Resistance heating module and high voltage integrated module electric compressor

Abstract

The utility model provides a kind of resistance heating module and high pressure integrated module electric compressor, the resistance heating module provided includes outer shell, inner shell, support frame and heating pipe group, the inner shell is located the inside of the outer shell, heating cavity is formed between the inner shell with the outer shell to flow through heat conducting medium;The support frame is located in the heating cavity;The heating pipe group is embedded on the support frame to heat the heat conducting medium, the heating pipe group includes multiple S-shaped pipe bodies in the same horizontal plane, the first end of each S-shaped pipe body is connected using vertical bending pipe with vertical terminal post;The end of adjacent two S-shaped pipe bodies is connected using horizontal bending pipe.The resistance heating module provided by the utility model is integrated on compressor body, can effectively improve space utilization, heating effect is better, and safety performance is higher.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, and in particular relates to a resistance heating module and a high-pressure integrated module electric compressor. Background Technology

[0002] Currently, under strong national policies, the popularization of electric vehicles is an inevitable trend. However, in the process of developing electric vehicles, more and more problems are becoming increasingly prominent. For example, in conventional air conditioning systems, the heater and compressor are separate structures, requiring two sets of high-voltage terminals for power supply, which is costly. Those skilled in the art are constantly trying to improve this. For instance, patent application number CN202410603030.5 discloses a high-voltage integrated module electric compressor with an integrated heating module, which integrates the heater and compressor. To reduce costs, the heater integrated into the compressor is generally a thick-film heater with stainless steel as the substrate. However, this type of heater has the following drawbacks: the collision coefficients of stainless steel and die-cast aluminum differ greatly, resulting in significantly different degrees of deformation during heating, which can easily lead to irreversible deformation. To prevent leakage, multiple layers of insulation need to be plated on the stainless steel substrate, which increases costs; moreover, the insulation layer is at risk of burn-through during prolonged heating or overheating; in addition, its energy density is low, resulting in poor heating performance. Utility Model Content

[0003] In view of the problems existing in the prior art, the main purpose of this utility model is to provide a resistance heating module and a high-pressure integrated module electric compressor. The resistance heating module provided is integrated on the compressor body, which can effectively improve space utilization, heating effect and safety performance.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] This utility model provides a resistance heating module, which includes:

[0006] outer shell;

[0007] An inner shell is disposed inside the outer shell, and a heating cavity is formed between the inner shell and the outer shell to allow the flow of a heat-conducting medium.

[0008] A support frame is disposed within the heating cavity;

[0009] A heating tube assembly is embedded in the support frame to heat the heat-conducting medium. The heating tube assembly includes multiple S-shaped tubes located in the same horizontal plane. The first end of each S-shaped tube is connected to a vertically arranged terminal block by a vertically bent tube. The ends of two adjacent S-shaped tubes are connected by a horizontally bent tube.

[0010] As a further description of the above technical solution, the support frame is integrally connected to the inner shell.

[0011] As a further description of the above technical solution, the inner shell has a receiving groove formed on the side opposite to the outer shell, and the end of the terminal block opposite to the vertically bent tube extends from the heating cavity into the receiving groove.

[0012] As a further description of the above technical solution, a temperature fuse is also provided in the receiving tank to monitor the temperature of the bottom wall of the receiving tank.

[0013] The temperature fuse is connected to the busbar of the heating tube. When the actual temperature detected by the temperature fuse is equal to the set threshold, the temperature fuse melts.

[0014] As a further description of the above technical solution, the temperature fuse is located at the center of the receiving groove and / or at the upper temperature limit of the receiving groove.

[0015] As a further description of the above technical solution, the bottom wall of the receiving groove is recessed inward with at least one recess, and each recess extends between two adjacent S-shaped tubes.

[0016] The recess is equipped with a first temperature sensor that is electrically connected to the controller of the high-voltage integrated module electric compressor.

[0017] As a further description of the above technical solution, the outer shell is provided with a liquid inlet and a liquid outlet for the heat-conducting medium to enter and exit the heating chamber.

[0018] As a further description of the above technical solution, a second temperature sensor is provided at the liquid inlet; and a third temperature sensor is provided at the liquid outlet.

[0019] As a further description of the above technical solution, the connection between the outer shell and the inner shell is sealed.

[0020] This utility model also provides a high-pressure integrated module electric compressor, including the resistance heating module and the compressor body as described above, wherein the inner shell of the resistance heating module is connected to the compressor body on the side opposite to its outer shell.

[0021] Based on the above technical solutions, the outstanding effects of this utility model are as follows:

[0022] 1. In the resistance heating module provided by this utility model, the inner shell is located inside the outer shell and forms a heating cavity with the outer shell. The heating tube assembly is embedded in the support frame inside the heating cavity to heat the heat-conducting medium flowing in the heating cavity. The first ends of the multiple S-shaped tubes located on the same horizontal plane are all connected to vertically set terminals by vertically bent tubes; the ends of two adjacent S-shaped tubes are connected by horizontally bent tubes. This is equivalent to the entire heating tube assembly rotating three-dimensionally in the heat exchange cavity, which has a higher space utilization rate. This can effectively reduce the volume of the heater, increase the energy density to a greater extent, and make its heating effect on the heat-conducting medium in the heat exchange cavity better.

[0023] 2. In the resistance heating module provided by this utility model, the support frame and the inner shell are integrally connected, which further improves the fixing strength of the heating tube assembly.

[0024] 3. In the resistance heating module provided by this utility model, a temperature fuse is also provided in the receiving tank to monitor the temperature of the bottom wall of the receiving tank; the temperature fuse is connected to the busbar of the heating tube. When the actual temperature detected by the temperature fuse is equal to the set threshold, the temperature fuse melts, which effectively avoids serious failure of the resistance heater and ensures the safety of the resistance heater. Attached Figure Description

[0025] Figure 1 This is an exploded view of the resistance heating module in an embodiment of this utility model;

[0026] Figure 2 This is a cross-sectional view of the resistance heating module in an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the heating tube assembly in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the structure of the resistance heating module integrated on the compressor body in an embodiment of this utility model.

[0029] Explanation of icon numbers:

[0030] 1. Outer shell; 2. Inner shell; 3. Heating chamber; 4. Support frame; 5. S-shaped tube; 6. Vertical bend tube; 7. Terminal; 8. Horizontal bend tube; 9. Receiving groove; 10. Temperature fuse; 11. Recess; 12. First temperature sensor; 13. Liquid inlet; 14. Liquid outlet; 15. Second temperature sensor; 16. Third temperature sensor; 17. Sealing ring; 18. Compressor body. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper," "middle," "lower," "inner," "outer," "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The implementation methods of this utility model will now be described based on its overall structure.

[0033] Please see Figures 1 to 4 This utility model discloses a resistance heating module, which includes:

[0034] Outer shell 1;

[0035] Inner shell 2, the inner shell 2 is disposed inside the outer shell 1, and a heating cavity 3 is formed between the inner shell 2 and the outer shell 1 to allow the flow of heat-conducting medium;

[0036] Support frame 4, which is disposed inside the heating cavity 3;

[0037] A heating tube assembly is embedded in the support frame 4 to heat the heat-conducting medium. The heating tube assembly includes multiple S-shaped tubes 5 located in the same horizontal plane. The first end of each S-shaped tube 5 is connected to a vertically arranged terminal 7 by a vertically bent tube 6. The ends of two adjacent S-shaped tubes 5 are connected by a horizontally bent tube 8.

[0038] With the above structure, the inner shell 2 is located inside the outer shell 1 and forms a heating cavity 3 with the outer shell 1. The heating tube assembly is embedded in the support frame 4 to heat the heat-conducting medium flowing in the heating cavity 3. The first ends of the multiple S-shaped tubes 5 located on the same horizontal plane are connected to the vertically arranged terminals 7 by vertically bent tubes 6; the ends of two adjacent S-shaped tubes 5 are connected by horizontally bent tubes 8. It is equivalent to the entire heating tube assembly rotating three-dimensionally in the heat exchange cavity, which has a higher space utilization rate, thereby effectively reducing the volume of the heater and increasing the energy density to a greater extent, so as to make its heating effect on the heat-conducting medium in the heat exchange cavity better.

[0039] Please see Figure 1 and Figure 2 Specifically, in this embodiment, the support frame 4 is integrally connected to the inner shell 2 to further improve the fixing strength of the heating tube assembly. For example, the support frame 4 and the inner shell 2 can be formed by integral forging.

[0040] Specifically, in this embodiment, the inner shell 2 has a receiving groove 9 formed on the side opposite to the outer shell 1, and the terminal 7 extends from the heating cavity 3 into the receiving groove 9 at the end opposite to the vertical bending tube 6 to connect with an external power source.

[0041] Specifically, in this embodiment, a temperature fuse 10 is also provided in the receiving tank 9 to monitor the temperature of the bottom wall of the receiving tank 9. The two pins of the temperature fuse 10 are connected to the busbar of the heating tube. When the actual temperature detected by the temperature fuse 10 equals a set threshold, the temperature fuse 10 melts, thereby effectively preventing serious failure of the resistive heater and ensuring its safe use. Furthermore, the temperature fuse 10 is located in the center of the receiving tank 9 and / or at the upper temperature limit position of the receiving tank 9 (i.e., the position with the highest temperature). When an IGBT (Insulated Gate Bipolar Transistor) short circuit or other reasons cause uncontrolled dry burning of the heater, the temperature of the bottom wall of the receiving tank 9 reaches the melting point, and the temperature fuse 10 melts to cut off the connection between the heater and the external power supply.

[0042] Specifically, in this embodiment, the bottom wall of the receiving groove 9 has an inwardly recessed portion 11, which extends between two adjacent S-shaped tubes 5. A first temperature sensor 12, electrically connected to the high-pressure integrated module electric compressor controller, is disposed within the recess 11 to monitor the temperature between the two S-shaped tubes. Of course, in other embodiments, multiple recesses 11 can be provided to correspondingly house multiple first temperature sensors 12, thereby detecting the temperature between multiple sets of adjacent S-shaped tubes 5.

[0043] Specifically, in this embodiment, the outer shell 1 is provided with a liquid inlet 13 and a liquid outlet 14. The liquid inlet 13 is used for the heat-conducting medium to flow into the heating chamber 3 and be heated. After the heat-conducting medium is heated, it will flow out of the heating chamber 3 from the liquid outlet 14.

[0044] Specifically, in this embodiment, a second temperature sensor 15 is provided at the liquid inlet 13 to monitor the temperature of the heat-conducting medium at the liquid inlet 13; and a third temperature sensor 16 is provided at the liquid outlet 14 to monitor the temperature of the heat-conducting medium at the liquid outlet 14.

[0045] Please see Figure 1 Specifically, in this embodiment, in order to ensure the airtightness of the heating cavity 3, the connection between the outer shell 1 and the inner shell 2 is sealed, for example, a sealing ring 17 is provided at the connection between the two.

[0046] Please see Figures 1 to 4 Specifically, this utility model also discloses a high-pressure integrated module electric compressor, including the resistance heating module and the compressor body 18 as described above. The inner shell 2 of the resistance heating module is connected to the compressor body 18 on the side opposite to its outer shell 1.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any changes, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A resistance heating module, characterized in that, include: outer shell; An inner shell is disposed inside the outer shell, and a heating cavity is formed between the inner shell and the outer shell to allow the flow of a heat-conducting medium. A support frame is disposed within the heating cavity; A heating tube assembly is embedded in the support frame to heat the heat-conducting medium. The heating tube assembly includes multiple S-shaped tubes located in the same horizontal plane. The first end of each S-shaped tube is connected to a vertically arranged terminal block by a vertically bent tube. The ends of two adjacent S-shaped tubes are connected by a horizontally bent tube.

2. The resistance heating module according to claim 1, characterized in that, The support frame is integrally connected to the inner shell.

3. The resistance heating module according to claim 1, characterized in that, The inner housing has a receiving groove formed on the side opposite to the outer housing, and the end of the terminal block opposite to the vertically bent tube extends from the heating cavity into the receiving groove.

4. The resistance heating module according to claim 3, characterized in that, The receiving tank is also equipped with a temperature fuse to monitor the temperature of the bottom wall of the receiving tank; The temperature fuse is connected to the busbar of the heating tube. When the actual temperature detected by the temperature fuse is equal to the set threshold, the temperature fuse melts.

5. The resistance heating module according to claim 4, characterized in that, The temperature fuse is located at the center of the receiving groove and / or at the upper temperature limit of the receiving groove.

6. The resistance heating module according to claim 3, characterized in that, The bottom wall of the receiving groove is recessed inward with at least one recess, and each recess extends between two adjacent S-shaped tubes. The recess is equipped with a first temperature sensor that is electrically connected to the controller of the high-voltage integrated module electric compressor.

7. The resistance heating module according to claim 1, characterized in that, The outer casing is provided with an inlet and an outlet for the heat-conducting medium to enter and exit the heating chamber.

8. The resistance heating module according to claim 7, characterized in that, A second temperature sensor is provided at the liquid inlet; a third temperature sensor is provided at the liquid outlet.

9. The resistance heating module according to claim 1, characterized in that, The connection between the outer shell and the inner shell is sealed.

10. A high-pressure integrated modular electric compressor, characterized in that, Includes a resistance heating module and a compressor body as described in any one of claims 1-9, wherein the inner shell of the resistance heating module is connected to the compressor body on the side opposite to its outer shell.

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