayed water to flow in the extending direction of the air heat exchanger is provided on the surface through which the sprayed water flows, the sprayed water does not flow down vertically as it is.
In the case of a fin-and-tube heat exchanger, a concave portion or a convex portion formed on the surface of the fin is preferable as the guide portion. In order to prevent the corrosion of the fin, it is preferable to form the recess or the projection so as not to provide a notch by pressing.
The guide portion preferably extends in a direction intersecting the vertical direction so that water flows in the extending direction of the air heat exchanger.
More preferably, it is preferable to be inclined so that the flow of water guided by the guide portion flows to the upper surface side of the air heat exchanger. Thereby, it can prevent that the water which passed the guide part flows to the lower surface side of an air heat exchanger, and flows down vertically downward.

  In addition, the heat source unit of the air conditioner of the present invention includes an air heat exchanger that cools the refrigerant compressed by the compressor with air and condensates it, and watering that sprays water on the air heat exchanger from above. Means and an outdoor fan disposed above the air heat exchanger and attracting air to the air heat exchanger by sending air upward, the air heat exchanger being substantially vertical In a heat source unit of an air conditioner having a vertical air heat exchanger standing in a direction and an inclined air heat exchanger arranged at an inclination, the amount of water sprayed on the vertical air heat exchanger is inclined. The amount of water sprayed to the air heat exchanger is larger and / or the amount of refrigerant flowing to the vertical air heat exchanger is larger than the amount of refrigerant flowing to the inclined air heat exchanger. .

  Since the vertical air heat exchanger is erected in a substantially vertical direction, the water sprayed from above by the sprinkling means flows down as it is, and heat can be exchanged with a sufficiently wet area. On the other hand, in the inclined air heat exchanger arranged at an inclination, most of the water sprayed from above by the watering means passes through the inclined air heat exchanger and flows downward in the vertical direction. The heat exchanger flows down without getting wet enough. Therefore, the inclined air heat exchanger cannot be expected to have a heat transfer amount as high as that of the vertical air heat exchanger. Therefore, in the present invention, the amount of water to be sprayed and / or the amount of refrigerant is made to flow more in the vertical air heat exchanger than in the inclined air heat exchanger.

  Furthermore, in the heat source unit of the air conditioning apparatus of the present invention, the lower end of the vertical air heat exchanger and the lower end of the inclined air heat exchanger are disposed adjacent to each other, and the lower portion of the inclined air heat exchanger is It is characterized by being in a dry state not wetted with water.

  Since the vertical air heat exchanger is erected in the vertical direction, the water sprayed from above by the sprinkling means flows downward, and the lower part is wet. When air is attracted from the outside by the outdoor fan in this state, the water sprayed together with the air is sprinkled up and taken away to the outside (so-called carryover). Since an additive such as a rust inhibitor is added to the spray water, even the additive is taken outside. This necessitates additional injection of additives as needed, which puts pressure on running costs. In the present invention, the air flow attracted to the lower part of the inclined air heat exchanger is positively made dry by lowering the lower part of the inclined air heat exchanger arranged adjacent to the lower end of the vertical air heat exchanger. The road resistance was reduced and a large amount of air was taken from the lower part of the inclined air heat exchanger. Thereby, the air taken in from the lower part of the vertical air heat exchanger is also relatively reduced, and water in the lower part of the vertical air heat exchanger is prevented from being splashed and taken out to the outside.

  Moreover, the air investigation apparatus of this invention is a heat source unit of the air conditioning apparatus in any one of said above provided with the compressor which compresses a refrigerant | coolant, and the air heat exchanger which condenses the refrigerant | coolant compressed by this compressor, And an expansion means for expanding the refrigerant condensed in the air heat exchanger, and an evaporator for evaporating the refrigerant expanded in the expansion means.

  Since air cooling means is provided to cool the air flowing into the lower part of the air heat exchanger, a predetermined amount of exchange heat can be obtained even when water does not spread below the inclined air heat exchanger. Can be secured.

  Since water is sprayed from a plurality of different positions in the height direction with respect to the air heat exchanger arranged in an inclined manner, the wet area of the heat exchanger can be increased. Furthermore, since a large amount of water is sprinkled from the upper watering position where effective heat exchange can be expected to the air heat exchanger, many air heat exchangers arranged at an inclination Exchange heat quantity can be obtained.

Embodiments according to the present invention will be described below with reference to the drawings.
[First Embodiment]
A first embodiment of the present invention will be described with reference to FIGS.
1 and 2 are schematic configuration diagrams of a heat source unit of an air conditioner. FIG. 1 mainly shows a refrigerant flow during cooling, and FIG. 2 mainly shows a cooling water flow.
The heat source unit 1 is disposed outside and compresses a gas refrigerant, for example, a compressor 3 such as a turbo compressor, and an air heat exchanger 5 that heat-condenses the gas refrigerant compressed by the compressor 3 with outside air to condense it. From the high-pressure expansion valve 7 a that expands the liquid refrigerant condensed in the air heat exchanger 5, the intermediate cooler 6 that temporarily stores the liquid refrigerant led from the high-pressure expansion valve 7 a and performs intermediate cooling, and the intermediate cooler 6 A low-pressure expansion valve 7b that expands the liquid refrigerant to be guided and an evaporator 9 that evaporates the liquid refrigerant expanded in the low-pressure expansion valve 7b. The high stage expansion valve 7a may be separately disposed downstream of each of the eight air heat exchangers 5a and 5b illustrated.

The compressor 3 is rotationally driven by an inverter-controlled electric motor 11.
The evaporator 9 is provided with a cold / hot water nozzle 13. The cold / hot water nozzle 13 includes a heat transfer tube 13 a through which water flows, and the heat transfer tube 13 a is inserted into the evaporator 9. Thereby, the cold water is obtained by cooling the water flowing in the heat transfer tube 13a by the cold heat obtained in the evaporator 9.

The air heat exchanger 5 is disposed in the upper space of the heat source unit 1. The air heat exchanger 5 has a configuration in which a plurality of plate-like fins erected in a direction along the air flow direction are stacked, and a plurality of tubes through which the refrigerant flows are penetrated in the stacking direction of the fins. It is a so-called fin-and-tube heat exchanger. The air heat exchanger 5 cools and condenses the high-temperature high-pressure gas refrigerant with the outside air during the cooling operation.
An aluminum alloy is used for the base material of the fin. As the aluminum alloy, it is preferable to use an aluminum alloy having a high aluminum content in order to improve the thermal conductivity. In order to ensure wettability, the surface of the fin is coated with a water glass-based hydrophilic resin and subjected to a hydrophilic treatment.

The air heat exchanger 5 includes a vertical outdoor heat exchanger 5a erected in the vertical direction and an inclined air heat exchanger 5b provided to be inclined with respect to the vertical direction. One vertical air heat exchanger 5a and one inclined air heat exchanger 5b are paired, and the lower ends of the air heat exchangers 5a and 5b are arranged adjacent to each other. In this embodiment, four pairs of air heat exchangers 5 are provided, and a total of eight surfaces is used.
The refrigerant supplied from the compressor 3 is distributed to each of the vertical air heat exchanger 5a and the inclined air heat exchanger 5b by a valve (not shown). The distribution ratio of the refrigerant amount is set to be larger in the vertical air heat exchanger 5a than in the inclined air heat exchanger 5b.

An outdoor fan 15 is provided above the pair of air heat exchangers 5a and 5b. That is, one outdoor fan 15 is provided for each pair of air heat exchangers 5a and 5b.
The outdoor fan 15 attracts air from the outside to the air heat exchangers 5a and 5b disposed below by sending air upward. The outdoor fan 15 is rotated by an electric motor 16. The electric motor 16 is driven and stopped by a control unit (not shown). The electric motor 16 may be inverter controlled so that the rotation speed can be variably controlled. Or you may make it employ | adopt a DC motor and perform rotation speed control.

As shown in FIG. 2, a watering header (watering means) 18 is provided above the vertical air heat exchanger 5a. A plurality of watering headers (watering means) 19 are also provided on the top of the inclined air heat exchanger 5b. A large number of holes are formed below each of the watering headers 18 and 19, and cooling water flows downward from each hole. The holes are arranged so that the cooling water is evenly distributed to the fins of the air heat exchanger 5.
The watering headers 18 and 19 provided for the eight air heat exchangers 5 are connected by a water supply pipe 24. Further, the water supply pipe 24 is connected to the watering headers 18 and 19 and the water tank 20 provided in the lower space of the heat source unit 1. Water in the water storage tank 20 is supplied to the watering headers 18 and 19 by a water supply pump 22 provided in the water supply pipe 24.
In the present embodiment, there are two watering headers 19 provided in the inclined air heat exchanger 5b, and the upper header is set so that the amount of watering is larger than the lower header.

A sprinkler cooler (air cooling means) 26 is provided in a lower space formed by tilting the inclined air heat exchanger 5b. A filter 28 for removing impurities such as dust contained in the water falling from the inclined air heat exchanger 5b is provided on the upper part of the water spray cooler 26.
Below the sprinkler cooler 26 and the inclined air heat exchanger 5b, a recovery tray 30 is provided for recovering the cooling water sprayed on the sprinkler cooler 26 and the inclined air heat exchanger 5b. A filter 32 for removing impurities such as dust is also provided above the collection tray 30.

Below the vertical air heat exchanger 5a, a collection tray 34 for collecting the cooling water sprayed on the vertical air heat exchanger 5a is provided. A filter 36 for removing impurities such as dust is also provided above the collection tray 34.
The water collected by the collection trays 30 and 34 is returned to the water storage tank 20 via the return pipe 38. Thus, the water returned to the water storage tank 20 is pumped up by the water supply pump 22 as described above, and is sprayed to the air heat exchanger 5 again.

As shown in FIG. 3, the water cooler 26 includes a filler 40 inside. The filler 40 has a structure in which a plurality of resin concavo-convex sheets (sheet bodies) having concavo-convex surfaces are erected in the vertical direction, and a minute gap for flowing air is formed between the concavo-convex sheets. ing. The filler 40 increases the mass transfer coefficient from cooling water to air by bringing the surface of the concavo-convex sheet into contact with a lot of air while the cooling water flows down, and sufficiently uses the enthalpy drop to cool the cooling water. It evaporates and self-cools the cooling water, and at the same time cools the passing air. FIG. 3 shows an air flow F. The upper air flow directly flows into the inclined air heat exchanger 5b, and the lower air flow passes through the sprinkler cooler 26 before the inclined air. It flows into the heat exchanger 5b.
As shown in FIG. 4, a watering header 41 is provided above the filler 40. A large number of holes are formed in the lower surface of the watering header 41, so that the cooling water is evenly supplied to all the uneven sheets of the filler 40. 4 is a view of the inclined air heat exchanger 5b as viewed from the lower surface side (that is, the upstream side of the air flow; the right side of FIG. 3).

  FIG. 5 is a view of the inclined air heat exchanger as viewed from the upper surface side (that is, the downstream side of the air flow; the left side of FIG. 3). Thus, the watering header 19 has a pipe shape extending in the width direction of the inclined air heat exchanger, and in this embodiment, two are provided above the inclined air heat exchanger 5b.

FIG. 6 shows a partially enlarged view of the fins 42 of the inclined air heat exchanger 5b. A plurality of dimples (concave portions) 46 are formed on the surface of the fin 42 by pressing. The dimple 46 has a horizontally long shape that is orthogonal to the cooling water W that flows in the vertical direction. The dimple 46 is inclined with respect to the horizontal line L so that the end on the upper surface side of the inclined air heat exchanger 5b is located below the other end. As a result, as shown in the figure, after the cooling water flowing down is blocked by the dimple 46, the cooling water flows to the upper surface side (left side in the figure) of the inclined air heat exchanger 5b, and the inclined air heat exchanger It flows to the lower surface side of 5b and prevents the cooling water from falling vertically downward.
In the figure, only one tube 44 is provided in the width direction of the fin 42, but the present invention is not limited to this, and two or more tubes 44 are provided in the width direction of the fin 42. A tube may be provided.

Next, the operation of the air conditioning apparatus having the above configuration will be described.
In this embodiment, since there is a feature in watering with respect to the air heat exchanger 5, the cooling operation will be described, and description of the heating operation in which water is not sprayed on the air heat exchanger 5 will be omitted.
The refrigerant is compressed by the compressor 3 and sent to the air heat exchanger 5 provided in the upper space of the heat source unit 1. The refrigerant sent to the air heat exchanger 5 is distributed to each of the vertical air heat exchanger 5a and the inclined air heat exchanger 5b. The distribution ratio of the refrigerant amount is set so that the vertical air heat exchanger 5a is larger than the inclined air heat exchanger 5b.
In the air heat exchanger 5, the refrigerant is cooled and condensed by applying heat to the air introduced by the outdoor fan 15.

Cooling water is allowed to flow down from the water spray headers 18 and 19 to the air heat exchangers 5a and 5b (see FIG. 2). The cooling water flowed down takes heat from the refrigerant flowing in the tube as it flows in the form of a film on the fin surface of the air heat exchanger 5. Thereby, the amount of condensation in the air heat exchanger 5 is increased.
The amount of heat that the cooling water flowing on the fin surface of the air heat exchanger takes away from the refrigerant depends mainly on the heat transfer based on the temperature difference between the refrigerant and the cooling water, but mainly the latent heat of vaporization of the cooling water contributes greatly. However, it is effective to cool the cooling water because the amount of heat transfer from the refrigerant to the cooling water increases as the temperature of the sprayed cooling water decreases.

In order to cool the cooling water, a water spray cooler 26 is provided below the inclined air heat exchanger 5b. The cooling water cooling system will be described below.
The cooling water supplied from the water spray header 19 to the inclined air heat exchanger 5b flows downward while wetting the upper part of the inclined air heat exchanger 5b, and then flows down onto the water spray cooler 26. The cooling water that has flowed down flows into the filler 40 in the sprinkler cooler 26 after impurities such as dust are removed by the filter 28. The cooling water flowing into the filler 40 is cooled by mass transfer based on the enthalpy difference with the air passing between the concavo-convex sheets as it flows on the surface of the concavo-convex sheet constituting the filler 40. Thereby, in the summer when the outside air temperature (dry bulb temperature 35 ° C., wet bulb temperature 24 ° C.) is set, the cooling water that has passed through the sprinkler cooler 26 is cooled to 30 ° C. or less. At the same time, the air passing through the sprinkler cooler 26 is also cooled.
Thus, the cooling water cooled by the water spray cooler 26 is temporarily stored in the collection tray 30. The cooling water stored in the recovery tray 30 is guided to the water storage tank 20, where it merges with the cooling water from the recovery tray 34 that recovers the cooling water that has passed through the vertical air heat exchanger 5a. The cooling water in the water storage tank 20 is pumped up by the water supply pump 22 and flows again from the sprinkling headers 18 and 19 to the air heat exchangers 5.
By repeating the circulation as described above, the cooling water sprayed on the air heat exchanger 5 is cooled.

The refrigerant that has been cooled by water in the air heat exchanger 5 and has reached a low condensation temperature is throttled by the high-pressure expansion valve 7 a and then sent to the intermediate cooler 6. The gas refrigerant that has been squeezed and evaporated is sent from the intermediate cooler 6 to the intermediate stage of the compressor 3. On the other hand, the liquid refrigerant stored in the intercooler 6 without evaporating is expanded by the low-pressure expansion valve 7 b and sent to the evaporator 9. The refrigerant sent to the evaporator 9 evaporates in the evaporator 9. Cold energy is obtained by the amount of heat removed when the refrigerant evaporates. This cold heat is given to the water flowing in the heat transfer tube 13a of the cold / hot water nozzle 13, and this water is cooled. The cold water obtained from the cold / hot water nozzle 13 has a temperature of about 7 ° C.
The refrigerant evaporated in the evaporator 9 returns to the compressor 3 and is compressed again.

According to the air conditioning apparatus of the present embodiment described above, the following operational effects are achieved.
The sprinkler cooler 26 is provided below the inclined air heat exchanger 5b, and the air passes through the sprinkler cooler 26 before the air flows into the inclined air heat exchanger 5b. The air is cooled mainly by the latent heat of evaporation of the cooling water by passing through the sprinkler cooler 26. That is, the water spray cooler 26 is used not only for cooling the water spray but also as an air cooling means for cooling the air flowing into the air heat exchanger 5.
Since the air cooled by the water spray cooler 26 is caused to flow to the lower part of the inclined heat exchanger 5b (see FIG. 3), the portion in which the cooling water is in a dry state without being distributed by being inclined. Even if it occurs in the lower part of the inclined air heat exchanger 5b, a certain amount of exchange heat can be secured.
Since the relative humidity of the air increases by passing through the sprinkler cooler 26, the enthalpy drop in the air heat exchanger is reduced as compared with air that does not pass through the sprinkler cooler 26. However, even when the outside air temperature is high and the temperature of the refrigerant flowing in the air heat exchanger is higher than the outside air temperature, such as in summer, the temperature of the air flowing in from the outside air temperature by passing the water cooler 26 is allowed to pass. Can be lowered. Therefore, it is possible to avoid a situation in which the performance of the heat exchanger is deteriorated when air having a temperature higher than the refrigerant temperature flowing in the air heat exchanger flows into the lower portion of the inclined air heat exchanger 5b.
Thus, by disposing the sprinkler cooler in the space below the inclined air heat exchanger 5b, the inconvenience peculiar to the inclined air heat exchanger that the cooling water does not flow to the lower part can be eliminated, and the inclined air heat as a whole The performance of the exchanger 5b can be ensured.

  Further, the water spray cooler 26 cools the cooling water by making the maximum use of the difference between the enthalpy and the dew point temperature enthalpy in the induced air state by flowing the cooling water on the uneven sheet surface of the filler 40. Cooling water can be cooled effectively.

  In addition, since the plurality of water spray headers 19 are provided at different heights with respect to the inclined air heat exchanger 5b, the wet area of the inclined air heat exchanger 5b can be increased.

  Further, since the outdoor fan 15 is disposed above the air heat exchanger 5, the flow rate of air attracted to the air heat exchanger 5 increases as it approaches the outdoor fan 15. Considering this, a large amount of cooling water is sprinkled from the sprinkling header 19 located above where effective heat exchange can be expected. Thereby, even if it is the inclination air heat exchanger 5b arrange | positioned inclining, it can be made to heat-exchange effectively.

In addition, as shown in FIG. 6, dimples 46 are provided on the surface of the fin 42 through which the cooling water flows as a guide portion that guides the flow in the extending direction of the inclined air heat exchanger 5 b. Thereby, it is possible to prevent the sprayed cooling water from flowing down vertically.
Furthermore, since the dimple 46 extends in a direction intersecting the vertical direction, the dimple 46 can be guided to flow in the extending direction of the inclined air heat exchanger 5b.
Further, since the cooling water guided by the dimple 46 is inclined so as to flow toward the upper surface side of the inclined air heat exchanger 5b, the cooling water passing through the dimple 46 is on the lower surface side of the inclined air heat exchanger 5b. Can be prevented from flowing down and vertically downward.

The amount of cooling water sprayed on the vertical air heat exchanger 5a is made larger than the amount of cooling water sprayed on the tilted air heat exchanger 5b, and the amount of refrigerant flowing to the vertical air heat exchanger 5a is tilted air heat exchange. The amount of refrigerant flowing to the vessel 5b was increased.
Since the vertical air heat exchanger 5a is erected in a substantially vertical direction, the cooling water sprayed from above flows down as it is and can exchange heat with a sufficiently wet area. In contrast, in the inclined air heat exchanger 5b arranged at an inclination, most of the cooling water sprayed from above by the watering header 19 passes through the inclined air heat exchanger and flows downward vertically. Then, it flows down without being sufficiently wetted to the lower part of the inclined air heat exchanger 5b. Therefore, the inclined air heat exchanger 5b cannot expect the heat transfer amount as much as the vertical air heat exchanger 5a. Accordingly, the amount of cooling water to be sprayed and the amount of refrigerant are made to flow more in the vertical air heat exchanger 5a than in the inclined air heat exchanger 5b, and an appropriate watering amount and refrigerant amount corresponding to the respective capacities are obtained. did.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.
This embodiment is different from the first embodiment in that the number of watering headers 19 is further increased without providing a watering cooler. Since other configurations are the same, description thereof will be omitted, and the configuration around the inclined air heat exchanger 5b will be described.
The sprinkling header 19 provided in the inclined air heat exchanger 5b is provided not only above but also below (three in this embodiment). Thereby, not only the upper part of the inclined air heat exchanger 5b but also the whole including the lower part can be wetted with the cooling water, and the amount of exchange heat can be increased.
The amount of cooling water flowing from each sprinkling header 19 is adjusted so as to increase as it goes upward and decrease as it goes downward. Thereby, the upper part of the inclined air heat exchanger 5b in which the exchange heat quantity can be expected in relation to the inflow air quantity by the outdoor fan 15 (see FIG. 2) disposed above can be wetted.
According to the present embodiment, the inclined air heat exchanger 5b is provided with a plurality of watering headers 19 with different heights so as to wet not only the upper part but also the lower part. Can be wet with cooling water down to the bottom. Therefore, more heat exchange becomes possible compared with the case where heat is exchanged in a dry state without cooling water reaching the lower part of the inclined air heat exchanger 5b.

[Third Embodiment]
Next, a third embodiment of the present invention will be described with reference to FIG.
The present embodiment is different from the first embodiment in the configuration around the inclined air heat exchanger in which the water cooler is not provided. Since the other configuration is basically the same, the description thereof is omitted.
As shown in FIG. 8, components such as a sprinkler cooler are not disposed in the lower space of the inclined air heat exchanger 5 b, and cooling water is allowed to droop down in this lower space to form a water curtain.
Specifically, the drainer 50 is attached to the lower surface of the inclined air heat exchanger 5b. The drainer 50 is provided so as to extend in the width direction of the inclined air heat exchanger 5b and is, for example, a rod-like body having a triangular cross section. As a material for the drainer 50, a resin is more preferable than a metal in consideration of corrosion resistance.

According to the drainer 50 according to the present embodiment, the following operational effects are obtained.
The cooling water W sprayed from the upper water spray header 19 to the inclined air heat exchanger 5b passes through the fin surface of the inclined air heat exchanger 5b, passes through the inclined air heat exchanger 5b, and passes through the inclined air heat exchanger 5b. Flows to the bottom (back). Thereafter, the cooling water W travels along the lower surface of the inclined air heat exchanger 5 b and is forcibly dropped vertically downward by the drainer 50. Thereby, the cooling water W is forced to flow downward from the drainer 50, and a curtain-like water curtain 51 is formed across the width direction of the drainer 50.
The air that is about to flow into the lower portion of the inclined air heat exchanger 5 b passes through the water curtain 51. Air passes through the water curtain 51 and is cooled by the sensible heat and latent heat of evaporation of the cooling water W. Therefore, the cooled air is introduced into the lower part of the inclined air heat exchanger 5b.
In the present embodiment, a portion where the cooling water does not spread and is in a dry state is generated in the lower portion of the inclined air heat exchanger 5b, but a certain amount of exchange heat can be secured also in this lower portion.
Further, even when the outside air temperature is high and the temperature of the refrigerant flowing through the air heat exchanger is higher than the outside air temperature, such as in summer, the temperature of the air flowing in from the outside air temperature can be reduced by passing the water curtain 51. Can be lowered. Therefore, it is possible to avoid a situation in which the performance of the heat exchanger is deteriorated when air having a temperature higher than the refrigerant temperature flowing in the air heat exchanger flows into the lower portion of the inclined air heat exchanger 5b.

In the present embodiment, only one sprinkling header 19 is provided at the upper part, and the drainer 50 is provided so that the lower part of the inclined air heat exchanger 5b is brought into a dry state without being wetted with cooling water. This is to prevent the cooling water from being blown out from the lower part of the vertical air heat exchanger 5a and taken away (carry over).
That is, since the vertical air heat exchanger 5a is erected in the vertical direction, the cooling water W sprayed from above by the water spray header 18 flows downward, and the lower part is also wet with the cooling water W. When air is attracted from the outside by the outdoor fan 15 (see FIG. 2) in this state, the cooling water sprayed together with the air is sprinkled up and taken away to the outside. Since an additive such as a rust inhibitor is added to the spray water, even the additive is taken outside. This necessitates additional injection of additives as needed, which puts pressure on running costs.
In this embodiment, the lower part of the inclined air heat exchanger 5b is positively made dry (dried) by lowering the lower part of the inclined air heat exchanger 5b disposed adjacent to the lower end of the vertical air heat exchanger 5a. The flow resistance of the air attracted by the air is reduced, and a large amount of air is taken in from the lower part of the inclined air heat exchanger 5b. Thereby, the air taken in from the lower part of the vertical air heat exchanger 5a is relatively reduced, and the cooling water at the lower part of the vertical air heat exchanger 5a is prevented from being sprayed and taken out to the outside.

  Further, the collection tray 30 of the present embodiment is subjected to the following modifications compared to the first embodiment. That is, the collection tray 30 includes an inclined surface 30b on the lower surface, and a box-shaped storage portion 30a is provided at the lower end that is the end of the inclined surface 30b. By setting it as such a structure, the cooling water which flowed in the collection | recovery tray 30 is collected to the storage part 30a along the inclined surface 30b, and can collect | recover cooling water efficiently. The collection tray is provided with a filter for removing impurities such as dust as in the first embodiment. Of course, this collection tray 30 may be applied to a collection tray of other embodiments such as the first embodiment.

  Further, as shown in FIG. 9, the drainer 50 may be omitted, and a plurality of louvers 52 may be provided below the inclined air heat exchanger 5b. By providing a plurality of louvers 52 in the vertical direction, the cooling water that has passed through the inclined air heat exchanger 5b is caused to flow downward while being guided. Moreover, it is good also as further increasing contact time with the air which passes by providing the louver 52 in multiple rows (this embodiment 2 rows). Each end face side of each louver 52 arranged in each embodiment is made to have a saw-like shape so that the cooling water is appropriately dispersed in the longitudinal direction.

It is the schematic which showed the refrigerant | coolant flow of the air conditioning apparatus of this invention. It is the schematic which showed the cooling water flow of the air conditioning apparatus of this invention. It is the side view which showed the positional relationship of an inclination air heat exchanger and a water spray cooler. It is the front view which looked at the inclination air heat exchanger from the lower surface side (namely, upstream of an air flow). It is the rear view which looked at the inclination air heat exchanger from the upper surface side (namely, downstream of an air flow). It is the elements on larger scale which showed the fin used for an inclination air heat exchanger. It is the side view which showed 2nd Embodiment of this invention and showed the structure which received multiple watering headers up and down the inclination air heat exchanger. It is a perspective view which shows 3rd Embodiment of this invention and shows the state which provided the draining on the lower surface of the inclination air heat exchanger. It is the side view which showed the modification which replaced with the draining of FIG. 8 and provided the louver.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat source unit 3 Compressor 5 Air heat exchanger 5a Vertical air heat exchanger 5b Inclined air heat exchanger 15 Outdoor fan 18, 19 Watering header 20 Water tank 22 Water supply pump 26 Watering cooler (air cooling means)

Claims (8)

An air heat exchanger that cools the refrigerant compressed by the compressor with air to condense and liquefy it, a watering means for spraying water from above to the air heat exchanger, and an air heat exchanger disposed above the air heat exchanger. And an outdoor fan that attracts air to the air heat exchanger by sending air upward, and the heat source unit of the air conditioner in which the air heat exchanger is inclined,
A heat source unit for an air conditioner, characterized in that air cooling means for cooling air flowing below the air heat exchanger is provided. The air cooling means is disposed in a space formed below the air heat exchanger, and includes a sheet body extending in a substantially vertical direction, and the water flowing down below the air heat exchanger is The heat source unit of an air conditioner according to claim 1, wherein the water is cooled by contacting with air while flowing on the surface of the sheet body. 2. A heat source for an air conditioner according to claim 1, wherein the air cooling means is a water curtain formed by dropping the water in a substantially planar shape downward from the lower surface of the air heat exchanger. unit. An air heat exchanger that cools the refrigerant compressed by the compressor with air to condense and liquefy it, a watering means for spraying water from above to the air heat exchanger, and an air heat exchanger disposed above the air heat exchanger. And an outdoor fan that attracts air to the air heat exchanger by sending air upward, and the heat source unit of the air conditioner in which the air heat exchanger is inclined,
The watering means sprays water from a plurality of watering positions that differ in the height direction to the air heat exchanger, and the amount of watering at each watering position is converted to the front unit area of the air heat exchanger. The heat source unit of the air conditioner is characterized in that the number of the heat source unit is increased toward the upper side. An air heat exchanger that cools the refrigerant compressed by the compressor with air to condense and liquefy it, and water spraying means for spraying water from above to the air heat exchanger, wherein the air heat exchanger is inclined In the heat source unit of the air conditioner arranged as
The air heat exchanger includes a guide portion that guides the water to flow in the extending direction of the air heat exchanger on a surface through which the water sprayed by the sprinkling means flows. Heat source unit of air conditioner. An air heat exchanger that cools the refrigerant compressed by the compressor with air to condense and liquefy it, a watering means for spraying water from above to the air heat exchanger, and an air heat exchanger disposed above the air heat exchanger. And an outdoor fan that attracts air to the air heat exchanger by sending air upward, and the air heat exchanger includes a vertical air heat exchanger and an inclined In the heat source unit of the air conditioner, comprising the inclined air heat exchanger arranged as
The amount of water sprayed to the vertical air heat exchanger is larger than the amount of water sprayed to the inclined air heat exchanger and / or the amount of refrigerant flowing to the vertical air heat exchanger is changed to the inclined air heat exchanger A heat source unit for an air conditioner, characterized in that the amount of refrigerant is larger than the amount of refrigerant flowing through the chamber. While the lower end of the vertical air heat exchanger and the lower end of the inclined air heat exchanger are disposed adjacent to each other,
The heat source unit of the air conditioner according to claim 6, wherein a lower portion of the inclined air heat exchanger is in a dry state not wetted with water. A compressor for compressing the refrigerant;
The heat source unit of the air conditioner according to any one of claims 1 to 7, further comprising an air heat exchanger that condenses the refrigerant compressed by the compressor,
Expansion means for expanding the refrigerant condensed in the air heat exchanger;
An evaporator for evaporating the refrigerant expanded in the expansion means;
An air conditioner comprising:

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