Air conditioning system

Abstract

The utility model provides an air conditioning system which comprises a refrigerant circulating system and a secondary refrigerant circulating system. The refrigerant circulating system comprises a compressor, a condenser, a throttling device and a first heat exchanger which are connected in sequence, and the first heat exchanger is provided with a refrigerant channel and a secondary refrigerant channel; the secondary refrigerant circulating system comprises a first pipeline, a second pipeline, a second heat exchanger and a flow path control device; the first pipeline is used for communicating an outlet of the secondary refrigerant channel with a secondary refrigerant inlet of the target equipment; the second pipeline is used for communicating an inlet of the secondary refrigerant channel with a secondary refrigerant outlet of target equipment; the second heat exchanger and the secondary refrigerant channel are arranged in parallel; the flow path control device is configured to control connection and disconnection of the secondary refrigerant channel and the second heat exchanger. The air conditioning system not only has the operation mode of refrigeration only by the compressor, but also has the operation mode of refrigeration only by using the natural cold source, and / or the operation mode of refrigeration by simultaneously using the natural cold source and the compressor, so that energy can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning system. Background Art

[0002] An air-conditioning system includes a refrigerant circulation system and a coolant circulation system, which are used to cool a target device, ensure the stable operation of the target device, and extend the life of the target device. During operation, the refrigerant circulation system reduces the temperature of the coolant by circulating the refrigerant, and the coolant circulation system absorbs the heat generated by the target device during operation by circulating the coolant. However, the existing air-conditioning system has a single operating mode and can only use a compressor for cooling, and cannot use natural cold sources for cooling. When the ambient temperature is relatively low or the cooling capacity required by the target device is low, the compressor still needs to be turned on, resulting in energy waste. Utility Model Content

[0003] In view of the above problems, the present invention is proposed to provide a chiller that overcomes the above problems or at least partially solves the above problems, and can solve the technical problem of the single operation mode of the existing air-conditioning system to achieve the purpose of energy saving.

[0004] Specifically, the utility model provides an air conditioning system, comprising:

[0005] A refrigerant circulation system, the refrigerant circulation system comprising a compressor, a condenser, a throttling device and a first heat exchanger connected in sequence, wherein the first heat exchanger has a refrigerant channel and a brine channel;

[0006] A refrigerant circulation system, the refrigerant circulation system includes a first pipeline, a second pipeline, a second heat exchanger and a flow control device, the first pipeline is used to connect the outlet of the refrigerant channel and the refrigerant inlet of the target device; the second pipeline is used to connect the inlet of the refrigerant channel and the refrigerant outlet of the target device; the second heat exchanger is arranged in parallel with the refrigerant channel; the flow control device is configured to control the on and off of the refrigerant channel and the second heat exchanger.

[0007] Optionally, the coolant circulation system further includes:

[0008] A first fan is provided on one side of the second heat exchanger.

[0009] Optionally, the air conditioning system further includes:

[0010] A control device is configured to control the working state of the compressor and / or the refrigerant circulation system according to the ambient temperature and / or the refrigerant temperature.

[0011] Optionally, the air conditioning system includes:

[0012] a first operating mode, in which the control device is configured to control the compressor to be turned on, the brine channel to be connected, and the second heat exchanger to be disconnected;

[0013] A second operating mode: in the second operating mode, the control device is configured to control the compressor to be turned off and control the second heat exchanger to be connected.

[0014] Optionally, the air conditioning system further includes:

[0015] In a third operating mode, the control device is configured to control the compressor to be turned on, control the brine channel to be connected, and control the second heat exchanger to be connected.

[0016] Optionally, the coolant circulation system further includes:

[0017] a third pipeline, wherein the second heat exchanger is disposed on the third pipeline, and the third pipeline is connected between the first pipeline and the second pipeline; and

[0018] A pump is provided on the first pipeline or the second pipeline.

[0019] Optionally, the flow control device includes a three-way valve, and the three-way valve is arranged at the connection between the first pipeline and the third pipeline, or at the connection between the second pipeline and the third pipeline.

[0020] Optionally, the flow control device includes two solenoid valves; wherein, one solenoid valve is arranged on the inlet section of the first pipeline or the outlet section of the second pipeline to control the on-off of the refrigerant channel; the other solenoid valve is arranged on the third pipeline to control the on-off of the second heat exchanger.

[0021] Optionally, the air conditioning system further includes:

[0022] A first temperature sensor, wherein the first temperature sensor is used to obtain the ambient temperature; and / or

[0023] The second temperature sensor is used to obtain the temperature of the coolant.

[0024] Optionally, the air-conditioning system is a chiller.

[0025] The utility model can provide the air-conditioning system with at least two operating modes by setting a second heat exchanger and a flow control device. Among them, when the ambient temperature is low, the compressor can be turned off, and only the second heat exchanger can be used to exchange heat with the cold air to reduce the refrigerant temperature, thereby achieving refrigeration of the target device. When the ambient temperature is high, the compressor can be turned on, and the second heat exchanger can be opened or closed to use only the compressor for refrigeration, or to use the compressor and the second heat exchanger for refrigeration. Therefore, in addition to having an operating mode of only compressor refrigeration, the air-conditioning system of the utility model can also have an operating mode of only using a natural cold source for refrigeration, and / or an operating mode of using both a natural cold source and a compressor for refrigeration; thereby, it is beneficial to select different operating modes according to actual working conditions, so as to make the best use of the natural cold source and save energy.

[0026] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0028] Figure 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present utility model;

[0029] Figure 2 It is a schematic structural diagram of an air conditioning system according to an embodiment of the present utility model.

[0030] List of reference numerals:

[0031] 100. Refrigerant circulation system;

[0032] 110. Compressor;

[0033] 120. Condenser;

[0034] 130. Throttling device;

[0035] 140. First heat exchanger; 141. Refrigerant channel; 142. Coolant channel;

[0036] 150, second fan;

[0037] 200. Coolant circulation system;

[0038] 210, first pipeline;

[0039] 220, second pipeline;

[0040] 230, second heat exchanger;

[0041] 240, three-way valve;

[0042] 250, solenoid valve;

[0043] 260, first fan;

[0044] 270, pump;

[0045] 280, the third pipeline;

[0046] 300. Target device. DETAILED DESCRIPTION

[0047] Refer to the following Figures 1 to 2 To describe the air-conditioning system of an embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0048] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B. The term "and / or" is a description of an association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B. The term "corresponding" can refer to an association relationship or a binding relationship. A and B corresponding means that there is an association relationship or a binding relationship between A and B.

[0049] Unless otherwise expressly specified or limited, terms such as "disposed," "installed," "connected," "connected," "fixed," and "coupled" should be interpreted broadly. For example, they may refer to fixed or detachable connections, or integration; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two elements or interaction between two elements, unless otherwise expressly limited. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0050] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact via another feature between them. That is, in the description of this embodiment, the first feature being "above," "above," and "above" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below," "below," or "below" the second feature may mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0051] In the description of the present embodiment, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0052] Figure 1 is a schematic structural diagram of an air conditioning system according to an embodiment of the present utility model, as shown in FIG. Figure 1 As shown, and reference Figure 2 , an embodiment of the utility model provides an air conditioning system.

[0053] The air conditioning system includes a refrigerant circulation system 100 and a brine circulation system 200. The brine circulation system 200 contains brine, and the refrigerant circulation system 100 contains refrigerant.

[0054] The refrigerant circulation system 100 includes a compressor 110 , a condenser 120 , a throttling device 130 and a first heat exchanger 140 connected in sequence, wherein the first heat exchanger 140 has a refrigerant channel 141 and a brine channel 142 .

[0055] The brine circulation system 200 includes a first pipeline 210, a second pipeline 220, a second heat exchanger 230, and a flow control device. The first pipeline 210 connects the outlet of the brine channel 142 with the brine inlet of the target device 300; the second pipeline 220 connects the inlet of the brine channel 142 with the brine outlet of the target device 300. The second heat exchanger 230 is used to exchange heat between the brine and cold air. The second heat exchanger 230 is arranged in parallel with the brine channel 142, and the flow control device is configured to control the opening and closing of the brine channel 142 and the opening and closing of the second heat exchanger 230.

[0056] In this embodiment, by providing the second heat exchanger 230 and the flow control device, the air conditioning system can have at least two operating modes.

[0057] When the ambient temperature is low, compressor 110 can be turned off, and only second heat exchanger 230 can be used to exchange heat with the cold air, thereby lowering the coolant temperature and cooling the target device 300, thereby achieving energy conservation. Specifically, the low-temperature coolant flows out of second heat exchanger 230 and is transported to the target device 300 through first pipeline 210, where it cools the target device 300 and produces high-temperature coolant. The high-temperature coolant then returns to second heat exchanger 230 through second pipeline 220 to exchange heat with the cold air.

[0058] When the ambient temperature is high, the compressor 110 may be turned on, and the second heat exchanger 230 may be turned on or off, so as to utilize only the compressor 110 for cooling, or utilize both the compressor 110 and the second heat exchanger 230 for cooling.

[0059] Therefore, in addition to the operating mode in which only the compressor 110 is used for cooling, the air-conditioning system of this embodiment can also have an operating mode in which only a natural cold source is used for cooling, and / or an operating mode in which both a natural cold source and the compressor 110 are used for cooling, thereby better saving energy.

[0060] like Figure 1 As shown, in some optional embodiments of the present invention, the brine circulation system 200 further includes a first fan 260 , which is disposed on one side of the second heat exchanger 230 .

[0061] When the second heat exchanger 230 is working, turning on the first fan 260 can speed up the flow of air near the second heat exchanger 230, thereby improving the heat exchange effect of the second heat exchanger 230 and enabling the second heat exchanger 230 to output a coolant with a lower temperature.

[0062] In some optional embodiments of the present invention, the air-conditioning system further includes a control device, which is configured to control the operating state of the compressor 110 and / or the refrigerant circulation system 200 according to the ambient temperature and / or the refrigerant temperature.

[0063] Specifically, "controlling the working state of the compressor 110 and / or the refrigerant circulation system 200 according to the ambient temperature and / or the refrigerant temperature" includes: controlling the working state of at least one of the compressor 110 and the refrigerant circulation system 200 according to at least one of the ambient temperature and the refrigerant temperature.

[0064] The coolant temperature includes: the coolant temperature at the inlet and / or outlet of the first pipeline 210 ; and / or the coolant temperature at the inlet and / or outlet of the second pipeline 220 .

[0065] “Controlling the operating state of the brine circulation system 200 ” can be achieved by controlling the operating state of the flow path control device.

[0066] In this embodiment, through the above-mentioned settings, the air-conditioning system can adaptively adjust its operating mode according to changes in actual working conditions, thereby being more conducive to energy saving.

[0067] In some optional embodiments of the present invention, the air conditioning system includes a first operating mode and a second operating mode. In the first operating mode, the compressor 110 is controlled to be on, the brine channel 142 is controlled to be connected, and the second heat exchanger 230 is controlled to be disconnected. In the second operating mode, the compressor 110 is controlled to be off, and the second heat exchanger 230 is controlled to be connected.

[0068] Specifically, in the first operating mode:

[0069] The refrigerant circulation process is as follows: high-temperature refrigerant flows out of the compressor 110, passes through the condenser 120 and the throttling device 130 in sequence, and then enters the refrigerant channel 141 of the first heat exchanger 140 to exchange heat with the refrigerant in the refrigerant channel 142 to reduce the temperature of the refrigerant, and then the refrigerant returns to the compressor 110 again, and the cycle continues.

[0070] The process of the refrigerant circulation is as follows: the low-temperature refrigerant flows out from the refrigerant channel 142 of the first heat exchanger 140 and enters the target device 300 through the first pipeline 210, cooling the target device 300 and turning into a high-temperature refrigerant; then the high-temperature refrigerant returns to the refrigerant channel 142 through the second pipeline 220, and the cycle continues.

[0071] In the second operating mode:

[0072] The refrigerant circulation system 100 does not operate.

[0073] The process of the refrigerant circulation is as follows: the second heat exchanger 230 cools the refrigerant, the low-temperature refrigerant flows out of the second heat exchanger 230, and is transported to the target device 300 through the first pipeline 210, cooling the target device 300 to obtain a high-temperature refrigerant; then the high-temperature refrigerant returns to the second heat exchanger 230 through the second pipeline 220, exchanges heat with the cold air, and the cycle continues.

[0074] In some optional embodiments of the present invention, the air conditioning system includes a first operating mode, a second operating mode, and a third operating mode. In the third operating mode, the compressor 110 is controlled to be turned on, the secondary refrigerant channel 142 is controlled to be connected, and the second heat exchanger 230 is controlled to be connected.

[0075] Specifically, in the third operating mode:

[0076] The refrigerant circulation process is similar to the refrigerant circulation process in the first operating mode and will not be described in detail here.

[0077] The process of the refrigerant circulation is as follows: the low-temperature refrigerant flowing out of the first heat exchanger 140 and the low-temperature refrigerant flowing out of the second heat exchanger 230 are transported to the target device 300 through the first pipeline 210, exchange heat with the target device 300, and obtain high-temperature refrigerant; part of the high-temperature refrigerant is transported to the first heat exchanger 140 through the second pipeline 220 to exchange heat with the low-temperature refrigerant, and the other part is transported to the second heat exchanger 230 to exchange heat with the cold air, and the cycle is repeated.

[0078] In some optional embodiments of the present invention, the brine circulation system 200 further includes a pump 270, which is disposed on the first pipeline 210 or the second pipeline 220. The pump 270 is used to drive the brine in the brine system to circulate. Specifically, the pump 270 can be a cooling water pump.

[0079] In some optional embodiments of the present invention, the brine circulation system 200 further includes a third pipeline 280 . The second heat exchanger 230 is disposed on the third pipeline 280 , and the third pipeline 280 is connected between the first pipeline 210 and the second pipeline 220 .

[0080] In some optional embodiments of the present invention, the outlet of the second heat exchanger 230 is directly connected to the first pipeline 210 , and the inlet of the second heat exchanger 230 is directly connected to the second pipeline 220 .

[0081] In some optional embodiments of the present invention, the flow control device includes a three-way valve 240. The three-way valve 240 is disposed at the connection between the first pipeline 210 and the third pipeline 280. Specifically, the three-way valve 240 has three interfaces, allowing fluids from two inlets to mix and then flow out through one outlet.

[0082] like Figure 1 As shown, in some optional embodiments of the present invention, the flow control device includes a three-way valve 240. The three-way valve 240 is disposed at the connection between the second pipeline 220 and the third pipeline 280. Specifically, the three-way valve 240 has three interfaces, allowing fluid to enter from one inlet and then be divided into two outlets.

[0083] In some optional embodiments of the present invention, the flow control device includes two solenoid valves 250. One solenoid valve 250 is disposed at the inlet section of the first pipeline 210 to control the opening and closing of the refrigerant channel 142; the other solenoid valve 250 is disposed on the third pipeline 280 to control the opening and closing of the second heat exchanger 230.

[0084] like Figure 2As shown, in some optional embodiments of the present invention, the flow control device includes two solenoid valves 250. One solenoid valve 250 is provided at the outlet section of the second pipeline 220 to control the opening and closing of the brine channel 142; the other solenoid valve 250 is provided on the third pipeline 280 to control the opening and closing of the second heat exchanger 230.

[0085] In some optional embodiments of the present invention, the air conditioning system further includes a first temperature sensor. The first temperature sensor is used to obtain the ambient temperature and is connected to the controller signal.

[0086] In some optional embodiments of the present invention, the air-conditioning system further includes a second temperature sensor, which is used to obtain the refrigerant temperature, and the second temperature sensor is connected to the controller signal.

[0087] In some optional embodiments of the present invention, the air conditioning system further includes a first temperature sensor and a second temperature sensor. Compared with the above two embodiments, this embodiment switches the operating mode of the air conditioning system based on the ambient temperature and the refrigerant temperature, which helps improve the control accuracy of the air conditioning system and reduce misjudgments.

[0088] In some optional embodiments of the present invention, the air conditioning system further includes a second fan 150. The second fan 150 is disposed on one side of the condenser 120 and is used to blow air to the condenser 120 to improve the heat exchange efficiency of the condenser 120.

[0089] In some optional embodiments of the present invention, the throttling device 130 includes a solenoid valve, an electronic expansion valve, or a capillary tube.

[0090] Among them, compared with solenoid valves and capillary tubes, electronic expansion valves have the characteristics of large flow control range, sensitive response, rapid action, fine adjustment and stable action.

[0091] In the above embodiments, the coolant is an intermediate cooling medium, and the coolant can be water, salt water, or an aqueous solution of an organic compound such as ethylene glycol or glycerol.

[0092] In some optional embodiments of the present invention, the air-conditioning system is a chiller and the refrigerant is water.

[0093] In the above embodiments, the target device 300 may be a laser device or other devices.

[0094] Specifically, when target device 300 is a laser device, the air conditioning system is a laser chiller. When the ambient temperature is ≥5°C, the laser chiller operates in a first operating mode, with the compressor, the second fan, and the pump running. When the ambient temperature is <5°C, the laser chiller operates in a second operating mode, with the first fan and the pump running.

[0095] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications consistent with the principles of the present invention can be directly determined or deduced from the contents disclosed herein without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims

1. An air conditioning system, characterized in that: include: A refrigerant circulation system, the refrigerant circulation system comprising a compressor, a condenser, a throttling device and a first heat exchanger connected in sequence, wherein the first heat exchanger has a refrigerant channel and a brine channel; A brine circulation system, comprising a first pipeline, a second pipeline, a second heat exchanger, and a flow control device, wherein the first pipeline is used to connect the outlet of the brine channel and the brine inlet of the target device; The second pipeline is used to connect the inlet of the refrigerant channel and the refrigerant outlet of the target device; the second heat exchanger is arranged in parallel with the refrigerant channel; and the flow control device is configured to control the on and off of the refrigerant channel and the second heat exchanger.

2. The air conditioning system according to claim 1, characterized in that The brine circulation system further includes: A first fan is provided on one side of the second heat exchanger.

3. The air conditioning system according to claim 1, characterized in that Also includes: A control device is configured to control the working state of the compressor and / or the refrigerant circulation system according to the ambient temperature and / or the refrigerant temperature.

4. The air conditioning system according to claim 3, characterized in that The air conditioning system comprises: a first operating mode, in which the control device is configured to control the compressor to be turned on, the brine channel to be connected, and the second heat exchanger to be disconnected; A second operating mode: in the second operating mode, the control device is configured to control the compressor to be turned off and control the second heat exchanger to be connected.

5. The air conditioning system according to claim 3, characterized in that The air conditioning system further comprises: In a third operating mode, the control device is configured to control the compressor to be turned on, control the brine channel to be connected, and control the second heat exchanger to be connected.

6. The air conditioning system according to claim 1, characterized in that The brine circulation system further includes: a third pipeline, wherein the second heat exchanger is disposed on the third pipeline, and the third pipeline is connected between the first pipeline and the second pipeline; and A pump is provided on the first pipeline or the second pipeline.

7. The air conditioning system according to claim 6, characterized in that The flow path control device includes a three-way valve, and the three-way valve is arranged at the connection between the first pipeline and the third pipeline, or at the connection between the second pipeline and the third pipeline.

8. The air conditioning system according to claim 6, characterized in that The flow control device includes two solenoid valves; one solenoid valve is arranged on the inlet section of the first pipeline or the outlet section of the second pipeline to control the on-off of the refrigerant channel; the other solenoid valve is arranged on the third pipeline to control the on-off of the second heat exchanger.

9. The air conditioning system according to claim 1, characterized in that The air conditioning system further comprises: A first temperature sensor, wherein the first temperature sensor is used to obtain the ambient temperature; and / or The second temperature sensor is used to obtain the temperature of the coolant.

10. The air conditioning system according to claim 1, wherein: The air conditioning system is a chiller.

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