CN217357244U - Air conditioning system - Google Patents

Abstract

The application relates to an air conditioning system, and belongs to the technical field of air conditioning descaling. The application provides an air conditioning system, includes: a heat exchanger including a refrigerant heat exchange tube; a water treatment device; and the spraying device comprises a main water inlet and a spraying head, wherein the main water inlet is configured to be selectively communicated with the spraying head through or not through the water treatment device, so that the spraying head can spray the water treated by the water treatment device and the water not treated by the water treatment device to the refrigerant heat exchange pipe. The air conditioning system is not easy to scale after being used for a long time, the operating condition of the spraying device is good, and the heat exchanger also has good heat exchange efficiency.

Description

Air conditioning system

Technical Field

The application relates to the technical field of air conditioner descaling, in particular to an air conditioning system.

Background

The multi-split air conditioning system can be connected with more than two indoor units through one outdoor unit, and is widely applied to medium and small buildings and partial public buildings, but the outdoor unit of the multi-split air conditioning system also has the problem of poor heat dissipation caused by limited installation space. At present, a refrigerant heat exchange tube of an outdoor unit can be cooled by adopting a spray cooling mode to improve the heat exchange efficiency of the outdoor unit, but scale is easily formed on the surface of the refrigerant heat exchange tube and at a spray header during cooling water evaporation, and the scale is long and long, so that the heat exchange efficiency of the outdoor unit is reduced, and the spray header is blocked.

SUMMERY OF THE UTILITY MODEL

Therefore, the air conditioning system is provided, scaling is not prone to occurring after the air conditioning system is used for a long time, the operation working condition of the spraying device is good, and the heat exchanger has good heat exchange efficiency.

Some embodiments of the present application provide an air conditioning system, including: a heat exchanger comprising a refrigerant heat exchange tube; a water treatment device; and the spraying device comprises a main water inlet and a spraying head, wherein the main water inlet is configured to be selectively communicated with the spraying head through or not through the water treatment device, so that the spraying head can spray the water treated by the water treatment device and the water not treated by the water treatment device to the refrigerant heat exchange pipe.

The air conditioning system of this application embodiment includes the water treatment ware, total water inlet can selectively pass through or not pass through water treatment ware and shower head intercommunication, make spray set can selectively spray the cooling water after the water treatment ware is handled and the cooling water that does not handle through the water treatment ware to the refrigerant heat exchange tube, not only can reduce the consumption of the clean packing piece of water treatment ware, can also rinse the refrigerant heat exchange tube after spraying the cooling process, the difficult scale deposit in surface of shower head and refrigerant heat exchange tube, not only make spray set's operating condition good, and the heat exchanger also has better heat exchange efficiency.

According to some embodiments of the present application, a spray device includes a first trunk, a second trunk, a first branch, and a second branch, an inlet of the first trunk is configured as the total water inlet, an outlet of the first trunk selectively communicates with an inlet of the second trunk through the first branch or the second branch, and a water treatment device is disposed in the first branch, and an outlet of the second trunk communicates with the spray header.

In the above scheme, the export of first main road can be through first branch road or with second branch road and second main road intercommunication, can realize that spray set uses the cooling water that does not pass through the water treatment ware and purify when the refrigerant heat exchange tube of normal spray cooling heat exchanger, reduce the consumption of the clean granule of water treatment ware, use the cooling water after the water treatment ware purifies to continue to spray the refrigerant heat exchange tube after spray cooling process finishes, wash it, alleviate the scale deposit phenomenon on the surface of refrigerant heat exchange tube, and alleviate the jam phenomenon of the water jet hole department of shower head. Because the surfaces of the spray header and the refrigerant heat exchanger are not easy to scale, the operating condition of the spray header is good, and the heat exchanger of the air conditioning system has better heat exchange efficiency.

According to some embodiments of the present application, the spray device further comprises: the three-way valve comprises a first port, a second port and a third port, an outlet of the first trunk is communicated with the first port, an inlet of the first branch is communicated with the second port, and an inlet of the second branch is communicated with the third port.

In the above scheme, three ports of the three-way valve are respectively communicated with the outlet of the first trunk, the outlet of the first branch and the outlet of the second branch, the first port and the second port of the three-way valve are communicated, the first trunk and the first branch can be communicated, the first port and the third port of the three-way valve are communicated, the first trunk and the second trunk can be communicated, the assembly is convenient, and the control process is simple.

According to some embodiments of the present application, the spray device further comprises a first switch valve disposed in the first branch and a second switch valve disposed in the second branch.

In the scheme, as the first branch and the second branch are respectively provided with the switch valve, the cooling water in the first trunk can enter the second trunk through the first branch by controlling the first switch valve to be opened and the second switch valve to be closed; by controlling the first switch valve to be closed and the second switch valve to be opened, the cooling water in the first trunk line can enter the second trunk line through the second branch line; the first switch valve and the second switch valve can be closed when the spraying device does not spray, so that the safety of the spraying device is improved.

According to some embodiments of the present application, the spray device further comprises: and the water filter is arranged on the second trunk line or the second branch line.

In the above scheme, the water filter is arranged on the second trunk line or the second branch line, and can physically filter the cooling water in the normal spraying process of the spraying device, so that impurities in the cooling water are prevented from blocking the water spraying holes of the spraying head.

According to some embodiments of the present application, the spray device further comprises: and the third switch valve is arranged on the second main line.

In the above scheme, the third on-off valve is arranged on the second trunk line, and the on-off of the spraying device can be realized by opening or closing the third on-off valve.

According to some embodiments of the present application, the water treatment apparatus comprises: a tank filled with a cleaning filler, the tank having a water inlet and a water outlet; the first filter screen is arranged at the water outlet and used for blocking impurities in the cooling water from flowing out of the water outlet.

In above-mentioned scheme, the internal clean packing that has of jar can handle the cooling water and purify, and first filter screen sets up in water outlet department, can block the impurity of cooling water and follow water outlet department and flow out, makes the water treatment ware have better purification ability, can also reduce the impurity content in the cooling water in the second trunk road.

According to some embodiments of the present application, the first screen has a mesh aperture smaller than a water spray aperture of the showerhead.

In the scheme, the first filter screen can physically filter the cooling water while preventing the cleaning filling piece from flowing out of the tank body, and can prevent impurities in the cooling water from entering the second trunk line from the first branch line; the water hole aperture of shower head is less than the mesh aperture of first filter screen, can allow the impurity in the cooling water after first filter screen filters to spout in can following the hole for water spraying of shower head, can not cause the hole for water spraying to block.

According to some embodiments of the present application, the water treatment apparatus further comprises: the second filter screen is arranged at the water inlet and used for blocking the cleaning filling piece to flow out of the water inlet.

In the above scheme, the second filter screen sets up in water inlet department, can block clean filler and flow out from the water inlet, causes clean filler to run off, reduces the purification efficiency of water treater.

According to some embodiments of the present application, the air conditioning system is a multi-split air conditioning system, and the heat exchanger is an outdoor unit of the multi-split air conditioning system.

In the above scheme, the multi-split air conditioning system comprises more than two indoor units and one outdoor unit, and the outdoor unit has high requirements on heat exchange efficiency due to limited installation space and higher maintenance cost. The heat exchanger in the embodiment of the application can be used as an outdoor unit of a multi-split air conditioning system, can improve the heat exchange efficiency in a spray cooling mode, and is not easy to scale after being used for a long time.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 illustrates a system flow diagram of a first form of air conditioning system in accordance with certain embodiments of the present application;

FIG. 2 illustrates a schematic diagram of a first form of air conditioning system in accordance with certain embodiments of the present application;

FIG. 3 is a schematic view of an assembled structure of a shower device and a water treatment device in the air conditioning system of FIG. 2;

FIG. 4 illustrates a system flow diagram of an air conditioning system of a second form of some embodiments of the present application;

FIG. 5 is a schematic view of an assembled structure of the shower device and the water treatment device in the air conditioning system of FIG. 4;

FIG. 6 illustrates a system flow diagram for a third form of air conditioning system in accordance with certain embodiments of the present application;

FIG. 7 is a schematic view of an assembled structure of the shower device and the water treatment device in the air conditioning system of FIG. 6;

the figures are not drawn to scale.

Icon: 100-an air conditioning system; 10-a heat exchanger; 11-refrigerant heat exchange tubes; 12-a fan; 13-a second controller; 14-a second housing; 15-a user terminal; 20-a spraying device; 21-first trunk; 211-total water inlet; 22-second trunk; 221-a third on-off valve; 23-a first branch; 231-a water treatment device; 2311-tank body; 23111-water inlet; 23112-a water outlet; 23113-feeding port; 2312-a first screen; 2313-a second screen; 232-first on-off valve; 24-a second branch; 241-a second on-off valve; 25-three-way valve; 251-a first port; 252-a second port; 253-a third port; 26-a water filter; 27-a shower head; 271-water spray holes; 28-a first housing; 29-first controller.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

FIG. 1 illustrates a system flow diagram of an air conditioning system in a first form of some embodiments of the present application; FIG. 2 illustrates a schematic diagram of a first form of air conditioning system in accordance with certain embodiments of the present application.

As shown in fig. 1 and 2, some embodiments of the present application provide an air conditioning system 100 including a heat exchanger 10, a shower device 20, and a water treatment device 231, the heat exchanger 10 including a refrigerant heat exchange pipe 11, the shower device 20 including a total water inlet 211 and a shower head 27, the total water inlet 211 being configured to selectively communicate with the shower head 27 through or without the water treatment device 231, so that the shower head 27 can shower water treated by the water treatment device 231 and water treated by the water treatment device 231 to the refrigerant heat exchange pipe 11.

The air conditioning system 100 of the embodiment of the application comprises a water treatment device 231, the main water inlet 211 can be selectively communicated with the spray head 27 through or without the water treatment device 231, so that the spraying device 20 can selectively spray cooling water treated by the water treatment device 231 and cooling water not treated by the water treatment device 231 to the refrigerant heat exchange tube 11, the consumption of cleaning filling pieces of the water treatment device 231 can be reduced, the refrigerant heat exchange tube 11 can be cleaned after the spraying and cooling process is finished, the surfaces of the spray head 27 and the refrigerant heat exchange tube 11 are not easy to scale, the operating condition of the spraying device 20 is good, and the heat exchanger 10 also has good heat exchange efficiency.

In some embodiments of the present application, the shower device 20 is external to the heat exchanger 10, and the water treatment device 231 is integrated into the shower device 20. Specifically, the heat exchanger 10 includes a second case 14, and the refrigerant heat exchange tubes 11 are disposed inside the second case 14. The shower device 20 has a first housing 28, a main water inlet 211 and a shower head 27 exposed to the outside of the first housing 28, the remaining components being disposed inside the first housing 28, and a water treatment device 231 also being disposed inside the first housing 28.

In other embodiments, the water treatment device 231 may be disposed outside the first housing 28, or the shower device 20, the water treatment device 231, and the refrigerant heat exchange tube 11 may be disposed inside the second housing 14.

In some embodiments of the present application, the shower header 27 of the shower device 20 sprays cooling water from the exterior of the second housing 14 through the grid of the second housing 14 to the refrigerant heat exchange tubes 11.

In other embodiments, the shower head 27 may also extend into the second housing 14 to spray cooling water to the refrigerant heat exchange tubes 11 from the inside of the second housing 14.

Fig. 3 is a schematic view showing an assembly structure of the shower device and the water treatment device in the air conditioning system of fig. 2.

As shown in fig. 1, 2 and 3, in some embodiments of the present application, spray device 20 includes a first trunk 21, a second trunk 22, a first branch 23 and a second branch 24, an inlet of first trunk 21 is configured as a total water inlet 211, an outlet of first trunk 21 is selectively communicated with an inlet of second trunk 22 through first branch 23 or second branch 24, a water treatment device 231 is disposed in first branch 23, and an outlet of second trunk 22 is communicated with spray header 27.

In the above-mentioned solution, the outlet of the first main line 21 can be communicated with the second main line 22 through the first branch 23 or the second branch 24, so that the spraying device 20 can use the cooling water which is not purified by the water treatment device 231 when the refrigerant heat exchange tube 11 of the cooling heat exchanger 10 is normally sprayed, the consumption of the cleaning filler of the water treatment device 231 is reduced, the refrigerant heat exchange tube 11 is continuously sprayed and cleaned by the cooling water purified by the water treatment device 231 after the spraying and cooling process is finished, the scaling phenomenon on the surface of the refrigerant heat exchange tube 11 is relieved, and the blocking phenomenon at the water spraying hole 271 of the spray header 27 is relieved. The surfaces of the spray header 27 and the refrigerant heat exchange tube 11 are not easy to scale, so that the operating condition of the spray device 20 is good, and the heat exchanger 10 of the air conditioning system 100 has good heat exchange efficiency.

It can be understood that the first trunk 21, the second branch 24 and the second trunk 22 may be three water pipes which are independently arranged, and the first trunk 21 and the second branch 24, and the second branch 24 and the second trunk 22 are connected by other intermediate components; the first trunk 21, the second branch 24 and the second trunk 22 may also be three sections of a same water pipe with continuous pipe walls, an outlet of the first trunk 21 and an inlet of the second branch 24 are defined as where the water pipe communicates with an inlet of the first branch 23, and an outlet of the second branch 24 and an inlet of the second trunk 22 are defined as where the water pipe communicates with an outlet of the first branch 23.

It is to be understood that the water treatment device 231 may be an electric pulse device or may be a device for softening calcium and magnesium ions in the cooling water by a chemical reaction.

It is understood that the number of the shower headers 27 may be plural, and a plurality of the shower headers 27 are connected in parallel to the outlet of the second trunk 22 to perform overall shower of the refrigerant heat exchange pipe 11.

The specific configurations of the shower device 20 and the water treatment device 231 according to the embodiment of the present invention will be described in detail below.

As shown in fig. 1, 2 and 3, the spraying device 20 includes a first housing 28, a first branch 23, a second branch 24 and a water treatment device 231 are disposed inside the first housing 28, an inlet of the first trunk line 21 extends out of the first housing 28 to be connected with an external cooling water supply device, an outlet of the second trunk line 22 extends out of the first housing 28 and is connected with a spray header 27, and the spray header 27 is disposed outside the first housing 28 to spray cooling water to the refrigerant heat exchanging pipe 11.

In other embodiments, the water treatment device 231 may be provided outside the first casing 28.

The spraying device 20 further includes a first controller 29, and the first controller 29 is disposed inside the first housing 28 for controlling the automatic operation of the spraying device 20.

There are various ways to realize the selective communication between the outlet of the first trunk 21 and the inlet of the second trunk 22 through the first branch 23 or the second branch 24, and the first trunk 21, the first branch 23, and the second branch 24 may be connected by a three-way valve 25 described below, the communication between the first trunk 21 and the first branch 23 or the second branch 24 may be realized by controlling the three-way valve 25, or one switching valve may be provided in each of the first branch 23 and the second branch 24, and the on/off of each of the first branch 23 and the second branch 24 may be independently controlled by opening and closing each switching valve.

As shown in fig. 1 and 3, in some embodiments of the present application, spray device 20 includes a three-way valve 25, three-way valve 25 including a first port 251, a second port 252, and a third port 253, an outlet of first trunk 21 communicating with first port 251, an inlet of first branch 23 communicating with second port 252, and an inlet of second branch 24 communicating with third port 253.

Specifically, the three-way valve 25 is in signal connection with the first controller 29, and the first port 251 of the three-way valve 25 is in communication with the second port 252 or the third port 253 under the control of the first controller 29.

In the above solution, the three ports of the three-way valve 25 are respectively communicated with the outlet of the first trunk 21, the outlet of the first branch 23, and the outlet of the second branch 24, and the first port 251 and the second port 252 of the three-way valve 25 are communicated to realize the communication between the first trunk 21 and the first branch 23, and the first port 251 and the third port 253 of the three-way valve 25 are communicated to realize the communication between the first trunk 21 and the second trunk 22.

FIG. 4 illustrates a system flow diagram of an air conditioning system of a second form of some embodiments of the present application; fig. 5 is a schematic view showing an assembly structure of the shower device and the water treatment device in the air conditioning system of fig. 4.

In other embodiments of the present disclosure, as shown in fig. 4 and 5, the spraying device 20 further includes a first switch valve 232 and a second switch valve 241, the first switch valve 232 is disposed in the first branch 23, and the second switch valve 241 is disposed in the second branch 24.

Specifically, the first switching valve 232 and the second switching valve 241 are both in signal connection with the first controller 29, and one of the first switching valve 232 and the second switching valve 241 is opened and the other is closed under the control of the first controller 29.

In the above scheme, since the first branch 23 and the second branch 24 are respectively provided with one switching valve, the cooling water in the first trunk 21 can enter the second trunk 22 through the first branch 23 by controlling the first switching valve 232 to be opened and the second switching valve 241 to be closed; by controlling the first switch valve 232 to be closed and the second switch valve 241 to be opened, the cooling water in the first trunk line 21 can enter the second trunk line 22 through the second branch line 24; the first and second switching valves 232 and 241 may be closed when the shower device 20 does not perform a shower, so as to improve safety of the shower device 20.

In other embodiments, the three-way valve 25 may also be used to communicate the inlet of the second main line 22, the outlet of the first branch 23, and the outlet of the second branch 24, and by controlling the communication between the second main line 22 and one of the first branch 23 and the second branch 24, the cooling water in the first main line 21 enters the second main line 22 through one of the first branch 23 and the second branch 24.

As shown in fig. 5, in some embodiments of the present application, the water treatment device 231 includes a tank body 2311 and a first filter screen 2312, the tank body 2311 is filled with a cleaning filler, the tank body 2311 has a water inlet 23111 and a water outlet 23112, and the first filter screen 2312 is disposed at the water outlet 23112 for blocking impurities in the cooling water from flowing out of the water outlet 23112.

Wherein, the cleaning filler is silicon phosphorus crystal, and the cooling water is softened by chemical reaction with calcium magnesium compound in the cooling water.

The cleaning filler can be granular, strip-shaped or porous block-shaped and the like. In some embodiments of the present application, the cleaning filler is granular, and the upper side of the tank 2311 is further provided with a feeding port 23113 for feeding the cleaning filler into the tank 2311.

In the above scheme, the tank body 2311 is internally provided with the cleaning filler to treat and purify the cooling water, the first filter screen 2312 is arranged at the water outlet 23112 to prevent impurities in the cooling water from flowing out of the water outlet 23112, so that the water processor 231 has better treatment and purification capacity, and the impurity content in the cooling water in the second main line can be reduced.

In some embodiments of the present application, the mesh size of the first screen 2312 is smaller than the hole size of the water spray holes 271 of the showerhead 27.

In the above scheme, the first filter screen 2312 can physically filter the cooling water while blocking the clean filler from flowing out of the tank body 2311, and block impurities in the cooling water from entering the second main path from the first branch path 23; the water hole diameter of the spray header 27 is smaller than the mesh hole diameter of the first sieve 2312, so that impurities in the cooling water filtered by the first sieve 2312 can be sprayed out of the water spraying holes 271 of the spray header 27, and the water spraying holes 271 cannot be blocked.

As shown in FIG. 5, in some embodiments of the present application, the water treatment unit 231 further comprises a second screen 2313 disposed at the water inlet 23111 for blocking the flow of the cleaning filler from the water inlet 23111.

In above-mentioned scheme, second filter screen 2313 sets up in water inlet 23111 department, can block clean packing piece from water inlet 23111 outflow, avoids the cooling water in the first trunk to mix with clean packing piece and causes the flow resistance to increase.

In another embodiment, the water treatment device 231 may be energized by an electrical pulse device, which is communicated with the first controller 29 and energized to soften the cooling water.

In the spray device 20 of the embodiment of the present application, even when the cooling water is not required to be purified, the cooling water can be filtered, and the water spray holes 271 of the spray header 27 are prevented from being clogged by impurities in the cooling water.

FIG. 6 illustrates a system flow diagram of an air conditioning system of a third form of some embodiments of the present application; fig. 7 is a schematic view showing an assembly structure of the shower device and the water treatment device in the air conditioning system of fig. 6.

As shown in fig. 6 and 7, in some embodiments of the present disclosure, the spraying device 20 further includes a water filter 26 disposed on the second trunk 22 or the second branch 24.

The water filter 26 has a replaceable cartridge to facilitate timely replacement of the cartridge with a new one. As shown in fig. 1 to 4, the water filter 26 may be provided in the second main line 22, and the cooling water is physically filtered using the water filter 26 regardless of whether or not the cooling water is purified by the water treatment device 231; as shown in fig. 5 and 6, the water filter 26 may be provided in the second branch passage 24, and may physically filter only the cooling water that has not passed through the water treatment device 231.

In the above solution, the water filter 26 is disposed on the second trunk 22 or the second branch 24, and can physically filter the cooling water during the normal spraying process of the spraying device 20, so as to prevent impurities in the cooling water from blocking the water spraying holes 271 of the spray header 27.

In other embodiments, the water filter 26 may be disposed in the first trunk 21 to physically filter the cooling water that does not enter the first branch 23 or the second branch 24.

As shown in fig. 6 and 7, in some embodiments of the present application, the spraying device 20 further includes a third on/off valve 221 disposed in the second trunk 22.

The third on-off valve 221 is disposed inside the first casing 28, the third on-off valve 221 is an electromagnetic valve in signal connection with the first controller 29, and the first controller 29 opens and closes the third on-off valve 221; the third on/off valve 221 may be disposed outside the first casing 28, and the third on/off valve 221 may be opened and closed manually.

In the above configuration, the third on/off valve 221 is provided in the second trunk line 22, and the on/off of the shower device 20 can be realized by opening or closing the third on/off valve 221.

In other embodiments, the third on/off valve 221 may be disposed in the first trunk line 21.

In some embodiments of the present application, the air conditioning system 100 is a multi-split air conditioning system, and the heat exchanger 10 is an outdoor unit of the multi-split air conditioning system.

Specifically, the air conditioning system 100 includes an indoor unit and an outdoor unit, the refrigerant heat exchange tube 11 is a closed circulation tube, and a part of the refrigerant heat exchange tube 11 is located inside the outdoor unit, and another part is located inside the indoor unit. The outdoor unit is the heat exchanger 10 in the embodiment of the present application.

In the above scheme, the multi-split air conditioning system comprises more than two indoor units and one outdoor unit, and the outdoor unit has high requirements on heat exchange efficiency due to limited installation space and higher maintenance cost. The heat exchanger 10 in the embodiment of the present application, as an outdoor unit of a multi-split air conditioning system, can improve heat exchange efficiency by adopting a spray cooling method, and is not prone to scaling after being used for a long time.

As shown in fig. 7, the heat exchanger 10 further includes a fan 12, a second controller 13, and a user terminal 15, the refrigerant heat exchanging pipe 11, the fan 12, and the second controller 13 are all disposed inside the second housing 14, the user terminal 15 is in signal connection with the second controller 13, and the user terminal 15 is an operation panel exposed to the surface of the second housing 14 or a remote controller in wireless signal connection with the first controller 29. The fan 12 is configured to blow air to the refrigerant heat exchanging pipe 11 to air-cool the refrigerant heat exchanging pipe 11. The second controller 13 is in signal connection with the first controller 29 to realize the automatic operation of the air conditioning system 100.

The delayed spraying process of the air conditioning system 100 of the embodiment of the present application is as follows:

the air conditioning system 100 normally operates, the fan 12 is started and supplies air to the refrigerant heat exchange tube 11, the first port 251 and the third port 253 of the three-way valve 25 are communicated, cooling water sequentially passes through the first main line 21, the second branch line 24 and the second main line 22, is sprayed out from the spray header 27, and is sprayed to the refrigerant heat exchange tube 11 without being purified by the water treatment device 231;

the heat exchange quantity requirement of the air conditioning system 100 is reduced to a preset value, the second controller 13 sends a spraying closing signal to the first controller 29, the first controller 29 responds to the spraying closing signal and sends a spraying delay closing signal, the three-way valve 25 responds to the delay spraying signal and switches the first port 251 to be communicated with the second port 252 from the third port 253, cooling water sequentially passes through the first main line 21, the first branch 23 and the second main line 22 and is sprayed out of the spray header 27, the cooling water purified by the water treatment device 231 is sprayed to the refrigerant heat exchange tube 11, and the refrigerant heat exchange tube 11 and the water spray holes 271 of the spray header 27 are cleaned;

after waiting for the first preset time, the third on/off valve 221 responds to the delayed spraying signal and is closed, the spraying device 20 stops operating, and the three-way valve 25 switches the first port 251 to be communicated with the third port 253 due to the communication of the second port 252, so as to wait for the next spraying.

The spraying device 20 of the embodiment of the application is used for spraying and cooling the outdoor unit of the multi-split air conditioning system, cooling water which is not purified by the water treatment device 231 is used for spraying and cooling in the normal cooling process, and the water spraying holes 271 of the spraying head 27 and the refrigerant heat exchange tube 11 are cleaned for the first preset time by using the cooling water purified by the water treatment device 231 only after the spraying device 20 can receive a spraying closing signal, so that the consumption of cleaning and filling pieces in the water treatment device 231 can be reduced, the filling cost of the spraying device 20 is reduced, the scaling phenomenon on the surfaces of the water spraying holes 271 and the refrigerant heat exchange tube 11 can be relieved, and the cleaning and maintenance cost of the heat exchanger 10 is reduced.

It should be noted that the features of the embodiments in the present application may be combined with each other without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. An air conditioning system (100), comprising:

a heat exchanger (10) comprising a refrigerant heat exchange tube (11);

a water treatment device (231);

a spray device (20) comprising a main water inlet and a spray header (27), the main water inlet being configured to selectively communicate with the spray header (27) with or without the water treatment device (231) so that the spray header (27) can spray the refrigerant heat exchange tube (11) with water treated by the water treatment device (231) and water not treated by the water treatment device (231).

2. Air conditioning system (100) according to claim 1, wherein the spraying device (20) comprises a first main line (21), a second main line (22), a first branch (23) and a second branch (24), the inlet of the first main line (21) is configured as the total water inlet, the outlet of the first main line (21) is selectively communicated with the inlet of the second main line (22) through the first branch (23) or the second branch (24), the water treatment device (231) is arranged on the first branch (23), and the outlet of the second main line (22) is communicated with the spray head (27).

3. Air conditioning system (100) according to claim 2, wherein said spraying device (20) further comprises:

a three-way valve (25), the three-way valve (25) comprising a first port (251), a second port (252) and a third port (253), the outlet of the first main (21) being in communication with the first port (251), the inlet of the first branch (23) being in communication with the second port (252), the inlet of the second branch (24) being in communication with the third port (253).

4. Air conditioning system (100) according to claim 2, wherein said spraying device (20) further comprises a first switching valve (232) and a second switching valve (241), said first switching valve (232) being arranged in said first branch (23), said second switching valve (241) being arranged in said second branch (24).

5. Air conditioning system (100) according to claim 2, wherein said spraying device (20) further comprises:

a water filter (26) disposed on the second trunk line (22) or the second branch line (24).

6. The air conditioning system (100) of claim 2, wherein the spray device (20) further comprises:

and a third on/off valve (221) provided in the second trunk line (22).

7. The air conditioning system (100) of any of claims 1-6, wherein the water treatment device (231) comprises:

a tank (2311) filled with a cleaning filler, said tank (2311) having a water inlet (23111) and a water outlet (23112);

the first filter screen (2312) is arranged at the water outlet (23112) and used for preventing impurities in the cooling water from flowing out of the water outlet (23112).

8. Air conditioning system (100) according to claim 7, wherein the mesh aperture of the first sieve (2312) is smaller than the water jet (271) aperture of the shower head (27).

9. The air conditioning system (100) of claim 7, wherein the water treatment device (231) further comprises:

a second sieve (2313) disposed at the water inlet (23111) for blocking the cleaning filler from flowing out of the water inlet (23111).

10. The air conditioning system (100) of any of claims 1-6, wherein the air conditioning system (100) is a multi-split air conditioning system, and the heat exchanger (10) is an outdoor unit of the multi-split air conditioning system.

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