Air supply enthalpy increasing pipe mechanism, compression device and air conditioning equipment

Abstract

The present invention provides a gas replenishing and enthalpy increasing pipe mechanism, a compression device and an air conditioning equipment, relating to the technical field of air conditioning equipment. The gas replenishing and enthalpy increasing pipe mechanism includes a connecting seat and a check valve assembly. A gas replenishing pipe for communicating with a gas replenishing and enthalpy increasing device is installed on the connecting seat. The connecting seat is installed in a gas replenishing sink hole on the compression cavity of a compressor, and the gas replenishing pipe communicates with the compression cavity of the compressor through the gas replenishing sink hole. The check valve assembly is arranged in the gas replenishing sink hole and is used for controlling the conduction or closing in the direction from the gas replenishing pipe to the compression cavity. Based on the technical solution of the present invention, it can effectively prevent the gas in the compressor from flowing back to the gas replenishing and enthalpy increasing device. Moreover, the check valve structure is arranged in the gas replenishing sink hole of the compression cavity of the compressor, which can more effectively reduce the gas flowing back from the compression cavity of the compressor into the gas replenishing and enthalpy increasing pipe, thereby being able to more effectively reduce the strain generated by the flowing back gas in the gas replenishing and enthalpy increasing pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and particularly to an enthalpy-increasing air supplement pipe mechanism, a compression device, and an air conditioning equipment. Background Art

[0002] Scroll compressors are widely used in ordinary refrigeration and air conditioning systems due to their advantages such as simple structure, small size, light weight, and high efficiency. However, when applying an ordinary refrigeration and air conditioning system to heating in cold northern regions or air source heat pumps, under the condition of low ambient temperature and high condensation temperature, the compression ratio of the compressor will increase, which will cause an increase in the suction specific volume at the suction end of the compressor and a decrease in the gas transmission coefficient, resulting in insufficient heating capacity of the compressor and too high exhaust temperature. This will cause the working efficiency of the compressor to decrease rapidly, and long-term operation will increase problems such as wear between mechanical components and failure of the refrigeration oil, greatly reducing the long-term reliability of the compressor.

[0003] To solve the above series of problems, the currently common technology is to set an enthalpy-increasing air supplement device on the compressor. Due to its advantages such as significantly improving the heating capacity and energy efficiency of the system under low-temperature or ultra-low-temperature conditions and improving the reliability of the compressor, it has gradually become an important development direction of the heat pump system. The enthalpy-increasing air supplement device injects the refrigerant at the intermediate pressure directly into the compression cavity of the scroll compressor body through an externally connected enthalpy-increasing pipe and an enthalpy-increasing channel, increasing the compression mass flow rate and reducing the exhaust specific enthalpy, thereby improving the energy efficiency and reliability of the compressor. However, for the existing enthalpy-increasing air supplement devices, they cannot effectively prevent the reverse flow of gas in the compression cavity to the enthalpy-increasing air supplement device. Once the pressure in the compression cavity is greater than the air supplement pressure of the enthalpy-increasing air supplement device, the gas in the compression cavity will flow back to the enthalpy-increasing air supplement device through the enthalpy-increasing air supplement pipe, increasing the strain of the enthalpy-increasing air supplement pipe and the like, which is likely to cause the enthalpy-increasing air supplement pipe and the like to break, resulting in problems such as refrigerant leakage. Moreover, the reverse flow of gas in the compression cavity will also cause a relatively large amount of gas that the compressor needs to recompress under the condition where air supplement is not required, increasing the power consumption of the compressor. Summary of the Invention

[0004] Aiming at the problems in the above-mentioned existing technology, the present application provides an enthalpy-increasing air supplement pipe mechanism, a compression device, and an air conditioning equipment to solve the problem of the reverse flow of gas in the compression cavity to the enthalpy-increasing air supplement device.

[0005] On the one hand, the present invention provides an enthalpy-increasing air supplement pipe mechanism, and the enthalpy-increasing air supplement pipe mechanism includes:

[0006] A connection seat, on which a supplement air pipe for communicating with an enthalpy-increasing air supplement device is installed. The connection seat is installed in a supplement air sink on the compression cavity of the compressor, and the supplement air pipe communicates with the compression cavity of the compressor through the supplement air sink; and

[0007] Check valve assembly, which is arranged in the air supplement sunken hole and is used to control the on or off of the air flow from the air supplement pipe to the compression chamber.

[0008] As a further improvement of the above technical solution:

[0009] For the above air supplement and enthalpy increase pipe mechanism, further, the check valve assembly includes an air supplement valve plate, which can move in the air supplement channel formed in the air supplement sunken hole under the pressure difference between the air supplement pipe and the compression chamber to control the on or off of the air supplement channel.

[0010] For the above air supplement and enthalpy increase pipe mechanism, further, the check valve assembly further includes an elastic member. One end of the elastic member is connected to the air supplement valve plate, and the other end is fixed relative to the compression chamber body. It is used to make the air supplement valve plate fit on the end face where the air vent of the connection seat is located when the pressure in the compression chamber is greater than or equal to the pressure in the air supplement pipe, so as to block the air supplement channel.

[0011] For the above air supplement and enthalpy increase pipe mechanism, further, a first air vent penetrating the upper and lower surfaces of the air supplement valve plate is provided on the air supplement valve plate. The air supplement valve plate can at least move in the air supplement channel under the action of the pressure difference to fit on the end face of the connection seat, and the first air vent of the air supplement valve plate in the fitting state is completely staggered from the air vent of the connection seat end face.

[0012] For the above air supplement and enthalpy increase pipe mechanism, further, a plurality of the first air vents are arranged circumferentially on the air supplement valve plate and enclose a positioning contact area located at the center of the air supplement valve plate.

[0013] For the above air supplement and enthalpy increase pipe mechanism, further, the air supplement and enthalpy increase pipe mechanism further includes an enthalpy increase base. The enthalpy increase base is installed in the air supplement sunken hole and is opposite to the connection seat, and a second air vent communicating with the air supplement channel is provided on the enthalpy increase base. The air supplement valve plate can at least move away from the end face of the connection seat in the air supplement channel under the action of the pressure difference, so that the air vent of the connection seat end face is connected to the second air vent through the first air vent.

[0014] For the above air supplement and enthalpy increase pipe mechanism, further, the enthalpy increase base includes an outer cylinder body and a positioning column located inside the outer cylinder body. The positioning column is connected to the inner side wall of the outer cylinder body through a plurality of connecting columns arranged at intervals along its circumference, and the second air vent penetrating the upper and lower surfaces of the enthalpy increase base is formed between adjacent two connecting columns.

[0015] For the above air supplement and enthalpy increase pipe mechanism, further, the area of the end face of the positioning column close to the air supplement valve plate is 1 / 3 to 2 / 3 of the area of the plurality of positioning contact areas.

[0016] The above-mentioned air-injection and enthalpy-increasing pipe mechanism further has the end surface of the outer cylinder close to one end of the air-injection valve plate being flush with the end surface of the positioning column close to one end of the air-injection valve plate.

[0017] The above-mentioned air-supplying and enthalpy-increasing tube mechanism further has a positioning protrusion on the outer wall of the outer cylinder to form a gap between the outer cylinder and the inner wall of the air-supplying countersunk hole, and the elastic member is arranged in the gap, one end of the elastic member is in contact with the positioning protrusion, and the other end is connected to the air-supplying valve plate.

[0018] The above-mentioned air-injection and enthalpy-increasing pipe mechanism further has the positioning protrusion and the inner side wall of the air-injection countersunk hole being interference fit.

[0019] The above-mentioned air-supplying and enthalpy-increasing pipe mechanism further has the air-supplying pipe and the connecting seat as well as the connecting seat and the air-supplying countersunk hole being sealedly connected via a sealing structure.

[0020] The above-mentioned air-supplying and enthalpy-increasing tube mechanism further comprises a connecting base plate and a connecting protrusion extending from the connecting base plate and extending into the air-supplying countersunk hole to seal the air-supplying countersunk hole, and the end face of the connecting protrusion has an air vent connected to the air-supplying countersunk hole.

[0021] The above-mentioned air-supplementing and enthalpy-increasing pipe mechanism further has mounting holes on both sides of the connecting base plate for fixing the connecting base on the compression chamber.

[0022] The above-mentioned air-supplying and enthalpy-increasing pipe mechanism further has a filter screen provided in the air-supplying pipe.

[0023] The above-mentioned air-supplying and enthalpy-increasing pipe mechanism further has an expanded opening at one end of the air-supplying pipe away from the connecting seat, which is used to be connected to the air-supplying and enthalpy-increasing device.

[0024] Another aspect of the present invention provides a compression device, which includes a compressor having an air-supplementing countersunk hole and the air-supplementing enthalpy-increasing pipe mechanism as described above.

[0025] In another aspect, the present invention provides an air-conditioning device, comprising the compression device as described above.

[0026] The above technical features can be combined in various suitable ways or replaced by equivalent technical features, as long as the purpose of the present invention can be achieved.

[0027] A gas-supplementing and enthalpy-increasing pipe mechanism, a compression device, and an air-conditioning device provided by the present invention have at least the following beneficial effects compared with the prior art: the gas-supplementing and enthalpy-increasing pipe mechanism can effectively prevent the gas in the compressor from flowing back to the gas-supplementing and enthalpy-increasing device by setting a check structure. Moreover, the check structure is arranged in the gas-supplementing sink hole on the compression cavity of the compressor, which can more effectively reduce the gas flowing back from the compressor into the gas-supplementing and enthalpy-increasing pipe, thereby being able to more effectively reduce the strain generated by the flowing-back gas in the gas-supplementing and enthalpy-increasing pipe.

[0028] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] In the following, the present invention will be described in more detail based on the embodiments and with reference to the drawings. Among them:

[0031] Figure 1 shows a schematic structural diagram of the compression device provided by the embodiment of the present invention;

[0032] Figure 2 shows an exploded view of the gas-supplementing and enthalpy-increasing pipe mechanism provided by the embodiment of the present invention;

[0033] Figure 3 shows a schematic installation structure diagram of the gas-supplementing and enthalpy-increasing pipe mechanism provided by the embodiment of the present invention;

[0034] Figure 4 shows a schematic structural diagram of the enthalpy-increasing base of the gas-supplementing and enthalpy-increasing pipe mechanism provided by the embodiment of the present invention;

[0035] Figure 5 shows a schematic structural diagram of the connecting seat of the gas-supplementing and enthalpy-increasing pipe mechanism provided by the embodiment of the present invention.

[0036] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0037] Reference Numerals:

[0038] 100-air-supply and enthalpy-increasing pipe mechanism; 110-connecting seat; 111-connecting base plate; 112-connecting convex plate; 113-mounting groove; 114-venting groove; 115-first sealing groove; 116-second sealing groove; 117-mounting hole; 118-sealing gasket; 120-air-supply pipe; 121-filter screen; 130-check assembly; 131-air-supply valve plate; 132-elastic member; 133-first vent hole; 140-enthalpy-increasing base; 141-outer cylinder; 142-positioning column; 143-connecting column; 144-positioning protrusion; 200-compressor; 210-static scroll; 211-air-supply countersunk hole. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0043] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] The present invention will be further described below with reference to the accompanying drawings.

[0045] The embodiment of the present invention provides an air-supplementing and enthalpy-increasing pipe mechanism 100 to solve the problem of gas in the compression chamber flowing back toward the air-supplementing and enthalpy-increasing device.

[0046] See also Figures 1 to 5 The air-supplementing and reheat-increasing pipe mechanism 100 provided in an embodiment of the present invention includes a connecting seat 110 and a non-return assembly 130, on which an air-supplementing pipe 120 for connecting to the air-supplementing and reheat-increasing device is installed. The connecting seat 110 is used to be installed on the compression chamber of the compressor 200. In this embodiment, the compression chamber is a static scroll 210, and the air-supplementing pipe 120 is connected to an air-supplementing countersunk hole 211 provided on the back side of the static scroll 210; the non-return assembly 130 is located in the air-supplementing countersunk hole 211, and is used to control the air-supplementing pipe 120 to realize the conduction or closing between the compression chamber of the compressor 200 and the air-supplementing and reheat-increasing device along the direction from the air-supplementing and reheat-increasing device to the compressor 200.

[0047] The air-supply and reheat-increasing pipe mechanism 100 provided in an embodiment of the present invention can effectively prevent the gas in the compressor 200 from flowing back to the air-supply and reheat-increasing device by setting a non-return structure. Moreover, its non-return structure is set in the air-supply countersunk hole 211 on the back side of the static scroll 210 of the compressor 200, which can more effectively reduce the gas flowing back from the compressor 200 into the air-supply and reheat-increasing pipe, thereby more effectively reducing the strain caused by the backflow of gas in the air-supply and reheat-increasing pipe.

[0048] The embodiment of the present invention provides a gas-increasing enthalpy-increasing pipe mechanism 100, please refer to Figure 2 and Figure 3, specifically, the check component 130 includes an air replenishing valve plate 131 and an elastic member 132. The air replenishing valve plate 131 is used to block or connect the air replenishing pipe 120 with the air replenishing sink hole 211 under the action of a pressure difference. The elastic member 132 is used to attach the air replenishing valve plate 131 to the connecting seat 110 when the pressure in the compression cavity on the front side of the stationary scroll plate 210 is greater than or equal to the pressure in the air replenishing pipe 120. The elastic member 132 is installed in the air replenishing sink hole 211, and the air replenishing valve plate 131 is located between the elastic member 132 and the connecting seat 110. When the pressure in the compression cavity on the front side of the stationary scroll plate 210 is greater than or equal to the pressure in the air replenishing pipe 120, the air replenishing valve plate 131 is attached to the connecting seat 110 under the action of the elastic member 132 and / or the pressure difference to block the connection between the air replenishing pipe 120 and the air replenishing sink hole 211, and prevent the gas in the compression cavity from flowing back to the air replenishing and enthalpy-increasing device; when the pressure in the compression cavity on the front side of the stationary scroll plate 210 is less than the pressure in the air replenishing pipe 120, the air replenishing valve plate 131 moves away from the connecting seat 110 under the action of the pressure difference, so that the air replenishing pipe 120 is connected to the air replenishing sink hole 211, and the gas in the air replenishing and enthalpy-increasing device flows through the air replenishing pipe 120 into the compression cavity of the compressor 200.

[0049] A plurality of first ventilation holes 133 penetrating through the upper and lower surfaces of the air replenishing valve plate 131 are formed in the circumferential direction of the air replenishing valve plate 131. The area surrounded by the plurality of first ventilation holes 133 is used to be attached to the connecting seat 110 to block the connection between the air replenishing pipe 120 and the air replenishing sink hole 211. When the pressure in the compression cavity on the front side of the stationary scroll plate 210 is greater than or equal to the pressure in the air replenishing pipe 120, the area surrounded by the plurality of first ventilation holes 133 of the air replenishing valve plate 131 is attached to the connecting seat 110 under the action of the elastic member 132 and / or the pressure difference to block the connection between the air replenishing pipe 120 and the air replenishing sink hole 211, and prevent the gas in the compression cavity from flowing back to the air replenishing and enthalpy-increasing device; when the pressure in the compression cavity on the front side of the stationary scroll plate 210 is less than the pressure in the air replenishing pipe 120, the air replenishing valve plate 131 moves away from the connecting seat 110 under the action of the pressure difference, so that the air replenishing pipe 120 is connected to the air replenishing sink hole 211 through the first ventilation holes 133, and the gas in the air replenishing and enthalpy-increasing device flows through the air replenishing pipe 120 into the compression cavity of the compressor 200.

[0050] For the air replenishing and enthalpy-increasing pipe mechanism 100 provided by the embodiment of the present invention, further, please specifically refer to Figure 2 , Figure 3 and Figure 4The air-supplying enthalpy-increasing pipe mechanism 100 also includes an enthalpy-increasing base 140, which is installed in the air-supplying countersunk hole 211, and the enthalpy-increasing base 140 includes an outer cylinder 141 and a positioning column 142 located in the outer cylinder 141. The positioning column 142 is connected to the inner side wall of the outer cylinder 141 through a plurality of connecting columns 143 arranged at intervals along its circumference. The upper end surface of the positioning column 142 is not lower than the upper end surface of the outer cylinder 141. A second air vent is formed between two adjacent connecting columns 143, which passes through the upper and lower surfaces of the enthalpy-increasing base 140. The second air vent can be connected to the first air vent 133, and the air-supplying valve plate 131 moves between the connecting seat 110 and the enthalpy-increasing base 140.

[0051] When the pressure in the compression chamber on the front of the static vortex 210 is greater than or equal to the pressure in the air supply pipe 120, the area enclosed by the multiple first air holes 133 of the air supply valve plate 131 is attached to the connecting seat 110 under the action of the elastic member 132 and / or the pressure difference, so as to block the connection between the air supply pipe 120 and the air supply counterbore 211, and prevent the gas in the compression chamber from flowing back to the air supply enthalpy increase device; when the pressure in the compression chamber on the front of the static vortex 210 is lower than the pressure in the air supply pipe 120, the air supply valve plate 131 is moved away from the connecting seat 110 under the action of the pressure difference, so that the air supply pipe 120 is connected to the air supply counterbore 211 through the first air hole 133 and the second air hole, and the gas in the air supply enthalpy increase device flows into the compression chamber of the compressor 200 through the air supply pipe 120, thereby increasing the compression mass flow rate and reducing the exhaust specific enthalpy, thereby improving the energy efficiency and reliability of the compressor 200. The air supply valve plate 131 moves between the connecting seat 110 and the enthalpy increasing base 140 , reducing the movable distance of the air supply valve plate 131 in the air supply counterbore 211 , thereby preventing the air supply valve plate 131 from being damaged.

[0052] In this embodiment, the area of the upper surface of the positioning post 142 is 1 / 3 to 2 / 3 of the area of the region enclosed by the plurality of first vents 133. The larger upper surface area of the positioning post 142 provides a larger support area for the inflated air valve disc 131. When the pressure in the compression chamber in front of the stationary scroll 210 is lower than the pressure in the inflated air pipe 120, gas in the inflated air enthalpy increasing device impacts the center of the inflated air valve disc 131 through the inflated air pipe 120. As the pressure in the compression chamber in front of the stationary scroll 210 changes in real time, the inflated air valve disc 131 repeatedly collides with the upper surface of the positioning post 142. The larger support area ensures that the inflated air valve disc 131 is subjected to uniform force, optimizes force distribution, greatly improves the service life of the inflated air valve disc 131, and avoids reliability issues.

[0053] Preferably, please refer to Figure 4, the upper end surfaces of the outer cylinder 141 and the positioning column 142 are flush, and the upper end surface of the connecting column 143 is lower than the upper end surface of the outer cylinder 141. When the pressure in the compression chamber on the front side of the static scroll plate 210 is less than the pressure in the gas supply pipe 120, the gas in the gas supply and enthalpy increase device impacts the center of the gas supply valve plate 131 through the gas supply pipe 120. The outer cylinder 141 abuts against the edge of the gas supply valve plate 131. At the same time, the positioning column 142 abuts against the center of the gas supply valve plate 131. The gas supply valve plate 131 repeatedly collides with the upper surface of the positioning column 142. The outer cylinder 141 and the positioning column 142 support the gas supply valve plate 131 at the same time, making the force on the gas supply valve plate 131 uniform, optimizing the force distribution, and greatly improving the service life of the gas supply valve plate 131.

[0054] For the gas supply and enthalpy increase pipe mechanism 100 provided by the embodiment of the present invention, further, a positioning protrusion 144 is provided on the outer side wall of the outer cylinder 141. The elastic member 132 is a spring. The spring is sleeved on the outer side wall of the outer cylinder 141 and one end thereof abuts against the positioning protrusion 144. In this embodiment, the positioning protrusion 144 is arranged in a ring on the outer side wall of the outer cylinder 141, and the positioning protrusion 144 is located at the bottom end of the outer side wall of the outer cylinder 141. The positioning protrusion 144 is in interference fit with the inner side wall of the enthalpy increase sink 211 so that the enthalpy increase base 140 is positioned in the enthalpy increase sink 211. Of course, it can be understood that it can also be fixedly installed in the enthalpy increase sink 211 by other means, which is not limited herein.

[0055] For the gas supply and enthalpy increase pipe mechanism 100 provided by the embodiment of the present invention, specifically, an installation groove 113 for positioning and installing the gas supply pipe 120 is provided on the upper surface of the connection seat 110. A ventilation groove 114 communicating with the installation groove 113 is provided on the lower surface of the connection seat 110. A first sealing groove 115 for installing a sealing gasket 118 is provided on the inner side wall of the installation groove 113. The end of the gas supply pipe 120 is inserted into the installation groove 113 and is sealed with the connection seat 110 through the sealing gasket 118 located in the first sealing groove 115. This installation structure has the advantages of simplicity and convenience.

[0056] Further, please specifically refer to Figure 2 , Figure 3 and Figure 5 , the connection seat 110 includes a connection bottom plate 111 and a connection convex plate 112 located on the lower surface of the connection bottom plate 111 for extending into the enthalpy increase sink 211 to seal the enthalpy increase sink 211. The installation groove 113 is provided on the upper surface of the connection bottom plate 111. The ventilation groove 114 is provided on the lower surface of the connection convex plate 112. A second sealing groove 116 for installing a sealing gasket 118 is provided on the outer side wall of the connection convex plate 112.

[0057] On both sides of the connecting bottom plate 111, there are mounting holes 117 for passing bolts to fixedly install the connecting seat 110 on the back surface of the stationary scroll 210. During installation, the connecting bottom plate 111 is installed on the back surface of the stationary scroll 210 through bolts, and the connecting convex plate 112 extends into the air supplement sunken hole 211 and is sealed with the air supplement sunken hole 211 through the sealing washer 118 located in the second sealing groove 116. This structure has good sealing ability, and can significantly simplify the processing and installation of the parts of the air supplement and enthalpy increase pipe mechanism 100, greatly reducing the cost.

[0058] One end of the air supplement pipe 120 away from the connecting seat 110 is provided with a flared opening, which is used to be connected with the air supplement and enthalpy increase device. A filter net 121 is arranged in the air supplement pipe 120, which is used to filter the gas flowing from the air supplement and enthalpy increase device to the compression chamber of the compressor 200 through the air supplement pipe 120.

[0059] An embodiment of the present invention also provides a compression device, which includes a compressor 200 having an air supplement sunken hole 211 and the air supplement and enthalpy increase pipe mechanism 100 provided in the above embodiment. The specific structure of the air supplement and enthalpy increase pipe mechanism 100 refers to the above embodiment. Since this compression device adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0060] An embodiment of the present invention also provides an air-conditioning device, which includes an air supplement and enthalpy increase device and the compression device provided in the above embodiment. The specific structure of the compression device refers to the above embodiment. Since this air-conditioning device adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated one by one here.

[0061] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0062] Although the present invention has been described herein with reference to particular embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Accordingly, it should be understood that numerous modifications may be made to the exemplary embodiments, and other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a separate embodiment may be used in other described embodiments.

Claims

1. A gas-supplementing and enthalpy-increasing pipe mechanism, characterized in that, The air supplement and enthalpy increase pipe mechanism includes: A connecting seat, on which an air supplement pipe for connecting an air supplement and enthalpy increase device is installed. The connecting seat is installed in an air supplement sunken hole on the compression cavity of the compressor, and the air supplement pipe communicates with the compression cavity of the compressor through the air supplement sunken hole; and A check valve assembly, which is arranged in the air supplement sunken hole and is used to control the on or off of the direction from the air supplement pipe to the compression cavity; The check valve assembly includes an air supplement valve plate, on which a first ventilation hole penetrating through its upper and lower surfaces is opened. The air supplement valve plate can at least move in the air supplement channel of the air supplement sunken hole to fit with the end face of the connecting seat under the action of pressure difference, and in the fitting state, the first ventilation hole is completely staggered with the ventilation port on the end face of the connecting seat; The air supplement and enthalpy increase pipe mechanism further includes an enthalpy increase base, which is installed in the air supplement sunken hole and is opposite to the connecting seat. A second ventilation hole penetrating through the upper and lower surfaces of the enthalpy increase base is arranged on the enthalpy increase base. The air supplement valve plate can at least move away from the end face of the connecting seat in the air supplement channel under the action of pressure difference, so that the ventilation port on the end face of the connecting seat is communicated with the second ventilation hole; where The enthalpy increase base includes an outer cylinder body and a positioning column located inside the outer cylinder body. The end face of the outer cylinder body close to the air supplement valve plate is flush with the end face of the positioning column close to the air supplement valve plate. When the pressure in the compression cavity is less than the pressure in the air supplement pipe, the outer cylinder body abuts against the edge of the air supplement valve plate, and the positioning column abuts against the center of the air supplement valve plate. The air supplement valve plate moves away from the connecting seat under the action of pressure difference, so that the air supplement pipe is communicated with the air supplement sunken hole through the first ventilation hole and the second ventilation hole.

2. The air supplement and enthalpy increase pipe mechanism according to claim 1, characterized in that, The check valve assembly further includes an elastic member. One end of the elastic member is connected to the air supplement valve plate, and the other end is fixed relative to the compression cavity. It is used to make the air supplement valve plate fit on the end face where the ventilation port on the connecting seat is located when the pressure in the compression cavity is greater than or equal to the pressure in the air supplement pipe, so as to block the air supplement channel.

3. The air supplement and enthalpy increase pipe mechanism according to claim 1, characterized in that A plurality of the first ventilation holes are arranged circumferentially on the air supplement valve plate and enclose a positioning contact area located at the center of the air supplement valve plate.

4. The air supplement and enthalpy increase pipe mechanism according to claim 1, wherein, The positioning column is connected to the inner side wall of the outer cylinder body through a plurality of connecting columns arranged at intervals along its circumference, and a second ventilation hole penetrating through the upper and lower surfaces of the enthalpy increase base is formed between two adjacent connecting columns.

5. The air supplement and enthalpy increase tube mechanism according to claim 4, characterized in that, The area of the end face of the positioning column close to the air supplement valve plate is 1 / 3 to 2 / 3 of the area of the positioning contact area formed at the center of the air supplement valve plate.

6. The air-supplementing and enthalpy-increasing pipe mechanism according to claim 2, wherein A positioning protrusion is arranged on the outer side wall of the outer cylinder body so that a gap is formed between the outer cylinder body and the inner wall of the air supplement sunken hole. The elastic member is arranged in the gap, and one end of the elastic member abuts against the positioning protrusion and the other end is connected to the air supplement valve plate.

7. The air supplement and enthalpy increase pipe mechanism according to claim 6, wherein The positioning protrusion is in interference fit with the inner side wall of the air supplement sunken hole.

8. The air supplement and enthalpy increase pipe mechanism according to claim 1, characterized in that Both the air supplement pipe and the connecting seat and the connecting seat and the air supplement sunken hole are sealed and connected through a sealing structure.

9. The air supplement and enthalpy increase pipe mechanism according to claim 8, characterized in that, The connecting seat includes a connecting bottom plate and a connecting convex plate that extends from the connecting bottom plate and extends into the air supplement sunken hole to seal the air supplement sunken hole. The end face of the connecting convex plate has an air vent that communicates with the air supplement sunken hole.

10. The air supplement and enthalpy increase pipe mechanism according to claim 9, characterized in that, Installation holes are provided on both sides of the connecting bottom plate for fixedly installing the connecting seat on the compression cavity.

11. The air supplement and enthalpy increase pipe mechanism according to claim 1, characterized in that A filter screen is provided inside the air supplement pipe.

12. The air supplement and enthalpy increase pipe mechanism according to claim 1, wherein One end of the air supplement pipe away from the connecting seat is provided with a flared opening, which is used to connect with the air supplement and enthalpy increase device.

13. A compression device, characterized in that, The compression device includes a compressor having an air supplement sunken hole and the air supplement and enthalpy increase pipe mechanism according to any one of claims 1-12.

14. An air conditioning device, characterized in that, The air conditioning equipment includes the compression device according to claim 13.

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