CN2886461Y

CN2886461Y - Two-way throttle valve for heat pump type air conditioner

Info

Publication number: CN2886461Y
Application number: CN 200620103167
Authority: CN
Inventors: 赵敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-04-28
Filing date: 2006-04-28
Publication date: 2007-04-04
Anticipated expiration: 2016-04-28

Abstract

The utility model discloses a two-way choke valve for heat pump air-conditioning comprising a body that consists of a valve body, in which fixed with bisymmetrical valve bases comprising a valve hole and a slideway. A sliding spool provided with two axial small bores is arranged inside the sildeway bringing three arris blocks on the peripheral spool. A boss engaged with an inner surface of the valve base on the arris block. The top end of the spool is provided with a sphere chamfering hob engaged with the corresponding valve hole. The utility model is provided with a simple and rational structure, a simplified system pipe line, a better running dependability, a wide application in air-conditioning systems.

Description

A kind of bidirectional throttling valve that is used for heat pump type air conditioner

Technical field

The utility model relates to a kind of bidirectional throttling valve, refers in particular to a kind of bidirectional throttling valve that is used for heat pump type air conditioner.

Background technology

In the prior art, the structure composition of heat pump air conditioner mainly contains compressor, condensing unit, throttle part and evaporimeter and forms, in air-conditioning system, throttle part is the critical component of decision heat pump performance, as shown in Figure 1, traditional restricting element is made up of main capillary 6, one a secondary capillary 7, check valve 9,

filter

5,8 and each connector, in use, by the unidirectional control action of check valve, the realization air-conditioning system is in refrigeration or heat two different flows in the stream.The throttle part of this structure is formed complexity, volume is big, energy loss is serious; More because of its pad again, be easy to generate serious quality accidents such as leakage during use.

Utility model patent ZL99245856.0 discloses a kind of bidirectional throttle device, mainly contain the device of a tubulose, be respectively arranged with two valve seats of oppositely settling in the body, the spool that respectively be mounted with movably in the valve seat, the centre has axial pore, the axial pore of two spools is small one and large one, be respectively applied for refrigeration and heat process, in the tubulose body of two spool outer ends, respectively be provided with a fluid filter screen in addition.This technical scheme poor sealing, performance is not good.

Summary of the invention

The utility model provides a kind of simple in structure, system pipeline to simplify, can improve the bidirectional throttling valve that is used for heat pump type air conditioner of air-conditioning system quality.

A kind of bidirectional throttling valve that is used for heat pump type air conditioner, comprise body, body comprises valve body, sealing and fixing has the valve seat of two symmetries in the valve body, and valve seat comprises valve opening and slideway, is provided with slidably spool in the slideway, have axial pore on the spool, described spool periphery has three rib pieces, has the boss that cooperates with valve base inner wall on the rib piece, and the spool head has the sphere chamfering that cooperates with corresponding valve opening end.

The valve opening end and the valve body of described valve seat are fixed, and valve opening end outer wall is provided with some grooves, and the corresponding bearing of valve body is provided with some pressures and is embedded in the interior rib sheet of groove.

Be provided with back-up ring between the slideway of described valve seat, all be fixed with a filter screen on the valve opening port.

The utility model is integrated in one the filter of conventional throttle assembly, main capillary, secondary capillary, check valve, tube connector, has simplified system pipeline widely, has overcome the deficiency that traditional capillary module exists.

The utility model is fixed in valve seat one end with filter screen, and spool places in the valve seat, and the valve seat that has filter screen and spool adopts groove and rib sheet to press build-in in valve body, is provided with back-up ring between two valve seat slideways, forms two independently reverse valve pockets; Refrigeration or heat in the process is realized heating in the unit or pressure drop requirement when freezing by two mobilizable spools.Spool design is the triangular shape, and the deadweight that has effectively alleviated spool is in sliding process, wearing and tearing have been reduced with valve base inner wall, in the moment of spool closure, effectively reduced impulsive force, thereby increased service life the potted line of spool head sphere chamfering and slide ramp formation; Two valve base chambers are provided with back-up ring, are used to limit the shift position of spool, and the filter screen at two ends plays the effect of filter, effectively impurity screening; Be carved with the coding with the spool corresponding specification on the valve body, be convenient to produce in enormous quantities; All parts adopt metal material, have better service life.

Description of drawings

Fig. 1 is the structural representation of traditional capillary module;

Fig. 2 is a cross-sectional view of the present utility model;

Fig. 3 is the cross-sectional view of A part among Fig. 2.

The specific embodiment

Shown in Fig. 2,3, a kind of bidirectional throttling valve that is used for heat pump type air conditioner comprises body, and body comprises valve body 1,1 liang of end interface of valve body can welded and installed at indoor apparatus of air conditioner or off-premises station Anywhere.

Sealing and fixing has the valve seat 2,3 of two symmetries in the valve body 1, valve seat 2,3 comprises valve opening 21,31 and slideway 22,32, be provided with slidably spool 23,33 in the slideway 22,32, have axial pore 24,34 in the spool 23,33, the valve opening end and the valve body of valve seat 2,3 are fixed, valve opening 21,31 end outer walls are provided with some grooves 28,38, valve body 1 corresponding bearing is provided with some pressures and is embedded in rib sheet 29,39 in the groove 28,38,22,32 in the slideway of two valve seats 2,3 is provided with back-up ring 4, all is fixed with a filter screen 25,35 on valve opening 21,31 ports.

Have axial pore 24,34 on the spool 23,33, have three rib pieces on the periphery, have on the rib piece with valve seat 2,3 inwalls and cooperate boss, spool 23,33 heads are provided with the sphere chamfering 27,37 that cooperates with corresponding valve opening 21,31 ends.

Valve body 1 two ends have the coding 26,36 with spool 23,33 corresponding specification.

When cold-producing medium enters from the choke valve left end, behind filter screen 35, the cold-producing medium of cleaning enters in the valve body 1, spool 33 is pushed away to the right, because center fixed has back-up ring 4, spool 33 is limited in the fixed journey system, spool 33 is in open mode, and this moment is because a pressure left side is high right low, right-hand member spool 23 is pressed towards right-hand member, make spool 23 be in closed throttle, because valve body 1 is airtight with valve seat 2, sealing between spool 23 and the valve seat 2, pass through thereby force in the axial pore 24 of cold-producing medium in the spool 23, the axial pore 24 of spool 23 accurately designs according to flow and processes, and feasible cold-producing medium by whole bidirectional throttling valve reaches specified flow, thereby realizes specified efficiency.

When cold-producing medium flows into from the choke valve right-hand member, behind filter screen 25, the cold-producing medium of cleaning enters in the valve body 1, spool 23 is pushed away left, because center fixed has back-up ring 4, spool 23 is limited in the fixed journey system, spool 23 is in open mode, and this moment is because the right high left side of pressure is low, left end spool 33 is pressed towards left end, make spool 33 be in closed throttle, because valve body 1 is airtight with valve seat 3, sealing between spool 32 and the valve seat 3, pass through thereby force in the axial pore 34 of cold-producing medium in the spool 3, the axial pore 34 of spool 33 accurately designs according to flow and processes, and feasible cold-producing medium by whole bidirectional throttling valve reaches specified flow, thereby realizes specified efficiency.

Claims

1. bidirectional throttling valve that is used for heat pump type air conditioner, comprise body, body comprises valve body (1), the interior sealing and fixing of valve body (1) has the valve seat (2) of two symmetries, (3), valve seat (2), (3) comprise valve opening (21), (31) and slideway (22), (32), slideway (22), (32) be provided with slidably spool (23) in, (33), spool (23), (33) have axial pore (24) on, (34), it is characterized in that: described spool (23), (33) periphery has three rib pieces, have the boss that cooperates with valve base inner wall on the rib piece, spool (23), (33) head has and corresponding valve opening (21), (31) the sphere chamfering (27) of end cooperation, (37).

2. as right 1 described bidirectional throttling valve, it is characterized in that: the valve opening (21) of described valve seat (2), (3), (31) end are fixed with valve body (1), valve opening (21), (31) end outer wall are provided with some grooves (28), (38), and the corresponding bearing of valve body (1) is provided with some pressures and is embedded in groove (28), (38) interior rib sheet (29), (39).

3. as right 1 described bidirectional throttling valve, it is characterized in that: be provided with back-up ring (4) between the slideway (22) of described valve seat (2), (3), (32), all be fixed with a filter screen (25), (35) on valve opening (21), (31) port.