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 magnet assembly, the diffuser body, the diffuser ring and the magnet assembly 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 magnet assembly 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 magnet assembly 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 specifically 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, which will cause backflow and then form surging, seriously affecting 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, and a diffuser body, a diffuser ring and a magnet assembly installed in the housing. 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 magnet assembly can drive the diffuser ring to move so that a part of the diffuser ring extends out from 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 magnet assembly can extend a part of the diffuser ring out from 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 the preferred technical solution of the above compressor, the magnet assembly includes a first electromagnetic element and a second electromagnetic element. The first electromagnetic element is installed on the side wall of the diffuser ring away from or close to the exhaust passage, and the second electromagnetic element is installed on the side wall of the annular chamber opposite to the first electromagnetic element. The first electromagnetic element and the second electromagnetic element move the diffuser ring in a direction close to or away from the exhaust passage by respectively passing in the same-direction current or the reverse-direction current.

[0009] In the case of adopting the above technical solution, by arranging the first electromagnetic element and the second electromagnetic element which are relatively arranged on the side wall of the diffuser ring and the side wall of the annular chamber, when the first electromagnetic element and the second electromagnetic element respectively pass in the same-direction current or the reverse-direction current, the diffuser ring can be moved in a direction close to or away from the exhaust passage, with a simple structural form and convenient operation and installation.

[0010] In the preferred technical solution of the above compressor, the magnet assembly includes a first electromagnetic element and a permanent magnet element. One of the first electromagnetic element and the permanent magnet element is installed on the diffuser ring, and the other of the first electromagnetic element and the permanent magnet element is installed on the side wall of the annular chamber. The first electromagnetic element moves the diffuser ring in a direction close to or away from the exhaust passage by changing the direction of the current.

[0011] In the case of adopting the above technical solution, by arranging the first electromagnetic element and the permanent magnet element which are relatively arranged on the diffuser ring and the side wall of the annular chamber, when the first electromagnetic element respectively passes in the forward current or the reverse current, the diffuser ring can be moved in a direction close to or away from the exhaust passage, with a simple structural form and convenient operation and installation.

[0012] In the preferred technical solution of the above compressor, the compressor further includes an elastic member installed in the annular chamber. The elastic member extends along the moving direction of the diffuser ring, and two ends of the elastic member are respectively connected to the diffuser ring and the side wall of the annular chamber.

[0013] In the case of adopting the above technical solution, by arranging an elastic member between the diffuser ring and the side wall of the annular chamber, when the diffuser ring moves in the annular chamber, the elastic member can prevent the diffuser ring from moving, so that the moving amount of the diffuser ring can be controlled by changing the magnetic force of the magnet assembly, with a simple structure and convenient operation and installation.

[0014] In the preferred technical solution of the above compressor, the diffuser ring includes a diffuser ring body and a protruding portion, and the protruding portion can extend into the exhaust passage through the annular opening.

[0015] In the case of adopting the above technical solution, the present invention reduces the volume of the diffuser ring by providing a protrusion on the diffuser ring, thereby making it easier for the diffuser ring to move in the annular chamber and improving the working efficiency of the magnet assembly.

[0016] In the preferred technical solution of the above compressor, the protrusion is provided at one end of the diffuser ring body close to the center of the diffuser ring.

[0017] In the case of adopting the above technical solution, by providing the protrusion at one end of the diffuser ring body close to the center of the diffuser ring, that is, the inner circular end of the diffuser ring, the present invention can reduce the overall weight of the diffuser ring, facilitate processing and installation, and is more conducive to the movement of the diffuser ring in the annular chamber.

[0018] In the preferred technical solution of the above compressor, the diffuser ring body is fixedly connected or integrally provided with the protrusion.

[0019] In the case of adopting the above technical solution, by fixedly connecting or integrally providing the diffuser ring body with the protrusion, the present invention gives users more choices.

[0020] In the 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 diffuser ring body from disengaging from the annular opening.

[0021] In the case of adopting the above technical solution, the present invention prevents the diffuser ring body from disengaging from the annular opening by providing an annular pressing plate on the annular opening, and the structure is simple, facilitating installation and maintenance.

[0022] In the preferred technical solution of the above compressor, the annular pressing plate is fixedly connected to the diffuser body.

[0023] In the case of adopting the above technical solution, by fixedly connecting the annular pressing plate to the diffuser body, it is convenient for installation and maintenance.

[0024] In the 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.

[0025] In the case of adopting the above technical solution, the present invention detects the position of the diffuser ring in the annular chamber by providing a position detection member, so as to control the movement amount of the diffuser ring in the annular chamber, thereby being able to more accurately control the cross-sectional area of the exhaust passage, and further controlling the flow rate of the refrigerant gas in the exhaust passage.

[0026] In the preferred technical solution of the above compressor, 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, and the distance sensor is used to detect the distance between the diffuser ring and the first side wall or the second side wall.

[0027] 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 through a distance sensor, with a simple structure, convenient installation and measurement.

[0028] In a second aspect, the present invention also provides an air conditioning device, which includes the above compressor.

[0029] 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 of 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 the magnet assembly 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 surge problem of the compressor, and ensure the safe operation of the compressor. Description of the Drawings

[0030] The following describes the preferred embodiments of the present invention with reference to the drawings, in which:

[0031] Figure 1 is a cross-sectional view of the compressor of the present invention under partial load;

[0032] Figure 2 is Figure 1 an enlarged view of part A in

[0033] Figure 3 is a cross-sectional view of the compressor of the present invention under normal load;

[0034] Figure 4 is Figure 3 an enlarged view of part B in

[0035] Figure 5 is a schematic structural view of the diffuser ring of the compressor of the present invention;

[0036] Figure 6 is Figure 5 a cross-sectional view taken along line C-C in

[0037] Figure 7 is a schematic structural view of the annular pressing plate of the compressor of the present invention.

[0038] List of Reference Numerals:

[0039] 1. Housing

[0040] 2. Impeller

[0041] 3. Diffuser body; 31. Annular chamber

[0042] 4. Diffuser ring; 41. Diffuser ring body; 42. Protrusion

[0043] 5. Magnet assembly; 51. First electromagnetic element; 52. Second electromagnetic element

[0044] 6. Exhaust passage

[0045] 7. Annular pressing plate

[0046] 8. Distance sensor

[0047] 9. Elastic member Detailed implementation manners

[0048] 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.

[0049] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "inner", "outer", "upper", "lower", "left", "right", etc. are based on the directions or positional 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" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0050] 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.

[0051] 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 magnet assembly 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 the surge problem, and ensure the safe operation of the compressor.

[0052] Specifically, the present invention provides an air conditioning device, including a compressor. The compressor can compress the refrigerant medium in the air conditioning device into a high-temperature and high-pressure gaseous refrigerant. Then, the high-temperature and high-pressure gaseous refrigerant enters the evaporator or condenser through a pipeline for heat exchange, thereby achieving temperature adjustment.

[0053] When the existing compressor operates under a partial load condition, 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, which will cause the reflux of the refrigerant gas, and then form surging, seriously affecting the safe operation of the compressor. When the surging is severe, it will cause damage to the compressor.

[0054] As Figures 1 to 4 shown, the compressor of the present invention includes a housing 1 and a diffuser body 3, a diffuser ring 4 and a magnet assembly 5 installed in the housing 1. An exhaust passage 6 is formed between the diffuser body 3 and the housing 1. A ring chamber 31 is provided on the diffuser body 3. The diffuser ring 4 is installed in the ring chamber 31. A ring opening is provided on the side of the ring chamber 31 facing the exhaust passage 6. The magnet assembly 5 can drive the diffuser ring 4 to move so that a part of the diffuser ring 4 extends out from the ring opening, thereby reducing the cross-sectional area of the exhaust passage 6.

[0055] Exemplarily, as Figures 1 to 4 shown, 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. An air inlet and an air outlet are provided on the housing 1. 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 increase the pressure of the refrigerant gas. The high-temperature and high-pressure gaseous refrigerant is then discharged from the air outlet to the pipeline of the next stage through the exhaust passage 6.

[0056] Taking Figure 1 and Figure 3Taking the perspective of as an example, 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, a circular chamber 31 is provided on the diffuser body 3, the diffuser ring 4 is installed in the circular chamber 31, and a circular opening is provided on the right side of the circular chamber 31. When the compressor is in the normal load operating state, the diffuser ring 4 is located inside the circular 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 the partial load operating state, the magnet assembly 5 can drive the diffuser ring 4 to move inside the circular chamber 31, so that the right part of the diffuser ring 4 extends from the circular opening into the exhaust passage 6, thereby reducing the cross-sectional area of the exhaust passage 6, increasing the flow rate of the refrigerant gas, preventing the backflow of the refrigerant gas and the occurrence of surge problems, and ensuring the safe operation of the compressor.

[0057] 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 all be limited within the protection scope of the present invention.

[0001] It should also be noted that the present invention does not limit the form of the magnet assembly 5. For example, those skilled in the art can set the magnet assembly 5 as two electromagnetic elements relatively installed on the side walls of the circular chamber 31 and the side wall of the diffuser ring 4, and make the diffuser ring 4 move by passing the same-direction current or reverse current through the two electromagnetic elements respectively. Or the diffuser ring 4 can also be set as a permanent magnet, and an electromagnetic element is provided on the side wall of the circular chamber 31 to make the diffuser ring 4 move by changing the magnetic pole of the electromagnetic element. Or, a permanent magnet can also be provided on the side wall of the circular chamber 31, and an electromagnetic element is provided on the diffuser ring 4 to make the diffuser ring 4 move by changing the magnetic pole of the electromagnetic element, etc. Such adjustments and changes to the specific form of the magnet assembly 5 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.

[0058] Preferably, as Figures 1 to 4 shown, the magnet assembly 5 of the present invention includes a first electromagnetic element 51 and a second electromagnetic element 52. The first electromagnetic element 51 is installed on the side wall of the diffuser ring 4 away from or close to the exhaust passage 6, and the second electromagnetic element 52 is installed on the side wall of the circular chamber 31 opposite to the first electromagnetic element 51. The first electromagnetic element 51 and the second electromagnetic element 52 make the diffuser ring 4 move in the direction close to or away from the exhaust passage 6 by passing the same-direction current or reverse current respectively.

[0059] Exemplarily, as Figures 1 to 4 shown, taking Figure 1 andFigure 3 Taking the perspective in as an example, the first electromagnetic element 51 of the present invention is installed on the left side wall of the diffuser ring 4, and the second electromagnetic element 52 is installed on the left side wall of the annular chamber 31. The first electromagnetic element 51 and the second electromagnetic element 52 can be respectively supplied with current in the same direction or in the opposite direction, so as to generate a repulsive force or an attractive force between the first electromagnetic element 51 and the second electromagnetic element 52, and further cause the diffuser ring 4 to move in the direction of approaching or departing from the exhaust passage 6.

[0060] Specifically, when the compressor is in a partial load operating state, the first electromagnetic element 51 and the second electromagnetic element 52 are supplied with current in the same direction, and a repulsive force is generated between the first electromagnetic element 51 and the second electromagnetic element 52, causing the first electromagnetic element 51 to drive the diffuser ring 4 to move towards the annular opening, so that a part of the diffuser ring 4 extends into the exhaust passage 6, thereby reducing the cross-sectional area of the exhaust passage 6, increasing the flow rate of the refrigerant gas, preventing the backflow of the refrigerant gas and the occurrence of surge problems, and improving the efficiency of the compressor.

[0061] When the compressor is in a normal load operating state, the first electromagnetic element 51 and the second electromagnetic element 52 are supplied with current in the opposite direction, and an attractive force is generated between the first electromagnetic element 51 and the second electromagnetic element 52, causing the first electromagnetic element 51 to drive the diffuser ring 4 to move towards the second electromagnetic element 52, so that the diffuser ring 4 is completely retracted into the annular chamber 31. At this time, the working efficiency of the compressor is the highest.

[0062] It should be noted that the present invention does not limit the shape of the diffuser ring 4. For example, those skilled in the art can also set the diffuser ring 4 to be L-shaped, T-shaped or rectangular, etc. Such adjustments and changes to the specific shape of the diffuser ring 4 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 also be noted that the present invention does not limit the installation positions of the first electromagnetic element 51 and the second electromagnetic element 52. For example, those skilled in the art can also install the first electromagnetic element 51 on the right side wall of the diffuser ring 4 and the second electromagnetic element 52 on the right side wall of the annular chamber 31. Or, the positions of the first electromagnetic element 51 and the second electromagnetic element 52 can be interchanged. Or, the side walls of the diffuser ring 4 and the annular chamber 31 can be set as electromagnetic elements simultaneously or separately. Such adjustments and changes to the specific installation positions of the first electromagnetic element 51 and the second electromagnetic element 52 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] It should be further noted that in the present invention, one of the first electromagnetic element 51 and the second electromagnetic element 52 can be set as a permanent magnet element, and the diffuser ring 4 is moved in a direction close to or away from the exhaust passage 6 by changing the direction of the current in the first electromagnetic element 51 or the second electromagnetic element 52.

[0065] Taking the second electromagnetic element 52 being set as the permanent magnet element as an example, as Figures 1 to 4 shown, the first electromagnetic element 51 is installed on the left side wall of the diffuser ring 4, and the permanent magnet element is installed on the left side wall of the annular chamber 31. The first electromagnetic element 51 can respectively conduct forward current or reverse current to change the direction of the magnetic pole, so as to generate a repulsive force or an attractive force between the first electromagnetic element 51 and the permanent magnet element, and further move the diffuser ring 4 in a direction close to or away from the exhaust passage 6.

[0066] Specifically, when the compressor is in a partial load operating state, a forward current is conducted in the first electromagnetic element 51, and a repulsive force is generated between the first electromagnetic element 51 and the permanent magnet element, causing the first electromagnetic element 51 to drive the diffuser ring 4 to move towards the annular opening, so that a part of the diffuser ring 4 extends into the exhaust passage 6, thereby reducing the cross-sectional area of the exhaust passage 6, increasing the flow rate of the refrigerant gas, preventing the backflow of the refrigerant gas and the occurrence of surge problems, and improving the efficiency of the compressor.

[0067] When the compressor is in a normal load operating state, a reverse current is conducted in the first electromagnetic element 51, and an attractive force is generated between the first electromagnetic element 51 and the permanent magnet element, causing the first electromagnetic element 51 to drive the diffuser ring 4 to move towards the permanent magnet element, so that the diffuser ring 4 is completely retracted into the annular chamber 31, and at this time the operating efficiency of the compressor is the highest.

[0068] Preferably, as Figures 1 to 4 shown, the compressor of the present invention further includes an elastic member 9 installed in the annular chamber. The elastic member 9 extends along the moving direction of the diffuser ring 4, and both ends of the elastic member 9 are respectively connected to the diffuser ring 4 and the side wall of the annular chamber 31.

[0069] Exemplarily, as Figures 1 to 4 shown, the elastic member 9 of the present invention is installed on the left side wall of the diffuser ring 4 and the left side wall of the annular chamber 31 in the left-right direction. When the diffuser ring 4 moves in the annular chamber 31, the elastic member 9 can prevent the diffuser ring 4 from moving, so that the magnetic force can be changed by changing the magnitude of the current in the magnet assembly 5, and thus the moving amount of the diffuser ring 4 in the annular chamber 31 can be controlled.

[0070] It should be noted that the present invention does not limit the installation position of the elastic member 9. For example, those skilled in the art can also install the elastic member 9 on the right side wall of the diffuser ring 4 and the right side wall of the annular chamber 31, or can install the elastic member 9 on the side walls on both sides of the diffuser ring 4, etc. Such adjustments and changes to the specific installation position of the elastic member 9 do not deviate from the principle and scope of the present invention and should all be defined within the protection scope of the present invention.

[0071] It should also be noted that the present invention does not limit the type of the elastic member 9. For example, those skilled in the art can set the elastic member 9 as a spring or a member made of other elastic materials, as long as it has resilience. Such adjustments and changes to the specific type of the elastic member 9 do not deviate from the principle and scope of the present invention and should all be defined within the protection scope of the present invention.

[0072] Preferably, as Figures 1 to 6 shown, the diffuser ring 4 of the present invention includes a diffuser ring body 41 and a protruding portion 42, and the protruding portion 42 can extend through the annular opening into the exhaust passage 6.

[0073] Exemplarily, as Figures 1 to 6 shown, from Figure 1 and Figure 3 in the cross-sectional view of the compressor, the cross-sectional plane of the diffuser ring 4 of the present invention is L-shaped. The diffuser ring body 41 is arranged vertically at the left end of the diffuser ring 4, and the protruding portion 42 is horizontally located at the right end of the diffuser ring 4. From Figure 3 in the plan view of the diffuser ring 4, both the diffuser ring body 41 and the protruding portion 42 are annular. The protruding portion 42 is vertically installed on the diffuser ring body 41, and the first electromagnetic element 51 is installed on the left side wall of the diffuser ring body 41. The protruding portion 42 can extend through the annular opening into the exhaust passage 6. By setting the diffuser ring 4 to be L-shaped, the volume of the diffuser ring 4 can be reduced, enabling the diffuser ring 4 to move more smoothly in the annular chamber 31.

[0074] It should be noted that the present invention does not limit the installation position of the protruding portion 42. For example, those skilled in the art can set the protruding portion 42 at one end of the diffuser ring body 41 close to the center of the diffuser ring 4, or can also set the protruding portion 42 at one end of the diffuser ring body 41 far from the center of the diffuser ring 4, etc. Such adjustments and changes to the specific installation position of the protruding portion 42 do not deviate from the principle and scope of the present invention and should all be defined within the protection scope of the present invention.

[0075] Preferably, as Figures 1 to 6 shown, the protruding portion 42 of the present invention is arranged at one end of the diffuser ring body 41 close to the center of the diffuser ring 4.

[0076] Exemplarily, as Figures 1 to 6 shown, both the diffuser ring body 41 and the protruding part 42 of the present invention are annular. The protruding part 42 is vertically installed at one end of the diffuser ring body 41 close to the center of the diffuser ring 4. Such a setting makes the diffuser ring 4 smaller in volume and weight, saving costs, and at the same time enabling the diffuser ring 4 to move more smoothly in the annular chamber 31.

[0077] Preferably, as Figures 1 to 6 shown, the diffuser ring body 41 of the present invention is fixedly connected or integrally provided with the protruding part 42.

[0078] That is to say, the diffuser ring body 41 and the protruding part 42 can be integrally cast, or can be fixedly connected by connection means such as bolts, thus giving users more choices.

[0079] Certainly, the present invention preferably integrally casts the diffuser ring body 41 and the protruding part 42. Such a setting is convenient for processing and installation and saves costs.

[0080] Preferably, as Figures 1 to 4 and Figure 7 shown, the compressor of the present invention further includes an annular pressing plate 7. The annular pressing plate 7 is installed on the annular opening to prevent the diffuser ring body 41 from disengaging from the annular opening.

[0081] Exemplarily, as Figures 1 to 4 and Figure 7 shown, the protruding part 42 of the present invention 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. The annular pressing plate 7 is installed at one end of the annular opening away from the center of the annular chamber 31. When the diffuser ring 4 moves towards the annular opening in the annular chamber under the push of the magnet assembly, the protruding part 42 extends into the exhaust passage 6 from the annular opening, and after the diffuser ring body 41 contacts the annular pressing plate 7, the annular pressing plate 7 can prevent the diffuser ring body 41 from disengaging from the annular opening.

[0082] It should be noted that the present invention does not limit the shape of the annular pressing plate 7. For example, those skilled in the art can set the cross-section of the annular pressing plate 7 to be T-shaped, rectangular or L-shaped, etc. Such adjustments and changes to the specific shape of the annular pressing plate 7 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.

[0083] Preferably, as Figures 1 to 4 and Figure 7 shown, the annular pressing plate 7 of the present invention is fixedly connected to the diffuser body 3.

[0084] By fixedly connecting the annular pressing plate 7 to the diffuser body 3, for example, by bolt - connecting the annular pressing plate 7 to the diffuser body 3, in this way, the installation and disassembly of the annular pressing plate 7 are facilitated, and the maintenance work of the compressor is made easier.

[0085] Preferably, as Figures 1 to 4 shown, the compressor of the present invention further includes a position - detecting member installed in the housing 1, and the position - detecting member is used to detect the position of the diffuser ring 4 in the annular chamber 31.

[0086] That is to say, the position - detecting member can detect the position of the diffuser ring 4 in the annular chamber 31 in real time, so that the amount by which the protruding portion 42 of the diffuser ring 4 extends out of the annular opening can be controlled and adjusted, and thus the cross - sectional area of the exhaust passage 6 can be adjusted, enabling the compressor to be applicable to different working conditions.

[0087] Preferably, as Figures 1 to 4 shown, the position - detecting 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.

[0088] Exemplarily, as Figures 1 to 4 shown, the distance sensor 8 of the present invention is installed on the left side wall of the annular chamber 31. 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.

[0089] 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 can be seen from Figure 1 and Figure 2 the right side wall of the annular chamber 31 is a pressing plate. Such adjustments and changes to the specific installation position of the distance sensor 8 do not deviate from the principle and scope of the present invention and should all be defined within the protection scope of the present invention.

[0090] 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 that it is within the scope of this application and forms different embodiments. For example, in the claims of this application, any one of the claimed embodiments can be used in any combination.

[0091] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easily understood by those skilled in the art 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 all fall within the protection scope of the present invention.

Claims

1. A compressor, characterized in that, Comprising: A housing, a diffuser body, a diffuser ring and a magnet assembly installed in the housing. 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 magnet assembly is configured to drive the diffuser ring to move so that a part of the diffuser ring extends out from the annular opening, thereby reducing the cross-sectional area of the exhaust passage.

2. The compressor according to claim 1, characterized in that, The magnet assembly includes a first electromagnetic element and a second electromagnetic element. The first electromagnetic element is installed on the side wall of the diffuser ring away from or close to the exhaust passage. The second electromagnetic element is installed on the side wall of the annular chamber opposite to the first electromagnetic element. The first electromagnetic element and the second electromagnetic element move the diffuser ring in a direction close to or away from the exhaust passage by respectively passing in the same-direction current or reverse-direction current.

3. The compressor according to claim 1, characterized in that, The magnet assembly includes a first electromagnetic element and a permanent magnet element. One of the first electromagnetic element and the permanent magnet element is installed on the diffuser ring, and the other of the first electromagnetic element and the permanent magnet element is installed on the side wall of the annular chamber. The first electromagnetic element moves the diffuser ring in a direction close to or away from the exhaust passage by changing the direction of the current.

4. The compressor according to claim 1, wherein The compressor further includes an elastic member installed in the annular chamber. The elastic member extends along the moving direction of the diffuser ring. Two ends of the elastic member are respectively connected to the diffuser ring and the side wall of the annular chamber.

5. The compressor according to claim 1, characterized in that, The diffuser ring includes a diffuser ring body and a protruding portion. The protruding portion can extend through the annular opening into the exhaust passage.

6. The compressor according to claim 5, characterized in that, The protruding portion is provided at one end of the diffuser ring body close to the center of the diffuser ring; and / or The diffuser ring body is fixedly connected or integrally provided with the protruding portion; and / or The compressor further includes an annular pressing plate installed on the annular opening to prevent the diffuser ring body from disengaging from the annular opening.

7. The compressor according to claim 6, wherein The annular pressing plate is fixedly connected to the diffuser body.

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. 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, Including the compressor according to any one of claims 1 to 9.

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