Compressor detection device and compressor

Abstract

The utility model provides a compressor detection device and a compressor, the detection device comprises a control valve arranged between an exhaust cavity and an air suction cavity, the control valve is used for controlling the flow of air flowing back to the air suction cavity from the exhaust cavity, the control valve is provided with a first detection cavity used for being communicated with the exhaust cavity, and the first detection cavity is provided with a second detection cavity used for being communicated with the air suction cavity. The first detection part is arranged in the first detection cavity, and the first detection part at least can detect the pressure of the exhaust cavity; and / or the control valve is provided with a second detection cavity used for being communicated with the air suction cavity and a second detection part arranged in the second detection cavity, and the second detection part at least can detect the pressure of the air suction cavity. According to the detection device of the compressor, the control valve is used for controlling the flow of air flowing back to the air suction cavity, and meanwhile, the first detection cavity and / or the second detection cavity are / is arranged on the control valve, so that a basis is provided for the detection part and the control valve to share the same connector; therefore, the integrated arrangement of the first detection part and / or the second detection part and the control valve is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a detection device for a compressor; at the same time, the utility model also relates to a compressor provided with the detection device. Background Art

[0002] Compressors are currently equipped with pressure and / or temperature detection devices to monitor their operating status, prevent failures, and protect the equipment. In practice, these sensors are typically located at the intake or exhaust ports, resulting in a dispersed sensor layout and hindering the integrated design of the compressor.

[0003] In addition, in order to increase the exhaust temperature of the compressor, a bypass circuit is usually added between the exhaust chamber of the compressor and the gas-liquid separator, and a bypass valve is connected in series in the bypass circuit. Through the bypass valve on the bypass circuit, a certain proportion of high-temperature and high-pressure refrigerant is diverted to the gas-liquid separator container at the suction end of the compressor, thereby increasing the suction pressure and suction temperature of the compressor, and entering the compressor for secondary compression, thereby increasing the exhaust pressure and exhaust temperature. Since both the suction and exhaust pressures are increased, the input power of the motor is also increased, so that the overall output power is improved.

[0004] However, this solution of setting up a bypass loop means that the part of the gas that is directly diverted back to the compressor at the exhaust end does not flow through the cabin heat exchanger and cannot be used by the passenger compartment, which will inevitably cause a certain amount of heat loss. The greater the amount of diversion, the greater the heat loss. Utility Model Content

[0005] In view of this, the present invention aims to provide a detection device for a compressor to facilitate integrated design.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0007] A detection device for a compressor, wherein a scroll assembly of the compressor is formed with an exhaust chamber, an intermediate chamber and an intake chamber arranged in sequence from the inside to the outside along the radial direction of the scroll assembly; the detection device includes a control valve arranged between the exhaust chamber and the intake chamber, the control valve is used to adjust the flow rate of gas flowing back into the intake chamber, the control valve is provided with a first detection chamber and a first detection part arranged in the first detection chamber, the first detection part is capable of at least detecting the pressure of the exhaust chamber; and / or, the control valve is provided with a second detection chamber for communicating with the intake chamber, and a second detection part is arranged in the second detection chamber, the second detection part is capable of at least detecting the pressure of the intake chamber.

[0008] Furthermore, the first detection chamber is arranged in the valve stem of the control valve, and the valve stem is provided with a first communicating channel for connecting the first detection chamber with the valve chamber of the control valve; and / or, the second detection chamber is arranged on the valve seat of the control valve, and the valve seat is provided with a second communicating channel for connecting the second detection chamber with the suction chamber.

[0009] Furthermore, relative to the inlet of the control valve, the first detection chamber is communicated with the other side of the valve chamber of the control valve, and / or relative to the outlet of the control valve, the second detection chamber is communicated with the other side of the valve chamber of the control valve.

[0010] Furthermore, a filter portion for filtering gas is provided at the inlet of the control valve.

[0011] Compared with the prior art, the present invention has the following advantages:

[0012] The detection device of the compressor described in the present invention provides a basis for the detection part and the control valve to share the same connector by arranging the first detection cavity and / or the second detection cavity on the control valve, thereby facilitating the integrated arrangement of the first detection part and / or the second detection part and the control valve, and controlling the flow rate of the gas returning to the suction cavity through the control valve. Compared with the solution of arranging a bypass circuit between the exhaust cavity and the gas-liquid separator in the prior art, it is not only beneficial to reduce pressure and temperature losses and costs, but also beneficial to improve the energy efficiency of the compressor.

[0013] In addition, the placement of the first detection chamber on the valve stem and the provision of the first connecting channel facilitate the flow of gas from the exhaust chamber into the first detection chamber, bringing the pressure and other parameters of the first detection chamber closer to those of the exhaust chamber, thereby improving the detection accuracy of the first detection unit. The placement of the second detection chamber on the valve seat and the provision of the second connecting channel facilitate the connection between the second detection chamber and the suction chamber, thereby improving the detection accuracy of the second detection unit. The first detection chamber is positioned relative to the inlet of the control valve, facilitating layout and implementation, while also bringing the pressure and other parameters of the first detection chamber closer to those of the exhaust chamber. The second detection chamber is positioned relative to the outlet of the control valve, bringing the pressure and other parameters of the second detection chamber closer to those of the suction chamber, making it easier to implement. The provision of the filter section facilitates the cleanliness of the passing gas and prevents the control valve from becoming clogged, which could affect its performance.

[0014] In addition, another object of the present invention is to propose a compressor, comprising a shell having an accommodating cavity and a scroll assembly arranged in the accommodating cavity, and a detection device as described above, wherein a return channel is provided between the exhaust cavity and the intake cavity in the scroll assembly, and the control valve is arranged on the return channel.

[0015] Furthermore, the reflux channel includes a main channel provided on the shell, the control valve is provided in the main channel, the main channel has a first part connected to the inlet of the control valve, and a second part connected to the outlet of the control valve; and the main channel is connected to the exhaust chamber through the first part, and is connected to the intake chamber through the second part; the first detection chamber is connected to the first part, and / or the second detection chamber is connected to the second part.

[0016] Furthermore, the reflux channel also includes a first channel and a second channel provided on the shell; the first channel is connected between the exhaust chamber and the first part, and the second channel is connected between the intake chamber and the second part.

[0017] Furthermore, the first channel is in the shape of a groove with a notch arranged toward the exhaust chamber, and a first connecting port connecting the first channel and the exhaust chamber is provided on the fixed scroll in the scroll assembly; and / or, the second channel is in the shape of a groove arranged along the circumference of the scroll assembly, and a second connecting port connecting the second channel and the suction chamber is provided on the fixed scroll.

[0018] Furthermore, the reflux channel includes a first channel provided on the shell and connected to the exhaust chamber, and a second channel connected to the intake chamber; the inlet of the control valve is connected to the exhaust chamber through the first channel, and the outlet of the control valve is connected to the intake chamber through the second channel; the first detection chamber is connected to the inlet end of the valve chamber of the control valve, and / or the second detection chamber is connected to the outlet end of the valve chamber of the control valve.

[0019] Furthermore, relative to the inlet of the control valve, the first detection chamber is communicated with the other side of the valve chamber, and / or relative to the outlet of the control valve, the second detection chamber (302) is communicated with the other side of the valve chamber.

[0020] Furthermore, a first sealing member and a second sealing member are provided between the housing and the control valve; the first sealing member is provided around the inlet of the control valve, and the second sealing member is provided around the outlet of the control valve.

[0021] Compared with the prior art, the present invention has the following advantages:

[0022] The compressor described in the present invention is beneficial to reducing pressure and temperature losses and improving the performance of the compressor by providing a return channel between the exhaust chamber and the suction chamber, and arranging the control valve on the return channel. It is also beneficial to detecting the pressure of the exhaust chamber and / or the suction chamber, thereby facilitating the integrated design of the compressor.

[0023] In addition, the arrangement of the first part and the second part in the main channel allows the gas in the exhaust chamber to first flow into the first part and the first detection chamber, and then flow into the second part, and flow into the intake chamber and the second detection chamber through the second part, which is not only conducive to achieving communication between the exhaust chamber and the intake chamber, but also conducive to improving the detection accuracy of the first detection chamber and / or the second detection chamber. The arrangement of the first channel and the second channel in the reflux channel is conducive to achieving communication between the first part and the exhaust chamber, and communication between the second part and the intake chamber.

[0024] In addition, the groove-shaped first channel and the first connecting port facilitate the communication between the exhaust chamber and the first channel; the second channel is arranged along the circumference of the scroll assembly, and the arrangement of the second connecting port facilitates the improvement of the communication effect between the suction chamber and the second channel. The arrangement of the first channel and the second channel on the shell facilitates the communication between the first part and the exhaust chamber, and the communication between the second part and the suction chamber. The cooperation of the first channel, the second channel and the control valve in the return channel facilitates the communication between the exhaust chamber and the suction chamber. The first detection chamber is connected to the inlet end of the valve chamber, which facilitates the improvement of the detection accuracy of the first detection part, and the second detection chamber is connected to the outlet end of the valve chamber, which facilitates the improvement of the detection accuracy of the second detection part. The arrangement of the first seal and the second seal facilitates the improvement of the communication effect between the valve chamber and the first channel and the second channel.

[0025] In addition, another object of the present invention is to provide a thermal management system, which is provided with the compressor as described above.

[0026] The thermal management system of the present invention, by providing the above-mentioned compressor, is beneficial to improving the performance and integration of the compressor and also beneficial to reducing the production cost of the thermal management system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 This is a schematic structural diagram of a detection device according to Embodiment 1 of the present utility model;

[0029] Figure 2 This is another structural schematic diagram of the detection device according to the first embodiment of the present utility model;

[0030] Figure 3 This is a structural diagram of the compressor according to the second embodiment of the present utility model;

[0031] Figure 4 This is a partial structural diagram of the compressor described in Example 2 of the present utility model.

[0032] Description of reference numerals:

[0033] 1. Housing; 2. Scroll assembly; 3. Control valve; 4. Rotating shaft; 5. Motor assembly;

[0034] 100, air intake cavity; 200, middle cavity; 300, air exhaust cavity;

[0035] 101, housing; 102, end cap; 1021, first channel; 1022, second channel; 103, main channel; 1031, first part; 1032, second part; 104, control box; 105, ventilation channel;

[0036] 201, static scroll; 202, orbiting scroll; 203, first communication port;

[0037] 301, first detection chamber; 3011, first communication channel; 302, second detection chamber; 3021, second communication channel; 303, connector; 304, filter; 305, control valve outlet; 306, third sealing member; 307, first sealing member; 308, valve stem; 309, control valve inlet; 310, second sealing member; 312, valve chamber;

[0038] 401. Connecting portion; 402. Supporting body. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0040] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a particularly static orientation, be constructed, or operate in such a static orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Example 1

[0043] This embodiment relates to a detection device for a compressor, so as to solve the problem in the prior art that the detection devices are dispersedly arranged on the compressor, which is not conducive to integrated design.

[0044] In terms of overall structure, the scroll assembly 2 of the compressor is formed with an exhaust chamber 300, an intermediate chamber 200, and an intake chamber 100, which are arranged in order from the inside to the outside along the radial direction of the scroll assembly 2. The detection device includes a control valve 3 disposed between the exhaust chamber 300 and the intake chamber 100. The control valve 3 is used to regulate the flow rate of gas flowing back into the intake chamber 100. The control valve 3 is provided with a first detection chamber 301 and a first detection portion disposed in the first detection chamber 301, which is capable of detecting at least the pressure in the exhaust chamber 300; and / or the control valve 3 is provided with a second detection chamber 302 for communicating with the intake chamber 100, and a second detection portion disposed in the second detection chamber 302, which is capable of detecting at least the pressure in the intake chamber 100.

[0045] The detection device of the compressor described in this embodiment provides a basis for the detection part and the control valve 3 to share the same connector 303 by setting the first detection cavity 301 and / or the second detection cavity 302 on the control valve 3, thereby facilitating the integrated arrangement of the first detection part and / or the second detection part and the control valve 3, and controlling the flow rate of the gas returning to the suction cavity 100 through the control valve 3. Compared with the solution of setting a bypass circuit between the exhaust cavity 300 and the gas-liquid separator in the prior art, it is not only beneficial to reduce pressure and temperature losses and costs, but also beneficial to improve the energy efficiency of the compressor.

[0046] Based on the above overall introduction, an exemplary structure of the detection device described in this embodiment is as follows Figure 1 As shown in . The structure of the scroll assembly 2 is substantially the same as that of the scroll assembly 2 in the prior art, both comprising a fixed fixed scroll 201 and an orbiting scroll 202 that cooperates with the fixed scroll 201 and can be arranged to move translationally relative to the fixed scroll 201. The suction chamber 100, the intermediate chamber 200, and the exhaust chamber 300 are formed between the spiral sheets of the fixed scroll 201 and the orbiting scroll 202. The exhaust chamber 300 is located in the middle of the scroll assembly 2, the intermediate chambers 200 are arranged on both sides of the exhaust chamber 300, and the suction chambers 100 are also arranged on the outside of the scroll assembly 2.

[0047] The gas flowing into the compressor housing 1 can flow into the scroll assembly 2 through the intake port. As the orbiting scroll 202 moves horizontally relative to the stationary scroll 201, the gas can flow into the intake chamber 100. From there, it flows into the intermediate chamber 200, where it is compressed. The compressed gas then flows into the exhaust chamber 300, resulting in high-temperature, high-pressure gas within the exhaust chamber 300. Part of the gas within the exhaust chamber 300 is discharged through the exhaust port and flows into the evaporator. Another portion of the gas within the exhaust chamber 300 flows back into the intake chamber 100 through the control valve 3, thereby raising the temperature of the gas in the intake chamber 100, and thus, the temperature of the gas in the exhaust chamber 300, thereby enhancing the heating effect of the thermal management system in the winter.

[0048] The control valve 3 in this embodiment can employ a solenoid valve known in the art. For example, the control valve 3 may be provided with a control coil for adjusting the movement of the valve stem 308. By adjusting the position of the valve stem 308, the flow area of the inlet or outlet can be changed, thereby varying the gas flow rate. As a preferred embodiment, the first detection chamber 301 is disposed within the valve stem 308 of the control valve 3. The valve stem 308 is provided with a first connecting passage 3011 for connecting the first detection chamber 301 with the valve chamber 312 of the control valve 3. The placement of the first detection chamber 301 on the valve stem 308 and the provision of the first connecting passage 3011 facilitate the flow of gas from the exhaust chamber 300 into the first detection chamber 301, bringing parameters such as the pressure of the first detection chamber 301 closer to those of the exhaust chamber 300, thereby improving the detection accuracy of the first detection unit.

[0049] In terms of specific structure, Figure 1 As shown in , the control valve inlet 309 and the control valve outlet 305 are both located at the bottom of the entire structure, connected by a valve chamber 312. The connector 303 of the control valve 3 is located at the top of the control valve 3. The first detection chamber 301 is located at the top of the valve stem 308, and the first communication channel 3011 extends downward to the end of the valve stem 308. The first communication channel 3011 flows into the first detection chamber 301, making the pressure in the first detection chamber 301 relatively close to the pressure in the exhaust chamber 300. The pressure detected by the first detection unit can reflect the pressure in the exhaust chamber 300. The arrangement of the first detection chamber 301 and the first detection unit here has the advantages of easy layout and implementation, and good detection effect.

[0050] The first detection part in this embodiment includes a temperature and pressure sensor, which can not only detect the pressure of the exhaust chamber 300, but also detect the temperature of the exhaust chamber 300, thereby having a better detection effect. Of course, the first detection part can also only include a pressure sensor, which also has a better use effect.

[0051] In the specific arrangement and implementation, the first detection part can be electrically connected to the connector 303 on the control valve 3 through a wiring harness, thereby realizing an integrated setting of the first detection part and the control valve 3. Compared with the solution of setting a sensor at the exhaust port, it is beneficial to shorten the length of the wiring harness and reduce the number of connectors, thereby helping to reduce production costs.

[0052] Still refer to Figure 1As shown in FIG, the second detection chamber 302 is disposed on the valve seat of the control valve 3, and a second connecting passage 3021 is provided on the valve seat for connecting the second detection chamber 302 with the suction chamber 100. The second detection chamber 302 is specifically connected to the suction chamber 100 via the second connecting passage 3021, thereby enabling the second detection unit to detect the pressure of the suction chamber 100 with good detection accuracy. In this embodiment, the second detection unit includes a temperature and pressure sensor, which not only detects the pressure of the suction chamber 100, but also the temperature of the suction chamber 100, thereby achieving good detection results. Of course, the second detection unit can also include only a pressure sensor, which also achieves good results.

[0053] In the specific arrangement and implementation, the second detection part can be electrically connected to the connector 303 on the control valve 3 through a wiring harness, thereby realizing an integrated setting of the second detection part and the control valve 3. Compared with the solution of setting a sensor at the air intake, it is beneficial to shorten the length of the wiring harness and reduce the number of connectors, thereby helping to reduce production costs.

[0054] Another exemplary structure of the compressor detection device in this embodiment is as follows Figure 2 As shown in , the inlet 309 of the control valve and the outlet 305 of the control valve are spaced apart from each other, and the valve chamber 312 is connected between the inlet 309 of the control valve and the outlet 305 of the control valve. Specifically, the inlet 309 of the control valve is connected to the exhaust chamber 300, and the outlet 305 of the control valve is connected to the intake chamber 100. Relative to the inlet 309 of the control valve, the first detection chamber 301 is connected to the other side of the valve chamber 312 of the control valve 3, and relative to the outlet 305 of the control valve, the second detection chamber 302 is connected to the other side of the valve chamber 312 of the control valve 3. With this arrangement, part of the gas flowing in through the inlet 309 of the control valve can flow to the outlet 305 of the control valve through the valve chamber 312, thereby flowing into the intake chamber 100.

[0055] In practice, the remaining inflowing gas can flow directly into the first detection chamber 301. At this point, the pressure detected by the first detection unit is close to the pressure in the exhaust chamber 300, resulting in better detection accuracy. The second detection chamber 302 is positioned adjacent to the outlet 305 of the control valve, so that the pressure detected by the second detection unit in the second detection chamber 302 is close to that in the inhalation chamber 100, thereby improving the detection accuracy of the second detection unit.

[0056] Furthermore, to facilitate connection between the first and second detection units and the connector 303, the right sides of the first and second detection cavities 301 and 302 are open, and are sealed by a cover plate provided on the valve seat. Both the first and second detection units are electrically connected to the connector 303 via a wiring harness passing through the cover plate. Sealant is used to seal the cover plate and wiring harness to enhance the sealing of the detection cavities.

[0057] In this embodiment, the first detection part and the second detection part can be electrically connected to the connector 303 on the control valve 3, so that they can be directly controlled by the controller of the compressor. That is, the signal processing circuit, amplification circuit, power supply and other circuits of the detection part are in the compressor controller, which helps to shorten the length of the wiring harness, and is more convenient for the compressor diversion control and the exhaust pressure and exhaust temperature control, thereby helping to ensure the performance of the compressor.

[0058] It should be noted that, in addition to setting up the first detection chamber 301 and the second detection chamber 302 at the same time, in this embodiment, only the first detection chamber 301 or the second detection chamber 302 can be set. In this case, only the value in one detection chamber can be detected, which is also beneficial to the integrated design of the compressor.

[0059] The compressor detection device of this embodiment utilizes the control valve 3 as a carrier, integrating a first detection chamber 301 and a first detection unit, and / or a second detection chamber 302 and a second detection unit. This facilitates the integrated arrangement of the detection unit and the controller, and provides a basis for the detection unit and the control valve 3 to share a connector 303, thereby reducing the use of wiring harnesses and connectors and thus lowering production costs. Furthermore, the control valve 3 can regulate the flow rate of gas flowing back from the exhaust chamber 300 to the intake chamber 100, thereby reducing energy consumption and improving the performance of the compressor.

[0060] Example 2

[0061] The present embodiment relates to a compressor. In terms of overall structure, the compressor includes a shell 1 having an accommodating cavity and a scroll assembly 2 arranged in the accommodating cavity, as well as the above-mentioned detection device. A return channel is provided between the exhaust cavity 300 and the intake cavity 100 in the scroll assembly 2, and a control valve 3 is provided on the return channel.

[0062] In terms of specific structure, Figure 3 As shown in FIG, the compressor is specifically a scroll compressor, with a scroll assembly 2 disposed at one end of a housing 1, and a fixed scroll 201 disposed toward the outside of the housing 1. A control box 104 is provided at the other end of the housing 1, within which the compressor controller is located. A rotating shaft 4 and a motor assembly 5 for driving the rotating shaft 4 are rotatably disposed within the housing 1. A connecting portion 401 eccentrically arranged with the rotating shaft 4 is provided at the free end of the rotating shaft 4. The movable scroll 202 is disposed on the connecting portion 401 and rotates with the rotating shaft 4. A support body 402 is provided on the rotating shaft 4 on the other side of the movable scroll 202 relative to the fixed scroll 201 to ensure the planar motion effect of the movable scroll 202.

[0063] The air inlet of the compressor is arranged on the shell 1, and the exhaust port of the compressor is arranged at the right end of the shell 1. The gas flowing into the shell 1 can flow through the intake chamber 100, the intermediate chamber 200 and the exhaust chamber 300 in sequence to become high-temperature and high-pressure gas. Part of the gas is discharged through the exhaust port, and the other part of the gas flows back to the intake chamber 100 through the reflux channel, thereby increasing the temperature of the gas in the intake chamber 100, which is beneficial to increasing the temperature and pressure of the gas in the exhaust chamber 300.

[0064] As a preferred embodiment, the housing 1 in this embodiment includes a housing body 101 with two ends open. Figure 3 Based on the perspective in FIG, an end cover 102 is provided at the right end of the shell body 101, and the control box 104 is provided at the left end of the shell body 101. The shell body 101, the end cover 102 and the control box 104 together define the above-mentioned accommodating cavity.

[0065] As one structural example of the reflux channel, Figure 3 and Figure 4 As shown in FIG, the return channel includes a main channel 103 provided on the housing 1, and the control valve 3 is provided in the main channel 103. The main channel 103 has a first portion 1031 communicating with the inlet 309 of the control valve, and a second portion 1032 communicating with the outlet 305 of the control valve. The main channel 103 is connected to the exhaust chamber 300 through the first portion 1031, and to the intake chamber 100 through the second portion 1032. The first detection chamber 301 is connected to the first portion 1031, and the second detection chamber 302 is connected to the second portion 1032.

[0066] Here, the main channel 103 is specifically disposed on the end cap 102 and extends in the vertical direction. Third sealing members 306 are provided at the top and bottom of the control valve 3. The two third sealing members 306, the inner circumferential wall of the main channel 103, and the outer circumferential wall of the control valve 3 define a second portion 1032. The lower third sealing member 306, the inner circumferential wall of the main channel 103, and the outer circumferential wall of the control valve 3 define a first portion 1031. The provision of two third sealing members 306 here facilitates the separation of the first portion 1031 and the second portion 1032, thereby improving gas sealing. In specific implementation, the third sealing member 306 can be a sealing ring, which has a simple structure, is easy to arrange and implement, and provides a good sealing effect.

[0067] In this embodiment, the first part 1031 connected to the inlet 309 of the control valve is separated from the second part 1032 connected to the outlet 305 of the control valve, so that the gas in the exhaust chamber 300 first flows into the first part 1031 and the first detection chamber 301, and then flows into the second part 1032, and flows into the suction chamber 100 and the second detection chamber 302 through the second part 1032. This is not only conducive to achieving communication between the exhaust chamber 300 and the suction chamber 100, but also conducive to improving the detection accuracy of the first detection chamber 301 and / or the second detection chamber 302.

[0068] like Figure 3 As shown in FIG, the return channel further includes a first channel 1021 and a second channel 1022 provided on the housing 1. The first channel 1021 communicates between the exhaust chamber 300 and the first portion 1031, and the second channel 1022 communicates between the intake chamber 100 and the second portion 1032. The provision of the first channel 1021 and the second channel 1022 on the housing 1 facilitates communication between the first portion 1031 and the exhaust chamber 300, and between the second portion 1032 and the intake chamber 100.

[0069] Regarding the specific structure, still refer to Figure 3 As shown in the figure, the first channel 1021 is in the shape of a groove with a notch arranged toward the exhaust chamber 300, and the fixed vortex 201 in the vortex assembly 2 is provided with a first connecting port 203 connecting the first channel 1021 and the exhaust chamber 300. The second channel 1022 is in the shape of a groove arranged along the circumference of the vortex assembly 2, and the fixed vortex 201 is provided with a second connecting port connecting the second channel 1022 and the suction chamber 100. The notches of the first channel 1021 and the second channel 1022 are both blocked by the fixed vortex 201. Preferably, the cross-sectional area of the first channel 1021 is larger than the cross-sectional area of the exhaust chamber 300, so as to facilitate the gas in the exhaust chamber 300 to flow into the first channel 1021 via the first connecting port 203. The arrangement of the groove-shaped first channel and the first connecting port 203 here is conducive to arrangement and implementation, and has a good connection effect.

[0070] It should be noted that, in addition to providing the second communication port to achieve communication between the second channel 1022 and the suction cavity 100, Figure 3 As shown in the figure, a plurality of air ducts 105 arranged at circumferential intervals along the static vortex 201 can also be provided between the inner circumferential wall of the right end of the shell body 101 and the outer periphery of the static vortex 201. The air ducts 105 are used to connect the second channel 1022 and the accommodating chamber. At this time, the gas in the second channel 1022 flows into the accommodating chamber through the air duct 105, and can also flow back to the intake chamber 100, so that part of the gas in the exhaust chamber 300 flows back to the intake chamber 100.

[0071] In this embodiment, part of the gas from the exhaust chamber 300 flows through the first communication port 203 into the first channel 1021, then into the first portion 1031 of the main channel 103, and then into the valve chamber 312 of the control valve 3 via the inlet 309 of the control valve. Part of the gas in the valve chamber 312 flows into the first detection chamber 301 via the first communication channel 3011, while another part of the gas flows into the second portion 1032 via the outlet 305 of the control valve. Part of the gas in the second portion 1032 flows back to the inhalation chamber 100 via the second communication port, while another part of the gas flows into the second detection chamber 302 via the second communication channel 3021. The pressure and other values detected by the first detection unit serve as a reference for the corresponding parameters of the exhaust chamber 300, while the pressure values detected by the second detection unit serve as a reference for the corresponding parameters of the inhalation chamber 100.

[0072] like Figure 3 and Figure 4 As shown in FIG, the return flow channel in this embodiment includes a first channel 1021 provided on the housing 1 and communicating with the exhaust chamber 300, and a second channel 1022 communicating with the suction chamber 100. The inlet 309 of the control valve communicates with the exhaust chamber 300 through the first channel 1021, and the outlet 305 of the control valve communicates with the suction chamber 100 through the second channel 1022. The first detection chamber 301 communicates with the inlet 309 of the control valve, and the second detection chamber 302 communicates with the outlet 305 of the control valve.

[0073] In this embodiment, the first channel 1021 and the second channel 1022 are both provided on the inner side of the end cover 102, and the structures of the first channel 1021 and the second channel 1022 are similar to those of the embodiment of the present invention. Figure 3 The structure of the end cap 102 is identical to that of the control valve 3 embodiment and will not be further described here. In this embodiment, the control valve 3 is mounted on the outside of the end cap 102. Gas flowing out of the first passage 1021 flows directly through the control valve inlet 309 into the valve chamber 312 of the control valve 3, then through the control valve outlet 305 into the second passage 1022, and finally back into the suction chamber 100.

[0074] In terms of specific structure, refer to Figure 4 As shown in FIG, the first detection chamber 301 is connected to the other side of the valve chamber 312 relative to the inlet 309 of the control valve. The second detection chamber 302 is connected to the other side of the valve chamber 312 relative to the outlet 305 of the control valve. Here, the first detection chamber 301 and the second detection chamber 302 are arranged opposite the inlet 309 and outlet of the control valve, respectively, facilitating layout and implementation. This also brings the pressure and other parameters of the first detection chamber 301 closer to those of the exhaust chamber 300, and the pressure and other parameters of the second detection chamber 302 closer to those of the intake chamber 100, thereby improving the detection accuracy of the corresponding detection units.

[0075] To improve the installation of the control valve 3 on the housing 1, in this embodiment, a first seal 307 and a second seal 310 are provided between the housing 1 and the control valve 3. The first seal 307 is disposed around the control valve's inlet 309, and the second seal 310 is disposed around the control valve's outlet 305. In specific implementation, the first seal 307 and the second seal 310 are respectively sandwiched between the valve seat and the end cap 102. Both seals are formed as sealing rings. As the control valve 3 is installed on the end cap 102, the first seal 307 and the second seal 310 are sandwiched between the end cap 102 and the valve seat. This improves the communication between the valve cavity 312 and the first and second passages 1021 and 1022, and facilitates layout and implementation.

[0076] In addition, if Figure 1 As shown in FIG, a filter unit 304 for filtering gas is provided at the inlet 309 of the control valve. This helps improve the cleanliness of the gas and prevents foreign matter from clogging the control valve 3 and affecting the performance of the control valve 3. In practice, the filter unit 304 can be a filter mesh, which has a simple structure, is easy to implement, and has a good filtering effect.

[0077] The compressor of this embodiment utilizes a return channel in the housing 1. Compared to conventional bypass circuits between the exhaust chamber 300 and the gas-liquid separator, this reduces piping and connectors, thereby lowering costs and minimizing heat and pressure losses, thereby improving energy efficiency. Furthermore, the control valve 3 and the two detection units share a single connector 303, connecting directly to the compressor controller. This facilitates installation and shortens the wiring harness, facilitating compressor flow diversion control and controlling exhaust pressure and temperature, resulting in improved control effectiveness.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compressor detection device, characterized in that: The scroll assembly (2) of the compressor is formed with an exhaust cavity (300), an intermediate cavity (200), and an intake cavity (100) which are sequentially arranged from the inside to the outside along the radial direction of the scroll assembly (2); The detection device comprises a control valve (3) arranged between the exhaust chamber (300) and the intake chamber (100), the control valve (3) being used to adjust the flow rate of gas flowing back into the intake chamber (100), the control valve (3) being provided with a first detection chamber (301) and a first detection portion arranged in the first detection chamber (301), the first detection portion being capable of at least detecting the pressure of the exhaust chamber (300); and / or the control valve (3) being provided with a second detection chamber (302) for communicating with the intake chamber (100), and a second detection portion being arranged in the second detection chamber (302), the second detection portion being capable of at least detecting the pressure of the intake chamber (100).

2. The compressor detection device according to claim 1, characterized in that: The first detection chamber (301) is provided in the valve stem (308) of the control valve (3), and the valve stem (308) is provided with a first communication channel (3011) for communicating the first detection chamber (301) with the valve chamber (312) of the control valve (3); and / or, The second detection chamber (302) is provided on the valve seat of the control valve (3), and the valve seat is provided with a second communication channel (3021) for connecting the second detection chamber (302) and the air suction chamber (100).

3. The compressor detection device according to claim 1, characterized in that: Relative to the inlet (309) of the control valve, the first detection chamber (301) is in communication with the other side of the valve chamber (312) of the control valve (3), and / or, Relative to the outlet (305) of the control valve, the second detection chamber (302) is communicated with the other side of the valve chamber (312) of the control valve (3).

4. The compressor detection device according to any one of claims 1 to 3, characterized in that: A filter portion (304) for filtering gas is provided at the inlet (309) of the control valve.

5. A compressor, characterized in that: The invention comprises a housing (1) having an accommodating cavity and a scroll assembly (2) arranged in the accommodating cavity, and a detection device according to any one of claims 1 to 4, wherein a return channel is provided between the exhaust cavity (300) and the intake cavity (100) in the scroll assembly (2), and the control valve (3) is provided on the return channel.

6. The compressor according to claim 5, characterized in that: The return channel comprises a main channel (103) provided on the housing (1), the control valve (3) being provided in the main channel (103), the main channel (103) having a first portion (1031) communicating with an inlet (309) of the control valve, and a second portion (1032) communicating with an outlet (305) of the control valve; The main channel (103) is in communication with the exhaust chamber (300) through the first portion (1031), and is in communication with the intake chamber (100) through the second portion (1032); The first detection chamber (301) is in communication with the first portion (1031), and / or the second detection chamber (302) is in communication with the second portion (1032).

7. The compressor according to claim 6, characterized in that: The reflux channel further comprises a first channel (1021) and a second channel (1022) provided on the housing (1); The first channel (1021) is connected between the exhaust chamber (300) and the first portion (1031), and the second channel (1022) is connected between the intake chamber (100) and the second portion (1032).

8. The compressor according to claim 7, characterized in that: The first channel (1021) is in the shape of a groove with a notch facing the exhaust chamber (300), and a first communication port (203) for communicating between the first channel (1021) and the exhaust chamber (300) is provided on the fixed scroll (201) in the scroll assembly (2); and / or, The second channel (1022) is in the shape of a groove arranged along the circumference of the scroll assembly (2), and the fixed scroll (201) is provided with a second communication port connecting the second channel (1022) and the suction chamber (100).

9. The compressor according to claim 5, characterized in that: The return channel comprises a first channel (1021) provided on the housing (1) and communicating with the exhaust chamber (300), and a second channel (1022) communicating with the intake chamber (100); The inlet (309) of the control valve is in communication with the exhaust chamber (300) through the first channel (1021), and the outlet (305) of the control valve is in communication with the intake chamber (100) through the second channel (1022); The first detection chamber (301) is in communication with the inlet end of the valve chamber (312) of the control valve (3), and / or the second detection chamber (302) is in communication with the outlet end of the valve chamber (312) of the control valve (3).

10. The compressor according to claim 9, characterized in that: A first sealing member (307) and a second sealing member (310) are provided between the housing (1) and the control valve (3); The first seal (307) is disposed around the inlet (309) of the control valve, and the second seal (310) is disposed around the outlet (305) of the control valve.

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