Electric compressor integrated with gas-liquid separator

Abstract

The utility model relates to an electric compressor, in particular to an electric compressor integrated with a gas-liquid separator, which comprises a compressor body. A controller; the gas-liquid separator comprises a separation cavity, a separation air inlet pipe, a refrigerant air inlet pipe and an oil return pipe, the input end of the separation air inlet pipe is used for injecting a refrigerant, the output end of the separation air inlet pipe is arranged in the separation cavity in a penetrating mode, the input end of the refrigerant air inlet pipe is used for leading out the separated refrigerant, and the output end of the refrigerant air inlet pipe is arranged in the separation cavity in a penetrating mode; the oil return pipe is communicated between the separation cavity and the oil pool; the output end of the separation air inlet pipe is arranged in a manner of avoiding the input end of the refrigerant air inlet pipe, so that oil in a refrigerant can be sprayed to the inner wall of the separation cavity and flows out along the oil return pipe; and the gas-liquid separator is mounted on one side of the compressor body. According to the compressor, the gas-liquid separator is arranged on one side of the compressor body, the function of separating oil in a refrigerant is provided, the integration degree is high, materials are saved, and leakage is avoided.

Description

Technical Field

[0001] This utility model relates to an electric compressor, and more particularly to an electric compressor with an integrated gas-liquid separator. Background Technology

[0002] The description in this section provides only background information related to the disclosure of this utility model and does not constitute prior art.

[0003] In the current development of electric vehicles, more and more problems are becoming increasingly prominent. For example, conventional gas-liquid separators and compressors are separate structures. During use, the gas-liquid separator needs to be fixed to the frame, and then connected to the air intake chamber of the compressor body through pipelines. This occupies a large area and makes on-site installation difficult. Therefore, it is necessary to adjust the structure of the gas-liquid separator to reduce its space occupation and improve the stability of its installation structure.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] The purpose of this invention is to provide an electric compressor with an integrated gas-liquid separator. By placing the gas-liquid separator on one side of the compressor body, it can provide the function of separating oil from the refrigerant. It has a high degree of integration, saves materials, and avoids leakage.

[0006] To achieve the above objectives, this utility model discloses an electric compressor with an integrated gas-liquid separator, wherein the electric compressor of the integrated gas-liquid separator comprises:

[0007] The compressor body is provided with an oil sump;

[0008] A controller, which is installed on one side of the compressor body;

[0009] A gas-liquid separator includes a separation chamber, a separation inlet pipe, a refrigerant inlet pipe, and an oil return pipe. The inlet end of the separation inlet pipe is used to introduce refrigerant, and the outlet end of the separation inlet pipe passes through the separation chamber. The inlet end of the refrigerant inlet pipe is used to lead out the separated refrigerant, and the outlet end of the refrigerant inlet pipe passes through the separation chamber. The oil return pipe connects the separation chamber and the oil sump. The outlet end of the separation inlet pipe is positioned to avoid the inlet end of the refrigerant inlet pipe, so that oil in the refrigerant can be sprayed onto the inner wall of the separation chamber and flow out along the oil return pipe.

[0010] The gas-liquid separator is installed on one side of the compressor body.

[0011] As a further description of the above technical solution, the output end of the separate intake pipe and the input end of the refrigerant intake pipe have an angle that is not 0 degrees or 180 degrees.

[0012] As a further description of the above technical solution, the output end of the separate intake pipe is configured with multiple branch outlets, wherein the orientation of each branch outlet of the separate intake pipe is different.

[0013] As a further description of the above technical solution, the branch outlets of the separate air intake pipe are configured to be two, the included angle between the two branch outlets of the separate air intake pipe is 180 degrees, and the two branch outlets of the separate air intake pipe extend perpendicularly to the extension direction of the input end of the refrigerant air intake pipe.

[0014] As a further description of the above technical solution, the input end of the refrigerant intake pipe is configured with multiple branch inlets, wherein the orientation of each branch inlet of the refrigerant intake pipe is different.

[0015] As a further description of the above technical solution, the refrigerant intake pipe has two branch inlets, the included angle between the two branch inlets of the refrigerant intake pipe is 180 degrees, and the two branch inlets of the refrigerant intake pipe extend perpendicularly to the extension direction of the output end of the separate intake pipe.

[0016] As a further description of the above technical solution, the gas-liquid separator also includes an isolation net, which is disposed in the separation chamber, and the output end of the separation inlet pipe passes through the isolation net. The isolation net is used to isolate the separation chamber into two sub-spaces, and the oil return pipe is disposed on the side of the isolation net away from the refrigerant inlet pipe.

[0017] As a further description of the above technical solution, the gas-liquid separator is installed on the outer wall surface of the compressor body.

[0018] As a further description of the above technical solution, the gas-liquid separator is installed on the inner wall of the compressor body, wherein the separation chamber is integrally formed with the compressor body.

[0019] As a further description of the above technical solution, the gas-liquid separator is installed between the compressor body and the controller, wherein the separation chamber is integrally formed with the compressor body.

[0020] Based on the above technical solution, the beneficial effects of this utility model are as follows:

[0021] 1. The electric compressor with integrated gas-liquid separator of this utility model can provide the function of separating oil in refrigerant by setting the gas-liquid separator on one side of the compressor body. Specifically, since the structure of the gas-liquid separator is set close to the compressor body, the path connecting the refrigerant inlet pipe and the inlet chamber of the gas-liquid separator is shortened. In some embodiments, the connecting pipe that must be installed after the separation chamber in the separate setting can be saved, reducing material input and reducing the number of leakage points, thereby reducing the probability of leakage during the refrigerant transportation process.

[0022] 2. The gas-liquid separator can be directly connected to the compressor body or integrally formed, which can ensure the stability of the connection without the need for additional reinforcement components. On the other hand, it saves the space occupied by separate placement, making it suitable for small space scenarios. In addition, the gas-liquid separator can be directly positioned by the compressor body, reducing the complexity of gas-liquid separator installation and improving installation efficiency.

[0023] 3. The port pipes used for refrigerant separation can be set at the output end of the separation inlet pipe or the input end of the refrigerant inlet pipe, and the number of pipes can also be set as needed, making the layout more flexible and further reducing space occupation.

[0024] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, the drawings provided are for reference and illustration only and are not intended to limit this utility model. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments or prior art of this specification, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this specification. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of an external gas-liquid separator for an electric compressor with an integrated gas-liquid separator, as provided in the embodiments of this specification.

[0027] Figure 2 This is a schematic diagram of an integrated gas-liquid separator for an electric compressor, as provided in the embodiments of this specification.

[0028] Figure 3 This is a schematic diagram of the built-in gas-liquid separator of an electric compressor with an integrated gas-liquid separator provided in the embodiments of this specification;

[0029] Figure 4This is a schematic diagram of an electric compressor with an integrated gas-liquid separator provided in the embodiments of this specification, in which the gas-liquid separator is disposed between the controller and the compressor body;

[0030] In the picture:

[0031] 1. Compressor body; 11. Oil sump;

[0032] 2. Controller;

[0033] 3. Gas-liquid separator; 31. Separation chamber; 32. Separation inlet pipe; 33. Refrigerant inlet pipe; 34. Oil return pipe; 35. Isolation net. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0035] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0036] It should be understood that while terms such as "first," "second," and "third" may be used in this document to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term "or" as used herein should, as appropriate, include any combination of one or more of the related listed items.

[0037] Please see Figure 1-4 This embodiment describes an electric compressor with an integrated gas-liquid separator, wherein the electric compressor with the integrated gas-liquid separator includes:

[0038] Compressor body 1, compressor body 1 is provided with oil sump 11;

[0039] Controller 2 is installed on one side of the compressor body 1;

[0040] The gas-liquid separator 3 includes a separation chamber 31, a separation inlet pipe 32, a refrigerant inlet pipe 33, and an oil return pipe 34. The input end of the separation inlet pipe 32 is used to fill the refrigerant, and the output end of the separation inlet pipe 32 passes through the separation chamber 31. The input end of the refrigerant inlet pipe 33 is used to lead out the separated refrigerant, and the output end of the refrigerant inlet pipe 33 passes through the separation chamber 31. The oil return pipe 34 connects the separation chamber 31 and the oil sump 11. The output end of the separation inlet pipe 32 is arranged to avoid the input end of the refrigerant inlet pipe 33 so that the oil in the refrigerant can be sprayed onto the inner wall of the separation chamber 11 and flow out along the oil return pipe 34.

[0041] Among them, the gas-liquid separator 3 is installed on one side of the compressor body 1.

[0042] Specifically, in the above structure, an oil sump 11 and an intake chamber are provided on one side of the compressor body 1. The oil sump 11 is connected to the separation chamber 31 through the oil return pipe 34, and the intake chamber is connected to the separation chamber through the refrigerant intake pipe 33. During system operation, the separation intake pipe 32 receives refrigerant from the system and delivers it to the separation chamber 31. Since the output end of the separation intake pipe 32 and the input end of the refrigerant intake pipe 33 in the separation chamber 31 are arranged to avoid each other, the liquid oil sprayed from the refrigerant intake pipe 33 will not enter the input end of the refrigerant intake pipe 33, but will splash onto the inner wall of the separation chamber 31 or the outer wall of the refrigerant intake pipe 33, and gradually flow down to the position of the oil return pipe 34 on one side of the separation chamber 31 by gravity and other factors. There is no protrusion at the joint between the oil return pipe 34 and the separation chamber 31, so that the accumulated oil can flow directly out from the oil return pipe 34 and finally flow to the oil sump 11 of the compressor body 1 to accumulate. Meanwhile, the refrigerant in gaseous form directly enters the inlet end of the refrigerant inlet pipe 33 and then enters the intake chamber of the compressor body 1 through the refrigerant inlet pipe 33. This achieves the separation of the refrigerant.

[0043] In the above structure, the gas-liquid separator 3 can be set on one side of the compressor body 1 to provide the function of separating oil in the refrigerant. Specifically, since the structure of the gas-liquid separator 3 is set close to the compressor body 1, the path of the refrigerant inlet pipe 32 of the gas-liquid separator 3 connecting with the inlet chamber is shortened. In some embodiments, the connecting pipe that must be connected after the separation chamber 31 in the separate setting can be saved, reducing material input and reducing the number of leakage points, thereby reducing the probability of leakage during the refrigerant transportation process.

[0044] Based on the above structure, such as Figure 1 As shown, the compressor body 1 is configured to have a functional section for piston compression. Figure 1The middle and right sides, and the oil tank 11 for containing liquid oil, in Figure 1 The oil tank 11 is located on the left side of the compressor body 1. In this embodiment, the oil tank 11 covers about one-third to one-tenth of the volume of the compressor body 1, so as to allow a sufficient volume of liquid oil to be drawn in and compressed.

[0045] In this embodiment, an air inlet chamber for containing refrigerant can be provided on the same side of the oil sump 11. The air inlet chamber structure and the oil sump 11 together form the compressor body 1. Figure 1 The gas-liquid containment area on the left side, as shown, is separated from the compression functional areas on the middle and right sides, thus exhibiting high structural stability.

[0046] In this embodiment, controller 2 is set as follows: Figure 1 On the left side of the oil tank 11, the controller 2 is adjacent to the controller cover plate and is mechanically connected to the outer shell on the side of the oil tank 11. Specifically, in addition to fastener connection, the controller cover plate can also be installed by glue connection, welding or snap-fit ​​connection, etc.

[0047] In the configuration of the gas-liquid separator 3, the separation chamber 31 is set as a cylindrical structure with circular cross-sections at both ends, and its inner wall has a relatively smooth geometric curve, which helps the flow of liquid oil. Specifically, in some other embodiments, it can also be set as a regular rectangle as needed to achieve better sealing effect, lower cost, and tighter connection with the compressor body 1.

[0048] The separate air intake pipe 32 and the refrigerant air intake pipe 33 are designed as regular tubular structures. The separate air intake pipe 32 and the refrigerant air intake pipe 33 can turn at a preset angle at some positions according to the needs of the pipeline layout, so as to achieve docking with external pipelines or the interior of the separation chamber 31.

[0049] In this embodiment, the oil return pipe 34 is configured as a regular tube that is thinner than the separate air intake pipe 32 and the refrigerant air intake pipe 33. In this embodiment, the oil return pipe 34 is also bent in the middle part according to the need to connect with the oil sump 11.

[0050] In this embodiment, the return oil pipe 34 can be positioned on the side of the separation chamber 31 closer to the bottom and away from the end of the separation air inlet pipe 32 and the refrigerant air inlet pipe 33, which helps to discharge the liquid oil in the separation chamber 31 more evenly.

[0051] In one embodiment, the output end of the separate intake pipe 32 and the input end of the refrigerant intake pipe 33 can be arranged in parallel, but they are intersected, so that the output end of the separate intake pipe 32 and the input end of the refrigerant intake pipe 33 can still avoid each other.

[0052] In another embodiment, in the electric compressor of the integrated gas-liquid separator of this invention, the output end of the separating inlet pipe 32 and the input end of the refrigerant inlet pipe 33 have an angle that is neither 0 degrees nor 180 degrees. That is, the orientation of the output end of the separating inlet pipe 32 directly avoids the orientation of the input end of the refrigerant inlet pipe 33.

[0053] In this embodiment, considering the needs of cost, structural layout and structural strength, the main body of the middle position of the separation inlet pipe 32 and the refrigerant inlet pipe 33 is set as a straight line parallel to the separation cavity 31. Therefore, the output end of the separation inlet pipe 32 can be a bent arc, or the input end of the refrigerant inlet pipe 33 can be a bent arc, thus achieving the need for mutual avoidance.

[0054] The following are some embodiments derived from the above-described structure with an arc-shaped bend:

[0055] Example 1

[0056] like Figure 1 As shown, the gas-liquid separator 3 is installed on the outer wall of the compressor body 1. In this embodiment, the input end of the refrigerant inlet pipe 33 is configured with multiple branch inlets, each branch inlet of the refrigerant inlet pipe 33 having a different orientation. There are two branch inlets of the refrigerant inlet pipe 33, with an included angle of 180 degrees between them. The two branch inlets of the refrigerant inlet pipe 33 extend perpendicularly to the extension direction of the output end of the separation inlet pipe 32. In actual use, the oil in the refrigerant inlet pipe 33 is directly sprayed onto the pipe wall between the two branches at the input end of the refrigerant inlet pipe 33, and after dripping into the separation chamber 31, flows down the inner wall surface of the separation chamber 31 to the return oil pipe 34 on the bottom side for discharge. In this embodiment, the gas-liquid separator 3 is directly installed on the outside of the compressor body 1, facilitating maintenance and installation, and reducing costs.

[0057] Example 2

[0058] like Figure 2As shown, the gas-liquid separator 3 is installed on the inner wall of the compressor body 1, wherein the separation chamber 31 is integrally formed with the compressor body 1. In this embodiment, the output end of the separation inlet pipe 32 is configured as multiple branch outlets, wherein the branch outlets of each separation inlet pipe 32 have different orientations. There are two branch outlets of the separation inlet pipe 32, and the included angle between the two branch outlets of the separation inlet pipe 32 is 180 degrees. The branch outlets of the two separation inlet pipes 32 extend perpendicularly to the extension direction of the input end of the refrigerant inlet pipe 33. In actual use, the oil in the separation inlet pipe 32 is directly sprayed onto the inner walls of the upper and lower sides of the separation chamber 31, and flows down the inner wall surface of the separation chamber 31 to the oil return pipe 34 on the bottom side for discharge. The shape of the separation chamber 31 in this embodiment fits the outer skin of the compressor body 1, which on the one hand ensures the stability of the connection, and on the other hand saves the space occupied by a separate arrangement, making it suitable for small space scenarios. In addition, the gas-liquid separator 3 can be directly positioned through the compressor body 1, reducing the complexity of the gas-liquid separator 3 installation and improving the installation efficiency.

[0059] Example 3

[0060] like Figure 3 As shown, Figure 1 As shown, the gas-liquid separator 3 is installed on the inner wall of the compressor body 1, meaning it is directly located within the separation chamber 31. In this embodiment, the input end of the refrigerant inlet pipe 33 is configured with multiple branch inlets, each with a different orientation. There are two branch inlets on the refrigerant inlet pipe 33, with an angle of 180 degrees between them. These two branch inlets extend perpendicularly to the direction of the output end of the separation inlet pipe 32. In actual use, the oil in the refrigerant inlet pipe 33 is directly sprayed onto the pipe wall between the two branches at the input end of the refrigerant inlet pipe 33, and after dripping into the separation chamber 31, flows along the inner wall surface of the separation chamber 31 to the return oil pipe 34 on the bottom side for discharge. In this embodiment, the overall structure of the gas-liquid separator 3 is directly installed inside the separation chamber 31; therefore, no additional reinforcing components are required, and the airtightness is ensured by the housing of the compressor body 1.

[0061] Example 4

[0062] like Figure 4As shown, the gas-liquid separator 3 is installed between the compressor body 1 and the controller 2, wherein the separation chamber is integrally formed with the compressor body. In this embodiment, the output end of the separation inlet pipe 32 is configured as multiple branch outlets, wherein the branch outlets of each separation inlet pipe 32 have different orientations. There are two branch outlets of the separation inlet pipe 32, and the included angle between the two branch outlets of the separation inlet pipe 32 is 180 degrees. The branch outlets of the two separation inlet pipes 32 extend perpendicularly to the extension direction of the input end of the refrigerant inlet pipe 33. In the actual implementation of this embodiment, the separation chamber 31 can be directly connected to the inlet chamber of the compressor body 1, which saves more materials, eliminates the need for separate connecting pipes, and allows the controller 2 itself to form a sealed protection for the gas-liquid separator 3 structure.

[0063] Furthermore, the gas-liquid separator 3 also includes an isolation mesh 35, which is disposed in the separation chamber 31, and the output end of the separation inlet pipe 32 passes through the isolation mesh 35. The isolation mesh 35 is used to isolate the separation chamber 31 into two sub-spaces, and the oil return pipe 34 is disposed on the side of the isolation mesh 35 away from the refrigerant inlet pipe 33. With the above structure, during the oil flow process, it must pass through the filtration of the isolation mesh 35 structure before flowing to the oil return pipe 34 on the side of the isolation mesh 35, thus ensuring the purity of the oil and preventing refrigerant from entering the oil return pipe 34.

[0064] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the scope of the patent application of the present utility model. Therefore, all equivalent technical changes made using the contents of the present utility model specification and drawings are included in the scope of the patent application of the present utility model.

[0065] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] Although this application has been described by way of examples, those skilled in the art will know that this application has many modifications and variations without departing from the spirit of this application, and it is intended that the appended embodiments include these modifications and variations without departing from this application.

Claims

1. An electric compressor integrated with a gas-liquid separator, characterized by, The electric compressor of the integrated gas-liquid separator comprises: a compressor body provided with an oil pool; a controller installed on one side of the compressor body; a gas-liquid separator comprising a separation cavity, a separation inlet pipe, a refrigerant inlet pipe, and an oil return pipe, an input end of the separation inlet pipe being used for pouring in refrigerant, an output end of the separation inlet pipe being provided through the separation cavity, an input end of the refrigerant inlet pipe being used for leading out separated refrigerant, an output end of the refrigerant inlet pipe being provided through the separation cavity, and the oil return pipe being communicated between the separation cavity and the oil pool; wherein the output end of the separation inlet pipe is provided to avoid the input end of the refrigerant inlet pipe, so that oil in the refrigerant can be sprayed to the inner wall of the separation cavity and flow out along the oil return pipe. The gas-liquid separator is installed on one side of the compressor body.

2. An integrated gas-liquid separator electric motor compressor according to claim 1, characterized in that: The separation inlet pipe and the refrigerant inlet pipe have an included angle other than 0 or 180 degrees.

3. An integrated gas and liquid separator electric motor compressor as set forth in claim 2, characterized in that: The output end of the separation inlet pipe is provided as multiple branch outlets, and each branch outlet has a different orientation.

4. An integrated gas-liquid separator electric motor compressor according to claim 3, characterized in that: The separation inlet pipe has two branch outlets, and the two branch outlets have an included angle of 180 degrees and extend perpendicularly to the extension direction of the input end of the refrigerant inlet pipe.

5. An integrated gas and liquid separator electric motor compressor as set forth in claim 2, characterized by: The input end of the refrigerant inlet pipe is provided as multiple branch inlets, and each branch inlet has a different orientation.

6. An integrated gas and liquid separator electric motor compressor as set forth in claim 3, characterized in that: The refrigerant inlet pipe has two branch inlets, and the two branch inlets have an included angle of 180 degrees and extend perpendicularly to the extension direction of the output end of the separation inlet pipe.

7. An integrated gas and liquid separator electric motor compressor as set forth in claim 1, characterized by: The gas-liquid separator further comprises a separation net provided in the separation cavity and through which the output end of the separation inlet pipe is provided, the separation net being used for separating the separation cavity into two subspaces, and the oil return pipe being provided on the side of the separation net away from the refrigerant inlet pipe.

8. An integrated gas and liquid separator electric motor compressor as set forth in claim 1, characterized in that: The gas-liquid separator is installed on the outer wall surface of the compressor body.

9. An integrated gas and liquid separator electric motor compressor as set forth in claim 1, characterized in that: The gas-liquid separator is installed on the inner wall surface of the compressor body, and the separation cavity is integrally formed with the compressor body.

10. An integrated gas and liquid separator electric motor compressor as set forth in claim 1, characterized in that: The gas-liquid separator is installed between the compressor body and the controller, and the separation cavity is integrally formed with the compressor body.

Images