Heat exchange assembly, refrigerant heat exchange system, refrigerant heat exchange method and vehicle

Abstract

The invention discloses a heat exchange assembly, a refrigerant heat exchange system, a refrigerant heat exchange method and a vehicle. The heat exchange assembly comprises a shell provided with an opening used for being connected with an external heat exchange system; the switch valve is arranged on the shell, and the switch valve can be in a first state or a second state; in a first state, the opening is closed by the switch valve; and in the second state, the opening is opened by the switching valve, and the opening is communicated with an external heat exchange system. The device is simple in structure and low in cost.

Description

Technical Field

[0001] The present application relates to the field of thermal control, and more specifically, to a heat exchange component, a refrigerant heat exchange system, a refrigerant heat exchange method and a vehicle. Background Art

[0002] In the prior art, there is a technology that uses the phase change of a refrigerant to cool a heat source such as a power module, but the structure used in the cooling process is highly complex, resulting in high costs. Summary of the invention

[0003] One object of the present application is to provide a new technical solution for a heat exchange component, a refrigerant heat exchange system, a refrigerant heat exchange method and a vehicle.

[0004] To achieve the above-mentioned purpose, according to the first aspect of the present application, a heat exchange component is provided, comprising: a shell having an opening, the opening being used to connect to an external heat exchange system; a switch valve, arranged in the shell, the switch valve being able to be in a first state or a second state; in the first state, the switch valve closes the opening; in the second state, the switch valve opens the opening, and the opening is connected to the external heat exchange system.

[0005] Optionally, the switch valve includes an elastic component, which is disposed on the shell. In a first state, the elastic component closes the opening; in a second state, the elastic component opens the opening, and the opening is connected to an external heat exchange system.

[0006] Optionally, the shell includes a sub-shell, the elastic component is arranged in the sub-shell; the opening includes a first opening and a second opening, the first opening is arranged in the shell, the second opening is arranged in the sub-shell, and the first opening is communicated with an external heat exchange system through the second opening;

[0007] In the first state, the elastic component closes the first opening, and in the second state, the elastic component opens the first opening so that the first opening is connected to the second opening; or in the first state, the elastic component closes the second opening, and in the second state, the elastic component opens the second opening so that the second opening is connected to the first opening.

[0008] Optionally, the elastic component has a main body and a notch, and the notch is connected to the second opening;

[0009] The elastic component can be in a first state or a second state; in the first state, the main body closes the first opening; in the second state, the main body opens the first opening, and the first opening, the notch, and the second opening are connected;

[0010] Alternatively, in a first state, the main body closes the second opening; in a second state, the main body opens the second opening, and the first opening, the notch, and the second opening are connected.

[0011] Optionally, the elastic component includes a pressing head and an elastic member. In a first state, the elastic member presses the pressing head against the first opening to close the first opening. In a second state, the pressing head overcomes the pressing force of the elastic member to open the first opening, and the first opening is connected to the second opening.

[0012] Optionally, the elastic component includes an elastic member and a piston; in a first state, the elastic member maintains the piston between the first opening and the second opening to close the first opening; in a second state, the piston is located between the second opening and the first bottom wall of the sub-shell to connect the first opening with the second opening.

[0013] Optionally, the elastic component includes a tube and an elastic member, the tube includes an open end, a second bottom wall and a tube wall, the open end is connected to the first opening, and the tube wall is axially provided with a plurality of third openings; in a first state, the elastic member maintains the second bottom wall between the first opening and the second opening to close the first opening; in a second state, the second bottom wall is located between the second opening and the first bottom wall of the sub-shell, so that at least one of the third openings is connected to the second opening.

[0014] Optionally, there are at least two third openings, one of which has an axial distance H1 from the second bottom wall and an opening area S1, and the other of which has an axial distance H2 from the second bottom wall and an opening area S2, wherein H1<H2, S1<S2.

[0015] According to a second aspect of the present application, a refrigerant heat exchange system is provided, comprising:

[0016] A heat exchange assembly as described above;

[0017] A compression pump connected to the heat exchange component;

[0018] A controller is configured to receive a power signal of a heat source that exchanges heat with the refrigerant in the heat exchange component, and control the power of the compression pump according to the power signal.

[0019] According to a third aspect of the present application, a refrigerant heat exchange method is provided, comprising:

[0020] Inputting a refrigerant into the heat exchange component, wherein the refrigerant is used to perform heat exchange with a heat source;

[0021] The inflow and outflow of the refrigerant in the heat exchange component are controlled so that the pressure in the heat exchange component is maintained within a target pressure range.

[0022] According to a fourth aspect of the present application, a vehicle is provided, the vehicle comprising the heat exchange component as described above, or comprising the refrigerant heat exchange system as described above, or using the refrigerant heat exchange method as described above to cool the heat source.

[0023] The heat exchange component of the present application can achieve pressure maintenance and pressure relief by using a shell and a switch valve. The switch valve is directly arranged on the shell of the heat exchange component, with a simple structure and low cost.

[0024] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0026] Figure 1 It is a structural schematic diagram of a refrigerant heat exchange system of an embodiment of the present application.

[0027] Figure 2 In the first embodiment of this application Figure 1 A partial enlarged view of portion A in which the elastic component is in a first state.

[0028] Figure 3 It is a schematic structural diagram of the elastic component of the first embodiment of the present application.

[0029] Figure 4 In the first embodiment of this application Figure 1 A partial enlarged view of part A in FIG, wherein the elastic component is in a second state;

[0030] Figure 5 In the second embodiment of this application Figure 1 A partial enlarged view of part A in FIG, wherein the elastic component is in a first state;

[0031] Figure 6 In the third embodiment of the present application Figure 1 A partial enlarged view of part A in FIG, wherein the elastic component is in a first state;

[0032] Figure 7 In the fourth embodiment of the present application Figure 1 A partial enlarged view of portion A in which the elastic component is in a first state.

[0033] Description of reference numerals:

[0034] 1. Compression pump; 2. Condenser; 3. Check valve; 4. Heat exchanger assembly; 401. Heat exchange wall; 402. Refrigerant inlet; 403. Opening; 5. Radiator; 6. Heat source; 7. Shell; 701. Subshell; 702. First opening; 703. Second opening; 704. Elastic assembly; 705. Main body; 706. Notch; 707. Edge of notch; 708. Edge of main body; 709. Side wall; 710. First bottom wall; 711. Pressure head; 712. Elastic member; 713. Piston; 714. Tube wall; 715. Opening end; 716. Second bottom wall; 717. Third opening; 8. Evaporator. DETAILED DESCRIPTION

[0035] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0036] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0037] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0038] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0039] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0040] like Figure 1 As shown, the heat exchange component in this embodiment is exemplarily applied to Figure 1 The refrigerant heat exchange system shown is used to describe its specific working process in conjunction with the refrigerant heat exchange system, but the heat exchange component can also be applied to other scenarios where the pressure needs to be maintained within a target range.

[0041] like Figures 1 to 7As shown, the heat exchange assembly 4 includes a housing 7 and a switch valve. The housing 7 has an opening, and the opening is used to connect with an external heat exchange system (such as an evaporator 8, a compression pump 1, etc.). The switch valve is arranged on the housing 7, and the switch valve can be in a first state or a second state; in the first state, the switch valve closes the opening 403; in the second state, the switch valve opens the opening 403, and the opening 403 is connected with the external heat exchange system.

[0042] More specifically, in the embodiments described below, a mechanical switch valve is used as an example, but the switch valve may also be a solenoid valve or a control valve of other structures. In the embodiment of the present application, the switch valve is directly set on the shell 7 of the heat exchange component 4, and the switch valve is used to close or open the opening 403 of the shell 7. This structure is equivalent to directly forming a control valve on the heat exchange component 4, which has a simple structure, low cost and compact layout. The switch valve can be electronic or mechanical.

[0043] like Figure 2 and Figure 4 As shown in the figure, the two figures schematically show the action process of the elastic component 704. The switch valve includes an elastic component 704, which is arranged on the housing 7. In the first state, the elastic component 704 closes the opening 403, and the opening 403 cannot be connected to the external heat exchange system; in the second state, the elastic component 704 opens the opening 403, and the opening 403 is connected to the external heat exchange system. Figure 2 and Figure 4 In the embodiment, the first opening 702 can be regarded as a part of the opening 403. The elastic component 704 is used to control the closing and opening of the opening 403, which has a simple structure, is easy to implement, and has low cost.

[0044] like Figure 2 , Figure 4 As shown, the shell 7 includes a sub-shell 701, and the elastic component 704 is arranged in the sub-shell 701. The sub-shell 701 can be pre-installed with the elastic component 704, and then installed on the shell 7 by welding, riveting, etc., which is convenient for assembly. Since the sub-shell 701 is fixed on the shell 7, it can be regarded as a part of the shell 7. The sub-shell 701 can also be integrally formed with the shell 7. The opening 403 includes a first opening 702 and a second opening 703. In this embodiment, the first opening 702 is arranged on the shell 7 of the heat exchange component 4, and the second opening 703 is arranged on the sub-shell 701. The first opening 702 is connected to the external heat exchange system through the second opening 703. Since the second opening 703 is an external pipeline, Figure 2 The second opening 703 is represented by a line.

[0045] exist Figure 2 and Figure 4In the embodiment shown, in the first state, the elastic component 704 closes the first opening 702, so that the opening 403 cannot communicate with the external heat exchange system; in the second state, the elastic component 704 opens the first opening 702, so that the first opening 702 communicates with the second opening 703, so that the opening 403 can communicate with the external heat exchange system. In other words, Figure 2 and Figure 4 In the embodiments shown, the opening and closing of the opening 403 are achieved by opening and closing the first opening 702 .

[0046] and Figure 2 and Figure 4 Conversely, in other embodiments, in the first state, the elastic component 704 closes the second opening 703, so that the opening 403 cannot communicate with the external heat exchange system; in the second state, the elastic component opens the second opening 703 to communicate with the first opening, so that the opening 403 can communicate with the external heat exchange system. In other words, by opening and closing the second opening 703, the opening and closing of the opening 403 can also be achieved.

[0047] like Figure 3 As shown, in the first embodiment, the elastic component 704 is in the form of a single spring. The elastic component 704 can be a spring with a certain curvature, and can be a cross-shaped spring or a triangular spring. The elastic component 704 itself can be deformed to enter the first state or the second state. In the first state, the first opening 702 is closed by the elastic component 704; in the second state, the first opening 702 is in an open state, and the first opening 702 is connected to the external heat exchange system.

[0048] like Figure 3 As shown, the elastic component 704 in this embodiment has a main body 705 and a notch 706, and the notch 706 is connected to the second opening 703. Figure 3 In the embodiment shown, a cross-shaped elastic component is used. When the elastic component 704 is a triangular elastic component, after the three vertices of the triangle are connected to the shell 701, the space formed by the three sides allowing the refrigerant to flow through can be regarded as the notch 706. Figure 3In the embodiment shown, the notch 706 is formed by cutting a portion of the edge of a whole elastic component 704. In other embodiments, the notch 706 can also be formed by drilling a hole on the elastic component 704. The elastic component 704 is a mechanical elastic component, which has a measurable elastic stress. The elastic component 704 can be elastically deformed under a certain pressure. The deformation pressure of the elastic component 704 can be adjusted by adjusting the parameters such as the selected elastic material and structure. The size of the elastic force can be elastically calibrated according to the size of the pressure required by the first opening 702 (that is, the target pressure range required inside the heat exchange component 4).

[0049] During installation, the main body 705 is deformed into an arc shape to close the first opening 702. At this time, the elastic component 704 is in a state as shown in FIG. Figure 2 In the first state shown, the refrigerant cannot enter the sub-shell 701 from the first opening 702, and cannot flow out of the heat exchange component 4 from the second opening 730; when the refrigerant pressure exceeds the target range, the refrigerant pressure can overcome the elastic force of the elastic component 704, causing the elastic component 704 to produce elastic deformation, and the elastic component 704 is in a state as shown in FIG. Figure 4 In the second state shown, in the second state, the main body 705 does not close the first opening 702, the first opening 702 is open, and the first opening 702, the notch 706, and the second opening 703 are connected. At this time, the refrigerant can flow out of the heat exchange component 4 through the first opening 702, the notch 706, and the second opening 703, and the internal pressure of the heat exchange component 4 is reduced until the refrigerant pressure drops to the target range, and the elastic component 704 returns to the first state. It can be seen that it is only necessary to set the deformation elastic force of the elastic component 704 to be equal to the target pressure. When the pressure in the heat exchange component 4 exceeds the target pressure, the elastic component 704 can be deformed to open the first opening 702, and when the pressure in the heat exchange component 4 is lower than the target pressure, the elastic component 704 can be restored to the state of closing the first opening 702.

[0050] As can be seen from the above description, the heat exchange component 4 only needs two components, the shell 7 and the elastic component 704, to achieve pressure maintenance and pressure relief, with a simple structure and low cost. The elastic component 704 can ensure that the refrigerant pressure can only push the elastic component 704 from the first state to the second state when it exceeds the target range by selecting elastic materials and designing the size of the elastic component 704, which will not be described in detail in this article.

[0051] In other embodiments, the elastic component 704 can also indirectly close or open the first opening 702 by closing or opening the second opening 703. For example, the elastic component 704 has a main body 705 and a notch 706, and the notch 706 is connected to the first opening 702;

[0052] The elastic component 704 can be in a first state or a second state; in the first state, the main body 705 closes the second opening 703; in the second state, the main body 705 does not close the second opening 703, the second opening 703 is open, and the first opening 702, the notch 706, and the second opening 703 are connected.

[0053] like Figure 3 As shown, there are four notches 706 and they are evenly arranged along the edge 707 of the main body 705, or in other words, the four notches 706 are located at the four corners of the main body 705. The advantage of this structure is that it can ensure that the refrigerant flows evenly and smoothly through the notches 706, and can also make the deformation of the elastic component 704 more uniform, preventing the uneven amount of refrigerant flowing out through each notch 706 from causing turbulence. The specific number of notches 706 can be increased or decreased according to actual needs, and is not limited to four.

[0054] like Figure 3 As shown, the edge 707 of the notch 706 is continuous with the edge 708 of the main body 705, and the edge 708 of the main body 705 between two adjacent notches 706 is connected to the sub-shell 701. The advantage of this structure is that the notch 706 is easy to cut, and after installation, it is easy for the elastic component 704 to deform near the edge 708 of the main body 705, and the main body 705 is as close to the first opening 702 as possible. The elastic component 704 can seal the first opening 702 more tightly after returning to the first state. More specifically, in Figure 3 In the embodiment, the edge 708 of the main body 705 abuts against the first bottom wall 710 of the sub-housing 701, and the installation is simple. In practical applications, the edge 708 of the main body 705 can also be fixed to other side walls by welding or the like.

[0055] like Figure 2 and Figure 4 As shown, the first opening 702 is located on the side wall 709 of the housing 7, and the second opening 703 is located on the first bottom wall 710 of the sub-housing 701. The side wall 709 and the first bottom wall 710 are two opposite side walls of the housing 7, and the first opening 702 is opposite to the second opening 703. The advantage of this structure is that the outflow of the refrigerant is smoother.

[0056] In this embodiment, the notch 706 is located outside the orthographic projection of the first opening 702 toward the first bottom wall 710, and / or, the notch 706 is located outside the orthographic projection of the second opening 703 toward the side wall 709. The advantage of this structure is that the pressure of the refrigerant can be concentrated on the main body 705, so that the elastic component 704 can enter the second state from the first state more accurately, and no accidental leakage will occur in the notch 706. Further, since the edge 707 of the main body is connected to the first bottom wall 710, in the second state, after the refrigerant enters the shell 701 through the first opening 702, a buffer will be generated in the space between the curved surface of the main body 705 and the sub-shell 701, and then it will reach the second opening 703 at the first bottom wall 710, making full use of the buffering effect of the curved surface of the elastic component 704 and the internal space of the shell, and avoiding the elastic component 704 from drastic deformation and plastic deformation.

[0057] like Figure 5 As shown, in the second embodiment of the present application, the elastic component 704 includes a pressure head 711 and an elastic member 712, and the pressure head 711 and the elastic member 712 are arranged on the shell 7. In the first state, the elastic member 712 presses the pressure head 711 against the first opening 702 to close the first opening 702; in the second state, the pressure head 711 overcomes the pressing force of the elastic member 712 to open the first opening 702, and the first opening 702 is connected to the second opening 703, and thus connected to the external heat exchange system.

[0058] In this embodiment, the elastic component 704 requires two parts, namely the elastic member 712 and the pressure head 711 . However, the elastic force of the elastic member 712 is easier to measure, so it is easier to maintain the pressure inside the heat exchange component 4 within the target range after installation.

[0059] like Figure 6As shown, in the third embodiment of the present application, the elastic component 704 includes an elastic member 712 and a piston 713. In this embodiment, the second opening 703 is not opened on the first bottom wall 710, but is opened on a side wall of the sub-shell 701. The piston 713 is located in the pipe, and the elastic member 712 is located between the first bottom wall 710 of the sub-shell 701 and the piston 713; in the first state, the pressure in the heat exchange component 4 does not exceed the target range, and the piston 713 is maintained between the first opening 702 and the second opening 703 under the elastic force of the elastic member 712, so the first opening 702 is closed; in the second state, the pressure in the heat exchange component 4 exceeds the target range, and the refrigerant pushes the piston 713 to overcome the elastic force of the elastic member 712, and the piston 713 is located between the second opening 703 and the first bottom wall 710, so the first opening 702 is connected with the second opening 703, and accordingly the first opening 702 is in an open state, and the first opening 702 can be connected with the external heat exchange system through the second opening 703.

[0060] like Figure 7 As shown, in the fourth embodiment of the present application, the elastic component 704 includes a tube and an elastic member 712, the tube includes an open end 715, a second bottom wall 716 and a tube wall 714, the tube is located in the sub-shell 701, the open end 715 is connected to the first opening 702, and the elastic member 712 is located between the first bottom wall 710 and the second bottom wall 716. The tube wall 714 is provided with a plurality of third openings 717 along the axial direction of the tube, and the third openings 717 are connected to the open end 715 and are therefore connected to the first opening 702. The third openings 717 are used for the refrigerant in the heat exchange component 4 to flow out. In the first state, the elastic member 712 keeps the second bottom wall 716 between the first opening 702 and the second opening 703, thereby closing the first opening 702; in the second state, the second bottom wall 716 is located between the second opening 703 and the first bottom wall 710, so that at least one of the third openings 717 is connected to the second opening 703, so that the first opening 702 is opened.

[0061] In this embodiment, if the refrigerant pressure in the heat exchange assembly 4 is within the target range, the elastic assembly 704 is in the first state under the support of the elastic force of the elastic member 712. When the refrigerant pressure exceeds the target range, the pressure on the second bottom wall 716 increases, and the pipe overcomes the elastic force of the elastic member 712, so that the elastic assembly 704 enters the second state. In this embodiment, "multiple" refers to at least two. More specifically, Figure 7, three third openings 717 are shown, and are marked as 717A, 717B and 717C in order from near to far from the second bottom wall 716. The advantage of opening multiple third openings 717 is that the greater the pressure in the heat exchange assembly 4, the more (or larger) the number of third openings 717 connected to the second opening 703 can be, and the pressure relief is faster.

[0062] like Figure 7 As shown, in the axial direction of the pipe fitting, among the plurality of third openings 717, taking two of the third openings as an example, one of the third openings is marked as 717A, and the other third opening is marked as 717B. The axial distance between the third opening 717A and the second bottom wall 716 is H1, and the opening area is S1. The axial distance between the other third opening 717B and the second bottom wall 716 is H2, and the opening area is S2. In this embodiment, H1<H2, S1<S2. In other words, if the two third openings 717A and 717B are compared, the closer the third opening 717 is to the second bottom wall 716, the smaller its opening area. The advantage of this structure is that the greater the pressure in the heat exchange component 4, the closer the second bottom wall 717 is to the first bottom wall 710, and the correspondingly larger the opening area of ​​the third opening 717 connected to the second opening 703, the larger the outflow of the refrigerant, and the more accurate the pressure regulation.

[0063] like Figures 1 to 7 As shown, the refrigerant heat exchange system heat exchange component 4. The heat exchange component 4 has a refrigerant inlet 402 and a refrigerant outlet (i.e., an opening 403), and the heat exchange wall 401 of the heat exchange component 4 is used to exchange heat with the heat source 6, so that the heat source 6 (e.g., a power module) can exchange heat with the refrigerant in the heat exchange component 4 and be cooled.

[0064] During operation, the liquid refrigerant enters the heat exchange component 4 through the refrigerant inlet 402. After the heat source 6 exchanges heat with the refrigerant, the refrigerant expands and vaporizes in the heat exchange component 4. The volume of the liquid refrigerant expands in the heat exchange component 4, the local pressure increases, and the corresponding refrigerant vaporization temperature also increases. However, in order to make the heat exchange component 4 have a constant pressure characteristic and thus maintain a stable vaporization temperature, it is necessary to maintain the pressure in the heat exchange component 4 within a stable target range, and the switch valve of the heat exchange component 4 can play a role at this time. Taking the switch valve in the first embodiment as an example, when the pressure in the heat exchange component 4 is within the target range, the elastic component 704 is in the first state, the first opening 702 is closed, and the refrigerant cannot flow out through the opening 403. When the pressure in the heat exchange component 4 exceeds the target range, the elastic component 704 enters the second state, the first opening 702 is opened, and the refrigerant can flow out through the opening 403, and the pressure in the heat exchange component 4 decreases until it returns to the target range. Therefore, by deforming the elastic component 704, the opening and closing of the opening 403 can be controlled, thereby achieving the pressure maintenance and pressure relief of the heat exchange component 4, with a simple structure and low cost. For example, the target range of the constant pressure evaporation pressure of the refrigerant is set to 600kPa±2kPa. If the amount of refrigerant introduced is too much or the refrigerant evaporates, causing the pressure in the heat exchange component 4 to increase, the elastic component 704 will be squeezed to the second state, and the passage between the first opening 702 and the second opening 703 will be opened to relieve pressure, thereby maintaining a constant pressure in the heat exchange component 4. If the amount of refrigerant introduced into the heat exchange component 4 is too little, the pressure in the heat exchange component 4 is low, and the elastic component 704 returns to the first state to maintain the evaporation pressure in the heat exchange component 4.

[0065] like Figure 1 As shown, in this embodiment, the side wall 709 where the first opening 702 is located is a side wall of the heat exchange component 4, and the first opening 702 and the opening 403 can be regarded as the same opening.

[0066] like Figure 1 As shown, a radiator 5 is provided inside the heat exchange component 4, and the radiator 5 is connected to the heat exchange wall 401 of the heat exchange component 4 by welding, riveting, etc. The radiator 5 and the heat exchange wall 401 are both made of metal materials with high thermal conductivity, such as copper, aluminum or alloy. After the heat source 6 is attached to the heat exchange wall 401, a faster heat exchange efficiency can be achieved with the refrigerant in the heat exchange component 4 through the radiator 5.

[0067] like Figure 1As shown, a compression pump 1 is arranged between the refrigerant inlet 402 and the second opening 703 outside the heat exchange component 4, and the compression pump 1 is connected to the heat exchange component 4. The refrigerant heat exchange system also includes a controller (not shown), which is configured to receive a power signal of the heat source 6, and the refrigerant in the heat exchange component 4 performs heat exchange with the heat source 6. The power of the heat source 6 represents its heating power, which can be characterized by its current or voltage. The controller can receive the current value or voltage value signal of the heat source 6 to characterize the received power signal, and then control the power of the compression pump 1 according to the power signal, so that the power of the heat source 6 is positively correlated with the power of the compression pump 1, that is, the higher the power of the heat source 6, the greater the power of the compression pump 1, and the greater the amount of refrigerant pumped into the heat exchange component 4 per unit time. Therefore, in the refrigerant heat exchange system of this embodiment, the control of the constant temperature phase change process of the refrigerant becomes very simple. Since the switch valve ensures that the pressure in the heat exchange component 4 is within the target range, the refrigerant flow rate entering the heat exchange component 4 only depends on the output power of the heat source 6. The inflow of refrigerant corresponds to the heat consumption of the heat source 6 itself. The output power of the heat source 6 is fed back to the compression pump 1 to control the refrigerant flow rate. Therefore, the inflow of refrigerant only needs to be adjusted according to the output power of the heat source, that is, the power (or speed) of the compression pump 1 only needs to be positively correlated with the power of the heat source 6, and the adjustment process is simple.

[0068] like Figure 1 As shown, a check valve 3 is provided between the compression pump 1 and the heat exchange component 4, and the check valve 3 only allows the refrigerant to flow from the compression pump 1 into the heat exchange component 4. Since the pressure in the heat exchange component 4 needs to be maintained within the target range, and the adjustment of the compression pump 1 requires a process, adding the check valve 3 before the refrigerant enters the heat exchange component 4 can ensure that the adjustment process of the compression pump 1 will not interfere with the pressure stability in the heat exchange component 4.

[0069] In this embodiment, a condenser 2 is provided between the compression pump 1 and the check valve 3. The condenser 2 is used to liquefy the gaseous refrigerant.

[0070] In this embodiment, an evaporator 8 is provided between the second opening 703 of the housing 7 and the compression pump 1, and the refrigerant flows out of the second opening 703 and flows into the compression pump 1 through the evaporator 8. Since the refrigerant discharged from the housing 4 may be a gas-liquid mixture or a gas, adding the evaporator 8 can increase the superheat of the refrigerant, and then enter the compression pump 1 to enter the next cycle.

[0071] In such Figure 1 In the system shown, the condenser 2 and the evaporator 8 are both separately provided. In actual application, the refrigerant of the heat pump system of the vehicle can also be utilized. A bypass is connected in the heat pump system, and the refrigerant in the heat pump system enters the heat exchange component 4. At this time, the condenser 2 and the evaporator 8 can be shared with the heat pump system.

[0072] Next, combine Figures 1 to 4 Describe the working principle of the entire refrigerant heat exchange system:

[0073] First, it is necessary to select the type of refrigerant according to the required temperature of the heat source 6, and then determine the pressure value of the refrigerant at the phase change temperature (i.e., the required temperature), which is also the critical pressure value of the elastic component 704 from the first state to the second state. Assuming that the heat source 6 requires a maximum temperature of 80°C, the internal radiator temperature is calculated to be 50°C. At this time, the refrigerant temperature in the heat exchange component 4 should not be higher than 40°C. Assuming that R134a working fluid is used, the evaporation pressure is 1MPa at 40°C, then the critical pressure value of the elastic component 704 is adjusted to 1MPa, and the physical parameters of the elastic component 704 are no longer changed. The refrigerant inflow is changed by calculating the load of the heat source 6, and changes with the load power. The increase in the load power of the heat source 6 increases the refrigerant inflow in the heat exchange component 4. In normal operation, the compression pump 1 injects refrigerant into the heat exchange component 4, and the refrigerant becomes a high-pressure liquid medium after passing through the condenser 2, and enters the box through the check valve 3. The heat source 6 exchanges heat with the refrigerant in the heat exchange component 4. During this process, due to the action of the switch valve, the pressure in the heat exchange component 4 is always maintained within the target range of 1MPa, so R134a will always evaporate at 40°C. If the pressure in the heat exchange component 4 is higher than 1MPa, the elastic component 704 in the heat exchange component will enter the second state to release pressure, and part of the refrigerant will flow back to the compression pump 1 through the second opening 703 and the evaporator 5.

[0074] Figures 5 to 7 The pressure regulation principle of the elastic component in is similar to the process in the first embodiment, so it will not be described again.

[0075] From the above description, it can be seen that the refrigerant heat exchange system in the present application can keep the heat exchange component 4 within a target pressure range, so that the refrigerant in the heat exchange component 4 can always evaporate at a constant temperature. If a general pressure valve is used to replace the heat exchange component, the pressure in the box 4 can also be kept constant, but the structure will be more complicated.

[0076] From the above description, a refrigerant heat exchange method can be abstracted, including:

[0077] A refrigerant is input into the heat exchange component 4, and the refrigerant is used to perform heat exchange with the heat source 6;

[0078] The inflow and outflow of the refrigerant in the heat exchange component 4 are controlled so that the pressure in the heat exchange component 4 is maintained within the target pressure range.

[0079] In this way, it can be ensured that during the heat exchange between the refrigerant in the heat exchange component 4 and the heat source 6 , the refrigerant always evaporates at a constant temperature, thereby meeting the cooling demand of the heat source 6 .

[0080] The present application also discloses a vehicle, which includes the heat exchange assembly 4 as described above, or includes the refrigerant heat exchange system as described above, or uses the refrigerant heat exchange method as described above to cool the heat source 6. The refrigerant heat exchange system can be used as a bypass of the vehicle's heat pump system or battery cooling system.

[0081] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0082] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A heat exchange component, characterized in that: include: A shell (7), wherein the shell (7) has an opening, and the opening is used to connect to an external heat exchange system; A switch valve, arranged on the housing (7), the switch valve being able to be in a first state or a second state; In a first state, the switch valve closes the opening; in a second state, the switch valve opens the opening, and the opening is connected to an external heat exchange system.

2. The heat exchange assembly according to claim 1, characterized in that: The switch valve comprises an elastic component (704), wherein the elastic component (704) is arranged on the shell (7), and in a first state, the elastic component closes the opening; in a second state, the elastic component opens the opening, and the opening is connected to an external heat exchange system.

3. The heat exchange assembly according to claim 2, characterized in that: The shell (7) comprises a sub-shell (701), and the elastic component (704) is arranged in the sub-shell (701); the opening comprises a first opening (702) and a second opening (703), the first opening (702) is arranged in the shell (7), the second opening (703) is arranged in the sub-shell (701), and the first opening (702) is connected to an external heat exchange system through the second opening (703); In a first state, the elastic component (704) closes the first opening (702), and in a second state, the elastic component (704) opens the first opening (702) so that the first opening is connected to the second opening; or In a first state, the elastic component closes the second opening (703), and in a second state, the elastic component opens the second opening (703) so that the second opening is connected to the first opening.

4. The heat exchange assembly according to claim 3, characterized in that: The elastic component (704) comprises a main body (705) and a notch (706), and the notch (706) is in communication with the second opening (703); The elastic component (704) can be in a first state or a second state; In a first state, the main body (705) closes the first opening (702); In the second state, the main body (705) opens the first opening (702), and the first opening (702), the notch (706), and the second opening (703) are connected; Alternatively, in a first state, the main body (705) closes the second opening (703); in a second state, the main body (705) opens the second opening (703), and the first opening (702), the notch (706), and the second opening (703) are connected.

5. The heat exchange assembly according to claim 3, characterized in that: The elastic component (704) comprises a pressing head (711) and an elastic member (712); in a first state, the elastic member (712) presses the pressing head (711) against the first opening (702), so that the first opening is closed; in a second state, the pressing head (711) overcomes the pressing force of the elastic member (712), so that the first opening is opened, and the first opening (702) is connected to the second opening.

6. The heat exchange assembly according to claim 3, characterized in that: The elastic component includes an elastic member (712) and a piston (713); in a first state, the elastic member (712) maintains the piston (713) between the first opening (702) and the second opening (703) to close the first opening (702); in a second state, the piston (713) is located between the second opening (703) and the first bottom wall (710) of the sub-shell (701) to connect the first opening (702) with the second opening (703).

7. The heat exchange assembly according to claim 3, characterized in that: The elastic component comprises a tube and an elastic member (712), the tube comprising an open end (715), a second bottom wall (716) and a tube wall (714), the open end (715) being connected to the first opening (702), and the tube wall (714) being provided with a plurality of third openings (717) along the axial direction; in a first state, the elastic member (712) holds the second bottom wall (716) between the first opening (702) and the second opening (703) to close the first opening (702); in a second state, the second bottom wall (716) is located between the second opening (703) and the first bottom wall (710) of the sub-shell (701), so that at least one of the third openings (717) is connected to the second opening (703).

8. The heat exchange assembly according to claim 7, characterized in that: There are at least two third openings (717), one of which has an axial distance H1 from the second bottom wall (716) and an opening area S1, and the other third opening (717B) has an axial distance H2 from the second bottom wall (716) and an opening area S2, wherein H1<H2, S1<S2.

9. A refrigerant heat exchange system, characterized in that: include: The heat exchange assembly according to any one of claims 1 to 9; A compression pump (1), the compression pump being connected to the heat exchange component; A controller is configured to receive a power signal of a heat source (6) for performing heat exchange with the refrigerant in the heat exchange component, and to control the power of the compression pump (1) according to the power signal.

10. A refrigerant heat exchange method, characterized in that: include: Inputting a refrigerant into the heat exchange component, wherein the refrigerant is used to perform heat exchange with a heat source (6); The inflow and outflow of the refrigerant in the heat exchange component are controlled so that the pressure in the heat exchange component is maintained within a target pressure range.

11. A vehicle, characterized in that: The vehicle includes the heat exchange component as described in any one of claims 1 to 8, or includes the refrigerant heat exchange system as described in claim 9, or uses the refrigerant heat exchange method as described in claim 10 to cool the heat source.

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