Evaporator and refrigeration apparatus

Abstract

The utility model provides a kind of evaporator and refrigeration equipment, evaporator includes heat exchange pipeline, refrigerant input pipeline and valve assembly, heat exchange pipeline includes a plurality of sequentially connected heat exchange branch, in the flow direction of refrigerant, terminal heat exchange branch is connected with refrigerant outlet, refrigerant input pipeline includes the main pipeline for refrigerant input and the parallel connection of a plurality of branch pipeline, each branch pipeline and each heat exchange branch are connected one by one, valve assembly is set on heat exchange pipeline and refrigerant input pipeline, for making each heat exchange branch and / or each branch pipeline selectively work. According to the heat exchange requirement switching different valve combination, each heat exchange branch can be selectively used, so that the effective area participating in heat exchange can be dynamically adjusted;According to the refrigeration requirement switching different valve combination, respectively correspond to the communication of different branch pipeline and heat exchange branch, change refrigerant flow, break through the limitation that traditional evaporator can only adjust flow by compressor.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration technology, and more specifically, relates to an evaporator and refrigeration equipment. Background Technology

[0002] In refrigeration equipment, the heat exchange area of ​​traditional evaporators is fixed, and the cooling capacity is controlled only by adjusting the refrigerant flow rate (such as electronic expansion valves or capillary tubes). However, due to the limited heat transfer capacity of the fixed area, the range of cooling capacity adjustment is narrow. Moreover, the refrigerant flow rate is adjusted by changing the compressor speed, which not only results in high energy consumption, but also may not meet the requirements for heat exchange area and refrigerant flow rate. Utility Model Content

[0003] The purpose of this utility model embodiment is to provide an evaporator and refrigeration equipment to solve the technical problems of fixed heat exchange area and limited ability of compressor to adjust refrigerant flow in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide an evaporator, comprising: The heat exchange pipeline includes multiple heat exchange branches connected in sequence, and in the direction of refrigerant flow, the heat exchange branch at the end is connected to the refrigerant outlet. The refrigerant inlet pipeline includes a main pipeline for the refrigerant inlet and multiple branch pipelines connected in parallel, with each branch pipeline corresponding to each heat exchange branch; A valve assembly, disposed on the heat exchange pipeline and the refrigerant input pipeline, is used to selectively operate each of the heat exchange branches and / or each of the sub-pipelines.

[0005] Optionally, the valve assembly includes a first control valve that connects two adjacent heat exchange branches and is used to control the connection and closure between the two adjacent heat exchange branches.

[0006] Optionally, the valve assembly further includes a second control valve, which connects the branch pipe and the corresponding heat exchange branch, and is used to control the connection and closure between the branch pipe and the corresponding heat exchange branch.

[0007] Optionally, the valve assembly further includes a check valve disposed between two adjacent branch lines, the check valve being used to prevent refrigerant from flowing backward.

[0008] Optionally, the valve assembly further includes a flow regulating valve disposed on the branch line.

[0009] Optionally, the first control valve and the second control valve are integrated between the branch pipeline and the corresponding heat exchange branch.

[0010] Optionally, the number of heat exchange branches is three, namely a first heat exchange branch, a second heat exchange branch, and a third heat exchange branch. The first heat exchange branch is connected to the refrigerant outlet. The first control valve between the first heat exchange branch and the second heat exchange branch is a second valve, and the first control valve between the second heat exchange branch and the third heat exchange branch is a fourth valve. The number of branch pipes is three, namely a first branch pipe, a second branch pipe, and a third branch pipe. The second control valve between the first branch pipe and the first heat exchange branch is a first valve, and the second control valve between the second branch pipe and the second heat exchange branch is a third valve. The third branch pipe and the third heat exchange branch are directly connected.

[0011] Optionally, the first valve is open, and the second, third, and fourth valves are closed, thus activating the first heat exchange branch; or... The second and third valves are open, the first and fourth valves are closed, and the first and second heat exchange branches are operational; or... The second valve and the fourth valve are opened, the first valve and the third valve are closed, and the first heat exchange branch, the second heat exchange branch and the third heat exchange branch are in operation.

[0012] Optionally, the second valve and the fourth valve are open, the first valve and the third valve are closed, and the third branch pipeline is operational; or, When the second valve, the third valve, and the fourth valve are open, and the first valve is closed, the second branch pipeline and the third branch pipeline are operational; or, The first valve, the second valve, and the third valve are open, the fourth valve is closed, and the first branch pipeline and the second branch pipeline are operational; or... When the first valve, the second valve, the third valve, and the fourth valve are opened, the first branch pipeline, the second branch pipeline, and the third branch pipeline are operational.

[0013] This utility model also provides a refrigeration device, including the evaporator described above.

[0014] The beneficial effects of the evaporator and refrigeration equipment provided by this utility model are as follows: Compared with the prior art, the evaporator of this utility model includes heat exchange pipelines, refrigerant inlet pipelines, and valve assemblies. The heat exchange pipelines include multiple heat exchange branches connected in sequence. The refrigerant inlet pipelines include a main pipeline and multiple branch pipelines, with each branch pipeline corresponding to and connected to each heat exchange branch. The valve assemblies are installed on the heat exchange pipelines and the refrigerant inlet pipelines. By switching different valve combinations according to heat exchange requirements, each heat exchange branch can be selectively used, thereby dynamically adjusting the effective area participating in heat exchange. By switching different valve combinations according to refrigeration requirements, different branch pipelines and heat exchange branches are connected respectively, changing the refrigerant flow rate, breaking through the limitation of traditional evaporators that can only adjust the flow rate through the compressor. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the structure of the evaporator provided in an embodiment of this utility model; Figure 2 A schematic diagram of an evaporator provided in an embodiment of the present invention under a low cooling capacity demand mode; Figure 3 A schematic diagram of an evaporator provided in an embodiment of the present invention under a medium cooling capacity demand mode; Figure 4 A schematic diagram of an evaporator provided in an embodiment of the present invention under a high cooling capacity demand mode; Figure 5 A schematic diagram of the evaporator provided in the embodiment of this utility model under low flow demand mode; Figure 6 A schematic diagram of the evaporator provided in this embodiment of the present invention under medium flow rate demand mode. Figure 1 ; Figure 7 A schematic diagram of the evaporator provided in this embodiment of the present invention under medium flow rate demand mode. Figure 2 ; Figure 8 This is a schematic diagram of an evaporator provided in a high flow rate demand mode according to an embodiment of the present invention.

[0017] The following are the labeling elements in the figure: 1-Heat exchange pipeline; 10-Heat exchange branch; 11-First heat exchange branch; 12-Second heat exchange branch; 13-Third heat exchange branch; 20-Refrigerant inlet pipeline; 21-Main pipeline; 22-Branch pipeline; 221-First branch pipeline; 222-Second branch pipeline; 223-Third branch pipeline; 30-Valve assembly; 31-First control valve; 311-Second valve; 312-Fourth valve; 32-Second control valve; 321-First valve; 322-Third valve; 33-Check valve. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] As described in the background section, in refrigeration equipment, the heat exchange area of ​​a traditional evaporator is fixed, and the cooling capacity is controlled only by adjusting the refrigerant flow rate (such as an electronic expansion valve or capillary tube). However, due to the limited heat transfer capacity of the fixed area, the cooling capacity adjustment range is narrow. Furthermore, the refrigerant flow rate is adjusted by changing the compressor speed, which not only results in high energy consumption but also may not meet the requirements for the heat exchange area of ​​the heat exchanger and the refrigerant flow rate. Especially in deep-freeze refrigerators, users may frequently switch between deep-freeze and cold-freeze modes, which undoubtedly requires the compressor to have a larger cooling capacity adjustment range.

[0023] To alleviate or solve the above technical problems, this utility model proposes a new evaporator and refrigeration equipment. The evaporator includes a heat exchange pipeline 1, a refrigerant inlet pipeline 20, and a valve assembly 30. The heat exchange pipeline 1 includes multiple heat exchange branches 10 connected in sequence. The refrigerant inlet pipeline 20 includes a main pipeline 21 and various branch pipelines 22. Each heat exchange branch pipeline 10 and each branch pipeline 22 are connected accordingly. Refrigerant is input through the main pipeline 21 and output through the terminal heat exchange branches 10. According to different cooling capacity and different flow rate requirements, the valve assembly 30 can be adjusted to selectively start each heat exchange pipeline 1 and / or each branch pipeline 22 to meet the user's various cooling capacity and flow rate requirements.

[0024] The evaporator provided in this embodiment of the present invention will now be described. The evaporator is one of the core components in refrigeration equipment. Low-temperature refrigerant passes through the evaporator and exchanges heat with the outside air. The refrigerant vaporizes and absorbs heat to achieve the cooling effect.

[0025] Please see Figure 1 and Figure 2 The evaporator includes: The heat exchange pipeline 1 includes multiple heat exchange branches 10 connected in sequence. In the direction of refrigerant flow, the heat exchange branch 10 at the end is connected to the refrigerant outlet. The refrigerant inlet pipeline 20 includes a main pipeline 21 for refrigerant inlet and multiple branch pipelines 22 connected in parallel, with each branch pipeline 22 corresponding to each heat exchange branch 10. The valve assembly 30 is disposed on the heat exchange pipeline 1 and the refrigerant inlet pipeline 20, and is used to selectively operate each heat exchange branch 10 and / or each sub-pipeline 22.

[0026] Heat exchange pipe 1 is a component that exchanges heat with the outside air. Refrigerant flows within heat exchange pipe 1. In the direction of refrigerant flow, the upstream heat exchange branch 10 is the initial heat exchange branch 10, and the downstream heat exchange branch 10 is the final heat exchange branch 10. Therefore, the refrigerant flows out from the refrigerant outlet after passing through the final heat exchange branch 10. Multiple sequentially connected heat exchange branches 10 refer to the interconnection of the outlet and inlet ends of adjacent heat exchange branches 10.

[0027] The refrigerant inlet pipe 20 is used to input refrigerant into the heat exchange pipe 1. One end of the main pipe 21 is connected to the refrigerant inlet, and the other end of the main pipe 21 is connected to multiple branch pipes 22. The other end of the branch pipes 22 is connected to each heat exchange branch 10 in a corresponding manner.

[0028] Valve assembly 30 is installed on heat exchange pipeline 1 and refrigerant inlet pipeline 20. This means that each valve in valve assembly 30 can be installed at the connection points of heat exchange pipeline 1, refrigerant pipeline, and / or heat exchange pipeline 1 and refrigerant inlet pipeline 20. Selective operation of each heat exchange branch 10 and / or each sub-pipeline 22 means that some or all of the heat exchange branch 10 is operational, and / or some or all of the pipelines 22 are operational. Specifically, operation of heat exchange branch 10 means that the heat exchange branch 10 participates in heat exchange. Operation of sub-pipeline 22 means that refrigerant flows in the sub-pipeline 22.

[0029] When different refrigerant cooling capacities or flow rates are required at the user end, the valve assembly 30 can be adjusted to activate the corresponding heat exchange branch 10 and branch pipe 22 to meet the user's needs.

[0030] The evaporator in the above embodiment includes a heat exchange pipeline 1, a refrigerant inlet pipeline 20, and a valve assembly 30. The heat exchange pipeline 1 includes multiple heat exchange branches 10 connected in sequence. The refrigerant inlet pipeline 20 includes a main pipeline 21 and multiple branch pipelines 22, with each branch pipeline 22 corresponding to a heat exchange branch 10. The valve assembly 30 is disposed on the heat exchange pipeline 1 and the refrigerant inlet pipeline 20. By switching different valve combinations according to heat exchange requirements, each heat exchange branch 10 can be selectively used, thereby dynamically adjusting the effective area participating in heat exchange. By switching different valve combinations according to cooling requirements, different branch pipelines 22 and heat exchange branches 10 are connected respectively, changing the refrigerant flow rate, breaking through the limitation of traditional evaporators that can only adjust the flow rate through the compressor.

[0031] Please refer to some embodiments of this utility model. Figure 1 The valve assembly 30 includes a first control valve 31, which connects two adjacent heat exchange branches 10 and controls the connection and closure between them. A first control valve 31 is provided between any two adjacent heat exchange branches 10. When the first control valve 31 between two adjacent heat exchange branches 10 is closed, the refrigerant in the upstream heat exchange branch 10 cannot flow to the downstream heat exchange branch 10. Therefore, by opening or closing the first control valve 31 at different locations, different numbers of heat exchange branches 10 can participate in heat exchange.

[0032] A first control valve 31 is set between two adjacent heat exchange branches 10. The number of heat exchange branches 10 participating in heat exchange can be controlled by opening and closing each first control valve 31, so that the refrigeration equipment can switch between high cooling capacity mode and medium and low cooling capacity mode.

[0033] Please refer to some embodiments of this utility model. Figure 1 Each heat exchange branch 10 has the same effective heat exchange area, and the cooling capacity is adjusted only by changing the number of heat exchange branches 10 participating in heat exchange.

[0034] In some embodiments of the utility model, the effective heat exchange area of ​​each heat exchange branch 10 is different. Therefore, different heat exchange branches 10 can be used to participate in heat exchange to adjust the level of cooling capacity.

[0035] Please refer to some embodiments of this utility model. Figure 1 The valve assembly 30 further includes a second control valve 32, which connects the branch pipe 22 and the corresponding heat exchange branch 10, and is used to control the connection and closure between the branch pipe 22 and the corresponding heat exchange branch 10. When the second control valve 32 is closed, the corresponding branch pipe 22 and the heat exchange branch 10 are in a closed state. The second control valve 32 can be installed between some of the branch pipes 22 and their corresponding heat exchange branches 10, or it can be installed between all the branch pipes 22 and their corresponding heat exchange branches 10.

[0036] A second control valve 32 is installed between the branch pipe 22 and the corresponding heat exchange branch 10, which can control the connection and closure between each branch pipe 22 and the corresponding heat exchange branch 10, thereby adjusting the refrigerant flow of the evaporator.

[0037] Please refer to some embodiments of this utility model. Figure 1 The valve assembly 30 also includes a check valve 33 disposed between two adjacent branch pipes 22, which is used to prevent refrigerant from flowing back. In this evaporator, the refrigerant flow direction is always consistent, therefore, the check valve 33 can prevent refrigerant from flowing back in the corresponding branch pipe 22.

[0038] In some embodiments of this utility model, the valve assembly 30 further includes flow regulating valves disposed on each branch pipe 22. The flow regulating valves are used to regulate the flow rate through the branch pipe 22. By setting the flow regulating valves, the refrigerant flow rate of the evaporator can be adjusted by a small amount. In conjunction with the second control valve 32, the adjustment accuracy of the refrigerant flow rate can be improved.

[0039] Optionally, each branch pipe 22 is equipped with a flow regulating valve. Alternatively, some branch pipes 22 are equipped with flow regulating valves.

[0040] Please refer to some embodiments of this utility model. Figure 1 Between the branch pipe 22 and the corresponding heat exchange branch 10, the first control valve 31 and the second control valve 32 are integrated. The branch pipe 22 and the corresponding heat exchange branch 10 have one first control valve 31 and one second control valve 32, which are integrated into a single structure. This simplifies the installation steps of the various components of the evaporator and the piping wiring steps, thus reducing the installation difficulty.

[0041] Please refer to some embodiments of this utility model. Figure 1 There are three heat exchange branches 10: a first heat exchange branch 11, a second heat exchange branch 12, and a third heat exchange branch 13. The first heat exchange branch 11 is connected to the refrigerant outlet. The first control valve 31 between the first heat exchange branch 11 and the second heat exchange branch 12 is the second valve 311, and the first control valve 31 between the second heat exchange branch 12 and the third heat exchange branch 13 is the fourth valve 312. There are three branch pipes 22: a first branch pipe 221, a second branch pipe 222, and a third branch pipe 223. The second control valve 32 between the first branch pipe 221 and the first heat exchange branch 11 is the first valve 321, and the second control valve 32 between the second branch pipe 222 and the second heat exchange branch 12 is the third valve 322. The third branch pipe 223 and the third heat exchange branch 13 are directly connected. The first heat exchange branch 11, the second heat exchange branch 12, and the third heat exchange branch 13 are connected sequentially. The refrigerant flows sequentially through the third heat exchange branch 13, the second heat exchange branch 12, and the first heat exchange branch 11. Therefore, the end of the first heat exchange branch 11 furthest from the second heat exchange branch 12 is connected to the refrigerant outlet. The first heat exchange branch 11 and the first branch pipe 221 are connected by a first valve 321, and the second heat exchange branch 12 and the second branch pipe 222 are connected by a third valve 322. In this embodiment, the third branch pipe 223 and the third heat exchange branch 13 are directly connected. In other embodiments, a second control valve 32 may also be provided between the third branch pipe 223 and the third heat exchange branch 13.

[0042] In other embodiments, the number of heat exchange branches 10 may also be four, five, etc., and the heat exchange branch 10 at the beginning and the corresponding branch pipe 22 may be directly connected without being connected through the second control valve 32.

[0043] Please refer to some embodiments of this utility model. Figure 2 The first valve 321 opens, while the second valve 311, third valve 322, and fourth valve 312 close, thus activating the first heat exchange branch 11. In this embodiment, combined with... Figure 2The dashed box indicates the heat exchange branch 10 that participates in heat exchange. Specifically, the refrigerant enters the main pipe 21 from the refrigerant inlet, then passes through the first branch pipe 221, the first valve 321, and the first heat exchange branch 11 in sequence, and flows out from the refrigerant outlet. Only the first heat exchange branch 11 participates in heat exchange, which is suitable for use in deep-freeze refrigerators when the deep-freeze mode is not activated, and is a low-cooling-capacity demand mode.

[0044] Please refer to some embodiments of this utility model. Figure 3 The second valve 311 and the third valve 322 are opened, while the first valve 321 and the fourth valve 312 are closed, thus activating the first heat exchange branch 11 and the second heat exchange branch 12. In this embodiment, combined with... Figure 3 The dashed box indicates the heat exchange branch 10 that participates in heat exchange. Specifically, the refrigerant enters the main pipe 21 from the refrigerant inlet, and then passes through the second branch pipe 222, the third valve 322, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 in sequence, and flows out from the refrigerant outlet. The first heat exchange branch 11 and the second heat exchange branch 12 participate in heat exchange. This is suitable for use when the deep-cold refrigerator is in deep-cold mode, which is a medium-cooling capacity demand mode.

[0045] Please refer to some embodiments of this utility model. Figure 4 The second valve 311 and the fourth valve 312 are opened, the first valve 321 and the third valve 322 are closed, and the first heat exchange branch 11, the second heat exchange branch 12, and the third heat exchange branch 13 are operational. In this embodiment, combined with Figure 4 The dashed box indicates the heat exchange branch 10 that participates in heat exchange. Specifically, the refrigerant enters the main pipe 21 from the refrigerant inlet, and then passes through the third branch pipe 223, the fourth valve 312, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 in sequence, before flowing out from the refrigerant outlet. The first heat exchange branch 11, the second heat exchange branch 12, and the third heat exchange branch 13 all participate in heat exchange. This is suitable for use in deep-cold refrigerators when the deep-cold mode is activated and the refrigerator has a large heat load, which is a high-cooling-capacity demand mode.

[0046] Please refer to some embodiments of this utility model. Figure 5 The second valve 311 and the fourth valve 312 are opened, the first valve 321 and the third valve 322 are closed, and the first branch pipeline 221 is operational. In this embodiment, combined with Figure 5The arrows indicate the direction of refrigerant flow. Specifically, the refrigerant enters the main pipe 21 from the refrigerant inlet, then passes sequentially through the third branch pipe 223, the fourth valve 312, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11, before flowing out from the refrigerant outlet. Only one branch pipe 22 is operational, suitable for use in deep-cooling refrigerators without activating the deep-cooling mode, representing a low-flow-demand mode. It should be noted that the valve assembly 30 is in the same state in both the high-cooling-capacity demand mode and the low-flow-demand mode, and can be understood as operating in the same mode.

[0047] Please refer to some embodiments of this utility model. Figure 6 The second valve 311, the third valve 322, and the fourth valve 312 are opened, the first valve 321 is closed, and the second branch pipe 222 and the third branch pipe 223 are operational. In this embodiment, please refer to... Figure 6 The arrows indicate the direction of refrigerant flow. Specifically, after the refrigerant enters the main pipe 21 from the refrigerant inlet, it splits into two flows. The first flow passes through the second branch pipe 222, the third valve 322, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 to the refrigerant outlet. The second flow passes through the third branch pipe 223, the third heat exchange branch 13, the fourth valve 312, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 to the refrigerant outlet. With two branch pipes 22 in operation, this is suitable for use when the deep-cold mode of the deep-cold refrigerator is activated.

[0048] Please refer to some embodiments of this utility model. Figure 7 The first valve 321, the second valve 311, and the third valve 322 are opened, and the fourth valve 312 is closed, thus activating the first branch pipe 221 and the second branch pipe 222. In this embodiment, please refer to... Figure 7 The arrows indicate the direction of refrigerant flow. Specifically, after the refrigerant enters the main pipe 21 from the refrigerant inlet, it splits into two flows. The first flow passes through the first branch pipe 221, the first valve 321, and the first heat exchange branch 11 to the refrigerant outlet. The second flow passes through the second branch pipe 222, the third valve 322, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 to the refrigerant outlet. With two branch pipes 22 in operation, this is suitable for use when the deep-cold mode of the deep-cold refrigerator is activated.

[0049] Please refer to some embodiments of this utility model. Figure 8 When the first valve 321, the second valve 311, the third valve 322, and the fourth valve 312 are opened, the first branch pipe 221, the second branch pipe 222, and the third branch pipe 223 are operational. In this embodiment, please participate... Figure 8The arrows indicate the direction of refrigerant flow. Specifically, after the refrigerant enters the main pipe 21 from the refrigerant inlet, it flows in three separate paths. The first path flows through the first branch pipe 221, the first valve 321, and the first heat exchange branch 11 to the refrigerant outlet. The second path flows through the second branch pipe 222, the third valve 322, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 to the refrigerant outlet. The third path flows through the third branch pipe 223, the third heat exchange branch 13, the fourth valve 312, the second heat exchange branch 12, the second valve 311, and the first heat exchange branch 11 to the refrigerant outlet. With three branch pipes 22 in operation, this system is suitable for use in deep-cold refrigerators when the deep-cold mode is activated.

[0050] This utility model also provides a refrigeration device, which includes the evaporator in any of the above embodiments, and also includes a compressor, a condenser, and a throttling valve. The refrigeration device can be a refrigerator, a freezer, etc.

[0051] The refrigeration equipment provided by this utility model adopts the above-mentioned evaporator. The evaporator includes a heat exchange pipeline 1, a refrigerant input pipeline 20, and a valve assembly 30. The heat exchange pipeline 1 includes multiple heat exchange branches 10 connected in sequence. The refrigerant input pipeline 20 includes a main pipeline 21 and multiple branch pipelines 22. Each branch pipeline 22 is connected to each heat exchange branch 10 in a one-to-one correspondence. The valve assembly 30 is set on the heat exchange pipeline 1 and the refrigerant input pipeline 20. By switching different valve combinations according to the heat exchange requirements, each heat exchange branch 10 can be selectively used, thereby dynamically adjusting the effective area participating in heat exchange. By switching different valve combinations according to the refrigeration requirements, different branch pipelines 22 and heat exchange branches 10 are connected respectively, changing the refrigerant flow rate, breaking through the limitation of traditional evaporators that can only adjust the flow rate through the compressor.

[0052] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An evaporator, characterized in that, include: The heat exchange pipeline includes multiple heat exchange branches connected in sequence, and in the direction of refrigerant flow, the heat exchange branch at the end is connected to the refrigerant outlet. The refrigerant inlet pipeline includes a main pipeline for the refrigerant inlet and multiple branch pipelines connected in parallel, with each branch pipeline corresponding to each heat exchange branch; A valve assembly, disposed on the heat exchange pipeline and the refrigerant input pipeline, is used to selectively operate each of the heat exchange branches and / or each of the sub-pipelines.

2. The evaporator as described in claim 1, characterized in that: The valve assembly includes a first control valve that connects two adjacent heat exchange branches and is used to control the connection and closure between the two adjacent heat exchange branches.

3. The evaporator as described in claim 2, characterized in that: The valve assembly further includes a second control valve, which connects the branch pipe and the corresponding heat exchange branch, and is used to control the connection and closure between the branch pipe and the corresponding heat exchange branch.

4. The evaporator as described in claim 3, characterized in that: The valve assembly also includes a check valve disposed between two adjacent branch lines, the check valve being used to prevent refrigerant from flowing backward.

5. The evaporator as described in claim 3, characterized in that: The valve assembly also includes a flow regulating valve disposed on the branch pipeline.

6. The evaporator as described in claim 3, characterized in that: The first control valve and the second control valve are integrated between the branch pipeline and the corresponding heat exchange branch.

7. The evaporator as described in claim 3, characterized in that: The number of heat exchange branches is three, namely a first heat exchange branch, a second heat exchange branch, and a third heat exchange branch. The first heat exchange branch is connected to the refrigerant outlet. The first control valve between the first heat exchange branch and the second heat exchange branch is a second valve, and the first control valve between the second heat exchange branch and the third heat exchange branch is a fourth valve. The number of branch pipes is three, namely a first branch pipe, a second branch pipe, and a third branch pipe. The second control valve between the first branch pipe and the first heat exchange branch is a first valve, and the second control valve between the second branch pipe and the second heat exchange branch is a third valve. The third branch pipe and the third heat exchange branch are directly connected.

8. The evaporator as described in claim 7, characterized in that: When the first valve is open, and the second, third, and fourth valves are closed, the first heat exchange branch is operational; or... The second and third valves are open, the first and fourth valves are closed, and the first and second heat exchange branches are operational; or... The second valve and the fourth valve are opened, the first valve and the third valve are closed, and the first heat exchange branch, the second heat exchange branch and the third heat exchange branch are in operation.

9. The evaporator as described in claim 7, characterized in that: When the second and fourth valves are open, and the first and third valves are closed, the third branch pipeline is operational; or, When the second valve, the third valve, and the fourth valve are open, and the first valve is closed, the second branch pipeline and the third branch pipeline are operational; or, The first valve, the second valve, and the third valve are open, the fourth valve is closed, and the first branch pipeline and the second branch pipeline are operational; or... When the first valve, the second valve, the third valve, and the fourth valve are opened, the first branch pipeline, the second branch pipeline, and the third branch pipeline are operational.

10. A refrigeration device, characterized in that: Includes the evaporator according to any one of claims 1-9.

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