Cooling device for heat exchanger and air conditioner

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a cooling device for a heat exchanger, which comprises a cooling pipe group arranged in a shell of the heat exchanger and comprising a water inlet section and a water outlet section which are adjacently connected; wherein the water inlet section is communicated with cooling water and an anti-freezing solution, so that the cooling water or the anti-freezing solution is supplied into the water outlet section from the water inlet section; the water outlet section is located above the heat exchanger and provided with a plurality of spraying structures. And the spraying structure extends downwards among a plurality of rows of heat exchange tubes of the heat exchanger so as to spray cooling water or anti-freezing liquid. In this way, cooling water or anti-freezing liquid can make contact with the inner side surfaces of the heat exchange pipes better by spraying the heat exchange pipes in the installation intervals, and therefore the cooling effect or the anti-freezing effect is better. The utility model further discloses the air conditioner.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, for example, to a cooling device and an air conditioner for a heat exchanger. Background Art

[0002] In the summer, when the air conditioner is running in cooling mode, the outdoor heat exchanger acts as a condenser, and the refrigerant circulates in the condenser to condense and release heat. When the air conditioner is running in a high temperature environment, the outdoor unit of the air conditioner may have insufficient heat exchange capacity of the condenser or excessive operating conditions of the compressor due to limited installation space or dirty and blocked condenser, and the system may even shut down due to high-pressure protection, seriously affecting user use.

[0003] The related technology discloses a spray cooling device, including a water inlet pipe and at least one group of spray modules, the spray module includes at least one group of spray components, the spray component includes a nozzle and a connecting joint, a spray interface and at least one connecting interface are provided on the connecting joint, wherein a connecting interface of a group of spray components constitutes the water inlet end of the corresponding spray module, one end of the water inlet pipe is connected to the water inlet end, and the other end is connected to a water source; the nozzle on each group of spray components is connected to the corresponding spray interface.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0005] The spray cooling device can only spray the surface of the outermost heat exchange tube, but cannot spray the inner heat exchange tube with worse heat exchange efficiency, so the cooling effect is poor.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a cooling device for a heat exchanger and an air conditioner, which solve the problem of poor cooling effect.

[0009] In some embodiments, the cooling device for the heat exchanger comprises:

[0010] The cooling tube group is arranged in the shell of the heat exchanger, and includes a water inlet section and a water outlet section which are adjacently connected;

[0011] Among them, the water inlet section is connected to the cooling water and the antifreeze so that the cooling water or the antifreeze is supplied from the water inlet section to the water outlet section; the water outlet section is located above the heat exchanger, and the water outlet section is provided with a plurality of spray structures; the spray structures extend downward between the multiple rows of heat exchange tubes of the heat exchanger to spray cooling water or antifreeze.

[0012] In this embodiment, the heat exchanger has multiple rows of heat exchange tubes, and there is an installation interval between adjacent rows of heat exchange tubes, and the spray structure extends into the installation interval. Cooling water or antifreeze enters the water outlet section from the water inlet section, and then is sprayed onto the heat exchange tube by the spray structure. In this way, compared with spraying the outer surface of the heat exchanger, spraying the heat exchange tube from the installation interval can better allow the cooling water or antifreeze to contact the inner surface of the heat exchange tube, thereby achieving a better cooling effect or antifreeze effect. Furthermore, the spray structure can be installed on the heat exchange tube with poor heat exchange, thereby effectively cooling; or, the spray structure can be installed on the heat exchange tube that is prone to frost, thereby effectively preventing freezing.

[0013] Optionally, the water inlet section is provided with a flow regulating valve, and the flow regulating valve is used to adjust the flow of the spray structure.

[0014] In this embodiment, the flow rate entering the spray structure 111 can be accurately controlled by the flow regulating valve, and the flow rate stability of the spray structure can be maintained by adjusting the flow rate.

[0015] Optionally, the water inlet section is provided with a pressure sensor, and the pressure sensor is used to detect the water pressure in the cooling tube group.

[0016] In this embodiment, real-time monitoring of the water pressure is helpful to timely discover potential faults or abnormal conditions, such as blockage or leakage of the cooling pipe group.

[0017] Optionally, the water inlet section is provided with a filter, and the filter is used to filter the cooling water entering the spray structure.

[0018] In this embodiment, the filter can effectively remove impurities, particulate matter or suspended matter in the cooling water, ensuring the purity of the water entering the spray structure.

[0019] Optionally, a plurality of water outlet holes are provided on the lower side of the water outlet section, and the spray structure includes:

[0020] The capillary tube or capillary plate has its upper end connected to the water outlet and its lower end extending between the multiple rows of heat exchange tubes.

[0021] In this embodiment, the capillary tube and the capillary plate can be extended and installed between adjacent rows of heat exchange tubes, and the cooling water in the water outlet section is sprayed onto the heat exchange tubes.

[0022] Optionally, the length of the capillary tube or the capillary plate is less than or equal to 3000 mm; and / or,

[0023] The distance between adjacent capillaries or capillary plates ranges from 10 mm to 3000 mm.

[0024] In this embodiment, by limiting the length of the capillary tube, it is advantageous to install the capillary tube or the capillary plate into the installation interval between adjacent rows of heat exchange tubes, and a better spraying effect can be achieved.

[0025] Optionally, when the spray structure includes a capillary tube, the inner diameter of the capillary tube ranges from 0.1 mm to 6.5 mm, and the outer diameter of the capillary tube ranges from 0.2 mm to 7.5 mm.

[0026] In this embodiment, by limiting the inner diameter of the capillary tube, it is convenient to install the capillary tube into the installation interval between adjacent rows of heat exchange tubes, and a better spraying effect can be achieved.

[0027] Optionally, when the spray structure includes a capillary plate, the width of the capillary plate is in the range of 13 mm to 20 mm.

[0028] In this embodiment, by limiting the width of the capillary plate, it is advantageous to install the capillary plate into the installation interval between adjacent rows of heat exchange tubes, and a better spraying effect can be achieved.

[0029] In some embodiments, the air conditioner includes the cooling device for the heat exchanger described in any of the above embodiments.

[0030] In this embodiment, the internal installation does not affect the appearance of the air conditioner, and effectively improves the performance of the air conditioner, thereby achieving the purpose of improving high-temperature cooling and low-temperature heating performance.

[0031] Optionally, a water receiving pan is provided below the heat exchanger, and the water inlet section is connected to the water receiving pan so that the condensed water can be used as cooling water.

[0032] In this embodiment, condensed water is collected by a water receiving pan and supplied to the spray structure as cooling water, so that efficient use of condensed water can be achieved and the energy efficiency of the entire air-conditioning system can be improved.

[0033] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0035] Figure 1 is a structural schematic diagram of a cooling device provided by an embodiment of the present disclosure;

[0036] Figure 2 is a schematic diagram of the layout of a water outlet section provided in an embodiment of the present disclosure;

[0037] Figure 3 is a schematic diagram of the layout of another water outlet section provided in an embodiment of the present disclosure;

[0038] Figure 4 is a length schematic diagram of a spray structure provided by an embodiment of the present disclosure;

[0039] Figure 5 It is a schematic diagram of the spacing between adjacent spray structures provided in an embodiment of the present disclosure.

[0040] Reference numerals:

[0041] 100: water inlet section; 110: water outlet section; 111: spray structure; 120: flow control valve; 130: pressure sensor; 140: filter; 150: heat exchanger; 151: heat exchange tube. DETAILED DESCRIPTION

[0042] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0043] The terms "first", "second", etc. in the specification and claims of the disclosed embodiments and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate to describe the disclosed embodiments here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0044] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0045] In addition, the terms "disposed", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0046] Unless otherwise stated, the term "plurality" means two or more.

[0047] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0048] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0049] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0050] Combination Figure 1-5 As shown, the embodiment of the present disclosure provides a cooling device for a heat exchanger, including a cooling tube group. Figure 1 As shown, the cooling tube group is arranged in the shell of the heat exchanger 150, including an adjacently connected water inlet section 100 and a water outlet section 110; wherein the water inlet section 100 is connected to cooling water and antifreeze so that cooling water or antifreeze is supplied from the water inlet section 100 to the water outlet section 110; the water outlet section 110 is located above the heat exchanger 150, and the water outlet section 110 is provided with a plurality of spray structures 111; the spray structure 111 extends downwardly between the multiple rows of heat exchange tubes 151 of the heat exchanger 150 to spray cooling water or antifreeze.

[0051] In this embodiment, the heat exchanger 150 has multiple rows of heat exchange tubes 151, and there is an installation interval between adjacent rows of heat exchange tubes 151, and the spray structure 111 extends into the installation interval. Cooling water or antifreeze enters the water outlet section 110 from the water inlet section 100, and then is sprayed onto the heat exchange tubes 151 by the spray structure 111. In this way, compared with spraying the outer surface of the heat exchanger 150, spraying the heat exchange tubes 151 from the installation interval can better allow the cooling water or antifreeze to contact the inner surface of the heat exchange tubes 151, thereby achieving a better cooling effect or antifreeze effect. Furthermore, the spray structure 111 can be installed at the heat exchange tubes 151 with poor heat exchange, thereby effectively cooling; or, the spray structure 111 can be installed at the heat exchange tubes 151 that are prone to frost, thereby effectively preventing freezing.

[0052] Optionally, a group of spray structures 111 is disposed between every two adjacent rows of heat exchange tubes 151, which is beneficial to comprehensively improving the cooling effect and antifreeze effect.

[0053] For example, Figure 2 As shown, the heat exchanger 150 has two rows of heat exchange tubes 151 , and a water outlet section 110 is provided, and a group of spray structures 111 on the water outlet section 110 extends between the two rows of heat exchange tubes 151 .

[0054] Another exemplary example is, Figure 3 As shown, the heat exchanger 150 has three rows of heat exchange tubes 151, so two installation intervals are formed in total. At this time, two water outlet sections 110 are provided, and a group of spray structures 111 on each water outlet section 110 extends into one installation interval.

[0055] In another exemplary embodiment, the heat exchanger 150 has four rows of heat exchange tubes 151, so a total of three installation intervals are formed. In this case, three water outlet sections 110 are provided, and a group of spray structures 111 on each water outlet section 110 extends into one installation interval.

[0056] Optionally, the water inlet section 100 is provided with a flow regulating valve 120 , and the flow regulating valve 120 is used to adjust the flow of the spray structure 111 .

[0057] In this embodiment, the flow regulating valve 120 can accurately control the flow entering the spray structure 111. The valve opening is adjusted according to actual needs to control the flow of the fluid to meet various heat exchange conditions of the heat exchanger 150. In addition, by adjusting the flow, the flow stability of the spray structure 111 can be maintained. Stable flow can ensure the uniformity of spraying cooling water and antifreeze, and avoid adverse effects of flow fluctuations on the spraying effect.

[0058] Exemplarily, the heat exchanger 150 has a first preset temperature and a second preset temperature, and the second preset temperature is greater than the first preset temperature. When the air conditioner is cooling and the temperature of the heat exchanger 150 is less than the first preset temperature, it means that the state of the heat exchanger 150 is normal, and the flow regulating valve 120 is closed at this time. When the temperature of the heat exchanger 150 is greater than or equal to the first preset temperature and less than or equal to the second preset temperature, it means that the heat exchange performance of the heat exchanger 150 is reduced. At this time, the flow regulating valve 120 is opened with a first opening, and the spray structure 111 is used to spray cooling water to the inner surface of the heat exchange tube 151. When the temperature of the heat exchanger 150 is greater than the second preset temperature, it means that the heat exchange performance of the heat exchanger 150 is seriously reduced. At this time, the flow regulating valve 120 is opened with a second opening, and a large amount of cooling water is sprayed to the heat exchange tube 151. Here, the second opening is greater than the first opening.

[0059] In another exemplary embodiment, the heat exchanger 150 has a frosting temperature. When the air conditioner is heating, and the temperature of the heat exchanger 150 is less than or equal to the frosting temperature, it means that the heat exchanger 150 is very likely to be frosted. At this time, the flow control valve 120 is opened, and the spray structure 111 is used to spray antifreeze liquid to the heat exchange tube 151, thereby effectively preventing the heat exchanger from frosting.

[0060] Optionally, the water inlet section 100 is provided with a pressure sensor 130, and the pressure sensor 130 is used to detect the water pressure in the cooling tube group.

[0061] In this embodiment, by real-time monitoring of water pressure, it is helpful to timely discover potential faults or abnormal conditions, such as blockage or leakage of the cooling pipe group. Once abnormal pressure is detected, the cooling device can automatically shut down or sound an alarm to avoid equipment damage or safety accidents. In addition, by real-time monitoring of water pressure, it is helpful for operators to timely understand the operating status of the cooling device and make corresponding adjustments according to pressure changes.

[0062] For example, when the temperature of the heat exchanger 150 is lower than the first preset temperature, it indicates that the state of the heat exchanger 150 is normal, and the flow regulating valve 120 is closed. If the pressure sensor 130 detects that there is still water flowing through the water supply pipe group, the flow regulating valve 120 may be faulty and open, and an alarm is issued to the user through the control system.

[0063] In another example, when the temperature of the heat exchanger 150 is greater than the second preset temperature, it means that the heat exchange performance of the heat exchanger 150 is seriously reduced. At this time, the flow control valve 120 is opened at the second opening, so that a large amount of cooling water is sprayed to the heat exchange tube 151. Assuming that the water pressure in the water supply pipe group is insufficient through the pressure sensor 130, there may be a leak in the cooling pipe group, and an alarm is issued to the user through the control system.

[0064] Optionally, the water inlet section 100 is provided with a filter 140 , and the filter 140 is used to filter the cooling water entering the spray structure 111 .

[0065] In this embodiment, the filter 140 can effectively remove impurities, particulate matter or suspended matter in the cooling water to ensure the purity of the water entering the spray structure 111. This is conducive to preventing impurities from clogging the spray structure 111, extending the service life, and maintaining the stability of the spray effect. In addition, under the filtering effect of the filter 140, the risk of scaling inside the spray structure 111 and on the surface of the heat exchange tube 151 can be reduced. Scaling not only affects the spray effect, but also may reduce the heat exchange efficiency, increase energy consumption and operating costs.

[0066] Optionally, there are many types of filters 140, and a PP filter element filter or an activated carbon filter can be selected. Among them, the PP filter element filter is a water purification device that uses a PP filter element as the main filter element. The PP filter element, also known as a polypropylene filter element, is made of polypropylene material and is an efficient and environmentally friendly filter medium. The activated carbon filter is a water purification device that uses the adsorption effect of activated carbon to remove impurities and harmful substances in the water. Activated carbon is a porous carbon material made from raw materials such as coal, wood, and fruit shells through processes such as carbonization and activation, and has a large specific surface area and adsorption capacity.

[0067] Optionally, the lower side of the water outlet section 110 is provided with a plurality of water outlet holes, and the spray structure 111 includes a capillary tube or a capillary plate. The upper end of the capillary tube or the capillary plate is connected to the water outlet hole, and the lower end thereof extends between the rows of heat exchange tubes 151 .

[0068] In this embodiment, the capillary tube is a slender tubular structure, and its pipe serves as a water spray channel. The capillary plate is a plate-like structure made of a porous material, and its internal micro-channels serve as water spray channels. Both the capillary tube and the capillary plate can be extended and installed between adjacent rows of heat exchange tubes 151, and the cooling water in the water outlet section 110 is sprayed onto the heat exchange tubes 151.

[0069] Optionally, the extended shape of the water outlet section 110 is adapted to the shape of the heat exchanger 150. In this way, the water outlet section 110 and the spray structure 111 are easily installed.

[0070] Exemplarily, the overall shape of the heat exchanger 150 is constructed in an L shape, and the installation intervals between adjacent rows of heat exchange tubes 151 are L-shaped. At this time, the water outlet section 110 extends along the L shape to facilitate horizontal installation above the heat exchanger 150 and facilitate extending the spray structure 111 into the installation interval.

[0071] In another exemplary embodiment, the overall shape of the heat exchanger 150 is configured as a U-shape, and the installation intervals between adjacent rows of heat exchange tubes 151 are U-shaped. At this time, the water outlet section 110 extends along the U-shape to facilitate horizontal installation above the heat exchanger 150 and facilitate extending the spray structure 111 into the installation interval.

[0072] Alternatively, if Figure 4 As shown, the length L1 of the capillary tube is less than or equal to 3000 mm. Thus, by limiting the length of the capillary tube, it is advantageous to install the capillary tube into the installation interval between adjacent rows of heat exchange tubes 151, and a better spraying effect can be achieved.

[0073] Illustratively, the length L1 of the capillary can be selected to be 1 mm, 10 mm, 50 mm, 200 mm, 400 mm, 500 mm, 800 mm, 1000 mm, 1500 mm, 1800 mm, 2000 mm, 2500 mm, 2700 mm or 3000 mm.

[0074] Alternatively, if Figure 4 As shown, the length L1 of the capillary plate is less than or equal to 3000 mm. Thus, by limiting the length of the capillary plate, it is advantageous to install the capillary plate into the installation interval between adjacent rows of heat exchange tubes 151, and a better spraying effect can be achieved.

[0075] Exemplarily, the length L1 of the capillary plate may be selected to be 1 mm, 20 mm, 100 mm, 300 mm, 400 mm, 600 mm, 700 mm, 1000 mm, 1400 mm, 1600 mm, 2000 mm, 2200 mm, 2800 mm or 3000 mm.

[0076] Alternatively, if Figure 5 As shown, the interval L2 between adjacent capillaries ranges from 10 mm to 3000 mm. Thus, by limiting the interval between adjacent capillaries, it is advantageous to spray the surface of the heat exchanger 150 relatively evenly, thereby improving the cooling effect.

[0077] Exemplarily, the interval L2 between adjacent capillaries may be selected to be 10 mm, 50 mm, 200 mm, 400 mm, 500 mm, 800 mm, 1000 mm, 1500 mm, 1800 mm, 2000 mm, 2500 mm, 2700 mm or 3000 mm.

[0078] Alternatively, if Figure 5 As shown, the interval L2 between adjacent capillary plates ranges from 10 mm to 3000 mm. Thus, by limiting the interval between adjacent capillary plates, it is advantageous to spray the surface of the heat exchanger 150 relatively evenly, thereby improving the cooling effect.

[0079] Exemplarily, the interval L2 between adjacent capillary plates may be selected to be 10 mm, 20 mm, 100 mm, 300 mm, 400 mm, 600 mm, 700 mm, 1000 mm, 1400 mm, 1600 mm, 2000 mm, 2200 mm, 2800 mm or 3000 mm.

[0080] Optionally, the inner diameter of the capillary tube ranges from 0.1 mm to 6.5 mm. Thus, by limiting the inner diameter of the capillary tube, it is advantageous to install the capillary tube into the installation interval between adjacent rows of heat exchange tubes 151, and a better spraying effect can be achieved.

[0081] Exemplarily, the inner diameter of the capillary tube can be selected to be 0.1 mm, 0.5 mm, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6.35 mm or 6.5 mm.

[0082] Optionally, the outer diameter of the capillary tube is in the range of 0.2 mm to 7.5 mm. Thus, by limiting the outer diameter of the capillary tube, it is advantageous to install the capillary tube into the installation interval between adjacent rows of heat exchange tubes 151, and a better spraying effect can be achieved.

[0083] Exemplarily, the outer diameter of the capillary can be selected to be 0.2 mm, 0.8 mm, 1.2 mm, 1.7 mm, 2 mm, 2.6 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6.35 mm, 6.5 mm, 7 mm or 7.5 mm.

[0084] Optionally, the width of the capillary plate is in the range of 13 mm to 20 mm. Thus, by limiting the width of the capillary plate, it is advantageous to install the capillary plate into the installation interval between adjacent rows of heat exchange tubes 151, and a better spraying effect can be achieved.

[0085] Exemplarily, the width of the capillary plate may be selected to be 13 mm, 13.5 mm, 14 mm, 14.5 mm, 15 mm, 15.5 mm, 16 mm, 16.5 mm, 17 mm, 17.5 mm, 18 mm, 18.5 mm, 19 mm, 19.5 mm or 20 mm.

[0086] An embodiment of the present disclosure further provides an air conditioner, comprising the cooling device for a heat exchanger described in any of the above embodiments.

[0087] In this embodiment, the air conditioner includes an indoor heat exchanger and an outdoor heat exchanger. The cooling efficiency of the outdoor heat exchanger directly affects the cooling capacity of the air conditioner. If the cooling effect of the outdoor heat exchanger is not good, the cooling capacity of the air conditioner will be limited, resulting in the indoor temperature not being able to drop quickly or not being able to reach the set cooling temperature. The antifreeze function of the outdoor heat exchanger directly affects the heating capacity of the air conditioner. If the antifreeze effect of the outdoor heat exchanger is not good, the heating capacity of the air conditioner will be limited, resulting in the indoor temperature not being able to rise quickly or not being able to reach the set heating temperature.

[0088] In this embodiment, the cooling device for the heat exchanger is installed in the outdoor heat exchanger. The outdoor heat exchanger has multiple rows of heat exchange tubes 151, and there is an installation interval between adjacent rows of heat exchange tubes 151, and the spray structure 111 extends into the installation interval. Cooling water or antifreeze enters the water outlet section 110 from the water inlet section 100, and then is sprayed onto the heat exchange tubes 151 by the spray structure 111. In this way, compared with spraying the outer surface of the heat exchanger 150, spraying the heat exchange tubes 151 from the installation interval can better make the cooling water or antifreeze contact the inner surface of the heat exchange tubes 151, thereby achieving better cooling and antifreeze effects. In this way, the internal installation does not affect the appearance of the air conditioner, and effectively improves the performance of the air conditioner, thereby achieving the purpose of improving high-temperature cooling and low-temperature heating performance.

[0089] Optionally, a water receiving pan is provided below the heat exchanger 150, and the water inlet section 100 is connected to the water receiving pan so that the condensed water can be used as cooling water.

[0090] In this embodiment, a water pump is provided at the water inlet section 100, and the water inlet end of the water pump is connected to the water receiving pan through the first branch pipe. Condensed water is generated during the operation of the air conditioner and is usually at a low temperature. The condensed water is collected by the water receiving pan and supplied to the spray structure 111 as cooling water, so that the condensed water can be efficiently utilized and the energy efficiency of the entire air conditioning system can be improved.

[0091] Optionally, the water inlet end of the water pump is connected to the antifreeze liquid through a second branch pipe.

[0092] In this embodiment, the first branch pipe is provided with a first solenoid valve, and the second branch pipe is provided with a second solenoid valve. Thus, cooling water or antifreeze can be supplied to the spray structure 111 by controlling the switch states of the first solenoid valve and the second solenoid valve according to the operating conditions of the air conditioner.

[0093] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless explicitly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A cooling device for a heat exchanger, characterized in that: include: A cooling tube group is arranged in a shell of a heat exchanger (150), comprising a water inlet section (100) and a water outlet section (110) which are adjacently connected; The water inlet section (100) is connected to cooling water and antifreeze so that cooling water or antifreeze is supplied from the water inlet section (100) to the water outlet section (110); the water outlet section (110) is located above the heat exchanger (150), and the water outlet section (110) is provided with a plurality of spray structures (111); the spray structures (111) extend downwardly between the plurality of rows of heat exchange tubes (151) of the heat exchanger (150) to spray cooling water or antifreeze.

2. The cooling device for heat exchanger according to claim 1, characterized in that: The water inlet section (100) is provided with a flow regulating valve (120), and the flow regulating valve (120) is used to regulate the flow of the spray structure (111).

3. The cooling device for heat exchanger according to claim 1, characterized in that: The water inlet section (100) is provided with a pressure sensor (130), and the pressure sensor (130) is used to detect the water pressure in the cooling pipe group.

4. The cooling device for a heat exchanger according to claim 1, characterized in that: The water inlet section (100) is provided with a filter (140), and the filter (140) is used to filter the cooling water entering the spray structure (111).

5. The cooling device for a heat exchanger according to any one of claims 1 to 4, characterized in that: The lower side of the water outlet section (110) is provided with a plurality of water outlet holes, and the spray structure (111) comprises: The capillary tube or capillary plate has an upper end connected to the water outlet and a lower end extending between the multiple rows of heat exchange tubes (151).

6. The cooling device for a heat exchanger according to claim 5, characterized in that: The length of the capillary tube or capillary plate is less than or equal to 3000 mm; and / or, The distance between adjacent capillaries or capillary plates ranges from 10 mm to 3000 mm.

7. The cooling device for a heat exchanger according to claim 5, characterized in that: When the spray structure (111) includes a capillary tube, the inner diameter of the capillary tube is in the range of 0.1 mm to 6.5 mm, and the outer diameter of the capillary tube is in the range of 0.2 mm to 7.5 mm.

8. The cooling device for a heat exchanger according to claim 5, characterized in that: In the case where the spray structure (111) comprises a capillary plate, the width of the capillary plate is in the range of 13 mm to 20 mm.

9. An air conditioner, characterized in that: The cooling device for a heat exchanger comprises the cooling device for a heat exchanger according to any one of claims 1 to 8.

10. The air conditioner according to claim 9, characterized in that: A water receiving pan is provided below the heat exchanger (150), and the water inlet section (100) is connected to the water receiving pan so that condensed water can be used as cooling water.

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