A gas supplementing and enthalpy increasing compressor and air conditioner

Abstract

This invention provides a gas-injection enthalpy-increasing compressor and an air conditioner. The gas-injection enthalpy-increasing compressor includes a cylinder, a partition or flange, and a valve body. The partition or flange is connected to one axial end face of the cylinder, and a gas-injection enthalpy-increasing channel is provided inside the cylinder. An injection channel is recessed on the axial end face of the cylinder connected to the partition or flange. The radially inner side of the injection channel communicates with the internal cavity of the cylinder. A valve groove is also provided at the junction of the injection channel and the valve body is at least partially disposed in the valve groove. A pressure introduction channel is also connected to the side of the valve groove away from the injection channel. One end of the pressure introduction channel communicates with the valve groove, and the other end can communicate with 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. According to this invention, the problem of poor enthalpy-increasing effect caused by unreasonable enthalpy-increasing time can be solved; it can also effectively increase the gas injection volume and meet the gas injection requirements.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, specifically to a gas-injection enthalpy-increasing compressor and an air conditioner. Background Technology

[0002] Scroll compressors have outstanding advantages such as small size and simple structure, and are widely used in household air conditioners, commercial air conditioners, and low-temperature heat pumps. By incorporating an enthalpy-increasing channel into the pump body and injecting medium-pressure gas into the compression chamber, the cooling capacity (or heating capacity) can be increased, compressor exhaust problems can be reduced, and the application range of the compressor can be further expanded.

[0003] Existing enthalpy-enhancing structures typically involve creating enthalpy-enhancing channels in specific areas of the diaphragm or flange, depending on the compressor's application. They utilize roller-sealing to address backflow issues when the compression chamber pressure exceeds the enthalpy-enhancing pressure, as described in patent CN117287395A. However, this patented structure is only suitable for specific operating conditions (selected during design). This is because when the compressor's operating conditions deviate from these specific conditions, the enthalpy-enhancing port may close prematurely or delayed, resulting in a deterioration in the enthalpy-enhancing effect.

[0004] Existing patent CN201351610Y discloses a method of creating a roller chamber on a cylinder, with a ball bearing inside. One end of the ball bearing is connected to an air supply channel, and the other end is connected to the cylinder cavity. The movement of the ball bearing opens and closes the air supply channel. However, this structure, with the ball bearing positioned in the air supply channel and the other end connected to the cylinder's air supply inlet, relies on pressure introduced through the inlet and compared with the actual air supply pressure to drive the ball bearing to open or close the channel. However, this method of introducing pressure through the inlet results in a small cross-sectional area of ​​the air supply channel due to the obstruction of the ball bearing, leading to insufficient air supply. Using a ball bearing for air supply still results in a large leakage gap between the ball bearing and the inner wall of the channel, further hindering air supply (insufficient air supply pressure or cylinder backflow, etc.). Furthermore, the ball bearing does not travel along the central axis during movement, causing it to deviate and impact the inner wall or lower end of the channel, resulting in stress concentration, significant energy consumption, reduced air supply performance, and decreased air supply reliability. The same existing technology patent CN202117924 U also has the problem of introducing pressure through the cylinder air inlet, resulting in a small air supply that does not meet the required requirements.

[0005] Because the valve body structure of the existing gas-injection enthalpy-enhancing compressor is set in the gas injection channel and pressure is introduced through the gas injection inlet of the cylinder, the gas injection volume is small and cannot meet the required requirements. Therefore, this invention studies and designs a gas-injection enthalpy-enhancing compressor and an air conditioner. Summary of the Invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the valve body structure of the existing gas-injection enthalpy-enhancing compressor is set in the gas injection channel and pressure is introduced through the gas injection inlet of the cylinder, resulting in a small gas injection volume that fails to meet the required requirements, thereby providing a gas-injection enthalpy-enhancing compressor and an air conditioner.

[0007] To address the above problems, the present invention provides a gas-injection enthalpy-increasing compressor, comprising:

[0008] The cylinder, partition or flange and valve body, wherein the partition or flange is connected to one axial end face of the cylinder and the cylinder has an air supply and enthalpy increase channel inside; the partition or flange has an injection channel recessed on the axial end face connected to the cylinder, or the cylinder has an injection channel recessed on the axial end face connected to the partition or flange.

[0009] A valve groove is also provided on the partition or flange at the position where it connects with the injection channel. The radial inner side of the injection channel communicates with the internal cavity of the cylinder. At least a part of the structure of the valve body is disposed in the valve groove. 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 communicates with the valve groove, and the other end can communicate with 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 implementations...

[0011] The pressure introduction channel introduces refrigerant from the internal cavity of the cylinder and acts on one end of the valve body. The gas injection and enthalpy enhancement channel introduces refrigerant and acts 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 gas injection and enthalpy enhancement channel, the valve body moves towards 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 gas injection and enthalpy enhancement channel, the valve body moves towards the injection channel and closes the injection channel. When the injection channel is open, the refrigerant in the gas injection and enthalpy enhancement channel can be injected into the internal cavity of the cylinder through the injection channel.

[0012] In some implementations...

[0013] The partition or flange has a pressure inlet on its axial end face facing the internal cavity of the cylinder. One end of the pressure inlet is connected to the internal cavity of the cylinder. One end of the pressure inlet channel extends to connect with the pressure inlet so as to communicate with the internal cavity and allow refrigerant in the internal cavity to be introduced into the pressure inlet channel.

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

[0015] In some implementations...

[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, such that the valve groove, the first section, the second section and the pressure inlet are sequentially connected; the gas replenishment and enthalpy enhancement channel extends along the radial direction of the cylinder, and the cylinder is also provided with an enthalpy enhancement port, which extends from one axial end face of the cylinder in a direction away from the partition or flange, extending to communicate with the gas replenishment and enthalpy enhancement channel, and the enthalpy enhancement port is connected to the injection channel.

[0017] In some implementations...

[0018] In the projection plane 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 that direction, so that a clearance fit is formed between the valve body and the valve groove.

[0019] In some implementations...

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

[0021] In some implementations...

[0022] Within the projection plane of the axial end face of the partition or flange, the area S of the pressure inlet and the displacement V of the cylinder satisfy the following condition: 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 the inner circle boundary line of the roller and the outer circle boundary line of the roller when the suction 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 satisfies the condition: LD>1mm.

[0023] In some implementations...

[0024] The gas replenishment and enthalpy-increasing compressor is a dual-cylinder compressor. The cylinder includes an upper cylinder and a lower cylinder. The partition or flange is a partition disposed between the upper cylinder and the lower cylinder. The partition is provided with a pressure inlet channel, a valve groove, and a pressure inlet. The upper cylinder is provided with an injection channel. The valve body includes a valve body and a valve body. At least a portion of the structure of the valve body is disposed in the valve groove and the injection channel. The valve body can move in the valve groove and the injection channel to open or close the injection channel.

[0025] The partition plate is also provided with a pressure inlet channel 2, a valve groove 2 and a pressure inlet port 2. The lower cylinder is provided with an injection channel 2. At least a part of the structure of the valve body 2 is provided in the valve groove 2. At least a part of the structure of the valve body 2 is provided in the injection channel 2. The valve body 2 can move in the valve groove 2 and the injection channel 2 to open or close the injection channel 2.

[0026] The gas replenishment and enthalpy enhancement channels include a gas replenishment channel one and a gas replenishment channel two. The gas replenishment channel one is located on the upper cylinder, and the gas replenishment channel two is located on the lower cylinder. The enthalpy enhancement port includes an enthalpy enhancement port one and an enthalpy enhancement port two. The enthalpy enhancement port one is located on the axial end face of the upper cylinder facing the partition in a direction away from the partition, and is connected to the gas replenishment channel one. The enthalpy enhancement port two is located on the axial end face of the lower cylinder facing the partition in a direction away from the partition, and is connected to the gas replenishment channel two.

[0027] In some implementations...

[0028] The gas replenishing and enthalpy increasing compressor is a single-cylinder compressor. The partition or flange includes an upper flange and a lower flange. The upper flange or lower flange is provided with the pressure introduction channel, pressure inlet, valve groove and injection channel. At least a part of the structure of the valve body is disposed in the valve groove and at least a part of the structure of the valve body is disposed in the injection channel. The valve body can move in the valve groove and the injection channel to open or close the injection channel.

[0029] The enthalpy-increasing port and the gas-replenishing enthalpy-increasing channel are disposed on the cylinder. The enthalpy-increasing port is opened from the axial end face of the cylinder facing the valve groove in a direction away from the valve groove, and communicates with the gas-replenishing enthalpy-increasing channel.

[0030] In some implementations...

[0031] The gas-injection and enthalpy-increasing compressor is a single-cylinder compressor. The partition or flange includes an upper flange and a lower flange. The upper flange or lower flange is provided with the pressure introduction channel, the pressure inlet, and the valve groove. The injection channel is provided on the cylinder. At least a part of the structure of the valve body is provided in the valve groove and at least a part of the structure of the valve body is provided in the injection channel. The valve body can move in the valve groove and the injection channel to open or close the injection channel.

[0032] The enthalpy-increasing port and the gas-replenishing enthalpy-increasing channel are disposed on the cylinder. The enthalpy-increasing port is opened from the axial end face of the cylinder facing the valve groove in a direction away from the valve groove, and communicates with the gas-replenishing enthalpy-increasing channel.

[0033] The present invention also provides an air conditioner comprising the aforementioned gas-injection enthalpy-increasing compressor.

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

[0035] 1. This invention provides a gas injection and enthalpy-boosting channel on a cylinder, and an injection channel or a valve groove connected to the injection channel on the end face of a partition or flange facing the cylinder. The other side of the valve groove is connected to a pressure inlet channel for introducing refrigerant from the cylinder's internal cavity. At least a portion of the valve body is housed within the valve groove, allowing one end of the valve body to withstand the refrigerant pressure introduced from the pressure inlet channel, while the other end withstands the gas injection pressure from the gas injection and enthalpy-boosting channel. This allows the valve body to open or close the injection channel based on the relationship between the gas injection pressure and the pressure within the cylinder's internal cavity. The injection channel opens when the replenishment pressure is greater than the internal cavity pressure and closes when the replenishment pressure is less than the internal cavity pressure of the cylinder. This achieves automatic control of whether to replenish air based on the relationship between the replenishment air and the cylinder pressure, improving the timeliness of the check valve opening or closing. It can adaptively adjust the replenishment air time according to the working conditions, solving the problem of poor enthalpy increase effect caused by unreasonable enthalpy increase time. Furthermore, the invention, through the setting of the pressure introduction channel, compared with the existing technology of introducing refrigerant pressure through the cylinder replenishment air inlet, can fully open the injection channel without obstructing it, effectively increasing the replenishment air volume and meeting the required replenishment air requirements.

[0036] 2. Because the present invention incorporates a pressure introduction channel, it eliminates the need for a large cross-sectional area of ​​the valve groove, allowing for a smaller flow area. It only requires ensuring the valve body can move within the groove, effectively preventing the valve body from tilting and deviating from the central axis during movement. This ensures the valve body always moves vertically along the central axis, preventing it from impacting the inner wall of the valve groove. Furthermore, it increases the contact area between the valve body and the baffle (forming surface contact, avoiding point contact caused by tilting), reducing stress concentration and thus reducing wear on the baffle, energy consumption, and operational reliability. In addition to serving as the pressure introduction channel for the compression chamber on the back of the valve body, the pressure introduction channel can also function as a resonant chamber for the compressor, effectively reducing compressor airflow noise.

[0037] 3. The present invention further comprises a pressure inlet provided on the axial end face of the partition or flange facing the internal cavity of the cylinder. One end of the pressure inlet is connected to the internal cavity of the cylinder, and one end of the pressure inlet channel extends to connect with the pressure inlet. When the roller rotates to the point where the intake port of the cylinder is connected to the injection channel, the pressure inlet can introduce gas with a pressure greater than the replenishment pressure from the internal cavity into the pressure inlet channel. Simultaneously, the pressure inlet is sealed by the roller. This allows gas to be introduced into the injection channel through pressure when the roller rotates to connect the intake port and the injection channel. The special design of the pressure inlet allows gas with an inlet pressure greater than the replenishment pressure to enter the pressure inlet channel. Simultaneously, the pressure inlet is sealed by rollers. This pressure difference (the pressure in the pressure inlet channel is greater than the pressure in the replenishment channel) causes the valve body to be pressed against the outlet of the replenishment enthalpy-increasing channel, preventing the injection channel from connecting with it. This prevents gas from being replenished to the cylinder cavity through the injection channel, effectively avoiding the situation where the injection channel connects with the intake port and affects the compressor's normal intake, thus ensuring the enthalpy-increasing effect and not affecting normal enthalpy-increasing operation. Attached Figure Description

[0038] Figure 1 This is a cross-sectional view of the pump body structure of the gas-injection and enthalpy-increasing compressor according to Embodiment 1 of the present invention (single cylinder, injection channel located at the lower flange);

[0039] Figure 2a yes Figure 1 Top view of the lower flange in the middle;

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

[0041] Figure 2c yes Figure 1 A 3D view of the cylinder in the image;

[0042] Figure 3This is a cross-sectional view of the pump body structure of the gas-injection and enthalpy-increasing compressor according to Embodiment 2 of the present invention (single cylinder, with the injection channel located in the cylinder);

[0043] Figure 4a yes Figure 3 Top view of the lower flange in the middle;

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

[0045] Figure 4c yes Figure 3 A 3D view of the cylinder in the image;

[0046] Figure 5 This is a cross-sectional view (dual cylinder) of the pump body structure of the gas-injection and enthalpy-increasing compressor according to Embodiment 3 of the present invention;

[0047] Figure 6a yes Figure 5 A 3D view of the upper cylinder;

[0048] Figure 6b yes Figure 5 A 3D view of the lower cylinder;

[0049] Figure 7a yes Figure 5 A three-dimensional view of the first side of the partition in the middle;

[0050] Figure 7b yes Figure 5 A three-dimensional view of the second side of the partition in the middle;

[0051] Figure 8 These are diagrams illustrating the valve opening state and the connection between the injection channel and the intake port when the rollers of the compressor, as shown in Embodiments 1 to 3 of the present invention, reach different positions within the cylinder.

[0052] Figure 9 This is a diagram showing the installation area of ​​the pressure inlet of the compressor as shown in Embodiments 1 to 3 of the present invention;

[0053] Figure 10 This 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 in the attached figures are as follows:

[0055] 1. Cylinder; 11. Upper Cylinder; 12. Lower Cylinder; 2. Baffle or Flange; 21. Upper Flange; 22. Lower Flange; 3. Valve Body; 31. Valve Body 1; 32. Valve Body 2; 4. Injection Channel; 41. Injection Channel 1; 42. Injection Channel 2; 5. Injection Channel; 51. Injection Channel 1; 52. Injection Channel 2; 6. Valve Groove; 61. Valve Groove 1; 62. Valve Groove 2; 7. Pressure Inlet Channel; 71. Pressure Inlet Channel 1; 72. Pressure Inlet Channel 2; 8. Enthalpy Increasing Port; 81. Enthalpy Increasing Port 1; 82. Enthalpy Increasing Port 2; 9. Pressure Inlet 91. Pressure inlet 1; 92. Pressure inlet 2; 10. Side extension line of the vane groove; 13. Inner circle boundary line of the roller; 14. Outer circle boundary line of the roller when the 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 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. Intake chamber; 26. Compression chamber; 27. Eccentric direction of the crankshaft; 28. Radial connecting line. Detailed Implementation

[0056] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0059] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

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

[0061] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0062] like Figure 1-10As shown, the present invention provides a gas-injection enthalpy-increasing compressor (preferably a rolling rotor type enthalpy-increasing compressor), comprising:

[0063] The cylinder 1, partition or flange 2, and valve body 3 are provided. The partition or flange 2 is connected to one axial end face of the cylinder 1, and the cylinder 1 has an internal air supply and enthalpy increase channel 4. The axial end face of the partition or flange 2 connected to the cylinder 1 has a recessed injection channel 5 (see [reference]). Figure 1-2c Alternatively, the cylinder 1 may have a recessed injection channel 5 on the axial end face that connects to the partition or flange 2 (see...). Figure 3-4c );

[0064] A valve groove 6 is also provided on the partition or flange 2 at the position where it connects with the injection channel 5. The radial inner side of the injection channel 5 communicates with the internal cavity of the cylinder 1. At least a part of the structure of the valve body 3 is disposed 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 communicates with the valve groove 6 and the other end can communicate with 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] This invention provides an enthalpy-boosting gas replenishment channel on the cylinder, and an injection channel on the cylinder-facing end face of a partition or flange, or vice versa. A valve groove is formed on the partition or flange connected to the injection channel, and a pressure inlet channel connects to the other side of the valve groove to introduce refrigerant from the cylinder's internal cavity. At least a portion of the valve body is housed within the valve groove, allowing one end of the valve body to withstand the refrigerant pressure introduced from the cylinder via the pressure inlet channel, and the other end to withstand the replenishment gas pressure from the enthalpy-boosting gas replenishment channel. This allows the valve body to open or close the injection channel based on the relationship between the replenishment gas pressure and the internal cylinder pressure. The injection channel opens when the replenishment gas pressure is greater than the internal cavity pressure and closes when the replenishment gas pressure is less than the internal cylinder pressure. This achieves automatic control of gas replenishment based on the relationship between the replenishment gas pressure and the cylinder pressure, improving the timeliness of the check valve's opening and closing. It also allows for adaptive adjustment of the replenishment time according to the operating conditions, solving the problem of unreasonable enthalpy-boosting time leading to... This invention addresses the problem of poor enthalpy enhancement. Furthermore, by using a pressure-introducing channel, compared to existing technologies that introduce refrigerant pressure through a cylinder inlet, the injection channel can be fully opened without obstruction, effectively increasing the injection volume and meeting the required injection requirements. Because of the pressure-introducing channel, the cross-sectional area of ​​the valve groove does not need to be large; the flow area can be reduced, ensuring only that the valve body can move. This effectively prevents the valve body from tilting and deviating from the central axis during movement, ensuring it always moves along the central axis, preventing it from impacting the inner wall of the valve groove, and increasing the contact area between the valve body and the baffle (forming surface contact, avoiding point contact caused by tilting), reducing stress concentration, thus reducing wear on the baffle, reducing energy consumption, and improving operational reliability. In addition to serving as the pressure introduction channel for the compression chamber on the back of the valve body, the pressure-introducing channel can also serve as the compressor's resonant chamber, effectively reducing compressor airflow noise.

[0066] In some implementations...

[0067] The pressure introduction channel 7 can introduce refrigerant from the internal cavity of the cylinder 1 and act on one end of the valve body 3. The gas injection and enthalpy enhancement channel 4 can introduce refrigerant and act on the other end of the valve body 3. When the pressure of the refrigerant introduced by the pressure introduction channel 7 is less than the pressure of the refrigerant in the gas injection and enthalpy enhancement channel 4, the valve body 3 moves towards the pressure introduction channel 7 and opens the injection channel 5. When the pressure of the refrigerant introduced by the pressure introduction channel 7 is greater than the pressure of the refrigerant in the gas injection and enthalpy enhancement channel 4, the valve body 3 moves towards the injection channel 5 and closes the injection channel 5. When the injection channel 5 is opened, the refrigerant in the gas injection and enthalpy enhancement channel 4 can be injected 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. Based on the relationship between the compression pressure and the replenishment pressure, the valve body is automatically controlled to open the injection channel to replenish gas, or close the injection channel to prevent gas replenishment. The specific timing of gas replenishment is adaptively adjusted according to the working conditions, which solves the problem of poor enthalpy increase effect caused by unreasonable enthalpy increase time.

[0069] The present invention includes a compression chamber pressure inlet channel (pressure inlet channel 7): one side of this channel is connected to the cylinder pressure inlet port, and the other side extends to the valve side away from the enthalpy-increasing port. This side of the channel is blocked by the valve; regardless of the valve's position, this channel only provides pressure inlet to the compression chamber and does not serve as an injection channel for medium-pressure refrigerant. Furthermore, this channel has a certain clearance volume, which can act as a resonant cavity for the compression chamber, thus reducing refrigerant noise.

[0070] In some implementations...

[0071] The partition or flange 2 has a pressure inlet 9 on its axial end face 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. One end of the pressure inlet channel 7 extends to connect with the pressure inlet 9 so as to communicate with the internal cavity and introduce refrigerant from the internal cavity into the pressure inlet channel 7.

[0072] It also includes a roller 15, which is disposed in the internal cavity of the cylinder 1. Before the roller 15 rotates to the point where the air intake of the cylinder 1 is connected to the injection channel 5, the pressure inlet 9 can introduce gas with a pressure greater than the replenishment pressure from the internal cavity into the pressure inlet channel 7. When the roller 15 rotates to the point where the air intake of the cylinder 1 is connected to 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 includes a pressure inlet on the axial end face of the partition or flange facing the internal cavity of the cylinder. One end of the pressure inlet communicates with the internal cavity of the cylinder, and one end of the pressure inlet channel extends to connect with the pressure inlet. Before the roller 15 rotates to the point where the intake port of the cylinder 1 communicates with the injection channel 5, the pressure inlet can introduce gas with a pressure greater than the replenishment pressure from the internal cavity into the pressure inlet channel (e.g., as shown in the image). Figure 8 In state 1), when the roller rotates to the point where the air intake of the cylinder is connected to the injection channel, the pressure inlet is closed by the roller (e.g., as shown in the image). Figure 8 In state 4), before the roller rotates and connects the intake port and the injection channel, a special setting of the pressure inlet allows gas with a pressure greater than the replenishment pressure to enter the pressure inlet channel. When the roller rotates and connects the intake port and the injection channel, the pressure inlet is closed by the roller. As a result, due to the pressure difference between the two ends (the pressure in the pressure inlet channel is greater than the pressure in the replenishment channel), the valve body is pressed against the outlet of the replenishment enthalpy channel, so that the injection channel and the replenishment enthalpy channel are not connected. At this time, the cylinder cavity is not replenished through the injection channel, thus effectively avoiding the situation where the injection channel is connected to the intake port and affects the normal intake of the compressor, ensuring the enthalpy increase effect and not affecting the normal enthalpy increase operation.

[0074] This invention provides an enthalpy-increasing channel and an enthalpy-increasing port on the cylinder, located away from the intake port and near the vane groove. On the lower flange adjacent to the cylinder's enthalpy-increasing port, at positions axially corresponding to the port, are respectively provided a valve groove, an injection channel, a pressure introduction channel, and a pressure inlet. The valve groove houses an axially movable valve, serving to cover the cylinder's enthalpy-increasing port and both connect and disconnect the enthalpy-increasing flow from the injection channel. The pressure inlet is located within the pressure inlet area, and the pressure introduction channel connects the valve groove on the lower flange to the pressure inlet.

[0075] In some implementations...

[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, such that the valve groove 6, the first section, the second section and the pressure inlet 9 are connected in sequence; the gas replenishment and enthalpy enhancement channel 4 extends along the radial direction of the cylinder 1, and the cylinder 1 is also provided with an enthalpy enhancement port 8, which extends from one 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 communicate with the gas replenishment and enthalpy enhancement channel 4, and the enthalpy enhancement port 8 is connected to the injection channel 5.

[0077] This is the preferred structural form of the pressure introduction channel, the gas replenishment and enthalpy enhancement channel, and the enthalpy enhancement port of the present invention. Specifically, the pressure introduction channel preferably extends along the axial and radial directions of the partition or flange. Figure 1 As shown, the air supply channel preferably extends vertically and horizontally, and preferably extends radially. Figure 1 As shown, it extends horizontally. Through the setting of the enthalpy-increasing port, the refrigerant in the refrigerant channel can be guided to the end face of the valve body through the enthalpy-increasing port. Thus, the valve body can be moved to open the injection channel according to the magnitude of the refrigerant pressure, realizing the function of automatic refrigerant replenishment and automatic refrigerant shut-off based on the relationship between the refrigerant pressure and the compression pressure.

[0078] In some implementations...

[0079] In the projection plane 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 less than the width of the valve groove 6, the width of the valve groove 6 is less 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 less than the width of the valve groove 6 in that direction, so that a clearance fit is formed between the valve body 3 and the valve groove 6.

[0080] In this invention, the width of the pressure introduction channel is preferably smaller than the width of the valve groove. The pressure introduction channel only needs to introduce the pressure in the compression chamber, without the need for a large channel area, thus avoiding any impact on 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. Reducing the width of the valve groove can effectively limit the valve body, preventing the valve body from shifting or tilting during movement, thereby avoiding the valve body from impacting the baffle or the inner wall of the valve groove, which would cause stress concentration, reduce the wear of the baffle, etc., and improve operational reliability. The injection channel is wider to ensure that there is a sufficient flow of refrigerant to replenish the compression chamber and increase enthalpy, thereby improving the enthalpy increase performance.

[0081] In some implementations...

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

[0083] The pressure inlet area of ​​this invention is defined by the above boundaries. Figure 9This effectively ensures that when the roller 15 rotates to the point where the air intake of the cylinder 1 is connected to the injection channel 5, the pressure inlet 9 can introduce gas with a pressure greater than the replenishment pressure from the internal cavity into the pressure inlet channel 7. At the same time, the pressure inlet 9 is sealed by the roller 15, ensuring that the replenishment channel will not open and leak gas to the air intake, thus preventing gas leakage.

[0084] The principle of this invention in suppressing the occurrence of enthalpy-increasing gas leakage zone (e.g.) Figure 8 In state 1, once the pressure in the compression chamber exceeds the intermediate pressure (higher than the intake pressure, lower than the exhaust pressure), the pressure inlet channel introduces the pressure from the compression chamber to the back of the valve, pushing the valve to move axially, contacting the cylinder and blocking the enthalpy-increasing port. The injection channel is then isolated from the enthalpy-increasing port and channel, and the compressor stops increasing enthalpy. When the roller reaches state 2, the pressure inlet is blocked by the roller, and high-pressure refrigerant is sealed in the pressure inlet channel. The valve remains in a state of isolation between the injection channel and the enthalpy-increasing port. When the roller reaches state 3, the pressure inlet remains blocked by the roller, and the injection channel is about to connect with the cylinder intake. The valve remains in a state of isolation between the injection channel and the enthalpy-increasing port. When the roller reaches state 4, the injection channel connects with the cylinder intake port, but the refrigerant in the pressure inlet channel has not yet been released, and its pressure has not yet decreased. The valve remains in a state of isolation between the injection channel and the enthalpy-increasing port, and the refrigerant in the enthalpy-increasing channel cannot be injected into the cylinder, affecting the compressor's normal intake. When the roller reaches state 5, the cylinder intake port is about to close, and the pressure inlet is about to be opened by the roller. However, the pressure in the pressure inlet channel has not yet decreased, and the enthalpy-increasing port cannot connect with the injection channel. When the roller reaches state 6, the intake port closes, the pressure inlet opens, the pressure in the pressure inlet channel decreases, the valve opens, and the enthalpy-increasing port connects with the injection channel. The medium-pressure refrigerant is injected into the compression chamber from the enthalpy-increasing channel, the enthalpy-increasing port, and the injection channel. As can be seen from the above operation process, according to the settings of this invention, the enthalpy-increasing gas leakage zone is suppressed. Throughout the entire operating cycle of the roller, the enthalpy-increasing port cannot connect with the intake port, and it has no impact on the normal enthalpy-increasing operation of the compressor.

[0085] More preferably, by replacing the boundary line 14 of the roller's outer circle when the intake port is just closed with the roller's outer circle inward contraction line 19, which forms when the intake port is just closed, the pressure inlet area 20 can be further reduced, further ensuring that there is no air leakage. The slide moves back and forth along the extension line of the slide groove side. The right side of the extension line 10 of the slide groove side (near the exhaust side) can introduce compression chamber pressure. The roller is eccentrically set in the cylinder and moves in a circular motion. The maximum boundary of its inner circle naturally forms the inner circle boundary line of the roller as it runs one revolution around the cylinder. The compression chamber pressure cannot be received inside this boundary line, but can be received outside this boundary line. Roller outer circle when intake port is just closed: No intake pressure is received inside this outer circle, but intake pressure can be received outside this outer circle. The inward contraction line of the outer circle of the roller when the air intake is just closed: The area between this contraction line and the outer circle of the roller when the air intake is just closed is the critical area. Setting a pressure inlet in this critical area can make the pressure inlet open just as the air intake is closed.

[0086] In some implementations...

[0087] Within 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: 0.05‰mm^(-1)≤S / V≤1‰mm^(-1). To ensure the timely 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 prevent the pressure inlet from entering the inner circle boundary line of the roller and to prevent the high pressure of the inner circle of the roller from communicating with the pressure inlet, a radial connecting line 28 is drawn between the center of the cylinder 1 and the center of the pressure inlet 9. The radial connecting line 28 intersects the inner circle boundary line 13 of the roller and the outer circle boundary line 14 of the roller when the suction 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] To reduce the delay in valve closure (the length of valve closing time), the area of ​​the pressure inlet needs to be limited. A smaller pressure inlet area leads to a delayed valve closure, causing refrigerant in the compression chamber to flow back into the enthalpy-increasing channel, increasing the amount of refrigerant. A larger pressure inlet area increases the compressor clearance volume, which also affects compressor performance. Therefore, the area S of the pressure inlet needs to be limited. Experimental verification shows that compressor performance first increases and then decreases with the increase of the enthalpy-increasing inlet area. The optimal pressure inlet area S and the corresponding cylinder displacement V should satisfy: 0.05‰mm(^-1)≤S / V≤1‰mm(^-1), which can improve the enthalpy-increasing performance of the compressor. To ensure timely 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 prevent the pressure inlet from entering the inner circle boundary line of the roller, the radial distance L between the inner circle boundary line 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 air leakage occurs.

[0089] In some implementations...

[0090] The gas replenishment and enthalpy-increasing compressor is a dual-cylinder compressor. The cylinder 1 includes an upper cylinder 11 and a lower cylinder 12. The partition or flange 2 is a partition (or flange, i.e., the gas replenishment channel and the enthalpy-increasing port can start on the partition or be opened on the flange) disposed between the upper cylinder 11 and the lower cylinder 12. The partition is provided with a pressure inlet channel 71, a valve groove 61 and a pressure inlet 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 a part of the structure of the valve body 31 is disposed in the valve groove 61 and at least a part of the structure of the valve body 31 is disposed in the injection channel 51. 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 pressure inlet channel 72, a valve groove 62 and a pressure inlet port 92. The lower cylinder 12 is provided with an injection channel 52. At least a portion of the structure of the valve body 32 is disposed in the valve groove 62 and the injection channel 52. The valve body 32 can move in the valve groove 62 and the injection channel 52 to open or close the injection channel 52.

[0092] The gas replenishment and enthalpy enhancement channel 4 includes a first gas replenishment channel 41 and a second gas replenishment channel 42. The first gas replenishment channel 41 is opened on the upper cylinder 11, and the second gas replenishment channel 42 is opened on the lower cylinder 12. The enthalpy enhancement port 8 includes a first enthalpy enhancement port 81 and a second enthalpy enhancement port 82. The first enthalpy enhancement port 81 is opened from the axial end face of the upper cylinder 11 facing the partition in a direction away from the partition, and communicates with the first gas replenishment channel 41. The second enthalpy enhancement port 82 is opened from the axial end face of the lower cylinder 12 facing the partition in a direction away from the partition, and communicates with the second gas replenishment channel 42.

[0093] This is a further preferred structural form of the gas-injection enthalpy-increasing compressor of the present invention, namely a dual-cylinder structure with upper and lower cylinders. Through the connection between the upper end of the gas-injection enthalpy-increasing channel and the injection channel one, valve body one, etc., and the connection between the lower end of the gas-injection enthalpy-increasing channel and the injection channel two, etc., the effect of enthalpy-increasing gas injection for the upper and lower cylinders can be achieved separately. Moreover, both cylinders can achieve automatic gas injection based on the relationship between their respective compression chamber pressure and gas injection pressure. The gas injection time can be adaptively adjusted according to the working conditions, solving the problem of poor enthalpy-increasing effect caused by unreasonable enthalpy-increasing time. Furthermore, it can increase the gas injection volume for both cylinders, reduce stress concentration, and reduce noise.

[0094] like Figure 1-2c In some implementation methods,

[0095] The gas replenishment and enthalpy-increasing compressor is a single-cylinder compressor. The partition or flange 2 includes an upper flange 21 and a lower flange 22. The upper flange 21 or lower flange 22 is provided with the pressure introduction channel 7, the pressure inlet 9, the valve groove 6, and the injection channel 5. At least a part of the structure of the valve body 3 is disposed in the valve groove 6 and at least a part of the structure of the valve body 3 is disposed in the injection channel 5. The valve body 3 can move in the valve groove 6 and the injection channel 5 to open or close the injection channel 5.

[0096] The enthalpy-increasing port 8 and the gas replenishment enthalpy-increasing channel 4 are disposed on the cylinder 1. 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, and communicates with the gas replenishment enthalpy-increasing channel 4.

[0097] This is a further preferred structural form of the first embodiment of the gas-injection enthalpy-increasing compressor of the present invention, namely a single-cylinder structure. Through the connection between the gas-injection enthalpy-increasing channel and the injection channel, valve body, etc., the effect of enthalpy-increasing gas injection for a single cylinder can be achieved. Moreover, it can realize the function of automatic gas injection based on the relationship between the single compression chamber pressure and the gas injection pressure. It can adaptively adjust the gas injection time according to the working conditions, solving the problem of poor enthalpy-increasing effect caused by unreasonable enthalpy-increasing time. Furthermore, it can increase the gas injection volume for a single cylinder, reduce stress concentration, and reduce noise.

[0098] like Figure 3-4c In some implementation methods,

[0099] The gas-injection and enthalpy-increasing compressor is a single-cylinder compressor. The partition or flange 2 includes an upper flange 21 and a lower flange 22. The upper flange 21 or lower flange 22 is provided with the pressure introduction channel 7, the pressure inlet 9, and the valve groove 6. The injection channel 5 is provided on the cylinder 1. At least a part of the structure of the valve body 3 is provided in the valve groove 6 and at least a part of the structure of the valve body 3 is provided in the injection channel 5. The valve body 3 can move in the valve groove 6 and the injection channel 5 to open or close the injection channel 5.

[0100] The enthalpy-increasing port 8 and the gas replenishment enthalpy-increasing channel 4 are disposed on the cylinder 1. 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, and communicates with the gas replenishment enthalpy-increasing channel 4.

[0101] This is a further preferred structural form of the second embodiment of the gas-injection enthalpy-increasing compressor of the present invention, namely a single-cylinder structure. Through the connection between the gas-injection enthalpy-increasing channel and the injection channel, valve body, etc., the effect of enthalpy-increasing gas injection for a single cylinder can be achieved. Moreover, it can realize the function of automatic gas injection based on the relationship between the pressure of the single compression chamber and the gas injection pressure. It can adaptively adjust the gas injection time according to the working conditions, solving the problem of poor enthalpy-increasing effect caused by unreasonable enthalpy-increasing time. Furthermore, it can increase the gas injection volume of a single cylinder, reduce stress concentration, and reduce noise.

[0102] The present invention relates to a compressor structure: A rolling rotor compressor includes a distributor, a housing, a motor, and a pump assembly. The distributor is located outside the housing and is used to supply low-pressure refrigerant to the pump assembly. The housing encloses the motor and pump assembly, forming an airtight barrier against the external environment. The motor is interference-fitted to the upper part of the housing, and the pump assembly is located below the motor and connected to the housing via welded joints. The pump assembly includes an upper flange cylinder, a lower flange, a crankshaft, rollers, and vanes or partitions.

[0103] Upper and lower flanges are located at both ends of the pump body assembly. Rollers and vanes are respectively installed inside the cylinder. The crankshaft is fitted into the shaft holes of the upper and lower flanges, with the portion passing through the upper flange connecting to the motor rotor assembly. Rollers are fitted onto the eccentric portion of the crankshaft, and vanes are positioned in the cylinder vane slots, enabling linear reciprocating motion. One end of the vane abuts against the roller, dividing the space within the cylinder into an intake chamber and a compression chamber. When the motor rotates, it drives the crankshaft to rotate, compressing the refrigerant drawn into the cylinder before it is discharged into the housing.

[0104] The enthalpy-increasing structure of this invention comprises one or more valve slots on the pump body. The first side of the valve slot is connected to the cylinder pressure inlet via a compression chamber pressure inlet channel, and the second side of the valve slot is connected to the compression chamber via an injection channel. The valve is confined to move between the cylinder valve slot and its adjacent partition (for a single-cylinder compressor, the component adjacent to the valve slot is the lower flange). The enthalpy-increasing component is located outside the housing, and its lower bend passes through the housing, sequentially connecting to the enthalpy-increasing channel, enthalpy-increasing port, and injection channel on the pump body. The valve size φd is designed to be larger than the enthalpy-increasing port but smaller than the valve slot size φD, ensuring free movement of the valve within the valve chamber while simultaneously covering the enthalpy-increasing port, thus achieving valve closure of the enthalpy-increasing port.

[0105] Enthalpy enhancement process: Medium-pressure refrigerant is introduced into the enthalpy enhancement component from the system. This medium pressure is higher than the intake pressure but lower than the exhaust pressure. When the pressure in the compression chamber is lower than the medium pressure, the pressure on the side of the valve near the enthalpy enhancement port is greater than the pressure on the side away from the enthalpy enhancement port. The valve moves away from the enthalpy enhancement port, opening the enthalpy enhancement port. The medium-pressure refrigerant then passes sequentially through the enthalpy enhancement component, the enthalpy enhancement channel, the enthalpy enhancement port, and the injection channel into the compression chamber. When the pressure in the compression chamber is higher than the medium pressure, the pressure on the side of the valve near the enthalpy enhancement port is less than the pressure on the side away from the enthalpy enhancement port. The valve moves towards the enthalpy enhancement port, closing the enthalpy enhancement port to prevent the refrigerant in the compression chamber from flowing out.

[0106] The present invention also provides an air conditioner comprising the aforementioned gas-injection enthalpy-increasing compressor.

[0107] The present invention provides a check valve on the compressor, which can significantly improve the compressor's enthalpy increase effect and enhance the compressor's cooling and heating capacity. However, during the operation of the compressor, there is a certain range called the "enthalpy increase gas leakage zone": the injection channel is connected to the cylinder intake port. This not only fails to increase the compressor's enthalpy increase, but also affects the compressor's normal intake and inhibits further improvement of the compressor's enthalpy increase effect.

[0108] This invention includes a valve, an enthalpy-increasing channel, an injection channel, a pressure introduction channel, and a pressure inlet on the compressor. The pressure inlet is positioned at a specific location within the compression chamber, ensuring that the check valve remains closed when the compressor operates in the enthalpy-increasing gas leakage zone, and immediately opens after the suction cycle is complete, without affecting normal enthalpy-increasing operation.

[0109] Beneficial effects:

[0110] By configuring the above-mentioned structure of this invention, the occurrence of enthalpy-increasing gas leakage zone is suppressed, further improving the enthalpy-increasing effect of the compressor. This invention can also be used in compressors with three or more cylinders.

[0111] The above description is merely 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 principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A charge boosting enthalpy increasing compressor characterized by: include: The cylinder (1), the partition or flange (2) and the valve body (3) are connected to the axial side end face of the cylinder (1), and the cylinder (1) is provided with a gas replenishment and enthalpy increase channel (4); the axial side end face of the partition or flange (2) connected to the cylinder (1) is provided with a recessed injection channel (5), or the axial side end face of the cylinder (1) connected to the partition or flange (2) is provided with a recessed injection channel (5). A valve groove (6) is also provided on the partition or flange (2) at the position where it connects with 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 a part of the structure of the valve body (3) is provided 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 is 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). The partition or flange (2) is provided with a pressure inlet (9) on the axial end face of the internal cavity of the cylinder (1). One end of the pressure inlet (9) is connected to the internal cavity of the cylinder (1). One end of the pressure inlet 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 inlet channel (7). It also includes a roller (15), which is disposed in the internal cavity of the cylinder (1). Before the roller (15) rotates to the point where the air intake of the cylinder (1) is connected to the injection channel (5), the pressure inlet (9) can introduce gas with a pressure greater than the replenishment pressure from the internal cavity into the pressure inlet channel (7). When the roller (15) rotates to the point where the air intake of the cylinder (1) is connected to the injection channel (5), the pressure inlet (9) is closed by the roller (15). Within the projection plane of the axial end face of the cylinder (1), the area where the pressure inlet (9) is located is defined by the following boundaries: the side extension line (10) of the slide groove, the inner circle boundary line (13) of the roller, and the outer circle boundary line (14) of the roller when the air intake is just closed by the roller. Within 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: 0.05‰mm^(-1)≤S / V≤1‰mm^(-1). The 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 the inner circle boundary line (13) of the roller and the outer circle boundary line (14) of the roller when the suction 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 satisfies: LD>1mm.

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

3. The gas-injection enthalpy-increasing compressor according to claim 1, characterized in that: 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), such that the valve groove (6), the first section, the second section and the pressure inlet (9) are connected in sequence; the gas replenishment and enthalpy enhancement channel (4) extends along the radial direction of the cylinder (1), and the cylinder (1) is also provided with an enthalpy enhancement port (8), which extends from one axial end face of the cylinder (1) in a direction away from the partition or flange (2) and extends to communicate with the gas replenishment and enthalpy enhancement channel (4), and the enthalpy enhancement port (8) is connected to the injection channel (5).

4. The gas-injection enthalpy-increasing compressor according to claim 3, characterized in that: In the projection plane 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 less than the width of the valve groove (6), the width of the valve groove (6) is less 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 less than the width of the valve groove (6) in that direction, so that a clearance fit is formed between the valve body (3) and the valve groove (6).

5. The gas-injection enthalpy-increasing compressor according to claim 3, characterized in that: The gas replenishing and enthalpy increasing compressor is a dual-cylinder compressor. The cylinder (1) includes an upper cylinder (11) and a lower cylinder (12). The partition or flange (2) is a partition between the upper cylinder (11) and the lower cylinder (12). The partition is provided with a pressure inlet channel (71), a valve groove (61), and a pressure inlet 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 a portion of the structure of the valve body (31) is located in the valve groove (61). At least a portion of the structure of the valve body (31) is located in the injection channel (51). 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 is also provided with a pressure inlet channel 2 (72), a valve groove 2 (62) and a pressure inlet port 2 (92). The lower cylinder (12) is provided with an injection channel 2 (52). At least a part of the structure of the valve body 2 (32) is provided in the valve groove 2 (62). At least a part of the structure of the valve body 2 (32) is provided in the injection channel 2 (52). The valve body 2 (32) can move in the valve groove 2 (62) and the injection channel 2 (52) to open or close the injection channel 2 (52). The gas replenishment and enthalpy enhancement channel (4) includes a gas replenishment channel one (41) and a gas replenishment channel two (42). The gas replenishment channel one (41) is opened on the upper cylinder (11), and the gas replenishment channel two (42) is opened on the lower cylinder (12). The enthalpy enhancement port (8) includes an enthalpy enhancement port one (81) and an enthalpy enhancement port two (82). The enthalpy enhancement port one (81) is opened from the axial end face of the upper cylinder (11) facing the partition in a direction away from the partition, and communicates with the gas replenishment channel one (41). The enthalpy enhancement port two (82) is opened from the axial end face of the lower cylinder (12) facing the partition in a direction away from the partition, and communicates with the gas replenishment channel two (42).

6. The gas-injection enthalpy-increasing compressor according to claim 3, characterized in that: The gas replenishing and enthalpy increasing compressor is a single-cylinder compressor. The partition or flange (2) includes an upper flange (21) and a lower flange (22). The upper flange (21) or lower flange (22) is provided with the pressure introduction channel (7), pressure inlet (9), valve groove (6) and injection channel (5). At least a part of the structure of the valve body (3) is disposed in the valve groove (6) and at least a part of the structure of the valve body (3) is disposed in the injection channel (5). 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 gas replenishment enthalpy-increasing channel (4) are disposed on the cylinder (1). 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) and communicates with the gas replenishment enthalpy-increasing channel (4).

7. The gas-injection enthalpy-increasing compressor according to claim 3, characterized in that: The gas replenishing and enthalpy increasing compressor is a single-cylinder compressor. The partition or flange (2) includes an upper flange (21) and a lower flange (22). The upper flange (21) or lower flange (22) is provided with the pressure introduction channel (7), the pressure inlet (9) and the valve groove (6). The injection channel (5) is provided on the cylinder (1). At least a part of the structure of the valve body (3) is provided in the valve groove (6). At least a part of the structure of the valve body (3) is provided in the injection channel (5). 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 gas replenishment enthalpy-increasing channel (4) are disposed on the cylinder (1). 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) and communicates with the gas replenishment enthalpy-increasing channel (4).

8. An air conditioner, characterized in that: The compressor includes the gas-injection enthalpy-increasing compressor as described in any one of claims 1-7.

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