JP2010216708A - Water receiving tray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water receiving tray capable of reducing the frequency of the clogging of a hole formed at a water sprinkling header, and preventing the deterioration of water sprinkling efficiency. <P>SOLUTION: The water receiving tray 34 is provided at the lower side of an air heat exchanger for condensing and liquefying a gas refrigerant compressed by a compressor by heat exchange with air which is outside air, and recovers sprinkling water sprinkled to the air heat exchanger. A weir 45 for dividing a space surrounded by a peripheral wall 34a into two spaces which are a first space S1 and a second space S2 is erected upwardly from the bottom face, and water recovered to the second space S2 and water made to flow over the weir 45 and intruded into the second space S2 are circulated as sprinkling water. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention, for example, is provided below an air heat exchanger that heat-exchanges gas refrigerant compressed by a compressor with air that is outside air to condense and liquefy it, and collects sprayed water sprayed on the air heat exchanger This is related to the water receiving tray.

  As a water receiving tray which collect | recovers the sprayed water sprayed on the air heat exchanger, what was disclosed by patent document 1 is known, for example.

JP 2006-189200 A

  However, when the spray water sprayed on the air heat exchanger is circulated and reused, dust in the air is mixed in the spray water, and the dust circulates together with the spray water. Therefore, the hole provided in the watering header is clogged with dust or the like, and there is a possibility that the watering efficiency is lowered and the performance of the heat source machine is lowered.

  The present invention has been made in view of the above circumstances, and provides a water receiving tray that can reduce the frequency of clogging of holes provided in a watering header and prevent a reduction in watering efficiency. The purpose is to do.

The present invention employs the following means in order to solve the above problems.
The water receiving tray according to the present invention is provided below the air heat exchanger that heat-exchanges the gas refrigerant compressed by the compressor with the air that is the outside air to condense and liquefy it, and is spread on the air heat exchanger. A water receiving tray for collecting spray water, wherein a weir that bisects a space surrounded by a peripheral wall into a first space and a second space is erected upward from the bottom surface, and the second space The water collected in the water and the water that has passed over the weir and entered the second space are circulated as spray water.

According to the water receiving tray of the present invention, the space formed in the water receiving tray is partitioned into the first space and the second space by the weir provided in the water receiving tray, and the second space The water collected in the water and the water that has passed over the weir and entered the second space are supplied (supplied) to the watering header through the circulation pipe, for example. On the other hand, the water collected in the first space, the dust accumulated on the bottom in the first space, and the like are periodically discharged to the outside. Thereby, the dust etc. which circulate with sprinkling water can be reduced significantly, and the frequency of clogging of the watering header (more specifically, the hole provided in the watering header) and the frequency of cleaning can be reduced. It is possible to prevent a decrease in watering efficiency.
In addition, since the water collected in the first space is periodically discharged and is replenished with new tap water, the ratio of rainwater in the spray water can be reduced. Deterioration of water quality can be suppressed, and corrosion of the air heat exchanger and the water receiving tray can be suppressed.

  In the water receiving tray, it is more preferable that a bottom surface forming the first space is inclined toward an inlet of a drain pipe communicating with the first space.

  According to such a water receiving tray, the bottom surface existing in the first space is inclined toward the inlet of the drain pipe, that is, the water collected in the first space and settled on the bottom surface. The dust accumulated in this way is formed to flow into the inlet of the drain pipe. Thereby, the water collected in the first space, the dust accumulated on the bottom surface, and the like can be discharged quickly (rapidly). Moreover, since the flow rate of water toward the inlet of the drainage pipe can be increased, dust or the like that has settled and accumulated on the bottom surface can be efficiently guided to the inlet of the drainage pipe and discharged to the outside.

  In the water receiving tray, it is more preferable that an inlet of the drain pipe is provided in the vicinity of the peripheral wall.

  According to such a water receiving tray, the inlet of the drain pipe is located at the peripheral portion of the water receiving tray, that is, at a position where the worker can see (the worker can see) and the worker's hand can reach. Is provided. Thereby, the quantity and state of deposits (dust) consisting of dust etc. can be grasped easily, and deposits (dust) consisting of dust etc. can be easily removed as needed.

  In the water receiving tray, the weir is a tubular member having an inner diameter that is the same as or slightly larger than the inner diameter of the recovery pipe that communicates with the second space, and is formed on the inner peripheral side of the weir. More preferably, the space is connected so as to communicate with the internal space of the recovery pipe.

According to such a water receiving tray, since the weir is composed of a tubular member erected from the inlet of the recovery pipe, the second space is made as small as possible (as small as possible). Can be. Thereby, the dust etc. which circulate with sprinkling water can be reduced further, and the frequency of clogging of the watering header (more specifically, the hole provided in the watering header) and the frequency of cleaning can be further reduced. It is possible to further prevent a decrease in watering efficiency.
In addition, since the water collected in the first space is periodically discharged and replenished with new tap water, the ratio of rainwater in the sprayed water can be further reduced. The deterioration of the water quality can be further suppressed, and corrosion of the air heat exchanger, the water receiving tray and the like can be further suppressed.

  The heat source apparatus according to the present invention includes a water receiving tray that can reduce the frequency of clogging of holes provided in the watering header and can prevent a decrease in watering efficiency.

  According to the heat source apparatus according to the present invention, a decrease in performance due to a decrease in watering efficiency is prevented, and reliability is improved.

  According to the water receiving tray according to the present invention, it is possible to reduce the frequency of clogging of the holes provided in the watering header, and it is possible to prevent a reduction in watering efficiency.

1 is a schematic configuration diagram illustrating a turbo refrigerator according to a first embodiment of the present invention. It is the schematic block diagram which showed the watering apparatus applied to the turbo refrigerator of FIG. It is the figure which expanded and showed the cross section of the water receiving tray which concerns on 1st Embodiment of this invention. It is the figure which expanded and showed the cross section of the water receiving tray which concerns on 2nd Embodiment of this invention. It is the figure which expanded and showed the cross section of the water receiving tray which concerns on 3rd Embodiment of this invention. It is the figure which expanded and showed the cross section of the water receiving tray which concerns on 4th Embodiment of this invention.

Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a schematic configuration diagram of a turbo refrigerator (heat source unit).
The turbo refrigerator 1 includes a turbo compressor (compressor) 3 that compresses a gas refrigerant, and an air heat exchanger 5 that heat-exchanges the gas refrigerant compressed by the turbo compressor 3 with air that is outside air to condense and liquefy it. The economizer 6 for supercooling the liquid refrigerant condensed in the air heat exchanger 5, the refrigerant precooler 8 for further supercooling, the economizer sub-expansion valve 7b for adjusting the economizer subcooling degree, and the refrigerant precooler supercooling A sub-expansion valve 7c for adjusting the degree of refrigerant, a main expansion valve 7a for expanding the refrigerant liquid led from the refrigerant pre-cooler, and an evaporator 9 for evaporating the liquid refrigerant expanded in the main expansion valve 7a. ing.

  The turbo compressor 3 includes a centrifugal impeller, and the gas refrigerant is compressed by the centrifugal impeller. The centrifugal impeller is rotated by an inverter-controlled electric motor 11. The rotation speed of the electric motor 11 is determined by a refrigerator control unit (not shown) that controls the entire turbo refrigerator 1. This refrigerator control unit controls the opening degree of the expansion valves 7a, 7b, 7c, an inlet guide vane (not shown) provided at the gas refrigerant suction port of the turbo compressor 3, and the like.

  The evaporator 9 is a plate heat exchanger in which a plurality of plates are stacked in parallel, and a plurality of refrigerant channels and a plurality of cold / hot water channels are alternately arranged. Cold water is obtained by cooling the water flowing in the laminated plate by the cold heat obtained in the evaporator 9. The cold water obtained from the cold / hot water nozzle 13 is sent to an indoor unit installed in each living room in the building and used for indoor air conditioning in the living room.

The air heat exchanger 5 is arranged outdoors so that heat can be exchanged with the outside air. 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 operates as a condenser that 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 air 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 close to each other and adjacent to each other. In this embodiment, four pairs of air heat exchangers 5 are provided, and a total of eight surfaces is used.

  On the front surface of the vertical air heat exchanger 5a, a cooler 40 with a filler and a watering tray 41 are installed. The spray water is guided from the water spray tray 41 to the filler of the cooler 40, and when the spray water flows down on the filler, mass transfer with the outside air is performed, and the spray water is cooled by the latent heat of evaporation. ing.

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 refrigerator 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.

  FIG. 2 shows a watering device 20 that sprays water on the air heat exchanger 5. In the same figure, although shown about a pair of air heat exchanger 5a, 5b, water is spread | dispersed from the same sprinkler 20 also with respect to another air heat exchanger. Of course, one watering device 20 may be provided for each pair of air heat exchangers 5a and 5b.

A watering header (watering part) 18 is provided above each air heat exchanger 5a, 5b. A large number of holes are formed in the lower surface of each sprinkling header 18 so that spray water flows downward from each hole. Each hole is arranged so that the spray water is evenly distributed to each fin of the air heat exchanger 5.
Below the air heat exchangers 5 a and 5 b, the cooler 40, and the water spray tray 41, a water receiving tray (collection tray) 34 for collecting the sprayed water sprayed on the air heat exchanger 5 and the cooler 40. Is provided.

  A liquid level gauge 36 is provided in the water receiving tray 34. Various controls are performed by grasping the amount of water stored in the water receiving tray 34 by the liquid level gauge 36 in the refrigerator control unit.

A recovery pipe 42 and a circulation pipe 22 are connected between the water receiving tray 34 and each watering header 18. The recovery pipe 42 connects the water receiving tray 34 and the circulating water pump 37, and a drain pipe (first drain pipe) 28 is connected in the middle, and a blow valve ( A first blow valve 29 is provided. By opening the blow valve 29 according to an instruction from the refrigerator control unit, the stored water before and after the circulating water pump 37 at the lowest position can be discharged to the outside. The circulation pipe 22 is provided with a circulation pump 37 for pumping and circulating the water in the water receiving tray and a check valve 50 installed on the downstream side of the circulation pump 37.
The circulation pump 37 is driven by an inverter motor 38, and the flow rate can be variably controlled by frequency control by a refrigerator control unit.

  The upstream end of the branch pipe 26 is connected to the middle position of the circulation pipe 22, that is, between the circulation pump 37 and the check valve 50. The downstream end of the branch pipe 26 is connected to a watering tray 41 located above the cooler 40 described above. Thereby, the spray water guided from the branch pipe 26 is supplied to the cooler 40 via the water spray tray 41. As with the above-mentioned watering header 18, the watering tray 41 is formed with a large number of holes on the lower surface, and the sprayed water flows downward from each hole. A water receiving tray 34 is provided below the cooler 40, and the circulating water that has flowed out of the cooler 40 is collected and guided to the collection pipe 42.

A supply pipe (water supply pipe) 21 is connected to the circulation pipe 22. The supply pipe 21 connects a tap water (clean water) pipe 23 and a circulation pipe 22. A main plug 24 is provided at the downstream end of the tap water pipe 23. The supply pipe 21 is provided with a tap water supply opening / closing valve 25. After connecting the tap water pipe 23 and the supply pipe 21, the tap water is opened to open the tap water supply tap valve 25. Led up to. By opening the tap water supply opening / closing valve 25 in accordance with an instruction from the refrigerator control unit, the tap water can be supplied to the circulation pipe 22 and the watering header 18.
Further, when the tap water is led to the watering header 18 by opening the tap water supply opening / closing valve 25, the check water 50 prevents the tap water from flowing to the circulation pump 37 side.
When the water pressure in the tap water pipe 23 is smaller than the discharge pressure of the circulating water pump 37, water supply cannot be performed, so the supply pipe 21 can be connected to the recovery pipe 42 upstream of the circulating water pump 37. In that case, the check valve 50 becomes unnecessary.

  A chemical supply device 30 is provided in the supply pipe 21. The chemical solution supply device 30 supplies a chemical solution such as a rust preventive or a dispersant to the spray water. The chemical liquid supply by the chemical liquid supply device 30 is not always performed in sprinkling, but is performed at the timing when the blow valve 29 is opened and water is supplied from the supply pipe, or at the initial water filling. It is preferable to suppress the waste of the chemical liquid by interlocking with the blow valve for draining.

Next, the operation of the turbo refrigerator 1 having the above configuration will be described.
As shown in FIG. 1, the refrigerant is compressed by the turbo compressor 3 and sent to the air heat exchanger 5. 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.
In the air heat exchanger 5, the refrigerant is cooled and condensed by applying heat to the air introduced by the outdoor fan 15. In addition, spray water is allowed to flow from the water spray header 18 to each of the air heat exchangers 5a and 5b (see FIG. 2). As the sprayed water flows down on the fin surface of the air heat exchanger 5 in the form of a film, it takes heat away from the refrigerant flowing in the tube. Thereby, the amount of condensation in the air heat exchanger 5 is increased. The amount of heat taken by the cooling water flowing on the fin surface of the air heat exchanger 5 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 evaporation of the spray water largely contributes.

The refrigerant cooled to the low condensation temperature by the spray water in the air heat exchanger 5 is branched into the main flow, the economizer sub expansion valve 7b, and the refrigerant precooler sub expansion valve 7c. The main stream becomes a refrigerant liquid with large supercooling by the economizer 6 and the refrigerant precooler 8, expands by the main expansion valve 7 a, and is sent to the evaporator 9. On the other hand, the refrigerant expanded by the economizer sub-expansion valve 7 b is evaporated by exchanging heat with the economizer 6 and sent to the intermediate stage of the compressor 3. The refrigerant expanded by the refrigerant precooler sub-expansion valve 7 c evaporates by exchanging heat in the refrigerant precooler 8, and is sent to the first suction of the compressor 3.
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 cold water flowing through the cold / hot water nozzle 13, and the cold water is cooled. The cold water obtained from the cold / hot water nozzle 13 has a temperature of about 7 ° C. This cold water is supplied to each indoor unit and used for indoor air conditioning.
The refrigerant evaporated in the evaporator 9 returns to the compressor 3 and is compressed again.

Next, a watering method by the watering device 20 will be described. The operation of the sprinkler 20 includes a blow operation for discharging the spray water to the outside and a normal operation for circulating the spray water without performing the blow operation. Hereinafter, the normal operation will be described first, and then the blow operation will be described.
<Normal operation>
The water stored in the water receiving tray 34 is pumped up by the circulation pump 37 and guided to each watering header 18.
Sprinkling water is supplied from the watering header 18 to the air exchanger 5, cools the air heat exchanger 5, and is collected by the water receiving tray 34.
On the other hand, a part of the water pumped up by the circulation pump 37 is guided to the water spray tray 41 through the branch pipe 26. A part of the circulating water led to the water spray tray 41 is supplied to the cooler 40 and is cooled by its own latent heat of vaporization when passing through the filler of the cooler 40. The cooled water is collected in the water receiving tray 34.

<Blow operation>
When the normal operation is continued, the concentration of the silica component, the magnesium component, the calcium component, etc. contained in the circulating water increases as a part of the circulating water evaporates. When the concentration exceeds a predetermined value, the blow operation is started. The concentration of the circulating water can be calculated by calculation using the heat load of the turbo chiller 1 or the like.
When performing the blow operation, the circulation pump 37 is stopped. And the stored water in the water receiving tray 34 is discharged | emitted by opening the blow valve 29 based on the instruction | indication of a refrigerator control part. On the other hand, the tap water supply opening / closing valve 25 is opened, and tap water is supplied to each watering header 18 via the supply pipe 21. The tap water passes from each sprinkling header 18 through the air heat exchanger 5 and is guided to the water receiving tray 34.
When the liquid level gauge 36 determines that a predetermined amount of tap water has been supplied, the tap water supply opening / closing valve 25 is closed to stop the supply of tap water.
Thereafter, the circulation pump 37 is activated and the operation shifts to normal operation.
When the supply pipe 21 is connected to the recovery pipe 42, the circulating water pump 37 needs to be continuously operated even during the blow operation.

  Now, FIG. 3 shows an enlarged cross section of the water receiving tray 34 according to the present embodiment. As shown in FIG. 3, each water receiving tray 34 is provided with a weir 45 lower than the side wall (circumferential wall) 34 a of the water receiving tray 34. The weir 45 is a partition wall (partition wall) that bisects the space formed in the water receiving tray 34 (the space surrounded by the side wall 34a of the water receiving tray 34) into the first space S1 and the second space S2. It is. The first space S1 has a drain pipe (second drain pipe) 46 connected to the bottom of the water receiving tray 34, and a blow valve (second blow valve) 47 (in the middle of the drain pipe 46). The water collected in the first space S <b> 1 is blown (discharged) to the outside through the drain pipe 46 and the blow valve 47. When the blow valve 47 is closed, the water collected in the first space S1 gets over the weir 45 and enters the second space S2. At this time, dust or the like mixed (mixed) in the water collected in the first space S1 settles and accumulates at the bottom of the first space S1, passes over the weir 45, and enters the second space. It does not enter the space S2 side.

On the other hand, the second space S2 is connected to the circulating water pump 37 through the recovery pipe 42, and the water recovered in the second space S2 and the water that has entered the second space S2 over the weir 45 Is returned to the circulating water pump 37 through the recovery pipe 42.
In addition, the dashed-two dotted line in FIG. 3 has shown the deposit (dust) which consists of the dust etc. which were collect | recovered by the water-receiving tray 34. FIG.

According to this embodiment, the following effects can be obtained.
By the weir 45 provided in the water receiving tray 34, the space formed in the water receiving tray 34 is partitioned into a first space S1 and a second space S2 smaller than the first space S1, and the second The water collected in the space S2 and the water that has passed over the weir 45 and entered the second space S2 are supplied (watered) to the watering header 18 through the circulation pipe 22. On the other hand, the water collected in the first space S1 and the dust accumulated at the bottom in the first space S1 are discharged to the outside by periodically opening the blow valve 47. Thereby, the dust etc. which circulate with spray water can be reduced significantly, and the frequency of clogging of the watering header 18 (more specifically, the hole provided in the watering header 18) and the frequency of cleaning are reduced. It is possible to prevent a decrease in watering efficiency.
Moreover, since the water collect | recovered by 1st space S1 is discharged | emitted regularly and new tap water will be replenished through the supply piping 21, the ratio of the rainwater in spray water will be reduced. It is possible to suppress deterioration of the water quality of the sprayed water, and to suppress corrosion of the air heat exchanger 5, the water receiving tray 34, and the like.

Furthermore, by connecting the supply pipe 21 to the circulation pipe 22 and supplying the tap water directly to the sprinkling header 18 without going through the water receiving tray 34, the temperature of the tap water set to a relatively low temperature. Can be supplied to the air heat exchanger 5 while maintaining the above. Especially in the summer, tap water is not only lower in temperature than circulating water but also lower in temperature than the wet bulb temperature of the outside air, so that the cooling performance of the air heat exchanger can be improved.
Furthermore, the tap water supply opening / closing valve 25 is closed during normal operation and opened during blow operation so that tap water is supplied only during blow operation. Thus, the amount of tap water used can be reduced as much as possible, and the sprayed water can be replenished and supplied with high cooling performance during the blow operation.
By stopping the circulation pump 37 during the blowing operation, the spray water is not circulated during the blowing operation, and the circulating water is not used for cooling the air heat exchanger 5. Thereby, only tap water is supplied at the time of blow operation, and the cooling performance of the air heat exchanger 5 can be further increased.
Moreover, since the circulation pump 37 can be stopped at the time of blow operation, auxiliary power can be reduced.

A second embodiment of the present invention will be described with reference to FIG.
FIG. 4 shows an enlarged cross section of the water receiving tray according to the present embodiment.
As shown in FIG. 4, the water receiving tray 51 according to the present embodiment is different from that of the first embodiment described above in that the bottom surface 52 existing in the first space S1 is an inclined surface. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.

  The bottom surface 52 is inclined toward the inlet of the drain pipe 46, and when the blow valve 47 (see FIG. 2) is opened, water collected in the first space S1 and settled on the bottom surface 52. The accumulated dust or the like flows along the bottom surface 52, flows into the drain pipe 46 from the inlet of the drain pipe 46, and is discharged to the outside.

According to this embodiment, the following effects can be obtained.
The bottom surface 52 existing in the first space S1 is inclined toward the inlet of the drain pipe 46, that is, when the blow valve 47 is opened, the water collected in the first space S1 and the bottom surface 52 Dust and the like accumulated on the top are formed so as to flow into the inlet of the drain pipe 46. As a result, the water collected in the first space S1 and the dust accumulated on the bottom surface 52 can be discharged quickly (rapidly). In addition, since the flow rate of water toward the inlet of the drain pipe 46 is faster than that of the first embodiment, dust accumulated on the bottom surface 52 is efficiently guided to the inlet of the drain pipe 46 and externally. Can be discharged.
Other functions and effects are the same as those of the above-described first embodiment, and thus description thereof is omitted here.

A third embodiment of the present invention will be described with reference to FIG.
FIG. 5 shows an enlarged cross section of the water receiving tray according to the present embodiment.
As shown in FIG. 5, the water receiving tray 61 according to this embodiment is different from that of the second embodiment described above in that one end (upstream end) of the drain pipe 46 is connected to the peripheral portion thereof. Since other components are the same as those of the second embodiment described above, description of these components is omitted here.

  Similar to the second embodiment, the bottom surface 52 is inclined toward the inlet of the drain pipe 46, and when the blow valve 47 (see FIG. 2) is opened, the water collected in the first space S1 and the bottom surface The dust or the like that has settled on 52 flows along the bottom surface 52, flows into the drain pipe 46 from the inlet of the drain pipe 46, and is discharged to the outside.

According to this embodiment, the following effects can be obtained.
The inlet of the drain pipe 46 is provided at the peripheral portion of the water receiving tray 61, that is, at a position where it can be seen by the worker's eyes (the worker can see) and can reach the worker's hand. Thereby, the quantity and state of deposits (dust) consisting of dust etc. can be grasped easily, and deposits (dust) consisting of dust etc. can be easily removed as needed.
Other functions and effects are the same as those of the above-described second embodiment, and thus description thereof is omitted here.

A fourth embodiment of the present invention will be described with reference to FIG.
FIG. 6 shows an enlarged cross section of the water receiving tray according to the present embodiment.
As shown in FIG. 6, the water receiving tray 71 according to the present embodiment has one end (upstream end) of the drain pipe 46 connected to the peripheral portion thereof, and a weir 45 provided upward from the inlet of the recovery pipe 42. This is different from that of the first embodiment described above. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.

  The weir 45 according to the present embodiment is a tubular (tubular) member having the same inner diameter as the inner diameter of the recovery pipe 42 or an inner diameter slightly larger than the inner diameter of the recovery pipe 42, and is formed on the inner peripheral side of the weir 45 The second space S2 is connected to communicate with the internal space of the collection pipe 42.

According to this embodiment, the following effects can be obtained.
Since the weir 45 is composed of a tubular member standing from the inlet of the recovery pipe 42, the second space S2 can be made as small as possible (as small as possible). Thereby, the dust etc. which circulate with sprinkling water can further be reduced, and the frequency of clogging of the watering header 18 (more specifically, the hole provided in the watering header 18) and the frequency of cleaning are further reduced. Can be further prevented from lowering the watering efficiency.
Further, since the water collected in the first space S1 is periodically discharged and new tap water is replenished through the supply pipe 21, the ratio of rainwater in the spray water is further reduced. The deterioration of the quality of the spray water can be further suppressed, and the corrosion of the air heat exchanger 5, the water receiving tray 34, etc. can be further suppressed.
Furthermore, the inlet of the drain pipe 46 is provided at the peripheral portion of the water receiving tray 61, that is, at a position where it can be seen by the worker's eyes (the worker can see) and the worker's hand can reach. Thereby, the quantity and state of deposits (dust) consisting of dust etc. can be grasped easily, and deposits (dust) consisting of dust etc. can be easily removed as needed.
Other functions and effects are the same as those of the above-described first embodiment, and thus description thereof is omitted here.

In the above-described embodiment, the first space S1 is formed in the region where the sprayed water is dripped so that the sprayed water sprayed on the air heat exchanger 5 is recovered only by the first space S1. It is more preferable that the second space S2 is formed in a region other than the region where the sprayed water is dropped.
If comprised in this way, all the sprayed water containing dust etc. will be dripped at 1st space S1, and all the dust etc. in sprayed water will be collect | recovered in 1st space S1. Thereby, the dust etc. which circulate with sprinkling water can be reduced further, and the frequency of clogging of the watering header 18 (more specifically, the hole provided in the watering header 18) and the frequency of cleaning are further increased. It can reduce, and can prevent the fall of watering efficiency further.

  Further, the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist of the present invention. For example, the weir 45 described in the fourth embodiment can be configured by one end (upper end) of the recovery pipe 42. That is, one end of the recovery pipe 42 can be protruded upward from the bottom surface 72 of the water receiving tray 71 to form the weir 45.

1 Turbo refrigerator (heat source machine)
3 Turbo compressor (compressor)
5 air heat exchanger 5a air heat exchanger 5b air heat exchanger 34 water receiving tray 34a peripheral wall 42 collection pipe 45 weir 46 drain pipe 51 water receiving tray 52 bottom surface 61 water receiving tray 71 water receiving tray S1 first space S2 first 2 spaces

Claims (5)

A water receiving tray that is provided below an air heat exchanger that condenses and liquefies gas refrigerant compressed by a compressor by heat exchange with outside air, and collects sprayed water sprayed on the air heat exchanger. There,
A weir that bisects the space surrounded by the peripheral wall into a first space and a second space is erected upward from the bottom surface, overcoming the water collected in the second space and the weir A water receiving tray characterized in that water that has entered the second space is circulated as spray water.   2. The water receiving tray according to claim 1, wherein a bottom surface forming the first space is inclined toward an inlet of a drain pipe communicating with the first space.   The water receiving tray according to claim 1 or 2, wherein an inlet of the drain pipe is provided in the vicinity of the peripheral wall.   The weir is a tubular member having an inner diameter that is the same as or slightly larger than the inner diameter of the recovery pipe communicating with the second space, and the second space formed on the inner peripheral side of the weir is the recovery pipe The water receiving tray according to any one of claims 1 to 3, wherein the water receiving tray is connected so as to communicate with the interior space. A heat source machine comprising the water receiving tray according to any one of claims 1 to 4.

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