Reversible solenoid valve and air conditioning unit

Abstract

The present invention relates to the field of refrigeration technology, and in particular to a reversible solenoid valve and an air conditioning unit. A reversible solenoid valve comprises a valve body and a valve core assembly, wherein a first connecting port and a second connecting port are respectively provided on both sides of the valve body, the valve body has a valve cavity, the valve core assembly is arranged in the valve cavity, and the valve core assembly can slide in the valve cavity to connect or disconnect the first connecting port and the second connecting port; the valve body comprises a main body and a driving part, the main body is connected to the driving part, a part of the valve core assembly is located in the main body, and another part of the valve core assembly extends into the driving part, and the main body and the driving part are separately arranged. The advantage of the present invention is that the components inside the main body or at one end of the main body can be installed first, and then the components such as the sealing ring can be installed, and then the driving part and the main body can be welded and fixed to facilitate installation, so as to prevent the valve body from being too long and making it difficult for some components to extend into the valve body for installation.

Description

Technical Field

[0001] The invention relates to the technical field of refrigeration, and in particular to a reversible solenoid valve and an air conditioning unit. Background Art

[0002] Reversible solenoid valves are usually installed in air conditioning units to achieve two-way flow of media.

[0003] However, the valve body of the existing reversible solenoid valve is an integrated one, and the valve body is a long strip, so it is difficult to insert the sealing ring and other parts inside the valve body, which makes installation difficult. Summary of the invention

[0004] Based on this, the present invention provides a reversible solenoid valve for the above technical problems, and the technical solution is as follows:

[0005] A reversible solenoid valve comprises a valve body and a valve core assembly, wherein a first connecting port and a second connecting port are respectively provided on both sides of the valve body, the valve body has a valve cavity, the valve core assembly is arranged in the valve cavity, and the valve core assembly can slide in the valve cavity to connect or disconnect the first connecting port and the second connecting port; the valve body comprises a main body and a driving part, the main body is connected to the driving part, a part of the valve core assembly is located in the main body, and another part of the valve core assembly extends into the driving part, and the main body and the driving part are separately arranged.

[0006] With this arrangement, the components inside the main body or near one end of the main body close to the drive part can be installed first, and then the sealing ring and other components can be installed, and then the drive part and the main body can be welded and fixed to facilitate installation and prevent the valve body from being too long, making it difficult for some components to extend into the valve body for installation.

[0007] An intermediate end cover is provided at one end of the driving part close to the main body, and the driving part is connected to the intermediate end cover. The intermediate end cover is provided with a mounting hole, and the valve core assembly is inserted into the mounting hole. A sealing groove is provided on the inner wall of the mounting hole, and a sealing ring is provided in the sealing groove, and the sealing ring can abut against the valve core assembly.

[0008] The arrangement is such that the valve core assembly is sealed and connected to the middle end cover.

[0009] In one embodiment, the middle end cover includes a cover body and a guide sleeve connected to each other, the cover body is arranged outside the guide sleeve and connected to the inner wall of the driving part, the valve core assembly is inserted into the guide sleeve, and the cover body and the guide sleeve are arranged separately.

[0010] With such arrangement, during the installation process, the cover body can be welded to the main body first, and then the sealing ring and other components can be assembled with the guide sleeve, and then connected to the cover body after assembly, so as to protect the sealing ring from the influence of the high temperature of welding.

[0011] In one embodiment, a solder groove is formed on the outer side wall of the middle end cover.

[0012] In one embodiment, the valve core assembly includes a piston component, which is arranged on the side of the intermediate end cover away from the first connecting port, and the valve chamber includes a first chamber and a second chamber, the first chamber is located between the intermediate end cover and the piston component, and the second chamber is located on the side of the piston component away from the intermediate end cover; the reversible solenoid valve also includes a pilot valve, and a third connecting port and a fourth connecting port are opened on the driving part, the third connecting port is connected to the first chamber, the fourth connecting port is connected to the second chamber, and the pilot valve is connected to the third connecting port and the fourth connecting port respectively.

[0013] Such an arrangement can form a pressure difference between the first chamber and the second chamber, thereby driving the piston component to move.

[0014] In one embodiment, the valve core assembly further includes a slider component, the slider component is disposed close to the first communication port, and the slider component can slide along the axial direction of the reversible electromagnetic to block the first communication port and the second communication port.

[0015] In one embodiment, the slider component includes a first part and a second part, the first part is arranged close to the first connecting port, the second part is arranged close to the second connecting port, the first part and the second part are arranged relative to each other to form a accommodating cavity, a second elastic member is provided in the accommodating cavity, one end of the second elastic member abuts against the first part, and the other end abuts against the second part.

[0016] Such an arrangement enables the first portion and the second portion to be respectively attached to the end surface of the first communication port and the end surface of the second communication port, so as to enhance the sealing performance of the plugging.

[0017] In one embodiment, the first part and the second part both include a first section and a second section, the first section of the first part is arranged close to the first connecting port, the first section of the second part is arranged close to the second connecting port, the second section of the first part is sleeved on the outside of the second section of the second part, a balancing hole is opened on the first part, and the accommodating cavity is connected with the interior of the main body through the balancing hole; or, the second section of the second part is sleeved on the outside of the second section of the first part, a balancing hole is opened on the second part, and the accommodating cavity is connected with the interior of the main body through the balancing hole.

[0018] Such a configuration enables the accommodating chamber to communicate with the flow chamber to prevent the second part from being squeezed by the medium. At the same time, when the medium acts on the first part, the volume of the accommodating chamber will shrink. The balancing hole can enable the medium in the accommodating chamber to flow out from the balancing hole.

[0019] In one embodiment, the first portion and the second portion have the same structure and size, the first portion and the second portion are spaced apart to form a gap, and the accommodating cavity is connected to the interior of the main body through the gap.

[0020] Such an arrangement can save a mold and reduce production costs.

[0021] The present invention also provides the following technical solutions:

[0022] An air conditioning unit comprises the above-mentioned reversible solenoid valve.

[0023] Compared with the prior art, the present invention divides the valve body into a separately arranged driving part and a main body. During the installation process, the components in the main body can be installed first, and then the sealing ring and other components can be installed, and then the driving part can be installed. This can facilitate the installation of components such as sealing rings and avoid the problem that the integrated valve body is deep and components such as sealing rings are difficult to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A cross-sectional view of a reversible solenoid valve provided by the present invention;

[0025] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0026] Figure 3 is a three-dimensional diagram of a reversible solenoid valve;

[0027] Figure 4 It is a cross-sectional view of a portion of the valve core assembly of the first embodiment;

[0028] Figure 5 It is a cross-sectional view of a portion of the valve core assembly of the second embodiment;

[0029] Figure 6 It is a cross-sectional view of the middle end cover.

[0030] The symbols in the figure mean the following:

[0031] 100, reversible solenoid valve; 10, valve body; 101, first communication port; 102, second communication port; 103, first connecting pipe; 104, second connecting pipe; 11, valve chamber; 111, circulation chamber; 112, first chamber; 113, second chamber; 13, third communication port; 131, first capillary; 14, fourth communication port; 141, second capillary; 15, middle end cover; 151, mounting hole; 152, sealing groove; 153, sealing ring; 154, solder groove; 155, cover body; 156, guide sleeve; 16, first end cover; 17, second end cover; 18, main body; 19, drive unit; 20, valve core assembly; 21. Piston component; 211. Piston bowl; 2111. First bowl; 2112. Second bowl; 212. Intermediate baffle; 213. First baffle; 2131. First protrusion; 2132. First throttle hole; 214. Second baffle; 2141. Second protrusion; 2142. Second throttle hole; 215. First elastic member; 22. Connecting rod component; 221. Connecting rod; 222. Guide frame; 23. Slider component; 231. First part; 2311. First section; 2312. Second section; 232. Second part; 233. Second elastic member; 234. Balance hole; 235. Accommodating chamber; 236. Gap; 30. Pilot valve. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0035] Please also see Figures 1 to 6The present invention provides a reversible solenoid valve 100 (hereinafter referred to as the solenoid valve 100), which is installed in an air-conditioning unit and is used to control the connection or isolation of a pipeline.

[0036] The solenoid valve 100 of the present invention can be used in an air-conditioning unit that needs to work in both directions, for example, it can be installed in an air-conditioning unit that needs to have both cooling mode and heating mode functions.

[0037] See also Figure 1 and Figure 3 The solenoid valve 100 includes a valve body 10 and a valve core assembly 20. The valve body 10 has a valve cavity 11. The valve body 10 is provided with a first communication port 101 and a second communication port 102. The valve core assembly 20 is disposed in the valve cavity 11 and can slide in the valve cavity 11 to connect or disconnect the first communication port 101 and the second communication port 102. The first communication port 101 can be an inlet, the second communication port 102 can be an outlet, or the second communication port 102 can be an outlet. The second communication port 102 is an inlet. When the first communication port 101 is an inlet, the second communication port 102 is an outlet, and vice versa.

[0038] The valve body 10 includes a main body 18 and a driving part 19, the main body 18 and the driving part 19 are connected to each other, the first communication port 101 and the second communication port 102 are provided on the main body 18, the main body 18 and the driving part 19 are provided separately, and are fixed by welding during installation. In this arrangement, the sealing ring 153 and other parts can be installed first, and then the driving part 19 and the main body 18 can be welded and fixed, so as to facilitate installation and prevent the valve body 10 from being too long so that some parts are difficult to extend into the valve body 10 for installation.

[0039] A first connecting pipe 103 is disposed in the first communicating port 101 , and a second connecting pipe 104 is disposed in the second communicating port 102 . The first connecting pipe 103 and the second connecting pipe 104 are respectively connected to pipelines of the air conditioning unit.

[0040] The driving part 19 is provided with a third communication port 13 and a fourth communication port 14. The third communication port 13 is connected to the first cavity 112 described below, and the fourth communication port 14 is connected to the second cavity 113 described below. A first capillary tube 131 is provided in the third communication port 13, and a second capillary tube 141 is provided in the fourth communication port 14. The first capillary tube 131 and the second capillary tube 141 are connected to the pilot valve 30 described below, so that a pressure difference is formed on both sides of the valve core assembly 20, thereby pushing the valve core assembly 20 to move.

[0041] An intermediate end cover 15 is provided at one end of the driving part 19, and the driving part 19 is connected to the intermediate end cover 15 and the main body 18. The intermediate end cover 15 is fixedly connected to the driving part 19, and may be fixedly connected to the main body 18 or not. In this arrangement, the intermediate end cover 15 can be first fixed to one end of the main body 18, and then the sealing ring 153 and other components can be installed, and then the driving part 19 can be installed, which is convenient for the installation of the intermediate end cover 15.

[0042] The middle end cover 15 is provided with a mounting hole 151 , the inner wall of the mounting hole 151 is provided with a sealing groove 152 , a sealing ring 153 is provided in the sealing groove 152 , and the sealing ring 153 can abut against the valve core assembly 20 to enable the valve core assembly 20 to slide in a sealed manner in the mounting hole 151 .

[0043] See also Figure 6 The middle end cover 15 includes a cover body 155 and a guide sleeve 156 connected to each other. The cover body 155 is arranged outside the guide sleeve 156 and connected to the inner wall of the driving part 19. The valve core assembly 20 is inserted into the guide sleeve 156. The cover body 155 and the guide sleeve 156 are separately arranged, and the installation hole 151 is opened in the guide sleeve 156. During the installation process, the cover body 155 can be welded to the main body 18 first, and then the sealing ring 153 and other parts are assembled with the guide sleeve 156, and then connected with the cover body 155 after assembly, which can protect the sealing ring 153 from the influence of welding high temperature. The cover body 155 and the guide sleeve 156 are connected by rivets, screws, etc.

[0044] A solder groove 154 is provided on the outer wall of the middle end cover 15, that is, a solder groove 154 is provided on the outer wall of the cover body 155. Before welding, solder or a solder ring is placed in the solder groove 154, and then welding is performed.

[0045] Please continue to see Figure 1 The first end cover 16 and the second end cover 17 are provided at both ends of the valve body 10. The first end cover 16 and the middle end cover 15 form a flow chamber 111. The flow chamber 111 is located inside the main body 18. The middle end cover 15 and the valve core assembly 20 form a first chamber 112. The middle end cover 15 and the valve core assembly 20 form a second chamber 113. The first chamber 112 and the second chamber 113 are located inside the driving part 19. When the solenoid valve 100 is in an open state, the flow chamber 111 is connected with the first communication port 101 and the second communication port 102. The medium in the first chamber 112 and the second chamber 113 can form a pressure difference, push the valve core assembly 20 to move, thereby controlling the connection or isolation of the first communication port 101 and the second communication port 102, realizing a two-way function, simplifying the pipeline of the air-conditioning unit, and reducing costs.

[0046] The valve core assembly 20 includes a connecting rod component 22 and a slider component 23 . The slider component 23 is connected to the connecting rod component 22 . One end of the connecting rod component 22 is inserted into the mounting hole 151 .

[0047] The connecting rod component 22 includes a connecting rod 221 and a guide frame 222 that are connected to each other. The guide frame 222 is sleeved on the outside of the slider component 23. Under the influence of the medium, the guide frame 222 will rotate. The guide frame 222 and the slider component 23 can abut against each other and restrict rotation to each other, thereby preventing the slider component 23 from tilting during movement and affecting the sealing of the first connecting port 101 and the second connecting port 102. At the same time, it also prevents the slider component 23 from tilting and getting stuck in the first connecting port 101 or the second connecting port 102, causing the slider component 23 to get stuck.

[0048] The slider member 23 includes a first portion 231 and a second portion 232. The first portion 231 is disposed near the first communication port 101, and the second portion 232 is disposed near the second communication port 102. The first portion 231 can block the first communication port 101, and the second portion 232 can block the second communication port 102.

[0049] Specifically, there is a accommodating cavity 235 between the first part 231 and the second part 232, and a second elastic member 233 is provided in the accommodating cavity 235. One end of the second elastic member 233 abuts against the first part 231, and the other end abuts against the second part 232. The second elastic member 233 enables the first part 231 and the second part 232 to respectively fit against the end surface of the first connecting port 101 and the end surface of the second connecting port 102 to enhance the sealing performance of the plugging.

[0050] See also Figure 4 In the first embodiment, the first part 231 and the second part 232 both include a first section 2311 and a second section 2312. The first section 2311 of the first part 231 is disposed close to the first communication port 101, and the first section 2311 of the second part 232 is disposed close to the second communication port 102. The inner diameter of the second section 2312 of the first part 231 is greater than the inner diameter of the second section 2312 of the first part 231. The second section 2312 of the first part 231 is sleeved on the second section 2312 of the second part 232. 2, a balancing hole 234 is provided on the first part 231, and the accommodating chamber 235 is communicated with the circulation chamber 111 through the balancing hole 234; or, the inner diameter of the second section 2312 of the second part 232 is larger than the inner diameter of the second section 2312 of the first part 231, the second section 2312 of the second part 232 is sleeved on the outer side of the second section 2312 of the first part 231, a balancing hole 234 is provided on the second part 232, and the accommodating chamber 235 is communicated with the circulation chamber 111 through the balancing hole 234. Such a configuration enables the accommodating chamber 235 to communicate with the circulation chamber 111 to prevent the second part 232 from being squeezed by the medium. At the same time, when the medium acts on the first part 231, the volume of the accommodating chamber 235 will be reduced, and the balancing hole 234 can enable the medium in the accommodating chamber 235 to flow out from the balancing hole 234.

[0051] See also Figure 5In the second embodiment, the structures and dimensions of the first part 231 and the second part 232 are equal, that is, the shape of the first part 231 is the same as that of the second part 232, the width of the first part 231 is equal to that of the second part 232, the length of the first part 231 is equal to that of the second part 232, and the height of the first part 231 is equal to that of the second part 232, which can save a mold and reduce production costs. The second section 2312 of the first part 231 and the second section 2312 of the second part 232 are arranged to form a gap 236, and the flow cavity 111 is connected to the accommodating cavity 235 through the gap 236. In this way, the internal dimensions of the slider component 23 can be reduced, which facilitates miniaturization design.

[0052] The outer diameter of the first section 2311 is greater than the outer diameter of the second section 2312, and the guide frame 222 is set on the outer side of the second section 2312. When the first section 2311 is impacted by the medium, it will tilt, and the guide frame 222 can abut against the first section 2311, and the guide frame 222 and the slider component 23 can limit the rotation of each other. In the first embodiment, the second section 2312 of the first part 231 and the second section 2312 of the second part 232 abut against each other to further prevent rotation. In the second embodiment, the guide frame 222 and the second section 2312 are spaced apart so that the gap 236 is connected to the flow cavity 111.

[0053] See also Figure 2 The valve core assembly 20 also includes a piston component 21, which is disposed in the driving portion 19 to isolate the first chamber 112 from the second chamber 113.

[0054] The piston component 21 includes a bowl-shaped piston bowl 211, the outer wall of the piston bowl 211 can abut against the inner wall of the valve cavity 11, so that the piston component 21 can slide in the valve cavity 11 in a sealed manner. The piston bowl 211 is made of polytetrafluoroethylene.

[0055] The piston bowl 211 includes a first bowl 2111 and a second bowl 2112, both of which are bowl-shaped. The piston component 21 also includes an intermediate baffle 212, and the first bowl 2111 and the second bowl 2112 are respectively arranged on both sides of the intermediate baffle 212 and are arranged opposite to each other. The intermediate baffle 212 plays a role in connecting and supporting the first bowl 2111 and the second bowl 2112.

[0056] The piston component 21 further includes a first baffle 213 and a second baffle 214. The first baffle 213 is disposed in the first bowl 2111 and in the first cavity 112. The second baffle 214 is disposed in the second bowl 2112 and in the second cavity 113. The connecting rod 221 passes through the first baffle 213 and the second baffle 214 respectively. The first baffle 213 can abut against the middle end cover 15 and play a stopper role when closing the valve. The second baffle 214 can abut against the second end cover 17 and play a stopper role when opening the valve. The first baffle 213, the first bowl 2111, the middle baffle 212, the second bowl 2112 and the second baffle 214 are connected by screws or rivets.

[0057] A first protrusion 2131 is provided on the side of the piston component 21 toward the middle end cover 15. When the piston component 21 moves toward the direction close to the first connecting port 101 and the second connecting port 102, the first protrusion 2131 can abut against the middle end cover 15, thereby serving as a stopper when the valve is closed; and / or, a second protrusion 2141 is provided on the side of the piston component 21 toward the second end cover 17. When the piston component 21 moves toward the direction close to the second end cover 17, the second protrusion 2141 can abut against the second end cover 17, thereby serving as a stopper when the valve is opened.

[0058] In this embodiment, since the first baffle 213 and the second baffle 214 are disposed on both sides of the piston bowl 211 , the first protrusion 2131 and the second protrusion 2141 are disposed on the first baffle 213 and the second baffle 214 , respectively.

[0059] The first protrusion 2131 is annular, and a first throttle hole 2132 is provided on the side of the first protrusion 2131, through which the medium can enter between the middle end cover 15 and the piston component 21. When the solenoid valve 100 is in a closed state and needs to be opened, the medium entering the first chamber 112 from the first capillary 131 can enter between the middle end cover 15 and the piston component 21 from the first throttle hole 2132, thereby increasing the contact area between the medium and the piston component 21, so as to push the piston component 21 to move more smoothly.

[0060] The second protrusion 2141 is annular, and a second throttle hole 2142 is formed on the side of the second protrusion 2141, through which the medium can enter between the piston component 21 and the second end cover 17. When the solenoid valve 100 is in an open state and needs to be closed, the medium entering the second chamber 113 from the second capillary 141 can enter between the piston component 21 and the second end cover 17 from the second throttle hole 2142, thereby increasing the contact area between the medium and the piston component 21, so as to push the piston component 21 to move more smoothly.

[0061] The piston component 21 further includes a first elastic member 215, which is disposed in the piston bowl 211 and abuts against the inner wall of the piston bowl 211. The first elastic member 215 can enhance the sealing effect of the piston bowl 211. In this embodiment, there are two first elastic members 215, which are disposed in the first bowl 2111 and the second bowl 2112 respectively.

[0062] Preferably, the first elastic member 215 is an annular toothed spring, which can enhance elasticity.

[0063] The solenoid valve 100 further includes a pilot valve 30, which is disposed outside the driving unit 19 and connected to the first capillary tube 131 and the second capillary tube 141. The pilot valve 30 is switched to control the pressure difference on both sides of the piston component 21, thereby pushing the piston component 21.

[0064] The present invention further provides an air conditioning unit, comprising the above-mentioned reversible solenoid valve 100.

[0065] During operation, when the solenoid valve 100 needs to be closed, the pilot valve 30 is switched to allow the high-pressure medium to flow from the second capillary tube 141 into the second chamber 113, and the medium in the first chamber 112 flows out from the first capillary tube 131, thereby pushing the piston component 21 to move toward the direction close to the main body 18, and the slider component 23 blocks the first communication port 101 and the second communication port 102; when the solenoid valve 100 needs to be opened, the pilot valve 30 is switched to allow the high-pressure medium to flow from the first capillary tube 131 into the first chamber 112, and the medium in the second chamber 113 flows out from the second capillary tube 141, thereby pushing the piston component 21 to move toward the direction away from the main body 18, and the slider component 23 releases the blockage of the first communication port 101 and the second communication port 102. When the air-conditioning unit switches from the cooling mode to the heating mode or from the heating mode to the cooling mode, the flow direction of the medium will be reversed, and the solenoid valve 100 can still work normally.

[0066] The present invention separates the driving part 19 of the valve body 10 from the main body 18 , so that the middle end cover 15 can be fixed to the driving part 19 first, and then the sealing ring 153 and other parts on the middle end cover 15 can be installed, which is convenient for installation.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A reversible solenoid valve, comprising a valve body (10) and a valve core assembly (20), wherein the valve body (10) is provided with a first communication port (101) and a second communication port (102) on both sides thereof, the valve body (10) having a valve cavity (11), the valve core assembly (20) being arranged in the valve cavity (11), and the valve core assembly (20) being able to slide in the valve cavity (11) so as to connect or disconnect the first communication port (101) and the second communication port (102); It is characterized in that The valve body (10) comprises a main body (18) and a driving part (19), the main body (18) is connected to the driving part (19), a part of the valve core assembly (20) is located in the main body (18), and another part of the valve core assembly (20) extends into the driving part (19), and the main body (18) and the driving part (19) are arranged separately; An intermediate end cover (15) is provided at one end of the driving part (19) close to the main part (18), the driving part (19) is connected to the intermediate end cover (15), the intermediate end cover (15) is provided with a mounting hole (151), the valve core assembly (20) is inserted into the mounting hole (151), the inner wall of the mounting hole (151) is provided with a sealing groove (152), a sealing ring (153) is provided in the sealing groove (152), and the sealing ring (153) can abut against the valve core assembly (20); the intermediate end cover (15) comprises a cover body (155) and a guide sleeve (156) connected to each other, the cover body (155) is arranged outside the guide sleeve (156) and is welded and fixed to the inner wall of the driving part (19), the valve core assembly (20) is inserted into the guide sleeve (156), and the cover body (155) and the guide sleeve (156) are separately arranged.

2. The reversible solenoid valve according to claim 1, It is characterized in that A solder groove (154) is provided on the outer side wall of the middle end cover (15).

3. The reversible solenoid valve according to claim 1, It is characterized in that The valve core assembly (20) comprises a piston component (21), and the piston component (21) is arranged on a side of the intermediate end cover (15) away from the first connecting port (101); the valve chamber (11) comprises a first chamber (112) and a second chamber (113), and the first chamber (112) is located between the intermediate end cover (15) and the piston component (21), and the second chamber (113) is located on a side of the piston component (21) away from the intermediate end cover (15); the reversible solenoid valve also comprises a pilot valve (30), and a third connecting port (13) and a fourth connecting port (14) are provided on the driving part (19), and the third connecting port (13) is connected to the first chamber (112), and the fourth connecting port (14) is connected to the second chamber (113), and the pilot valve (30) is connected to the third connecting port (13) and the fourth connecting port (14), respectively.

4. The reversible solenoid valve according to claim 1, It is characterized in that The valve core assembly (20) further comprises a slider component (23), wherein the slider component (23) is arranged close to the first communication port (101), and the slider component (23) can slide along the axial direction of the reversible solenoid valve to block the first communication port (101) and the second communication port (102).

5. The reversible solenoid valve according to claim 4, It is characterized in that The slider component (23) comprises a first portion (231) and a second portion (232), wherein the first portion (231) is arranged close to the first connecting port (101), and the second portion (232) is arranged close to the second connecting port (102), and the first portion (231) and the second portion (232) are arranged opposite to each other to form a receiving cavity (235), wherein a second elastic member (233) is arranged in the receiving cavity (235), and one end of the second elastic member (233) abuts against the first portion (231), and the other end abuts against the second portion (232).

6. The reversible solenoid valve according to claim 5, It is characterized in that The first part (231) and the second part (232) both include a first section (2311) and a second section (2312); the first section (2311) of the first part (231) is disposed close to the first connecting port (101); the first section (2311) of the second part (232) is disposed close to the second connecting port (102); the second section (2312) of the first part (231) is sleeved on the outer side of the second section (2312) of the second part (232); A balancing hole (234) is provided on the first part (231), and the accommodating cavity (235) is communicated with the interior of the main body (18) through the balancing hole (234); or, the second section (2312) of the second part (232) is sleeved on the outside of the second section (2312) of the first part (231), and a balancing hole (234) is provided on the second part (232), and the accommodating cavity (235) is communicated with the interior of the main body (18) through the balancing hole (234).

7. The reversible solenoid valve according to claim 5, It is characterized in that The first part (231) and the second part (232) have the same structure and size, respectively; the first part (231) and the second part (232) are spaced apart to form a gap (236); the accommodating cavity (235) is connected to the interior of the main body (18) through the gap (236).

8. An air conditioning unit, It is characterized in that Comprising a reversible solenoid valve as described in any one of claims 1-7.

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