Compressor and air conditioning equipment comprising same

Abstract

The invention relates to the technical field of air conditioning equipment, in particular to a compressor and air conditioning equipment comprising the compressor, and aims to solve the problem of surge of an existing compressor under partial load. Therefore, the compressor comprises a shell, a diffuser body, a diffuser ring and a driving mechanism, the diffuser body, the diffuser ring and the driving mechanism are installed in the shell, an exhaust channel is formed between the diffuser body and the shell, an annular cavity is formed in the diffuser body, the diffuser ring is installed in the annular cavity, and an annular opening is formed in the annular cavity; the driving mechanism can drive the diffuser ring to move so that a part of the diffuser ring can stretch out of the annular opening, and therefore the cross section area of the exhaust channel can be reduced. The driving mechanism can enable one part of the diffuser ring to extend out of the annular opening so as to reduce the cross sectional area of the exhaust channel, the flow speed of gas is increased, the surge problem is avoided, and safe operation of the compressor is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and particularly provides a compressor and an air conditioning equipment including the compressor. Background Art

[0002] With the improvement of people's living standards, commercial air conditioners have become common air conditioning equipment in shopping malls, supermarkets, data centers, etc. The centrifugal compressor is the core component of the air conditioner. The low-temperature and low-pressure gaseous refrigerant can be compressed into a high-temperature and high-pressure gaseous refrigerant by the centrifugal compressor, and then the high-temperature and high-pressure gaseous refrigerant enters the condenser for heat exchange.

[0003] When the existing centrifugal compressor operates under partial load, the flow area of the diffuser is relatively large. When a small amount of refrigerant gas passes through the diffuser, the flow velocity is not sufficient to rush out of the diffuser, resulting in backflow, and then surging, which seriously affects the safe operation of the compressor. When the surging is severe, it will cause damage to the compressor.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve the above technical problems, that is, to solve the problem of surging of the existing compressor under partial load.

[0006] In a first aspect, the present invention provides a compressor, including: a housing, a diffuser body and a diffuser ring installed in the housing, and a driving mechanism. An exhaust passage is formed between the diffuser body and the housing. The diffuser body is provided with an annular chamber. The diffuser ring is installed in the annular chamber. An annular opening is provided on one side of the annular chamber facing the exhaust passage. The driving mechanism can drive the diffuser ring to move so that a part of the diffuser ring extends out of the annular opening to reduce the cross-sectional area of the exhaust passage.

[0007] In the case of adopting the above technical solution, the present invention installs a movable diffuser ring in the annular chamber of the diffuser body, so that when the compressor operates under partial load, the driving mechanism can extend a part of the diffuser ring out of the annular opening to reduce the cross-sectional area of the exhaust passage, increase the flow velocity of the refrigerant gas, prevent the backflow of the refrigerant gas and the occurrence of surging problems, and ensure the safe operation of the compressor.

[0008] In a preferred technical solution of the above compressor, the diffuser ring divides the annular chamber into a first chamber and a second chamber in a first direction. The first direction is the moving direction of the diffuser ring. The second chamber is arranged close to the exhaust passage. The driving mechanism can change the pressure difference between the first chamber and the second chamber to move the diffuser ring.

[0009] In the case of adopting the above technical solution, the driving mechanism of the present invention moves the diffuser ring by changing the pressure difference between the first chamber and the second chamber, with a simple structural form and cost savings.

[0010] In a preferred technical solution of the above compressor, the driving mechanism includes a first pipe group, a second pipe group, a first electrically controlled valve installed on the first pipe group, and a second electrically controlled valve installed on the second pipe group. The first end of the first pipe group is communicated with the first chamber, the second end and the third end of the first pipe group are respectively communicated with a low-pressure area and a high-pressure area, and the first electrically controlled valve is configured to selectively communicate the first end of the first pipe group with the second end or the third end of the first pipe group; the first end of the second pipe group is communicated with the second chamber, the second end and the third end of the second pipe group are respectively communicated with a low-pressure area and a high-pressure area, and the second electrically controlled valve is configured to selectively communicate the first end of the second pipe group with the second end or the third end of the second pipe group.

[0011] In the case of adopting the above technical solution, the present invention controls the communication between the first chamber and the low-pressure area and the high-pressure area through the first electrically controlled valve and the first pipe group, and controls the communication between the second chamber and the low-pressure area and the high-pressure area through the second electrically controlled valve and the second pipe group. The structural form is simple and convenient to operate. By controlling the communication states of the first chamber and the second chamber with the low-pressure area and the high-pressure area in the compressor, the pressure difference between the first chamber and the second chamber is realized, so that the diffuser ring moves in the annular chamber, with a simple structural form and cost savings.

[0012] In a preferred technical solution of the above compressor, the first pipe group includes a first main pipeline, a first branch pipeline, and a second branch pipeline. The first electrically controlled valve includes a first solenoid valve and a second solenoid valve. One end of the first main pipeline is communicated with the first chamber, the other end of the first main pipeline is communicated with one end of the first branch pipeline and one end of the second branch pipeline, the other end of the first branch pipeline and the other end of the second branch pipeline are respectively communicated with a low-pressure area and a high-pressure area, and the first solenoid valve and the second solenoid valve are respectively installed on the first branch pipeline and the second branch pipeline; and / or the second pipe group includes a second main pipeline, a third branch pipeline, and a fourth branch pipeline. The second electrically controlled valve includes a third solenoid valve and a fourth solenoid valve. One end of the second main pipeline is communicated with the second chamber, the other end of the second main pipeline is communicated with one end of the third branch pipeline and one end of the fourth branch pipeline, the other end of the third branch pipeline and the other end of the fourth branch pipeline are respectively communicated with a low-pressure area and a high-pressure area, and the third solenoid valve and the fourth solenoid valve are respectively installed on the third branch pipeline and the fourth branch pipeline.

[0013] In the case of adopting the above technical solution, the present invention sets the first pipe group as a connected first main pipeline, first branch pipeline and second branch pipeline, which has a simple structure and is convenient for processing and installation. By installing the first solenoid valve and the second solenoid valve on the first branch pipeline and the second branch pipeline respectively to control the on-off state, it is convenient to operate. By setting the second pipe group as a connected second main pipeline, third branch pipeline and fourth branch pipeline, the structure is simple and it is convenient for processing and installation. By installing the third solenoid valve and the fourth solenoid valve on the third branch pipeline and the fourth branch pipeline respectively to control the on-off state, it is convenient to operate.

[0014] In the preferred technical solution of the above compressor, the first pipe group includes a first main pipeline, a first branch pipeline and a second branch pipeline. The first electric control valve is a first three-way solenoid valve. One end of the first main pipeline is communicated with the first chamber, and the other end of the first main pipeline is communicated with the first interface of the first three-way solenoid valve. The second interface and the third interface of the first three-way solenoid valve are respectively communicated with one end of the first branch pipeline and one end of the second branch pipeline. The other end of the first branch pipeline and the other end of the second branch pipeline are respectively communicated with the low-pressure area and the high-pressure area; and / or the second pipe group includes a second main pipeline, a third branch pipeline and a fourth branch pipeline. The second electric control valve is a second three-way solenoid valve. One end of the second main pipeline is communicated with the second chamber, and the other end of the second main pipeline is communicated with the first interface of the second three-way solenoid valve. The second interface and the third interface of the second three-way solenoid valve are respectively communicated with one end of the third branch pipeline and one end of the fourth branch pipeline. The other end of the third branch pipeline and the other end of the fourth branch pipeline are respectively communicated with the low-pressure area and the high-pressure area.

[0015] In the case of adopting the above technical solution, the present invention sets the first pipe group as a connected first main pipeline, first branch pipeline and second branch pipeline, which has a simple structure and is convenient for processing and installation. By setting the first electric control valve as a first three-way solenoid valve, it is convenient for installation and operation and saves costs. By setting the second pipe group as a connected second main pipeline, third branch pipeline and fourth branch pipeline, the structure is simple and it is convenient for processing and installation. By setting the second electric control valve as a second three-way solenoid valve, it is convenient for installation and operation and saves costs.

[0016] In the preferred technical solution of the above compressor, the diffuser ring includes a separating part and a protruding part. The separating part divides the annular chamber into the first chamber and the second chamber, and the protruding part can extend into the exhaust passage through the annular opening.

[0017] In the case of adopting the above technical solution, the present invention sets the diffuser ring into two parts, namely a partition part and a protruding part, so that the partition part can drive the protruding part to move depending on the pressure difference between the first chamber and the second chamber. The structure is simple and it is more conducive to the movement of the diffuser ring in the annular chamber.

[0018] In a preferred technical solution of the above compressor, the compressor further includes an annular pressing plate, and the annular pressing plate is installed on the annular opening to prevent the partition part from disengaging from the annular opening.

[0019] In the case of adopting the above technical solution, the present invention prevents the partition part from disengaging from the annular opening by arranging an annular pressing plate on the annular opening. The structure is simple and it is convenient for installation and maintenance.

[0020] In a preferred technical solution of the above compressor, the compressor further includes a position detection member installed in the housing, and the position detection member is used to detect the position of the diffuser ring in the annular chamber.

[0021] In the case of adopting the above technical solution, the present invention detects the position of the diffuser ring in the annular chamber by arranging a position detection member, so as to be able to control the moving amount of the diffuser ring in the annular chamber, and thus be able to more accurately control the cross-sectional area of the exhaust passage, and further control the flow rate of the refrigerant gas in the exhaust passage.

[0022] In a preferred technical solution of the above compressor, the position detection member is a distance sensor, and the distance sensor is installed on the first side wall or the second side wall of the annular chamber. The first side wall and the second side wall are oppositely arranged along the moving direction of the diffuser ring, and the distance sensor is used to detect the distance between the diffuser ring and the first side wall or the second side wall.

[0023] In the case of adopting the above technical solution, the present invention detects the distance between the diffuser ring and the side wall of the annular chamber by a distance sensor. The structure is simple and it is convenient for installation and measurement.

[0024] In a second aspect, the present invention further provides an air conditioning device, which includes the above compressor.

[0025] In the case of adopting the above technical solution, since the air conditioning device of the present invention includes the above compressor, it thus has the beneficial effects possessed by the above compressor. Compared with the air conditioning device before improvement, when the compressor of the air conditioning device of the present invention operates under partial load, it can extend a part of the diffuser ring from the annular opening through a driving mechanism to reduce the cross-sectional area of the exhaust passage, reduce the flow rate in the exhaust passage, increase the exhaust pressure, prevent the backflow of gas, avoid the surging problem of the compressor, and ensure the safe operation of the compressor. Brief Description of the Drawings

[0026] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

[0027] Figure 1 is a cross-sectional view of the compressor of the present invention under partial load;

[0028] Figure 2 is Figure 1 an enlarged view of part A in

[0029] Figure 3 is a cross-sectional view of the compressor of the present invention under normal load;

[0030] Figure 4 is Figure 1 an enlarged view of part B in

[0031] Figure 5 is a schematic structural diagram of Embodiment 1 of the driving mechanism of the compressor of the present invention;

[0032] Figure 6 is a schematic structural diagram of Embodiment 2 of the driving mechanism of the compressor of the present invention;

[0033] Figure 7 is a schematic structural diagram of the diffuser ring of the compressor of the present invention;

[0034] Figure 8 is Figure 7 a cross-sectional view taken along line C-C in

[0035] Figure 9 is a schematic structural diagram of the annular pressing plate of the compressor of the present invention.

[0036] List of Reference Numerals:

[0037] 1. Housing;

[0038] 2. Impeller;

[0039] 3. Diffuser body; 31. Annular chamber; 311. First chamber; 312. Second chamber;

[0040] 4. Diffuser ring; 41. Partition portion; 42. Protruding portion;

[0041] 5. Driving mechanism; 51. First main pipeline; 52. First branch pipeline; 53. Second branch pipeline; 54. Second main pipeline; 55. Third branch pipeline; 56. Fourth branch pipeline; 511. First solenoid valve; 512. Second solenoid valve; 513. Third solenoid valve; 514. Fourth solenoid valve; 515; First three-way solenoid valve; 516. Second three-way solenoid valve;

[0042] 6. Exhaust passage;

[0043] 7. Annular pressing plate;

[0044] 8. Distance sensor. Detailed implementation manners

[0045] The preferred implementation manners of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these implementation manners are only used to explain the technical principle of the present invention and are not intended to limit the protection scope of the present invention.

[0046] It should be noted that in the description of the present invention, the terms "inner", "outer", "upper", "lower", "left", "right" and other terms indicating directions or position relationships are based on the directions or position relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "connected", "installed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0048] Based on the problem of surge of the existing compressor under part-load pointed out in the background art, the present invention provides a compressor and an air conditioning device including the compressor, aiming to install a movable diffuser ring in the annular chamber of the diffuser body, so that when the compressor operates under part-load, a part of the diffuser ring can be extended from the annular opening through the driving mechanism to reduce the cross-sectional area of the exhaust passage, increase the flow rate of the refrigerant gas, prevent the reflux of the refrigerant gas and the occurrence of surge problems, and ensure the safe operation of the compressor.

[0049] Specifically, the present invention provides an air conditioning device, including a compressor, which can compress the refrigerant medium in the air conditioning device into a high-temperature and high-pressure gaseous refrigerant, and then the high-temperature and high-pressure gaseous refrigerant enters the evaporator or condenser through the pipeline for heat exchange, so as to realize the temperature regulation.

[0050] Such as Figures 1 to 4As shown in the figure, the compressor of the present invention includes a housing 1, a diffuser body 3 and a diffuser ring 4 installed in the housing 1, and a driving mechanism 5. An exhaust passage 6 is formed between the diffuser body 3 and the housing 1. The diffuser body 3 is provided with an annular chamber 31. The diffuser ring 4 is installed in the annular chamber 31. An annular opening is provided on one side of the annular chamber 31 facing the exhaust passage 6. The driving mechanism 5 can drive the diffuser ring 4 to move so that a part of the diffuser ring 4 extends out from the annular opening, thereby reducing the cross-sectional area of the exhaust passage 6.

[0051] Exemplarily, as Figures 1 to 4 shown in the figure, an impeller 2 and a diffuser body 3 are installed in the housing 1 of the compressor of the present invention. An exhaust passage 6 is formed between the diffuser body 3 and the housing 1. The housing 1 is provided with an air inlet and an air outlet. The gaseous refrigerant enters the compressor through the air inlet. The gaseous refrigerant is accelerated and thrown into the diffuser body 3 by the high-speed rotation of the impeller 2. The high-speed gaseous refrigerant decelerates in the diffuser body 3, and the dynamic pressure is converted into static pressure, and the kinetic energy is converted into pressure energy to realize the increase of the pressure of the refrigerant gas. The high-temperature and high-pressure gaseous refrigerant is then discharged from the exhaust port to the next-stage pipeline through the exhaust passage 6.

[0052] Taking Figure 1 and Figure 3 as an example of the perspective, the impeller 2 is located on the left side inside the housing 1, the diffuser body 3 is located on the right side of the impeller 2, an exhaust passage 6 is formed between the diffuser body 3 and the housing 1. The diffuser body 3 is provided with an annular chamber 31. The diffuser ring 4 is installed in the annular chamber 31. An annular opening is provided on the right side of the annular chamber 31. When the compressor is in a full-load working state, the diffuser ring 4 is located in the annular chamber 31, and the diffuser ring 4 does not affect the cross-sectional area of the exhaust passage 6, and the efficiency of the compressor is the highest. When the compressor is in a part-load working state, the driving mechanism 5 can drive the diffuser ring 4 to move in the annular chamber 31, so that the right part of the diffuser ring 4 extends out into the exhaust passage 6 from the annular opening, thereby reducing the cross-sectional area of the exhaust passage 6, increasing the flow rate of the refrigerant gas, preventing the occurrence of the reflux and surge problems of the refrigerant gas, and ensuring the safe operation of the compressor.

[0053] It should be noted that the present invention does not limit the number of stages of the impeller 2. For example, those skilled in the art can set the impeller 2 as a single-stage impeller 2, a two-stage impeller 2 or a multi-stage impeller 2, etc. according to specific usage requirements. Such adjustments and changes to the specific number of stages of the impeller 2 do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.

[0054] It should also be noted that the present invention does not limit the structural form of the driving mechanism 5. For example, those skilled in the art can set the driving mechanism 5 in the form of a gear and a rack to drive the diffuser ring 4 to move, or the driving mechanism 5 can also be set as an electromagnetic component to drive the diffuser ring 4 to move by magnetic force. Or, the diffuser ring 4 can also divide the annular chamber 31 into two chambers on the left and right, and drive the diffuser ring 4 to move by controlling the pressure difference between the two chambers. The driving mechanism 5 can be installed inside the housing 1 or outside the housing 1, as long as it can drive the diffuser ring 4 to move. Such adjustments and changes to the specific structural form of the driving mechanism 5 do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.

[0055] Preferably, as Figures 1 to 4 shown, the diffuser ring 4 of the present invention divides the annular chamber 31 into a first chamber 311 and a second chamber 312 along the first direction, the first direction being the moving direction of the diffuser ring 4, and the second chamber 312 is arranged close to the exhaust passage 6. The driving mechanism 5 can move the diffuser ring 4 by changing the pressure difference between the first chamber 311 and the second chamber 312.

[0056] Exemplarily, as Figures 1 to 4 shown, the diffuser ring 4 of the present invention is installed at the middle position of the annular chamber 31 and divides the annular chamber 31 into a first chamber 311 and a second chamber 312. The first chamber 311 is on the left and the second chamber 312 is on the right. The driving mechanism 5 can move the diffuser ring 4 by changing the pressure difference between the first chamber 311 and the second chamber 312. That is to say, the driving mechanism 5 can adjust the pressure of the gas in the first chamber 311 and the second chamber 312, so as to move the diffuser ring 4 through the pressure difference.

[0057] It should be noted that the present invention does not limit the form in which the driving mechanism 5 changes the pressure difference between the first chamber 311 and the second chamber 312. For example, those skilled in the art can change the pressure difference between the first chamber 311 and the second chamber 312 through a pressurizing device and a decompressing device, or the first chamber 311 and the second chamber 312 can be respectively communicated with the high-pressure area and the low-pressure area in the compressor through pipelines to change the pressure difference between the first chamber 311 and the second chamber 312, etc. Such adjustments and changes to the specific form in which the driving mechanism 5 changes the pressure difference between the first chamber 311 and the second chamber 312 do not deviate from the principle and scope of the present invention and should be limited within the protection scope of the present invention.

[0058] Preferably, as Figure 5 and Figure 6As shown, the drive mechanism 5 of the present invention includes a first pipe group, a second pipe group, a first electric control valve installed on the first pipe group, and a second electric control valve installed on the second pipe group. The first end of the first pipe group is communicated with the first chamber 311, and the second end and the third end of the first pipe group are respectively communicated with the low-pressure area and the high-pressure area in the compressor. The first electric control valve is configured to selectively communicate the first end of the first pipe group with the second end or the third end of the first pipe group; the first end of the second pipe group is communicated with the second chamber 312, and the second end and the third end of the second pipe group are respectively communicated with the low-pressure area and the high-pressure area in the compressor. The second electric control valve is configured to selectively communicate the first end of the second pipe group with the second end or the third end of the second pipe group.

[0059] Exemplarily, as Figure 5 and Figure 6 shown, the lower end of the first pipe group of the present invention is communicated with the first chamber 311, and the left end and the right end of the first pipe group are respectively communicated with the low-pressure area and the high-pressure area in the compressor. The first electric control valve is configured to selectively communicate the first end of the first pipe group with the second end or the third end of the first pipe group, that is to say, the first electric control valve can selectively communicate the first chamber 311 with the low-pressure area and the high-pressure area in the compressor.

[0060] The lower end of the second pipe group is communicated with the second chamber 312, and the left end and the right end of the second pipe group are respectively communicated with the low-pressure area and the high-pressure area in the compressor. The second electric control valve is configured to selectively communicate the first end of the second pipe group with the second end or the third end of the second pipe group, that is to say, the second electric control valve can selectively communicate the second chamber 312 with the low-pressure area and the high-pressure area in the compressor.

[0061] It should be noted that the present invention does not limit the forms of the first pipe group and the second pipe group. For example, those skilled in the art can set the first pipe group as two independent pipelines, and the two pipelines respectively communicate the first chamber 311 with the low-pressure area and the high-pressure area in the compressor. Or the first pipe group can also be set as a main pipeline communicated with the first chamber 311 and two branch pipelines branched from the main pipeline and respectively communicated with the low-pressure area and the high-pressure area in the compressor, and so on. Similarly, the second pipe group can also be set with reference to the first pipe group. Such adjustments and changes to the specific forms of the first pipe group and the second pipe group do not deviate from the principles and scopes of the present invention and should all be limited within the protection scope of the present invention.

[0062] It should also be noted that the present invention does not limit the types of the first electric control valve and the second electric control valve. For example, those skilled in the art can set the first electric control valve as an electric control valve or a three-way solenoid valve, etc., as long as it can cooperate with the first pipe group to connect the first chamber 311 with the low-pressure area and the high-pressure area in the compressor. Similarly, the second electric control valve can also be set as an electric control valve or a three-way solenoid valve, etc. Such adjustments and changes to the specific types of the first electric control valve and the second electric control valve do not deviate from the principle and scope of the present invention and should all be limited within the protection scope of the present invention.

[0063] It should be further noted that the present invention does not limit the installation positions of the low-pressure area and the high-pressure area. For example, those skilled in the art can also set the low-pressure area and the high-pressure area at other positions in the circulation system, as long as they can provide low pressure and high pressure. Such adjustments and changes to the specific installation positions of the low-pressure area and the high-pressure area do not deviate from the principle and scope of the present invention and should all be limited within the protection scope of the present invention.

[0064] The driving mechanism 5 of the compressor of the present invention will be introduced in detail below with reference to two specific embodiments.

[0065] Embodiment 1

[0066] The following Figure 5 introduces the first embodiment of the driving mechanism 5 of the compressor of the present invention.

[0067] As Figure 5 shown, the first pipe group of the present invention includes a first main pipeline 51, a first branch pipeline 52 and a second branch pipeline 53. The first electric control valve includes a first solenoid valve 511 and a second solenoid valve 512. One end of the first main pipeline 51 is connected to the first chamber 311, the other end of the first main pipeline 51 is connected to one end of the first branch pipeline 52 and one end of the second branch pipeline 53. The other ends of the first branch pipeline 52 and the second branch pipeline 53 are respectively connected to the low-pressure area and the high-pressure area in the compressor. The first solenoid valve 511 and the second solenoid valve 512 are respectively installed on the first branch pipeline 52 and the second branch pipeline 53.

[0068] Exemplarily, as Figure 5 shown, the lower end of the first main pipeline 51 of the present invention is connected to the first chamber 311, the upper end of the first main pipeline 51 is connected to the right end of the first branch pipeline 52 and the left end of the second branch pipeline 53. The left end of the first branch pipeline 52 and the right end of the second branch pipeline 53 are respectively connected to the low-pressure area and the high-pressure area in the compressor. The first solenoid valve 511 and the second solenoid valve 512 are respectively installed on the first branch pipeline 52 and the second branch pipeline 53. By controlling the on-off states of the first solenoid valve 511 and the second solenoid valve 512, the first chamber 311 can be connected to the low-pressure area or the high-pressure area in the compressor.

[0069] As Figure 3 shown, the second pipe group of the present invention includes a second main pipeline 54, a third branch pipeline 55, and a fourth branch pipeline 56. The second electric control valve includes a third solenoid valve 513 and a fourth solenoid valve 514. One end of the second main pipeline 54 communicates with the second chamber 312, and the other end of the second main pipeline 54 communicates with one end of the third branch pipeline 55 and one end of the fourth branch pipeline 56. The other ends of the third branch pipeline 55 and the fourth branch pipeline 56 respectively communicate with the low-pressure area and the high-pressure area inside the compressor. The third solenoid valve 513 and the fourth solenoid valve 514 are respectively installed on the third branch pipeline 55 and the fourth branch pipeline 56.

[0070] Exemplarily, as Figure 3 shown, the lower end of the second main pipeline 54 of the present invention communicates with the second chamber 312, the upper end of the second main pipeline 54 communicates with the right end of the third branch pipeline 55 and the left end of the fourth branch pipeline 56. The left end of the third branch pipeline 55 and the right end of the fourth branch pipeline 56 respectively communicate with the low-pressure area and the high-pressure area inside the compressor. The third solenoid valve 513 and the fourth solenoid valve 514 are respectively installed on the third branch pipeline 55 and the fourth branch pipeline 56. By controlling the on-off states of the third solenoid valve 513 and the fourth solenoid valve 514, the second chamber 312 can be communicated with the low-pressure area or the high-pressure area inside the compressor.

[0071] Specifically, when the compressor is in a normal load state, the first solenoid valve 511 is opened, the second solenoid valve 512 is closed, so that the first chamber 311 communicates with the low-pressure area of the compressor, the fourth solenoid valve 514 is opened, the third solenoid valve 513 is closed, so that the second chamber 312 communicates with the high-pressure area of the compressor. Thus, relying on the pressure difference between the first chamber 311 and the second chamber 312, the diffuser ring 4 moves towards the left side in the annular chamber 31, and then the diffuser ring 4 is completely retracted into the annular chamber 31.

[0072] When the compressor is in a partial load state, the first solenoid valve 511 is closed, the second solenoid valve 512 is opened, so that the first chamber 311 communicates with the high-pressure area of the compressor, the fourth solenoid valve 514 is closed, the third solenoid valve 513 is opened, so that the second chamber 312 communicates with the low-pressure area of the compressor. Thus, relying on the pressure difference between the first chamber 311 and the second chamber 312, the diffuser ring 4 moves towards the right side in the annular chamber 31, and then a part of the diffuser ring 4 extends into the exhaust passage 6.

[0073] Embodiment 2

[0074] Next, a second embodiment of the driving mechanism 5 of the compressor of the present invention will be introduced in conjunction with Figure 4 this.

[0075] As Figure 4As shown in the figure, the first pipe group of the present invention includes a first main pipeline 51, a first branch pipeline 52, and a second branch pipeline 53. The first electric control valve is a first three-way solenoid valve 515. One end of the first main pipeline 51 is communicated with the first chamber 311, and the other end of the first main pipeline 51 is communicated with the first interface of the first three-way solenoid valve 515. The second interface and the third interface of the first three-way solenoid valve 515 are respectively communicated with one end of the first branch pipeline 52 and one end of the second branch pipeline 53. The other end of the first branch pipeline 52 and the other end of the second branch pipeline 53 are respectively communicated with the low-pressure area and the high-pressure area in the compressor.

[0076] Exemplarily, as Figure 4 shown in the figure, the lower end of the first main pipeline 51 of the present invention is communicated with the first chamber 311, the upper end of the first main pipeline 51 is communicated with the first interface of the first three-way solenoid valve 515, the second interface and the third interface of the first three-way solenoid valve 515 are respectively communicated with the right end of the first branch pipeline 52 and the left end of the second branch pipeline 53, the left end of the first branch pipeline 52 and the right end of the second branch pipeline 53 are respectively communicated with the low-pressure area and the high-pressure area in the compressor. By controlling the on-off states of the second interface and the third interface of the first three-way solenoid valve 515, the first chamber 311 can be communicated with the low-pressure area or the high-pressure area in the compressor.

[0077] As Figure 4 shown in the figure, the second pipe group of the present invention includes a second main pipeline 54, a third branch pipeline 55, and a fourth branch pipeline 56. The second electric control valve is a second three-way solenoid valve 516. One end of the second main pipeline 54 is communicated with the second chamber 312, and the other end of the second main pipeline 54 is communicated with the first interface of the second three-way solenoid valve 516. The second interface and the third interface of the second three-way solenoid valve 516 are respectively communicated with one end of the third branch pipeline 55 and one end of the fourth branch pipeline 56. The other end of the third branch pipeline 55 and the other end of the fourth branch pipeline 56 are respectively communicated with the low-pressure area and the high-pressure area in the compressor.

[0078] Exemplarily, as Figure 4 shown in the figure, the lower end of the second main pipeline 54 of the present invention is communicated with the second chamber 312, the upper end of the second main pipeline 54 is communicated with the first interface of the second three-way solenoid valve 516, the second interface and the third interface of the second three-way solenoid valve 516 are respectively communicated with the right end of the third branch pipeline 55 and the left end of the fourth branch pipeline 56, the left end of the third branch pipeline 55 and the right end of the fourth branch pipeline 56 are respectively communicated with the low-pressure area and the high-pressure area in the compressor. By controlling the on-off states of the second interface and the third interface of the second three-way solenoid valve 516, the second chamber 312 can be communicated with the low-pressure area or the high-pressure area in the compressor.

[0079] Specifically, when the compressor is in the normal load state, the first and second interfaces of the first three-way solenoid valve 515 are opened, and the third interface is closed, so that the first chamber 311 communicates with the low-pressure area of the compressor. The first and third interfaces of the second three-way solenoid valve 516 are opened, and the second interface is closed, so that the second chamber 312 communicates with the high-pressure area of the compressor. Thus, relying on the pressure difference between the first chamber 311 and the second chamber 312, the diffuser ring 4 moves towards the left in the annular chamber 31, and further, the diffuser ring 4 is completely retracted into the annular chamber 31.

[0080] When the compressor is in the partial load state, the first and third interfaces of the first three-way solenoid valve 515 are opened, and the second interface is closed, so that the first chamber 311 communicates with the high-pressure area of the compressor. The first and second interfaces of the second three-way solenoid valve 516 are opened, and the third interface is closed, so that the second chamber 312 communicates with the low-pressure area of the compressor. Thus, relying on the pressure difference between the first chamber 311 and the second chamber 312, the diffuser ring 4 moves towards the right in the annular chamber 31, and further, a part of the diffuser ring 4 extends into the exhaust passage 6.

[0081] Preferably, as Figure 1 、 Figure 2 and Figure 5 shown, the diffuser ring 4 of the present invention includes a partition portion 41 and a protruding portion 42. The partition portion 41 divides the annular chamber 31 into a first chamber 311 and a second chamber 312, and the protruding portion 42 can extend through the annular opening into the exhaust passage 6.

[0082] Exemplarily, as Figure 1 、 Figure 2 and Figure 5 shown, from the cross-sectional view of the compressor, the cross-sectional view of the diffuser ring 4 is L-shaped. The partition portion 41 is arranged vertically at the left end of the diffuser ring 4, and the protruding portion 42 is located horizontally at the right end of the diffuser ring 4. From Figure 5 the front view of the diffuser ring 4 in

[0083] shown, both the partition portion 41 and the protruding portion 42 are annular. The protruding portion 42 is vertically installed at one end of the partition portion 41 close to the center of the diffuser ring 4. The partition portion 41 divides the annular chamber 31 into a first chamber 311 and a second chamber 312 in the left-right direction, and the protruding portion 42 can extend through the annular opening into the exhaust passage 6.

[0084] Preferably, as shown in Figure 1 , Figure 2 and Figure 6 , the compressor of the present invention further includes an annular pressing plate 7, and the annular pressing plate 7 is installed on the annular opening to prevent the partition part 41 from coming out of the annular opening.

[0085] Exemplarily, as shown in Figure 1 , Figure 2 and Figure 6 , taking the protruding part 42 vertically installed at one end of the partition part 41 close to the center of the diffuser ring 4 as an example, the protruding part 42 is closely attached to the side wall of the annular chamber 31 close to the center of the annular chamber 31. The annular pressing plate 7 is annular, and the annular pressing plate 7 is installed at one end of the annular opening away from the center of the annular chamber 31, so that the protruding part 42 can protrude from the annular opening, and can also prevent the partition part 41 from coming out of the annular opening.

[0086] Preferably, as shown in Figure 1 and Figure 2 , the compressor of the present invention further includes a position detection member installed in the housing 1, and the position detection member is used to detect the position of the diffuser ring 4 in the annular chamber 31.

[0087] That is to say, the position detection member can detect the position of the diffuser ring 4 in the annular chamber 31 in real time, so as to control and adjust the amount of the protruding part 42 of the diffuser ring 4 protruding from the annular opening, so as to adjust the cross-sectional area of the exhaust passage 6, so that the compressor can be applicable to different working conditions.

[0088] It should be noted that the present invention does not limit the type of the position detection member. For example, those skilled in the art can set the position detection member as a distance sensor or a pressure sensor, etc.

[0089] Preferably, as shown in Figure 1 and Figure 2 , the position detection member of the present invention is a distance sensor 8, and the distance sensor 8 is installed on the first side wall or the second side wall of the annular chamber 31. The first side wall and the second side wall are oppositely arranged along the moving direction of the diffuser ring 4, and the distance sensor 8 is used to detect the distance between the diffuser ring 4 and the first side wall or the second side wall.

[0090] Exemplarily, as shown in Figure 1 and Figure 2 , the distance sensor 8 of the present invention is installed on the left side wall of the annular chamber 31, and the distance sensor 8 can detect the distance between the diffuser ring 4 and the left side wall of the annular chamber 31, so as to control the position of the diffuser ring 4 in the annular chamber 31 through the controller of the air conditioning device.

[0091] It should be noted that the present invention does not limit the installation position of the distance sensor 8. For example, those skilled in the art can also install the distance sensor 8 on the right side wall of the annular chamber 31. As seen from Figure 1 and Figure 2 the right side wall of the annular chamber 31 is the annular pressing plate 7. Such adjustment and change of the specific installation position of the distance sensor 8 do not deviate from the principle and scope of the present invention and should be defined within the protection scope of the present invention.

[0092] Those skilled in the art can understand that although some of the embodiments described herein include certain features included in other embodiments rather than other features, the combination of features of different embodiments means being within the scope of the present application and forming different embodiments. For example, in the claims of the present application, any one of the claimed embodiments can be used in any combination.

[0093] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A compressor, characterized in that, Comprising: A housing, a diffuser body and a diffuser ring installed in the housing, and a driving mechanism. An exhaust passage is formed between the diffuser body and the housing. An annular chamber is provided on the diffuser body. The diffuser ring is installed in the annular chamber. An annular opening is provided on one side of the annular chamber facing the exhaust passage. The driving mechanism can drive the diffuser ring to move so that a part of the diffuser ring extends out of the annular opening, thereby reducing the cross-sectional area of the exhaust passage.

2. The compressor according to claim 1, characterized in that, The diffuser ring divides the annular chamber into a first chamber and a second chamber in a first direction, which is the moving direction of the diffuser ring. The second chamber is arranged close to the exhaust passage. The driving mechanism can change the pressure difference between the first chamber and the second chamber to move the diffuser ring.

3. The compressor according to claim 2, characterized in that, The driving mechanism includes a first pipe group, a second pipe group, a first electric control valve installed on the first pipe group, and a second electric control valve installed on the second pipe group. The first end of the first pipe group is communicated with the first chamber. The second end and the third end of the first pipe group are respectively communicated with a low-pressure area and a high-pressure area. The first electric control valve is configured to selectively communicate the first end of the first pipe group with the second end or the third end of the first pipe group. The first end of the second pipe group is communicated with the second chamber. The second end and the third end of the second pipe group are respectively communicated with a low-pressure area and a high-pressure area. The second electric control valve is configured to selectively communicate the first end of the second pipe group with the second end or the third end of the second pipe group.

4. The compressor according to claim 3, characterized in that, The first pipe group includes a first main pipeline, a first branch pipeline and a second branch pipeline. The first electric control valve includes a first solenoid valve and a second solenoid valve. One end of the first main pipeline is communicated with the first chamber. The other end of the first main pipeline is communicated with one end of the first branch pipeline and one end of the second branch pipeline. The other end of the first branch pipeline and the other end of the second branch pipeline are respectively communicated with a low-pressure area and a high-pressure area. The first solenoid valve and the second solenoid valve are respectively installed on the first branch pipeline and the second branch pipeline; and / or The second pipe group includes a second main pipeline, a third branch pipeline and a fourth branch pipeline. The second electric control valve includes a third solenoid valve and a fourth solenoid valve. One end of the second main pipeline is communicated with the second chamber. The other end of the second main pipeline is communicated with one end of the third branch pipeline and one end of the fourth branch pipeline. The other end of the third branch pipeline and the other end of the fourth branch pipeline are respectively communicated with a low-pressure area and a high-pressure area. The third solenoid valve and the fourth solenoid valve are respectively installed on the third branch pipeline and the fourth branch pipeline.

5. The compressor according to claim 3, characterized in that The first pipe group includes a first main pipeline, a first branch pipeline, and a second branch pipeline. The first electric control valve is a first three-way solenoid valve. One end of the first main pipeline is communicated with the first chamber, and the other end of the first main pipeline is communicated with the first interface of the first three-way solenoid valve. The second interface and the third interface of the first three-way solenoid valve are respectively communicated with one end of the first branch pipeline and one end of the second branch pipeline. The other end of the first branch pipeline and the other end of the second branch pipeline are respectively communicated with the low-pressure area and the high-pressure area; and / or The second pipe group includes a second main pipeline, a third branch pipeline, and a fourth branch pipeline. The second electric control valve is a second three-way solenoid valve. One end of the second main pipeline is communicated with the second chamber, and the other end of the second main pipeline is communicated with the first interface of the second three-way solenoid valve. The second interface and the third interface of the second three-way solenoid valve are respectively communicated with one end of the third branch pipeline and one end of the fourth branch pipeline. The other end of the third branch pipeline and the other end of the fourth branch pipeline are respectively communicated with the low-pressure area and the high-pressure area.

6. The compressor according to claim 2, wherein The diffuser ring includes a partition portion and a protruding portion. The partition portion divides the annular chamber into the first chamber and the second chamber. The protruding portion can extend through the annular opening into the exhaust passage.

7. The compressor according to claim 6, characterized in that, The compressor further includes an annular pressing plate, and the annular pressing plate is installed on the annular opening to prevent the partition portion from disengaging from the annular opening.

8. The compressor according to any one of claims 1 to 7, characterized in that, The compressor further includes a position detection member installed in the housing, and the position detection member is used to detect the position of the diffuser ring in the annular chamber.

9. The compressor according to claim 8, characterized in that, The position detection member is a distance sensor. The distance sensor is installed on the first side wall or the second side wall of the annular chamber. The first side wall and the second side wall are oppositely arranged along the moving direction of the diffuser ring. The distance sensor is used to detect the distance between the diffuser ring and the first side wall or the second side wall.

10. An air conditioning device, characterized in that, A compressor according to any one of claims 1 to 9 is included.

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