WO2023142980A1

WO2023142980A1 - Indirect evaporative cooling device having function of heat recovery, and heat recovery method

Info

Publication number: WO2023142980A1
Application number: PCT/CN2023/071095
Authority: WO
Inventors: 颜利波; 苏林; 丁云霄
Original assignee: 广东美的暖通设备有限公司; 美的集团股份有限公司
Priority date: 2022-01-25
Filing date: 2023-01-06
Publication date: 2023-08-03
Also published as: CN114440355A

Abstract

The present disclosure relates to the technical field of air conditioners. Provided in some embodiments of the present disclosure are an indirect evaporative cooling device having a function of heat recovery, and a heat recovery method. The device comprises a compressor, wherein an outlet end of the compressor is connected to a first port of a four-way valve; a second port of the four-way valve comprises two branches, a first branch being connected to an air exhaust heat exchanger, the air exhaust heat exchanger being connected to a fourth port of the four-way valve, a second branch being connected to an air supply heat exchanger, and the air supply heat exchanger being connected to an inlet end of the compressor; a third port of the four-way valve is connected to the inlet end of the compressor; the opening and closing states of the first port, the second port, the third port and the fourth port of the four-way valve can be respectively adjusted to enable the device to operate in different heat recovery modes; and a heat recovery assembly is provided on a pipeline between the compressor and the first port, and is used for recovering waste heat of a refrigerant outputted from the compressor in different heat recovery modes. By means of the device and the method of some embodiments of the present disclosure, waste heat can not only be recovered, but the structure is also simple, the space occupation is small, and the apparatus cost is low, such that the problems of a complex structure, large space occupation, and high apparatus cost in the related art are solved.

Description

Heat recovery indirect evaporative cooling device and heat recovery method

Cross References to Related Applications

This disclosure claims the priority of the Chinese patent application with the application number 202210088769.8 and titled "A Heat Recovery Indirect Evaporative Cooling Device and Heat Recovery Method" submitted to the State Intellectual Property Office of China on January 25, 2022, the entire content of which is passed References are incorporated in this disclosure.

technical field

The present disclosure relates to the technical field of air conditioning, in particular, to a heat recovery indirect evaporative cooling device and a heat recovery method.

Background technique

The data center has cooling demand throughout the year, and the heat load is large, and the waste heat resource is very abundant. Indirect evaporative cooling is widely used in the industry to achieve energy-efficient cooling of data centers by utilizing dry air energy for cooling. However, at present, most of the indirect evaporative cooling devices in data centers in the industry do not have the waste heat recovery function, and a few solutions with the waste heat recovery function need to add a whole set of heat pump systems, which makes the structure of the indirect evaporative cooling and waste heat recovery composite device complex and takes up a lot of space. Problems such as high equipment cost.

Contents of the invention

The purpose of some embodiments of the present disclosure is to provide a heat recovery indirect evaporative cooling device and a heat recovery method, which can not only realize waste heat recovery, but also have a simple structure, small space occupation, and low equipment cost, which solves the problems of complex structures and space constraints in related technologies. The problem of large occupation and high equipment cost.

Some embodiments of the present disclosure provide a heat recovery indirect evaporative cooling device, the device includes an exhaust air heat exchanger, a supply air heat exchanger, a compressor, and a heat recovery component, wherein:

The outlet end of the compressor is connected to the first port of the four-way valve, the second port of the four-way valve includes a first branch and a second branch, and the first branch is connected to the exhaust air heat exchanger , the exhaust air heat exchanger is connected to the fourth end of the four-way valve; the second branch is connected to the air supply heat exchanger, and the air supply heat exchanger is connected to the inlet end of the compressor; The third port of the four-way valve is connected to the inlet port of the compressor;

Wherein, the opening and closing states of the first port, the second port, the third port and the fourth port of the four-way valve can be adjusted so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes;

The heat recovery component is arranged on the pipeline between the compressor and the first port, and is used for recovering waste heat of the refrigerant output from the compressor in the different heat recovery modes.

In the above implementation process, by adjusting the opening state of the four ports of the four-way valve and switching between different working modes, a better waste heat recovery effect is achieved, and the structure is simpler, the space occupation is small, the equipment cost is low, and the waste heat temperature control is better. Accurate, under the premise of meeting the air supply temperature and cooling capacity requirements of the data room, fully recover the waste heat discharged from the data room as much as possible, and at the same time, it can automatically adjust the heat recovery mode according to the demand to achieve high-efficiency and energy-saving operation.

In some optional embodiments, the heat recovery component includes: a heat recovery heat exchanger connected to the outlet end of the compressor; an energy storage component connected to the heat recovery heat exchanger for The refrigerant in the heat recovery heat exchanger performs heat exchange and stores the heat of the refrigerant.

In the above implementation process, the energy storage component exchanges heat with the refrigerant through the heat recovery heat exchanger and stores the acquired heat.

In some optional embodiments, the energy storage assembly includes: a water storage tank and a second water pump, the outlet end of the water storage tank is connected to the inlet end of the heat recovery heat exchanger through a pipeline, and the heat recovery heat exchanger The outlet end of the water storage tank is connected to the inlet end of the water storage tank through the second water pump, so that the water in the water storage tank absorbs the heat of the refrigerant passing through the heat recovery heat exchanger.

In the above implementation process, the purpose of waste heat recovery is achieved through heat exchange between the water in the water storage tank and the refrigerant and heat storage.

In some optional embodiments, the heat recovery assembly further includes: a regulating solenoid valve, the first end of which is connected to the outlet end of the heat recovery heat exchanger, and the second end thereof is connected to the outlet end of the water storage tank. connection for regulating the flow of water through the heat recovery heat exchanger.

In the above implementation process, the regulating solenoid valve is used to regulate the water flow through the heat recovery heat exchanger, so as to realize the precise control of waste heat recovery and water temperature.

In some optional embodiments, the heat recovery mode includes a high load partial heat recovery mode, when the heat recovery indirect evaporative cooling device operates in the high load partial heat recovery mode:

The first port communicates with the fourth port, and the second port and the third port are closed.

In the above implementation process, the first port is communicated with the fourth port, so that the device operates in the mode of condenser + evaporator, and realizes the heat recovery of the high-load part.

In some optional embodiments, the heat recovery mode includes a low load high heat recovery mode, when the heat recovery indirect evaporative cooling device operates in the low load high heat recovery mode:

The first port communicates with the second port, and the fourth port communicates with the third port.

In the above implementation process, the first port is connected with the second port, and the fourth port is connected with the third port, so that the device operates in the mode of double evaporators to realize low load and high heat recovery.

In some optional embodiments, the heat recovery mode includes a high-load high-heat recovery mode, and when the heat recovery indirect evaporative cooling device operates in the high-load high-heat recovery mode:

The first port communicates with the second port, and the fourth port communicates with the third port;

The first throttle element is opened and the second throttle element is closed, or the first throttle element is closed and the second throttle element is opened.

In the above implementation process, only one of the first throttling element and the second throttling element is turned on, so that the device operates in a single evaporator mode to achieve high load and high heat recovery.

In some optional embodiments, the device further includes: an evaporative cooling component, configured to adjust the temperature of the indoor return air.

In the above implementation process, the indoor return air temperature is adjusted by using the evaporative cooling component.

In some optional embodiments, the device further includes: a controller, which is connected to the four-way valve and used to control the opening and closing states of the four ports of the four-way valve and the communication state between the ports, so as to Make the unit operate in a different heat recovery mode.

In the above implementation process, according to different load requirements, the controller adjusts the opening and closing states of the four ports of the four-way valve and the connection state between the ports to realize the switching of different heat recovery modes.

Some embodiments of the present disclosure also provide a heat recovery indirect evaporative cooling device, the device includes an exhaust air heat exchanger, an air supply heat exchanger, a compressor, a first solenoid valve, a second solenoid valve, and a first throttling element . The second throttling element and the heat recovery assembly, wherein: a first electromagnetic valve, the first end of the first electromagnetic valve is connected to the exhaust air heat exchanger, and the second end of the first electromagnetic valve is connected to the The outlet end of the compressor is connected; the second electromagnetic valve, the first end of the second electromagnetic valve is connected with the exhaust heat exchanger, and the second end of the second electromagnetic valve is connected with the inlet of the compressor End connection; the pipeline extending from the second end of the first solenoid valve also includes a first branch to the exhaust air heat exchanger and a second branch to the supply air heat exchanger , the first throttling element is arranged on the first branch, and the second throttling element is arranged on the second branch; the heat recovery component is arranged on the outlet end of the compressor and the first branch The pipeline between the second ends of a solenoid valve is used to recover the waste heat of the refrigerant output from the compressor; wherein, the opening and closing states of the first solenoid valve and the second solenoid valve can be adjusted so that The heat recovery indirect evaporative cooling units operate in different heat recovery modes.

The device according to some embodiments of the present disclosure can also realize switching between different heat recovery modes by adjusting the opening and closing states of the first solenoid valve and the second solenoid valve.

In some optional embodiments, the heat recovery indirect evaporative cooling device further includes a controller, the controller is connected to the first solenoid valve and the second solenoid valve, and the controller controls the The opening and closing states of the first solenoid valve and the second solenoid valve are controlled so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.

Some embodiments of the present disclosure also provide a heat recovery method, which is applied to the controller of the above-mentioned heat recovery indirect evaporative cooling device, and the method includes: determining the load demand according to the temperature difference between the return water and the outlet water of the compressor;

Based on the load demand, the opening and closing states of the ports of the four-way valve are adjusted, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.

Based on the load demand, the opening and closing states of the first solenoid valve and the second solenoid valve are adjusted respectively, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.

In the above implementation process, the switching of each heat recovery mode is performed according to the load demand of the heat recovery system. For example, it can be controlled according to the temperature difference between the return water and the outlet water. When the temperature difference between the inlet and outlet water is greater, the load is also greater.

Some embodiments of the present disclosure further provide a readable storage medium, wherein computer program instructions are stored in the readable storage medium, and when the computer program instructions are read and executed by a processor, the above heat recovery method is executed.

Some embodiments of the present disclosure also provide an electronic device, the electronic device includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program to enable the electronic device to perform the above-mentioned heating Recycling method.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings that are used in the embodiments of the present disclosure will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, so It should not be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings according to these drawings without creative work.

Fig. 1 is a schematic structural diagram of a heat recovery indirect evaporative cooling device provided in some embodiments of the present disclosure;

Fig. 2 is a structural schematic diagram of the heat recovery of the high-load part provided in some embodiments of the present disclosure;

Fig. 3 is a schematic diagram of low-load high-heat recovery provided in some embodiments of the present disclosure;

Fig. 4 is a schematic diagram of high load and high heat recovery provided in some embodiments of the present disclosure;

Fig. 5 is a schematic structural diagram of another heat recovery indirect evaporative cooling device provided in some embodiments of the present disclosure;

FIG. 6 is a flowchart of a heat recovery method provided in some embodiments of the present disclosure.

icon:

11-exhaust air heat exchanger; 12-first throttling element; 13-second throttling element; 14-four-way valve; 15-air supply heat exchanger; 16-compressor; 17-heat recovery heat exchanger ;18-water storage tank; 19-second water pump; 20-first water pump; 21-heat exchange core; 22-spray outlet; 23-water tray; 24-spray water pipe; - first port; 27 - second port; 28 - third port; 29 - fourth port; 30 - regulating solenoid valve; 31 - first solenoid valve; 32 - second solenoid valve.

Detailed ways

The technical solutions in the embodiments of the present disclosure will be described below with reference to the drawings in the embodiments of the present disclosure.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present disclosure, the terms "first", "second", etc. are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a heat recovery indirect evaporative cooling device provided by some embodiments of the present disclosure. As shown in the figure, the device may include an exhaust air heat exchanger 11, a supply air heat exchanger 15, a four-way valve 14, a compressor 16 and a heat recovery assembly.

In some embodiments of the present disclosure, the first port 26 of the four-way valve 14 may be connected to the outlet port of the compressor 16 . The second port 27 of the four-way valve 14 can include a first branch and a second branch, that is, the pipeline extending from the second port 27 of the four-way valve 14 can be divided into a first branch and a second branch, And wherein, the first branch can be connected to the exhaust air heat exchanger 11 , and the second branch can be connected to the air supply heat exchanger 15 . The third port 28 of the four-way valve 14 may be connected to the inlet port of the compressor 16 . The fourth port 29 of the four-way valve 14 can be connected with the exhaust air heat exchanger 11 . The air supply heat exchanger 15 may be connected to an inlet port of a compressor 16 .

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure can recover heat with different mode operation.

In some optional embodiments, the heat recovery component may be arranged on the pipeline connecting the compressor 16 and the first port 26 for recovering waste heat from the refrigerant output from the compressor 16 .

In some optional embodiments, the heat recovery component may include: a heat recovery heat exchanger 17, which may be connected to the outlet end of the compressor 16; an energy storage component, which may be connected to the heat recovery heat exchanger 17, for It exchanges heat with the refrigerant passing through the heat recovery heat exchanger 17, and stores the heat of the refrigerant.

In some optional embodiments, the energy storage assembly may include a water storage tank 18 and a second water pump 19 . The outlet end of the water storage tank 18 can be connected with the inlet end of the heat recovery heat exchanger 17 through a pipe. The outlet port of the heat recovery heat exchanger 17 can be connected with the inlet port of the water storage tank 18 through the second water pump 19 , so that the water in the water storage tank 18 absorbs the heat of the refrigerant passing through the heat recovery heat exchanger 17 .

In some optional embodiments, the pipeline extending from the second port 27 includes a trunk, and the trunk connects the second port 27 with the above-mentioned first branch and the second branch. A one-way valve 25 is also provided on the above-mentioned main road of the second port 27, so that the one-way communication from the second port 27 to the first and second branches is performed.

In some optional embodiments, the device may further include an evaporative cooling component for adjusting the temperature of the indoor return air. The evaporative cooling assembly may include, for example, a first water pump 20 , a heat exchange core 21 , a spray port 22 , a spray water pipe 24 and a water receiving tray 23 . The heat exchange core 21 can be composed of two sets of flow channels, the cold fluid flows through one of the two sets of flow channels of the heat exchange core 21, and the hot fluid flows through the other set of the two sets of flow channels of the heat exchange core 21 The flow channels, and the cold and hot fluids flowing through the two sets of flow channels exchange heat. When the evaporative cooling module is working, outdoor fresh air with low outdoor temperature or humidity enters one of the two sets of flow channels of the heat exchange core 21, and the indoor return air enters the other set of two sets of flow channels of the heat exchange core 21. road. The first water pump 20 draws water from the water receiving tray 23 and delivers it to the spray port 22 through the spray water pipe 24. The water is evenly sprayed from the spray port 22 to the inside of the heat exchange core 21 and evaporates in the flow channel of the outdoor fresh air. Exchange heat with the indoor return air to improve the cooling effect on the indoor return air.

Please refer to FIG. 2 . FIG. 2 is a schematic structural diagram of a heat recovery indirect evaporative cooling device operating in a high-load partial heat recovery mode according to some embodiments of the present disclosure. As shown in FIG. 2 , in this mode, the first port 26 of the four-way valve 14 communicates with the fourth port 29 , and the second port 27 and the third port 28 of the four-way valve 14 are closed. For example, the purpose of closing the second port 27 and the third port 28 can be achieved by using the one-way conduction effect of the one-way valve 25 .

In this mode, the exhaust air heat exchanger 11 acts as a condenser, and the air supply heat exchanger 15 acts as an evaporator, realizing the working mode of hot water + condenser + evaporator. The specific working process is as follows:

Due to the need for a large amount of cooling, the refrigerant discharged from the outlet of the compressor 16 enters the exhaust air exchange through the first port 26 and the fourth port 29 after passing through the heat recovery heat exchanger 17 and the water in the water storage tank 18 after heat exchange. Heater 11 condenses, and after condensation, enters air supply heat exchanger 15 for further condensation and returns to compressor 16 again.

In some optional embodiments, the heat recovery assembly may further include a regulating solenoid valve 30 . The first end of the regulating solenoid valve 30 is connected to the outlet end of the heat recovery heat exchanger 17, and the second end of the regulating solenoid valve 30 is connected to the outlet end of the water storage tank 18 for adjusting the water flow through the heat recovery heat exchanger 17 .

During the waste heat recovery process, the opening degree and opening and closing state of the regulating solenoid valve 30 can be adjusted to realize the fine adjustment of the water flow passing through the heat recovery heat exchanger 17 , so as to achieve the purpose of accurately adjusting the water temperature.

Please refer to FIG. 3 . FIG. 3 is a schematic structural diagram of a heat recovery indirect evaporative cooling device operating in a low-load high heat recovery mode according to some embodiments of the present disclosure. As shown in FIG. 3 , in this mode, the first port 26 of the four-way valve 14 communicates with the second port 27 , and the fourth port 29 of the four-way valve 14 communicates with the third port 28 .

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure realizes the working mode of hot water + double evaporators in this mode, specifically:

Since there is no need for a large amount of cooling capacity, the refrigerant discharged from the outlet of the compressor 16 passes through the heat recovery heat exchanger 17 and the water in the water storage tank 18 after heat exchange, and then passes through the first branch and the second branch respectively and enters into the The exhaust air heat exchanger 11 and the air supply heat exchanger 15 condense respectively, and then return to the inlet end of the compressor 16 .

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of a heat recovery indirect evaporative cooling device operating in a high load and high heat recovery mode according to some embodiments of the present disclosure. As shown in Figure 4, in this mode, the first throttling element 12 is set on the first branch, and the second throttling element 13 is set on the second branch; the first port 26 communicates with the second port 27, and the fourth The port 29 communicates with the third port 28; the first throttle element 12 is opened and the second throttle element 13 is closed, or the first throttle element 12 is closed and the second throttle element 13 is opened.

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure realizes the working mode of hot water + single evaporator in this mode, specifically:

After the refrigerant discharged from the outlet of the compressor 16 passes through the heat recovery heat exchanger 17 and the water in the storage tank 18 for heat exchange, after passing through the first port 26 and the second port 27 of the four-way valve 14, if the first section When the flow element 12 is opened and the second throttling element 13 is closed, it will enter the exhaust air heat exchanger 11 through the first branch to condense, and then return to the inlet port of the compressor 16 through the fourth port 29 and the third port 28; if When the first throttle valve is closed and the second throttle valve is opened, it enters the air supply heat exchanger 15 through the second branch for condensation, and then returns to the inlet port of the compressor 16 .

During this process, the exhaust air heat exchanger 11 or the air supply heat exchanger 15 can be used as an evaporator to condense the refrigerant.

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure may also include a controller. The controller can be connected with the four-way valve 14 for controlling the communication states of the four ports of the four-way valve 14, so that the device operates in different heat recovery modes.

Specifically, the switching of each heat recovery mode needs to be performed according to the load demand of the heat recovery system. For example, it can be controlled according to the temperature difference between the return water and the outlet water. When the temperature difference between the inlet and outlet water is larger, the load is also larger, so the mode can be adjusted according to the load demand.

Through the adjustment of the controller to the four-way valve 14, the switching of the exhaust air heat exchanger 11 as a condenser or an evaporator is realized, thereby better matching the demand of the heat recovery load.

Please refer to FIG. 5 , which is a schematic structural diagram of another heat recovery indirect evaporative cooling device provided by some embodiments of the present disclosure. The difference from the device shown in FIG. 1 is that the device shown in FIG. 5 uses two solenoid valves, namely the first solenoid valve 31 and the second solenoid valve 32, to replace the four-way valve 14 to realize the exhaust air heat exchanger 11. Mode switching function. It should be noted that, for the sake of brevity in description, only the differences between the device shown in FIG. 5 and the device shown in FIG. This will not be repeated here.

As shown in FIG. 5 , in this device, the first end of the first solenoid valve 31 can be connected to the exhaust air heat exchanger 11 , and the second end can be connected to the outlet end of the compressor 16 . The first end of the second electromagnetic valve 32 can be connected with the exhaust air heat exchanger 11, and similar to the second end of the first electromagnetic valve 31, the second end of the second electromagnetic valve 32 can also be connected with the inlet of the compressor 16. end connection. The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure can operate in different heat recovery modes by adjusting the opening and closing states of the first solenoid valve 31 and the second solenoid valve 32 respectively.

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure may also include a controller. The controller is electrically connected with the first solenoid valve 31 and the second solenoid valve 32 . The device can be operated in different heat recovery modes by separately controlling the opening and closing states of the first solenoid valve 31 and the second solenoid valve 32 .

The heat recovery indirect evaporative cooling device according to some embodiments of the present disclosure makes full use of the compressor 16, the exhaust air heat exchanger 11, the supply air heat exchanger 15, and the electronic expansion valve, and only adds a few additional components (such as the four-way valve 14 or the second 1. The

second solenoid valves

31 and 32, and the heat recovery heat exchanger 17, etc.) and adjusting a small amount of refrigerant pipelines can achieve a good waste heat recovery effect. The structure of the heat recovery indirect evaporative cooling device is simpler, the space occupation is small, the equipment cost is low, and the waste heat temperature control is more precise. Under the premise of meeting the air supply temperature and cooling capacity requirements of the data computer room, the waste heat discharged from the data computer room can be fully recovered as much as possible. , At the same time, it can automatically adjust the heat recovery mode according to the demand to achieve high-efficiency and energy-saving operation.

Some embodiments of the present disclosure also provide a heat recovery method, which is applied to a controller of a heat recovery indirect evaporative cooling device. Figure 6 shows a flow chart of the heat recovery method. As shown in Figure 6, the method may include: starting and ending

Step S100: Determine the load demand according to the temperature difference between the return water and the outlet water of the compressor 16;

Step S200: Based on the load demand, adjust the opening and closing states of the ports of the four-way valve 14 or the opening and closing states of the first and second solenoid valves, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes run.

The switching of each heat recovery mode can be carried out according to the load demand. For example, it can be controlled according to the temperature difference between the return water and the outlet water. When the temperature difference between the inlet and outlet water is greater, the load is also greater.

In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions and possible implementations of devices, methods and computer program products according to multiple embodiments of the present disclosure. operate. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or action , or may be implemented by a combination of dedicated hardware and computer instructions.

In addition, each functional module in each embodiment of the present disclosure may be integrated together to form an independent part, each module may exist independently, or two or more modules may be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present disclosure. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc., which can store program codes. .

The above descriptions are only examples of the present disclosure, and are not intended to limit the protection scope of the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The above is only a specific implementation of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope of the present disclosure. should fall within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be defined by the protection scope of the claims.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Industrial Applicability

Some embodiments of the present disclosure provide a heat recovery indirect evaporative cooling device, a heat recovery method, a readable storage medium, and an electronic device. The device includes an exhaust heat exchanger, a supply air heat exchanger, a compressor, a four-way valve, a first throttling element, a second throttling element and a heat recovery assembly; the outlet end of the compressor is connected to the four-way valve the first port of the four-way valve, the second port of the four-way valve includes a first branch and a second branch, the first branch is connected to the exhaust air heat exchanger through the first throttling element, the The exhaust air heat exchanger is connected to the fourth port of the four-way valve; the second branch is connected to the air supply heat exchanger through the second throttling element, and the air supply heat exchanger is connected to the compressor The inlet port of the compressor; the third port of the four-way valve is connected to the inlet port of the compressor; wherein, the opening and closing states of the first port, the second port, the third port and the fourth port of the four-way valve It can be adjusted so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes; a heat recovery component is arranged on the pipeline between the compressor and the first port, and is used to operate in the different heat recovery modes. In the heat recovery mode, waste heat recovery is performed on the refrigerant output from the compressor.

According to some embodiments of the present disclosure, the heat recovery indirect evaporative cooling device can switch between different working modes by adjusting the open state of the four ports of the four-way valve, so as to achieve a better waste heat recovery effect, and has a simpler structure, less space occupation, and less equipment. Low cost, more accurate waste heat temperature control, under the premise of meeting the air supply temperature and cooling capacity requirements of the data room, fully recover the waste heat discharged from the data room as much as possible, and can also automatically adjust the heat recovery mode according to the demand to achieve high-efficiency and energy-saving operation.

Some embodiments of the present disclosure also provide another heat recovery indirect evaporative cooling device, which replaces the four-way valve with two solenoid valves, and realizes different heat recovery modes by adjusting the opening and closing states of the two solenoid valves. switch.

Furthermore, it will be appreciated that the heat recovery indirect evaporative cooling apparatus of the present disclosure is reproducible and can be used in a variety of industrial applications. For example, the heat recovery indirect evaporative cooling device of the present disclosure may be used in air conditioning.

Claims

A heat recovery indirect evaporative cooling device, the device includes an exhaust air heat exchanger, a supply air heat exchanger, a compressor, a four-way valve, a first throttling element, a second throttling element, and a heat recovery assembly;

The outlet end of the compressor is connected to the first port of the four-way valve,

The second port of the four-way valve includes a first branch and a second branch, the first branch is connected to the exhaust air heat exchanger through the first throttling element, and the exhaust air heat exchanger connected to the fourth port of the four-way valve; the second branch is connected to the air supply heat exchanger through the second throttling element, and the air supply heat exchanger is connected to the inlet end of the compressor;

The third port of the four-way valve is connected to the inlet port of the compressor;

Wherein, the opening and closing states of the first port, the second port, the third port and the fourth port of the four-way valve can be adjusted so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes;

The heat recovery component is arranged on the pipeline between the compressor and the first port, and is used for recovering waste heat of the refrigerant output from the compressor in the different heat recovery modes.
The heat recovery indirect evaporative cooling device according to claim 1, wherein said heat recovery assembly comprises:

A heat recovery heat exchanger connected to the outlet end of the compressor;

The energy storage component is connected with the heat recovery heat exchanger, and is used for exchanging heat with the refrigerant passing through the heat recovery heat exchanger, and storing the heat of the refrigerant.
The heat recovery indirect evaporative cooling device according to claim 2, wherein the energy storage component comprises:

A water storage tank and a second water pump, the outlet end of the water storage tank is connected to the inlet end of the heat recovery heat exchanger through a pipeline, and the outlet end of the heat recovery heat exchanger is connected to the inlet end of the water storage tank through the second water pump , so that the water in the water storage tank absorbs the heat of the refrigerant passing through the heat recovery heat exchanger.
The heat recovery indirect evaporative cooling device according to claim 3, wherein the heat recovery component further comprises:

Regulate the solenoid valve, the first end of the regulating solenoid valve is connected to the outlet end of the heat recovery heat exchanger, the second end of the regulating solenoid valve is connected to the outlet end of the water storage tank, and is used to adjust the The water flow rate of the heat recovery heat exchanger described above.
The heat recovery indirect evaporative cooling device according to any one of claims 2-4, wherein the heat recovery mode comprises a high load part heat recovery mode, when the heat recovery indirect evaporative cooling device operates in the high load part When operating in heat recovery mode:

The first port of the four-way valve communicates with the fourth port, and the second port and the third port of the four-way valve are closed.
The heat recovery indirect evaporative cooling device according to any one of claims 2-5, wherein the heat recovery mode includes a low load high heat recovery mode, when the heat recovery indirect evaporative cooling device operates at the low load high heat recovery When the pattern runs:

The first port of the four-way valve communicates with the second port, and the fourth port of the four-way valve communicates with the third port.
The heat recovery indirect evaporative cooling device according to any one of claims 2-6, wherein the heat recovery mode includes a high load high heat recovery mode, when the heat recovery indirect evaporative cooling device operates at the high load high heat recovery When the pattern runs:

the first port of the four-way valve communicates with the second port, and the fourth port of the four-way valve communicates with the third port; and

The first throttle element is opened and the second throttle element is closed, or the first throttle element is closed and the second throttle element is opened.
The heat recovery indirect evaporative cooling device according to any one of claims 1-7, wherein the device further comprises:

The evaporative cooling component is used to adjust the temperature of the indoor return air.
The heat recovery indirect evaporative cooling device according to any one of claims 1-8, wherein the device further comprises:

A controller, the controller is connected with the four-way valve, and is used to control the opening and closing states of the four ports of the four-way valve and the communication state between the ports, so that the heat recovery indirect evaporative cooling device uses different Operation in heat recovery mode.
A heat recovery indirect evaporative cooling device, the device includes an exhaust air heat exchanger, an air supply heat exchanger, a compressor, a first solenoid valve, a second solenoid valve, a first throttling element, a second throttling element and Heat recovery components, where:

A first electromagnetic valve, the first end of the first electromagnetic valve is connected to the exhaust air heat exchanger, and the second end of the first electromagnetic valve is connected to the outlet end of the compressor;

A second electromagnetic valve, the first end of the second electromagnetic valve is connected to the exhaust heat exchanger, and the second end of the second electromagnetic valve is connected to the inlet end of the compressor;

The pipeline extending from the second end of the first solenoid valve also includes a first branch leading to the exhaust air heat exchanger and a second branch leading to the supply air heat exchanger, the the first throttling element is arranged on the first branch, and the second throttling element is arranged on the second branch;

A heat recovery component is arranged on the pipeline between the outlet end of the compressor and the second end of the first solenoid valve, and is used to recover waste heat from the refrigerant output from the compressor;

Wherein, the opening and closing states of the first electromagnetic valve and the second electromagnetic valve can be adjusted, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.
The heat recovery indirect evaporative cooling unit of claim 10, wherein said heat recovery assembly comprises:

A heat recovery heat exchanger connected to the outlet end of the compressor;

The energy storage component is connected with the heat recovery heat exchanger, and is used for exchanging heat with the refrigerant passing through the heat recovery heat exchanger, and storing the heat of the refrigerant.
The heat recovery indirect evaporative cooling device according to claim 10 or 11, wherein the heat recovery indirect evaporative cooling device further comprises a controller connected to the first solenoid valve and the second solenoid valve The controller respectively controls the opening and closing states of the first electromagnetic valve and the second electromagnetic valve, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.
A heat recovery method applied to the controller of the heat recovery indirect evaporative cooling device according to claim 9, said method comprising:

Determine the load demand according to the temperature difference between the return water and the outlet water of the compressor;

Based on the load demand, the opening and closing states of the ports of the four-way valve are adjusted, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.
A heat recovery method applied to the controller of the heat recovery indirect evaporative cooling device according to claim 12, said method comprising:

Determine the load demand according to the temperature difference between the return water and the outlet water of the compressor;

Based on the load demand, the opening and closing states of the first solenoid valve and the second solenoid valve are adjusted respectively, so that the heat recovery indirect evaporative cooling device operates in different heat recovery modes.
A readable storage medium, wherein computer program instructions are stored in the readable storage medium, and when the computer program instructions are read and executed by a processor, the heat recovery method described in claim 13 or 14 is executed.
An electronic device, the electronic device includes a memory and a processor, the memory is used to store a computer program, and the processor runs the computer program so that the electronic device performs the heat recovery described in claim 13 or 14 method.