CN113645809A

CN113645809A - Cooling device, air conditioning system and control method of cooling device

Info

Publication number: CN113645809A
Application number: CN202110931772.7A
Authority: CN
Inventors: 刘文斌; 周玲; 周威; 潘李奎; 王炜棠; 罗星
Original assignee: Shenzhen Mcquay Air Conditioning Co Ltd
Current assignee: Shenzhen Mcquay Air Conditioning Co Ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-11-12
Anticipated expiration: 2041-08-13
Also published as: CN113645809B

Abstract

The application provides a cooling device, an air conditioning system and a control method of the cooling device, wherein the cooling device comprises: a heat exchanger for cooling a heat generating component; the first flow path is connected with an inlet of the heat exchanger and used for conveying a refrigerant in air conditioning equipment to the heat exchanger; the second flow path is connected with an outlet of the heat exchanger and is used for conveying the refrigerant flowing out of the heat exchanger to the air conditioning equipment; the first adjusting valve assembly is arranged on the second flow path and used for adjusting the flow of the refrigerant flowing out of the heat exchanger; the first pressure sensor assembly is arranged on the second flow path, is positioned on the inlet side of the first regulating valve assembly and is used for detecting the pressure of the refrigerant flowing out of the heat exchanger; and a controller that controls the first regulator valve assembly according to a detection result of the first pressure sensor assembly in a first control mode.

Description

Cooling device, air conditioning system and control method of cooling device

Technical Field

The present disclosure relates to the field of control technologies, and in particular, to a cooling device, an air conditioning system, and a control method of the cooling device.

Background

In recent years, the market acceptance of frequency conversion energy conservation is higher and higher, the market share of the frequency conversion air conditioner is rapidly increased, and the frequency conversion air conditioner becomes the development trend of the future air conditioner. The variable frequency air conditioner dynamically adjusts the running speed of the compressor according to the requirements of a user through the frequency converter, so that energy can be reasonably used, the compressor is kept in a stable working state, and the whole air conditioner achieves an energy-saving effect.

At present, the heat dissipation mode of the frequency converter mainly adopts two modes of air cooling heat dissipation and fluorine cooling heat dissipation. Wherein, in the air-cooled radiating mode, the heat that gives off when the converter moves is derived through the heat exchanger, and the heat transfer to the air of heat exchanger is forced to the convection current by the fan again, and then realizes the cooling of converter. However, the air-cooled heat dissipation mode has a low heat transfer coefficient, so that a large area of a heat exchanger is needed, and the cost is high; and, when outdoor ambient temperature is higher, the converter calorific capacity increases, and the forced air cooling heat dissipation ability weakens, and the temperature of converter can constantly rise, may lead to the converter to damage at last. In the fluorine cooling heat dissipation mode, the heat dissipated when the frequency converter operates is conducted out through the heat exchanger, and then the heat of the heat exchanger is transferred to an air conditioning system through refrigerant evaporation phase change, so that the frequency converter is cooled. Because the heat transfer coefficient of the fluorine cooling heat dissipation mode is higher, the area of the required heat exchanger is smaller, and the cost is lower.

It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.

Disclosure of Invention

The inventors have found that in the fluorine cooling heat radiation system, when liquid is taken out from the air conditioning equipment, the state difference of the refrigerant at the inlet of the heat exchanger is large. If the temperature of the refrigerant is too high, the cooling effect is influenced; if the temperature of the refrigerant is too low, condensation can be generated on the surface of the frequency converter. In the prior art, the situation that the frequency converter cannot reach a proper temperature range and is finally burnt out occurs because the control of the fluorine cooling heat dissipation technology is inaccurate or complicated.

In order to solve at least one of the above problems or the like, embodiments of the present application provide a cooling device, an air conditioning system, and a control method of the cooling device. In the cooling device, a flow path connected with an outlet of the heat exchanger is provided with a regulating valve component for regulating the flow of the refrigerant flowing out of the heat exchanger and a pressure sensor component for detecting the pressure of the refrigerant flowing out of the heat exchanger, and the regulating valve component is controlled according to the detection result of the pressure sensor component. Thus, the adjustment valve assembly can be accurately controlled, so that the cooling effect of the heat generating component can be ensured and the surface of the heat generating component can be prevented from being condensed.

According to a first aspect of embodiments of the present application, there is provided a cooling device comprising: a heat exchanger for cooling a heat generating component; the first flow path is connected with an inlet of the heat exchanger and used for conveying a refrigerant in air conditioning equipment to the heat exchanger; the second flow path is connected with an outlet of the heat exchanger and is used for conveying the refrigerant flowing out of the heat exchanger to the air conditioning equipment; the first adjusting valve assembly is arranged on the second flow path and used for adjusting the flow of the refrigerant flowing out of the heat exchanger; the first pressure sensor assembly is arranged on the second flow path, is positioned on the inlet side of the first regulating valve assembly and is used for detecting the pressure of the refrigerant flowing out of the heat exchanger; and a controller that controls the first regulator valve assembly according to a detection result of the first pressure sensor assembly in a first control mode.

According to a second aspect of embodiments of the present application, there is provided an air conditioning system comprising a cooling device as described in the first aspect.

According to a third aspect of embodiments of the present application, there is provided a control method of a cooling device, wherein the cooling device includes: a heat exchanger for cooling a heat generating component; the first flow path is connected with an inlet of the heat exchanger and used for conveying a refrigerant in air conditioning equipment to the heat exchanger; the second flow path is connected with an outlet of the heat exchanger and is used for conveying the refrigerant flowing out of the heat exchanger to the air conditioning equipment; the first adjusting valve assembly is arranged on the second flow path and used for adjusting the flow of the refrigerant flowing out of the heat exchanger; the first pressure sensor assembly is arranged on the second flow path, is positioned on the inlet side of the first regulating valve assembly and is used for detecting the pressure of the refrigerant flowing out of the heat exchanger; and a controller, the method comprising: the controller controls the first regulator valve assembly according to a detection result of the first pressure sensor assembly in a first control mode.

The beneficial effects of the embodiment of the application are that: in the cooling device, a regulating valve component for regulating the flow of the refrigerant flowing out of the heat exchanger and a pressure sensor component for detecting the pressure of the refrigerant flowing out of the heat exchanger are arranged on a flow path connected with an outlet of the heat exchanger, and the regulating valve component is controlled according to the detection result of the pressure sensor component. Thus, the adjustment valve assembly can be accurately controlled, so that the cooling effect of the heat generating component can be ensured and the surface of the heat generating component can be prevented from being condensed.

Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the present application include many variations, modifications, and equivalents within the scope of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

Elements and features described in one drawing or one implementation of an embodiment of the application may be combined with elements and features shown in one or more other drawings or implementations. Moreover, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts for use in more than one embodiment.

The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:

fig. 1 is a schematic view of a refrigeration apparatus according to embodiment 1 of the present application;

fig. 2 is another schematic view of the refrigeration apparatus of embodiment 1 of the present application;

fig. 3 is another schematic view of the refrigeration apparatus of embodiment 1 of the present application;

fig. 4 is another schematic view of the refrigeration apparatus of embodiment 1 of the present application;

fig. 5 is another schematic view of the refrigeration apparatus of embodiment 1 of the present application;

fig. 6 is another schematic view of the refrigeration apparatus according to embodiment 1 of the present application;

fig. 7 is another schematic view of the refrigeration apparatus according to embodiment 1 of the present application;

fig. 8 is another schematic view of the refrigeration apparatus according to embodiment 1 of the present application;

fig. 9 is a schematic view of an air conditioning system according to embodiment 2 of the present application;

fig. 10 is a schematic diagram of a control method of a refrigeration apparatus according to embodiment 3 of the present application.

Detailed Description

The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims. Various embodiments of the present application will be described below with reference to the drawings. These embodiments are merely exemplary and are not intended to limit the present application.

In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. The term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the embodiments of the present application, the singular forms "a", "an", and the like include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "the" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other; in addition, "connection" between elements or nodes on a pipeline guiding a flow of a fluid (for example, a refrigerant in an air conditioning system) may be understood as "connection by a refrigerant pipeline, the connected elements or nodes are communicated with each other through the refrigerant pipeline, and the refrigerant can flow through the refrigerant pipeline". The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art through specific situations.

Example 1

The embodiment 1 of the present application provides a cooling device.

Fig. 1 is a schematic view of a cooling apparatus according to embodiment 1 of the present application. As shown in fig. 1, the cooling apparatus 100 may include: a heat exchanger 101, a first regulator valve assembly 102, a first pressure sensor assembly 103, a controller 105, a first flow path, and a second flow path. Wherein the first flow path is a flow path from an inlet X1 of the cooling device 100 to an inlet X2 of the heat exchanger 101; the second flow path is a flow path from the outlet Y2 of the heat exchanger 101 to the outlet Y1 of the cooling device 100.

As shown in fig. 1, a heat exchanger 101 is used to cool heat generating components. The first flow path is connected to an inlet X2 of the heat exchanger 101, and is used for conveying a refrigerant in the air conditioning equipment to the heat exchanger 101. The second flow path is connected to an outlet Y2 of the heat exchanger 101, and is configured to deliver the refrigerant flowing out of the heat exchanger 101 to the air conditioning equipment. The first modulator valve assembly 102 is disposed on the second flow path, and is configured to modulate a flow rate of the refrigerant flowing out of the heat exchanger 101. The first pressure sensor assembly 103 is disposed on the inlet side of the first regulator valve assembly 102 on the second flow path, and is configured to detect a pressure of the refrigerant flowing out of the heat exchanger 101. The controller 105 controls the first regulator valve assembly 102 in the first control mode based on the detection result of the first pressure sensor assembly 103.

According to the above embodiment, in the cooling device 100, the first pressure sensor unit 103 for detecting the pressure of the refrigerant flowing out of the heat exchanger 101 is provided in the flow path connected to the outlet Y2 of the heat exchanger 101. The pressure of the refrigerant and the saturation temperature of the refrigerant have a corresponding relationship, and the saturation temperature of the refrigerant flowing out of the heat exchanger can be accurately determined according to the pressure detected by the first pressure sensor assembly 103.

In the related art, a temperature sensor is generally provided outside the pipe line of the second flow path to detect the temperature of the refrigerant flowing out of the heat exchanger. Since the temperature sensor detects the overheat temperature of the refrigerant, the detection result is not real and has low speed, so that the condensation phenomenon may occur for a period of time or all the time under the condition that the overheat temperature of the refrigerant detected by the temperature sensor reflects the existence of the condensation risk.

Therefore, compared to the conventional method of detecting the temperature of the refrigerant, when the first modulator valve assembly 102 is controlled based on the detection result of the first pressure sensor assembly 103, the first modulator valve assembly 102 can be precisely controlled, and thus the cooling effect on the heat generating components can be ensured and the surface of the heat generating components can be prevented from being exposed to condensation.

In at least one embodiment, the heat generating component may be a heat generating component of an inverter of an air conditioning apparatus, such as a rectifier bridge component and an inverter component (e.g., an igbt (insulated Gate Bipolar transistor)) of the inverter. However, the present application is not limited thereto, and the heat generating component may be another heat generating component.

In at least one embodiment, the first pressure sensor assembly 103 can be a number of no less than 1 pressure sensor.

In at least one embodiment, the first modulator valve assembly 102 may be a valve member whose opening degree is adjustable by not less than 1.

In at least one embodiment, the controller 105 may control the opening degree of the first regulator valve assembly 102 according to the detection result of the first pressure sensor assembly 103. For example, the relationship between the refrigerant saturation temperature corresponding to the pressure detected by the first pressure sensor assembly 103 and a predetermined temperature value, which may be a temperature value set according to actual conditions, is compared, and the opening degree of the first regulator valve assembly 102 is adjusted according to the comparison result. When the refrigerant saturation temperature corresponding to the pressure detected by the first pressure sensor assembly 103 is less than a predetermined temperature value, the opening degree of the first regulator valve assembly 102 is reduced; and/or when the refrigerant saturation temperature corresponding to the pressure detected by the first pressure sensor assembly 103 is equal to a specified temperature value, maintaining the opening degree of the first regulating valve assembly 102; and/or, when the refrigerant saturation temperature corresponding to the pressure detected by the first pressure sensor assembly 103 is greater than a predetermined temperature value, the opening degree of the first regulator valve assembly 102 is increased. However, the present application is not limited thereto, and the controller 105 may control the opening degree of the first modulator valve assembly 102 in other manners.

In at least one embodiment, the cooling device 100 may also have a first temperature sensor assembly 104. The first temperature sensor assembly 104 is disposed within a range of a prescribed distance from the heat exchanger 101, and detects an ambient temperature of the heat exchanger 101. The controller 105 controls the first regulator valve assembly 102 in the first control mode based on the detection results of the first pressure sensor assembly 103 and the first temperature sensor assembly 104.

In at least one embodiment, the first temperature sensor assembly 104 may be a number of not less than 1 temperature sensor. It may be provided in the vicinity of the heat exchanger 101, for example, at a predetermined distance from the heat exchanger 101, thereby enabling detection of the temperature of the environment in which the heat exchanger 101 is located. In the present application, the range of the predetermined distance is not particularly limited as long as the temperature of the environment in which the heat exchanger 101 is located can be obtained.

In at least one embodiment, in the first control mode, the controller 105 decreases the opening degree of the first regulator valve assembly 102 when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is less than the temperature detected by the first temperature sensor assembly 104; and/or when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is equal to the temperature detected by the first temperature sensor assembly 104, maintaining the opening degree of the first regulating valve assembly 102; and/or when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is higher than the temperature detected by the first temperature sensor assembly 104, the opening degree of the first regulating valve assembly 102 is increased.

According to the above embodiment, the controller 105 may compare the saturation temperature of the refrigerant corresponding to the pressure value of the refrigerant flowing out of the heat exchanger 101 with the ambient temperature of the heat exchanger 101, and adjust the opening degree of the first modulator valve assembly 102 according to the comparison result. For example, when the pressure value detected by the first pressure sensor assembly 103 is large, the saturation temperature of the refrigerant is high, and when the saturation temperature of the refrigerant is higher than the ambient temperature of the heat exchanger 101, the heat dissipation of the heat generating components is not facilitated. By increasing the opening degree of the first modulator valve assembly 102, the pressure of the refrigerant flowing out of the heat exchanger 101 can be reduced, and the saturation temperature of the refrigerant can be reduced. For example, when the pressure value detected by the first pressure sensor unit 103 is small, the saturation temperature of the refrigerant is low, and when the saturation temperature of the refrigerant is lower than the ambient temperature of the heat exchanger 101, condensation is likely to occur on the surface of the heat generating component. By reducing the opening degree of the first modulator valve assembly 102, the pressure of the refrigerant flowing out of the heat exchanger 101 can be increased, and the saturation temperature of the refrigerant can be increased.

In at least one embodiment, the controller 105 may also control the first regulator valve assembly 102 in a second control mode that is different from the first control mode. The controller 105 may switch the control mode from the first control mode to the second control mode or from the second control mode to the first control mode when a predetermined condition is satisfied.

Fig. 2 is another schematic diagram of the cooling device 100 according to embodiment 1 of the present application, and fig. 2 adds components related to the process in which the controller 105 controls the first modulator valve assembly 102 in the second control mode to fig. 1. In at least one embodiment, as shown in fig. 2, the cooling device 100 may further include a second pressure sensor assembly 106. The second pressure sensor assembly 106 is disposed on the first flow path and detects a pressure of the refrigerant flowing into the cooling device 100. The controller 105 controls the opening degree of the first modulator valve assembly 102 in the second control mode based on the detection result P2 of the first pressure sensor assembly 103 and the detection result P1 of the second pressure sensor assembly 106.

In at least one embodiment, in the second control mode, the controller 105 controls the opening of the first regulator valve assembly 102 based on a differential fluid draw pressure equal to the difference between the pressure P1 detected by the second pressure sensor assembly 106 and the pressure P2 detected by the first pressure sensor assembly 103.

In at least one embodiment, when the draw differential pressure is less than the first differential pressure target value, the opening of the first regulator valve assembly 102 is increased; maintaining the opening of the first regulator valve assembly 102 when the draw differential pressure is equal to the first differential pressure target value; when the fluid-taking pressure difference is greater than the first pressure difference target value, the opening degree of the first regulator valve assembly 102 is decreased.

According to the above embodiment, by adjusting the opening degree of the first regulator valve assembly 102, the difference between the pressure value of the refrigerant at the inlet (the pressure P1 detected by the second pressure sensor assembly 106) and the pressure value of the refrigerant at the outlet (the pressure P2 detected by the first pressure sensor assembly 102) of the cooling device 100 can be maintained at the predetermined target differential pressure value, so that the refrigerant can be ensured to smoothly flow into the cooling device, and the cooling effect can be ensured.

In at least one embodiment, the first differential pressure target value may be a preset value, and the magnitude thereof is not particularly limited in the present application as long as the differential pressure value allows the refrigerant to smoothly flow into the cooling device 100.

In at least one embodiment, the second pressure sensor assembly 106 can be a number of pressure sensors no less than 1.

Wherein fig. 2 illustrates components associated with a process by which the controller 105 controls the first regulator valve assembly 102 in a first control mode and a second control mode. Other components may also be involved when the controller 105 switches control modes, as shown in fig. 3. Fig. 3 is another schematic view of the cooling device 100 according to embodiment 1 of the present application. As shown in fig. 3, in at least one embodiment, the cooling device 100 may further include a second temperature sensor assembly 107 and a second regulator valve assembly 108. The controller 105 can switch between the first control mode and the second control mode according to the detection results of the first pressure sensor assembly 103, the second pressure sensor assembly 106, the first temperature sensor assembly 104, and the second temperature sensor assembly 107, and the opening degree of the second regulator valve assembly 108.

Wherein the second temperature sensor assembly 107 is disposed in an arrangement region of the heat generating component for detecting the temperature of the inside of the heat generating component. The second temperature sensor assembly 107 may be a number of temperature sensors no less than 1. For example, the temperature sensor may be provided inside the IGBT, and detect the temperature of the IGBT-U cell, the IGBT-V cell, and the IGBT-W cell of the IGBT, and take the maximum value among the three as the detection result. However, the present application is not limited thereto, and the second temperature sensor assembly 107 may detect the temperature inside the heat generating component in other manners.

The second regulating valve assembly 108 is disposed on the first flow path, and is used for regulating the flow rate of the refrigerant entering the heat exchanger 101. The second modulator valve assembly 108 may be a valve member whose opening degree is adjustable by not less than 1 or a valve member having only an opening and closing function.

In at least one embodiment, the controller 105 may switch the first control mode to the second control mode based on the detection results of the first pressure sensor assembly 103, the second pressure sensor assembly 106, the second temperature sensor assembly 107, and the opening degree of the second regulator valve assembly 108. For example, the controller 105 switches the first control mode to the second control mode when the difference (the liquid-taking differential pressure) between the pressure detected by the second pressure sensor unit 106 and the pressure detected by the first pressure sensor unit 103 is smaller than the second differential pressure target value, the opening degree of the second regulator valve unit 108 is at the maximum opening degree target value, and the temperature of the second temperature sensor unit 107 is greater than the predetermined temperature target value.

The second pressure difference target value may be a preset target value, which may be a pressure difference value smaller than the first pressure difference target value. That is, when the liquid-taking pressure difference is smaller than the second pressure difference target value, the refrigerant cannot smoothly flow into the cooling device 100. The predetermined temperature target value may be a target value set in advance according to actual conditions, and specific values of the target value are not particularly limited in the present application.

According to the above embodiment, when the liquid-taking pressure difference is too small, the opening degree of the second regulator valve assembly 108 is at the maximum, and the temperature inside the heat generating component is too high, the flow rate of the refrigerant flowing into the cooling device 100 is too small, which is a factor causing the temperature inside the heat generating component to be too high, and at this time, the controller 105 switches the control mode from the first control mode in which the temperature is directly controlled to the second control mode in which the pressure difference is directly controlled, and in the second control mode, the liquid-taking pressure difference can be directly adjusted by controlling the opening degree of the first regulator valve assembly 102. The liquid-taking pressure difference can be controlled to be close to an ideal value, the flow rate of the refrigerant flowing into the cooling device 100 can be ensured, and the problem of excessive temperature inside the heat-generating component can be solved.

In at least one embodiment, in the second control mode, the controller 105 switches the second control mode to the first control mode according to the detection results of the first pressure sensor assembly 103 and the first temperature sensor assembly 104. For example, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor unit 103 is higher than the temperature value detected by the first temperature sensor unit 104, the controller 105 switches the second control mode to the first control mode.

According to the above embodiment, when the refrigerant saturation temperature is higher than the ambient temperature of the heat exchanger 101, the controller 105 switches the control mode from the second control mode in which the pressure difference is directly controlled to the first control mode in which the temperature is directly controlled, thereby solving the problem that the heat dissipation of the heat generating components is not facilitated due to the refrigerant saturation temperature being higher than the ambient temperature of the heat exchanger 101.

According to the above embodiment, the controller 105 may control the opening degree of the first modulator valve assembly 102 based on the detection results of the first pressure sensor assembly 103, the second pressure sensor assembly 106, the first temperature sensor assembly 104, and the second temperature sensor assembly 107, and the opening degree of the second modulator valve assembly 108.

In at least one embodiment, the controller 105 may determine whether to enter the first control mode or the second control mode based on the opening degrees of the first temperature sensor assembly 104, the second temperature sensor assembly 107, the first pressure sensor assembly 103, the second pressure sensor assembly 106, and the second regulator valve assembly 108 when the cooling apparatus 100 is powered on and in the activated state. The condition for entering the first control mode is the same as the switching condition for switching from the second control mode to the first control mode, and the condition for entering the second control mode is the same as the switching condition for switching from the first control mode to the second control mode, which is not described herein again. However, the present application is not limited to this, and when the cooling device 100 is powered on and is in the activated state, the controller 105 may default to the first control mode without performing the above-described determination.

Fig. 4 is another schematic view of the cooling device 100 according to embodiment 1 of the present application. In at least one embodiment, as shown in fig. 4, the cooling device 100 may further include a second temperature sensor assembly 107 and a second regulator valve assembly 108. The controller 105 adjusts the opening degree of the second regulator valve assembly 108 based on the detection result of the second temperature sensor assembly 107. Wherein the second temperature sensor assembly 107 and the second modulating valve assembly 108 may be the same assembly as the second temperature sensor assembly 107 and the second modulating valve assembly 108 shown in figure 3.

For example, when the temperature detected by the second temperature sensor assembly 107 is greater than the first temperature target value, the controller 105 increases the opening degree of the second regulator valve assembly 108; when the temperature detected by the second temperature sensor assembly 107 is equal to the first temperature target value, the controller 105 maintains the opening degree of the second regulator valve assembly 108; when the temperature detected by the second temperature sensor assembly 107 is less than the first temperature target value, the controller 105 decreases the opening of the second regulator valve assembly 108.

The first temperature target value may be a preset target value, and the present application does not specifically limit a specific value of the target value, and does not limit a magnitude relationship between the first temperature target value and the predetermined temperature target value.

According to the above embodiment, when the temperature inside the heat generating component is high, the opening degree of the second regulator valve assembly 108 is increased, so that more refrigerant can flow into the cooling device 100, and the cooling efficiency of the heat generating component can be improved; when the temperature inside the heat generating component is low, the opening degree of the second regulator valve assembly 108 is reduced, so that the flow rate of the refrigerant flowing into the cooling device 100 can be reduced, and the condensation caused by the excessively low temperature of the heat generating component can be prevented.

In at least one embodiment, the opening of the second regulator valve assembly 108 may be greater than a minimum opening target value. Therefore, the second regulator valve assembly 108 can be kept in an open state all the time, and the situation that the refrigerant cannot flow into the cooling device 100 due to the closing of the second regulator valve assembly 108 can be avoided.

Fig. 5 is another schematic view of the cooling device 100 according to embodiment 1 of the present application. In at least one embodiment, as shown in fig. 5, the cooling device 100 may further include a third regulator valve assembly 109. The third regulating valve assembly 109 is disposed on the first flow path, and is installed in parallel with the second regulating valve assembly 108, for regulating the flow rate of the refrigerant entering the heat exchanger 101. The controller 105 adjusts the opening degree of the third regulator valve assembly 109 based on the detection result of the second temperature sensor assembly 107.

The third regulating valve assembly 109 may be a valve element whose opening degree is adjustable, or a valve element having only an opening and closing function, and the number of the valve elements is not less than 1.

For example, when the temperature detected by the second temperature sensor module 107 is in any one of the 2 or more temperature target regions, the controller 105 controls the opening degree of the third modulator valve module 109 to an opening degree corresponding to the current temperature target region.

In at least one embodiment, the temperature target zone can be at least two zones. The opening values of the regulator valve assembly corresponding to different temperature target zones may be different. For example, the higher the temperature in the temperature target zone, the greater the opening value of the modulating valve assembly; the lower the temperature in the temperature target zone, the smaller the opening value of the modulating valve assembly. Thus, the opening degree of the third regulator valve assembly 109 can be adjusted stepwise according to different temperature target regions. That is, the flow rate of the refrigerant flowing into the cooling device 100 is finely adjusted, thereby solving a problem that the flow rate of the refrigerant cannot be sensitively adjusted by the second modulator valve assembly 108 in a state where the air conditioner is just started.

In at least one embodiment, the controller 105 controls the opening degree of the third modulator valve assembly 109 to the first opening degree target value when the temperature detected by the second temperature sensor assembly 107 is greater than the second temperature target value and less than or equal to the third temperature target value; when the temperature detected by the second temperature sensor assembly 107 is greater than the third temperature target value and less than or equal to the fourth temperature target value, the controller 105 controls the opening degree of the third modulator valve assembly 109 to a second opening degree target value; when the temperature detected by the second temperature sensor assembly 107 is greater than the fourth temperature target value and less than or equal to the fifth temperature target value, the controller 105 controls the opening degree of the third regulator valve assembly 109 to a third opening target value; when the temperature detected by the second temperature sensor assembly 107 is greater than the fifth temperature target value, the controller 105 controls the opening degree of the third modulator valve assembly 109 to a fourth opening degree target value, wherein the first opening degree target value, the second opening degree target value, the third opening degree target value, and the fourth opening degree target value increase in sequence.

In at least one embodiment, the controller 105 controls the opening of the third modulator valve assembly 109 from the fourth opening target value to the third opening target value when the temperature detected by the second temperature sensor assembly 107 is less than the fifth temperature target value and greater than or equal to the fourth temperature target value; when the temperature detected by the second temperature sensor assembly 107 is less than the fourth temperature target value and greater than or equal to the third temperature target value, the controller 105 controls the opening degree of the third modulator valve assembly 109 from the third opening degree target value to the second opening degree target value; when the temperature detected by the second temperature sensor assembly 107 is less than the third temperature target value and greater than or equal to the second temperature target value, the controller 105 controls the opening degree of the third modulator valve assembly 109 from the second opening degree target value to the first opening degree target value; when the temperature detected by the second temperature sensor assembly 107 is less than the second temperature target value, the controller 105 controls the third regulator valve assembly 109 to decrease the opening degree in a stepwise manner to be fully closed.

The second to fifth temperature target values may be target values preset according to actual conditions, and specific values of the target values are not specifically limited in the present application.

Fig. 6 is another schematic view of the cooling device 100 according to embodiment 1 of the present application. In at least one embodiment, as shown in fig. 6, the cooling device 100 may further include: a heater assembly 110 and a third temperature sensor assembly 111. The controller 105 controls the switching of the heater assembly 110 according to the detection result of the third temperature sensor assembly 111.

Wherein the heater assembly 110 is disposed in an arrangement region of the heat exchanger 101 for adjusting a temperature of the heat exchanger. The heater assembly 110 may be an electric heater assembly. However, the present application is not limited thereto, and may be a heater assembly of another type.

The third temperature sensor assembly 111 is disposed on a surface of the heat exchanger 101 for detecting a temperature of the surface of the heat exchanger.

For example, the heater element 110 is turned on when the temperature detected by the third temperature sensor element 111 is less than the heating-on target value, and the heater element 110 is turned off when the temperature detected by the third temperature sensor element 111 is greater than the heating-off target value. The heating start target value may be a target value preset according to an actual situation, and a specific numerical value of the target value is not specifically limited in the present application.

Fig. 7 is another schematic view of the cooling device 100 according to embodiment 1 of the present application. The different combinations of components in fig. 7 may correspond to any one or combination of fig. 3-6, whereby the combination of components in fig. 7 is capable of performing any one or combination of the functions of the cooling device 100 shown in fig. 3-6. An embodiment of the cooling device 100 will be described below by way of example with reference to fig. 7.

As shown in fig. 7, the cooling device 100 includes a heat exchanger 101, a first flow path 112, a second flow path 113, a first modulator valve assembly 102, a second modulator valve assembly 108, a third modulator valve assembly 109, a first pressure sensor assembly 103, a second pressure sensor assembly 106, a first temperature sensor assembly 104, a second temperature sensor assembly 107, a third temperature sensor assembly 111, a heater assembly 110, and a controller 105.

The heat exchanger 101 is provided for inverter heat generating components (e.g., a rectifier bridge and an IGBT) of the air conditioning apparatus, and is used for cooling the inverter heat generating components. The first flow path 112 is connected to an inlet of the heat exchanger 101, and is used for conveying a refrigerant in the air conditioning equipment to the heat exchanger 101. The second flow path 113 is connected to an outlet of the heat exchanger 101, and is configured to convey the refrigerant flowing out of the heat exchanger 101 to an air conditioning apparatus.

As shown in fig. 7, the first modulator valve assembly 102, the second modulator valve assembly 108, and the third modulator valve assembly 109 may be, for example, electronic expansion valves.

As shown in FIG. 7, the second temperature sensor assembly 107 may include three IGBT temperatures (IGBT-U, IGBT-V, IGBT-W), the sensed temperature of which may represent the highest of the three IGBT temperatures. The third temperature sensor assembly 111 includes three temperatures of the surface of the heat exchanger 101, and the detected temperature thereof represents the lowest of the three temperatures of the surface of the heat exchanger 101. A first temperature sensor assembly 104 is arranged near the heat exchanger 101 for checking the ambient temperature.

The controller 105 is connected to the first modulator valve assembly 102, the second modulator valve assembly 108, the third modulator valve assembly 109, the first pressure sensor assembly 103, the second pressure sensor assembly 106, the first temperature sensor assembly 104, the second temperature sensor assembly 107, the third temperature sensor assembly 111, and the heater assembly 110.

The controller 105 may regulate the opening of the first regulator valve assembly 102 in a first control mode based on the first temperature sensor assembly 104 and the first pressure sensor assembly 103; and/or, adjusting the opening degree of the first regulating valve assembly 102 in the second control mode according to the first pressure sensor assembly 103 and the second pressure sensor assembly 106; and/or switching between the first control mode and the second control mode according to the temperature detected by the first temperature sensor 104, the temperature detected by the second temperature sensor assembly 107, the pressure detected by the first pressure sensor 103, the pressure detected by the second pressure sensor 106 and the opening degree of the second cooling regulation valve 108; and/or, the opening degree of the second and third

regulating valve assemblies

108 and 109 is regulated according to the temperature detected by the second temperature sensor assembly 107; and/or the switch of the heater assembly 110 is controlled according to the temperature detected by the third temperature sensor assembly 111.

In at least one embodiment, the inlet X1 of the first flow path (i.e., the inlet X1 of the cooling device) and the outlet Y1 of the second flow path (i.e., the outlet Y1 of the cooling device) are provided in a common passage of the air conditioning apparatus, wherein the common passage is a passage through which a refrigerant flows in both the cooling mode and the heating mode, and in which the refrigerant flows in the same direction in both the cooling mode and the heating mode. Thus, cooling device 100 can cool the heat generating components of the air conditioner regardless of whether the air conditioner is in the cooling mode or the heating mode.

In at least one embodiment, an air conditioning apparatus may include a compressor, a condenser, an expansion valve, and an evaporator. Further, the air conditioning apparatus may further include at least one of an oil separator, a four-way reversing valve, a gas-liquid separator, and an economizer.

Fig. 8 is a schematic view of an air conditioning apparatus 200 according to embodiment 1 of the present application. As shown in fig. 8, the air conditioning apparatus 200 may include a compressor 1, a four-way selector valve 2, an air-side heat exchanger 3, an accumulator 4, a dry filter 5, a shutoff valve 6, a blower 7, an electronic expansion valve 8, a first check valve 9, a second check valve 10, a third check valve 11, a fourth check valve 12, and a water-side heat exchanger 13.

When the air conditioner 200 is in the cooling mode, the circulation path of the refrigerant is as follows: hollow arrow of fig. 8

As shown, high-temperature and high-pressure gaseous refrigerant discharged from an exhaust port of the compressor 1 enters the air side heat exchanger 3 through the four-way reversing valve 2 and is condensed and heat-exchanged with low-temperature air in the air side heat exchanger 3, the condensed liquid refrigerant is throttled into two-phase refrigerant through the electronic expansion valve 8, the refrigerant in the state enters the water side heat exchanger 13 and is evaporated and heat-exchanged with high-temperature cold water in the water side heat exchanger 13, and the evaporated low-temperature and low-pressure gaseous refrigerant returns to an air suction port of the compressor 1 through the four-way reversing valve 2 to complete a complete refrigeration cycle.

When the air conditioner 200 is in the heating mode, the circulation path of the refrigerant is as follows: as shown by the solid dotted arrows in fig. 8

As shown, the high-temperature high-pressure gaseous refrigerant discharged from the exhaust port of the compressor 1 enters the water side heat exchanger 13 through the four-way reversing valve 2 and is condensed and heat-exchanged with low-temperature hot water in the water side heat exchanger 13, the condensed liquid refrigerant enters the liquid reservoir 4, the refrigerant discharged from the liquid reservoir 4 is throttled into a two-phase refrigerant through the electronic expansion valve 8, the refrigerant in the state enters the air side heat exchanger 3 and is evaporated and heat-exchanged with high-temperature air in the air side heat exchanger 3, and the evaporated low-temperature low-pressure gaseous refrigerant returns to the air suction port of the compressor 1 through the four-way reversing valve 2, thereby completing a complete heating cycle.

As shown in fig. 8, the line between the outlet of the first check valve 9 and the inlet of the third check valve 11 is a common passage.

The inlet X1 of the first flow path may be provided between the dry filter 5 and the electronic expansion valve 8. Alternatively, in the case where an economizer (not shown) is provided between the dry filter 5 and the electronic expansion valve 8 of the air conditioning apparatus 200, the inlet X1 of the first flow path may be provided between the economizer and the electronic expansion valve 8, so that the temperature of the refrigerant flowing out of the dry filter 5 can be lowered, and the cooling efficiency of the cooling device 100 can be improved.

As shown in fig. 8, the outlet Y1 of the first flow path may communicate with the inlet of the compressor 1, for example, the outlet Y1 of the first flow path may be disposed near the inlet of the compressor 1.

In the present embodiment, when the first regulator valve assembly 102 is controlled according to the detection result of the first pressure sensor assembly 103, the first regulator valve assembly 102 can be precisely controlled, so that the cooling effect on the heat generating component can be ensured and the surface of the heat generating component can be prevented from being exposed to condensation.

The controller 105 compares the saturation temperature of the refrigerant corresponding to the pressure value of the refrigerant flowing out of the heat exchanger 101 with the ambient temperature of the heat exchanger 101, and adjusts the opening degree of the first regulator valve assembly 102 according to the comparison result. By increasing the opening degree of the first modulator valve assembly 102, the pressure of the refrigerant flowing out of the heat exchanger 101 can be reduced, and the saturation temperature of the refrigerant can be reduced. By reducing the opening degree of the first modulator valve assembly 102, the pressure of the refrigerant flowing out of the heat exchanger 101 can be increased, and the saturation temperature of the refrigerant can be increased.

The controller 105 can maintain a difference between a pressure value of the refrigerant at the inlet and a pressure value of the refrigerant at the outlet of the cooling device 100 at a predetermined target differential pressure value by adjusting the opening degree of the first regulator valve assembly 102 based on the detection results of the first pressure sensor assembly 103 and the second pressure sensor assembly 106, thereby ensuring smooth inflow of the refrigerant into the cooling device and ensuring a cooling effect.

The controller 105 controls the opening degree of the second regulator valve assembly 108 according to the detection result of the second temperature sensor assembly 107, and when the temperature inside the heat generating component is high, the opening degree of the second regulator valve assembly 108 is increased, so that more refrigerant can flow into the cooling device, and the cooling efficiency of the heat generating component can be improved; when the temperature inside the heat generating component is low, the opening degree of the second regulator valve assembly 108 is reduced, so that the flow rate of the refrigerant flowing into the cooling device 100 can be reduced, and the condensation caused by the excessively low temperature of the heat generating component can be prevented.

By providing the inlet X1 of the first flow path and the outlet Y1 of the second flow path in the common passage of the air conditioner, the cooling device 100 can cool the heat generating components of the air conditioner regardless of whether the air conditioner is in the cooling mode or the heating mode.

Example 2

Embodiment 2 of the present application provides an air conditioning system. Fig. 9 is a schematic view of an air conditioning system 300 according to embodiment 2 of the present application. The air conditioning system may include the cooling device 100 and the air conditioning apparatus 200 as described in embodiment 1.

In the present embodiment, by providing the cooling device 100 in the air conditioning system 300, the cooling effect on the heat generating components of the air conditioning system 300 can be ensured and the surface of the heat generating components of the air conditioning system 300 can be prevented from being condensed.

Example 3

Embodiment 3 of the present application provides a method for controlling a cooling device. The cooling device may be the cooling device 100 described in embodiment 1, and the content thereof is incorporated herein and will not be described again.

Fig. 10 is a schematic diagram of a control method of a cooling apparatus according to embodiment 3 of the present application. As shown in fig. 10, the control method may include:

operation 1001: the controller 105 controls the first regulator valve assembly 102 in the first control mode based on the detection result of the first pressure sensor assembly 103.

In at least one embodiment, operation 1001 may include:

the controller 105 controls the first regulator valve assembly 102 in the first control mode based on the detection results of the first pressure sensor assembly 103 and the first temperature sensor assembly 104.

For example, in the first control mode, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is lower than the temperature detected by the first temperature sensor assembly 104, the controller 105 decreases the opening degree of the first regulator valve assembly 102; when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is equal to the temperature detected by the first temperature sensor assembly 104, maintaining the opening degree of the first regulating valve assembly 102; when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is higher than the temperature detected by the first temperature sensor assembly 104, the opening degree of the first modulator valve assembly 102 is increased.

In at least one embodiment, the controller 105 may also perform control in a second control mode that is different from the first control mode.

In at least one embodiment, as shown in fig. 10, the control method may further include:

operation 1002: in the second control mode, the controller 105 controls the opening degree of the first regulator valve assembly 102 based on the detection results of the first pressure sensor assembly 103 and the second pressure sensor assembly 106.

For example, in the second control mode, the controller 105 increases the opening degree of the first regulator valve assembly 102 when the liquid-taking pressure difference is smaller than the first pressure difference target value; maintaining the opening of the first regulator valve assembly 102 when the draw differential pressure is equal to the first differential pressure target value; when the liquid taking pressure difference is greater than the first pressure difference target value, the opening degree of the first regulating valve assembly 102 is reduced; wherein the liquid taking pressure difference is equal to the difference between the pressure detected by the second pressure sensor assembly 106 and the pressure detected by the first pressure sensor assembly 103.

In at least one embodiment, the controller 105 may also switch between the first control mode and the second control mode as the case may be.

In at least one embodiment, the control method may further include:

operation 1003: in the first control mode, the controller 105 determines whether a first prescribed condition is satisfied;

operation 1004: when the first predetermined condition is satisfied, the controller 105 switches the first control mode to the second control mode.

For example, in the first control mode, the controller 105 switches the first control mode to the second control mode based on the detection results of the first pressure sensor module 103, the second pressure sensor module 106, and the second temperature sensor module 107, and the opening degree of the second modulator valve module 108, and for example, when the difference between the pressure detected by the second pressure sensor module 106 and the pressure detected by the first pressure sensor module 103 is smaller than the second differential pressure target value, the opening degree of the second modulator valve module 108 is at the maximum opening degree target value, and the temperature of the second temperature sensor module 107 is greater than the predetermined temperature target value, the controller 105 switches the first control mode to the second control mode; and/or

Operation 1005: in the second control mode, the controller 105 determines whether a second prescribed condition is satisfied;

operation 1006: when a second predetermined condition is satisfied, the controller 105 switches the second control mode to the first control mode.

For example, in the second control mode, the controller 105 switches the second control mode to the first control mode based on the detection results of the first pressure sensor unit 103 and the first temperature sensor unit 104, and for example, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor unit 103 is higher than the temperature value detected by the first temperature sensor unit 104, the controller 105 switches the second control mode to the first control mode.

In at least one embodiment, the controller 105 may determine whether to enter the first control mode or the second control mode based on the opening degrees of the first temperature sensor assembly 104, the second temperature sensor assembly 107, the first pressure sensor assembly 103, the second pressure sensor 106, and the first regulator valve assembly 102 when the cooling apparatus 100 is powered on and in the activated state.

As shown in fig. 10, the control method may further include:

operation 1007: the controller 105 determines whether a second prescribed condition is satisfied;

operation 1008: in the case where the second prescribed condition is satisfied, the controller 105 enters the first control mode;

operation 1009: in the case where the second prescribed condition is not satisfied, the controller 105 determines whether or not the first prescribed condition is satisfied;

operation 1010: in the case where the first prescribed condition is satisfied, the controller 105 enters the second control mode.

However, the present application is not limited to this, and when the cooling device 100 is powered on and is in the activated state, the first control mode may be entered by default without performing the above-described determination.

The flow of the controller 105 controlling the first modulator valve assembly 102 is illustratively described below. The controller 105 may control the opening degree of the first modulator valve assembly 102 according to the detection results of the first pressure sensor assembly 103, the second pressure sensor assembly 106, the first temperature sensor assembly 104, and the second temperature sensor assembly 107, and the opening degree of the second modulator valve assembly 108.

For example, under the normal air conditioning condition, the controller 105 controls the first regulating valve assembly 102 to ensure that the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor 103 is equal to the temperature of the first temperature sensor 104, thereby ensuring that no condensation occurs on the surface of the heat generating component. After the cooling device 100 is started, the controller 105 enters a first control mode, and the control method comprises the following steps:

when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is lower than the temperature detected by the first temperature sensor assembly 104, the opening degree of the first regulating valve assembly 102 is reduced;

when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is equal to the temperature detected by the first temperature sensor assembly 104, maintaining the opening degree of the first regulating valve assembly 102; and

when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is higher than the temperature detected by the first temperature sensor assembly 104, the opening degree of the first modulator valve assembly 102 is increased.

Under severe air conditioning conditions, the controller 105 controls the first modulator valve assembly 102 to ensure that the temperature detected by the second temperature sensor assembly 107 is in a safe state, thereby cooling the heat generating components. When the controller 105 is in the first control mode, the difference (liquid-taking pressure difference) between the pressure detected by the second pressure sensor assembly 106 and the pressure detected by the first pressure sensor assembly 103 is smaller than a second pressure difference target value, the opening degree of the second regulator valve assembly 108 is in a fully open state, and the temperature detected by the second temperature sensor assembly 107 is greater than a prescribed temperature target value, the controller 105 enters the second control mode, and the control method includes the steps of:

when the liquid taking pressure difference is smaller than the first pressure difference target value, controlling the opening degree of the first regulating valve assembly 102 to increase;

when the liquid taking pressure difference is equal to the first pressure difference target value, controlling the opening degree of the first regulating valve assembly 102 to be maintained;

and when the liquid taking pressure difference is larger than the first pressure difference target value, controlling the opening degree of the first regulating valve assembly 102 to be reduced.

Under the working condition of a conventional air conditioner, the controller 105 controls the first regulating valve assembly 102 to ensure that the refrigerant saturation temperature corresponding to the pressure detected by the first pressure sensor assembly 103 is equal to the temperature of the first temperature sensor assembly 104, thereby ensuring that the surface of the heat generating component is not subjected to condensation phenomenon. In the second control mode, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly 103 is greater than the temperature value detected by the first temperature sensor assembly 104, the controller 105 enters the first control mode, and the control method includes the following steps:

In at least one embodiment, the control method may further include:

operation 1011: the controller 105 adjusts the opening degree of the second regulator valve assembly 108 based on the detection result of the second temperature sensor assembly 107.

In at least one embodiment, the control method may further include:

operation 1012: the controller 105 adjusts the opening degree of the third regulator valve assembly 109 based on the detection result of the second temperature sensor assembly 107.

For example, when the temperature detected by the second temperature sensor module 107 is in any one of the 2 or more temperature target regions, the controller 105 controls the opening degree of the third regulator valve module 109 to the opening degree corresponding to the current temperature target region

In at least one embodiment, the control method may further include:

operation 1013: the controller 105 controls the switching of the heater assembly 110 according to the detection result of the third temperature sensor assembly 111. For example, the controller 105 turns on the heater assembly 110 when the temperature detected by the third temperature sensor assembly 111 is less than the heating-on target value, and turns off the heater assembly 110 when the temperature detected by the third temperature sensor assembly 111 is greater than the heating-off target value.

In this embodiment, the execution sequence of the above operations of the control method may be adjusted, and other operations may be added or some of the operations may be reduced.

In embodiments 1 to 3 of the present application, the controller may be implemented by hardware, or may be implemented by hardware in combination with software. The present invention relates to a computer-readable program which, when executed by a logic section, enables the logic section to realize the above-described apparatus or constituent section, or to realize the above-described various methods or steps. The present invention also relates to a storage medium such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like, for storing the above program.

The processing methods in the controller described in connection with the embodiments of the invention may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. For example, one or more controllers and/or one or more combinations of functional blocks may correspond to individual software modules of a computer program flow or may correspond to individual hardware modules. These software modules may correspond to the respective steps. These hardware modules may be implemented, for example, by solidifying these software modules using a Field Programmable Gate Array (FPGA).

A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. A storage medium may be coupled to the processor such that the processor can read information from, and write information to, the storage medium; or the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The software module may be stored in the memory of the mobile terminal or in a memory card that is insertable into the mobile terminal. For example, if the apparatus (e.g., mobile terminal) employs a relatively large capacity MEGA-SIM card or a large capacity flash memory device, the software module may be stored in the MEGA-SIM card or the large capacity flash memory device.

One or more corresponding functions and/or one or more combinations of functional blocks described for the controller can be implemented as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any suitable combination thereof for performing the functions described herein. One or more of the functional block diagrams and/or one or more combinations of the functional block diagrams described with respect to the controller 105 of fig. 1-7 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in communication with a DSP, or any other such configuration.

While the invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the invention. Various modifications and adaptations of the present invention may occur to those skilled in the art, based on the principles of the present invention, and such modifications and adaptations are within the scope of the present invention.

Claims

1. A cooling device, characterized in that the cooling device comprises:

a heat exchanger for cooling a heat generating component;

the first flow path is connected with an inlet of the heat exchanger and used for conveying a refrigerant in air conditioning equipment to the heat exchanger;

the second flow path is connected with an outlet of the heat exchanger and is used for conveying the refrigerant flowing out of the heat exchanger to the air conditioning equipment;

the first adjusting valve assembly is arranged on the second flow path and used for adjusting the flow of the refrigerant flowing out of the heat exchanger;

the first pressure sensor assembly is arranged on the second flow path, is positioned on the inlet side of the first regulating valve assembly and is used for detecting the pressure of the refrigerant flowing out of the heat exchanger; and

a controller that controls the first regulator valve assembly according to a detection result of the first pressure sensor assembly in a first control mode.

2. The cooling device of claim 1, wherein the cooling device further comprises:

a first temperature sensor assembly disposed within a range of a prescribed distance from the heat exchanger, for detecting an ambient temperature of the heat exchanger;

the controller controls the first regulator valve assembly according to detection results of the first pressure sensor assembly and the first temperature sensor assembly in the first control mode.

3. The cooling device according to claim 2,

in the first control mode, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly is lower than the temperature detected by the first temperature sensor assembly, the controller reduces the opening degree of the first regulating valve assembly; when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly is equal to the temperature detected by the first temperature sensor assembly, maintaining the opening degree of the first regulating valve assembly; and when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly is higher than the temperature detected by the first temperature sensor assembly, increasing the opening degree of the first regulating valve assembly.

4. The cooling device according to claim 1 or 2, wherein the cooling device further comprises:

a second pressure sensor unit provided in the first flow path and configured to detect a pressure of the refrigerant flowing into the cooling device;

and the controller controls the opening degree of the first regulating valve assembly according to the detection results of the first pressure sensor assembly and the second pressure sensor assembly in a second control mode.

5. The cooling device according to claim 4,

in the second control mode, the controller increases the opening degree of the first regulating valve assembly when the liquid taking pressure difference is smaller than a first pressure difference target value; when the liquid taking pressure difference is equal to a first pressure difference target value, maintaining the opening degree of the first regulating valve assembly; when the liquid taking pressure difference is larger than a first pressure difference target value, reducing the opening degree of the first regulating valve component; wherein the liquid taking differential pressure is equal to the difference between the pressure detected by the second pressure sensor assembly and the pressure detected by the first pressure sensor assembly.

6. The cooling device of claim 2, wherein the cooling device further comprises:

a second temperature sensor assembly provided in an installation area of the heat-generating component, for detecting a temperature inside the heat-generating component; and

the second regulating valve assembly is arranged on the first flow path and used for regulating the flow of the refrigerant entering the heat exchanger;

in the first control mode, the controller switches the first control mode to the second control mode according to detection results of the first pressure sensor assembly, the second pressure sensor assembly and the second temperature sensor assembly and the opening degree of the second regulator valve assembly; and/or

In the second control mode, the controller switches the second control mode to the first control mode according to detection results of the first pressure sensor assembly and the first temperature sensor assembly.

7. The cooling device according to claim 6,

in the first control mode, the controller switches the first control mode to the second control mode when a difference between the pressure detected by the second pressure sensor assembly and the pressure detected by the first pressure sensor assembly is smaller than a second differential pressure target value, the second regulator valve assembly opening degree is at a maximum opening degree target value, and the temperature detected by the second temperature sensor assembly is greater than a prescribed temperature target value.

8. The cooling device according to claim 6,

in the second control mode, when the refrigerant saturation temperature corresponding to the pressure value detected by the first pressure sensor assembly is greater than the temperature value detected by the first temperature sensor assembly, the controller switches the second control mode to the first control mode.

9. The cooling device of claim 1, wherein the cooling device further comprises:

and the controller adjusts the opening degree of the second regulating valve assembly according to the detection result of the second temperature sensor assembly.

10. The cooling device according to claim 9,

the controller increases the opening degree of the second regulator valve assembly when the temperature detected by the second temperature sensor assembly is greater than a first temperature target value;

the controller maintains the opening degree of the second regulator valve assembly when the temperature detected by the second temperature sensor assembly is equal to a first temperature target value;

the controller reduces the opening of the second regulator valve assembly when the temperature detected by the second temperature sensor assembly is less than a first temperature target value.

11. The cooling device of claim 9, wherein the cooling device further comprises:

the third regulating valve assembly is arranged on the first flow path, is installed in parallel with the second regulating valve assembly and is used for regulating the flow of the refrigerant entering the heat exchanger;

and the controller adjusts the opening degree of the third adjusting valve assembly according to the detection result of the second temperature sensor assembly.

12. The cooling device according to claim 11,

when the temperature detected by the second temperature sensor assembly is in one of more than 2 temperature target areas, the controller controls the opening degree of the third regulating valve assembly to be a specified opening degree corresponding to the current temperature target area.

13. The cooling device of claim 1, wherein the cooling device further comprises:

a heater assembly disposed in the region where the heat exchanger is disposed for adjusting the temperature of the heat exchanger, an

The third temperature sensor assembly is arranged on the surface of the heat exchanger and used for detecting the temperature of the surface of the heat exchanger;

the controller controls the switch of the heater assembly according to the detection result of the third temperature sensor assembly.

14. The cooling apparatus according to claim 13,

the controller turns on the heater assembly when the temperature detected by the third temperature sensor assembly is less than a heating-on target value, and turns off the heater assembly when the temperature detected by the third temperature sensor assembly is greater than a heating-off target value.

15. Air conditioning system, characterized in that it comprises an air conditioning apparatus and a cooling device according to any one of claims 1 to 14,

the cooling device is connected with the air conditioning equipment,

and the refrigerant of the air conditioning equipment enters the cooling device, and the refrigerant after heat exchange with the heat generating component flows back into the air conditioning equipment from the cooling device.

16. The cooling device according to claim 15,

the inlet of the first flow path and the outlet of the second flow path are disposed in a common passage of the air conditioning equipment, and the common passage is a passage through which a refrigerant flows in both a cooling mode and a heating mode, and in which the refrigerant flows in the same direction in both the cooling mode and the heating mode.

17. A control method of a cooling apparatus, characterized in that the cooling apparatus comprises: a heat exchanger for cooling a heat generating component; the first flow path is connected with an inlet of the heat exchanger and used for conveying a refrigerant in air conditioning equipment to the heat exchanger; the second flow path is connected with an outlet of the heat exchanger and is used for conveying the refrigerant flowing out of the heat exchanger to the air conditioning equipment; the first adjusting valve assembly is arranged on the second flow path and used for adjusting the flow of the refrigerant flowing out of the heat exchanger; the first pressure sensor assembly is arranged on the second flow path, is positioned on the inlet side of the first regulating valve assembly and is used for detecting the pressure of the refrigerant flowing out of the heat exchanger; and a controller for controlling the operation of the display device,

the method comprises the following steps:

the controller controls the first regulator valve assembly according to a detection result of the first pressure sensor assembly in a first control mode.