Air-supplementing and enthalpy-increasing compressor and air conditioner

Abstract

The air-supply enthalpy-increasing compressor comprises an air cylinder, a partition plate or a flange and a valve body, the partition plate or the flange is connected with the end face of one axial side of the air cylinder, and an air-supply enthalpy-increasing channel is formed in the air cylinder; an injection channel is formed in the end face of the axial side, connected with the partition plate or the flange, of the air cylinder in a sunken mode, the radial inner side of the injection channel is communicated with an inner cavity of the air cylinder, a valve groove is further formed in the connecting position of the injection channel, and at least part of the structure of the valve body is arranged in the valve groove. The side, away from the injection channel, of the valve groove further communicates with a pressure introduction channel, one end of the pressure introduction channel communicates with the valve groove, the other end of the pressure introduction channel can communicate with an inner cavity of the air cylinder, and the valve body can move in the valve groove and the injection channel so as to open or close the injection channel. According to the invention, the problem of poor enthalpy increasing effect caused by unreasonable enthalpy increasing time can be solved; and the air supply amount can be effectively increased, and the air supply requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to an air-infusing and enthalpy-increasing compressor and an air conditioner. Background Art

[0002] Rolling rotor compressors have outstanding advantages such as small size and simple structure, and are widely used in the fields of household air conditioners, commercial air conditioners, low-temperature heat pumps, etc. The enthalpy increase channel is set on the pump body of this model, and the injection of medium-pressure gas into the compression chamber can increase the cooling capacity (or heating capacity) and reduce the compressor exhaust problem, further expanding the application range of the compressor.

[0003] The existing enthalpy increase structure usually opens an enthalpy increase channel in a specific area on the partition or flange according to the compressor application, and uses the roller pressure sealing effect to solve the backflow problem when the compression chamber pressure is greater than the enthalpy increase pressure, such as the structure described in patent CN117287395A. This patented structure can only adapt to specific working conditions (the working conditions selected during design) because when the operating conditions of the compressor deviate from the specific working conditions, the enthalpy increase port has the problem of early closing or delayed closing, resulting in poor enthalpy increase effect.

[0004] The prior art patent CN201351610Y discloses that a roller cavity is provided on a cylinder, a ball is provided in the roller cavity, one end of the ball is connected to the air supply channel, and the other end is connected to the cylinder cavity, and the air supply channel is opened and closed by the movement of the ball. However, since the ball is provided in the air supply channel, and the other end of the ball is connected to the air supply inlet of the cylinder, the pressure is introduced through the air supply inlet of the cylinder and compared with the air supply pressure, thereby promoting the movement of the ball to open or close the air supply channel, but the method of introducing pressure through the air supply inlet of the cylinder results in a smaller cross-sectional area of ​​the air intake channel due to the obstruction of the ball, resulting in the air supply amount not meeting the required requirements, and the use of the ball for air supply still results in a large leakage gap between the ball and the inner wall of the channel, resulting in the failure to meet the air supply requirements (insufficient air supply pressure or cylinder return air, etc.), and the ball will not move along the direction of the central axis during the movement, and will deviate, thereby hitting the inner wall or lower end of the channel, etc., resulting in stress concentration, a large amount of energy consumption, resulting in reduced air supply performance and reduced air supply reliability. Similarly, the prior art patent CN202117924 U also has the problem of introducing pressure through the cylinder air supply inlet, resulting in a small amount of air supply, which cannot meet the required requirements.

[0005] Since the valve body structure of the air-injection and re-enthalpy-increasing compressor in the prior art is arranged in the air-injection channel and the pressure is introduced through the cylinder air-injection inlet, resulting in a small air-injection amount and failing to meet the required requirements, the present invention studies and designs an air-injection and re-enthalpy-increasing compressor and air conditioner. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect in the prior art that the valve body structure of the air-increasing and reheat-increasing compressor is arranged in the air-increasing channel and the pressure is introduced through the cylinder air-increasing inlet, resulting in a small air-increasing amount and failing to meet the required requirements, thereby providing an air-increasing and reheat-increasing compressor and an air conditioner.

[0007] In order to solve the above problems, the present invention provides an air-injection enthalpy-increasing compressor, which comprises:

[0008] A cylinder, a partition or a flange and a valve body, wherein the partition or the flange is connected to an axial end face of the cylinder, and an air supplement and enthalpy increase channel is provided inside the cylinder, an injection channel is provided in a concave manner on an axial end face of the partition or the flange connected to the cylinder, or an injection channel is provided in a concave manner on an axial end face of the cylinder connected to the partition or the flange;

[0009] A valve groove is also provided on the partition or the flange at a position connected to the injection channel, and the radial inner side of the injection channel is connected to the internal cavity of the cylinder. At least part of the structure of the valve body is arranged in the valve groove, and a pressure introduction channel is also provided on the side of the valve groove away from the injection channel. One end of the pressure introduction channel is connected to the valve groove, and the other end can be connected to the internal cavity of the cylinder. The valve body can move in the valve groove and the injection channel to open or close the injection channel.

[0010] In some embodiments,

[0011] The pressure introduction channel can introduce the refrigerant in the internal cavity of the cylinder and act on one end of the valve body, and the air-supply and enthalpy-increasing channel can introduce the refrigerant and act on the other end of the valve body. When the refrigerant pressure introduced by the pressure introduction channel is less than the refrigerant pressure in the air-supply and enthalpy-increasing channel, the valve body moves toward the direction of the pressure introduction channel and opens the injection channel. When the refrigerant pressure introduced by the pressure introduction channel is greater than the refrigerant pressure in the air-supply and enthalpy-increasing channel, the valve body moves toward the direction of the injection channel and closes the injection channel. When the injection channel is opened, the refrigerant in the air-supply and enthalpy-increasing channel can be replenished into the internal cavity of the cylinder through the injection channel.

[0012] In some embodiments,

[0013] A pressure inlet is provided on the axial end surface of the partition or flange facing the internal cavity of the cylinder, one end of the pressure inlet is communicated with the internal cavity of the cylinder, one end of the pressure inlet extends to connect with the pressure inlet to communicate with the internal cavity, and the refrigerant in the internal cavity can be introduced into the pressure inlet channel;

[0014] It also includes a roller, which is arranged in the internal cavity of the cylinder. Before the roller rotates to the air intake port of the cylinder to be connected with the injection channel, the pressure inlet port can introduce gas with a pressure greater than the air replenishment pressure from the internal cavity into the pressure introduction channel. When the roller rotates to the air intake port of the cylinder to be connected with the injection channel, the pressure inlet port is closed by the roller.

[0015] In some embodiments,

[0016] The pressure introduction channel includes a first section extending along the axial direction of the partition or flange and a second section extending along the radial direction of the partition or flange, so that the valve groove, the first section, the second section and the pressure introduction port are connected in sequence; the air-supplementing enthalpy-increasing channel extends along the radial direction of the cylinder, and the cylinder is also provided with an enthalpy-increasing port, which extends from an axial end face of the cylinder in a direction away from the partition or flange, and extends to be connected with the air-supplementing enthalpy-increasing channel, and the enthalpy-increasing port is connected to the injection channel.

[0017] In some embodiments,

[0018] In the projection surface of the longitudinal plane, in the axial direction perpendicular to the cylinder, the width of the first section of the pressure introduction channel is smaller than the width of the valve groove, the width of the valve groove is smaller than the width of the injection channel, and the width of the valve body in the axial direction perpendicular to the cylinder is smaller than the width of the valve groove in this direction, so that a clearance fit is formed between the valve body and the valve groove.

[0019] In some embodiments,

[0020] In the projection plane of the axial end face of the cylinder, the setting area of ​​the pressure inlet is defined by the following boundaries: the side extension line of the sliding vane groove, the inner circle boundary line of the roller, and the outer circle boundary line of the roller when the air intake port is just closed by the roller.

[0021] In some embodiments,

[0022] In the projection surface of the axial end face of the partition or the flange, the area S of the pressure inlet and the displacement V of the cylinder satisfy the following relationship: 0.05‰mm^(-1)≤S / V≤1‰mm^(-1); the line connecting the center of the cylinder and the center of the pressure inlet is a radial connecting line; the radial connecting line intersects with the boundary line of the inner circle of the roller and the boundary line of the outer circle of the roller when the air intake port is just closed by the roller; the intersection points are the first intersection point and the second intersection point, respectively; the distance between the first intersection point and the second intersection point is L; the diameter of the pressure inlet is D, and the following relationship: LD>1mm is satisfied.

[0023] In some embodiments,

[0024] The air-compensating and enthalpy-increasing compressor is a two-cylinder compressor, the cylinder includes an upper cylinder and a lower cylinder, the partition or flange is a partition arranged between the upper cylinder and the lower cylinder, the partition is provided with a pressure introduction channel 1, a valve slot 1 and a pressure introduction port 1, the upper cylinder is provided with an injection channel 1, the valve body includes a valve body 1 and a valve body 2, at least part of the structure of the valve body 1 is arranged in the valve slot 1, at least part of the structure of the valve body 1 is arranged in the injection channel 1, and the valve body 1 can move in the valve slot 1 and the injection channel 1 to open or close the injection channel 1;

[0025] The partition is also provided with a second pressure introduction channel, a second valve slot and a second pressure introduction port, the lower cylinder is provided with a second injection channel, at least part of the structure of the second valve body is provided in the second valve slot, at least part of the structure of the second valve body is provided in the second injection channel, and the second valve body can move in the second valve slot and the second injection channel to open or close the second injection channel;

[0026] The air-supplementing and enthalpy-increasing channel includes an air-supplementing channel 1 and an air-supplementing channel 2. The air-supplementing channel 1 is opened on the upper cylinder, and the air-supplementing channel 2 is opened on the lower cylinder. The enthalpy-increasing port includes an enthalpy-increasing port 1 and an enthalpy-increasing port 2. The enthalpy-increasing port 1 is opened from the axial end surface of the upper cylinder facing the partition in a direction away from the partition until it is connected with the air-supplementing channel 1. The enthalpy-increasing port 2 is opened from the axial end surface of the lower cylinder facing the partition in a direction away from the inner part of the partition until it is connected with the air-supplementing channel 2.

[0027] In some embodiments,

[0028] The air-injection enthalpy-increasing compressor is a single-cylinder compressor, the partition plate or flange includes an upper flange and a lower flange, the upper flange or the lower flange is provided with the pressure introduction channel, the pressure introduction port, the valve slot and the injection channel, at least part of the structure of the valve body is arranged in the valve slot, at least part of the structure of the valve body is arranged in the injection channel, and the valve body can move in the valve slot and the injection channel to open or close the injection channel;

[0029] The enthalpy increase port and the air-supplementing enthalpy increase channel are arranged on the cylinder. The enthalpy increase port is opened from the axial end surface of the cylinder facing the valve slot in a direction away from the valve slot to communicate with the air-supplementing enthalpy increase channel.

[0030] In some embodiments,

[0031] The air-compensating and enthalpy-increasing compressor is a single-cylinder compressor, the partition plate or flange includes an upper flange and a lower flange, the upper flange or the lower flange is provided with the pressure introduction channel, the pressure introduction port and the valve slot, the injection channel is provided on the cylinder, at least part of the structure of the valve body is provided in the valve slot, at least part of the structure of the valve body is provided in the injection channel, and the valve body can move in the valve slot and the injection channel to open or close the injection channel;

[0032] The enthalpy increase port and the air-supplementing enthalpy increase channel are arranged on the cylinder. The enthalpy increase port is opened from the axial end surface of the cylinder facing the valve slot in a direction away from the valve slot to communicate with the air-supplementing enthalpy increase channel.

[0033] The present invention also provides an air conditioner, which comprises the aforementioned air-supplying and enthalpy-increasing compressor.

[0034] The air-injection enthalpy-increasing compressor and air conditioner provided by the present invention have the following beneficial effects:

[0035] 1. The present invention provides an air-increasing heat-increasing passage on the cylinder, an injection passage is provided on the end surface of a partition or flange facing the cylinder, or an injection passage is provided on the end surface of the cylinder facing the partition or flange, a valve slot is provided on the partition or flange in contact with the injection passage, a pressure introduction passage is also provided on the other side of the valve slot, and the refrigerant in the internal cavity of the cylinder can be introduced, and at least part of the structure of the valve body is provided in the valve slot, so that one end of the valve body can withstand the refrigerant pressure in the cylinder introduced from the pressure introduction passage, and the other end of the valve body can withstand the air-increasing heat-increasing pressure from the air-increasing heat-increasing passage, so that the valve body can be driven to open the injection passage or close the injection passage according to the relationship between the air-increasing pressure and the pressure in the internal cavity of the cylinder. The injection channel is opened when the air supply pressure is greater than the internal cavity pressure, and is closed when the air supply channel is less than the internal cavity pressure of the cylinder, thereby realizing the effect of automatically controlling whether to replenish air according to the relationship between the air supply and cylinder pressure, improving the timeliness of opening or closing the check valve, and being able to adaptively adjust the air supply time according to the size of the working conditions, thereby solving the problem of poor enthalpy increase effect caused by unreasonable enthalpy increase time; and the present invention also introduces the pressure through the setting form of the channel, compared with the prior art method of introducing refrigerant pressure through the cylinder air supply inlet, the injection channel can be fully opened without blocking it, and the air supply volume can be effectively increased to meet the required air supply requirements.

[0036] 2. Since the present invention is provided with a pressure introduction channel, it is not necessary to set the channel cross-sectional area of ​​the valve groove to be larger, but the flow area of ​​the valve groove can be reduced. It is only necessary to ensure that the valve body can move in it, thereby effectively avoiding the valve body from tilting and deviating from the central axis during the movement, ensuring that it always moves up and down along the central axis to prevent it from hitting the inner wall of the valve groove, and increasing the contact surface between the valve body and the partition (forming surface contact to avoid point contact caused by tilt, etc.), reducing stress concentration, thereby reducing the wear on the partition, reducing energy consumption, and improving operational reliability; and the pressure introduction channel of the present invention, in addition to serving as the compression chamber pressure introduction channel on the back of the valve body, can also be used as a resonance chamber of the compressor, which can effectively reduce the airflow noise of the compressor.

[0037] 3. The present invention further provides a pressure introduction port on the axial end surface of the partition plate or flange facing the internal cavity of the cylinder, one end of the pressure introduction port is connected to the internal cavity of the cylinder, and one end of the pressure introduction channel extends to connect with the pressure introduction port. When the roller rotates until the air intake port of the cylinder is connected to the injection channel, the pressure introduction port can introduce gas with a pressure greater than the air supply pressure from the internal cavity into the pressure introduction channel. At the same time, the pressure introduction port is closed by the roller, and when the roller rotates to connect the air intake port with the injection channel, the pressure introduction port can be opened by the pressure. The special setting of the force introduction port allows the gas with a pressure greater than the air supply pressure to enter the pressure introduction channel. At the same time, the pressure introduction port is closed by the roller, so that the valve body is abutted against the outlet of the air supply enthalpy increase channel due to the pressure difference at both ends (the pressure of the pressure introduction channel is greater than the pressure of the air supply channel), so that the injection channel is not connected with the air supply enthalpy increase channel. At this time, the cylinder cavity is not supplied with air through the injection channel, thereby effectively avoiding the situation where the injection channel is connected with the intake port and affects the normal intake of the compressor, thereby ensuring the enthalpy increase effect and not affecting the normal enthalpy increase work. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a cross-sectional view of the pump body structure of the air-injection enthalpy-increasing compressor according to the first embodiment of the present invention (single cylinder, the injection channel is arranged on the lower flange);

[0039] Figure 2a yes Figure 1 A top view of the lower flange in FIG.

[0040] Figure 2b yes Figure 1 A three-dimensional view of the lower flange in FIG.

[0041] Figure 2c yes Figure 1 A three-dimensional diagram of the cylinder in FIG.

[0042] Figure 3It is a cross-sectional view of the pump body structure of the air-compensating and enthalpy-increasing compressor according to the second embodiment of the present invention (single cylinder, the injection channel is arranged in the cylinder);

[0043] Figure 4a yes Figure 3 A top view of the lower flange in FIG.

[0044] Figure 4b yes Figure 3 A three-dimensional view of the lower flange in FIG.

[0045] Figure 4c yes Figure 3 A three-dimensional diagram of the cylinder in FIG.

[0046] Figure 5 4 is a cross-sectional view of the pump body structure of the air-injection and enthalpy-increasing compressor according to the third embodiment of the present invention (double cylinder);

[0047] Figure 6a yes Figure 5 A three-dimensional view of the upper cylinder in FIG.

[0048] Figure 6b yes Figure 5 A three-dimensional view of the lower cylinder in FIG.

[0049] Figure 7a yes Figure 5 A perspective view of a first side of a partition in FIG.

[0050] Figure 7b yes Figure 5 A perspective view of a second side of the partition;

[0051] Figure 8 It is a diagram showing the opening state of the valve and the connection between the injection channel and the air intake port when the roller of the compressor shown in the first to third embodiments of the present invention reaches different positions when running in the cylinder.

[0052] Fig. 9 It is a diagram of the setting area of ​​the pressure inlet of the compressor shown in the first to third embodiments of the present invention;

[0053] Fig.10 It is a graph showing the relationship between the pressure inlet area S / displacement V and the compressor performance of the present invention.

[0054] The reference numerals are:

[0055] 1. Cylinder; 11. Upper cylinder; 12. Lower cylinder; 2. Bulkhead or flange; 21. Upper flange; 22. Lower flange; 3. Valve body; 31. Valve body 1; 32. Valve body 2; 4. Air supply enthalpy increase channel; 41. Air supply channel 1; 42. Air supply channel 2; 5. Injection channel; 51. Injection channel 1; 52. Injection channel 2; 6. Valve slot; 61. Valve slot 1; 62. Valve slot 2; 7. Pressure introduction channel; 71. Pressure introduction channel 1; 72. Pressure introduction channel 2; 8. Enthalpy increase port; 81. Enthalpy increase port 1; 82. Enthalpy increase port 2; 9. Pressure introduction Inlet; 91. Pressure inlet one; 92. Pressure inlet two; 10. Side extension line of the vane groove; 13. Boundary line of the inner circle of the roller; 14. Boundary line of the outer circle of the roller when the air intake port is just closed by the roller; 15. Roller; 151. Upper roller; 152. Lower roller; 16. Inner circle of the roller; 17. Vane; 18. Position where the air intake port is just closed; 19. Inward contraction line of the outer circle of the roller; 20. Pressure inlet setting area; 23. Crankshaft; 24. Vane groove; 25. Air intake chamber; 26. Compression chamber; 27. Eccentric direction of the crankshaft; 28. Radial connecting line. DETAILED DESCRIPTION

[0056] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0059] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0060] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0062] like Figure 1-10As shown, the present invention provides an air-compensating enthalpy-increasing compressor (preferably a rolling rotor type enthalpy-increasing compressor), which comprises:

[0063] A cylinder 1, a partition or flange 2 and a valve body 3, wherein the partition or flange 2 is connected to the axial end face of the cylinder 1, and an air supplement and enthalpy increase channel 4 is provided inside the cylinder 1, and an injection channel 5 is provided in a concave manner on the axial end face of the partition or flange 2 connected to the cylinder 1 (see Figure 1-2c ), or the cylinder 1 is provided with an injection channel 5 in a concave manner on one axial end surface connected to the partition plate or flange 2 (see Figure 3-4c );

[0064] A valve groove 6 is also provided at a position connected to the injection channel 5 on the partition or flange 2, and the radial inner side of the injection channel 5 is connected to the internal cavity of the cylinder 1. At least part of the structure of the valve body 3 is arranged in the valve groove 6. A pressure introduction channel 7 is also provided on the side of the valve groove 6 away from the injection channel 5. One end of the pressure introduction channel 7 is connected to the valve groove 6, and the other end can be connected to the internal cavity of the cylinder 1. The valve body 3 can move in the valve groove 6 and the injection channel 5 to open or close the injection channel 5.

[0065] The present invention provides an air-increasing heat-increasing channel on the cylinder, an injection channel is provided on the end surface of the partition or flange facing the cylinder, or an injection channel is provided on the end surface of the cylinder facing the partition or flange, a valve slot is provided on the partition or flange in contact with the injection channel, a pressure introduction channel is also provided on the other side of the valve slot, and a refrigerant in the internal cavity of the cylinder can be introduced, and at least a part of the structure of the valve body is provided in the valve slot, so that one end of the valve body can withstand the refrigerant pressure in the cylinder introduced from the pressure introduction channel, and the other end of the valve body can withstand the air-increasing pressure from the air-increasing heat-increasing channel, so that the valve body can be driven to open or close the injection channel according to the relationship between the air-increasing pressure and the pressure of the internal cavity of the cylinder, the injection channel is opened when the air-increasing pressure is greater than the internal cavity pressure, and the injection channel is closed when the air-increasing pressure is less than the internal cavity pressure of the cylinder, so as to achieve the effect of automatically controlling whether to perform air-increasing according to the relationship between the air-increasing pressure and the cylinder pressure, thereby improving the timeliness of opening or closing the check valve, and being able to adaptively adjust the air-increasing time according to the size of the working condition, thereby solving the problem of unreasonable enthalpy increase time caused The problem of poor enthalpy increase effect; and the present invention also fully opens the injection channel without blocking it, compared with the prior art method of introducing refrigerant pressure through the cylinder air inlet, through the setting form of the pressure introduction channel, and can effectively increase the air supply volume to meet the required air supply requirements; because the pressure introduction channel is set up in the present invention, it is not necessary to set the channel cross-sectional area of ​​the valve slot larger, but the flow area of ​​the valve slot can be reduced, and it is only necessary to ensure that the valve body can move in it, thereby effectively avoiding the situation where the valve body tilts and deviates from the central axis during the movement, ensuring that it always moves up and down along the central axis direction to prevent it from hitting the inner wall of the valve slot, and increasing the contact surface between the valve body and the partition (forming surface contact, avoiding point contact caused by tilt, etc.), reducing stress concentration, thereby reducing wear on the partition, reducing energy consumption, and improving operational reliability; and in addition to serving as the compression chamber pressure introduction channel on the back of the valve body, the pressure introduction channel of the present invention can also be used as a resonance chamber of the compressor, which can effectively reduce the airflow noise of the compressor.

[0066] In some embodiments,

[0067] The pressure introduction channel 7 can introduce the refrigerant in the internal cavity of the cylinder 1 and act on one end of the valve body 3, and the air-increasing enthalpy channel 4 can introduce the refrigerant and act on the other end of the valve body 3. When the refrigerant pressure introduced by the pressure introduction channel 7 is less than the refrigerant pressure in the air-increasing enthalpy channel 4, the valve body 3 moves toward the direction of the pressure introduction channel 7 and then opens the injection channel 5. When the refrigerant pressure introduced by the pressure introduction channel 7 is greater than the refrigerant pressure in the air-increasing enthalpy channel 4, the valve body 3 moves toward the direction of the injection channel 5 and then closes the injection channel 5. When the injection channel 5 is opened, the refrigerant in the air-increasing enthalpy channel 4 can be replenished into the internal cavity of the cylinder 1 through the injection channel 5.

[0068] This is a further preferred structural form of the pressure introduction channel of the present invention, which can introduce the refrigerant pressure of the compression chamber, and automatically control whether the valve body moves to open the injection channel for air replenishment, or close the injection channel for no air replenishment according to the relationship between the compression pressure and the air replenishment pressure, and adaptively adjust the specific time of air replenishment according to the size of the working conditions, thereby solving the problem of poor enthalpy increase effect caused by unreasonable enthalpy increase time.

[0069] The compression chamber pressure introduction channel (pressure introduction channel 7) of the present invention: one side of the channel is connected to the cylinder pressure introduction port, and the other side is connected to the valve away from the enthalpy increase port. This side of the channel is blocked by the valve. Regardless of the position of the valve, the channel only provides the compression chamber pressure introduction function and does not serve as the injection channel for the medium-pressure refrigerant. In addition, the channel has a certain clearance volume and can be used as a compression chamber resonance chamber to silence the refrigerant.

[0070] In some embodiments,

[0071] A pressure inlet 9 is provided on the axial end surface of the partition or flange 2 facing the internal cavity of the cylinder 1, one end of the pressure inlet 9 is connected to the internal cavity of the cylinder 1, and one end of the pressure introduction channel 7 extends to connect with the pressure inlet 9 to communicate with the internal cavity, so that the refrigerant in the internal cavity can be introduced into the pressure introduction channel 7;

[0072] It also includes a roller 15, which is arranged in the internal cavity of the cylinder 1. Before the roller 15 rotates to connect the air intake port of the cylinder 1 with the injection channel 5, the pressure inlet 9 can introduce gas with a pressure greater than the air replenishment pressure from the internal cavity into the pressure introduction channel 7. When the roller 15 rotates to connect the air intake port of the cylinder 1 with the injection channel 5, the pressure inlet 9 is closed by the roller 15.

[0073] This is a preferred structural form of the present invention. The present invention further provides a pressure introduction port on the axial end surface of the partition or flange facing the internal cavity of the cylinder, one end of the pressure introduction port is connected to the internal cavity of the cylinder, and one end of the pressure introduction channel extends to connect with the pressure introduction port. Before the roller 15 rotates to the air intake port of the cylinder 1 and is connected to the injection channel 5, the pressure introduction port can introduce gas with a pressure greater than the gas replenishment pressure from the internal cavity into the pressure introduction channel (for example, Figure 8 When the roller rotates until the air intake port of the cylinder is connected to the injection channel, the pressure inlet port is closed by the roller (for example, Figure 8 In state 4), before the roller rotates to connect the air intake port with the injection channel, the special setting of the pressure inlet port can allow the gas with a pressure greater than the air supply pressure to enter the pressure inlet channel, and when the roller rotates to connect the air intake port with the injection channel, the pressure inlet port is closed by the roller, so that the valve body is abutted against the outlet of the air supply enthalpy increase channel due to the pressure difference at both ends (the pressure of the pressure in the pressure inlet channel is greater than the pressure in the air supply channel), so that the injection channel is not connected with the air supply enthalpy increase channel. At this time, the cylinder inner cavity is not supplied with air through the injection channel, thereby effectively avoiding the situation that the injection channel is connected with the air intake port and affects the normal air intake of the compressor, thereby ensuring the enthalpy increase effect and not affecting the normal enthalpy increase work.

[0074] The present invention arranges an enthalpy increase channel and an enthalpy increase port at a position away from the air intake port and close to the slide groove on the cylinder, and arranges a valve groove, an injection channel, a pressure introduction channel, and a pressure introduction port on the lower flange adjacent to the cylinder enthalpy increase port and at a position corresponding to the cylinder enthalpy increase port axially. The valve groove accommodates an axially movable valve, which has the function of covering the cylinder enthalpy increase port and connecting and isolating the enthalpy increase channel with the injection channel. The pressure introduction port is arranged in the pressure introduction port setting area, and the pressure introduction channel connects the valve groove on the lower flange with the pressure introduction port.

[0075] In some embodiments,

[0076] The pressure introduction channel 7 includes a first section extending along the axial direction of the partition or flange 2 and a second section extending along the radial direction of the partition or flange 2, so that the valve groove 6, the first section, the second section and the pressure introduction port 9 are connected in sequence; the air-supplementing enthalpy-increasing channel 4 extends along the radial direction of the cylinder 1, and the cylinder 1 is also provided with an enthalpy-increasing port 8, and the enthalpy-increasing port 8 extends from an axial end face of the cylinder 1 (preferably along the axial direction) in a direction away from the partition or flange 2, and extends to be connected with the air-supplementing enthalpy-increasing channel 4, and the enthalpy-increasing port 8 is connected to the injection channel 5.

[0077] This is the preferred structural form of the pressure introduction channel, the air supplement enthalpy increase channel and the enthalpy increase port of the present invention, that is, the pressure introduction channel preferably extends along the axial + radial direction of the partition or flange, such as Figure 1 As shown, it preferably extends in the vertical direction and horizontally, and the air supply channel preferably extends in the radial direction, as shown in FIG. Figure 1 As shown, it extends in the horizontal direction. Through the setting of the enthalpy increase port, the air-supply refrigerant in the air-supply channel can be guided to the end face of the valve body through the enthalpy increase port, so that the valve body can be pushed to move according to the size of the air-supply pressure to open the injection channel, thereby realizing the functions of automatic air supply and automatic closing of air supply according to the size relationship between the air-supply pressure and the compression pressure.

[0078] In some embodiments,

[0079] In the projection surface of the longitudinal plane, in the axial direction perpendicular to the cylinder 1, the width of the first section of the pressure introduction channel 7 is smaller than the width of the valve groove 6, the width of the valve groove 6 is smaller than the width of the injection channel 5, and the width of the valve body 3 in the axial direction perpendicular to the cylinder 1 is smaller than the width of the valve groove 6 in this direction, so that a clearance fit is formed between the valve body 3 and the valve groove 6.

[0080] The pressure introduction channel of the present invention is preferably smaller in width than the width of the valve groove. The pressure introduction channel only needs to introduce the pressure in the compression chamber, and there is no need to open a larger channel area to avoid affecting the strength of the cylinder. The width of the valve groove is smaller than the width of the injection channel, and the valve groove only needs to accommodate the valve body therein. Reducing the width of the valve groove can effectively limit the valve body and prevent the valve body from shifting or tilting during movement, thereby avoiding the valve body from hitting the partition or the inner wall of the valve groove and causing stress concentration, reducing the wear of the partition, etc., and improving operational reliability. The width of the injection channel is large enough to ensure that there is a sufficient flow of refrigerant to replenish the compression chamber with air and increase enthalpy, thereby improving the enthalpy increase performance.

[0081] In some embodiments,

[0082] In the projection plane of the axial end face of the cylinder 1, the setting area of ​​the pressure inlet 9 is defined by the following boundaries: the side extension line 10 of the sliding vane groove, the inner circle boundary line 13 of the roller, and the outer circle boundary line 14 of the roller when the air intake port is just closed by the roller.

[0083] The pressure inlet setting area of ​​the present invention is limited by the above boundaries ( Fig. 9), which can effectively ensure that when the roller 15 rotates to the air intake port of the cylinder 1 and is connected to the injection channel 5, the pressure inlet 9 can introduce gas with a pressure greater than the air supply pressure from the internal cavity into the pressure introduction channel 7, and at the same time, the pressure inlet 9 is closed by the roller 15, so as to always ensure that the air supply channel will not be opened to leak gas to the air intake port, thereby ensuring that gas blowby will not occur.

[0084] The principle of the present invention to suppress the occurrence of enthalpy increase blowby zone (such as Figure 8 ): In state 1, once the pressure in the compression chamber exceeds the intermediate pressure (higher than the suction pressure and lower than the exhaust pressure), the pressure introduction channel introduces the pressure in the compression chamber into the back of the valve, pushing the valve to move axially, contacting the cylinder and blocking the enthalpy increase port, the injection channel is isolated from the enthalpy increase port and the enthalpy increase channel, and the compressor stops increasing enthalpy. When the roller runs to state 2, the pressure introduction port is blocked by the roller, and the high-pressure refrigerant is sealed in the pressure introduction channel. The valve continues to be in a state of isolating the injection channel from the enthalpy increase port. When the roller runs to state 3, the pressure introduction port continues to be blocked by the roller, and the injection channel is about to be connected to the cylinder suction, and the valve continues to be in a state of isolating the injection channel from the enthalpy increase port. When the roller runs to state 4, the injection channel is connected to the cylinder suction port, the refrigerant in the pressure introduction channel has not been released, and its pressure has not been reduced. The valve continues to be in a state of isolating the injection channel from the enthalpy increase port, and the refrigerant in the enthalpy increase channel cannot be sprayed into the cylinder, affecting the normal suction of the compressor. When the roller runs to state 5, the cylinder suction port is about to be closed, and the pressure inlet port is about to be opened by the roller, but at this time the pressure in the pressure introduction channel has not yet decreased, and the enthalpy increase port cannot be connected to the injection channel. When the roller runs to state 6, the suction port is closed, the pressure inlet port is opened, the pressure in the pressure introduction channel is reduced, the valve is opened, the enthalpy increase port is connected to the injection channel, and the medium-pressure refrigerant is sprayed into the compression chamber from the enthalpy increase channel, the enthalpy increase port, and the injection channel. It can be seen from the above operation process that according to the setting of the present invention, the enthalpy increase gas blowby zone is suppressed, and the enthalpy increase port cannot be connected to the suction port throughout the entire operation cycle of the roller, and has no effect on the normal enthalpy increase operation of the compressor.

[0085] Further preferably, the boundary line 14 of the outer circle of the roller when the air inlet is just closed by the roller is replaced by the inward contraction line 19 of the outer circle of the roller when the air inlet is just closed, so that the pressure inlet setting area 20 can be further reduced to further ensure that there will be no gas blowby. The vane reciprocates along the side extension line of the vane groove, and the compression chamber pressure can be introduced to the right side of the side extension line 10 of the vane groove (close to the exhaust side). The roller is eccentrically arranged in the cylinder for circular motion, and the maximum boundary of its inner circle naturally forms the boundary line of the inner circle of the roller when it runs one circle along the cylinder. The compression chamber pressure cannot be received within the boundary line, but the compression chamber pressure can be received outside the boundary line. The outer circle of the roller when the air inlet is just closed: the inner circle cannot receive the suction pressure, but the outer circle can receive the suction pressure. The inward contraction line of the roller outer circle when the air intake port is just closed: the area between the contraction line and the roller outer circle when the air intake port is just closed is the critical area. Arranging the pressure inlet in the critical area can make the pressure inlet be opened just when the air intake port is closed.

[0086] In some embodiments,

[0087] In the projection surface of the axial end face of the partition or flange 2, the area S of the pressure inlet 9 and the displacement V of the cylinder 1 satisfy: 0.05‰mm^(-1)≤S / V≤1‰mm^(-1). To ensure the timeliness of the opening of the pressure inlet, the distance N between the inward contraction line and the outer circle of the roller should be: 0.5mm≤N≤3mm. This range naturally limits the range of the angle θ. To avoid the pressure inlet from entering the boundary line of the inner circle of the roller and avoiding the high pressure of the inner circle of the roller from being connected to the pressure inlet, the line connecting the center of the cylinder 1 and the center of the pressure inlet 9 is made into a radial connecting line 28. The radial connecting line 28 intersects with the boundary line 13 of the inner circle of the roller and the boundary line 14 of the outer circle of the roller when the air intake port is just closed by the roller. The intersection points are the first intersection point and the second intersection point respectively. The distance between the first intersection point and the second intersection point is L. The diameter of the pressure inlet 9 is D, and it satisfies: LD>1mm.

[0088] In order to reduce the delay when the valve closes (the length of time it takes to close the valve), the area of ​​the pressure inlet needs to be limited. A smaller pressure inlet will result in untimely valve closing, causing the refrigerant in the compression chamber to flow back into the enthalpy increase channel, while a larger pressure inlet area will increase the compressor clearance volume and affect the compressor performance. Therefore, the area S of the pressure inlet needs to be limited. Experimental verification has shown that the compressor performance first increases and then decreases with the increase of the enthalpy increase port area. The optimal pressure inlet area S and the corresponding cylinder displacement V should satisfy the following requirements: 0.05‰mm(^-1)≤S / V≤1‰mm(^-1), which can improve the enthalpy increase performance of the compressor. To ensure the timeliness of the opening of the pressure inlet, the distance N between the inward contraction line and the outer circle of the roller should be: 0.5mm≤N≤3mm. This range naturally limits the range of the angle θ. To avoid the pressure inlet from entering the boundary line of the inner circle of the roller, the radial distance L between the boundary line of the inner circle of the roller and the outer circle of the roller and the radial length D of the pressure inlet should satisfy: LD>1mm, which can further ensure that no blowby occurs.

[0089] In some embodiments,

[0090] The air-injection and enthalpy-increasing compressor is a two-cylinder compressor, the cylinder 1 includes an upper cylinder 11 and a lower cylinder 12, the partition or flange 2 is a partition arranged between the upper cylinder 11 and the lower cylinder 12 (or flange, that is, the air-injection channel and the enthalpy-increasing port can be opened on the partition or on the flange), the partition is provided with a pressure introduction channel 71, a valve groove 61 and a pressure introduction port 91, the upper cylinder 11 is provided with an injection channel 51, the valve body 3 includes a valve body 31 and a valve body 32, at least part of the structure of the valve body 31 is arranged in the valve groove 61, at least part of the structure of the valve body 31 is arranged in the injection channel 51, and the valve body 31 can move in the valve groove 61 and the injection channel 51 to open or close the injection channel 51;

[0091] The partition plate is provided with a second pressure introduction channel 72, a second valve groove 62 and a second pressure introduction port 92, the lower cylinder 12 is provided with a second injection channel 52, at least part of the structure of the second valve body 32 is provided in the second valve groove 62, at least part of the structure of the second valve body 32 is provided in the second injection channel 52, and the second valve body 32 can move in the second valve groove 62 and the second injection channel 52 to open or close the second injection channel 52;

[0092] The air-supplementing and enthalpy-increasing channel 4 includes an air-supplementing channel 1 41 and an air-supplementing channel 2 42. The air-supplementing channel 1 41 is opened on the upper cylinder 11, and the air-supplementing channel 2 42 is opened on the lower cylinder 12. The enthalpy-increasing port 8 includes an enthalpy-increasing port 1 81 and an enthalpy-increasing port 2 82. The enthalpy-increasing port 1 81 is opened from the axial end face of the upper cylinder 11 facing the partition in a direction away from the partition until it is connected with the air-supplementing channel 1 41. The enthalpy-increasing port 2 82 is opened from the axial end face of the lower cylinder 12 facing the partition in a direction away from the partition until it is connected with the air-supplementing channel 2 42.

[0093] This is a further preferred structural form of the air-increasing and reheat-increasing compressor of the present invention, that is, a double-cylinder structure of upper and lower cylinders. By connecting the upper end of the air-increasing and reheat-increasing channel with injection channel one, valve body one, etc., and connecting the lower end of the air-increasing and reheat-increasing channel with injection channel two, valve body two, etc., the effect of increasing the enthalpy of air in the upper and lower cylinders can be achieved respectively, and the function of automatic air replenishment can be achieved according to the size relationship between the respective compression chamber pressures and the air replenishment pressures. The air replenishment time can be adaptively adjusted according to the size of the working conditions, which solves the problem of poor enthalpy increase effect caused by unreasonable enthalpy increase time; and it can increase the air replenishment volume for both cylinders, reduce stress concentration, and reduce noise.

[0094] like Figure 1-2c , in some embodiments,

[0095] The air-injection enthalpy-increasing compressor is a single-cylinder compressor, the partition plate or flange 2 includes an upper flange 21 and a lower flange 22, the upper flange 21 or the lower flange 22 is provided with the pressure introduction channel 7, the pressure introduction port 9, the valve slot 6 and the injection channel 5, at least part of the structure of the valve body 3 is arranged in the valve slot 6, at least part of the structure of the valve body 3 is arranged in the injection channel 5, and the valve body 3 can move in the valve slot 6 and the injection channel 5 to open or close the injection channel 5;

[0096] The enthalpy increasing port 8 and the air supplementing enthalpy increasing channel 4 are arranged on the cylinder 1 , and the enthalpy increasing port 8 is opened from the axial end face of the cylinder 1 facing the valve groove 6 in a direction away from the valve groove 6 until it is connected with the air supplementing enthalpy increasing channel 4 .

[0097] This is a further preferred structural form of the first embodiment of the air-increasing enthalpy compressor of the present invention, that is, a single-cylinder structure. Through the connection between the air-increasing enthalpy-increasing channel and the injection channel, valve body, etc., the enthalpy-increasing air-increasing effect of the single cylinder can be achieved, and the function of automatic air-increasing can be realized according to the size relationship between the pressure of the single compression chamber and the air-increasing pressure. The air-increasing time can be adaptively adjusted according to the size of the working conditions, which solves the problem of poor enthalpy-increasing effect caused by unreasonable enthalpy-increasing time; and it can increase the air-increasing amount, reduce stress concentration, and reduce noise for the single cylinder.

[0098] like Figure 3-4c , in some embodiments,

[0099] The air-compensating reheat-increasing compressor is a single-cylinder compressor, the partition plate or flange 2 includes an upper flange 21 and a lower flange 22, the upper flange 21 or the lower flange 22 is provided with the pressure introduction channel 7, the pressure introduction port 9 and the valve slot 6, the injection channel 5 is provided on the cylinder 1, at least part of the structure of the valve body 3 is provided in the valve slot 6, at least part of the structure of the valve body 3 is provided in the injection channel 5, and the valve body 3 can move in the valve slot 6 and the injection channel 5 to open or close the injection channel 5;

[0100] The enthalpy increasing port 8 and the air supplementing enthalpy increasing channel 4 are arranged on the cylinder 1 , and the enthalpy increasing port 8 is opened from the axial end face of the cylinder 1 facing the valve groove 6 in a direction away from the valve groove 6 until it is connected with the air supplementing enthalpy increasing channel 4 .

[0101] This is a further preferred structural form of the second embodiment of the air-increasing and reheat-increasing compressor of the present invention, that is, a single-cylinder structure. Through the connection between the air-increasing and reheat-increasing channel and the injection channel, valve body, etc., the effect of reheat-increasing and reheat-increasing air for the single cylinder can be achieved, and the function of automatic air replenishment can be realized according to the size relationship between the pressure of the single compression chamber and the air replenishment pressure. The air replenishment time can be adaptively adjusted according to the size of the working conditions, which solves the problem of poor reheat-increasing effect caused by unreasonable reheat-increasing time; and it can increase the air replenishment amount for the single cylinder, reduce stress concentration, and reduce noise.

[0102] The compressor structure of the present invention: The present invention relates to a rolling rotor type compressor, which includes a liquid distributor, a shell, a motor, and a pump body assembly. The liquid distributor is arranged outside the shell and is used to transport low-pressure refrigerant to the pump body assembly. The shell wraps the motor and the pump body assembly and forms an airtight isolation with the external environment. The motor is fixed to the upper part of the shell by interference fit, and the pump body assembly is arranged at the lower part of the motor and connected to the shell by a welding point formed by welding. The pump body assembly includes an upper flange cylinder, a lower flange, a crankshaft, a roller, and a sliding vane or a partition.

[0103] The upper and lower flanges are arranged at both ends of the pump body assembly. Rollers and vanes are arranged in the cylinder respectively. The crankshaft sleeve is arranged in the shaft holes of the upper and lower flanges, and the part passing through the upper flange is connected to the rotor assembly of the motor. The roller sleeve is arranged on the eccentric part of the crankshaft, and the vane is arranged in the cylinder vane groove and can perform linear reciprocating motion. One end of the vane abuts against the roller to separate the space in the cylinder into an air intake chamber and a compression chamber. When the motor rotates, it drives the crankshaft to rotate, and the refrigerant sucked into the cylinder is compressed and discharged into the shell.

[0104] The enthalpy increasing structure of the present invention is as follows: one or more valve slots are arranged on the pump body, the first side of the valve slot is connected to the cylinder pressure inlet through the compression chamber pressure inlet channel, and the second side of the valve slot is provided with an injection channel connected to the compression chamber. The valve is limited to move between the cylinder valve slot and the adjacent partition (for a single-cylinder compressor, the component adjacent to the valve slot is the lower flange). The enthalpy increasing component is arranged outside the shell, and its lower bend pipe passes through the shell and is connected to the enthalpy increasing channel, the enthalpy increasing port, and the injection channel on the pump body in sequence. The valve size φd is designed to be larger than the enthalpy increasing port and smaller than the valve slot size φD, so as to ensure that the valve can move freely in the valve chamber and the valve can cover the enthalpy increasing port, so as to achieve the closure of the valve to the enthalpy increasing port.

[0105] Enthalpy increase process: Introduce medium-pressure refrigerant from the system into the enthalpy increase component. The medium pressure is higher than the suction pressure and lower than the exhaust pressure. When the compression chamber pressure is lower than the medium pressure, the pressure on the side of the valve close to the enthalpy increase port is greater than the pressure on the side away from the enthalpy increase port. The valve moves to the side away from the enthalpy increase port, the enthalpy increase port opens, and the medium-pressure refrigerant passes through the enthalpy increase component, the enthalpy increase channel, the enthalpy increase port, and the injection channel in sequence to enter the compression chamber; when the compression chamber pressure is higher than the medium pressure, the pressure on the side of the valve close to the enthalpy increase port is lower than the pressure on the side away from the enthalpy increase port. The valve moves to the side close to the enthalpy increase port, and the enthalpy increase port closes to prevent the refrigerant in the compression chamber from flowing out of the compression chamber.

[0106] The present invention also provides an air conditioner, which comprises the aforementioned air-supplying and enthalpy-increasing compressor.

[0107] The present invention arranges a check valve on the compressor to greatly improve the enthalpy increase effect of the compressor and increase the cooling and heating capacity of the compressor. However, during the operation of the compressor, there is a section [enthalpy increase blowby zone]: the injection channel is connected to the cylinder intake port, which not only fails to increase the enthalpy increase of the compressor, but also affects the normal intake of the compressor, thereby inhibiting the further improvement of the enthalpy increase effect of the compressor.

[0108] The present invention provides a valve, an enthalpy increase channel, an injection channel, a pressure introduction channel, and a pressure introduction port on the compressor. The pressure introduction port is arranged at a specific position of the compression chamber, so that when the compressor runs to the enthalpy increase blowby zone, the check valve is kept in a closed state, and the check valve is opened immediately after the suction is completed, without affecting the normal enthalpy increase work.

[0109] Beneficial effects:

[0110] Through the above structural arrangement of the present invention, the appearance of the enthalpy increase blowby zone is suppressed, and the enthalpy increase effect of the compressor is further improved. The present invention can also be used in compressors with three cylinders or more.

[0111] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An air-injection enthalpy-increasing compressor, characterized in that: include: A cylinder (1), a partition or a flange (2) and a valve body (3), wherein the partition or the flange (2) is connected to an axial end face of the cylinder (1), and an air supplement and enthalpy increase passage (4) is provided inside the cylinder (1); an injection passage (5) is provided in a recessed manner on an axial end face of the partition or the flange (2) connected to the cylinder (1), or an injection passage (5) is provided in a recessed manner on an axial end face of the cylinder (1) connected to the partition or the flange (2); A valve groove (6) is also provided on the partition plate or flange (2) at a position connected to the injection channel (5); the radial inner side of the injection channel (5) is connected to the internal cavity of the cylinder (1); at least part of the structure of the valve body (3) is arranged in the valve groove (6); a pressure introduction channel (7) is also provided on the side of the valve groove (6) away from the injection channel (5); one end of the pressure introduction channel (7) is connected to the valve groove (6) and the other end can be connected to the internal cavity of the cylinder (1); the valve body (3) can move in the valve groove (6) and the injection channel (5) to open or close the injection channel (5).

2. The air-compensating enthalpy-increasing compressor according to claim 1, characterized in that: The pressure introduction channel (7) can introduce the refrigerant in the internal cavity of the cylinder (1) and act on one end of the valve body (3), and the air-supply and enthalpy-increasing channel (4) can introduce the refrigerant and act on the other end of the valve body (3). When the refrigerant pressure introduced by the pressure introduction channel (7) is less than the refrigerant pressure in the air-supply and enthalpy-increasing channel (4), the valve body (3) moves in the direction of the pressure introduction channel (7) and then opens the injection channel (5). When the refrigerant pressure introduced by the pressure introduction channel (7) is greater than the refrigerant pressure in the air-supply and enthalpy-increasing channel (4), the valve body (3) moves in the direction of the injection channel (5) and then closes the injection channel (5). When the injection channel (5) is opened, the refrigerant in the air-supply and enthalpy-increasing channel (4) can be replenished into the internal cavity of the cylinder (1) through the injection channel (5).

3. The air-compensating enthalpy-increasing compressor according to claim 2, characterized in that: A pressure inlet (9) is provided on the axial end surface of the partition plate or flange (2) facing the internal cavity of the cylinder (1), one end of the pressure inlet (9) is connected to the internal cavity of the cylinder (1), and one end of the pressure inlet channel (7) extends to connect with the pressure inlet (9) to communicate with the internal cavity, so as to introduce the refrigerant in the internal cavity into the pressure inlet channel (7); The invention also comprises a roller (15), wherein the roller (15) is arranged in the internal cavity of the cylinder (1); before the roller (15) rotates to connect the air intake port of the cylinder (1) with the injection channel (5), the pressure introduction port (9) can introduce gas with a pressure greater than the air supply pressure from the internal cavity into the pressure introduction channel (7); when the roller (15) rotates to connect the air intake port of the cylinder (1) with the injection channel (5), the pressure introduction port (9) is closed by the roller (15).

4. The air-compensating enthalpy-increasing compressor according to claim 3, characterized in that: The pressure introduction channel (7) comprises a first section extending in the axial direction of the partition or flange (2) and a second section extending in the radial direction of the partition or flange (2), so that the valve groove (6), the first section, the second section and the pressure introduction port (9) are connected in sequence; the air supplementary enthalpy increasing channel (4) extends in the radial direction of the cylinder (1), and the cylinder (1) is also provided with an enthalpy increasing port (8), and the enthalpy increasing port (8) extends from an axial end face of the cylinder (1) in a direction away from the partition or flange (2) to be connected with the air supplementary enthalpy increasing channel (4), and the enthalpy increasing port (8) is connected with the injection channel (5).

5. The air-compensating enthalpy-increasing compressor according to claim 4, characterized in that: In the projection surface of the longitudinal plane, in the axial direction perpendicular to the cylinder (1), the width of the first section of the pressure introduction channel (7) is smaller than the width of the valve groove (6), the width of the valve groove (6) is smaller than the width of the injection channel (5), and the width of the valve body (3) in the axial direction perpendicular to the cylinder (1) is smaller than the width of the valve groove (6) in this direction, so that a clearance fit is formed between the valve body (3) and the valve groove (6).

6. The air-compensating enthalpy-increasing compressor according to claim 3, characterized in that: In the projection plane of the axial end face of the cylinder (1), the setting area of ​​the pressure inlet (9) is defined by the following boundaries: the side extension line (10) of the sliding vane groove, the inner circle boundary line (13) of the roller, and the outer circle boundary line (14) of the roller when the air intake port is just closed by the roller.

7. The air-compensating enthalpy-increasing compressor according to claim 6, characterized in that: In the projection plane of the axial end face of the partition or flange (2), the area S of the pressure inlet (9) and the displacement V of the cylinder (1) satisfy the following relationship: 0.05‰mm^(-1)≤S / V≤1‰mm^(-1), a line connecting the center of the cylinder (1) and the center of the pressure inlet (9) is a radial connecting line (28), the radial connecting line (28) intersects with the inner circle boundary line (13) of the roller and the outer circle boundary line (14) of the roller when the air intake port is just closed by the roller, the intersection points are respectively the first intersection point and the second intersection point, the distance between the first intersection point and the second intersection point is L, the diameter of the pressure inlet (9) is D, and the following relationship: LD>1mm is satisfied.

8. The air-compensating enthalpy-increasing compressor according to claim 4, characterized in that: The air-injection enthalpy-increasing compressor is a twin-cylinder compressor, wherein the cylinder (1) comprises an upper cylinder (11) and a lower cylinder (12), the partition or flange (2) is a partition arranged between the upper cylinder (11) and the lower cylinder (12), the partition is provided with a pressure introduction channel (71), a valve groove (61) and a pressure introduction port (91), an injection channel (51) is arranged on the upper cylinder (11), the valve body (3) comprises a valve body (31) and a valve body (32), at least part of the structure of the valve body (31) is arranged in the valve groove (61), at least part of the structure of the valve body (31) is arranged in the injection channel (51), and the valve body (31) can move in the valve groove (61) and the injection channel (51) to open or close the injection channel (51); The partition plate is also provided with a second pressure introduction channel (72), a second valve groove (62) and a second pressure introduction port (92); the lower cylinder (12) is provided with a second injection channel (52); at least a part of the structure of the second valve body (32) is arranged in the second valve groove (62); at least a part of the structure of the second valve body (32) is arranged in the second injection channel (52); the second valve body (32) can move in the second valve groove (62) and the second injection channel (52) to open or close the second injection channel (52); The air-supplementing and enthalpy-increasing channel (4) comprises an air-supplementing channel 1 (41) and an air-supplementing channel 2 (42), wherein the air-supplementing channel 1 (41) is opened on the upper cylinder (11), and the air-supplementing channel 2 (42) is opened on the lower cylinder (12), and the enthalpy-increasing port (8) comprises an enthalpy-increasing port 1 (81) and an enthalpy-increasing port 2 (82), wherein the enthalpy-increasing port 1 (81) is opened from the axial end surface of the upper cylinder (11) facing the partition in a direction away from the partition until it is connected with the air-supplementing channel 1 (41), and the enthalpy-increasing port 2 (82) is opened from the axial end surface of the lower cylinder (12) facing the partition in a direction away from the partition until it is connected with the air-supplementing channel 2 (42).

9. The air-compensating enthalpy-increasing compressor according to claim 4, characterized in that: The air-injection enthalpy-increasing compressor is a single-cylinder compressor, the partition plate or flange (2) comprises an upper flange (21) and a lower flange (22), the upper flange (21) or the lower flange (22) is provided with the pressure introduction channel (7), the pressure introduction port (9), the valve groove (6) and the injection channel (5), at least part of the structure of the valve body (3) is arranged in the valve groove (6), at least part of the structure of the valve body (3) is arranged in the injection channel (5), and the valve body (3) can move in the valve groove (6) and the injection channel (5) to open or close the injection channel (5); The enthalpy increasing port (8) and the air supplementing enthalpy increasing channel (4) are arranged on the cylinder (1); the enthalpy increasing port (8) is opened from the axial end surface of the cylinder (1) facing the valve groove (6) in a direction away from the valve groove (6) until it is connected with the air supplementing enthalpy increasing channel (4).

10. The air-compensating enthalpy-increasing compressor according to claim 4, characterized in that: The air-injection enthalpy-increasing compressor is a single-cylinder compressor, the partition plate or flange (2) comprises an upper flange (21) and a lower flange (22), the upper flange (21) or the lower flange (22) is provided with the pressure introduction channel (7), the pressure introduction port (9) and the valve groove (6), the injection channel (5) is provided on the cylinder (1), at least part of the structure of the valve body (3) is provided in the valve groove (6), at least part of the structure of the valve body (3) is provided in the injection channel (5), and the valve body (3) can move in the valve groove (6) and the injection channel (5) to open or close the injection channel (5); The enthalpy increasing port (8) and the air supplementing enthalpy increasing channel (4) are arranged on the cylinder (1); the enthalpy increasing port (8) is opened from the axial end surface of the cylinder (1) facing the valve groove (6) in a direction away from the valve groove (6) until it is connected with the air supplementing enthalpy increasing channel (4).

11. An air conditioner, characterized in that: It comprises the air-supplementing and enthalpy-increasing compressor according to any one of claims 1-10.

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