Air supplementing and enthalpy increasing assembly, pump body assembly, compressor and refrigeration equipment

Abstract

The invention provides an air supplementing and enthalpy increasing assembly, a pump body assembly, a compressor and refrigeration equipment, the air supplementing and enthalpy increasing assembly comprises a base, a first sliding block, a second sliding block, a first elastic reset piece and a second elastic reset piece, a first sliding groove and a second sliding groove are formed in the base, and a first compression cavity communicating port and a first air supplementing communicating port are formed in the groove wall of the first sliding groove; a second compression cavity communication port and a second air supply communication port are formed in the wall of the second sliding groove, in the first state, the first sliding block is located at the first disconnection position, the first compression cavity communication port and the first air supply communication port are not communicated, the second sliding block is located at the second communication position, and the second compression cavity communication port and the second air supply communication port are communicated; and in the second state, the first sliding block is located at the first communicating position, the first compression cavity communicating opening communicates with the first air supply communicating opening, the second sliding block is located at the second disconnecting position, and the second compression cavity communicating opening does not communicate with the second air supply communicating opening. The air supply enthalpy increasing assembly can control the low-pressure cavity to be connected with the air supply channel, so that injection air supply to the compression cavity with small pressure is achieved, and air backflow can be effectively prevented.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to an air replenishing and enthalpy increasing component, a pump body component, a compressor and a refrigeration device. Background Art

[0002] At present, rolling rotor compressors have some problems under low temperature conditions: first, the compressor pressure ratio increases, the leakage increases, the volumetric efficiency decreases, and the exhaust temperature increases, resulting in a decrease in COP and reduced compressor reliability; second, the suction volume decreases and the circulation flow is insufficient, resulting in a decrease in air conditioning heating capacity. Generally, the system performance is improved by the method of intermediate air replenishment. There are two ways of intermediate air replenishment. One is two-stage compression intermediate air replenishment, that is, air replenishment on the intermediate connecting pipe between two series compressors. The other way of air replenishment is to replenish air during the compression process of the compressor. At this time, the compressor has its own injection port, which is called a quasi-two-stage compression form. The rolling rotor compressor with quasi-two-stage compression can effectively solve the problems of excessively high exhaust temperature and insufficient heating capacity of the compressor under low temperature conditions, and has good economy.

[0003] At present, there are two common injection air supply structures for quasi-two-stage rotor compressors: one is to design a variable volume channel on the partition or on the lower flange to connect the internal cavity of the pump body, and control the opening and closing of the variable volume through the motion trajectory of the roller, so as to realize the automatic opening and closing of the air supply port at the appropriate position. This structure uses the roller motion trajectory to open and close, and the air supply volume is very limited, and the air supply effect varies greatly under different working conditions. This structure is limited by the working conditions, resulting in a limited application range of the compressor. The other is to use a valve plate baffle structure on the cylinder to control the air supply. This structure can achieve the effective maximum air supply volume under any working condition, but because the valve plate baffle structure is in the compression chamber, the volumetric efficiency of the compressor is very low. In addition, the air supply port is opened on the cylinder wall near the exhaust port, which can ensure that the air supply time is as long as possible, but opening the injection port on the cylinder wall will inevitably have a period of time when the air supply port and the air intake port are connected. During this period of time, the medium-pressure gas ejected from the air supply port will be ejected into the air intake chamber and then flow back to the air intake pipe, so it needs to be improved. Summary of the invention

[0004] The first object of the present invention is to provide an air-increasing and enthalpy-increasing component, which can control the connection between the low-pressure chamber and the air-increasing channel, thereby realizing the injection of air into the compression chamber with low pressure and effectively preventing gas backflow.

[0005] The second object of the present invention is to provide a pump body assembly having the above-mentioned air supplement and enthalpy increase assembly.

[0006] A third object of the present invention is to provide a compressor having the above pump body assembly.

[0007] A fourth object of the present invention is to provide a refrigeration device having the above compressor.

[0008] To achieve the above-mentioned first purpose, the present invention provides an air-increasing enthalpy-increasing component, including a base, a first slider, a second slider, a first elastic reset member and a second elastic reset member, the base is provided with a first slide groove and a second slide groove, the first slider slidably cooperates with the first slide groove, and the second slider slidably cooperates with the second slide groove; the groove wall of the first slide groove is provided with a first compression chamber connecting port and a first air-increasing connecting port, and the groove wall of the second slide groove is provided with a second compression chamber connecting port and a second air-increasing connecting port; in a first state, the first slider is forced to move to a first disconnected position, the first compression chamber connecting port and the first air-increasing connecting port are not connected, the second elastic reset member drives the second slider to move to the second connected position, the second compression chamber connecting port and the second air-increasing connecting port are connected; in a second state, the first elastic reset member drives the first slider to move to the first connected position, the first compression chamber connecting port and the first air-increasing connecting port are connected, the second slider is forced to move to the second disconnected position, the second compression chamber connecting port and the second air-increasing connecting port are not connected.

[0009] It can be seen from the above scheme that when the air-increasing enthalpy component is applied to the compressor, the first compression chamber communication port is connected to the first compression chamber, and the second compression chamber communication port is connected to the second compression chamber. When the first compression chamber is a high-pressure chamber and the second compression chamber is a low-pressure chamber, the air-increasing enthalpy component is in the first state, and the high-pressure gas in the high-pressure chamber enters the first slide groove through the first compression chamber communication port, driving the first slider to move to the first disconnected position. At this time, the first compression chamber communication port and the first air-increasing communication port are not connected. At the same time, the second slider is maintained in the second communication position under the elastic restoring force of the second elastic reset member, and the second compression chamber communication port is connected. The gas entering from the second air-increasing communication port enters the second compression chamber as a low-pressure chamber from the second compression chamber communication port. When the first compression chamber is a low-pressure chamber and the second compression chamber is a high-pressure chamber, the air-increasing enthalpy component is in the second state, the first slider moves to the first communication position under the action of the first elastic reset member, and the second slider moves to the second disconnected position under the action of the high-pressure gas, and the gas entering from the first air-increasing communication port enters the first compression chamber as a low-pressure chamber from the first compression chamber communication port. Therefore, the slider of the present invention moves through the pressure difference between the two compression chambers and the elastic reset member, controls the connection between the low-pressure chamber and the air supply channel, thereby realizing the injection of air supply to the compression chamber with low pressure, and the structure can effectively prevent gas backflow.

[0010] At the same time, the slider and elastic reset part of the air-increasing and reheat-increasing assembly are both located inside the base, taking up no extra space inside the pump body. The structure is compact, which effectively improves the volumetric efficiency of the reheat-increasing and reheat-increasing air compressor, greatly improves the energy efficiency of the compressor, and can increase the operating range of the compressor without being affected by working conditions.

[0011] Therefore, the air-increasing and reheat-increasing component of the present invention can solve the shortcomings of the two existing air-increasing structures, can provide the maximum air-increasing amount to the compressor without being affected by the working conditions, can greatly improve the volumetric efficiency of the compressor under the existing air-increasing and reheat-increasing technology, and can solve the reflux problem that occurs during the air-increasing process.

[0012] A preferred solution is that a first air-supply channel is provided in the first slider, and in the second state, the first compression chamber connecting port and the first air-supply connecting port are connected through the first air-supply channel; and / or a second air-supply channel is provided in the second slider, and in the first state, the second compression chamber connecting port and the second air-supply connecting port are connected through the second air-supply channel.

[0013] A further solution is that the first air-inflation communication port is located on the first slot wall of the first slide slot, the first slot wall is slidably matched with the first slider; in the first state, the first slot wall covers the inlet end of the first air-inflation channel. And / or the second air-inflation communication port is located on the second slot wall of the second slide slot, the second slot wall is slidably matched with the second slider; in the second state, the second slot wall covers the inlet end of the second air-inflation channel.

[0014] It can be seen that the first air replenishment channel is stably opened and closed by the sliding cooperation between the first slider and the first groove wall, and the second air replenishment channel is stably opened and closed by the sliding cooperation between the second slider and the second groove wall, and the structure is simple.

[0015] A preferred solution is that, along the sliding direction of the first slider, the first compression chamber communication port and the first elastic return member are respectively arranged on opposite sides of the first slider. And / or along the sliding direction of the second slider, the second compression chamber communication port and the second elastic return member are respectively arranged on opposite sides of the second slider.

[0016] It can be seen that by arranging the first compression chamber communication port and the first elastic reset member on opposite sides of the first slider, respectively, the driving force of the high-pressure gas on the first slider and the elastic restoring force of the first elastic reset member are maximized. By arranging the second compression chamber communication port and the second elastic reset member on opposite sides of the second slider, respectively, the driving force of the high-pressure gas on the second slider and the elastic restoring force of the second elastic reset member are maximized.

[0017] A preferred solution is that the axial direction of the base is parallel to the vertical direction; the first slide groove is recessed downward from the upper surface of the base, and the first slide groove extends along the radial or chordal direction of the base; and / or the second slide groove is recessed downward from the upper surface of the base, and the second slide groove extends along the radial or chordal direction of the base.

[0018] It can be seen that by setting the notch of the slide groove upward, the influence of the slider's gravity or other factors can be eliminated, ensuring that the slider moves only under the pressure difference of the compression chamber.

[0019] A preferred solution is that the bottom wall of the first chute and the bottom wall of the second chute are both parallel to the horizontal plane.

[0020] It can be seen that by designing the bottom wall of the slide groove to be parallel to the horizontal plane, the slider can be further prevented from being affected by gravity.

[0021] A preferred solution is that a gas supply port is opened on the base, and the first gas supply connecting port and the second gas supply connecting port are both connected to the gas supply port; or two gas supply ports are opened on the base, one of which is connected to the first gas supply connecting port, and the other is connected to the second gas supply connecting port.

[0022] It can be seen that the air-increasing and reheat-increasing component can be set on the pump body partition, cylinder or flange, and when the air-increasing and reheat-increasing component is designed on the partition, the air-increasing liquid distributor only needs one air inlet end, which can reduce the number of shell openings and the number of air-increasing bends, effectively saving costs.

[0023] A preferred solution is that the first sliding groove and the second sliding groove are arranged parallel to and close to each other.

[0024] A preferred solution is that the base is arranged on the pump body partition and is integrally formed with the pump body partition.

[0025] To achieve the above-mentioned second purpose, the present invention provides a pump body assembly, including a first compression chamber, a second compression chamber and the above-mentioned air replenishment and enthalpy increase assembly; the first compression chamber connecting port is connected to the first compression chamber, and the second compression chamber connecting port is connected to the second compression chamber.

[0026] A preferred solution is that the pump body assembly includes an upper cylinder and a lower cylinder, the upper cylinder and the lower cylinder are arranged in a vertical direction, the first compression chamber is located in the upper cylinder, and the second compression chamber is located in the lower cylinder; the base includes a first base portion and a second base portion, the first slide groove is located on the first base portion, and the second slide groove is located on the second base portion.

[0027] A further solution is that the first base portion is located on the upper cylinder and is integrally formed with the upper cylinder, the second base portion is located on the lower cylinder and is integrally formed with the lower cylinder, the upper cylinder and the lower cylinder are respectively provided with an air supply port, the air supply port of the upper cylinder is connected to the first air supply connecting port, and the air supply port of the lower cylinder is connected to the second air supply connecting port.

[0028] A further solution is that the pump body assembly includes an upper flange and a lower flange, the upper flange is arranged above the upper cylinder, and the lower flange is arranged below the lower cylinder; the first base portion is located on the upper flange and is integrally formed with the upper flange, the second base portion is located on the lower flange and is integrally formed with the lower flange, the upper flange and the lower flange are respectively provided with an air supply port, the air supply port of the upper flange is connected with the first air supply connecting port, and the air supply port of the lower flange is connected with the second air supply connecting port.

[0029] It can be seen from this that the air supplement and enthalpy increase component can also be set on the flange or the cylinder, and its position can be flexibly adjusted according to needs.

[0030] To achieve the third objective, the present invention provides a compressor comprising the pump body assembly described above.

[0031] To achieve the fourth objective, the present invention provides a refrigeration device including the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a cross-sectional view of a compressor embodiment of the present invention.

[0033] Figure 2 It is a structural diagram of the gas replenishing liquid distributor in the compressor embodiment of the present invention.

[0034] Figure 3 It is a structural diagram of the upper cylinder in the compressor embodiment of the present invention.

[0035] Figure 4 It is a structural diagram of the lower cylinder in the compressor embodiment of the present invention.

[0036] Figure 5 It is a top view of the pump body partition and the air replenishing and enthalpy increasing component in the compressor embodiment of the present invention.

[0037] Figure 6 yes Figure 5 A partial enlarged view of point A in the middle.

[0038] Figure 7 It is a stereoscopic diagram of a pump body partition and an air-supplementing and enthalpy-increasing component in an embodiment of a compressor of the present invention.

[0039] Figure 8 yes Figure 7 A partial enlarged view of point B in the middle.

[0040] Fig. 9 1 is a structural diagram of the first slider in the compressor embodiment of the present invention.

[0041] Fig.10 4 is a cross-sectional view of a first slider in an embodiment of a compressor of the present invention.

[0042] Fig.11 It is a cross-sectional view of a pump body partition, a first slider and a first elastic return member in an embodiment of a compressor of the present invention.

[0043] Fig.12 yes Fig.11 A partial enlarged view of point C in the middle.

[0044] Fig.13 It is a cross-sectional view of a pump body partition, a second slider and a second elastic return member in an embodiment of a compressor of the present invention.

[0045] Fig.14 yes Fig.13 A partial enlarged view of point D in the middle.

[0046] Fig.15 It is a cross-sectional view of a pump body partition in an embodiment of a compressor of the present invention.

[0047] Fig.16 1 is a diagram showing the pressure variation in the double-cylinder compression chamber in the compressor embodiment of the present invention.

[0048] Fig.17 It is a schematic diagram of the principle of replenishing air to the second compression chamber in the compressor embodiment of the present invention.

[0049] Fig.18 It is a schematic diagram of the principle of replenishing air to the first compression chamber in the compressor embodiment of the present invention.

[0050] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0051] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, rather than as limitations.

[0052] The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0053] In the present invention, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0054] All terms (including technical terms or scientific terms) used in the present invention have the same meanings as those understood by ordinary technicians in the field, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0055] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0056] See also Figures 1 to 4 The refrigeration device of this embodiment includes a compressor, and the compressor includes a housing 11, an air suction liquid distributor 12, an air supply liquid distributor 13, a motor 14 and a pump body assembly 15. The pump body assembly 15 is a double-cylinder structure.

[0057] The pump body assembly 15 includes an upper cylinder 21 , a lower cylinder 22 , a crankshaft 23 , a pump body partition 24 , an upper flange 25 , a lower flange 26 and an air supplementation and enthalpy increase assembly 3 .

[0058] The upper flange 25, the upper cylinder 21, the pump body partition 24, the lower cylinder 22 and the lower flange 26 are arranged in sequence along the vertical direction. The crankshaft 23 is provided with an upper eccentric portion 231 and a lower eccentric portion 232 arranged at intervals. The eccentric directions of the upper eccentric portion 231 and the lower eccentric portion 232 are opposite. The upper roller 291 is arranged at the upper eccentric portion 231, and the lower roller 292 is arranged at the lower eccentric portion 232. The upper roller 291 is located in the upper cylinder 21, and the lower roller 292 is located in the lower cylinder 22.

[0059] See also Figures 5 to 15 The air replenishing enthalpy increasing component 3 includes a base 4, a first slider 5, a second slider 6, a first elastic reset member 7 and a second elastic reset member 8. In this embodiment, the base 4 is at least a part of the pump body partition 24, that is, the base 4 is arranged on the pump body partition 24 and is integrally formed with the pump body partition 24, or the pump body partition 24 is the base 4. Preferably, the first elastic reset member 7 and the second elastic reset member 8 are both springs.

[0060] The base 4 is provided with an air supply port 41 , a first slide groove 42 and a second slide groove 43 . The first slide groove 42 and the second slide groove 43 are arranged parallel to and close to each other.

[0061] The groove wall of the first slide groove 42 is provided with a first compression chamber connecting port 421 and a first air replenishing connecting port 422, the upper cylinder 21 is provided with an upper cylinder connecting port 212, and the upper surface of the pump body partition 24 is provided with a first partition connecting port 241. The first compression chamber connecting port 421, the first partition connecting port 241, the upper cylinder connecting port 212 and the first compression chamber 211 of the upper cylinder 21 are connected in sequence. Along the sliding direction of the first slider 5, the first compression chamber connecting port 421 and the first elastic return member 7 are respectively arranged on the opposite sides of the first slider 5, and the first air replenishing connecting port 422 is located on the first groove wall 420 of the first slide groove 42, and the first groove wall 420 is slidably matched with the first slider 5.

[0062] The groove wall of the second chute 43 is provided with a second compression chamber communication port 431 and a second air replenishment communication port 432, the lower cylinder 22 is provided with a lower cylinder communication port 222, and the lower surface of the pump body partition 24 is provided with a second partition communication port 242. The second compression chamber communication port 431, the second partition communication port 242, the lower cylinder communication port 222 and the second compression chamber 221 of the lower cylinder 22 are sequentially connected. Along the sliding direction of the second slider 6, the second compression chamber communication port 431 and the second elastic return member 8 are respectively arranged on the opposite sides of the second slider 6, and the second air replenishment communication port 432 is located on the second groove wall 430 of the second chute 43, and the second groove wall 430 is slidably matched with the second slider 6. The first air replenishment communication port 422 and the second air replenishment communication port 432 are both connected with the air replenishment port 41, and the air replenishment port 41 is arranged on the side peripheral wall of the pump body partition 24. By designing the air-infusing enthalpy-increasing component 3 on the pump body partition 24, the air-infusing liquid separator 13 only needs one air inlet end, which can reduce the number of openings in the shell 11 and the number of air-infusing elbows, effectively saving costs.

[0063] The axial direction of the pump body partition 24 is parallel to the vertical direction, the first slide groove 42 is recessed downward from the upper surface of the pump body partition 24, and the first slide groove 42 extends along the radial or chordal direction of the pump body partition 24, the second slide groove 43 is recessed downward from the upper surface of the pump body partition 24, and the second slide groove 43 extends along the radial or chordal direction of the pump body partition 24, and the bottom wall of the first slide groove 42 and the bottom wall of the second slide groove 43 are both parallel to the horizontal plane, thereby ensuring that the slider moves in the horizontal direction to eliminate the influence of the slider's gravity or other factors, and ensure that the slider moves only due to the pressure difference in the compression chamber.

[0064] A first air replenishing channel 51 is arranged in the first slider 5, and a second air replenishing channel 61 is arranged in the second slider 6. The first slider 5 and the second slider 6 are both rectangular parallelepipeds, and the first air replenishing channel 51 and the second air replenishing channel 61 are both L-shaped. The outlet end of the air replenishing channel and the positioning groove for installing the elastic reset member are respectively located at the center position of the corresponding side wall on the corresponding slider. Only one slider structure needs to be processed, and the slider can be rotated according to the positions of the air replenishing connecting port, the compression chamber connecting port and the inlet end and the outlet end of the air replenishing channel to cooperate with the corresponding sliding groove.

[0065] A positioning groove 52 is provided on the side wall of the first slider 5 away from the first compression chamber connecting port 421, and the first elastic reset member 7 is installed in the positioning groove 52. The elastic restoring force of the first elastic reset member 7 drives the first slider 5 to move from the first disconnected position toward the first connected position. When the first slider 5 is in the first connected position, the inlet end of the first air replenishing channel 51 is opposite to and connected with the first air replenishing connecting port 422, and the outlet end of the first air replenishing channel 51 is opposite to and connected with the first compression chamber connecting port 421. When the first slider 5 is in the first disconnected position, the first groove wall 420 covers the inlet end of the first air replenishing channel 51.

[0066] A positioning groove 62 is provided on the side wall of the second slider 6 away from the second compression chamber communication port 431, and the second elastic reset member 8 is installed in the positioning groove 62. The elastic restoring force of the second elastic reset member 8 drives the second slider 6 to move from the second disconnected position to the second connected position. When the second slider 6 is in the second connected position, the inlet end of the second air replenishment channel 61 is opposite to and connected with the second air replenishment communication port 432, and the outlet end of the second air replenishment channel 61 is opposite to and connected with the second compression chamber communication port 431. When the second slider 6 is in the second disconnected position, the second groove wall 430 covers the inlet end of the second air replenishment channel 61.

[0067] During the operation of the compressor, since the eccentric directions of the upper eccentric portion 231 and the lower eccentric portion 232 of the crankshaft 23 are opposite, the pressures of the first compression chamber 211 and the second compression chamber 221 are different at the same time. The pressure changes of the compression chambers at the same time are as follows: Fig.16 As shown, the figure shows the changes in the compression chamber of R410a refrigerant when the suction pressure is 0.997MPa and the exhaust pressure is 3.39MPa.

[0068] See also Fig.17 When the first compression chamber 211 is a high-pressure chamber and the second compression chamber 221 is a low-pressure chamber, the air-increasing enthalpy-increasing component 3 is in the first state, and the high-pressure gas in the high-pressure chamber enters the first slide groove 42 through the first compression chamber connecting port 421, driving the first slider 5 to move to the first disconnected position. At this time, the first groove wall 420 covers the inlet end of the first air-increasing channel 51, and the first compression chamber connecting port 421 and the first air-increasing connecting port 422 are not connected. The first elastic reset member 7 is in a compressed state. At the same time, the second slider 6 is maintained in the second connecting position under the action of the elastic restoring force of the second elastic reset member 8. The second compression chamber connecting port 431 is connected to the second air-increasing connecting port 432, and the gas replenished from the air-increasing port 41 passes through the second air-increasing connecting port 432 and enters the second compression chamber 221 as a low-pressure chamber from the second compression chamber connecting port 431.

[0069] See also Fig.18When the first compression chamber 211 is a low-pressure chamber and the second compression chamber 221 is a high-pressure chamber, the air-increasing enthalpy-increasing component 3 is in the second state, the first slider 5 moves to the first connecting position under the action of the first elastic reset member 7, and the second slider 6 moves to the second disconnecting position under the action of the high-pressure gas. The second groove wall 430 covers the inlet end of the second air-increasing channel 61, and the second compression chamber connecting port 431 and the second air-increasing connecting port 432 are not connected. The second elastic reset member 8 is in a compressed state, and the gas replenished from the air-increasing port 41 passes through the first air-increasing connecting port 422 and enters the first compression chamber 211 as a low-pressure chamber from the first compression chamber connecting port 421.

[0070] As can be seen from the above, the slider of the present invention moves through the pressure difference between the two compression chambers and the elastic reset member, controls the connection between the low-pressure chamber and the air replenishment channel, ensures that the air is always replenished to the side of the compression chamber with low pressure, and can realize continuous air replenishment and enthalpy increase on the low-pressure side. And because the present invention replenishes air to the low-pressure side channel according to the pressure difference, no matter which compression chamber is replenished, the high-pressure side air replenishment channel will always be closed with the movement of the slider, which can effectively prevent the refrigerant from flowing back. At the same time, the slider and elastic reset member of the air replenishment and enthalpy increase component are both located in the base, do not occupy additional space in the pump body, have a compact structure, effectively improve the volumetric efficiency of the enthalpy increase air replenishment compressor, greatly improve the energy efficiency of the compressor, and can improve the operating range of the compressor without being affected by the working conditions. Therefore, the air replenishment and enthalpy increase component of the present invention can solve the shortcomings of the two existing air replenishment structures, can provide the maximum air replenishment amount to the compressor without being affected by the working conditions, can greatly improve the volumetric efficiency of the compressor under the existing air replenishment and enthalpy increase technology, and can solve the reflux problem that occurs during the air replenishment process.

[0071] In addition, two air supply ports may be provided on the base, one of which is connected to the first air supply connection port, and the other is connected to the second air supply connection port. The base may also include a first base portion and a second base portion, the first base portion is located on the upper cylinder and is integrally formed with the upper cylinder, the second base portion is located on the lower cylinder and is integrally formed with the lower cylinder, at this time, the first slide is located on the first base portion, the second slide is located on the second base portion, and the upper cylinder and the lower cylinder are respectively provided with an air supply port, the air supply port of the upper cylinder is connected to the first air supply connection port, and the air supply port of the lower cylinder is connected to the second air supply connection port; or the first base portion is located on the upper flange and is integrally formed with the upper flange, the second base portion is located on the lower flange and is integrally formed with the lower flange, and the upper flange and the lower flange are respectively provided with an air supply port, the air supply port of the upper flange is connected to the first air supply connection port, and the air supply port of the lower flange is connected to the second air supply connection port. The position of the chute on the pump body partition, the upper cylinder, the lower cylinder, the upper flange or the lower flange, as well as the opening direction of the chute can be changed as needed. The shape, size, etc. of the slider and the chute can be changed as needed. The position of the compression chamber connecting port and the air supply connecting port on the groove wall of the chute, the shape and size of the two, etc. can also be changed as needed. When the two ends of the slider in the sliding direction are not at the same level, a support member such as a spring can be set at one end to offset the slider's gravity or other forces. The above changes can also achieve the purpose of the present invention.

[0072] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An air replenishing and enthalpy increasing component, characterized in that: It includes a base, a first slider, a second slider, a first elastic reset member and a second elastic reset member. The base is provided with a first slide groove and a second slide groove, the first slider is slidably matched with the first slide groove, and the second slider is slidably matched with the second slide groove; The groove wall of the first chute is provided with a first compression chamber communication port and a first air supply communication port, and the groove wall of the second chute is provided with a second compression chamber communication port and a second air supply communication port; In the first state, the first slider is forced to move to the first disconnected position, the first compression chamber communication port and the first gas replenishment communication port are not connected, and the second elastic reset member drives the second slider to move to the second communication position, the second compression chamber communication port and the second gas replenishment communication port are connected; In the second state, the first elastic return member drives the first slider to move to the first connecting position, the first compression chamber connecting port and the first air replenishing connecting port are connected, and the second slider is forced to move to the second disconnecting position, and the second compression chamber connecting port and the second air replenishing connecting port are not connected.

2. The air supplement and enthalpy increase component according to claim 1, characterized in that: A first air supplement channel is provided in the first slider, and in the second state, the first compression chamber communication port and the first air supplement communication port are connected through the first air supplement channel; and / or A second air supplement channel is provided in the second sliding block. In a first state, the second compression chamber communication port and the second air supplement communication port are communicated with each other through the second air supplement channel.

3. The air supplement and enthalpy increase component according to claim 2, characterized in that: The first air supplement communication port is located on the first slot wall of the first slide slot, the first slot wall is slidably matched with the first slider, and in the first state, the first slot wall covers the inlet end of the first air supplement channel; and / or The second air supplement communication port is located on the second slot wall of the second slide slot, and the second slot wall is slidably matched with the second slider. In the second state, the second slot wall covers the inlet end of the second air supplement channel.

4. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: Along the sliding direction of the first sliding block, the first compression chamber communication port and the first elastic reset member are respectively arranged on two opposite sides of the first sliding block; and / or Along the sliding direction of the second sliding block, the second compression chamber communication port and the second elastic reset member are respectively arranged on two opposite sides of the second sliding block.

5. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: The axial direction of the base is parallel to the vertical direction; The first slide groove is recessed downward from the upper surface of the base, and the first slide groove extends along the radial direction or chord direction of the base; and / or The second slide groove is recessed downward from the upper surface of the base, and the second slide groove extends along the radial direction or chord direction of the base.

6. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: The bottom wall of the first chute and the bottom wall of the second chute are both parallel to the horizontal plane.

7. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: The first sliding groove and the second sliding groove are arranged parallel to each other and close to each other.

8. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: The base is provided with a gas replenishment port, and the first gas replenishment communication port and the second gas replenishment communication port are both connected to the gas replenishment port; or The base is provided with two air supply ports, one of which is communicated with the first air supply connecting port, and the other of which is communicated with the second air supply connecting port.

9. The air supplement and enthalpy increase component according to any one of claims 1 to 3, characterized in that: The base is arranged on the pump body partition and is integrally formed with the pump body partition.

10. A pump assembly, characterized in that: It comprises a first compression chamber, a second compression chamber and an air supplement and enthalpy increase component as claimed in any one of claims 1 to 7; The first compression chamber communication port is communicated with the first compression chamber, and the second compression chamber communication port is communicated with the second compression chamber.

11. The pump assembly according to claim 10, characterized in that: The pump body assembly comprises an upper cylinder and a lower cylinder, wherein the upper cylinder and the lower cylinder are arranged in a vertical direction, the first compression chamber is located in the upper cylinder, and the second compression chamber is located in the lower cylinder; The base includes a first base portion and a second base portion, the first slide groove is located on the first base portion, and the second slide groove is located on the second base portion.

12. The pump assembly according to claim 11, characterized in that: The first base portion is located on the upper cylinder and is integrally formed with the upper cylinder, the second base portion is located on the lower cylinder and is integrally formed with the lower cylinder, the upper cylinder and the lower cylinder are respectively provided with an air supply port, the air supply port of the upper cylinder is connected with the first air supply connecting port, and the air supply port of the lower cylinder is connected with the second air supply connecting port.

13. The pump assembly according to claim 11, characterized in that: The pump body assembly comprises an upper flange and a lower flange, wherein the upper flange is arranged above the upper cylinder and the lower flange is arranged below the lower cylinder; The first base portion is located on the upper flange and is integrally formed with the upper flange, the second base portion is located on the lower flange and is integrally formed with the lower flange, the upper flange and the lower flange are respectively provided with an air supply port, the air supply port of the upper flange is connected with the first air supply connecting port, and the air supply port of the lower flange is connected with the second air supply connecting port.

14. A compressor, characterized in that Comprising a pump body assembly as claimed in any one of claims 10 to 13.

15. Refrigeration equipment, characterized in that Comprising the compressor of claim 14.

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