CN213273296U - Valve body assembly and air conditioning equipment - Google Patents

Abstract

The utility model provides a valve body assembly and air conditioning equipment, wherein the valve body assembly comprises a one-way valve, a four-way valve and a switching pipe, the one-way valve is connected with the four-way valve through the switching pipe, and the switching pipe is an aluminum pipe; and the one-way valve and/or the four-way valve and the adapter tube are welded and fixed. The structure of the valve body assembly provided by the utility model is more compact, the installation operator can directly connect the valve body assembly with the compressor, the indoor heat exchanger and the outdoor heat exchanger through pipelines, the step of erecting a connecting pipeline between the check valve and the four-way valve is omitted, and the structure of the refrigerant circulating system is more compact; in addition, the aluminum adapter tube has a lower melting point, can absorb welding heat in a short time, and is in hot-melt combination with the one-way valve or the four-way valve, so that the welding time is shorter, the adapter tube can be prevented from absorbing a large amount of heat due to overlong welding time, and the heat is transmitted to the plastic element inside the one-way valve or the four-way valve, and the damage of welding operation to the one-way valve or the four-way valve is prevented.

Description

Valve body assembly and air conditioning equipment

Technical Field

The utility model relates to a heat exchange equipment technical field especially relates to a valve body subassembly and air conditioning equipment.

Background

A one-way valve is adopted in a refrigerant circulating system in the existing air conditioning equipment and is connected with a four-way valve through an intermediate pipeline, so that the phenomenon that the refrigerant reversely flows backwards due to pressure change or pipeline oscillation in the refrigerant circulating system when the air conditioning equipment runs is avoided. In the prior art, an intermediate pipeline is arranged between the one-way valve and the four-way valve and is respectively and fixedly connected to the one-way valve and the four-way valve in a welding mode. However, the welding of the intermediate pipeline is usually manual flame welding or furnace brazing, copper-copper welding, copper-steel welding or steel-steel welding is generally adopted between the intermediate pipeline and the check valve or the four-way valve, the welding process is complex, the cost for connecting the check valve and the four-way valve is increased, the time required by the welding operation is long, the space occupied by the refrigerant circulation system is increased by the intermediate pipeline, and the air conditioning equipment is too large in size and difficult to be arranged in some occasions with narrow environments or limited placing space.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for an improved valve body assembly and an air conditioning apparatus.

The utility model provides a valve body component, which comprises a one-way valve, a four-way valve and a transfer pipe, wherein the one-way valve is connected with the four-way valve through the transfer pipe, and the transfer pipe is an aluminum pipe; and the one-way valve and/or the four-way valve and the adapter tube are welded and fixed.

In one embodiment of the present invention, one end of the check valve extends into the adapter tube and is fixedly connected to the adapter tube; and/or a first connecting pipe of the four-way valve extends into the switching pipe and is fixedly connected with the switching pipe

So set up, the internal face of switching pipe can play the limiting displacement to the first takeover of check valve and cross valve, therefore it is more convenient to carry out welding operation between check valve or cross valve and switching pipe, need not to use other external instrument or anchor clamps centre gripping check valve or cross valve.

The utility model discloses an in the embodiment, check valve or adapter tube are provided with first spacing portion, and first spacing portion is used for restricting the degree of depth of butt joint between check valve and the adapter tube.

So set up, can avoid the check valve too much to stretch into in the adapter tube, perhaps avoid the adapter tube too much to stretch into in the check valve to guarantee the unobstructed nature of refrigerant flow in check valve and adapter tube.

The utility model discloses an in the embodiment, first spacing portion includes first spacing lug, and first spacing lug is located the periphery wall of check valve or the inner wall of adapter tube.

So set up, the simple structure of first spacing lug, the restriction check valve is effectual with the switching pipe butt joint degree of depth, and easily the shaping is acquireed.

The utility model discloses an among the embodiment, the cross valve is equipped with the spacing portion of second with the adapter tube, and the spacing portion of second is used for restricting the degree of depth of butt joint between cross valve and the adapter tube.

So set up, can avoid the first takeover of cross valve too much to stretch into in the switching tube, perhaps avoid the switching tube too much to stretch into in the first takeover of cross valve to guarantee the unobstructed nature that the refrigerant flows in switching tube and cross valve.

The utility model discloses an in the embodiment, the spacing portion of second includes the spacing lug of second, and the spacing lug of second is located the periphery wall of the first takeover of cross valve or the inner wall of switching pipe.

So set up, the simple structure of the spacing lug of second, the restriction cross valve is effectual with the switching pipe butt joint degree of depth, easily the shaping is acquireed.

In an embodiment of the present invention, the switching tube is a bent tube, the switching tube includes a first switching portion and a second switching portion, the first switching portion is connected to the check valve, and the second switching portion is connected to the four-way valve; the first transfer part and the second transfer part are in smooth transition.

So set up, the shape of the inside runner of adapter tube is more smooth-going, can reduce the refrigerant resistance that flows in the adapter tube, can reduce the impact force of high-pressure refrigerant to the adapter tube simultaneously to guarantee the stability of valve body subassembly at air conditioning equipment operation in-process, reduce the vibration impact of refrigerant to the valve body subassembly.

The utility model discloses an in one embodiment, the valve body subassembly still includes the support element, and the one end fixed connection of support element is in the check valve, and other end fixed connection is in the cross valve.

So set up, check valve, cross valve and support element have constituted frame-type valve body assembly jointly, and its whole steadiness is better, and the resonant frequency of check valve and cross valve further improves, has reduced the risk that the junction between check valve and the cross valve breaks under the external vibration or the impact of air conditioning equipment.

In an embodiment of the present invention, the main valve body of the one-way valve and the four-way valve are disposed in parallel.

So set up, the valve body subassembly changes in the assembly in air conditioning equipment's refrigerant circulation system, need not to add the complicated connecting line of shape structure, and the pipeline arrangement in the air conditioning equipment is regular orderly more.

The utility model also provides an air conditioning equipment, including the valve body subassembly of any one in the above-mentioned.

The utility model provides a valve body subassembly and air conditioning equipment, through add the switching pipe between check valve and cross valve, make the structure of valve body subassembly compacter, connect and communicate through the switching pipe in advance between check valve and the cross valve and form the valve body subassembly, installation operating personnel can directly be connected the valve body subassembly through pipeline and compressor and indoor heat exchanger and outdoor heat exchanger, thereby accomplish the installation of refrigerant circulation system, more be convenient for accomplish the installation operation fast, also make refrigerant circulation system structure compacter simultaneously, reduce the space volume that refrigerant circulation system occupied in air conditioning equipment; in addition, the aluminum adapter tube has a lower melting point, can absorb welding heat in a short time, and is in hot-melt combination with the one-way valve or the four-way valve, so that the welding speed is higher, the required time is shorter, the problem that the adapter tube absorbs a large amount of heat due to overlong welding time can be avoided, and the heat is conducted to a plastic element inside the one-way valve or the four-way valve, so that the damage of the welding operation on the one-way valve or the four-way valve is prevented, and the one-way valve and the four-way valve can still normally run after.

Drawings

Fig. 1 is a schematic structural diagram of a valve body assembly according to an embodiment of the present invention;

FIG. 2 is an exploded view of the valve body assembly of FIG. 1;

FIG. 3 is a schematic view of the valve body assembly of FIG. 1 from a first perspective;

FIG. 4 is a schematic view of the valve body assembly of FIG. 3 taken along plane D-D;

fig. 5 is a schematic structural view of a support member according to a first embodiment of the present invention;

fig. 6 is a schematic structural view of a support member according to a second embodiment of the present invention;

fig. 7 is a schematic structural view of a support member according to a third embodiment of the present invention;

FIG. 8 is a schematic view of the support member shown in FIG. 7 from a first perspective;

fig. 9 is a schematic structural view of a one-way valve outlet connection pipe according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first connection pipe of a four-way valve according to an embodiment of the present invention.

100. A valve body assembly; 10. a one-way valve; 11. an outlet connecting pipe of the one-way valve; 20. a four-way valve; 21. a main valve body; 211. a first piston; 212. a second piston; 213. a first pressure chamber; 214. a second pressure chamber; 215. a carriage; 216. a reversing slide block; 217. a communication channel; 22. a first adapter tube; 23. a second adapter tube; 24. a third connection pipe; 25. a fourth connection pipe; 26. a pilot valve seat; 27. a pilot valve; 30. a transfer tube; 31. a first transition portion; 32. a second transfer part; 40. a support element; 41. a first circular groove; 42. a second circular groove; 43. a support plate; 44. a second bending edge; 441. a third bent portion; 442. a fourth bent portion; 445. bending and opening; 446. electrically welding a convex bubble; 51. a first limit bump; 52. a second limit bump; 53. a conical limiting surface; 54. a first plug hole; 55. a second plug hole; 61. a first capillary tube; 62. a second capillary tube; 63. a third capillary tube; 64. a fourth capillary.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a valve body assembly 100 according to an embodiment of the present invention; FIG. 2 is an exploded view of the valve body assembly 100 of FIG. 1; FIG. 3 is a schematic view of the valve body assembly 100 of FIG. 1 from a first perspective; FIG. 4 is a schematic view of the valve body assembly 100 of FIG. 3 taken along plane D-D.

The air conditioning equipment comprises a refrigerant circulating system for flowing of a refrigerant, wherein the refrigerant circulating system is a closed refrigerant loop and mainly comprises a compressor, a reversing assembly, an outdoor heat exchanger, a throttling assembly and an indoor heat exchanger; the reversing component usually adopts a four-way valve, the throttling component usually adopts a throttling valve, and the refrigerant exchanges heat with air in an outdoor heat exchanger or an indoor heat exchanger so as to realize refrigeration or heating. In addition, in order to ensure the service life of the refrigerant circulating system and prevent the refrigerant from impacting the refrigerant circulating system due to the change of the flowing direction of the refrigerant, a check valve is additionally arranged in the refrigerant circulating system, so that the phenomenon of refrigerant backflow in the heating or refrigerating working condition is eliminated. Of course, the refrigerant circulation system may further include auxiliary devices or components having other functions besides the above devices or components, such as a gas-liquid separator, a filtering device, and the like, to ensure the cleanness of the refrigerant.

A one-way valve is adopted in a refrigerant circulating system in the existing air conditioning equipment and is connected with a four-way valve through an intermediate pipeline, so that the phenomenon that the refrigerant reversely flows backwards due to pressure change or pipeline oscillation in the refrigerant circulating system when the air conditioning equipment runs is avoided. In the prior art, an intermediate pipeline is arranged between the one-way valve and the four-way valve and is respectively and fixedly connected to the one-way valve and the four-way valve in a welding mode. However, the welding of the intermediate pipeline is usually manual flame welding or furnace brazing, copper-copper welding, copper-steel welding or steel-steel welding is generally adopted between the intermediate pipeline and the check valve or the four-way valve, the welding process is complex, the cost for connecting the check valve and the four-way valve is increased, the time required by the welding operation is long, the space occupied by the refrigerant circulation system is increased by the intermediate pipeline, and the air conditioning equipment is too large in size and difficult to be arranged in some occasions with narrow environments or limited placing space.

In view of this, the utility model provides a valve body assembly 100, including check valve 10, four-way valve 20 and adapter tube 30, connect through adapter tube 30 between check valve 10 and the four-way valve 20, adapter tube 30 is the aluminum pipe; one of the check valve 10 and the four-way valve 20 is welded and fixed with the adapter tube 30; or, the check valve 10 and the four-way valve 20 are welded and fixed with the adapter tube 30. For convenience of description, the following description will be made in terms of an embodiment in which the check valve 10 and the four-way valve 20 are both welded to the adapter tube 30.

In the existing air conditioning equipment, a pipeline with a longer end is erected between the one-way valve and the four-way valve to be communicated for the flow of a refrigerant, the pipeline can increase the total volume of a refrigerant circulating system, so that the size of the air conditioning equipment, particularly an outdoor unit part, is increased, and because the distance between the one-way valve and the four-way valve is longer, when any one of the two is subjected to vibration impact, the vibration is easily transmitted to the pipeline, the vibration amplitude of the pipeline is increased, and the reliability of the pipeline connection between the one-way valve and the four-way valve cannot be ensured; the valve body assembly 100 provided in the present embodiment realizes the connection and communication between the check valve 10 and the four-way valve 20 through the adapter tube 30, and can significantly reduce the total volume of the refrigerant circulation system, thereby facilitating further reduction of the total volume of the air conditioning equipment, particularly the outdoor unit; the valve body assembly 100 has a more compact structure, and when the check valve 10 or the four-way valve 20 is subjected to vibration or impact, the vibration amplitude of the adapter tube 30 can be reduced, so that poor connection or even breakage between the adapter tube 30 and the check valve 10 or the four-way valve 20 can be reduced.

The valve body assembly 100 is used for forming a refrigerant circulating system in the air conditioning equipment, and one end of the check valve 10, which is relatively far away from the four-way valve 20, is connected and communicated with the compressor through a pipeline and is used for unidirectionally guiding high-pressure refrigerant from the compressor to the four-way valve 20 and stopping the refrigerant from reversely flowing; the four-way valve 20 is connected with the indoor heat exchanger and the outdoor heat exchanger through pipelines and is used for switching the flowing direction of the refrigerant in the refrigerant circulating system, so that the switching between the refrigerating working condition and the heating working condition is realized; the check valve 10 is connected to the four-way valve 20 through a switching tube 30, so that the refrigerant enters the four-way valve 20 from the compressor through the check valve 10.

Specifically, the adapter tube 30 is a bent tube, and two opposite ends thereof include a first adapter portion 31 and a second adapter portion 32, in order to reduce the flow resistance of the refrigerant in the adapter tube 30 and reduce the impact force of the refrigerant on the adapter tube 30, the first adapter portion 31 and the second adapter portion 32 are in smooth transition, and are respectively used for being butted with the check valve 10 and the first adapter 22 of the four-way valve 20, and the first adapter 22 is a D adapter of the four-way valve 20; the butt joint between the first adapter 31 or the second adapter 32 and the check valve 10 or the first adapter 22 may be that the check valve 10 extends into the first adapter 31, or the first adapter 22 extends into the second adapter 32, or the first adapter 31 extends into the check valve 10, or the second adapter 32 extends into the first adapter 22.

In a preferred embodiment of the present invention, the check valve 10 extends into the first transition portion 31 and the first adapter 22 extends into the second transition portion 32. Specifically, one end of the check valve 10 is provided with a check valve outlet connection pipe 11 for the refrigerant to flow out and enter the four-way valve 20, the end of the check valve outlet connection pipe 11 extends into the first transition portion 31 of the transition pipe 30, and the first transition portion 31 and the check valve outlet connection pipe 11 are welded and fixed by means of high-frequency welding or flame welding and the like through aluminum solder.

The high-frequency welding or flame welding has a very high heating speed, and the adapter tube 30 is an aluminum bent tube with a low melting point, so that the aluminum material can absorb heat and melt quickly in a very short time, and the first adapter portion 31 and the one-way valve outlet connection tube 11 are thermally fused by using aluminum solder, so that the time required for welding can be shortened remarkably, and a large amount of heat is prevented from being accumulated and conducted to the one-way valve 10 or the four-way valve 20 due to overlong welding time, so as to avoid burning out or thermally fusing and deforming plastic material elements in the one-way valve 10 or the four-way valve 20, such as a sealing element, a reversing slider 216 in the four-way valve 20, and the welded one-way valve 10 and the four-way valve 20 can still.

The first connection pipe 22 of the four-way valve 20, i.e., the D connection pipe of the four-way valve 20, serves to allow the refrigerant from the check valve 10 to flow into the four-way valve 20. The first adapter tube 22 extends into the second adapter portion 32 of the adapter tube 30 and is welded to the second adapter portion 32 by means of a solder for aluminum, such as high-frequency welding or flame welding.

In a preferred embodiment of the present invention, the first switching portion 31 and the second switching portion 32 of the switching tube 30 are vertically disposed, and the first connecting tube 22 of the four-way valve 20 is vertically disposed with the main valve body 21. When the one-way valve outlet connecting pipe 11 is welded and fixed with the first adapter 31, and the first connecting pipe 22 is welded and fixed with the second adapter 32, the one-way valve 10 is arranged in parallel with the main valve body 21 of the four-way valve 20. So can further reduce the space volume that valve body assembly 100 occupied, further optimize valve body assembly 100's structure, make it more be convenient for set up in refrigerant circulation system to utilize components such as conventional pipeline or elbow to realize and compressor, outdoor heat exchanger or indoor heat exchanger between be connected, therefore the pipeline arrangement in the air conditioning equipment is simple more, regular orderly.

It will be appreciated that in other embodiments, the first transition portion 31 may also extend into the one-way valve outlet connection pipe 11, and the two are welded and fixed together; the second adapter 32 may also extend into the first adapter 22 and be welded and fixed therebetween, and is not limited to the above-mentioned embodiment.

Further, the check valve 10 and the adapter tube 30 are provided with a first limiting part; and/or the four-way valve 20 and the adapter tube 30 are provided with second limiting parts, and the first limiting part and the second limiting part are respectively used for limiting the butt joint depth between the one-way valve 10 and the adapter tube 30 or the butt joint depth between the four-way valve 20 and the adapter tube 30.

Referring to fig. 9 to 10, fig. 9 is a schematic structural view of a check valve outlet connection pipe 11 according to an embodiment of the present invention; fig. 10 is a schematic structural diagram of a first connection pipe 22 of a four-way valve 20 according to an embodiment of the present invention.

Specifically, in one embodiment, the first limiting portion includes a first limiting protrusion 51, the first limiting protrusion 51 is located on a side wall of the check valve outlet adapter 11, the check valve outlet adapter 11 can extend into the first transition portion 31 until the first limiting protrusion 51 abuts against an end surface of the first transition portion 31, and the check valve outlet adapter 11 is stopped from further extending into the first transition portion 31; the second limiting portion comprises a second limiting convex block 52, the second limiting convex block 52 is located on the outer peripheral wall of the first connecting pipe 22 of the four-way valve 20, the first connecting pipe 22 can extend into the first switching portion 31 until the second limiting convex block 52 abuts against the end face of the second switching portion 32, and the first connecting pipe 22 is stopped from further extending into the second switching portion 32.

Of course, the first limiting protrusion 51 and/or the second limiting protrusion 52 may also be disposed on the inner wall surface of the adapter tube 30, and is not limited to the above embodiment; furthermore, the first limiting portion or the second limiting portion may also be other structures besides the limiting protrusion, such as a limiting step, and is respectively disposed on the inner wall of the first adapter portion 31 or the inner wall of the second adapter portion 32, and respectively stops the insertion depth of the one-way valve outlet connection pipe 11 or the first connection pipe 22, as long as the first limiting portion and the second limiting portion can respectively limit the depth of the one-way valve outlet connection pipe 11 and the first connection pipe 22 extending into the adapter pipe 30.

Further, the first limiting part further comprises a conical limiting surface 53, the conical limiting surface 53 is arranged on the periphery of the one-way valve outlet connecting pipe 11, the conical limiting surface 53 is provided with an outer diameter larger than the inner diameter of the first transfer part 31, and the one-way valve outlet connecting pipe 11 can partially extend into the first transfer part 31 until the conical limiting surface 53 abuts against the end surface of the first transfer part 31; as an expanded application of the present embodiment, the second stopper portion may include a tapered stopper surface, and for example, a tapered stopper surface that can abut against the second adapter portion 32 may be provided on the outer periphery of the first adapter tube 22.

Referring to fig. 1 to 2 again, and fig. 5 to 8, fig. 5 is a schematic structural diagram of a supporting element 40 according to a first embodiment of the present invention; fig. 6 is a schematic structural view of a supporting member 40 according to a second embodiment of the present invention; fig. 7 is a schematic structural view of a supporting member 40 according to a third embodiment of the present invention; fig. 8 is a first perspective view of the support member 40 shown in fig. 7.

In a preferred embodiment of the present invention, one end of the support member 40 is welded to the outer peripheral wall of the check valve 10, and the other end is welded to the outer peripheral wall of the main valve body 21 of the four-way valve 20. That is, the check valve 10 and the four-way valve 20 are further fixedly connected through the support element 40 in addition to the pipe connection for the refrigerant to flow, so that the check valve 10, the support element 40 and the four-way valve 20 form a frame structure, the frame structure can improve the resonance frequency of the check valve 10 and the four-way valve 20, and when the air conditioning equipment is subjected to external vibration or impact, the risk of damage to the pipe connection between the check valve 10 and the four-way valve 20 can be reduced, and thus the support element 40 can further improve the anti-vibration performance of the check valve 10 and the four-way valve 20.

Of course, in other embodiments, the supporting element 40 can also be fixed to the check valve 10 and the four-way valve 20 by fastening, etc. for the valve body assembly adopting other connection methods, as long as it can fix the check valve 10 and the four-way valve 20 and can improve the resonant frequency of the check valve 10 and the four-way valve 20, all belong to the equivalent technical solutions made within the innovative gist of the present invention and fall within the protection scope of the present invention.

It is understood that the number of the supporting members 40 may be plural or one. When the support member 40 is plural, the plural support members 40 are arranged at intervals in the axial direction of the check valve 10. The plurality of supporting elements 40 can further improve the firmness of the fixed connection between the check valve 10 and the four-way valve 20, prevent the fixing failure caused by the damage or the loosening of a single supporting element 40, and ensure the assembly reliability of the valve body assembly 100 in the refrigerant circulating system.

Further, the support member 40 includes a support plate 43, one end of the support plate 43 is recessed inward and forms a first circular groove 41, and the shape of the first circular groove 41 is adapted to the shape of a cross section cut along the valve body of the check valve 10 in the radial direction and is attached to the outer peripheral wall of the valve body of the check valve 10; the support member 40 is recessed inwardly from an end thereof opposite to the first circular groove 41 and forms a second circular groove 42, and the second circular groove 42 has a shape corresponding to a shape of a section taken along the radial direction of the main valve body 21 of the four-way valve 20 and is fitted to the outer peripheral wall of the main valve body 21.

With the arrangement, the supporting element 40 has a better fixing effect on the one-way valve 10 and the four-way valve 20, can prevent the one-way valve 10 and the four-way valve 20 from relative dislocation or deflection, and can prevent the supporting element 40 from loosening and shaking relative to the one-way valve 10 or the four-way valve 20, and a stable frame structure is formed among the supporting element 40, the one-way valve 10 and the four-way valve 20, so that a refrigerant circulating system of the air conditioning equipment is more stable.

It should be noted that, two ends of the supporting plate 43 are recessed inwards to form the first circular groove 41 and the second circular groove 42, which is only the expression of the partial structure of the supporting element 40 abutting against the cylindrical outer peripheral surface of the main valve body 21 of the check valve 10 or the four-way valve 20, in other embodiments, two ends of the supporting plate 43 may also be provided with through holes, that is, the supporting plate 43 may be respectively sleeved with the main valve body 21 of the check valve 10 and the four-way valve 20 through the through holes at two ends, and at this time, the first circular groove 41 and the second circular groove 42 are circular grooves formed at the edges of the through holes at two ends of the supporting plate.

Furthermore, the supporting member 40 further includes a first bent edge (not shown) connected to an end of the supporting plate 43, the first bent edge abutting against the outer peripheral wall of the check valve 10; and/or, the supporting member 40 further includes a second bent side 44, the second bent side 44 is connected to an end portion of the supporting plate 43, and the second bent side 44 abuts against an outer peripheral wall of the main valve body 21 of the four-way valve 20.

With this arrangement, the first bent side or the second bent side 44 can increase the area of abutting contact between the support member 40 and the outer peripheral wall of the check valve 10 or the outer peripheral wall of the main valve body 21 of the four-way valve 20, so that the support member 40 can more firmly fix the check valve 10 and the four-way valve 20 while further restricting the rocking or the deflection of the support member 40 with respect to the check valve 10 or the four-way valve 20; in addition, when the support element 40 is welded to the check valve 10 and the main valve body 21, respectively, the first bent edge or the second bent edge 44 can make the support element 40 firmly contact the check valve 10 or the main valve body 21, thereby reducing the micro-motion of the support element 40 caused by thermal deformation.

Specifically, in a preferred embodiment of the present invention, the end of the supporting element 40 includes a second bending edge 44 for abutting against the outer peripheral wall of the main valve body 21, the second bending edge 44 is formed by bending from the end of the supporting plate 43, the second bending edge 44 forms a second circular groove 42 having a semicircular shape or a substantially semicircular shape after being bent relative to the supporting plate 43, and the second bending edge 44 is attached to the cylindrical outer peripheral wall of the main valve body 21.

To facilitate folding over the ends of support element 40 to form first or second bending edges 44, support element 40 is provided with a bend opening intermediate its opposite ends. Specifically, the first bending edge includes a first bending portion and a second bending portion (not shown), and a gap between the first bending portion and the second bending portion is a bending opening; and/or, the second bending edge 44 includes a third bending portion 441 and a fourth bending portion 442, and a gap between the third bending portion 441 and the fourth bending portion 442 is a bending opening.

With such an arrangement, the bending opening can reduce the force required for bending the supporting member 40 and forming the first bending edge or the second bending edge 44, so that the supporting member can be bent to form the first bending edge or the second bending edge 44 more easily and quickly, thereby preventing the material of the supporting plate 43 from being distorted and deformed due to excessive force applied during bending.

Further, the first bending part and the second bending part are respectively located at the same side or two sides of the supporting plate 43; and/or the third bending portion 441 and the fourth bending portion 442 are respectively located at the same side or two sides of the supporting plate 43.

Specifically, in a preferred embodiment of the present invention, the folding directions of the third bent portion 441 and the fourth bent portion 442 are opposite to each other with respect to the supporting plate 43, and after the third bent portion 441 and the fourth bent portion 442 are bent and formed, they are respectively located at two sides of the supporting plate 43. The rocking or deflection of support element 40 relative to main valve body 21 along both sides of support plate 43 is further restricted, thereby significantly improving the stability of the fixation between support element 40 and main valve body 21, facilitating the welding fixation therebetween, and reducing the deflection of support element 40 relative to main valve body 21 during heat fusion.

Further, in order to ensure the welding quality between the support member 40 and the check valve 10 or the four-way valve 20, an electric welding projection 446 is provided on a side of the first bent side relatively close to the check valve 10; and/or, the second bent edge 44 is provided with an electric welding convex bubble 446 at the side relatively close to the four-way valve 20.

Specifically, in a preferred embodiment of the present invention, the electric welding projection 446 is a circular or other shaped protrusion on the surface of the first bending edge or the second bending edge 44, and the protrusion is formed by applying an impact or pressing force to the first bending edge or the second bending edge 44 by a hard tool or material to deform the material of the first bending edge or the second bending edge 44. When the support member 40 is fixed to the check valve 10 and the four-way valve 20 by resistance welding, the electric welding bulb can collect more current and make the concentrated current flow from the first bent side or the second bent side 44 to the outer peripheral wall of the valve body of the check valve 10 or the outer peripheral wall of the main valve body 21, thereby allowing the electric welding bulb to collect a large amount of resistance heat in a short time to rapidly fuse and bond the materials.

It should be noted that the electric welding projection 446 is a process structure feature for facilitating the fixing of the support member 40 and the check valve 10 or the four-way valve 20 by the resistance welding method, and is not a necessary feature of the support member 40, and the support member 40 may not be provided with the electric welding projection 446, and the fixed connection of the check valve 10 and the four-way valve 20 may be realized by the laser welding or the like, and is not limited to the fixed connection by the resistance welding.

The utility model provides a valve body subassembly 100 and air conditioning equipment, through add the switching pipe 30 between check valve 10 and cross valve 20, make the structure of valve body subassembly 100 compacter, connect and communicate through switching pipe 30 in advance between check valve 10 and the cross valve 20 and form valve body subassembly 100, the installation operation personnel can directly be connected valve body subassembly 100 through pipeline and compressor and indoor heat exchanger and outdoor heat exchanger, thereby accomplish the installation of refrigerant circulation system, more be convenient for accomplish the installation operation fast, also make refrigerant circulation system structure compacter simultaneously, reduce the space volume that refrigerant circulation system occupied in air conditioning equipment; in addition, the adapter tube 30 is fixedly connected with the one-way valve 10 or the four-way valve 20 in a welding manner, so that the valve body assembly 100 has better stability and can bear larger impact; in addition, the aluminum adapter tube 30 has a lower melting point, and can absorb welding heat in a short time so as to be thermally fused with the check valve 10 or the four-way valve 20, so that the welding speed is higher, the required time is shorter, the adapter tube 30 can be prevented from absorbing a large amount of heat due to overlong welding time, and the heat can be transmitted to the plastic element inside the check valve 10 or the four-way valve 20, so that the check valve 10 or the four-way valve 20 is prevented from being damaged by welding operation, and the check valve 10 and the four-way valve 20 can still normally operate after welding.

The utility model also provides an air conditioning equipment (not shown), including any one of the aforesaid valve body assembly 100, valve body assembly 100 sets up the refrigerant circulation system (not shown) in air conditioning equipment.

The four-way valve 20 includes a main valve body 21, a first connection pipe 22, a second connection pipe 23, a third connection pipe 24, a fourth connection pipe 25 (i.e., a D pipe, an E pipe, an S pipe, and a C pipe of the four-way valve 20, respectively), a pilot valve seat 26, an electromagnetic coil (not shown), and a pilot valve 27; the pilot valve 27 is fixedly arranged on the pilot valve seat; the first connecting pipe 22, the second connecting pipe 23, the third connecting pipe 24 and the fourth connecting pipe 25 are connected to the main valve body 21 and communicated with the inner cavity of the main valve body 21, the first connecting pipe 22 is communicated with the one-way valve 10 through the adapter pipe 30, the second connecting pipe 23 is connected with the indoor heat exchanger through a pipeline, the third connecting pipe 24 is connected with the compressor through a pipeline, and the fourth connecting pipe 25 is connected with the outdoor heat exchanger through a pipeline; the solenoid controls the pilot valve 27 to open and close by switching on and off the solenoid, and controls or switches the pipeline communication state of the four-way valve 20.

Specifically, an inner cavity is formed in the main valve body 21, a first piston 211 and a second piston 212 are respectively arranged at two ends of the inner cavity, the first piston 211 and the second piston 212 can move in the inner cavity along the axial direction of the main valve body 21, a first pressure cavity 213 is formed by the first piston 211 and the inner wall surface of the main valve body 21 in an enclosing mode at one end of the inner cavity, and a second pressure cavity 214 is formed by the second piston 212 and the inner wall surface of the main valve body 21 in an enclosing mode at the other end of the inner cavity. When the first piston 211 or the second piston 212 moves in the inner cavity of the main valve body 21, the size of the first pressure chamber 213 or the second pressure chamber 214 changes.

The four-way valve 20 further includes a first capillary 61, a second capillary 62, a third capillary 63, and a fourth capillary 64. One end of the first capillary tube 61 is connected to the pilot valve 27, and the other end is connected to the first inserting hole 54 at the side of the first connecting pipe 22 and communicated with the inner cavity of the first connecting pipe 22; one end of the second capillary 62 is connected to the pilot valve 27, and the other end is connected to the main valve body 21 and communicates with the first pressure chamber 213; one end of the third capillary 63 is connected to the pilot valve 27, and the other end is connected to the second insertion hole 55 at the side of the third connecting pipe 24 and is communicated with the inner cavity of the third connecting pipe 24; one end of the fourth capillary 64 is connected to the pilot valve 27, and the other end is connected to the main valve body 21 and communicates with the second pressure chamber 214.

A sliding frame 215 is further arranged in the main valve body 21, two ends of the sliding frame 215 are connected to the first piston 211 and the second piston 212, and the sliding frame 215 can move axially in the inner cavity of the main valve body 21 and simultaneously drive the first piston 211 and the second piston 212 to be linked; the sliding frame 215 is provided with a reversing sliding block 216, the reversing sliding block 216 can move along with the sliding frame 215, a V-shaped or U-shaped communication channel 217 is formed in the reversing sliding block 216, and in the moving process of the reversing sliding block 216, the communication channel 217 can be communicated with inner cavities of two adjacent second connecting pipes 23, third connecting pipes 24 and fourth connecting pipes 25.

When the first piston 211 moves to one end of the inner cavity of the main valve body 21, the first pressure chamber 213 is compressed, and at this time, the carriage 215 drives the reversing slider 216 to a region where the second connecting pipe 23 and the third connecting pipe 24 extend into the main valve body 21, the communication channel 217 communicates the inner cavities of the second connecting pipe 23 and the third connecting pipe 24, and simultaneously blocks the fourth connecting pipe 25 and the third connecting pipe 24, and the first connecting pipe 22 communicates with the fourth connecting pipe 25; when the second piston moves to the other end of the inner cavity of the main valve body 21, the second pressure chamber 214 is compressed, at this time, the carriage 215 drives the reversing slider 216 to the region where the third connecting pipe 24 and the fourth connecting pipe 25 extend into the main valve body 21, the communication channel 217 communicates the inner cavities of the third connecting pipe 24 and the fourth connecting pipe 25, and simultaneously blocks the second connecting pipe 23 and the third connecting pipe 24, and the first connecting pipe 22 and the second connecting pipe 23.

The following is the utility model provides a valve body subassembly 100 heats the process that operating mode and refrigeration operating mode switched in air conditioning equipment:

a part of high-pressure refrigerant from the compressor passes through the check valve 10, enters the main valve body 21 of the four-way valve 20 from the first connecting pipe 22, a part of refrigerant enters the pilot valve 27 from the first capillary tube 61, at this time, the pilot valve 27 is opened under the action of the electromagnetic coil, the pilot valve 27 controls the first capillary tube 61 to be communicated with the second capillary tube 62, a part of refrigerant entering the first capillary tube 61 enters the second pressure chamber 214 through the second capillary tube 62, the second piston 212 is pushed to move under the action of high pressure, the second pressure chamber 214 is enlarged, the second piston 212 drives the first piston 211 to be linked in the same direction and compress the first pressure chamber 213 through the carriage 215 until the first piston 211 abuts against the right end part (the right end part of the main valve body 21 shown in fig. 4) of the main valve body 21, at this time, the reversing slider 216 moves to the region where the second connecting pipe 23 and the third connecting pipe 24 extend into the main valve body 21, the communication channel 217 communicates the inner, the refrigerant entering the inner cavity of the main valve body 21 from the first connecting pipe 22 is discharged out of the four-way valve 20 from the fourth connecting pipe 25 and sequentially flows through the outdoor heat exchanger, the throttling assembly, the indoor heat exchanger and the compressor, so that the refrigeration cycle is realized; then the pilot valve 27 is closed under the action of the electromagnetic coil, the pilot valve 27 controls the first capillary 61 to communicate with the third capillary 63, part of the refrigerant entering the first capillary 61 enters the first pressure chamber 213 through the third capillary 63, the first piston 211 is pushed to move under the action of high pressure, and the first pressure chamber 213 is enlarged, the first piston 211 drives the second piston 212 to move in the same direction through the carriage 215 and compress the second pressure chamber 214 until the second piston 212 abuts against the left end of the main valve body 21 (as shown in fig. 4, the left end of the main valve body 21), at this time, the reversing slider 216 moves to the region where the third connecting pipe 24 and the fourth connecting pipe 25 extend into the main valve body 21, the channel 217 communicates the inner cavities of the third connecting pipe 24 and the fourth connecting pipe 25, the refrigerant entering the inner cavity of the main valve body 21 from the first connecting pipe 22 exits the four-way valve 20 from the second connecting pipe 23 and flows through the indoor heat exchanger, the throttle subassembly, outdoor heat exchanger and compressor to realize heating cycle.

The features of the above-described embodiments may be arbitrarily combined, and for the sake of brevity, all possible combinations of the features in the above-described embodiments are not described, but should be construed as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the features.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims (10)

1. The valve body assembly is characterized by comprising a one-way valve (10), a four-way valve (20) and a switching pipe (30), wherein the one-way valve (10) is connected with the four-way valve (20) through the switching pipe (30), and the switching pipe (30) is an aluminum pipe; the check valve (10) and/or the four-way valve (20) and the adapter tube (30) are fixed in a welding mode.

2. The valve body assembly according to claim 1, wherein one end of the check valve (10) extends into the adapter tube (30) and is fixedly connected with the adapter tube (30); and/or a first connecting pipe (22) of the four-way valve (20) extends into the adapter pipe (30) and is fixedly connected with the adapter pipe (30).

3. Valve body assembly according to claim 1, characterized in that the non-return valve (10) or the adapter tube (30) is provided with a first stop for limiting the depth of the abutment between the non-return valve (10) and the adapter tube (30).

4. A valve body assembly according to claim 3, wherein the first stop portion comprises a first stop lug (51), the first stop lug (51) being located at an outer peripheral wall of the one-way valve (10) or an inner wall of the adapter tube (30).

5. The valve body assembly according to claim 1, wherein the four-way valve (20) and the adapter tube (30) are provided with a second limit portion for limiting the depth of the butt joint between the four-way valve (20) and the adapter tube (30).

6. The valve body assembly according to claim 5, wherein the second position-limiting portion includes a second position-limiting protrusion (52), and the second position-limiting protrusion (52) is located at an outer peripheral wall of the first connection pipe (22) of the four-way valve (20) or an inner wall of the adapter pipe (30).

7. Valve body assembly according to claim 1, wherein the adapter tube (30) is an elbow tube, the adapter tube (30) comprising a first adapter portion (31) and a second adapter portion (32), the first adapter portion (31) being connected to the one-way valve (10) and the second adapter portion (32) being connected to the four-way valve (20); the first transfer part (31) and the second transfer part (32) are in smooth transition.

8. Valve body assembly according to claim 7, further comprising a support element (40), wherein one end of the support element (40) is fixedly connected to the one-way valve (10) and the other end is fixedly connected to the four-way valve (20).

9. Valve body assembly according to claim 7, wherein the non-return valve (10) is arranged in parallel with the main valve body (21) of the four-way valve (20).

10. An air conditioning apparatus, characterized in that the air conditioning apparatus comprises a valve body assembly according to any one of claims 1 to 9.

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