Direct-driven linkage four-way valve

Abstract

The utility model discloses a direct-driven linkage four-way valve, and belongs to the technical field of heating ventilation air conditioning system accessories. The valve mainly comprises a valve body communicated with a ventilation pipe D, a ventilation pipe C, a ventilation pipe S and a ventilation pipe E in a sealed mode. A power source containing space used for containing a driving unit and a valve element air chamber space forming an independent sealed space are arranged in the valve body. A reversing valve element is installed in the valve element air chamber space and provided with two relatively independent valve element air chambers. The driving unit drives the reversing valve element to rotate by a fixed angle in the forward direction or the reverse direction, so that the D ventilation pipe, the C ventilation pipe and the E ventilation pipe are communicated with one valve element air chamber, and meanwhile the S ventilation pipe, the E ventilation pipe and the C ventilation pipe are communicated with the other valve element air chamber. The power source containing space and the valve element air chamber space forming the independent closed space are integrated in the valve body, the whole structural design is simple and small, performance is stable, reliability is high, installation is flexible, and the valve can be integrated in various HVAC systems.

Description

Technical Field

[0001] The utility model belongs to the technical field of HVAC system accessories. Specifically, it relates to a direct-drive linkage four-way valve that integrates a power source accommodating space and a valve core air chamber space that constitutes an independent enclosed space in a valve body, changes the flow direction of the refrigerant by driving the reversing valve core to rotate, has a fast switching response speed, high reversing accuracy, a simple and compact structural design, is free of traditional internal leakage, air cross-talk, and slider "stuck" phenomena, has stable performance, high reliability, flexible installation, and can be integrated into various HVAC systems. Background Art

[0002] A four-way valve is a crucial component in heating, ventilation, and air conditioning (HVAC) systems, especially in heat pump systems that require both cooling and heating functions. By changing the flow of refrigerant, it enables the system to switch between cooling and heating modes to adapt to different seasons or environmental requirements.

[0003] The Chinese patent with authorization announcement number CN218670772U, authorization announcement date 2023.03.21, and invention name four-way valve discloses a four-way valve structure which is the common four-way valve currently used in the market. It mainly includes a first connecting pipe, a first connecting port and a main valve body. A valve cavity is provided in the main valve body. One end of the first connecting pipe is connected to the exhaust end of the compressor, and the other end is connected to the main valve body and connected to the valve cavity through the first connecting port. A sliding valve assembly is provided in the valve cavity. The sliding valve assembly can move along the axial direction of the main valve body to realize the reversing of the four-way valve. A flow-blocking structure is also provided at one end of the sliding valve assembly close to the first connecting port, and a first seal and a second seal are provided on the end face of the flow-blocking structure close to the first connecting pipe. When the sliding valve assembly moves to a first preset position along the axial direction of the main valve body, the flow-blocking structure can drive the first sealing member to move toward or away from the first connecting port to block or open the first connecting port. When the sliding valve assembly moves to a second preset position along the axial direction of the main valve body, the flow-blocking structure can drive the second sealing member to move toward or away from the first connecting port to block or open the first connecting port. A first connecting strip is provided between the first sealing member and the second sealing member, and one end face of the first sealing member close to the first connecting port, one end face of the second sealing member close to the first connecting port and one end face of the first connecting strip close to the first connecting port are located on the same plane.

[0004] As can be seen from this, the traditional four-way valve has a complex structural design and a relatively cumbersome operation process. In actual application, traditional four-way valves are prone to failures such as internal leakage, air cross-flow, and slider jamming, which greatly affect the stable operation of the entire heating, ventilation and air conditioning (HVAC) system. In addition, traditional four-way valves are large in size and take up a lot of space. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies in the existing technology and provide a direct-drive linkage four-way valve that integrates a power source accommodating space and a valve core air chamber space that constitutes an independent enclosed space in the valve body, changes the flow direction of the refrigerant by driving the reversing valve core to rotate, has a fast switching response speed, high reversing accuracy, a simple and compact structural design, is free of traditional internal leakage, air cross-talk, and slider "stuck" phenomena, has stable performance, high reliability, flexible installation, and can be integrated into various HVAC systems.

[0006] The utility model is realized through the following technical solutions:

[0007] A direct-drive linkage four-way valve, comprising a valve body in sealed communication with a D vent pipe, a C vent pipe, an S vent pipe, and an E vent pipe, wherein the valve body is provided with a power source accommodation space for accommodating a drive unit and a valve core air chamber space constituting an independent sealed space;

[0008] A reversing valve core driven by the driving unit is installed in the valve core air chamber space, and two relatively independent valve core air chambers are provided on the reversing valve core;

[0009] The driving unit drives the reversing valve core to rotate forward or reverse at a fixed angle, so that the D vent pipe, C vent pipe / E vent pipe is connected to one of the valve core air chambers, and at the same time the S vent pipe, E vent pipe / C vent pipe is connected to the other valve core air chamber.

[0010] Preferably, the D vent pipe, the C vent pipe, the S vent pipe, and the E vent pipe are in sealed communication with the valve body along the circumferential direction of the reversing valve core.

[0011] Preferably, the valve core spine between the two valve core air chambers is tightly connected to the inner wall of the valve body.

[0012] Preferably, an axially arranged spine sealing strip is fixedly mounted on the spine of the valve core.

[0013] Preferably, the reversing valve core forms an independent closed space in the valve core air chamber space by installing valve core sealing rings at both ends.

[0014] Preferably, the valve core sealing ring and the spine sealing strip are integrated into an integral structure.

[0015] Preferably, the driving unit is a reduction motor; the end of the driving shaft of the driving unit has a D-shaped cross-section, and the reversing valve core is provided with a D-shaped groove adapted to the driving shaft.

[0016] Preferably, the power source accommodating space and the valve core air chamber space are bounded by a drive unit support seat, and the drive unit support seat is tightly connected to the inner wall of the valve body.

[0017] Preferably, the driving unit support seat is sealedly connected to the inner wall of the valve body by installing multiple support sealing rings in the circumferential direction.

[0018] Preferably, the valve body comprises a valve housing and end covers sealed at both ends of the valve housing;

[0019] A valve core base is provided between the reversing valve core and the adjacent end cover, a guide block is provided on the side of the valve core base, and a guide groove adapted to the guide block is provided on the inner wall of the valve housing.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. The utility model integrates the power source accommodation space and the valve core air chamber space that constitutes an independent closed space in the valve body, achieving good sealing performance of the valve core air chamber space at a very low cost. The entire structural design is simple and compact, without traditional internal leakage, air cross-contamination, and slider "stuck" phenomena. It has stable performance, high reliability, flexible installation, and can be integrated into various HVAC systems.

[0022] 2. The utility model changes the flow direction of the refrigerant by driving the reversing valve core to rotate, with fast switching response speed and high reversing accuracy. The reversing valve core structure is simple in design and easy to manufacture.

[0023] 3. The reversing valve core of the utility model has a simple and reasonable structure, the two valve core air chambers have good sealing performance, and it is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 .

[0025] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 .

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0027] Figure 4 It is a schematic diagram of the explosion structure of the utility model.

[0028] Figure 5 This is a schematic diagram of the reversing valve core structure of the utility model Figure 1 .

[0029] Figure 6 This is a schematic diagram of the reversing valve core structure of the utility model Figure 2 .

[0030] In the figure: 1. Valve body; 11. Valve shell; 111. Guide groove; 12. End cover; 31. Drive unit; 32. Drive unit support seat; 33. Support seal ring; 4. Reversing valve core; 41. Valve core air chamber; 42. Valve core spine; 43. Back seal strip; 44. Valve core seal ring; 45. Valve core base; 451. Guide block; 46. D-type groove; 51. D vent pipe; 52. C vent pipe; 53. S vent pipe; 54. E vent pipe. DETAILED DESCRIPTION

[0031] In order to enable readers to better understand the design purpose of the present invention, the technical solution of the present invention is further described below in conjunction with the embodiments. It should be noted that the directional nouns that may be involved in the following paragraphs, including but not limited to "up, down, left, right, front, back", etc., are based on the visual directions shown in the corresponding drawings of the specification, and should not be regarded as limiting the scope of protection or technical solution of the present invention. Its purpose is only to facilitate those skilled in the art to better understand the technical solution created by the present invention.

[0032] In the description of this specification, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example 1

[0034] like Figures 1 to 6 A direct-drive, linked four-way valve includes a valve body 1 in sealed communication with the D vent pipe 51, C vent pipe 52, S vent pipe 53, and E vent pipe 54. The valve body 1 includes a power source space for accommodating the drive unit 31 and a valve core air chamber space that forms an independent, sealed space. A reversing valve core 4, driven by the drive unit 31, is mounted within the valve core air chamber space. The reversing valve core 4 is provided with two relatively independent valve core air chambers 41; that is, the two valve core air chambers 41 are not interconnected, each forming an independent, sealed space. The drive unit 31 drives the reversing valve core 4 to rotate forward or reverse by a fixed angle, connecting the D vent pipe 51, C vent pipe 52, or E vent pipe 54 to one of the valve core air chambers 41, while simultaneously connecting the S vent pipe 53, E vent pipe 54, or C vent pipe 52 to the other valve core air chamber 41.

[0035] The operating process of this embodiment is as follows: Under the control of an external controller, the drive unit 31 drives the reversing valve core 4 via the drive shaft to rotate forward or reverse by a predetermined fixed angle. The rotation of the reversing valve core 4 causes the positions of the two valve core air chambers 41 to change accordingly. Specifically, after rotation, the D vent pipe 51, the C vent pipe 52, and the E vent pipe 54 are connected to one of the valve core air chambers 41, while the S vent pipe 53, the E vent pipe 54, and the C vent pipe 52 are connected to the other valve core air chamber 41. Generally speaking, in cooling mode, the D vent pipe is connected to the C vent pipe, and the E vent pipe is connected to the S vent pipe; in heating mode, the D vent pipe is connected to the E vent pipe, and the C vent pipe is connected to the S vent pipe. This embodiment switches the air conditioning system between cooling and heating modes by driving the reversing valve core 4 to rotate at a fixed angle. Specifically, assuming that at this time, after forward rotation, the two valve core air chambers make "D vent pipe connected to C vent pipe, S vent pipe connected to E vent pipe", and the air conditioner is in cooling mode; when it is necessary to switch to heating mode, the drive unit is used to drive the reversing valve core 4 to rotate in the opposite direction, and the positions of the two valve core air chambers change. At this time, "D vent pipe is connected to E vent pipe, S vent pipe is connected to C vent pipe", so the mode switching of the air conditioner and other systems can be quickly realized.

[0036] This embodiment integrates a power source accommodation space and a valve core air chamber space that constitutes an independent enclosed space in the valve body. The entire structural design is simple, compact and unique, and achieves good sealing performance of the valve core air chamber space at an extremely low cost. It is free of traditional internal leakage, air cross-talk, and slider "stuck" phenomena, and has stable performance, high reliability, flexible installation, and can be integrated into various HVAC systems.

[0037] This embodiment changes the flow direction of the refrigerant by driving the reversing valve core to rotate, has a fast switching response speed and high reversing accuracy, and the reversing valve core has a simple structural design and is easy to manufacture.

[0038] Example 2

[0039] Based on Example 1, this example continues to describe in detail the technical features involved and the functions and roles played by the technical features in the present utility model, so as to help technicians in this field fully understand the technical solution of the present utility model and reproduce it.

[0040] like Figures 1 to 6A direct-drive, linked four-way valve includes a valve body 1 in sealed communication with the D vent pipe 51, C vent pipe 52, S vent pipe 53, and E vent pipe 54. The valve body 1 includes a power source space for accommodating the drive unit 31 and a valve core air chamber space that forms an independent, sealed space. A reversing valve core 4, driven by the drive unit 31, is mounted within the valve core air chamber space. The reversing valve core 4 is provided with two relatively independent valve core air chambers 41; that is, the two valve core air chambers 41 are not interconnected, each forming an independent, sealed space. The drive unit 31 drives the reversing valve core 4 to rotate forward or reverse by a fixed angle, connecting the D vent pipe 51, C vent pipe 52, or E vent pipe 54 to one of the valve core air chambers 41, while simultaneously connecting the S vent pipe 53, E vent pipe 54, or C vent pipe 52 to the other valve core air chamber 41.

[0041] In this embodiment, the D vent pipe 51 , the C vent pipe 52 , the S vent pipe 53 , and the E vent pipe 54 are in sealed communication with the valve body 1 along the circumferential direction of the reversing valve core 4 .

[0042] In this embodiment, the valve core spine 42 between the two valve core air chambers 41 is tightly connected to the inner wall of the valve body 1. An axially arranged spine sealing strip 43 is fixedly mounted on the valve core spine 42. Specifically, a groove is defined on the valve core spine 42, and the spine sealing strip 43 is embedded in the groove. The spine sealing strip 43 protrudes from the surface of the valve core spine 42. This simple structural design makes it easy to manufacture.

[0043] In this embodiment, the reversing valve core 4 forms an independent, enclosed space within the valve core air chamber by installing valve core sealing rings 44 at both ends. The valve core sealing ring 44 and the back sealing strip 43 are integrated into a one-piece structure. This integrated design further reduces manufacturing complexity and simplifies the production process.

[0044] In this embodiment, the drive unit 31 is a reduction motor, such as a combination of a motor and a planetary reduction gear set. The end of the motor's drive shaft has a D-shaped cross-section, and the reversing valve core 4 is provided with a D-shaped slot 46 that matches this. The D-hole connection structure offers a simple design, easy assembly, low manufacturing cost, and flexible movement and connection.

[0045] In this embodiment, the power source housing space and the valve core air chamber space are separated by a drive unit support seat 32, which is tightly connected to the inner wall of the valve body 1. Specifically, the drive unit support seat 32 is sealed to the inner wall of the valve body 1 by installing multiple support seals 33 along its circumference. This structural design is simple and rational, and its implementation cost is low.

[0046] The valve body 1 of this embodiment includes a valve housing 11 and end caps 12 sealing both ends of the valve housing 11. A valve core base 45 is provided between the reversing valve core 4 and the adjacent end caps 12. A guide block 451 is provided on the side of the valve core base 45. A guide groove 111 is formed on the inner wall of the valve housing 11 to accommodate the guide block 451. This structural design facilitates product assembly and achieves high assembly precision, strong product stability, high reliability, and high product quality.

[0047] In addition to the advantages of embodiment 1, this embodiment also has the advantages of a simple and reasonable structure of the reversing valve core, good sealing performance of the two valve core air chambers, and easy implementation.

[0048] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications in the shape, structure, features and spirit of the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A direct-drive linkage four-way valve, comprising a valve body (1) in sealed communication with a D vent pipe (51), a C vent pipe (52), an S vent pipe (53), and an E vent pipe (54), characterized in that: The valve body (1) is provided with a power source accommodation space for accommodating the drive unit (31) and a valve core air chamber space forming an independent closed space; A reversing valve core (4) driven by the driving unit (31) is installed in the valve core air chamber space, and two relatively independent valve core air chambers (41) are provided on the reversing valve core (4); The driving unit (31) drives the reversing valve core (4) to rotate forward or backward at a fixed angle, so that the D vent pipe (51), the C vent pipe (52) / the E vent pipe (54) are connected to one of the valve core air chambers (41), and at the same time, the S vent pipe (53), the E vent pipe (54) / the C vent pipe (52) are connected to the other valve core air chamber (41); The valve core spine (42) between the two valve core air chambers (41) is tightly connected to the inner wall of the valve body (1); an axially arranged spine sealing strip (43) is fixedly mounted on the valve core spine (42); the reversing valve core (4) forms an independent closed space in the valve core air chamber space by mounting valve core sealing rings (44) at both ends; the valve core sealing ring (44) and the spine sealing strip (43) are integrated into an integrated structure; The power source accommodating space and the valve core air chamber space are bounded by the drive unit support seat (32), and the drive unit support seat (32) is tightly connected to the inner wall of the valve body (1); the drive unit support seat (32) is tightly connected to the inner wall of the valve body (1) by installing multiple support sealing rings (33) in the circumferential direction.

2. The direct-drive linkage four-way valve according to claim 1, characterized in that: The D vent pipe (51), the C vent pipe (52), the S vent pipe (53), and the E vent pipe (54) are in sealed communication with the valve body (1) along the circumferential direction of the reversing valve core (4).

3. The direct-drive linkage four-way valve according to claim 1, characterized in that: The drive unit (31) is a reduction motor; the end of the drive shaft of the drive unit (31) has a D-shaped cross-section, and the reversing valve core (4) is provided with a D-shaped groove (46) adapted to the drive shaft.

4. The direct-drive linkage four-way valve according to claim 1, characterized in that: The valve body (1) comprises a valve housing (11) and end covers (12) sealed at both ends of the valve housing (11); A valve core base (45) is provided between the reversing valve core (4) and the adjacent end cover (12), a guide block (451) is provided on the side of the valve core base (45), and a guide groove (111) adapted to the guide block (451) is provided on the inner wall of the valve housing (11).

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