CN215113355U

CN215113355U - Throttle valve assembly of type of making an uproar falls

Info

Publication number: CN215113355U
Application number: CN202120129565.5U
Authority: CN
Inventors: 刘护彦; 赵敏
Original assignee: Zhejiang Huayi Machinery Co ltd
Current assignee: Zhejiang Huayi Machinery Co ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-12-10
Anticipated expiration: 2031-01-18

Abstract

The utility model relates to a refrigeration spare part technical field, specifically speaking relate to a throttle valve assembly of type of making an uproar falls. For the noise of the refrigerant, some noise reduction type throttle valves appear in the market, and although the throttle valves play a certain noise reduction role, the requirements of customers on the lean products are still difficult to meet. A noise reduction type throttle valve assembly comprises filters at two ends, wherein one end of the filter at one end is connected with a connecting pipe, the other end of the filter at one end is connected with a first capillary pipe, and the other end of the first capillary pipe is connected with a throttle valve core; the throttle valve core comprises a first welding hole, a second welding hole and a middle elongated hole, and two ends of the outer side of the throttle valve core are provided with stages; the inner diameter of the first capillary is smaller than that of the adapter tube, and the diameter of the elongated hole is smaller than that of the first capillary. Because of the change of the inner diameter, the noise is reduced by throttling for many times, the step section is arranged on the throttling valve core, the welding material is prevented from flowing into the bottom of the welding hole to block the capillary tube, the welding condition when the capillary tube is welded with the throttling valve core is improved, and the probability of welding and blocking the capillary tube is reduced.

Description

Throttle valve assembly of type of making an uproar falls

Technical Field

The utility model relates to a refrigeration spare part technical field, more specifically say and relate to a throttle valve assembly of type of making an uproar falls.

Background

The throttling device is one of four major parts (a compressor, a condenser, a throttling component and an evaporator) of the air conditioner, and plays an important role in the normal operation of the air conditioner. At present, more parts have throttling function, such as a single capillary tube, a capillary tube and a one-way valve, an electronic expansion valve, a thermal expansion valve and the like. The tubular throttle valve is widely accepted by the market due to the characteristics of simple structure, small installation space, high throttling sensitivity, low failure rate, difficulty in ice blockage and filth blockage and the like. However, in any throttle device, there is a lot of refrigerant noise caused by sudden pressure change when the refrigerant undergoes gas-liquid two-phase change. Some noise reduction type throttle valves are also available in the market for refrigerant noise, and although the throttle valves have a certain noise reduction effect, the requirements of customers and consumers on the lean and refinement of products are still difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a throttle valve assembly of the type of making an uproar falls through many times pressure drop to the not enough of prior art.

A noise reduction type throttle valve assembly comprises filters at two ends, wherein one end of the filter at one end is connected with a connecting pipe, the other end of the filter at one end is connected with a first capillary pipe, and the other end of the first capillary pipe is connected with a throttle valve core; the throttle valve core comprises a first welding hole, a second welding hole and a middle elongated hole, and two ends of the outer side of the throttle valve core are provided with stages; the inner diameter of the first capillary is smaller than that of the connecting pipe, and the diameter of the elongated hole is smaller than that of the first capillary. Because of the change of the inner diameter, the noise is reduced by throttling for many times, the stage of setting the throttling valve core can be heated quickly during welding to finish welding, so that welding materials are prevented from flowing into the bottom of a welding hole to block the capillary tube, the welding condition when the capillary tube is welded with the throttling valve core is improved, and the probability of welding and blocking the capillary tube is reduced. The filter is arranged to prevent impurities in the system from entering the capillary tube and the valve core, and smooth flowing of the refrigerant is guaranteed.

As a further improvement and supplement to the above solution, the present invention further comprises the following additional technical features:

the throttle valve assembly also comprises a second capillary tube connected to the other end of the throttle valve core, and throttling is further performed.

The filter include main part and filter screen subassembly, establish first throat and second throat in the main part, the location is convenient.

The diameter of the elongated hole is 0.38-3.3mm, and the application range is wide.

The throttle valve core is made of brass, the connecting pipe is made of red copper, and the connecting pipe is made of red copper, so that the throttle valve core is convenient for customers to connect.

The first bulge is arranged on the outer side of the first capillary tube, and the second bulge is arranged on the second capillary tube, so that the positioning is convenient.

Use the utility model discloses following beneficial effect can be reached: the utility model has the advantages of simple and reasonable structure, convenient to use divides whole pressure drop value delta P that the system required to accomplish the cubic, and first capillary throttle is once promptly, realizes pressure drop delta P1, and throttle valve core throttle once more, realizes delta P2, and when the second capillary was passed through at last, throttle once more, realization delta P3. Namely Δ P1 +/Δ P2 +/Δ P3 ═ Δ P. The pressure drop changes slowly over the entire throttling process, rather than as rapidly as the pressure changes of a conventional throttling element. Greatly reduces the noise, improves the performance and meets the use requirements of customers.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the throttle valve core 4 of the present invention.

Fig. 3 is a partial enlarged view of a portion a shown in fig. 1 of the present invention.

Detailed Description

The following detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1-3, the present invention relates to a noise reduction type throttle valve assembly.

The noise reduction type throttle valve assembly comprises filters 2 at two ends, wherein one end of the filter 2 at one end is connected with a connecting pipe 1, the other end of the filter 2 is connected with a first capillary tube 3, the other end of the first capillary tube 3 is connected with a throttle valve core 4, the other end of the throttle valve core 4 is connected with a second capillary tube 5, and the other end of the second capillary tube 5 is connected with the filter 2. SaidThe throttle valve core 4 comprises a first welding hole 41, a second welding hole 43 and a middle elongated hole 42, the two ends of the outer side are provided with a step section 44, and the diameter of the outer circle of the step section 44 is slightly smaller than that of the outer circle of the middle section; the first welding hole 41 is connected with the first capillary 3 in a brazing mode, the second welding hole 43 is connected with the second capillary 5 in a brazing mode, the diameters of the first capillary 3 and the second capillary 5 can be the same or different, and the first welding hole and the second welding hole are arranged as required. The inner diameter of the first capillary 3 is smaller than that of the adapter tube 1, and the diameter of the elongated hole 42 is smaller than that of the first capillary 3. The filter 2 is provided with an inner hole with the diameter of

And the outer diameter of the connecting pipe 1

Matched with the outer diameter of the connecting pipe 1

The production is carried out according to the requirements of customers.

In this embodiment, the adapter tube 1+ the filter 2+ the first capillary tube 3+ the throttle valve cartridge 4+ the second capillary tube 5+ the filter 2 is adopted, so as to realize three-stage throttling. However, in practical applications, according to the design of the engineer, the two-stage throttling using a single capillary tube (the first capillary tube 3 or the second capillary tube 5) + the throttling valve core 4, or the one-stage throttling using a single throttling valve core 4, and the combined application of other above-mentioned components are not excluded.

Further, filter 2 include main part 21 and filter screen subassembly 22, main part 21 adopts red copper material, establishes first throat 211 and second throat 212 on the main part 21 both ends, the centre sets up filter screen subassembly 22, the filter screen is the stainless steel filter screen among the filter screen subassembly 22, the filter screen is 60 ~ 100 mesh structures, plays the filter effect. The first throat 211 positions the screen assembly 22 and the second throat 212 positions the nipple 1.

Further, the diameter of the elongated hole 42 is between 0.38 and 3.3 mm.

Furthermore, the throttle valve core 4 is made of brass, and the connecting pipe 1 is made of red copper.

Furthermore, the first protrusion 31 is disposed on the outer side of the first capillary 3, the second protrusion 51 is disposed on the second capillary 5, and the first protrusion 31 and the second protrusion 51 are of an arc structure protruding outward and abut against the filter 2.

When the noise reduction type throttle valve assembly is used, when a refrigerant flows in from the left end, the refrigerant firstly passes through the filter 2 to filter impurities and the like, meanwhile, meshes of a filter screen in the filter 2 scatter the refrigerant, the refrigerant flows through the first capillary tube 3 to perform primary throttling, and at the moment, the pressure of the refrigerant is reduced, and the flow rate is increased; then passes through the throttling valve core 4, because the valve core hole is smaller than the inner hole of the first capillary tube 2, secondary throttling is carried out (the valve core throttling 4 is main throttling), the pressure of the refrigerant is reduced again, and the flow rate is increased again; finally, the inner diameter of the second capillary tube 5 is changed, three times of throttling is carried out, and finally, a refrigerant flows into the evaporator through the filter 2 to exchange heat.

Similarly, the same procedure is performed when the refrigerant flows in from the right end.

Let us assume that the pressure drop value of the refrigerant flowing through the throttling component is delta P, the conventional throttling component completes the pressure drop reduction in one step, and the above structure completes the whole pressure drop value three times, i.e. the first capillary 3 throttles once to realize pressure drop delta P1, the throttle valve core 4 throttles once again to realize delta P2, and finally when passing through the second capillary 5, the throttle once again to realize delta P3. Namely Δ P1 +/Δ P2 +/Δ P3 ═ Δ P. During the whole throttling process, the change of the pressure drop is slow, but the change of the pressure of the ordinary throttling part is not rapid, so the noise reduction effect is greatly improved.

The above is the preferred embodiment of the present invention, and the protection scope of the present invention is not limited, and the deformation and improvement made by the design idea of the present invention for those skilled in the art should be considered as the protection scope of the present invention.

Claims

1. A throttle valve assembly of the type that makes an uproar falls, includes filter (2) at both ends, its characterized in that: one end of the filter (2) at one end is connected with the connecting pipe (1), the other end of the filter is connected with the first capillary (3), and the other end of the first capillary (3) is connected with the throttle valve core (4); the throttle valve core (4) comprises a first welding hole (41), a second welding hole (43) and a middle elongated hole (42), and two ends of the outer side are provided with a stage (44); the inner diameter of the first capillary tube (3) is smaller than that of the adapter tube (1), and the diameter of the elongated hole (42) is smaller than that of the first capillary tube (3).

2. A noise reducing throttle valve assembly as set forth in claim 1, wherein: the throttle valve assembly also comprises a second capillary tube (5) connected to the other end of the throttle valve core (4).

3. A noise reducing throttle valve assembly as set forth in claim 1 or 2, wherein: the filter (2) comprises a main body (21) and a filter screen assembly (22), wherein a first necking opening (211) and a second necking opening (212) are formed in the main body (21).

4. A noise reducing throttle valve assembly as set forth in claim 3 wherein: the diameter of the elongated hole (42) is 0.38-3.3 mm.

5. A noise reducing throttle valve assembly as set forth in claim 1, wherein: the throttle valve core (4) is made of brass, and the connecting pipe (1) is made of red copper.

6. A noise reducing throttle valve assembly as set forth in claim 2 wherein: a first bulge (31) is arranged on the outer side of the first capillary tube (3), and a second bulge (51) is arranged on the second capillary tube (5).