Valve structure, cylinder assembly, compressor and heat exchange system

Abstract

The application provides a valve structure, a cylinder assembly, a compressor and a heat exchange system. The cylinder assembly comprises a cylinder and a valve structure. The cylinder is provided with a supplementary air passage in the radial direction thereof. The valve structure comprises an enthalpy-increasing valve core, a linkage rod, a valve plate and a limiting plate. The two ends of the linkage rod are respectively hinged between the enthalpy-increasing valve core and the valve plate. When the supplementary air passage is in a closed state, the blocking end surface of the enthalpy-increasing valve core moves and abuts on the limiting end surface of the second passage section to close the first passage section, and the valve plate slides towards the third passage section to cover and close the third passage section. When the supplementary air passage is in an open state, the blocking end surface of the enthalpy-increasing valve core moves away from the limiting end surface of the second passage section to open the first passage section, and the valve plate slides away from the third passage section to open the third passage section. The cylinder assembly can form two layers of closing capacity for the supplementary air passage, and can reduce and isolate the matching gap, so as to effectively prevent gas from leaking and backflowing from the matching gap, and improve the compression efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch valve equipment, in particular to a valve structure, a cylinder assembly, a compressor and a heat exchange system. BACKGROUND

[0002] The compressor is a kind of fluid machinery that can improve low-pressure gas to high-pressure gas, and is the heart of the heat exchange system, which can periodically inhale, compress and exhaust during operation. In the compressor, the cylinder assembly of the compressor is a core component of the compressor, which directly affects the heat exchange performance of the compressor.

[0003] In order to improve the compression efficiency and heat exchange efficiency of the cylinder assembly under extremely low temperature working condition and extremely high temperature working condition, the existing cylinder assembly is usually provided with a supplementary gas passage on the cylinder, the supplementary gas passage is communicated with the compression chamber of the cylinder, and then the intermediate pressure gas with a pressure between suction pressure and discharge pressure is input into the compression chamber of the cylinder through the supplementary gas passage to increase the compression amount of the compression chamber, so as to achieve the purpose of increasing the enthalpy of the compression chamber.

[0004] In order to prevent gas leakage and backflow from the supplementary gas passage, the existing cylinder assembly is provided with a valve structure in the supplementary gas passage, which moves in different directions in the supplementary gas passage under the pressure difference between the compressed gas in the compression chamber and the supplementary gas in the supplementary gas passage, so as to realize the conduction or closing between the supplementary gas passage and the compression chamber of the cylinder. When the valve structure moves to close the supplementary gas passage, the gas leakage and backflow phenomenon can be inhibited.

[0005] However, in order to ensure the smoothness of the valve structure moving in different directions in the supplementary gas passage to realize conduction or closing, the valve structure of the existing cylinder assembly is in clearance fit with the supplementary gas passage, so that there is a fit clearance between the valve structure and the supplementary gas passage. When the valve structure closes the supplementary gas passage, there is still gas leakage and backflow from the fit clearance, which reduces the compression efficiency. In addition, the existing valve structure only has one layer of closing ability for the supplementary gas passage, so the closing work of the existing valve structure for the supplementary gas passage is not stable enough, which affects the compression stability and further affects the heat exchange stability of the compressor. SUMMARY

[0006] In order to achieve the first purpose of the present application, the present application provides a cylinder assembly which can form two layers of closing ability for the supplementary gas passage to improve the working stability and reliability of closing or conducting the supplementary gas passage, thereby improving the compression stability and reducing or isolating the fit clearance to effectively prevent gas leakage and backflow from the fit clearance, thereby improving the compression efficiency and making the compressor run stably and efficiently.

[0007] In order to achieve the second purpose of the present application, the present application provides a compressor with the above-mentioned cylinder assembly.

[0008] To achieve the third object of the present application, the present application provides a heat exchange system having the compressor.

[0009] To achieve the fourth object of the present application, the present application provides a valve structure capable of forming two-layer closing ability to improve the working stability and reliability of the supply channel closing or conducting, thereby improving the closing stability and reducing or isolating the fitting gap to effectively prevent the medium from leaking or flowing backward from the fitting gap, thereby improving the medium supply efficiency.

[0010] To achieve the first object of the present application, the present application provides a cylinder assembly comprising a cylinder and a valve structure, the cylinder being provided with a compression cavity in the axial direction thereof, and the cylinder being provided with a charge passage in the radial direction thereof, the charge passage comprising a first passage section, a second passage section and a third passage section connected in sequence, the first passage section being away from the intake port of the second passage section for communicating with a charge device, the hole diameter of the second passage section being greater than the hole diameters of the first passage section and the third passage section respectively, the third passage section being in communication with the compression cavity, the valve structure being located in the second passage section, the valve structure comprising an enthalpy-increasing valve core, a linkage rod, a valve plate and a limiting plate, the enthalpy-increasing valve core being movably located in the limiting end of the second passage section close to the first passage section in the axial direction of the second passage section, the limiting plate being located at the stop end of the second passage section close to the third passage section and forming a limiting groove between the stop end of the second passage section and the limiting plate, and the limiting plate being provided with a conducting hole corresponding to the third passage section, the two ends of the linkage rod being hingedly connected between the enthalpy-increasing valve core and the valve plate, the valve plate being slidably located in the limiting groove, and the linkage rod being outwardly inclined from the enthalpy-increasing valve core towards the third passage section; when the charge passage is in a closed state, the blocking end surface of the enthalpy-increasing valve core moves to abut against the limiting end surface of the second passage section to close the first passage section, and the valve plate slides towards the third passage section to cover and close the third passage section; when the charge passage is in an open state, the blocking end surface of the enthalpy-increasing valve core moves away from the limiting end surface of the second passage section to open the first passage section, and the valve plate slides away from the third passage section to open the third passage section.

[0011] From the above scheme, when the pressure of the compressed gas in the compression chamber of the cylinder is less than the pressure of the supplemental gas supplied by the air supplementing device into the first passage of the air supplementing passage, the supplemental gas in the first passage pushes the enthalpy-increasing valve core to move away from the first passage in the axial direction of the second passage, so that the blocking end surface of the enthalpy-increasing valve core moves away from the limiting end surface of the second passage to open the first passage, and since the two ends of the linkage lever are respectively hinged between the enthalpy-increasing valve core and the valve plate, and the linkage lever is outwardly inclined from the enthalpy-increasing valve core towards the third passage, the enthalpy-increasing valve core exerts pressure on the linkage lever during the movement of the enthalpy-increasing valve core away from the first passage in the axial direction of the second passage, so that the hinged end of the linkage lever slides outwardly, synchronously forcing the valve plate to slide away from the third passage to open the third passage, so that the air supplementing passage is in an open state. Since the enthalpy-increasing valve core moves in the axial direction of the second passage and is located at the limiting end of the second passage close to the first passage, there is a first gap between the outer periphery of the enthalpy-increasing valve core and the peripheral wall of the second passage, and the two ends of the linkage lever are respectively hinged between the enthalpy-increasing valve core and the valve plate, so that the limiting plate has a second gap in the axial direction of the second passage between the enthalpy-increasing valve core, which communicates with the first gap, so that the supplemental gas in the first passage can enter the second passage, and in turn pass through the first gap, the second gap, the through hole of the limiting plate, and the third passage to enter the compression chamber of the cylinder, thereby supplementing the air in the compression chamber in real time to achieve the purpose of stable enthalpy increase for the compression chamber, thereby increasing the exhaust volume and realizing efficient heat exchange of the compressor, and better coping with low-temperature heating and high-temperature refrigeration working conditions.

[0012] When the pressure of the compressed gas in the compression chamber of the cylinder is greater than the pressure of the supplemental gas supplied by the air supplementing device into the first passage of the air supplementing passage, or when the air supplementing device is closed, the compressed gas in the compression chamber enters the second passage from the open third passage to push the enthalpy-increasing valve core to move towards the first passage in the axial direction of the second passage, so that the blocking end surface of the enthalpy-increasing valve core moves to abut on the limiting end surface of the second passage to close the first passage, and during the movement of the enthalpy-increasing valve core towards the first passage in the axial direction of the second passage, the enthalpy-increasing valve core exerts a pulling force on the linkage lever, so that the hinged end of the linkage lever slides inwardly, synchronously forcing the valve plate to slide towards the third passage to cover and close the third passage, so that the air supplementing passage is in a closed state.

[0013] When the air supplement channel is in the closed state, the blocking end surface of the enthalpy increasing valve core moves to abut against the limiting end surface of the second through section to close the first through section, and the valve plate slides towards the third through section to cover and close the third through section, thereby forming two layers of closing ability for the air supplement channel, improving the working stability and reliability of closing the air supplement channel, thereby improving the compression stability, and since the valve plate covers and closes the third through section, the fitting gap of the enthalpy increasing valve core can be closed, so that the compression cavity of the cylinder is isolated from the fitting gap of the enthalpy increasing valve core, thereby reducing and isolating the fitting gap, effectively preventing gas from leaking and flowing backward from the fitting gap, thereby improving the compression efficiency, and making the operation of the compressor stable and efficient. Moreover, the limiting groove is formed between the limiting plate and the stop end of the second through section, and the valve plate is slidingly located in the limiting groove, so that the limiting groove can limit the movement of the valve plate in the axial direction of the second through section, so as to ensure that the valve plate can only slide in the axial direction perpendicular to the second through section, thereby improving the working stability and reliability of opening or closing the third through section.

[0014] Therefore, the cylinder assembly of the present application can form two layers of closing ability for the air supplement channel, improve the working stability and reliability of closing or conducting the air supplement channel, thereby improving the compression stability, and can reduce and isolate the fitting gap, effectively prevent gas from leaking and flowing backward from the fitting gap, thereby improving the compression efficiency, and making the operation of the compressor stable and efficient.

[0015] Further, the limiting plate is also provided with a positioning groove extending in the sliding direction of the valve plate, and the linkage rod is slidingly arranged in the positioning groove.

[0016] Further, the number of linkage rods, valve plates and positioning grooves is at least two, and the plurality of linkage rods are arranged in the circumferential direction of the third through section, one linkage rod being matched with one valve plate and one positioning groove.

[0017] Further, the blocking end surface of the enthalpy increasing valve core and the limiting end surface of the second through section are adapted to be inclined relative to the axial direction of the second through section, or the blocking end surface of the enthalpy increasing valve core and the limiting end surface of the second through section are adapted to be spherical, and / or the first end of the linkage rod is provided with a first ball head, the enthalpy increasing valve core is provided with a first hinge groove, and the first ball head is rotatably located in the first hinge groove, and / or the second end of the linkage rod is provided with a second ball head, the valve plate is provided with a second hinge groove, and the second ball head is rotatably located in the second hinge groove.

[0018] Further, the cylinder assembly further comprises a limiting seat, the cylinder is provided with a compensation hole in the radial direction of the cylinder, the compensation hole comprises a first hole section, a second hole section and a third hole section which are sequentially communicated, the first hole section has a larger hole diameter than the second hole section, and the first hole section penetrates through the outer circumferential wall of the cylinder away from the gas inlet end of the second hole section, the third hole section penetrates through the circumferential wall of the compression cavity away from the gas outlet end of the second hole section, the limiting seat is arranged in the first hole section and is adjacent to the second hole section, the first hole section is arranged on the limiting seat and is communicated with the first hole section, and the limiting seat is provided with a lead-through hole which is communicated with the first hole section and is adjacent to the end surface of the second hole section, the lead-through hole and the second hole section form the second hole section, and the limiting plate is arranged in the second hole section.

[0019] In order to achieve the second object of the present application, the present application provides a compressor comprising the cylinder assembly.

[0020] In order to achieve the third object of the present application, the present application provides a heat exchange system comprising the compressor.

[0021] In order to achieve the fourth object of the present application, the present application provides a valve structure arranged in a containing cavity, the supply end of the containing cavity is provided with a supply hole, the valve structure comprises a valve seat, a movable valve core, a linkage rod, a valve plate and a limiting plate, the valve seat is arranged in the containing cavity and is provided with a supply passage, the supply passage comprises a first hole section and a second hole section which are communicated, the first hole section away from the inlet hole of the second hole section is used for being communicated with the supply device, the hole diameter of the second hole section is larger than the hole diameters of the first hole section and the supply hole respectively, the limiting plate is arranged in the port of the second hole section close to the supply hole and forms a limiting groove between the supply end of the containing cavity and the limiting plate, the limiting plate is provided with a lead-through hole corresponding to the supply hole, the movable valve core is movably arranged in the limiting end of the second hole section close to the first hole section in the axial direction of the second hole section, the two ends of the linkage rod are hingedly connected between the movable valve core and the valve plate, the valve plate is slidably arranged in the limiting groove, and the linkage rod is outwardly inclined towards the supply hole; when the supply passage is in a closed state, the blocking end surface of the movable valve core is moved to abut on the limiting end surface of the second hole section to close the first hole section, and the valve plate is slid towards the supply hole to cover the supply hole; when the supply passage is in an open state, the blocking end surface of the movable valve core is moved away from the limiting end surface of the second hole section to open the first hole section, and the valve plate is slid away from the supply hole to open the supply hole.

[0022] From the above-mentioned solutions, it can be seen that the valve structure of the present application can form two layers of closing ability to improve the working stability and reliability of the supply passage in the closed or open state, thereby improving the closing stability and reducing or isolating the fitting gap to effectively prevent the medium from leaking or flowing backward from the fitting gap, thereby improving the medium supply efficiency.

[0023] Further, the limiting plate is provided with a positioning groove, which extends in the sliding direction of the valve plate, and the linkage rod is slidably arranged in the positioning groove.

[0024] Further, the linkage rod, the valve plate and the positioning groove are at least two in number, and the plurality of linkage rods are arranged in the circumferential direction of the supply hole, one linkage rod being matched with one valve plate and one positioning groove.

[0025] Further, the blocking end surface of the movable valve core and the limiting end surface of the second through section are adapted to be inclined relative to the axial direction of the second through section, or the blocking end surface of the movable valve core and the limiting end surface of the second through section are adapted to be spherical; and / or, the first end of the linkage rod is provided with a first ball head, and the movable valve core is provided with a first hinged groove, and the first ball head is rotatably arranged in the first hinged groove; and / or, the second end of the linkage rod is provided with a second ball head, and the valve plate is provided with a second hinged groove, and the second ball head is rotatably arranged in the second hinged groove. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a sectional view of the cylinder assembly embodiment of the present application.

[0027] Figure 2 is Figure 1 is an enlarged view at A.

[0028] Figure 3 is a first perspective view of the cooperation between the cylinder and the limiting seat in the cylinder assembly embodiment of the present application.

[0029] Figure 4 is Figure 3 is an enlarged view at B.

[0030] Figure 5 is a second perspective view of the cooperation between the cylinder and the limiting seat in the cylinder assembly embodiment of the present application.

[0031] Figure 6 is Figure 5 is an enlarged view at C.

[0032] Figure 7 is an exploded view of the cooperation between the limiting seat and the valve structure in the cylinder assembly embodiment of the present application.

[0033] Figure 8 is a sectional exploded view of the cooperation between the limiting seat and the valve structure in the cylinder assembly embodiment of the present application.

[0034] Figure 9 is a sectional view of the cooperation between the limiting seat and the valve structure in the cylinder assembly embodiment of the present application.

[0035] Figure 10 is a sectional view of the cylinder assembly embodiment of the present application, in which the air supplement channel is in an open state.

[0036] Figure 11 is a schematic view of the air supplement channel switching from the open state to the closed state in the cylinder assembly embodiment of the present application.

[0037] Figure 12 is a sectional view of the air supplement channel in the closed state in the cylinder assembly embodiment of the present application.

[0038] Figure 13 is a sectional view of the valve structure embodiment of the present application.

[0039] The present application is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0040] Cylinder assembly embodiment:

[0041] Referring to Figures 1 to 9 , the embodiment discloses a cylinder assembly 10, comprising a cylinder 11 and a valve structure 12, the cylinder 11 is provided with a compression cavity 111 through the cylinder 11 in the axial direction, the cylinder 11 is provided with an air supplement channel in the radial direction, the air supplement channel comprises a first channel section 112, a second channel section 113 and a third channel section 114 which are communicated in sequence, the first channel section 112 is away from the air inlet of the second channel section 113 for communication with the air supplement device, the hole diameter of the second channel section 113 is greater than the hole diameter of the first channel section 112 and the hole diameter of the third channel section 114 respectively, the third channel section 114 is communicated with the compression cavity 111, and the valve structure 12 is located in the second channel section 113.

[0042] Furthermore, the valve structure 12 of the embodiment comprises an enthalpy-increasing valve core 121, a linkage rod 122, a valve plate 123 and a limiting plate 124, the enthalpy-increasing valve core 121 is movably located in the second channel section 113 at the limiting end of the second channel section 113 close to the first channel section 112, the limiting plate 124 is located at the stop end of the second channel section 113 close to the third channel section 114 and forms a limiting groove 13 between the stop end of the second channel section 113 and the limiting plate 124, and the limiting plate 124 is provided with a through hole 1241 corresponding to the third channel section 114, the two ends of the linkage rod 122 are respectively hinged between the enthalpy-increasing valve core 121 and the valve plate 123, the valve plate 123 is slidably located in the limiting groove 13, and the linkage rod 122 is outwardly inclined from the enthalpy-increasing valve core 121 to the third channel section 114.

[0043] Moreover, when the gas supplement channel is in the closed state, the blocking end surface 1211 of the enthalpy-increasing valve core 121 moves to abut against the limiting end surface 1133 of the second through section 113 to close the first through section 112, and the valve plate 123 slides towards the third through section 114 to cover the third through section 114; when the gas supplement channel is in the open state, the blocking end surface 1211 of the enthalpy-increasing valve core 121 moves away from the limiting end surface 1133 of the second through section 113 to open the first through section 112, and the valve plate 123 slides away from the third through section 114 to uncover the third through section 114.

[0044] Referring to Figure 10 When the pressure of the compressed gas in the compression chamber 111 of the cylinder 11 is less than the pressure of the supplemental gas supplied by the gas supplement device into the first through section 112 of the gas supplement channel, the supplemental gas in the first through section 112 pushes the enthalpy-increasing valve core 121 to move away from the first through section 112 in the axial direction of the second through section 113, so that the blocking end surface 1211 of the enthalpy-increasing valve core 121 moves away from the limiting end surface 1133 of the second through section 113 to open the first through section 112, and since the two ends of the linkage rod 122 are respectively hinged between the enthalpy-increasing valve core 121 and the valve plate 123, and the linkage rod 122 is outwardly inclined from the enthalpy-increasing valve core 121 towards the third through section 114, the enthalpy-increasing valve core 121 exerts pressure on the linkage rod 122 during the movement of the enthalpy-increasing valve core 121 away from the first through section 112 in the axial direction of the second through section 113, so that the hinged end of the linkage rod 122 slides outwardly, synchronously forcing the valve plate 123 to slide away from the third through section 114 to uncover the third through section 114, so that the gas supplement channel is in the open state, and since the enthalpy-increasing valve core 121 moves in the axial direction of the second through section 113 and is located at the limiting end of the second through section 113 close to the first through section 112, the first gap 1134 is formed between the outer periphery of the enthalpy-increasing valve core 121 and the peripheral wall of the second through section 113, and the two ends of the linkage rod 122 are respectively hinged between the enthalpy-increasing valve core 121 and the valve plate 123, so that the second gap 1135 is formed between the limiting plate 124 and the enthalpy-increasing valve core 121 in the axial direction of the second through section 113, which is in communication with the first gap 1134, so that the supplemental gas in the first through section 112 can enter the second through section 113, and sequentially pass through the first gap 1134, the second gap 1135, the through hole 1241 of the limiting plate 124, and the third through section 114 to enter the compression chamber 111 of the cylinder 11, to supplement the gas in the compression chamber 111 in real time, to achieve the purpose of stabilizing the enthalpy of the compression chamber 111, so as to improve the exhaust volume and realize efficient heat exchange of the compressor, and better cope with the working conditions of low-temperature heating and high-temperature refrigeration.

[0045] Referring to Figure 11 and Figure 12When the pressure of the compressed gas in the compression chamber 111 of the cylinder 11 is greater than the pressure of the supplemental gas supplied by the supplemental gas device into the first passage section 112 of the supplemental gas passage, or when the supplemental gas device is closed, the compressed gas in the compression chamber 111 enters the second passage section 113 from the opened third passage section 114 to push the enthalpy-increasing valve core 121 to move in the axial direction of the second passage section 113 towards the first passage section 112, so that the blocking end surface 1211 of the enthalpy-increasing valve core 121 moves to abut against the limiting end surface 1133 of the second passage section 113 to close the first passage section 112, and during the movement of the enthalpy-increasing valve core 121 in the axial direction of the second passage section 113 towards the first passage section 112, the enthalpy-increasing valve core 121 exerts a pulling force on the linkage rod 122, so that the linkage rod 122 slides inwards in the hinged end of the valve plate 123, synchronously forcing the valve plate 123 to slide towards the third passage section 114 to cover and close the third passage section 114, so that the supplemental gas passage is in a closed state. When the supplemental gas passage is in a closed state in the embodiment, the blocking end surface 1211 of the enthalpy-increasing valve core 121 moves to abut against the limiting end surface 1133 of the second passage section 113 to close the first passage section 112, and the valve plate 123 slides towards the third passage section 114 to cover and close the third passage section 114, so as to form two layers of closing ability for the supplemental gas passage, to improve the working stability and reliability of closing the supplemental gas passage, thereby improving the compression stability, and since the valve plate 123 covers and closes the third passage section 114, the mating gap of the enthalpy-increasing valve core 121 can be closed, so as to isolate the mating gap, thereby effectively preventing gas from leaking and flowing back from the mating gap, and further improving the compression efficiency, so that the compressor operates stably and efficiently. Moreover, the limiting groove 13 is formed between the limiting plate 124 and the stop end of the second passage section 113, and the valve plate 123 is slidingly located in the limiting groove 13, so that the limiting groove 13 can limit the movement of the valve plate 123 in the axial direction of the second passage section 113, to ensure that the valve plate 123 can only slide perpendicular to the axial direction of the second passage section 113, to improve the working stability and reliability of opening or closing the third passage section 114.

[0046] Therefore, the cylinder 11 assembly 10 of the embodiment can form two layers of closing ability for the supplemental gas passage, to improve the working stability and reliability of closing or conducting the supplemental gas passage, thereby improving the compression stability, and can reduce and isolate the mating gap, to effectively prevent gas from leaking and flowing back from the mating gap, and further improve the compression efficiency, so that the compressor operates stably and efficiently.

[0047] In combination Figures 7 to 9The limiting plate 124 of the embodiment further has a positioning groove 1242 extending in the sliding direction of the valve plate 123. The linkage rod 122 is slidably arranged in the positioning groove 1242. The positioning groove 1242 can guide and limit the outward and inward sliding of the linkage rod 122, thereby improving the working stability and precision of the linkage rod 122.

[0048] To improve the switching sensitivity of the valve structure 12, the blocking end surface 1211 of the supercharging valve core 121 and the limiting end surface 1133 of the second through segment 113 are adapted to be inclined to the axial direction of the second through segment 113, or the blocking end surface 1211 of the supercharging valve core 121 and the limiting end surface 1133 of the second through segment 113 are adapted to be spherical. When the adapted surface is an inclined surface or a spherical surface, the moving stroke of the supercharging valve core 121 is relatively short and the first through segment 112 can be closed or opened, thereby improving the switching sensitivity of the supercharging valve core 121.

[0049] Specifically, the number of the linkage rod 122, the valve plate 123 and the positioning groove 1242 is at least two. The plurality of linkage rods 122 are arranged in the circumferential direction of the third through segment 114, and one linkage rod 122 is adapted to one valve plate 123 and one positioning groove 1242. Therefore, when the air supplement channel is in a closed state, the plurality of valve plates 123 are synchronously slid towards the third through segment 114 to a state of close contact with each other to cover and close the third through segment 114; when the air supplement channel is in an open state, the plurality of valve plates 123 are synchronously slid away from the third through segment 114 to a state of separation to be separated from the third through segment 114 to be opened, thereby achieving a higher efficiency of compressed exhaust.

[0050] To ensure that the linkage rod 122 hinged between the supercharging valve core 121 and the valve plate 123 can stably and reliably drive the valve plate 123 to realize outward and inward sliding, the first inclined angle θ of the linkage rod 122 relative to the axial direction of the second through segment 113 is between 5° and 15° when the air supplement channel is in a closed state, and the second inclined angle β of the linkage rod 122 relative to the axial direction of the second through segment 113 is between 20° and 35° when the air supplement channel is in an open state.

[0051] Further, the first end of the linkage rod 122 is provided with a first ball head 1221, and the supercharging valve core 121 is provided with a first hinge groove 1212. The first ball head 1221 is rotatably arranged in the first hinge groove 1212, so as to form a multi-directional rotary hinge between the first end of the linkage rod 122 and the supercharging valve core 121. In addition, the second end of the linkage rod 122 is provided with a second ball head 1222, and the valve plate 123 is provided with a second hinge groove 1231. The second ball head 1222 is rotatably arranged in the second hinge groove 1231, so as to form a multi-directional rotary hinge between the second end of the linkage rod 122 and the valve plate 123.

[0052] In combination Figures 3 to 6 , the cylinder 11 of the assembly 10 is provided with a compensation hole in the radial direction thereof, the compensation hole comprises a first hole section 116, a second hole section 1132 and a third hole section 114 which are sequentially communicated, the hole diameter of the first hole section 116 is larger than that of the second hole section 1132, the first hole section 116 penetrates the outer peripheral wall of the cylinder 11 away from the gas inlet end of the second hole section 1132 and is used for being communicated with the compensation device, the third hole section 114 penetrates the peripheral wall of the compression cavity 111 away from the gas outlet end of the second hole section 1132, and the limiting seat 115 is arranged in the first hole section 116 and is adjacent to the second hole section 1132, the first hole section 112 is arranged on the limiting seat 115 and is communicated with the first hole section 116, the limiting seat 115 is adjacent to the end face of the second hole section 1132 and is provided with a lead-through hole 1131 which is communicated with the first hole section 112, the lead-through hole 1131 and the second hole section 1132 form the second hole section 113, and the limiting plate 124 is located in the second hole section 1132. Specifically, the limiting seat 115 and the first hole section 116 are threadedly connected to facilitate assembly.

[0053] Valve structure embodiment:

[0054] Referring to Figure 13 , the valve structure 20 is arranged in the accommodating cavity 31, and the supply end of the accommodating cavity 31 is provided with a supply hole 32.

[0055] In this embodiment, the valve structure 20 comprises a valve seat 21, a moving valve core 22, a linkage rod 23, a valve plate 24 and a limiting plate 25, the valve seat 21 is arranged in the accommodating cavity 31 and is provided with a supply passage, the supply passage comprises a first passage section 211 and a second passage section 212 which are communicated, the first passage section 211 away from the inlet hole of the second passage section 212 is used for being communicated with the supply device, the hole diameter of the second passage section 212 is respectively larger than the hole diameter of the first passage section 211 and the hole diameter of the supply hole 32, the limiting plate 25 is arranged in the port of the second passage section 212 close to the supply hole 32 and forms a limiting groove 26 between the supply end of the accommodating cavity 31 and the limiting plate 25, and the limiting plate 25 is provided with a lead-through hole 251 corresponding to the supply hole 32.

[0056] In addition, the moving valve core 22 is movably arranged in the limiting end of the second passage section 212 close to the first passage section 211 in the axial direction of the second passage section 212, the two ends of the linkage rod 23 are respectively hinged between the moving valve core 22 and the valve plate 24, the valve plate 24 is slidably arranged in the limiting groove 26, and the linkage rod 23 is outwardly inclinedly arranged towards the supply hole 32.

[0057] Further, when the supply passage is in the closed state, the blocking end face 221 of the moving valve core 22 moves to abut against the limiting end face 2121 of the second through section 212 to close the first through section 211, and the valve plate 24 slides toward the supply hole 32 to cover the supply hole 32; when the supply passage is in the open state, the blocking end face 221 of the moving valve core 22 moves away from the limiting end face 2121 of the second through section 212 to open the first through section 211, and the valve plate 24 slides away from the supply hole 32 to open the supply hole 32.

[0058] When the medium pressure on the side of the supply hole 32 is less than the medium pressure supplied by the supply device into the first through section 211 of the supply passage, the high-pressure medium in the first through section 211 pushes the moving valve core 22 to move away from the first through section 211 in the axial direction of the second through section 212, so that the blocking end face 221 of the moving valve core 22 moves away from the limiting end face 2121 of the second through section 212 to open the first through section 211, and since the two ends of the linkage lever 23 are respectively hinged between the moving valve core 22 and the valve plate 24, and the linkage lever 23 is automatically inclined outwardly toward the supply hole 32, the moving valve core 22 exerts pressure on the linkage lever 23 during the movement of the moving valve core 22 away from the first through section 211 in the axial direction of the second through section 212, so that the hinged end of the linkage lever 23 slides outwardly, synchronously forcing the valve plate 24 to slide away from the supply hole 32 to open the supply hole 32, so that the supply passage is in the open state, since the moving valve core 22 moves in the axial direction of the second through section 212 to the limiting end of the second through section 212 close to the first through section 211, there is a first gap between the outer periphery of the moving valve core 22 and the peripheral wall of the second through section 212, and the two ends of the linkage lever 23 are respectively hinged between the moving valve core 22 and the valve plate 24, so that the limiting plate 25 has a second gap in the axial direction of the second through section 212 between the moving valve core 22, which is communicated with the first gap, so that the medium in the first through section 211 can enter the second through section 212, and in turn pass through the first gap, the second gap, the through hole 251 of the limiting plate 25, the supply hole 32 to enter the medium cavity on the side of the supply hole 32, and supply the medium in the medium cavity in real time.

[0059] When the medium pressure on the side of the supply hole 32 is greater than the medium pressure supplied by the supply device into the first passage section 211 of the supply passage, or when the supply device is closed, the high-pressure medium in the medium cavity on the side of the supply hole 32 enters the second passage section 212 from the opened supply hole 32 to push the movable valve core 22 to move in the axial direction of the second passage section 212 towards the first passage section 211, so that the blocking end surface 221 of the movable valve core 22 moves to abut against the limiting end surface 2121 of the second passage section 212 to close the first passage section 211, and during the movement of the movable valve core 22 in the axial direction of the second passage section 212 towards the first passage section 211, the movable valve core 22 exerts a pulling force on the linkage rod 23, so that the linkage rod 23 slides inwards in the hinged end of the valve plate 24, synchronously forcing the valve plate 24 to slide towards the supply hole 32 to cover and close the supply hole 32, so that the supply passage is in a closed state. When the supply passage of the present embodiment is in a closed state, the blocking end surface 221 of the movable valve core 22 moves to abut against the limiting end surface 2121 of the second passage section 212 to close the first passage section 211, and the valve plate 24 slides towards the supply hole 32 to cover and close the supply hole 32, thereby forming a two-layer closing capability for the supply passage, to improve the working stability and reliability of closing the supply passage, and since the valve plate 24 covers and closes the supply passage, the mating gap of the movable valve core 22 can be closed, so that the medium cavity on the side of the supply hole 32 is isolated from the mating gap of the movable valve core 22, thereby reducing and isolating the mating gap, to effectively prevent the medium from leaking and flowing backwards from the mating gap, thereby improving the medium supply efficiency. Furthermore, the limiting groove 26 is formed between the limiting plate 25 and the supply end of the accommodating cavity 31, and the valve plate 24 is slidingly located in the limiting groove 26, so that the limiting groove 26 can limit the movement of the valve plate 24 in the axial direction of the second passage section 212, to ensure that the valve plate 24 can only slide perpendicular to the axial direction of the second passage section 212, to improve the working stability and reliability of opening or closing the supply hole 32.

[0060] Therefore, the valve structure 20 of the present embodiment can form a two-layer closing capability, to improve the working stability and reliability of closing or conducting the supply passage, thereby improving the closing stability, and can reduce and isolate the mating gap, to effectively prevent the medium from leaking and flowing backwards from the mating gap, thereby improving the medium supply efficiency. Specifically, the supply device can supply gaseous medium or liquid medium to the supply passage.

[0061] In order to improve the working stability and precision of the linkage rod 23, the limiting plate 25 of the present embodiment is further provided with a positioning groove 252, which extends in the sliding direction of the valve plate 24, and the linkage rod 23 slidingly penetrates the positioning groove 252, so that the positioning groove 252 can guide and limit the outward expansion and inward contraction sliding of the linkage rod 23.

[0062] In order to improve the opening and closing sensitivity of the valve structure 20, the blocking end surface 221 of the movable valve core 22 and the limiting end surface 2121 of the second through section 212 are adapted to be arranged in an axial inclination relative to the second through section 212, or the blocking end surface 221 of the movable valve core and the limiting end surface 2121 of the second through section 212 are adapted to be arranged in a spherical surface. When the adapted surface is an inclined surface or a spherical surface, the moving stroke of the movable valve core is relatively short and the first through section 211 can be closed or opened, thereby improving the opening and closing sensitivity of the movable valve core.

[0063] Specifically, the number of the linkage rods 23, the valve plates 24 and the positioning grooves 252 is at least two, and the plurality of linkage rods 23 are arranged in the circumferential direction of the supply hole 32, one linkage rod 23 is adapted to one valve plate 24 and one positioning groove 252. Therefore, when the supply passage is in a closed state, the plurality of valve plates 24 are synchronously slid towards the supply hole 32 to a mutual close contact state to cover and close the supply hole 32; when the supply passage is in an open state, the plurality of valve plates 24 are synchronously slid away from the supply hole 32 to a separated state to be separated from the open supply hole 32, so as to realize a higher efficiency of the supply medium.

[0064] The first end of the linkage rod 23 is provided with a first ball head 231, and the movable valve core 22 is provided with a first hinged groove, and the first ball head 231 is rotatably arranged in the first hinged groove, so as to form a multi-directional rotary hinge between the first end of the linkage rod 23 and the movable valve core 22. Moreover, the second end of the linkage rod 23 is provided with a second ball head 232, and the valve plate 24 is provided with a second hinged groove, and the second ball head 232 is rotatably arranged in the second hinged groove, so as to form a multi-directional rotary hinge between the second end of the linkage rod 23 and the valve plate 24.

[0065] The above embodiments are only preferred examples of the present application, and are not intended to limit the scope of the present application, so that equivalent changes or modifications made in accordance with the structure, features and principles of the present application patent application scope should be included in the present application patent application scope.

Claims

1. A cylinder assembly comprising a cylinder and a valve structure, the cylinder being provided with a compression chamber in an axial direction thereof and a charge passage in a radial direction thereof, characterized in that: the charge passage comprises a first passage section, a second passage section and a third passage section in sequence, the first passage section being away from an intake port of the second passage section for communicating with a charge device, the second passage section having a bore diameter greater than that of the first passage section and that of the third passage section respectively, the third passage section communicating with the compression chamber, the valve structure being located in the second passage section; the valve structure comprises an enthalpy-increasing valve core, a linkage rod, a valve plate and a limiting plate, the enthalpy-increasing valve core being movably located in the second passage section at a limiting end of the second passage section close to the first passage section, the limiting plate being located at a stop end of the second passage section close to the third passage section and forming a limiting groove between the stop end of the second passage section and the limiting plate, the limiting plate being provided with a through hole corresponding to the third passage section, the linkage rod being hingedly connected between the enthalpy-increasing valve core and the valve plate at two ends thereof, the valve plate being slidably located in the limiting groove, the linkage rod being outwardly inclined from the enthalpy-increasing valve core towards the third passage section; when the charge passage is in a closed state, a blocking end surface of the enthalpy-increasing valve core is moved to abut against a limiting end surface of the second passage section to close the first passage section, and the valve plate is slid towards the third passage section to cover the third passage section; when the charge passage is in an open state, the blocking end surface of the enthalpy-increasing valve core is moved away from the limiting end surface of the second passage section to open the first passage section, and the valve plate is slid away from the third passage section to open the third passage section.

2. The cylinder assembly according to claim 1, characterized in that: the limiting plate is further provided with a positioning groove extending in a sliding direction of the valve plate, and the linkage rod is slidably arranged in the positioning groove.

3. The cylinder assembly according to claim 2, characterized in that: the number of the linkage rod, the valve plate and the positioning groove is at least two, a plurality of linkage rods are arranged in a circumferential direction of the third passage section, and one linkage rod is matched with one valve plate and one positioning groove.

4. The cylinder assembly according to claim 1, characterized in that: the blocking end surface of the enthalpy-increasing valve core and the limiting end surface of the second passage section are adapted to be inclined with respect to the axial direction of the second passage section, or the blocking end surface of the enthalpy-increasing valve core and the limiting end surface of the second passage section are adapted to be spherically arranged; and / or, the first end of the linkage rod is provided with a first ball head, the enthalpy-increasing valve core is provided with a first hinged groove, and the first ball head is rotatably arranged in the first hinged groove; and / or, the second end of the linkage rod is provided with a second ball head, the valve plate is provided with a second hinged groove, and the second ball head is rotatably arranged in the second hinged groove.

5. The cylinder assembly according to any one of claims 1 to 4, characterized in that: ​ ​ ​ ​ The cylinder assembly further comprises a limiting seat, the cylinder is provided with a compensation hole in the radial direction of the cylinder, the compensation hole comprises a first hole section, a second hole section and a third hole section which are sequentially communicated, the first hole section has a larger hole diameter than the second hole section, and the first hole section is provided through the peripheral wall of the cylinder away from the gas inlet end of the second hole section, and the third hole section is provided through the peripheral wall of the compression cavity away from the gas outlet end of the second hole section; The limiting seat is arranged in the first hole section and is adjacent to the second hole section, the first hole section is arranged on the limiting seat and is communicated with the first hole section, and the limiting seat is provided with a lead-through hole communicated with the first hole section at the end face adjacent to the second hole section, the lead-through hole and the second hole section form the second hole section, and the limiting plate is located in the second hole section.

6. A compressor comprising a cylinder assembly, characterized in that: The cylinder assembly is the cylinder assembly according to any one of claims 1 to 5.

7. A heat exchange system comprising a compressor, characterized in that: The compressor is the compressor according to claim 6.

8. A valve structure arranged in a receiving cavity, the receiving cavity is provided with a supply hole at the supply end, characterized in that: The valve structure comprises a valve seat, a movable valve core, a linkage rod, a valve plate and a limiting plate, the valve seat is arranged in the receiving cavity and is provided with a supply passage, the supply passage comprises a first passage section and a second passage section which are communicated, the first passage section is away from the inlet hole of the second passage section and is used for communicating with a supply device, the second passage section has a larger hole diameter than the hole diameter of the first passage section and the hole diameter of the supply hole, the limiting plate is arranged in the port of the second passage section close to the supply hole and forms a limiting groove between the supply end of the receiving cavity and the limiting plate, and the limiting plate is provided with a lead-through hole corresponding to the supply hole; The movable valve core is movably arranged in the limiting end of the second passage section close to the first passage section in the axial direction of the second passage section, the two ends of the linkage rod are hingedly connected between the movable valve core and the valve plate, the valve plate is slidably arranged in the limiting groove, and the linkage rod is outwardly inclined from the movable valve core to the supply hole; When the supply passage is in a closed state, the blocking end face of the movable valve core moves and abuts on the limiting end face of the second passage section to close the first passage section, and the valve plate slides towards the supply hole to cover the supply hole; when the supply passage is in an open state, the blocking end face of the movable valve core moves away from the limiting end face of the second passage section to open the first passage section, and the valve plate slides away from the supply hole to open the supply hole.

9. The valve structure according to claim 8, characterized in that: The limiting plate is further provided with a positioning groove, the positioning groove extends in the sliding direction of the valve plate, and the linkage rod is slidably arranged in the positioning groove.

10. The valve structure according to claim 9, characterized in that: The number of the linkage rods, the valve plates and the positioning grooves is at least two, and the plurality of linkage rods are arranged in the circumferential direction of the supply hole, one linkage rod is matched with one valve plate and one positioning groove.

11. The valve structure according to any one of claims 8 to 10, characterized in that: The blocking end face of the moving valve core and the limiting end face of the second through section are adapted to be inclined to the axial direction of the second through section, or the blocking end face of the moving valve core and the limiting end face of the second through section are adapted to be spherically arranged; And / or, the first end of the linkage rod is provided with a first ball head, the moving valve core is provided with a first hinge groove, and the first ball head is rotatably located in the first hinge groove; And / or, the second end of the linkage rod is provided with a second ball head, the valve plate is provided with a second hinge groove, and the second ball head is rotatably located in the second hinge groove.

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