Liquid reservoir, refrigerating system and automobile

Abstract

The utility model provides a liquid reservoir, refrigerating system and automobile, including barrel, seal cover and curved backheating pipe, seal cover covers the barrel, the bottom of barrel is equipped with low pressure refrigerant outlet pipe and low pressure refrigerant inlet pipe, low pressure refrigerant outlet pipe is connected with one end of curved backheating pipe, low pressure refrigerant inlet pipe is connected with the other end of curved backheating pipe, and the other end of curved backheating pipe is equipped with the low pressure refrigerant inlet pipe. The sealing cover is provided with a high-pressure liquid refrigerant outlet pipe and a high-pressure liquid refrigerant inlet pipe, a liquid refrigerant outlet of the high-pressure liquid refrigerant outlet pipe is formed in the position close to the bottom of the barrel, and a liquid refrigerant inlet of the high-pressure liquid refrigerant inlet pipe is formed in the position close to the top of the barrel in the barrel. According to the liquid reservoir, a high-temperature and high-pressure liquid refrigerant flowing through the liquid reservoir can fully exchange heat with a low-temperature and low-pressure refrigerant flowing through the curved heat return pipe, so that the low-temperature and low-pressure refrigerant reaches an overheating state, the working efficiency of a refrigerating system is improved while a compressor is effectively protected, the amount of the refrigerant participating in circulation is adjusted, and the working efficiency of the refrigerating system is improved. And the cost and the weight are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air conditioners, in particular to a liquid storage device, a refrigeration system and an automobile. Background Art

[0002] In the automotive refrigerant system, the amount of refrigerant involved in the circulation is different under different working conditions, and the actual circulation amount of the refrigerant is often adjusted by adding a liquid receiver to the system. In addition, in the automotive refrigerant system, in order to ensure that the compressor does not produce "liquid hammer", the control system needs to ensure that the refrigerant entering the compressor is in an overheated state. Controlling the refrigerant entering the compressor to be in an overheated state will reduce the working efficiency of the refrigerant system. Therefore, it is necessary to add a heat recovery pipe to the system to allow the low-pressure refrigerant entering the compressor to be fully superheated. However, due to the limited installation space of the car, arranging the two components of the liquid receiver and the heat recovery pipe at the same time will result in limited space usage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a liquid storage device, a refrigeration system and a car with reasonable structure and liquid storage and heat recovery functions.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a liquid storage tank, comprising a cylinder, a sealing cover and a curved heat recovery pipe arranged inside the cylinder, the sealing cover is covered on the cylinder, and the bottom of the cylinder is provided with a low-pressure refrigerant outlet pipe and a low-pressure refrigerant inlet pipe, the low-pressure refrigerant outlet pipe is connected to one end of the curved heat recovery pipe, and the low-pressure refrigerant inlet pipe is connected to the other end of the curved heat recovery pipe, the sealing cover is provided with a high-pressure liquid refrigerant outlet pipe and a high-pressure liquid refrigerant inlet pipe, the high-pressure liquid refrigerant outlet pipe is provided with a liquid refrigerant outlet, the liquid refrigerant outlet is arranged in the cylinder near the bottom of the cylinder, the high-pressure liquid refrigerant inlet pipe is provided with a liquid refrigerant inlet, and the liquid refrigerant inlet is arranged in the cylinder near the top of the cylinder.

[0005] Furthermore, the curved heat recovery pipe is a spiral heat recovery pipe.

[0006] Furthermore, heat exchange fins are provided on the outer side of the curved heat recovery tube.

[0007] Furthermore, the heat exchange fins and the curved heat recovery tubes are connected by welding.

[0008] Furthermore, it also includes a molecular sieve, which is fixed in the cylinder.

[0009] Furthermore, the liquid refrigerant outlet is provided with a filter.

[0010] Furthermore, a clamping ring is provided on the outer side of the liquid refrigerant outlet, and a clamping groove is provided on the filter corresponding to the clamping ring.

[0011] Furthermore, the filter is provided with a filter screen, and the mesh number of the filter screen is at least 50 meshes.

[0012] The beneficial effects of the present invention are: providing a liquid storage tank with integrated heat recovery function, by arranging the liquid refrigerant outlet of the high-pressure liquid condensation outlet pipe at the bottom of the cylinder in the liquid storage tank, and arranging the liquid refrigerant inlet of the high-pressure liquid refrigerant inlet pipe at the top of the cylinder in the liquid storage tank, the high-temperature and high-pressure liquid refrigerant flowing through the liquid storage tank and the low-temperature and low-pressure refrigerant flowing through the curved heat recovery pipe can fully exchange heat, so that the low-temperature and low-pressure refrigerant reaches a superheated state, effectively protecting the compressor, improving the working efficiency of the refrigeration system, and realizing the adjustment of the amount of refrigerant participating in the circulation, compared with two independent components, reducing the cost and weight.

[0013] The utility model also relates to a refrigeration system, comprising the above-mentioned liquid storage device. The advantages of the refrigeration system compared with the prior art are the same as those of the above-mentioned liquid storage device, and the description thereof will not be repeated.

[0014] The utility model also relates to a car, comprising the above refrigeration system. The advantages of the car compared with the prior art are the same as those of the above refrigeration system, and will not be described again. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The specific structure of the utility model is described in detail below with reference to the accompanying drawings:

[0016] Figure 1 This is a front structural schematic diagram of the liquid storage device of the utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the liquid storage device of the utility model;

[0018] Figure 3 It is a schematic diagram of the right side structure of the liquid storage device of the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 5 for Figure 4 A close-up structural diagram of B in the middle;

[0021] Figure 6 It is a schematic cross-sectional structure diagram of the curved heat recovery pipe of the liquid storage device of the utility model;

[0022] Figure 7 It is a structural block diagram of the refrigeration system of the utility model;

[0023] 1- cylinder; 2- cover; 3- curved heat recovery pipe; 4- low-pressure refrigerant outlet pipe; 5- low-pressure refrigerant inlet pipe; 6- high-pressure liquid refrigerant outlet pipe; 61- clamp ring; 7- high-pressure liquid refrigerant inlet pipe; 8- molecular sieve; 9- filter; 91- slot;

[0024] 100-liquid storage tank; 200-compressor; 300-condenser; 400-battery electronic expansion valve; 500-battery cooler; 600-air conditioning electronic expansion valve; 700-evaporator; 800-water pump; 900-battery pack. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, "and / or" in the full text includes three solutions. Taking A and / or B as an example, it includes technical solution A, technical solution B, and technical solution that satisfies both A and B; in addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0029] Example

[0030] See also Figures 1 to 6 The present embodiment provides a liquid storage device, comprising a cylinder 1, a sealing cover 2 and a curved heat recovery pipe 3 arranged inside the cylinder, the sealing cover 2 covers the cylinder 1, and a low-pressure refrigerant outlet pipe 4 and a low-pressure refrigerant inlet pipe 5 are arranged at the bottom of the cylinder 1, the low-pressure refrigerant outlet pipe 4 is connected to one end of the curved heat recovery pipe 3, and the low-pressure refrigerant inlet pipe 5 is connected to the other end of the curved heat recovery pipe 3, the sealing cover 2 is provided with a high-pressure liquid refrigerant outlet pipe 6 and a high-pressure liquid refrigerant inlet pipe 7, the high-pressure liquid refrigerant outlet pipe 6 is provided with a liquid refrigerant outlet, and the liquid refrigerant outlet is arranged in the cylinder 1 near the bottom of the cylinder 1, the high-pressure liquid refrigerant inlet pipe 7 is provided with a liquid refrigerant inlet, and the liquid refrigerant inlet is arranged in the cylinder 1 near the top of the cylinder 1.

[0031] In this embodiment, the liquid storage device includes a cylinder 1 with an opening at one end and a sealing cover 2 covering the opening of the cylinder to ensure that the two form a sealed cavity. The curved heat recovery pipe 3 is arranged in the sealed cavity. The use of the curved heat recovery pipe 3 can increase the length of the tube body of the extended heat recovery pipe in the liquid storage device and increase the surface area of ​​the heat recovery pipe, thereby achieving a better heat exchange effect. The bottom of the cylinder 1 is integrated with a low-pressure refrigerant outlet pipe 4 and a low-pressure refrigerant inlet pipe 5, and the low-pressure refrigerant inlet pipe 4 extends into the cylinder 1. One end is connected to one end of the curved heat recovery tube 3, the end of the low-pressure refrigerant outlet pipe 5 extending into the cylinder 1 is connected to the other end of the curved heat recovery tube 3, the cover 2 is integrated with a high-pressure liquid refrigerant outlet pipe 6 and a high-pressure liquid refrigerant inlet pipe 7, the high-pressure liquid refrigerant outlet pipe 6 is provided with a liquid refrigerant outlet, and the liquid refrigerant outlet is arranged in the cylinder 1 near the bottom of the cylinder 1, the high-pressure liquid refrigerant inlet pipe 7 is provided with a liquid refrigerant inlet, and the liquid refrigerant inlet is arranged in the cylinder near the top of the cylinder 1.

[0032] High-pressure and high-temperature liquid refrigerant enters the sealed cavity of the liquid storage tank from the high-pressure liquid refrigerant inlet pipe 7. The liquid refrigerant is stored in the lower position of the cylinder 1 due to gravity. Low-pressure and low-temperature gaseous refrigerant enters from the low-pressure refrigerant inlet pipe 5. It exchanges heat with the liquid refrigerant in the sealed cavity through the curved heat recovery pipe 3, so that the gaseous refrigerant is heated to obtain superheated gaseous refrigerant. The superheated gaseous refrigerant then leaves the liquid storage tank from the low-pressure refrigerant outlet pipe 4 and is transported to the compressor, thereby ensuring that the refrigerant entering the compressor is in a superheated state and ensuring that the compressor does not produce liquid hammer.

[0033] In one embodiment, the structure of the curved heat recovery pipe 3 is improved to ensure the heat exchange efficiency between the liquid refrigerant and the gaseous refrigerant. Specifically, the curved heat recovery pipe 3 is a spiral heat recovery pipe.

[0034] In this embodiment, the use of a spiral heat recovery pipe can significantly extend the length of the heat recovery pipe body in the liquid storage tank and increase the surface area of ​​the heat recovery pipe, thereby ensuring the heat exchange efficiency between the liquid refrigerant and the gaseous refrigerant.

[0035] Similarly, the curved heat recovery pipe 3 can also be a wavy heat recovery pipe, which can also extend the length of the heat recovery pipe body in the liquid storage tank and increase the surface area of ​​the heat recovery pipe, thereby achieving a better heat exchange effect.

[0036] In one embodiment, the structure of the curved heat regeneration tube 3 is improved to ensure the heat exchange efficiency between the liquid refrigerant and the gaseous refrigerant. Specifically, heat exchange fins 31 are provided on the outer side of the curved heat regeneration tube 3 .

[0037] In this embodiment, heat exchange fins 31 are arranged at intervals on the outer side of the curved heat recovery tube 3, which can further increase the surface area of ​​the curved heat recovery tube 3, thereby achieving a better heat exchange effect.

[0038] In one embodiment, the connection method between the curved heat regeneration tube 3 and the heat exchange fin 31 is improved to ensure the reliability and thermal conductivity of the connection between the curved heat regeneration tube 3 and the heat exchange fin 31. Specifically, the heat exchange fin 31 and the curved heat regeneration tube 3 are connected by welding.

[0039] In this embodiment, the heat exchange fins 31 are fixed to the outside of the curved heat recovery tube 3 by welding, which can ensure the reliability of the connection between the heat exchange fins 31 and the curved heat recovery tube 3 and ensure the efficiency of heat conduction. Similarly, the heat exchange fins 31 can also be sleeved on the curved heat recovery tube 3 by interference fit.

[0040] In one embodiment, the structure of the liquid storage tank is improved to ensure the dryness of the refrigerant system. Specifically, the liquid storage tank further includes a molecular sieve 8, which is fixed in the cylinder.

[0041] In this embodiment, the molecular sieve 8 is fixed to the high-pressure liquid refrigerant outlet pipe 6 by a special cable tie, located at one end close to the bottom of the cylinder 1, so that the molecular sieve 8 can be immersed in the high-pressure liquid refrigerant to ensure the removal of moisture in the refrigerant and ensure the dryness of the refrigerant system.

[0042] In one embodiment, the structure of the liquid storage tank is improved to ensure the cleanliness of the refrigerant system. Specifically, a filter 9 is provided at the liquid refrigerant outlet.

[0043] In this embodiment, a filter 9 is provided at the outlet of the liquid refrigerant, which can effectively block impurities and prevent the impurities in the refrigerant from clogging the expansion valve in the system and wearing the compressor.

[0044] In one embodiment, the installation structure of the filter 9 is improved to ensure the reliability and stability of the connection between the filter 9 and the high-pressure liquid refrigerant outlet pipe 6. Specifically, a clamping ring 61 is provided on the outside of the liquid refrigerant outlet, and the filter 9 is provided with a clamping groove 91 corresponding to the clamping ring.

[0045] In this embodiment, in order to prevent the filter 9 sleeved on the liquid refrigerant outlet from falling off during operation and affecting the normal use of the system, a clamping ring 61 is provided on the outer side of the liquid refrigerant outlet, and a groove 91 is provided on the inner wall of the filter 9 corresponding to the clamping ring 91. After the filter 9 is installed in place, the clamping ring 61 on the outer side of the liquid refrigerant outlet will be inserted into the groove 91 on the inner wall of the filter 9, thereby achieving a reliable connection between the two.

[0046] In one embodiment, the structure of the filter 9 is improved to ensure the filtering effect of the filter 9. Specifically, the filter 9 is provided with a filter screen, and the mesh number of the filter screen is at least 50 meshes.

[0047] In this embodiment, a filter with a mesh size of at least 50 is used, which can effectively filter out impurities with a diameter greater than 0.3 mm in the refrigerant, prevent the impurities from clogging the expansion valve in the system or wearing the compressor, and effectively extend the service life of the system.

[0048] From the above description, it can be seen that the beneficial effects of the utility model are: providing a liquid storage tank with integrated heat recovery function, by setting the liquid refrigerant outlet of the high-pressure liquid condensation outlet pipe at the bottom of the cylinder in the liquid storage tank, and setting the liquid refrigerant inlet of the high-pressure liquid refrigerant inlet pipe at the top of the cylinder in the liquid storage tank, the high-temperature and high-pressure liquid refrigerant flowing through the liquid storage tank and the low-temperature and low-pressure refrigerant flowing through the curved heat recovery pipe can fully exchange heat, so that the low-temperature and low-pressure refrigerant reaches a superheated state, effectively protecting the compressor while improving the working efficiency of the refrigeration system, and also realizing the adjustment of the amount of refrigerant participating in the circulation. Compared with two independent components, the cost is reduced and the weight is reduced.

[0049] See also Figure 7 The utility model also relates to a refrigeration system for automobile thermal management, including the above-mentioned liquid storage tank 100 and a compressor 200, a condenser 300, a battery electronic expansion valve 400, a battery cooler 500, an air conditioning electronic expansion valve 600, an evaporator 700, a water pump 800 and a battery pack 900.

[0050] The low-pressure refrigerant outlet pipe 4 of the liquid receiver 100 is connected to one end of the condenser 300 through the compressor 200, and the other end of the condenser 300 is connected to the high-pressure liquid refrigerant inlet pipe 7 of the liquid receiver. The high-pressure liquid refrigerant outlet pipe 6 of the liquid receiver 100 is connected to one end of the first passage of the battery cooler 500 through the battery electronic expansion valve 400, and the low-pressure refrigerant inlet pipe 5 of the liquid receiver 100 is connected to the other end of the first passage of the battery cooler 500. The high-pressure liquid refrigerant outlet pipe 6 of the liquid receiver 100 is connected to the evaporator 700 through the air conditioning electronic expansion valve 600. One end of the second passage of the battery cooler 500 is connected, the low-pressure refrigerant inlet pipe 5 of the liquid storage tank 100 is connected to the other end of the evaporator 700, one end of the second passage of the battery cooler 500 is connected to one end of the cooling water pipeline inside the battery pack through the water pump 800, and the other end of the cooling water pipeline is connected to the other end of the second passage of the battery cooler 500. The battery cooler 500 realizes heat exchange between the refrigerant and the cooling water through the first passage and the second passage. The water pump 800 drives the cooling water to flow between the battery cooler 500 and the battery pack 900, thereby realizing temperature control of the battery pack 900.

[0051] During the operation of the refrigeration system, the low-temperature and low-pressure gaseous refrigerant is converted into a high-temperature and high-pressure liquid refrigerant through the compressor 200 and the condenser 300, and enters the liquid storage tank 100 from the high-pressure liquid refrigerant inlet pipe 7, and is stored in the lower position of the cylinder 1 under the action of gravity. The water is filtered out by the molecular sieve 8, and then the impurities are filtered out by the filter 9, and the high-pressure liquid refrigerant is output from the high-pressure liquid refrigerant outlet pipe 6 to the battery cooler 500 and the evaporator 700. The high-temperature and high-pressure liquid refrigerant is converted into a low-pressure gaseous refrigerant through heat exchange. The low-pressure gaseous refrigerant enters the curved heat recovery pipe 3 in the liquid storage tank 100 from the low-pressure refrigerant inlet pipe 5, and exchanges heat with the liquid refrigerant in the cylinder 1, thereby converting it into a superheated gaseous refrigerant, and finally leaves the liquid storage tank 100 from the low-pressure refrigerant outlet pipe 4, and is transported to the compressor 200 to continue to participate in the cycle and do work. In this process, the liquid storage tank 100 plays a role in adjusting the refrigerant circulation amount, improving the refrigerant heat exchange efficiency, and reducing the system energy consumption.

[0052] The utility model also relates to a car, comprising the above refrigeration system. The advantages of the car compared with the prior art are the same as those of the above refrigeration system, and will not be described again.

[0053] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid storage container, characterized in that: It includes a cylinder, a cover and a curved heat recovery tube arranged inside the cylinder, the cover is covered on the cylinder, and a low-pressure refrigerant outlet pipe and a low-pressure refrigerant inlet pipe are arranged at the bottom of the cylinder, the low-pressure refrigerant outlet pipe is connected to one end of the curved heat recovery tube, and the low-pressure refrigerant inlet pipe is connected to the other end of the curved heat recovery tube, the cover is provided with a high-pressure liquid refrigerant outlet pipe and a high-pressure liquid refrigerant inlet pipe, the high-pressure liquid refrigerant outlet pipe is provided with a liquid refrigerant outlet, and the liquid refrigerant outlet is arranged in the cylinder near the bottom of the cylinder, the high-pressure liquid refrigerant inlet pipe is provided with a liquid refrigerant inlet, and the liquid refrigerant inlet is arranged in the cylinder near the top of the cylinder.

2. The liquid reservoir according to claim 1, characterized in that: The curved heat recovery pipe is a spiral heat recovery pipe.

3. The liquid reservoir according to claim 1, characterized in that: Heat exchange fins are arranged on the outer side of the curved heat recovery tube.

4. The liquid reservoir according to claim 3, characterized in that: The heat exchange fins are connected to the curved heat recovery tubes by welding.

5. The liquid reservoir according to claim 1, characterized in that: It also includes a molecular sieve, which is fixed in the cylinder.

6. The liquid reservoir according to claim 1, characterized in that: The liquid refrigerant outlet is provided with a filter.

7. The liquid reservoir according to claim 6, characterized in that: A clamping ring is provided on the outer side of the liquid refrigerant outlet, and a clamping groove is provided on the filter corresponding to the clamping ring.

8. The liquid reservoir according to claim 6, characterized in that: The filter is provided with a filter screen, and the mesh number of the filter screen is at least 50 meshes.

9. A refrigeration system, characterized in that: Comprising a liquid reservoir as described in any one of claims 1-8.

10. An automobile, characterized in that: Comprising the refrigeration system as claimed in claim 9.

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