Refrigerant pipeline structure, heat management unit and electric loader
By designing a new refrigerant pipeline structure in the thermal management unit of the electric loader, including setting up shock absorber pipes and increasing the inner radius of the bent part, the problem that the refrigerant pipeline is prone to failure due to poor seismic resistance is solved, and the stability and operating performance of the thermal management unit are improved.
Patent Information
- Application Number
- CN202420739071.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-04-10
AI Technical Summary
In the thermal management units of existing electric loaders, the refrigerant pipelines are prone to cracking and loose joints due to poor strength and earthquake resistance, and are easily affected by vibrations from the compressor and the vehicle body.
A new type of refrigerant pipeline structure is designed, including setting up a shock absorbing pipe in the refrigerant pipeline, and a bent portion with a larger inner radius is provided at the connection between the pipeline and the compressor to ensure that the inner radius of the bent portion is at least 1.2 times the inner diameter of the corresponding hard pipe.
Through the buffering effect of the shock absorber pipe and the design of increasing the inner radius of the bend part, the shock resistance of the refrigerant pipeline is significantly improved, the refrigerant pipeline failures caused by vibration are reduced, and the stable operation of the thermal management unit is ensured.
Smart Images
Figure CN222883622U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thermal management, and in particular relates to a refrigerant pipeline structure, a thermal management unit and an electric loader. Background Art
[0002] In recent years, with the development of electric loaders, battery thermal management units for heat dissipation of power batteries have gradually been widely adopted. Relevant technologies show that the thermal management units of existing electric loaders are mostly inherited and borrowed from the field of commercial vehicles. Their structures are developed based on the working conditions of commercial vehicles. The overall seismic resistance of the thermal management unit is poor, especially in the refrigerant pipeline structure in the thermal management unit. In the existing refrigerant pipeline structure, the high-pressure refrigerant pipe connecting the compressor and the condenser and the low-pressure refrigerant pipe connecting the compressor and the plate heat exchanger are both hard pipes, and the inner radius of the bend at the bend of the pipe connected to the compressor is too small. Affected by the vibration of the compressor operation, the refrigerant pipeline joints are often loose or the refrigerant pipeline connection port is torn. Problems such as loosening. Because the working conditions of the loader are more complex and harsh than those of commercial vehicles, the body vibrates greatly during operation, which makes the seismic resistance of the refrigerant pipeline particularly obvious. Problems with the refrigerant pipeline will directly affect the overall working performance of the thermal management unit, which may lead to problems such as the battery cannot be cooled normally and the vehicle cannot work normally.
[0003] In view of this, it is necessary to provide a new refrigerant pipeline structure to solve the problems of the refrigerant pipeline in the prior art, such as poor strength and shock resistance, and easy cracking of the refrigerant pipeline and loose joints due to vibration of the compressor and the vehicle body. Utility Model Content
[0004] In order to solve the problems of poor strength and seismic resistance of refrigerant pipelines in the prior art, such as pipeline cracking and loose joints, the utility model provides a new refrigerant pipeline structure, a thermal management unit and an electric loader. Specifically, according to the first aspect of the utility model, the utility model provides a refrigerant pipeline structure, including:
[0005] A first refrigerant pipeline, the first refrigerant pipeline is connected between the condenser and the compressor, and the first refrigerant pipeline is provided with a first damping pipe;
[0006] A second refrigerant pipeline, the second refrigerant pipeline is connected between the compressor and the heat exchanger, and the second refrigerant pipeline is provided with a second damping pipe;
[0007] The third refrigerant pipeline is connected between the condenser and the heat exchanger.
[0008] In one embodiment, the lengths of the first shock absorbing tube and the second shock absorbing tube are both at least 150 mm.
[0009] In one embodiment, the first refrigerant pipeline further includes a first hard tube and a second hard tube, the first hard tube is connected between the condenser and the first damping tube, and the second hard tube is connected between the compressor and the first damping tube.
[0010] In one embodiment, the second refrigerant pipeline further includes a third hard pipe and a fourth hard pipe, the third hard pipe is connected between the heat exchanger and the second damping pipe, and the fourth hard pipe is connected between the compressor and the second damping pipe.
[0011] In one embodiment, the inner diameters of the first rigid tube and the second rigid tube are the same, and the inner diameters of the third rigid tube and the fourth rigid tube are the same.
[0012] In one embodiment, a first bending portion is provided at a connection between the first refrigerant pipeline and the compressor, and an inner radius of the first bending portion is at least 1.2 times an inner diameter of the second rigid tube.
[0013] In one embodiment, a second bending portion is provided at a connection between the second refrigerant pipeline and the compressor, and an inner radius of the second bending portion is at least 1.2 times the inner diameter of the fourth rigid tube.
[0014] According to a second aspect of the utility model, the utility model further provides a thermal management unit, which includes any of the above-mentioned refrigerant pipeline structures.
[0015] In one embodiment, the thermal management unit also includes a compressor, a condenser, a condensing fan, a heat exchanger, a pressure sensor and an electronic expansion valve. The refrigerant pipeline is connected between the compressor, the condenser and the heat exchanger. The condensing fan is used to dissipate heat for the thermal management unit. The pressure sensor is installed on the refrigerant pipeline and is used to detect the refrigerant pressure of the refrigerant pipeline. The heat exchanger is used to exchange heat between the refrigerant and the battery cooling system.
[0016] According to a third aspect of the utility model, the utility model further provides an electric loader, which includes any one of the above-mentioned thermal management units.
[0017] The utility model provides a new type of refrigerant pipeline structure, and a shock-absorbing tube is arranged in the refrigerant pipeline connected to the compressor. When the compressor vibrates during operation or the vehicle body vibrates, the shock-absorbing tube can play a role of buffering and shock absorption, which can reduce the impact of the vibration of the compressor and the vehicle body on the refrigerant pipeline, and improve the seismic resistance of the refrigerant pipeline. Furthermore, the utility model also provides an embodiment, which adds a bending part with a larger inner radius on the basis of the above scheme, and the inner radius of the bending part is at least 1.2 times the inner diameter of the corresponding hard pipe. After the inner radius of the bending part is increased, its stress bearing capacity and seismic resistance are improved, which can improve the problem of loose interface due to vibration at the connection between the refrigerant pipeline and the compressor.
[0018] The thermal management unit and electric loader provided by the utility model include the above-mentioned refrigerant pipeline structure and therefore also have the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation regulations or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0020] Figure 1 This is the schematic diagram of the thermal management system;
[0021] Figure 2 is a schematic diagram of the first refrigerant pipeline structure;
[0022] Figure 3 is a schematic diagram of the second refrigerant pipeline structure;
[0023] Description of Figure Numbers:
[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings.
[0025] 1-first refrigerant pipeline, 2-second refrigerant pipeline, 3-third refrigerant pipeline, 4-condensing fan, 5-condenser, 6-pressure sensor, 7-compressor, 8-electronic expansion valve, 9-heat exchanger, 10-battery cooling system;
[0026] 11-first shock absorbing tube, 12-first hard tube, 13-second hard tube, 131-inner diameter of second hard tube, 14-first bending portion, 141-inner radius of first bending portion;
[0027] 21 - second shock absorbing tube, 22 - third hard tube, 23 - fourth hard tube, 231 - inner diameter of fourth hard tube, 24 - second bending portion, 241 - inner radius of second bending portion. DETAILED DESCRIPTION
[0028] 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 implementation regulations described 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.
[0029] 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.
[0030] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two groups, such as two groups, three, etc., unless otherwise clearly and specifically defined.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" 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 groups of components or the interaction relationship between two groups of components, 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.
[0032] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. 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 invention.
[0033] like Figure 1 As shown, the present application provides a new type of refrigerant pipeline structure, specifically including:
[0034] A first refrigerant pipeline 1, wherein the first refrigerant pipeline 1 is connected between the condenser 5 and the compressor 7, and the first refrigerant pipeline 1 is provided with a first damping pipe 11;
[0035] A second refrigerant pipeline 2, the second refrigerant pipeline 2 is connected between the compressor 7 and the heat exchanger 9, and the second refrigerant pipeline 2 is provided with a second damping pipe 21;
[0036] The third refrigerant pipeline 3 is connected between the condenser 5 and the heat exchanger.
[0037] In this embodiment, the first refrigerant pipeline 1 is connected between the condenser 5 and the compressor 7, the second refrigerant pipeline 2 is connected between the compressor 7 and the heat exchanger 9, and the third refrigerant pipeline 3 is connected between the condenser 5 and the heat exchanger 9. Obviously, the first refrigerant pipeline 1, the second refrigerant pipeline 2 and the third refrigerant pipeline 3 interconnect the condenser 5, the compressor 7, the heat exchanger 9 and the battery cooling system 10 to form a complete cooling cycle.
[0038] In this embodiment, the first refrigerant pipeline 1 is provided with a first shock absorbing tube 11, and the second refrigerant pipeline 2 is provided with a second shock absorbing tube 21. Obviously, both the first shock absorbing tube 11 and the second shock absorbing tube 21 refer to pipelines that can provide shock absorbing effects for the refrigerant pipelines, such as refrigerant pipelines made of rubber. On the other hand, the length ratio of the first shock absorbing tube 11 in the first refrigerant pipeline 1 and the length ratio of the second shock absorbing tube 21 in the second refrigerant pipeline 2 can be set as needed, for example, according to the power size of the compressor 7.
[0039] In this embodiment, the first refrigerant pipeline 1 is provided with a first shock-absorbing tube 11, and the second refrigerant pipeline 2 is provided with a second shock-absorbing tube 21. Compared with the prior art in which the refrigerant pipelines connecting the condenser 5, the compressor 7 and the heat exchanger 9 are all hard tubes, it is obvious that the shock-absorbing tubes can have better shock-absorbing and buffering effects, and can improve the problem of easy cracking of the refrigerant pipeline due to vibration in the prior art.
[0040] In one embodiment, the lengths of the first shock absorbing tube 11 and the second shock absorbing tube 21 are both at least 150 mm.
[0041] The length of the shock absorbing tube will directly affect the shock absorbing effect. In this embodiment, the length of the first shock absorbing tube 11 and the second shock absorbing tube 21 is preferably set to at least 150 mm, which can further ensure the shock absorbing effect of the first shock absorbing tube 11 and the second shock absorbing tube 21.
[0042] Please refer to Figure 1 and Figure 2 In one embodiment, the first refrigerant pipeline 1 also includes a first hard tube 12 and a second hard tube 13, the first hard tube 12 is connected between the condenser 5 and the first damping tube 11, and the second hard tube 13 is connected between the compressor 7 and the first damping tube 11.
[0043] In this embodiment, the first hard tube 12 and the second hard tube 13 refer to hard pipes that are not easily deformed and have a certain shape and stable structure, such as metal pipes or hard plastic pipes. The first hard tube 12 is connected to the condenser 5, and the second hard tube 13 is connected to the compressor 7. The hard pipes can make the connection more firm and reliable.
[0044] Please refer to Figure 1 and Figure 3The second refrigerant pipeline 2 also includes a third hard pipe 22 and a fourth hard pipe 23. The third hard pipe 22 is connected between the heat exchanger 9 and the second damping pipe 21, and the fourth hard pipe 23 is connected between the compressor 7 and the second damping pipe 21.
[0045] In this embodiment, similar to the first hard tube 12 and the second hard tube 13, the third hard tube 22 and the fourth hard tube 23 also refer to hard pipelines that are not easily deformed and have a certain shape and a stable structure. The hard pipe pipelines are conducive to a more firm and reliable connection between the third hard tube 22, the fourth hard tube 23 and the heat exchanger 9 and the compressor 7.
[0046] It can be understood that the vibration in the refrigerant pipeline mainly comes from the compressor 7. The third refrigerant pipeline 3 is not directly connected to the compressor 7. The first refrigerant pipeline 1 and the second refrigerant pipeline 2 are also provided between the third refrigerant pipeline 3 and the compressor 7. The first refrigerant pipeline 1 and the second refrigerant pipeline 2 are both provided with shock-absorbing tubes. The shock-absorbing tubes can better buffer and damp the vibration transmitted from the compressor 7. Therefore, the vibration transmitted to the third refrigerant pipeline 3 has been filtered by the first refrigerant pipeline 1 and the second refrigerant pipeline 2, and the vibration that the third refrigerant pipeline 3 needs to withstand is relatively small. Therefore, it is preferred to set the third refrigerant pipeline 3 as a hard tube.
[0047] Please refer to Figure 2 and Figure 3 In one embodiment, the inner diameters of the first hard tube 12 and the second hard tube 13 are the same, and the inner diameters of the third hard tube 22 and the fourth hard tube 23 are the same. Such an arrangement is conducive to the overall assembly of the thermal management unit.
[0048] Please refer to Figure 2 In one embodiment, a first bending portion 14 is provided at the connection between the first refrigerant pipeline 1 and the compressor 7 , and an inner radius 141 of the first bending portion 14 is at least 1.2 times the inner diameter 131 of the second hard tube.
[0049] In this embodiment, in order to further enhance the seismic resistance of the first refrigerant pipeline 1, especially the seismic resistance of the connection with the compressor 7, a first bending portion 14 is provided at the connection between the first refrigerant pipeline 1 and the compressor 7, and the inner radius 141 of the first bending portion is at least 1.2 times the inner diameter of the corresponding hard tube, that is, the inner radius 141 of the first bending portion is at least 1.2 times the inner diameter 131 of the second hard tube. The inner radius 141 of the first bending portion and the inner diameter 131 of the second hard tube refer to the radius in the pipeline of the first bending portion 14 and the diameter in the second hard tube 13, and neither includes the wall thickness of the first bending portion 14 and the second hard tube 13. The setting of the first bending portion 14 is mainly based on the assembly space considerations of various devices in the thermal management unit, and the enlargement of the inner radius 141 of the first bending portion is mainly considered to improve its seismic resistance. Obviously, after the inner radius 141 of the first bending portion is enlarged, its seismic resistance is significantly improved, and when subjected to vibration shock from the compressor 7, it is not easy for the connection to loosen. In the field of loaders, when the inner radius 141 of the first bending portion is set to be greater than 1.2 times the inner diameter 131 of the second hard tube, the overall shock resistance is significantly improved.
[0050] Please refer to Figure 3 In one embodiment, a second bending portion 24 is provided at the connection between the second refrigerant pipeline 2 and the compressor 7 , and an inner radius 241 of the second bending portion is at least 1.2 times the inner diameter 231 of the fourth hard tube.
[0051] In this embodiment, similar to the considerations for setting the first bending portion 14, a second bending portion 24 is provided at the connection between the second refrigerant pipeline 2 and the compressor 7, and the inner radius 241 of the second bending portion is at least 1.2 times the inner diameter 231 of the fourth hard tube, which can further enhance the shock resistance of the second refrigerant pipeline 2, especially the shock resistance of the connection with the compressor 7.
[0052] According to a second aspect of the utility model, the utility model further provides a thermal management unit, which includes any of the above-mentioned refrigerant pipeline structures.
[0053] In this embodiment, the thermal management unit includes any of the above-mentioned refrigerant pipeline structures, so it also has the advantages of any of the above-mentioned refrigerant pipelines, and the seismic resistance is enhanced.
[0054] In one embodiment, the thermal management unit further includes a compressor 7, a condenser 5, a condensing fan 4, a heat exchanger 9, a pressure sensor 6 and an electronic expansion valve 8. The refrigerant pipeline is connected between the compressor 7, the condenser 5 and the heat exchanger 9. The condensing fan 4 is used to dissipate heat for the thermal management unit. The pressure sensor 6 is installed in the refrigerant pipeline and is used to detect the refrigerant pressure of the refrigerant pipeline. The heat exchanger 9 is used for heat exchange between the refrigerant and the battery cooling system 10. Similarly, the thermal management unit includes any of the above refrigerant pipeline structures, so it also has the advantages of any of the above refrigerant pipelines, and the seismic resistance is enhanced.
[0055] Please refer to Figures 1 to 3 According to the third aspect of the utility model, the utility model also provides an electric loader, which includes any one of the above-mentioned thermal management units.
[0056] Obviously, no matter it is the thermal management unit or the electric loader provided in the above embodiments, since they both include the above refrigerant pipeline structure, they also have various advantages of the above refrigerant pipeline.
[0057] The above are only preferred embodiments of the present invention, and do not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the utility model concept, or directly / indirectly used in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A refrigerant pipeline structure, characterized in that: include: A first refrigerant pipeline, the first refrigerant pipeline is connected between the condenser and the compressor, and the first refrigerant pipeline is provided with a first damping pipe; A second refrigerant pipeline, the second refrigerant pipeline is connected between the compressor and the heat exchanger, and the second refrigerant pipeline is provided with a second damping pipe; The third refrigerant pipeline is connected between the condenser and the heat exchanger.
2. The refrigerant pipeline structure according to claim 1, characterized in that: The lengths of the first shock-absorbing tube and the second shock-absorbing tube are both at least 150 mm.
3. The refrigerant pipeline structure according to claim 2, characterized in that: The first refrigerant pipeline further includes a first hard tube and a second hard tube, wherein the first hard tube is connected between the condenser and the first damping tube, and the second hard tube is connected between the compressor and the first damping tube.
4. The refrigerant pipeline structure according to claim 3, characterized in that: The second refrigerant pipeline also includes a third hard pipe and a fourth hard pipe, the third hard pipe is connected between the heat exchanger and the second damping pipe, and the fourth hard pipe is connected between the compressor and the second damping pipe.
5. The refrigerant pipeline structure according to claim 4, characterized in that: The first rigid tube has the same inner diameter as the second rigid tube, and the third rigid tube has the same inner diameter as the fourth rigid tube.
6. The refrigerant pipeline structure according to claim 5, characterized in that: A first bending portion is provided at a connection between the first refrigerant pipeline and the compressor, and an inner radius of the first bending portion is at least 1.2 times the inner diameter of the second hard tube.
7. The refrigerant pipeline structure according to claim 6, characterized in that: A second bending portion is provided at a connection between the second refrigerant pipeline and the compressor, and an inner radius of the second bending portion is at least 1.2 times the inner diameter of the fourth hard tube.
8. A thermal management unit, characterized in that: The thermal management unit includes the refrigerant pipeline structure described in any one of claims 1 to 7.
9. The thermal management unit according to claim 8, characterized in that: The thermal management unit also includes a compressor, a condenser, a condensing fan, a heat exchanger, a pressure sensor and an electronic expansion valve. The refrigerant pipeline is connected between the compressor, the condenser and the heat exchanger. The condensing fan is used to dissipate heat for the thermal management unit. The pressure sensor is installed on the refrigerant pipeline and is used to detect the refrigerant pressure of the refrigerant pipeline. The heat exchanger is used to exchange heat between the refrigerant and the battery cooling system.
10. An electric loader, characterized in that: The electric loader comprises the thermal management unit according to any one of claims 8 to 9.