Solenoid valve, compression device, refrigeration cycle system and air conditioner having the same

Abstract

The present invention discloses a solenoid valve and a compression device, a refrigeration cycle system and an air conditioner having the same, wherein the compression device comprises: a housing, a closed accommodating chamber is defined in the housing, and the housing has a pressurizing port connected to the accommodating chamber; a valve seat plate, the valve seat plate is arranged in the housing, and the valve seat plate has a first high-low pressure air hole, a second high-low pressure air hole and a low pressure air hole; a first sliding valve and a second sliding valve, the first sliding valve can be moved relative to the valve seat plate to select whether to communicate with the first high-low pressure air hole, the second sliding valve can be moved relative to the valve seat plate to select whether to communicate with the second high-low pressure air hole, and the first sliding valve and the second sliding valve are always connected through the low pressure air hole; a first driving member is arranged in the housing and used to drive the first sliding valve to move relative to the valve seat plate, and a second driving member is arranged in the housing and used to drive the second sliding valve to move relative to the valve seat plate. The solenoid valve according to the embodiment of the present invention has the advantages of low manufacturing cost and high reliability.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and in particular to a solenoid valve and a compression device, a refrigeration cycle system and an air conditioner having the same. Background Art

[0002] The solenoid valve used for the compressor in the related art usually has two output modes. If three or four output modes are to be achieved, two three-way valves or four-way valves are usually required. The number of parts is large, the size is large, and the diameter of the pipe port is also large. There are defects such as high cost and low reliability under conditions of frequent use. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a solenoid valve, which has low manufacturing cost and high reliability.

[0004] The present invention also provides a compression device, a refrigeration cycle system and an air conditioner having the solenoid valve.

[0005] The solenoid valve according to the first aspect of the present invention comprises: a shell, a closed accommodating chamber is defined in the shell, the shell has a pressurizing port connected to the accommodating chamber for pressurizing the accommodating chamber; a valve seat plate, the valve seat plate is arranged in the shell, the valve seat plate has a first high-low pressure air hole, a second high-low pressure air hole and a low pressure air hole; a first sliding valve and a second sliding valve, the first sliding valve is movable relative to the valve seat plate to select whether to communicate with the first high-low pressure air hole, the second sliding valve is movable relative to the valve seat plate to select whether to communicate with the second high-low pressure air hole, the first sliding valve and the second sliding valve are always connected through the low pressure air hole; a first driving member and a second driving member, the first driving member is arranged in the shell and used to drive the first sliding valve to move relative to the valve seat plate, and the second driving member is arranged in the shell and used to drive the second sliding valve to move relative to the valve seat plate.

[0006] The solenoid valve according to the embodiment of the present invention has the advantages of low manufacturing cost and high reliability.

[0007] In addition, the solenoid valve according to the above embodiment of the present invention may also have the following additional technical features:

[0008] According to some embodiments of the present invention, the first high- and low-pressure air holes and the first sliding valve are arranged on one of the two opposite side surfaces of the valve seat plate, the second high- and low-pressure air holes and the second sliding valve are arranged on the other of the two opposite side surfaces of the valve seat plate, and the low-pressure air hole passes through the two opposite side surfaces of the valve seat plate.

[0009] According to some embodiments of the present invention, a first closed cavity for communicating with the first high and low pressure air holes is constructed in the first sliding valve, and a second closed cavity for communicating with the second high and low pressure air holes is constructed in the second sliding valve, and the first closed cavity and the second closed cavity are always connected through the low pressure air hole.

[0010] According to some embodiments of the present invention, the solenoid valve further includes: a high-pressure input pipe, which is connected to the interior of the shell; a low-pressure input pipe, which extends into the shell and is connected to the low-pressure air hole; a first output pipe and a second output pipe, the first output pipe extends into the shell and is connected to the first high- and low-pressure air holes, and the second output pipe extends into the shell and is connected to the second high- and low-pressure air holes.

[0011] According to some embodiments of the present invention, the valve seat plate also has a first connecting hole connected to the first high and low pressure air holes, a second connecting hole connected to the second high and low pressure air holes, and a low pressure connecting hole connected to the low pressure air hole, the low pressure input pipe is connected to the low pressure connecting hole, the first output pipe is connected to the first connecting hole, and the second output pipe is connected to the second connecting hole.

[0012] According to some embodiments of the present invention, the axial direction of the first high and low pressure air holes, the axial direction of the second high and low pressure air holes and the axial direction of the low pressure air holes are parallel to each other, the axial direction of the first connecting hole is perpendicular to the axial direction of the first high and low pressure air holes, the axial direction of the second connecting hole is perpendicular to the axial direction of the second high and low pressure air holes, and the axial direction of the low pressure connecting hole is perpendicular to the axial direction of the low pressure air holes.

[0013] According to some embodiments of the present invention, the first connecting hole and the second connecting hole respectively penetrate one of the two opposite side surfaces of the valve seat plate, and the low-pressure connecting hole penetrates the other of the two opposite side surfaces of the valve seat plate; the first output pipe and the second output pipe pass through one of the two opposite side walls of the valve seat plate, and the low-pressure input pipe passes through the other of the two opposite side walls of the valve seat plate.

[0014] According to some embodiments of the present invention, the valve seat plate is located at the center of the housing in the length direction of the housing, and the moving directions of the first sliding valve and the second sliding valve are both parallel to the length direction of the housing.

[0015] According to some embodiments of the present invention, the first driving member is a first electromagnetic coil and independently drives the first sliding valve to move through the electromagnetic force generated when energized, and the second driving member is a second electromagnetic coil and independently drives the second sliding valve to move through the electromagnetic force generated when energized.

[0016] According to some embodiments of the present invention, when the first electromagnetic coil and the second electromagnetic coil are not energized, the first sliding valve is not connected to the first high and low pressure air holes; when the second electromagnetic coil is not energized, the second sliding valve is not connected to the second high and low pressure air holes.

[0017] According to some embodiments of the present invention, a first winding cavity is provided on the outer circumference of one end of the shell and a second winding cavity is provided on the outer circumference of the other end, the first electromagnetic coil is wound in the first winding cavity, and the second electromagnetic coil is wound in the second winding cavity.

[0018] According to some embodiments of the present invention, the solenoid valve also includes: a first fixed iron core and a second fixed iron core, the first fixed iron core and the second fixed iron core are arranged in the shell, the first electromagnetic coil is surrounded by the outside of the first fixed iron core, and the second electromagnetic coil is surrounded by the outside of the second fixed iron core; a first plunger and a second plunger, the first plunger is arranged in the shell and is movable relative to the first fixed iron core, the second plunger is arranged in the shell and is movable relative to the second fixed iron core, the first plunger is connected to the first sliding valve, and the second plunger is connected to the second sliding valve.

[0019] According to some embodiments of the present invention, the solenoid valve further includes: a first supporting plate, through which the first plunger is connected to the first sliding valve; and a second supporting plate, through which the second plunger is connected to the second sliding valve.

[0020] According to some embodiments of the present invention, the solenoid valve also includes: a first coil spring, one end of which is connected to the first fixed iron core and the other end is connected to the first plunger; and a second coil spring, one end of which is connected to the second fixed iron core and the other end is connected to the second plunger.

[0021] According to some embodiments of the present invention, the solenoid valve is a direct-acting solenoid valve.

[0022] The compression device proposed in the embodiment of the second aspect of the present invention includes: a compressor, the compressor includes a compressor housing, the compressor housing is provided with at least two pressure signal interfaces, and the variable capacity operation of the compressor can be controlled by controlling the pressure signal interfaces; according to the solenoid valve of the embodiment of the first aspect of the present invention, the first high and low pressure air holes and the second high and low pressure air holes are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

[0023] The compression device according to the second embodiment of the present invention can realize arbitrary switching of various high-pressure and low-pressure combination input modes by utilizing the solenoid valve according to the first embodiment of the present invention, with low manufacturing cost and low operating power.

[0024] According to some embodiments of the present invention, the compressor further includes: a first cylinder, wherein the first cylinder is provided with a first piston and a first vane, the first piston is rollable in the first cylinder, the first vane often stops at the first piston and can reciprocate with the first piston, and the end of the first vane forms a first vane cavity; a second cylinder, wherein the second cylinder is provided with a second piston and a second vane, the second piston is rollable in the second cylinder, the second vane often stops at the second piston and can reciprocate with the second piston, and the end of the second vane forms a second vane cavity; and a middle partition, wherein the middle partition is provided between the first cylinder and the second cylinder.

[0025] According to some embodiments of the present invention, the second cylinder is further provided with a third sliding plate and a sliding plate spring, and the third sliding plate is pressed by the sliding plate spring so that the third sliding plate always stops against the second piston.

[0026] According to some embodiments of the present invention, the first sliding plate cavity and the second sliding plate cavity are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

[0027] According to some embodiments of the present invention, the compressor also includes: a third cylinder, the third cylinder is provided with a third piston and a third vane, the third piston can roll in the third cylinder, the third vane often stops at the third piston and can reciprocate with the third piston, and the end of the third vane forms a third vane cavity.

[0028] According to some embodiments of the present invention, there are two compressors, and the first vane cavities of the two compressors are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

[0029] Invention The refrigeration cycle system according to the third embodiment of the present invention comprises a condenser, an evaporator and a compression device according to the second embodiment of the present invention which are sequentially connected to form a refrigerant circuit.

[0030] The refrigeration cycle system according to the third aspect of the present invention has the advantages of good refrigeration effect, short start-up time and low energy consumption by utilizing the compression device according to the second aspect of the present invention.

[0031] An air conditioner according to a fourth embodiment of the present invention includes a refrigeration cycle system according to the third embodiment of the present invention.

[0032] The air conditioner according to the fourth aspect of the present invention, by utilizing the refrigeration cycle system according to the third aspect of the present invention, has the advantages of good refrigeration effect, short start-up time and high energy efficiency ratio.

[0033] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 is a cross-sectional view of a solenoid valve according to an embodiment of the present invention;

[0036] Figure 2 is a cross-sectional view of a valve seat plate of a solenoid valve according to an embodiment of the present invention;

[0037] Figure 3 is a cross-sectional view of a solenoid valve according to an embodiment of the present invention;

[0038] Figure 4 is a schematic diagram of the cooperation between the valve seat plate of the solenoid valve and the first sliding valve and the second sliding valve according to an embodiment of the present invention;

[0039] Figure 5 is a schematic diagram of a solenoid valve in a working state of mode 1 according to an embodiment of the present invention;

[0040] Figure 6 is a schematic diagram of a solenoid valve in a working state of mode 2 according to an embodiment of the present invention;

[0041] Figure 7 is a schematic diagram of a solenoid valve in a working state of mode three according to an embodiment of the present invention;

[0042] Figure 8 is a schematic diagram of a solenoid valve in a working state of mode 4 according to an embodiment of the present invention;

[0043] Fig. 9 is a cross-sectional view of a compression device according to some embodiments of the present invention;

[0044] Fig.10 is a cross-sectional view of a compression device according to some other embodiments of the present invention;

[0045] Fig.11 are cross-sectional views of compression devices according to still other embodiments of the present invention.

[0046] Reference numerals:

[0047] Solenoid valve 1;

[0048] Housing 2; first driving member 3a; second driving member 3b; first fixed iron core 4a; second fixed iron core 4b; first plunger 5a; second plunger 5b; first coil spring 6a; second coil spring 6b; first end plate 7a; second end plate 7b; first stopper 9a; second stopper 9b;

[0049] Valve seat plate 10; first high and low pressure air holes 10a; second high and low pressure air holes 10b; low pressure air holes 10c; first communication holes 11a; second communication holes 11b; low pressure communication holes 11c;

[0050] High-pressure input pipe 13; pressurizing hole 13a; low-pressure input pipe 14; first output pipe 15a; second output pipe 15b;

[0051] First sliding valve 20a; second sliding valve 20b; first closed chamber 20c; first supporting plate 21a; second supporting plate 21b;

[0052] Compression device 30; first cylinder 31; second cylinder 32; second air intake pipe 32a; third cylinder 33; first connecting pipe 33a; second connecting pipe 33b; first slide chamber 34a; second slide chamber 34b; first compression mechanism 35A; second compression mechanism 35B; motor 36; middle partition 38; first middle partition 38a; second middle partition 38b;

[0053] Compressor housing 40; high pressure pipe 40a; first piston 41a; second piston 41b; first sliding vane 44a; second sliding vane 44b; third sliding vane 44c; sliding vane spring 45; lubricating oil 46; liquid reservoir 48;

[0054] A first compressor 50a; a second compressor 50b; a first exhaust pipe 51a; a second exhaust pipe 51b;

[0055] Four-way valve 60 ; indoor heat exchanger 61 ; expansion device 62 ; outdoor heat exchanger 63 . DETAILED DESCRIPTION

[0056] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0057] In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0058] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] Reference below Figure 1-Figure 11 The solenoid valve 1 according to the first embodiment of the present invention is described. It should be noted that Pd in ​​the drawings represents a high pressure state, and Ps represents a low pressure state.

[0060] like Figure 1 The solenoid valve 1 shown is a cross-sectional view. The solenoid valve 1 according to the embodiment of the present invention comprises: a housing 2, a valve seat plate 10, a first sliding valve 20a, a second sliding valve 20b, a first driving member 3a and a second driving member 3b.

[0061] Among them, a closed accommodating chamber is defined in the shell 2, and the shell 2 has a pressurizing port connected to the accommodating chamber for pressurizing the accommodating chamber. The valve seat plate 10 is arranged in the shell 2, and the valve seat plate 10 has a first high and low pressure air hole 10a, a second high and low pressure air hole 10b and a low pressure air hole 10c, a first sliding valve 20a and a second sliding valve 20b. The first sliding valve 20a can be moved relative to the valve seat plate 10 to select whether to communicate with the first high and low pressure air hole 10a, and the second sliding valve 20b can be moved relative to the valve seat plate 10 to select whether to communicate with the second high and low pressure air hole 10b. The first sliding valve 20a and the second sliding valve 20b are always connected through the low pressure air hole 10c. The first driving member 3a is arranged in the shell 2 and is used to drive the first sliding valve 20a to move relative to the valve seat plate 10. The second driving member 3b is arranged in the shell 2 and is used to drive the second sliding valve 20b to move relative to the valve seat plate 10.

[0062] It is worth noting that the first driving member 3a and the second driving member 3b can directly drive the first sliding valve 20a and the second sliding valve 20b to move relative to the valve seat plate 10, or can indirectly drive the first sliding valve 20a and the second sliding valve 20b to move relative to the valve seat plate 10. For example, Figure 1 In the illustrated embodiment, the first sliding valve 20a is connected to the first plunger 5a, the first driving member 3a drives the first plunger 5a to drive the first sliding valve 20a to move, the second sliding valve 20b is connected to the second plunger 5b, and the second driving member 3b drives the second plunger 5b to drive the second sliding valve 20b to move.

[0063] Specifically, high-pressure gas is delivered to the accommodating chamber through the boost port to maintain a higher air pressure in the accommodating chamber. The valve seat plate 10 is arranged in the accommodating chamber and has a first high- and low-pressure air hole 10a, a second high- and low-pressure air hole 10b and a low-pressure air hole 10c. The low-pressure air hole 10c is always connected to the first sliding valve 20a and the second sliding valve 20b. That is to say, the low-pressure air hole 10c and the first sliding valve 20a and the second sliding valve 20b form a space that is closed relative to the accommodating chamber, and the air pressure in the low-pressure air hole 10c is lower than the air pressure of the accommodating chamber. It should be noted that, in the embodiment of the present invention, the first sliding valve 20a moves relative to the valve seat plate 10 to select whether to communicate with the first high and low pressure air hole 10a, so as to adjust the air pressure in the first high and low pressure air hole 10a, and the second sliding valve 20b moves relative to the valve seat plate 10 to select whether to communicate with the second high and low pressure air hole 10b, so as to adjust the air pressure in the second high and low pressure air hole 10b. Both the first high and low pressure air hole 10a and the second high and low pressure air hole 10b are connected to the outside to output high pressure or low pressure.

[0064] For example, when the first sliding valve 20a slides to a position communicating with the first high-low pressure air hole 10a, Figure 1 As shown, at this time, the first high-low pressure air hole 10a is connected with the low-pressure air hole 10c through the first sliding valve 20a and is isolated from the accommodating chamber, and the first high-low pressure air hole 10a is in a low-pressure state; when the first sliding valve 20a slides to a position where it is not connected with the first high-low pressure air hole 10a, as shown in FIG. Figure 5 As shown, when the first sliding valve 20a slides to a position isolated from the first high-low pressure air hole 10a, the first high-low pressure air hole 10a is connected to the accommodating cavity, and at this time, the first high-low pressure air hole 10a is in a high pressure state.

[0065] When the second sliding valve 20b slides to the position communicating with the second high and low pressure air holes 10b, Figure 6 As shown, at this time, the second high-low pressure pore 10b is connected to the low-pressure pore 10c through the second sliding valve 20b and is isolated from the accommodating chamber, and the second high-low pressure pore 10b is in a low-pressure state; when the second sliding valve 20b slides to a position where it is not connected to the second high-low pressure pore 10b, as shown Figure 1As shown, when the second sliding valve 20b slides to a position isolated from the second high-low pressure air hole 10b, the second high-low pressure air hole 10b is connected to the accommodating cavity, and the second high-low pressure air hole 10b is in a high pressure state.

[0066] Thus, various output modes can be formed according to different combinations of the high pressure state or low pressure state of the first high and low pressure air hole 10a and the high pressure state or low pressure state of the second high and low pressure air hole 10b, and the solenoid valve 1 can be switched to any output mode when working. Figure 5 In the illustrated mode 1, the first high-low pressure vent 10a outputs high pressure, and the second high-low pressure vent 10b outputs high pressure; Figure 6 In the second mode shown, the first high-low pressure vent 10a outputs high pressure, and the second high-low pressure vent 10b outputs low pressure; Figure 7 In the third mode shown, the first high-low pressure vent 10a outputs low pressure, and the second high-low pressure vent 10b outputs high pressure; Figure 8 In the illustrated mode 4, the first high-low pressure pore 10a outputs low pressure, and the second high-low pressure pore 10b outputs low pressure. It is worth noting that the four output modes of the combination of the first high-low pressure pore 10a and the second high-low pressure pore 10b are only for a better understanding of the embodiments of the present invention, and cannot be understood as a limitation of the present invention. For example, in other embodiments of the present invention, the combination of the first high-low pressure pore 10a and the second high-low pressure pore 10b can be set to two or three of the above four output modes according to actual conditions.

[0067] According to the solenoid valve 1 of the embodiment of the present invention, the first sliding valve 20a moves relative to the valve seat plate 10 to switch the air pressure of the first high-low pressure air hole 10a between the high pressure state and the low pressure state, and the second sliding valve 20b moves relative to the valve seat plate 10 to switch the air pressure of the second high-low pressure air hole 10b between the high pressure state and the low pressure state, so that the first high-low pressure air hole 10a and the second high-low pressure air hole 10b output pressure modes in different combinations. In order to achieve three or four output modes, the solenoid 1 in the related art needs to be provided with at least two three-way valves or four-way valves, and the number of parts is large, the volume is large, the diameter of the pipe port is also large, the cost is high, and the reliability will also deteriorate under the condition of frequent use. According to the solenoid valve 1 of the embodiment of the present invention, it can achieve up to four output modes without the need to set a three-way valve or a four-way valve, and the structure is simple and the reliability is also high under the condition of frequent use, and the manufacturing cost is relatively low.

[0068] Reference below Figure 1-Figure 11 Some specific embodiments of the present invention are described in detail. In the following embodiments, the solenoid valve 1 is a direct-acting solenoid valve as an example for description.

[0069] In some embodiments of the present invention, Figure 1As shown, the solenoid valve 1 is constructed as a structure that is symmetrical about the center after removing some parts. The valve seat plate 10 is located at the center of the shell 2 in the length direction of the shell 2. The moving directions of the first sliding valve 20a and the second sliding valve 20b are both parallel to the length direction of the shell 2. The first end plate 7a and the second end plate 7b of the sealed accommodating cavity are provided at both ends of the length direction of the shell 2. The first drive member 3a and the second drive member 3b are respectively arranged adjacent to the two ends of the length direction of the shell 2.

[0070] According to some embodiments of the present invention, the first high- and low-pressure air holes 10a and the first sliding valve 20a are arranged on one of the two opposite side surfaces of the valve seat plate 10, the second high- and low-pressure air holes 10b and the second sliding valve 20b are arranged on the other of the two opposite side surfaces of the valve seat plate 10, and the low-pressure air holes 10c pass through the two opposite side surfaces of the valve seat plate 10.

[0071] For example, Figure 1 In the cross-sectional view of the solenoid valve 1 shown, the first high- and low-pressure air holes 10a are formed by extending from the lower side wall of the valve seat plate 10 to the inside of the valve seat plate 10, the first sliding valve 20a is arranged below the valve seat plate 10, the second high- and low-pressure air holes 10b are formed by extending from the upper side wall of the valve seat plate 10 to the inside of the valve seat plate 10, the second sliding valve 20b is arranged above the valve seat plate 10, the first high- and low-pressure air holes 10a and the second high- and low-pressure air holes 10b are alternately arranged in the left-right direction, the low-pressure air hole 10c is arranged between the first high- and low-pressure air hole 10a and the second high- and low-pressure air hole 10b in the left-right direction, and the low-pressure air hole 10c passes through the valve seat plate 10 in the up-and-down direction.

[0072] According to some embodiments of the present invention, Figure 4 As shown, the first sliding valve 20a is constructed with a first closed chamber 20c for communicating with the first high-low pressure air hole 10a, and the second sliding valve 20b is constructed with a second closed chamber for communicating with the second high-low pressure air hole 10b. The first closed chamber 20c and the second closed chamber are always connected through the low-pressure air hole 10c. The first closed chamber 20c and the second closed chamber isolate the low-pressure air hole 10c from the high-pressure environment in the accommodating chamber, so that the space defined by the first closed chamber 20c, the low-pressure air hole 10c and the second closed chamber always maintains a low-pressure state. In this way, the first sliding valve 20a and the second sliding valve 20b can be pressed against the outer surface of the valve seat plate 10 under the action of the internal and external pressure difference to ensure that the low-pressure air hole 10c is isolated from the accommodating chamber.

[0073] According to some embodiments of the present invention, Figure 1 and Figure 3As shown, the solenoid valve 1 further includes: a high-pressure input pipe 13, a first input pipe, a first high-low pressure output pipe, and a second high-low pressure output pipe. The high-pressure input pipe 13 is connected to the interior of the housing 2, the low-pressure input pipe 14 extends into the housing 2 and is connected to the low-pressure air hole 10c, the first output pipe 15a extends into the housing 2 and is connected to the first high-low pressure air hole 10a, and the second output pipe 15b extends into the housing 2 and is connected to the second high-low pressure air hole 10b.

[0074] Specifically, the high-pressure input pipe 13 is connected to the boost port to input high-pressure gas into the accommodating chamber, the low-pressure input pipe 14 extends into the shell 2 and is connected to the low-pressure air hole 10c to input low-pressure gas into the space defined by the low-pressure air hole 10c, the first closed chamber 20c and the second closed chamber, the first output pipe 15a extends into the shell 2 and is connected to the first high-low pressure output hole to output high pressure or low pressure to the outside, and the second output pipe 15b extends into the shell 2 and is connected to the second high-low pressure output hole to output high pressure or low pressure to the outside.

[0075] According to some embodiments of the present invention, Figure 2 and Figure 4 As shown, the valve seat plate 10 also has a first connecting hole 11a connected to the first high and low pressure air hole 10a, a second connecting hole 11b connected to the second high and low pressure air hole 10b, and a low pressure connecting hole 11c connected to the low pressure air hole 10c, the low pressure input pipe 14 is connected to the first connecting hole 11a, the first output pipe 15a is connected to the first connecting hole 11a, and the second output pipe 15b is connected to the second connecting hole 11b.

[0076] Optionally, continue to refer to Figure 2 and Figure 4 In the embodiment shown, the axial directions of the first high-low pressure air hole 10a, the axial directions of the second high-low pressure air hole 10b and the axial directions of the low pressure air hole 10c are parallel to each other, the axial direction of the first connecting hole 11a is perpendicular to the axial direction of the first high-low pressure air hole 10a, the axial direction of the second connecting hole 11b is perpendicular to the axial direction of the second high-low pressure air hole 10b, and the axial direction of the low pressure connecting hole 11c is perpendicular to the axial direction of the low pressure air hole 10c. That is, the first connecting hole 11a, the second connecting hole 11b and the low pressure connecting hole 11c are arranged on the upper and lower side walls of the valve seat plate 10.

[0077] Further, the first communication hole 11a and the second communication hole 11b respectively penetrate one of the two opposite side surfaces of the valve seat plate 10, the first output pipe 15a and the second output pipe 15b pass through one of the two opposite side walls of the valve seat plate 10, the low-pressure communication hole 11c penetrates the other of the two opposite side surfaces of the valve seat plate 10, and the low-pressure input pipe 14 passes through the other of the two opposite side walls of the valve seat plate 10. Specifically, Figure 2 and Figure 3As shown, the first connecting hole 11a and the second connecting hole 11b are formed by extending the front side wall of the valve seat plate 10 to the interior of the valve seat plate 10, and the first connecting hole 11a is connected to the first high and low pressure air hole 10a, the second connecting hole 11b is connected to the second high and low pressure air hole 10b, and the low pressure connecting hole 11c is formed by extending the rear side wall of the valve seat plate 10 to the interior of the valve seat plate 10, and the low pressure connecting hole 11c is connected to the low pressure air hole 10c.

[0078] According to some embodiments of the present invention, the first driving member 3a is a first electromagnetic coil and independently drives the first sliding valve 20a to move by the electromagnetic force generated when energized, and the second driving member 3b is a second electromagnetic coil and independently drives the second sliding valve 20b to move by the electromagnetic force generated when energized. It is worth noting that the first driving member 3a independently drives the first sliding valve 20a to move and the second driving member 3b independently drives the second sliding valve 20b to move, which means that the first sliding valve 20a and the second sliding valve 20b do not interfere with each other during the activity process and move independently.

[0079] According to some optional examples of the present invention, Figure 5 As shown, when the first electromagnetic coil and the second electromagnetic coil are not energized, the first sliding valve 20a is not connected to the first high-low pressure air hole 10a, and when the second electromagnetic coil is not energized, the second sliding valve 20b is not connected to the second high-low pressure air hole 10b. In other words, when the first electromagnetic coil and the second electromagnetic coil are not energized, the first high-low pressure air hole 10a is in a high-pressure state, and the second high-low pressure air hole 10b is in a high-pressure state. At this time, the first output pipe 15a and the second output pipe 15b both output high pressure, that is, the pressure value output by the electromagnetic valve 1 is the maximum. Therefore, when the compression mechanism connected to the electromagnetic valve 1 is powered on and started, it is beneficial to the operation of the sliding vane of the compressor to achieve the effect of quickly starting the compression mechanism.

[0080] According to some embodiments of the present invention, continue to refer to Figure 1 As shown, the outer circumference of one end of the shell 2 is provided with a first winding cavity and the outer circumference of the other end is provided with a second winding cavity, the first electromagnetic coil is wound in the first winding cavity, and the second electromagnetic coil is wound in the second winding cavity.

[0081] According to some embodiments of the present invention, Figure 1As shown, the solenoid valve 1 further includes: a first fixed iron core 4a, a second fixed iron core 4b, a first plunger 5a and a second plunger 5b. The first fixed iron core 4a and the second fixed iron core 4b are arranged in the housing 2, the first electromagnetic coil surrounds the outside of the first fixed iron core 4a, the second electromagnetic coil surrounds the outside of the second fixed iron core 4b, the first plunger 5a is arranged in the housing 2 and is movable relative to the first fixed iron core 4a, the second plunger 5b is arranged in the housing 2 and is movable relative to the second fixed iron core 4b, the first plunger 5a is connected to the first sliding valve 20a, and the second plunger 5b is connected to the second sliding valve 20b. It should be noted that the first fixed iron core 4a and the second fixed iron core 4b are respectively arranged adjacent to both sides of the length direction of the housing 2, and the first plunger 5a is arranged between the first fixed iron core 4a and the valve seat plate 10, and the second plunger 5b is arranged between the second fixed iron core 4b and the valve seat plate 10.

[0082] Optionally, continue to refer to Figure 1 In the embodiment shown, a first stopper 9a and a second stopper 9b are further provided in the housing 2. The first stopper 9a includes two portions and is respectively provided on the upper inner wall and the lower inner wall of the housing 2. The first stopper 9a is provided between the first plunger 5a and the valve seat plate 10 to limit the movement range of the first plunger 5a and prevent the first plunger 5a from colliding with the valve seat plate 10 during the movement. The second stopper 9b includes two portions and is respectively provided on the upper inner wall and the lower inner wall of the housing 2. The second stopper 9b is provided between the second plunger 5b and the valve seat plate 10 to limit the movement range of the second plunger 5b and prevent the second plunger 5b from colliding with the valve seat plate 10 during the movement.

[0083] Further, continue to refer to Figure 1 In the embodiment shown, the solenoid valve 1 further includes: a first support plate 21a and a second support plate 21b. The first plunger 5a is connected to the first sliding valve 20a through the first support plate 21a, and the second plunger 5b is connected to the second sliding valve 20b through the second support plate 21b. It is worth noting that the first support plate 21a and the second support plate 21b are both spaced apart from the valve seat plate 10, so that the first sliding valve 20a and the second sliding valve 20b are not interfered by the first support plate 21a and the second support plate 21b during their relative movement to the valve seat plate 10.

[0084] In a further example of the present invention, continue to refer to Figure 1In the embodiment shown, the solenoid valve 1 further includes: a first coil spring 6a and a second coil spring 6b. Among them, one end of the first coil spring 6a is connected to the first fixed iron core 4a and the other end is connected to the first plunger 5a, and one end of the second coil spring 6b is connected to the second fixed iron core 4b and the other end is connected to the second plunger 5b. Therefore, when the first electromagnetic coil and the second electromagnetic coil are powered off, the first sliding valve 20a and the second sliding valve 20b are automatically reset to the position of mode one under the action of the first coil spring 6a and the second coil spring 6b, and the reciprocating movement of the first plunger 5a and the second plunger 5b can be simplified. It is worth noting that when the first electromagnetic coil and the second electromagnetic coil are powered off, the first coil spring 6a and the second coil spring 6b are in a natural state (i.e., a non-expanded state).

[0085] Reference below Figures 9 to 11 The compression device 30 proposed in accordance with the second aspect of the embodiment of the present invention is described.

[0086] According to the second aspect of the present invention, the compression device 30 includes a compressor and a solenoid valve 1, wherein the compressor includes a compressor housing 40, and the compressor housing 40 is provided with at least two pressure signal interfaces. The variable capacity operation of the compressor can be controlled by controlling the pressure signal interface, and the first high and low pressure air holes 10a and the second high and low pressure air holes 10b are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

[0087] The compression device 30 according to the second aspect of the present invention can realize arbitrary switching of a variety of high-pressure and low-pressure combination input modes by utilizing the solenoid valve 1 according to the first aspect of the present invention, with low manufacturing cost and low operating power.

[0088] According to some embodiments of the present invention, the inventive compressor includes a first compression mechanism part 35A, the first compression mechanism part 35A includes a first cylinder 31, a first piston 41a rotatably arranged in the first cylinder 31, and a first vane 44a that often stops at the first piston 41a, and the end of the first vane 44a forms a first vane cavity 34a, the second compressor 50b includes a second cylinder 32, a second piston 41b rotatably arranged in the second cylinder 32, and a second vane 44b that often stops at the second piston 41b, and the end of the second vane 44b forms a second vane cavity 34b, the solenoid valve 1 is the solenoid valve 1 according to the first aspect of the present invention The embodiment, the first high and low pressure air holes 10a are connected to the first vane cavity 34a, and the second high and low pressure air holes 10b are connected to the second vane cavity 34b.

[0089] Invention Invention Reference below Fig. 9 The compression device 30A according to some embodiments of the present invention is described in detail.

[0090] like Fig. 9As shown, in some embodiments of the present invention, the compressor comprises a compressor housing 40 and a first compression mechanism portion 35A, wherein the compressor housing 40 is provided with a motor 36 and the lower portion of the compressor housing 40 is provided with lubricating oil 46 .

[0091] The first compression mechanism part 35A includes a first cylinder 31, a second cylinder 32 and a middle partition plate 38. The first cylinder 31 is provided with a first piston 41a and a first sliding plate 44a. The first piston 41a can roll in the first cylinder 31. The first sliding plate 44a often stops at the first piston 41a and can reciprocate with the first piston 41a. The end of the first sliding plate 44a forms a first sliding plate cavity 34a. The second cylinder 32 is provided with a second piston 41b and a second sliding plate 44b. The second piston 41b can roll in the second cylinder 32. The second sliding plate 44b often stops at the second piston 41b and can reciprocate with the second piston 41b. The end of the second sliding plate 44b forms a second sliding plate cavity 34b. The middle partition plate 38 is provided between the first cylinder 31 and the second cylinder 32 and separates the first cylinder 31 and the second cylinder 32.

[0092] Furthermore, the second cylinder 32 is also provided with a third slide 44c and a slide spring 45. The third slide 44c is squeezed by the slide spring 45 so that the third slide 44c always stops at the second piston 41b. In other words, the second cylinder 32 has a circular compression chamber, which is divided into two compression chambers by the second piston 41b. The second slide 44b and the third slide 44c are respectively arranged in the two compression chambers.

[0093] According to some embodiments of the present invention, the first slide cavity 34a and the second slide cavity 34b are respectively connected to the two pressure signal interfaces in a one-to-one correspondence. Specifically, the first slide cavity 44a is provided with an opening connected to one pressure signal interface, and the second slide cavity 44b is provided with an opening connected to the other pressure signal interface. One pressure signal interface is connected to the first output tube 15a through the first connecting tube 33a, and the other pressure signal interface is connected to the second output tube 15b through the second connecting tube 33b.

[0094] Furthermore, the compressor is also provided with a high-pressure pipe 40a and a first intake pipe, one end of the high-pressure pipe 40a and one end of the first intake pipe are respectively connected to the compressor housing 40, the other end of the high-pressure pipe 40a is connected to the high-pressure input pipe 13, and the other end of the first intake pipe is connected to the low-pressure input pipe 14. Preferably, the solenoid valve 1 can be installed and fixed on the outer wall of the compressor housing 40.

[0095] In some embodiments of the present invention, during the operation of the compressor, the third sliding plate 44c abutting against the sliding plate spring 45 follows the second piston 41b to reciprocate. Through its compression, the pressure in the compressor housing 40 increases, and the pressure in the low-pressure input pipe 14 decreases, and this pressure difference is ΔP=Pd-Ps.

[0096] In some specific examples of the present invention, when the solenoid valve 1 is in mode one, the pressure in the first vane chamber 34a and the second vane chamber 34b rises, and △P increases. After about 10 seconds, the front ends of the first vane 44a and the second vane 44b abut against the first piston 41a and the second piston 41b respectively, and the first cylinder 31 and the second cylinder 32 begin to absorb the low-pressure gas and perform compression work, thereby, △P gradually increases, and the mode can continue to be switched during subsequent work.

[0097] For example, if mode 1 is continued, the maximum refrigeration capacity of the compressor can be brought into play. For another example, if mode 4 is switched, the first slide 44a and the second slide 44b are in a stationary state, and the third slide 44c moves back and forth. At this time, the refrigeration capacity of the compressor is the minimum. In this way, the efficiency of the compressor can be maximized, and the energy consumption of the compressor can be reduced.

[0098] In some embodiments of the present invention, a portion of the lubricating oil 46 at the bottom of the compressor is mixed in the internal high-pressure gas of the compressor housing 40 as spray oil, and the spray oil can flow from the high-pressure pipe 40a to the housing 2 of the direct-acting solenoid valve 1 to lubricate the reciprocating sliding parts.

[0099] Reference below Fig.10 Compression devices 30B according to other embodiments of the present invention are described.

[0100] like Fig.10 As shown, the compressor also includes a third cylinder 33, which is provided with a third piston and a third sliding vane 44c. The third piston 44c can roll in the third cylinder 33, the third sliding vane 44c often stops at the third piston 33 and can reciprocate with the third piston 33, and the end of the third sliding vane 44c forms a third sliding vane cavity.

[0101] Specifically, the invention Fig.10 The compressor shown in has a second compression mechanism 35B, and the second compression mechanism 35B is provided with a first cylinder 31, a second cylinder 32 and a third cylinder 33, a first middle partition 38a is provided between the first cylinder 31 and the second cylinder 32, and a second middle partition 38b is provided between the second cylinder 32 and the third cylinder 33. The first vane cavity 34a of the first cylinder 31 is connected with a first connecting pipe 33a, and the first connecting pipe 33a is connected to the first output pipe 15a, and the second vane cavity 34b of the second cylinder 32 is connected with a second connecting pipe 33b, and the second connecting pipe 33b is connected to the second output pipe 15b. The compressor is also provided with a high-pressure pipe 40a and a first suction pipe, one end of the high-pressure pipe 40a and one end of the first suction pipe are respectively connected to the compressor housing 40, the other end of the high-pressure pipe 40a is connected to the high-pressure input pipe 13, and the other end of the first suction pipe is connected to the low-pressure input pipe 14.

[0102] It is worth noting that the first cylinder 31 and the second cylinder 32 have a capacity control function that can make the slide plate stationary and release the stationary state, and the third slide plate 44c of the third cylinder 33 is provided with a slide plate spring 45, so the third slide plate 44c can be operated continuously. The following example illustrates the displacement of each compression chamber.

[0103] In some embodiments of the present invention, the displacement of the first cylinder 31 is 7.5cc, the displacement of the second cylinder 32 is 5.0cc, and the displacement of the third cylinder 33 is 2.5cc. When the solenoid valve 1 is in mode 1, the first output pipe 15a and the second output pipe 15b are both high pressure, and the total displacement of the compressor during operation is 7.5+5.0+2.5=15cc; when the solenoid valve 1 is in mode 2, the first output pipe 15a is high pressure and the second output pipe 15b is low pressure, and the total displacement of the compressor during operation is 7.5+2.5=10cc; when the solenoid valve 1 is in mode 3, the first output pipe 15a is low pressure and the second output pipe 15b is high pressure, and the total displacement of the compressor during operation is 5.0+2.5=7.5cc; when the solenoid valve 1 is in mode 3, the first output pipe 15a is low pressure and the second output pipe 15b is low pressure, and the total displacement of the compressor during operation is 2.5cc. Compared with the compressor displacement of 10cc usually used in air conditioners in related technologies, the maximum displacement of the compressor in the embodiment of the present invention is 15cc and the minimum displacement is 2.5cc. During use, it can first operate in the output mode of mode one, and then operate in the output mode of mode four after the room temperature stabilizes. Therefore, the compression device 30B in the embodiment of the present invention has a faster temperature adjustment and lower energy consumption, which is beneficial to improving the energy efficiency ratio of the air conditioner.

[0104] Reference below Fig.11 Compression devices 30 according to further embodiments of the present invention are described.

[0105] According to some further embodiments of the present invention, Fig.11 As shown, there are two compressors, and the first vane cavities 34a of the two compressors are connected to the two pressure signal interfaces in a one-to-one correspondence.

[0106] Specifically, the compressor includes a first compressor 50a and a second compressor 50b. The first vane cavity 34a of the first compressor 50a is connected to the first high and low pressure air hole 10a through a pressure signal interface, and the first vane cavity 34a of the second compressor 50b is connected to the second high and low pressure air hole 10b through another pressure signal interface. The low pressure input pipe 14 is connected to the second intake pipe 32a of the first compressor 50a, and the boost hole 13a is connected to the high pressure pipe 40a of the first compressor 50a. The solenoid valve 1 is used to control the cooling capacity of the two compressors.

[0107] Optionally, the compression device 30 further includes an indoor heat exchanger 61, an expansion device 62, and an outdoor heat exchanger 63 connected in sequence. The first compressor 50a is provided with a first exhaust pipe 51a for discharging high-pressure gas, and the second compressor 50b is provided with a second exhaust pipe 51b for discharging high-pressure gas. The first exhaust pipe 51a and the second exhaust pipe 51b are connected to the indoor heat exchanger 61 through a four-way valve 60. The high-pressure gas discharged from the first exhaust pipe 51a and the second exhaust pipe 51b enters the indoor heat exchanger 61 through the four-way valve 60, and then flows to the outdoor heat exchanger 63 through the expansion device 62, and becomes a low-pressure gas. The low-pressure gas enters the liquid storage tank 48 through the four-way valve 60, and finally returns to the suction pipes of the first compressor 50a and the second compressor 50b.

[0108] It is worth noting that the second cylinder 32 of the first compressor 50a and the second cylinder 32 of the second compressor 50b have the function of stationary or releasing the vane, that is, when the first compressor 50a is in operation, the cooling capacity of the first compressor 50a and the second compressor 50b can be controlled by the solenoid valve 1.

[0109] The following examples illustrate the displacement changes of the first compressor 50a and the second compressor 50b under different output modes of the solenoid valve 1. For example, when the solenoid valve 1 is in the working state of mode 1, the total displacement of the first compressor 50a and the second compressor 50b is equal, and the first compressor 50a and the second compressor 50b operate at 100% of the refrigeration capacity; when the solenoid valve 1 is in the working state of mode 2 or mode 3, one of the compressors operates at 100% of the refrigeration capacity, and the other compressor operates at 50% of the refrigeration capacity; when the solenoid valve 1 is in the working state of mode 4, the first compressor 50a and the second compressor 50b both operate at 50% of the refrigeration capacity, both of which are the minimum refrigeration capacity. As a result, the two compressors share one solenoid valve 1 for operation, and the two compressors can respectively perform capacity control in mode 2.

[0110] The refrigeration cycle system proposed in the embodiment of the third aspect of the present invention comprises a condenser, an evaporator and a compression device 30 according to the embodiment of the second aspect of the present invention which are sequentially connected to form a refrigerant circuit.

[0111] The refrigeration cycle system according to the third aspect of the present invention has the advantages of good refrigeration effect, short start-up time and low energy consumption by utilizing the compression device 30 according to the second aspect of the present invention.

[0112] An air conditioner according to a fourth embodiment of the present invention includes a refrigeration cycle system according to the third embodiment of the present invention.

[0113] The air conditioner according to the fourth aspect of the present invention, by utilizing the refrigeration cycle system according to the third aspect of the present invention, has the advantages of good refrigeration effect, short start-up time and high energy efficiency ratio.

[0114] The solenoid valve 1 according to the embodiment of the present invention, and the compression device 30, refrigeration cycle system and other structures and operations of the air conditioner having the same are well known to those skilled in the art and will not be described in detail here.

[0115] In the description of this specification, the description with reference to the terms "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0116] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A solenoid valve, characterized in that: include: A shell, wherein a closed accommodating cavity is defined in the shell, and the shell has a pressurizing port communicated with the accommodating cavity for pressurizing the accommodating cavity; A valve seat plate, the valve seat plate is arranged in the shell, and the valve seat plate has a first high-low pressure air hole, a second high-low pressure air hole and a low pressure air hole; a first sliding valve and a second sliding valve, wherein the first sliding valve is movable relative to the valve seat plate to select whether to communicate with the first high- and low-pressure air holes, and the second sliding valve is movable relative to the valve seat plate to select whether to communicate with the second high- and low-pressure air holes, and the first sliding valve and the second sliding valve are always in communication through the low-pressure air hole; A first driving member and a second driving member, wherein the first driving member is disposed in the housing and is used to drive the first sliding valve to move relative to the valve seat plate, and the second driving member is disposed in the housing and is used to drive the second sliding valve to move relative to the valve seat plate.

2. The solenoid valve according to claim 1, characterized in that: The first high-low pressure air hole and the first sliding valve are arranged on one of the two opposite side surfaces of the valve seat plate, the second high-low pressure air hole and the second sliding valve are arranged on the other of the two opposite side surfaces of the valve seat plate, and the low pressure air hole passes through the two opposite side surfaces of the valve seat plate.

3. The solenoid valve according to claim 1, characterized in that: The first sliding valve is provided with a first sealed chamber for communicating with the first high and low pressure air holes, and the second sliding valve is provided with a second sealed chamber for communicating with the second high and low pressure air holes. The first sealed chamber and the second sealed chamber are always connected through the low pressure air hole.

4. The solenoid valve according to claim 1, characterized in that: Also includes: A high-pressure input pipe, the high-pressure input pipe is connected to the interior of the shell; A low-pressure input pipe extending into the housing and communicating with the low-pressure air hole; A first output pipe and a second output pipe, wherein the first output pipe extends into the shell and communicates with the first high- and low-pressure air holes, and the second output pipe extends into the shell and communicates with the second high- and low-pressure air holes.

5. The solenoid valve according to claim 4, characterized in that: The valve seat plate also has a first connecting hole connected to the first high- and low-pressure air holes, a second connecting hole connected to the second high- and low-pressure air holes, and a low-pressure connecting hole connected to the low-pressure air hole, the low-pressure input pipe is connected to the low-pressure connecting hole, the first output pipe is connected to the first connecting hole, and the second output pipe is connected to the second connecting hole.

6. The solenoid valve according to claim 5, characterized in that: The axial direction of the first high- and low-pressure air holes, the axial direction of the second high- and low-pressure air holes, and the axial direction of the low-pressure air hole are parallel to each other, the axial direction of the first connecting hole is perpendicular to the axial direction of the first high- and low-pressure air holes, the axial direction of the second connecting hole is perpendicular to the axial direction of the second high- and low-pressure air holes, and the axial direction of the low-pressure connecting hole is perpendicular to the axial direction of the low-pressure air hole.

7. The solenoid valve according to claim 6, characterized in that: The first communicating hole and the second communicating hole respectively penetrate one of the two opposite side surfaces of the valve seat plate, and the low-pressure communicating hole penetrates the other of the two opposite side surfaces of the valve seat plate; The first output pipe and the second output pipe pass through one of the two opposite side walls of the valve seat plate, and the low-pressure input pipe passes through the other of the two opposite side walls of the valve seat plate.

8. The solenoid valve according to claim 1, characterized in that: The valve seat plate is located at the center of the housing in the length direction of the housing, and the moving directions of the first sliding valve and the second sliding valve are both parallel to the length direction of the housing.

9. The solenoid valve according to any one of claims 1 to 8, characterized in that: The first driving member is a first electromagnetic coil and independently drives the first sliding valve to move by the electromagnetic force generated when energized. The second driving member is a second electromagnetic coil and independently drives the second sliding valve to move by the electromagnetic force generated when energized.

10. The solenoid valve according to claim 9, characterized in that: When the first electromagnetic coil and the second electromagnetic coil are not energized, the first sliding valve is not connected to the first high and low pressure air holes; when the second electromagnetic coil is not energized, the second sliding valve is not connected to the second high and low pressure air holes.

11. The solenoid valve according to claim 9, characterized in that: A first winding cavity is disposed on the outer circumference of one end of the shell, and a second winding cavity is disposed on the outer circumference of the other end of the shell. The first electromagnetic coil is wound in the first winding cavity, and the second electromagnetic coil is wound in the second winding cavity.

12. The solenoid valve according to claim 9, characterized in that: Also includes: A first fixed iron core and a second fixed iron core, wherein the first fixed iron core and the second fixed iron core are arranged in the housing, the first electromagnetic coil is surrounded by an outer side of the first fixed iron core, and the second electromagnetic coil is surrounded by an outer side of the second fixed iron core; A first plunger and a second plunger, wherein the first plunger is disposed in the housing and is movable relative to the first fixed iron core, the second plunger is disposed in the housing and is movable relative to the second fixed iron core, the first plunger is connected to the first sliding valve, and the second plunger is connected to the second sliding valve.

13. The solenoid valve according to claim 12, characterized in that: Also includes: a first support plate, wherein the first plunger is connected to the first sliding valve through the first support plate; A second supporting plate, wherein the second plunger is connected to the second sliding valve through the second supporting plate.

14. The solenoid valve according to claim 12, characterized in that: Also includes: a first coil spring, one end of the first coil spring being connected to the first fixed core and the other end of the first coil spring being connected to the first plunger; A second coil spring, one end of the second coil spring is connected to the second fixed iron core and the other end is connected to the second plunger.

15. The solenoid valve according to claim 1, characterized in that: The solenoid valve is a direct-acting solenoid valve.

16. A compression device, characterized in that: include: A compressor, the compressor comprising a compressor housing, the compressor housing being provided with at least two pressure signal interfaces, and the compressor can be controlled to operate in variable capacity by controlling the pressure signal interfaces; According to the solenoid valve according to any one of claims 1 to 15, the first high and low pressure air holes and the second high and low pressure air holes are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

17. The compression device according to claim 16, characterized in that The compressor also includes: a first cylinder, wherein the first cylinder is provided with a first piston and a first sliding plate, wherein the first piston is rollable in the first cylinder, the first sliding plate is always stopped against the first piston and can reciprocate with the first piston, and the end of the first sliding plate forms a first sliding plate cavity; A second cylinder, wherein the second cylinder is provided with a second piston and a second sliding plate, wherein the second piston can roll in the second cylinder, the second sliding plate often stops at the second piston and can reciprocate with the second piston, and the end of the second sliding plate forms a second sliding plate cavity; A middle partition is provided between the first cylinder and the second cylinder.

18. The compression device according to claim 17, characterized in that The second cylinder is further provided with a third sliding plate and a sliding plate spring. The third sliding plate is pressed by the sliding plate spring so that the third sliding plate always stops against the second piston.

19. The compression device according to claim 17, characterized in that The first sliding plate cavity and the second sliding plate cavity are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

20. The compression device according to claim 17, characterized in that The compressor also includes: The third cylinder is provided with a third piston and a third sliding plate. The third piston can roll in the third cylinder. The third sliding plate often stops at the third piston and can reciprocate with the third piston. The end of the third sliding plate forms a third sliding plate cavity.

21. The compression device according to claim 17, characterized in that: There are two compressors, and the first vane cavities of the two compressors are respectively connected to the two pressure signal interfaces in a one-to-one correspondence.

22. A refrigeration cycle system, characterized in that: It comprises a condenser, an evaporator and a compression device according to any one of claims 16-21 which are sequentially connected to form a refrigerant circuit.

23. An air conditioner, characterized in that: Comprising the refrigeration cycle system according to claim 22.

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