Coaxial pipe refrigerating device and system for vehicle

Abstract

The invention discloses an automobile coaxial pipe refrigeration device and system, and relates to the technical field of automobile air conditioner refrigeration, the automobile coaxial pipe refrigeration device comprises an evaporator, a heat exchange branch, a compressor, a bypass branch, a control valve and a control assembly which are connected in sequence, and the bypass branch is connected with the heat exchange branch in parallel; the control valve is arranged among the evaporator, the heat exchange branch and the bypass branch, and the control assembly is connected with the control valve and is configured to obtain the temperature of an outlet of the compressor, adjust the opening degree of the control valve according to the temperature of the outlet of the compressor and distribute the flow of a refrigerant flowing into the heat exchange branch and the bypass branch, so that the temperature of the outlet of the compressor reaches a preset temperature; the temperature of the outlet of the compressor can be reduced by distributing the flow of the refrigerant flowing into the heat exchange branch and the bypass branch through the control valve, and the temperature of the outlet of the compressor is kept at the optimal temperature, so that the heat exchange and refrigeration efficiency of the refrigeration system is improved, and the condition of equipment damage is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile air conditioning refrigeration, and in particular to a vehicle coaxial tube refrigeration device and system. Background Art

[0002] A coaxial tube usually consists of an inner tube and an outer tube, with an annular channel formed between the inner and outer tubes. In an automobile air-conditioning system, high-pressure refrigerant usually flows in the inner tube, while low-pressure refrigerant flows in the annular channel between the outer and inner tubes. This design allows heat to be transferred between the high-pressure and low-pressure refrigerants through the tube wall, thereby achieving heat exchange.

[0003] When a shorter coaxial tube cannot fully perform heat exchange in a refrigeration system in the prior art, the heat exchange and refrigeration efficiency of the refrigeration system is improved by increasing the length of the coaxial tube. However, a longer coaxial tube is likely to cause the system temperature to rise, resulting in equipment damage. Summary of the invention

[0004] The embodiment of the present invention provides a vehicle coaxial tube refrigeration device and system to solve the technical problem in the related art that a long coaxial tube easily causes the system temperature to rise and causes equipment damage.

[0005] In a first aspect, a vehicle coaxial tube refrigeration device is provided, comprising:

[0006] The evaporator, heat exchange branch and compressor are connected in sequence;

[0007] A bypass branch, the bypass branch is connected in parallel with the heat exchange branch;

[0008] A control valve, the control valve being arranged between the evaporator and the heat exchange branch and the bypass branch;

[0009] A control component, the control component is connected to the control valve and is configured to:

[0010] Obtaining the temperature of the compressor outlet;

[0011] The opening of the control valve is adjusted according to the temperature of the compressor outlet, and the refrigerant flow rate flowing into the heat exchange branch and the bypass branch is distributed so that the temperature of the compressor outlet reaches a preset temperature.

[0012] In some embodiments, adjusting the opening of the control valve according to the temperature of the compressor outlet to distribute the refrigerant flow into the heat exchange branch and the bypass branch so that the temperature of the compressor outlet reaches a preset temperature includes:

[0013] When the temperature at the compressor outlet exceeds a preset temperature, adjusting the opening of the control valve so that the refrigerant flow rate flowing into the bypass branch exceeds the heat exchange branch until the temperature at the compressor outlet reaches the preset temperature;

[0014] When the temperature at the compressor outlet is lower than a preset temperature, the opening of the control valve is adjusted so that the refrigerant flow rate flowing into the heat exchange branch exceeds the bypass branch until the temperature at the compressor outlet reaches the preset temperature.

[0015] In some embodiments, the heat exchange branch includes:

[0016] A first circuit, wherein one end of the first circuit is connected to the control valve, and the other end of the first circuit is connected to the compressor;

[0017] A coaxial tube, wherein the coaxial tube is sleeved outside the first loop, one end of the coaxial tube is connected to the compressor, and the other end of the coaxial tube is connected to the evaporator.

[0018] In some embodiments, the vehicle coaxial tube refrigeration device further includes:

[0019] A condenser is disposed between one end of the coaxial tube and the compressor and is used for converting the refrigerant into liquid.

[0020] In some embodiments, the vehicle coaxial tube refrigeration device further includes:

[0021] A temperature sensor is provided between the condenser and the compressor, and is electrically connected to the control component to detect the temperature at the compressor outlet and feed it back to the control component.

[0022] In some embodiments, the temperature sensor is a Hall temperature sensor.

[0023] In some embodiments, the vehicle coaxial tube refrigeration device further includes:

[0024] A throttling device is arranged between the other end of the coaxial tube and the evaporator, and is used for throttling and reducing the pressure of the refrigerant.

[0025] In some embodiments, the control valve is a proportional regulating valve.

[0026] In some embodiments, the preset temperature is 110°C to 120°C.

[0027] In a second aspect, a vehicle coaxial tube refrigeration system is provided, comprising the aforementioned vehicle coaxial tube refrigeration device.

[0028] The beneficial effects brought about by the technical solution provided by the present invention include:

[0029] An embodiment of the present invention provides a vehicle coaxial tube refrigeration device and system, the vehicle coaxial tube refrigeration device includes an evaporator, a heat exchange branch, a compressor and a bypass branch, a control valve, and a control component connected in sequence, the bypass branch is connected in parallel with the heat exchange branch, the control valve is arranged between the evaporator and the heat exchange branch and the bypass branch, the control component is connected to the control valve, and is configured to: obtain the temperature of the compressor outlet, adjust the opening of the control valve according to the temperature of the compressor outlet, distribute the refrigerant flow flowing into the heat exchange branch and the bypass branch, so that the temperature of the compressor outlet reaches a preset temperature, and the refrigerant flow flowing into the heat exchange branch and the bypass branch through the control valve can reduce the temperature of the compressor outlet and keep the temperature of the compressor outlet at an optimal temperature, thereby improving the heat exchange and refrigeration efficiency of the refrigeration system and avoiding equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A first connection diagram of a vehicle coaxial tube refrigeration device provided by an embodiment of the present invention;

[0032] Figure 2 A second connection diagram of a vehicle coaxial tube refrigeration device provided by an embodiment of the present invention;

[0033] Reference numerals:

[0034] 1. Evaporator;

[0035] 2. heat exchange branch; 21. first circuit; 22. coaxial tube;

[0036] 3. Compressor;

[0037] 4. Bypass branch;

[0038] 5. Control valve;

[0039] 6. Condenser;

[0040] 7. Temperature sensor;

[0041] 8. Throttling device. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The embodiment of the present invention provides a vehicle coaxial tube refrigeration device and system, which can solve the technical problem in the related art that a long coaxial tube easily causes the system temperature to rise and causes equipment damage.

[0044] Figure 1 A vehicle coaxial tube refrigeration device provided by an embodiment of the present invention comprises: an evaporator 1, a heat exchange branch 2, a compressor 3 and a bypass branch 4, a control valve 5, and a control component connected in sequence.

[0045] The bypass branch 4 is connected in parallel with the heat exchange branch 2, the control valve 5 is arranged between the evaporator 1 and the heat exchange branch 2 and the bypass branch 4, the control component is connected to the control valve 5, and is configured to: obtain the temperature of the outlet of the compressor 3, adjust the opening of the control valve 5 according to the temperature of the outlet of the compressor 3, and distribute the refrigerant flow flowing into the heat exchange branch 2 and the bypass branch 4, so that the temperature of the outlet of the compressor 3 reaches a preset temperature.

[0046] The vehicle coaxial tube refrigeration device of the embodiment of the present invention is provided with an evaporator, a heat exchange branch, a compressor and a bypass branch, a control valve and a control component which are connected in sequence. The refrigerant flows through the heat exchange branch and the compressor through the evaporator, and heat is transferred through the heat exchange branch. The bypass branch is connected in parallel with the heat exchange branch, and the refrigerant only flows through the bypass branch without heat transfer. The control valve is arranged between the evaporator and the heat exchange branch and the bypass branch. The control component is connected to the control valve and is configured to: obtain the temperature of the compressor outlet, adjust the opening of the control valve according to the temperature of the compressor outlet, and distribute the refrigerant flowing into the heat exchange branch and the bypass branch. The controller component is a controller. When the temperature of the compressor outlet exceeds the preset temperature, more refrigerant is allocated to flow into the bypass branch. Since the refrigerant only flows through the bypass branch and does not transfer heat, the refrigerant passing through the bypass branch can reduce the temperature of the compressor outlet. When the temperature of the compressor outlet is lower than the preset temperature, more refrigerant is allocated to flow into the heat exchange branch. The refrigerant transfers heat through the heat exchange branch, so that the heat exchange branch can fully exchange heat and keep the temperature of the compressor outlet at the preset temperature, thereby improving the heat exchange and refrigeration efficiency of the refrigeration system and avoiding equipment damage.

[0047] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the opening of the control valve 5 is adjusted according to the temperature of the compressor 3 outlet, and the refrigerant flow rate flowing into the heat exchange branch 2 and the bypass branch 4 is distributed so that the temperature of the compressor 3 outlet reaches a preset temperature, including: when the temperature of the compressor 3 outlet exceeds the preset temperature, the opening of the control valve 5 is adjusted so that the refrigerant flow rate flowing into the bypass branch 4 exceeds the heat exchange branch 2 until the temperature of the compressor 3 outlet is the preset temperature; when the temperature of the compressor 3 outlet is lower than the preset temperature, the opening of the control valve 5 is adjusted so that the refrigerant flow rate flowing into the heat exchange branch 2 exceeds the bypass branch 4 until the temperature of the compressor 3 outlet is the preset temperature; when the temperature of the compressor 3 outlet exceeds the preset temperature by 120°C, the opening of the control valve 5 is increased. The control valve 5 is connected to the opening of the bypass branch 4 so that the refrigerant flow rate flowing into the bypass branch 4 exceeds the heat exchange branch 2. The refrigerant only flows through the bypass branch 4 without heat transfer, which can reduce the temperature of the compressor 3 outlet until its temperature is 120°C; when the temperature of the compressor 3 outlet is lower than the preset temperature of 120°C, the control valve 5 is connected to the opening of the heat exchange branch 2 so that the refrigerant flow rate flowing into the heat exchange branch 2 exceeds the bypass branch 4. The refrigerant transfers heat through the heat exchange branch 2, which can increase the temperature of the compressor 3 outlet until its temperature is 120°C, so that the temperature of the compressor 3 outlet is always maintained at the optimal temperature of 120°C, so that the vehicle coaxial tube refrigeration device according to the embodiment of the present invention has a better refrigeration effect and lower energy consumption.

[0048] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the heat exchange branch 2 includes: a first loop 21 and a coaxial tube 22, one end of the first loop 21 is connected to the control valve 5, and the other end of the first loop 21 is connected to the compressor 3, the coaxial tube 22 is sleeved on the outside of the first loop 21, one end of the coaxial tube 22 is connected to the compressor 3, and the other end of the coaxial tube 22 is connected to the evaporator 1, the compressor 3 transports the refrigerant from the low-pressure area to the high-pressure area and flows to the evaporator 1 through the coaxial tube 22, the refrigerant flows through the first loop 21 to the compressor 3 through the evaporator 1 and the control valve 5, the refrigerant flowing through the coaxial tube 22 and the refrigerant flowing through the first loop 21 perform heat transfer to achieve refrigeration, in addition, the coaxial tube 22 in the embodiment of the present invention has different specifications, and the length of the coaxial tube 22 can be adjusted according to the refrigeration requirements, and its length can be increased to 1m, thereby improving the heat exchange efficiency of the heat exchange branch 2.

[0049] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the vehicle coaxial tube refrigeration device also includes: a condenser 6, which is arranged between one end of the coaxial tube 22 and the compressor 3, and is used to convert the refrigerant into a liquid. The condenser 6 condenses the high-temperature and high-pressure refrigerant vapor discharged from the compressor 3 into a liquid state. During the condensation process, the heat released by the refrigerant vapor is absorbed by the cooling medium in the condenser 6, thereby realizing heat transfer. The condenser 6 helps to maintain the pressure and temperature stability of the refrigeration system by condensing the refrigerant vapor.

[0050] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the vehicle coaxial tube refrigeration device also includes: a temperature sensor 7, which is arranged between the condenser 6 and the compressor 3, and the temperature sensor 7 is electrically connected to the control component, and is used to detect the temperature of the outlet of the compressor 3 and feed it back to the control component. The temperature sensor 7 can detect the temperature of the outlet of the compressor 3 in real time and feed it back to the control component. The control component adjusts the opening of the control valve 5 according to the temperature of the outlet of the compressor 3, distributes the refrigerant flow rate flowing into the heat exchange branch 2 and the bypass branch 4, so that the temperature of the outlet of the compressor 3 is always maintained at an optimal temperature of 120°C.

[0051] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the temperature sensor 7 is a Hall temperature sensor, which has high measurement accuracy and a wide measurement range. It can measure a wide temperature range from low temperature to high temperature, is suitable for different application scenarios, has good stability, can maintain the accuracy of the measurement results for a long time, and can quickly respond to temperature changes to provide real-time temperature measurement data.

[0052] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the vehicle coaxial tube refrigeration device also includes: a throttling device 8, which is arranged between the other end of the coaxial tube 22 and the evaporator 1, and is used to throttle and reduce the pressure of the refrigerant. The throttling device 8 is used to automatically adjust the refrigerant flow entering the evaporator 1 according to the change of the heat load of the evaporator 1, to ensure that the refrigerant can be fully evaporated in the evaporator 1, thereby improving the refrigeration efficiency. It is also used to throttle and reduce the pressure of the high-pressure refrigerant liquid from the condenser 6 to a low-pressure liquid, thereby realizing the regulation of the refrigerant pressure, which can improve the operating efficiency and stability of the equipment and reduce energy consumption and costs.

[0053] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the control valve 5 is a proportional regulating valve, which can realize high-precision control of parameters such as flow rate and pressure, and can also quickly respond to changes in input signals and timely adjust the valve opening, thereby realizing rapid control of the refrigerant flow rate. By accurately adjusting the valve opening, the ratio of the refrigerant flow rates flowing into the heat exchange branch 2 and the bypass branch 4 can be accurately allocated, ensuring the stability and accuracy of the refrigerant flow rate and pressure.

[0054] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the preset temperature is 110℃~120℃, and the temperature at the outlet of the compressor 3 is the temperature of the high-temperature gas discharged after it compresses the refrigerant from a low-pressure state to a high-pressure state. This temperature is directly related to the performance and stability of the system. If the exhaust temperature at the outlet of the compressor 3 is too high, the refrigerant will overheat inside the compressor 3, reduce the refrigeration efficiency, increase energy consumption, and damage the compressor 3; if the exhaust temperature at the outlet of the compressor 3 is too low, the operating efficiency of the equipment will be reduced and it will not be able to fully play its role. The temperature sensor 7 is set to monitor the temperature of the outlet of the compressor 3 in real time and distribute the refrigerant flow into the heat exchange branch 2 and the bypass branch 4 by adjusting the opening of the control valve 5, so that the temperature of the outlet of the compressor 3 is always maintained at an optimal temperature of 110℃~120℃, achieving a better refrigeration effect and lower energy consumption.

[0055] As an optional implementation, in an embodiment of the invention, see Figure 2 As shown, the compressor 3, the heat exchange branch 2, and the evaporator 1 can also be connected in sequence, the bypass branch 4 and the heat exchange branch 2 can be connected in parallel, the control valve 5 can be arranged between the compressor 3 and the bypass branch 4 and the heat exchange branch 2, the compressor 3, the temperature sensor 7, the condenser 6, and the control valve 5 can be connected in sequence, the throttling device 8 can be arranged between the bypass branch 4 and the evaporator 1, the temperature of the outlet of the compressor 3 can be obtained by the temperature sensor 7, the opening of the control valve 5 can be adjusted according to the temperature of the outlet of the compressor 3, the refrigerant flow rate flowing into the heat exchange branch 2 and the bypass branch 4 can be distributed, so that the temperature of the outlet of the compressor 3 reaches a preset temperature of 120°C.

[0056] An embodiment of the present invention also provides a vehicle coaxial tube refrigeration system, including the aforementioned vehicle coaxial tube refrigeration device, the vehicle coaxial tube refrigeration device includes the bypass branch 4 connected in parallel with the heat exchange branch 2, the control valve 5 is arranged between the evaporator 1 and the heat exchange branch 2 and the bypass branch 4, the control component is connected to the control valve 5, and is configured to: obtain the temperature of the outlet of the compressor 3, adjust the opening of the control valve 5 according to the temperature of the outlet of the compressor 3, and distribute the refrigerant flow flowing into the heat exchange branch 2 and the bypass branch 4, so that the temperature of the outlet of the compressor 3 reaches a preset temperature.

[0057] The vehicle coaxial tube refrigeration system of the embodiment of the present invention, the vehicle coaxial tube refrigeration device is provided with an evaporator, a heat exchange branch, a compressor and a bypass branch, a control valve, and a control component connected in sequence. The refrigerant flows through the heat exchange branch and the compressor through the evaporator, and heat is transferred through the heat exchange branch. The bypass branch is connected in parallel with the heat exchange branch. The refrigerant only flows through the bypass branch without heat transfer. The control valve is arranged between the evaporator and the heat exchange branch and the bypass branch. The control component is connected to the control valve and is configured to: obtain the temperature of the compressor outlet, adjust the opening of the control valve according to the temperature of the compressor outlet, and distribute the refrigerant flowing into the heat exchange branch and the bypass branch. The refrigerant flow rate of the bypass branch is controlled so that the temperature of the compressor outlet reaches a preset temperature. The controller component is a controller. When the temperature of the compressor outlet exceeds the preset temperature, more refrigerant is allocated to flow into the bypass branch. Since the refrigerant only flows through the bypass branch and does not transfer heat, the refrigerant passing through the bypass branch can reduce the temperature of the compressor outlet. When the temperature of the compressor outlet is lower than the preset temperature, more refrigerant is allocated to flow into the heat exchange branch. The refrigerant transfers heat through the heat exchange branch, so that the heat exchange branch can fully exchange heat and keep the temperature of the compressor outlet at the preset temperature, thereby improving the heat exchange and refrigeration efficiency of the refrigeration system and avoiding equipment damage.

[0058] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the opening of the control valve 5 is adjusted according to the temperature of the compressor 3 outlet, and the refrigerant flow rate flowing into the heat exchange branch 2 and the bypass branch 4 is distributed so that the temperature of the compressor 3 outlet reaches a preset temperature, including: when the temperature of the compressor 3 outlet exceeds the preset temperature, the opening of the control valve 5 is adjusted so that the refrigerant flow rate flowing into the bypass branch 4 exceeds the heat exchange branch 2 until the temperature of the compressor 3 outlet is the preset temperature; when the temperature of the compressor 3 outlet is lower than the preset temperature, the opening of the control valve 5 is adjusted so that the refrigerant flow rate flowing into the heat exchange branch 2 exceeds the bypass branch 4 until the temperature of the compressor 3 outlet is the preset temperature; when the temperature of the compressor 3 outlet exceeds the preset temperature by 120°C, the opening of the control valve 5 is increased. The control valve 5 is connected to the opening of the bypass branch 4 so that the refrigerant flow rate flowing into the bypass branch 4 exceeds the heat exchange branch 2. The refrigerant only flows through the bypass branch 4 without heat transfer, which can reduce the temperature of the compressor 3 outlet until its temperature is 120°C; when the temperature of the compressor 3 outlet is lower than the preset temperature of 120°C, the control valve 5 is connected to the opening of the heat exchange branch 2 so that the refrigerant flow rate flowing into the heat exchange branch 2 exceeds the bypass branch 4. The refrigerant transfers heat through the heat exchange branch 2, which can increase the temperature of the compressor 3 outlet until its temperature is 120°C, so that the temperature of the compressor 3 outlet is always maintained at the optimal temperature of 120°C, so that the vehicle coaxial tube refrigeration device according to the embodiment of the present invention has a better refrigeration effect and lower energy consumption.

[0059] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the heat exchange branch 2 includes: a first loop 21 and a coaxial tube 22, one end of the first loop 21 is connected to the control valve 5, and the other end of the first loop 21 is connected to the compressor 3, the coaxial tube 22 is sleeved on the outside of the first loop 21, one end of the coaxial tube 22 is connected to the compressor 3, and the other end of the coaxial tube 22 is connected to the evaporator 1, the compressor 3 transports the refrigerant from the low-pressure area to the high-pressure area and flows to the evaporator 1 through the coaxial tube 22, the refrigerant flows through the first loop 21 to the compressor 3 through the evaporator 1 and the control valve 5, the refrigerant flowing through the coaxial tube 22 and the refrigerant flowing through the first loop 21 perform heat transfer to achieve refrigeration, in addition, the coaxial tube 22 in the embodiment of the present invention has different specifications, and the length of the coaxial tube 22 can be adjusted according to the refrigeration requirements, and its length can be increased to 1m, thereby improving the heat exchange efficiency of the heat exchange branch 2.

[0060] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the vehicle coaxial tube refrigeration device also includes: a condenser 6, which is arranged between one end of the coaxial tube 22 and the compressor 3, and is used to convert the refrigerant into a liquid. The condenser 6 condenses the high-temperature and high-pressure refrigerant vapor discharged from the compressor 3 into a liquid state. During the condensation process, the heat released by the refrigerant vapor is absorbed by the cooling medium in the condenser 6, thereby realizing heat transfer. The condenser 6 helps to maintain the pressure and temperature stability of the refrigeration system by condensing the refrigerant vapor.

[0061] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the vehicle coaxial tube refrigeration device also includes: a temperature sensor 7, which is arranged between the condenser 6 and the compressor 3, and the temperature sensor 7 is electrically connected to the control component, and is used to detect the temperature of the outlet of the compressor 3 and feed it back to the control component. The temperature sensor 7 can detect the temperature of the outlet of the compressor 3 in real time and feed it back to the control component. The control component adjusts the opening of the control valve according to the temperature of the outlet of the compressor 3, distributes the refrigerant flow flowing into the heat exchange branch 2 and the bypass branch 4, so that the temperature of the outlet of the compressor 3 is always maintained at an optimal temperature of 120°C.

[0062] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the temperature sensor 7 is a Hall temperature sensor, which has high measurement accuracy and a wide measurement range. It can measure a wide temperature range from low temperature to high temperature, is suitable for different application scenarios, has good stability, can maintain the accuracy of the measurement results for a long time, and can quickly respond to temperature changes to provide real-time temperature measurement data.

[0063] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the vehicle coaxial tube refrigeration device also includes: a throttling device 8, which is arranged between the other end of the coaxial tube 22 and the evaporator 1, and is used to throttle and reduce the pressure of the refrigerant. The throttling device 8 is used to automatically adjust the refrigerant flow entering the evaporator 1 according to the change of the heat load of the evaporator 1, to ensure that the refrigerant can be fully evaporated in the evaporator 1, thereby improving the refrigeration efficiency. It is also used to throttle and reduce the pressure of the high-pressure refrigerant liquid from the condenser 6 to a low-pressure liquid, thereby realizing the regulation of the refrigerant pressure, which can improve the operating efficiency and stability of the equipment and reduce energy consumption and costs.

[0064] As an optional implementation, in an embodiment of the invention, see Figure 1As shown, the control valve 5 is a proportional regulating valve, which can realize high-precision control of parameters such as flow rate and pressure, and can also quickly respond to changes in input signals and timely adjust the valve opening, thereby realizing rapid control of the refrigerant flow rate. By accurately adjusting the valve opening, the ratio of the refrigerant flow rates flowing into the heat exchange branch 2 and the bypass branch 4 can be accurately allocated, ensuring the stability and accuracy of the refrigerant flow rate and pressure.

[0065] As an optional implementation, in an embodiment of the invention, see Figure 1 As shown, the preset temperature is 110℃~120℃, and the temperature at the outlet of the compressor 3 is the temperature of the high-temperature gas discharged after it compresses the refrigerant from a low-pressure state to a high-pressure state. This temperature is directly related to the performance and stability of the system. If the exhaust temperature at the outlet of the compressor 3 is too high, the refrigerant will overheat inside the compressor 3, reduce the refrigeration efficiency, increase energy consumption, and damage the compressor 3; if the exhaust temperature at the outlet of the compressor 3 is too low, the operating efficiency of the equipment will be reduced and it will not be able to fully play its role. The temperature sensor 7 is set to monitor the temperature of the outlet of the compressor 3 in real time and distribute the refrigerant flow into the heat exchange branch 2 and the bypass branch 4 by adjusting the opening of the control valve 5, so that the temperature of the outlet of the compressor 3 is always maintained at an optimal temperature of 110℃~120℃, achieving a better refrigeration effect and lower energy consumption.

[0066] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0067] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0068] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A vehicle coaxial tube refrigeration device, characterized in that: include: An evaporator (1), a heat exchange branch (2), and a compressor (3) connected in sequence; A bypass branch (4), the bypass branch (4) being connected in parallel with the heat exchange branch (2); a control valve (5), the control valve (5) being arranged between the evaporator (1) and the heat exchange branch (2) and the bypass branch (4); A control assembly, the control assembly being connected to the control valve (5) and being configured to: Obtaining the temperature of the outlet of the compressor (3); The opening of the control valve (5) is adjusted according to the temperature at the outlet of the compressor (3), and the refrigerant flow rate flowing into the heat exchange branch (2) and the bypass branch (4) is distributed so that the temperature at the outlet of the compressor (3) reaches a preset temperature.

2. The vehicle coaxial tube refrigeration device according to claim 1, characterized in that: The method of adjusting the opening of the control valve (5) according to the temperature of the compressor (3) outlet to distribute the refrigerant flow rate flowing into the heat exchange branch (2) and the bypass branch (4) so ​​that the temperature of the compressor (3) outlet reaches a preset temperature comprises: When the temperature at the outlet of the compressor (3) exceeds a preset temperature, the opening of the control valve (5) is adjusted so that the flow rate of the refrigerant flowing into the bypass branch (4) exceeds the heat exchange branch (2) until the temperature at the outlet of the compressor (3) reaches the preset temperature; When the temperature at the outlet of the compressor (3) is lower than a preset temperature, the opening of the control valve (5) is adjusted so that the refrigerant flow rate flowing into the heat exchange branch (2) exceeds the bypass branch (4) until the temperature at the outlet of the compressor (3) reaches the preset temperature.

3. The vehicle coaxial tube refrigeration device according to claim 1, characterized in that: The heat exchange branch (2) comprises: A first circuit (21), one end of the first circuit (21) is connected to the control valve (5), and the other end of the first circuit (21) is connected to the compressor (3); A coaxial tube (22), wherein the coaxial tube (22) is sleeved outside the first circuit (21), one end of the coaxial tube (22) is connected to the compressor (3), and the other end of the coaxial tube (22) is connected to the evaporator (1).

4. The vehicle coaxial tube refrigeration device according to claim 3, characterized in that: Also includes: A condenser (6), the condenser (6) being arranged between one end of the coaxial tube (22) and the compressor (3), and being used for converting the refrigerant into liquid.

5. The vehicle coaxial tube refrigeration device according to claim 4, characterized in that: Also includes: A temperature sensor (7), wherein the temperature sensor (7) is disposed between the condenser (6) and the compressor (3), and the temperature sensor (7) is electrically connected to the control component and is used to detect the temperature at the outlet of the compressor (3) and feed it back to the control component.

6. The vehicle coaxial tube refrigeration device according to claim 5, characterized in that: The temperature sensor (7) is a Hall temperature sensor.

7. The vehicle coaxial tube refrigeration device according to claim 5, characterized in that: Also includes: A throttling device (8), wherein the throttling device (8) is arranged between the other end of the coaxial tube (22) and the evaporator (1), and is used for throttling and reducing the pressure of the refrigerant.

8. The vehicle coaxial tube refrigeration device according to claim 1, characterized in that: The control valve (5) is a proportional regulating valve.

9. The vehicle coaxial tube refrigeration device according to claim 1, characterized in that: The preset temperature is 110°C to 120°C.

10. A vehicle coaxial tube refrigeration system, characterized in that: The invention comprises the vehicle coaxial tube refrigeration device according to any one of claims 1 to 9.

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