CN2580147Y

CN2580147Y - Non-return valve structure with noise reduction cover

Info

Publication number: CN2580147Y
Application number: CN 02285952
Authority: CN
Inventors: 张龙财; 邱忠本; 唐光德
Original assignee: Rechi Precision Co Ltd
Current assignee: Rechi Precision Co Ltd
Priority date: 2002-11-14
Filing date: 2002-11-14
Publication date: 2003-10-15
Anticipated expiration: 2012-11-14

Abstract

The utility model relates to a non-return valve structure with a noise reduction cover, which is primarily composed of a valve cock and a valve cock cover, wherein, the valve cock cover is provided with a valve cock trepanning hole which is used for sheathing the valve cock, and the cover body is provided with a pressure guide hole which enables a high pressure chamber to be communicated with the valve cock trepanning hole. The abutted surface of the valve cock cover and an isolation seat is provided with a diversion groove for discharging coolants. The valve cock is directly pressed and butted on a venting hole on the isolation seat by the pressure in the high pressure chamber to reach the back stop function of blocking high pressure coolants from returning and entering a lower pressure chamber. When the high pressure coolants run mutually around a movable scroll and a fixed scroll, the high pressure coolants can directly push the valve cock to ascend and can enter the high pressure chamber through the diversion groove.

Description

The check valve structure of tool silencer cover

Technical field

The utility model relates to a kind of check valve structure of tool silencer cover; particularly provide one can effectively reduce the different sound and the valve sheet that form because of the pulse that produces of refrigerant compression institute and when shutting down, can't determine to slide the noise that interdicts high pressure refrigerant adverse current and take place, and stable refrigerant enter the check valve structure of the hyperbaric chamber flow direction at compressor.

Background technique

Be illustrated in figure 1 as the structural representation of general scroll compressor, the basic structure of integrating compressor A includes members such as a moving scrollwork A2, a fixed scroll A1, an isolation seat B and driven unit C; Wherein, the inside of compressor A is that confined space separates into a low pressure chamber R1 and a hyperbaric chamber R2 about being incited somebody to action by isolation seat B, and be respectively equipped with refrigerant inlet A3 and refrigerant exit A4 in the side of low pressure chamber R1 and hyperbaric chamber R2, side at low pressure chamber R1 is provided with a fixed scroll A1 and a moving scrollwork A2 below isolation seat B simultaneously, do revolution in fixed scroll A1 inside and the action that rotates of not rotation to drive moving scrollwork A2 by driven unit C, so as to changing the volume space between fixed scroll A1 and moving scrollwork A2, and reach the refrigerant that enters low pressure chamber R1 is done suction, the work of compression is to change the volume of refrigerant, make the flow through vent B1 of isolation seat B of high pressure refrigerant, flow in the refrigerant pipe by refrigerant exit A4 again, make refrigerant between refrigerant pipe and compressor A, carry out the action of thermodynamic cycle.

Because isolation seat B both sides are respectively high voltage terminal and low voltage terminal, when compressor A shuts down, pressurized gas return adverse current to low voltage side and produce noise, so must one check valve B2 be set at the vent B1 place of isolation seat B, return low voltage side to avoid the quick adverse current of high pressure refrigerant; Yet the general used check valve B2 such as the form of valve sheet are formed, but valve sheet also will cause high pressure refrigerant adverse current if can't slide the blocking path really, and make a noise when shutting down; And for example shown in Figure 2, it is another kind of on the market check valve structure, it establishes a valve rod E by between an isolation seat B and a stopper D, and valve rod E lower edge face directly peaks at the end face of isolation seat B, to avoid the quick adverse current of high pressure refrigerant to return low voltage side, so its moving scrollwork and fixed scroll are when turning round mutually, and refrigerant is compressed to enter among the R2 of hyperbaric chamber and will produces pulse, therefore also therefore and instability is clashed into up and down check valve B2 causes great different sound.

Technology contents

The main purpose of the check valve structure of the utility model tool silencer cover is the structure by bibcock and bibcock lid formation check valve; its bibcock lid has the bibcock trepanning and uses for bibcock and be nested with; and on lid, be provided with the pressure guide hole that the hyperbaric chamber is communicated with the bibcock trepanning; and the guiding gutter that is provided with cooling matchmaker bleed off at the bibcock lid and the faying surface of isolation seat; when moving scrollwork and fixed scroll turn round mutually; can make the direct ejection bibcock of high pressure refrigerant rise; and make the high pressure refrigerant be able to enter in the hyperbaric chamber by guiding gutter; and when shutting down directly bibcock is pressed against the vent place of isolation seat by the pressure effect in hyperbaric chamber, to reach the non-return effect that blocking-up high pressure refrigerant oppositely enters low pressure chamber.

Another purpose of the check valve structure of the utility model tool silencer cover can be formed with the arc lead angle at the vent periphery of isolation seat, makes the end face of itself and bibcock form the guide function that refrigerant is discharged smoothly, impacts the noise that is produced to reduce refrigerant.

The another purpose of the check valve structure of the utility model tool silencer cover be can be via guiding gutter with the average bleed off of refrigerant to stablize the flow direction that refrigerant enters the hyperbaric chamber.

A purpose again of the check valve structure of the utility model tool silencer cover is can cover at bibcock to be formed with gas port, make a large amount of high pressure refrigerants except entering the hyperbaric chamber by guiding gutter, more can enter the hyperbaric chamber, can more effectively reach and discharge the high pressure refrigerant fast by gas port.

The technical solution of the utility model is: a kind of check valve structure of tool silencer cover, this check valve are mainly used in and make refrigerant enter the vent in hyperbaric chamber by low pressure chamber on the isolation seat of compressor, the non-return effect with restriction refrigerant one-way flow, wherein:

This check valve cooperates the main body of isolation seat to be constituted by bibcock with the bibcock lid, wherein, bibcock covers to have uses the bibcock trepanning that is nested with for bibcock, and on lid, be provided with the pressure guide hole that the hyperbaric chamber is communicated with this bibcock trepanning, and be provided with the guiding gutter that the cooling matchmaker releases at the faying surface of bibcock lid and isolation seat;

The vent periphery of this isolation seat is formed with and makes itself and bibcock end face form a guide function that refrigerant is discharged smoothly impacts the noise that is produced with the minimizing refrigerant arc lead angle.

The check valve structure of the utility model tool silencer cover, the effect of its check valve mainly is to make the vent that makes refrigerant be entered the hyperbaric chamber by low pressure chamber on the isolation seat of compressor, non-return effect with restriction refrigerant one-way flow, and then make refrigerant be able to press really be stored in the hyperbaric chamber, make refrigerant be released in the refrigerant pipe with suitable flow again, make refrigerant carry out the action of thermodynamic cycle in refrigerant pipe and compressor chamber from the refrigerant outlet.

Description of drawings

Fig. 1 is the structural representation of general scroll compressor;

Fig. 2 is check valve structure External view commonly used;

Fig. 3 is a check valve structure External view of the present utility model;

Fig. 4 is the structure sectional view between check valve of the present utility model and isolation seat;

Fig. 5 is the plan view of bibcock lid of the present utility model;

Fig. 6 is the structure sectional view between another embodiment's check valve and isolation seat.

[figure number explanation]

The A compressor; The A1 fixed scroll; A2 moving scrollwork;

The B isolation seat; The B1 vent; The B2 check valve;

The C driven unit; The D stopper; The E valve rod;

The R1 low pressure chamber; The R2 hyperbaric chamber; 1 isolation seat;

11 vents; 12 arc lead angles; 13 bibcocks lid block set;

14 gas ports; 2 bibcocks; 21 containing grooves;

3 bibcocks lid; 31 bibcock trepannings; 311 pressure guide holes;

32 guiding gutters; 4 elastic elements.

Specific implementation

Please cooperate Fig. 3 and shown in Figure 4 simultaneously, whole check valve structure of the present utility model mainly is to cooperate the main body of isolation seat 1 to be constituted by a bibcock 2 with bibcock lid 3, wherein, bibcock lid 3 is to have a bibcock trepanning 31 usefulness to be nested with for bibcock 2, and on lid, be provided with a pressure guide hole 311 that hyperbaric chamber R2 is communicated with bibcock trepanning 31, and the guiding gutter 32 that is provided with cooling matchmaker bleed off at the bibcock lid 3 and the faying surface of isolation seat 1, directly bibcock 2 is pushed against vent 11 places with pressure effect in isolation seat 1 by hyperbaric chamber R2, to reach the non-return effect that blocking-up high pressure refrigerant oppositely enters low pressure chamber R1, otherwise, when its moving scrollwork and fixed scroll turn round mutually, can make the direct ejection bibcock 2 of high pressure refrigerant rise, and make the high pressure refrigerant be able to enter among the R2 of hyperbaric chamber by guiding gutter 32; And be formed with arc lead angle 12 at isolation seat 1 vent 11 peripheries, make the end face of itself and bibcock 2 form the guide function that refrigerant is discharged smoothly, to produce pulse to reduce compressed the entering among the R2 of hyperbaric chamber of refrigerant, and make its instability cause up and down the bump different sound that produces, and can be via guiding gutter 32 with the average bleed off of refrigerant to stablize the flow direction that refrigerant enters hyperbaric chamber R2.

Moreover, its isolation seat 1 is provided with one in the turning point on isolation seat 1 surface of vent 11 can be in order to the bibcock lid block set 13 with bibcock lid 3 location, structure with firm whole check valve, certainly it then can directly be located at guiding gutter 32 wall of bibcock lid block set 13, and still can be when bibcock 2 be subjected to the ejection of high pressure refrigerant and rises, its refrigerant can cover the guiding of the arc lead angle 12 on block set 13 walls and enters smoothly among the R2 of hyperbaric chamber via guiding gutter 32 via bibcock, certainly also bibcock can be covered 3 and be provided with gas port 14, as shown in Figure 5, with when guiding gutter 32 can't be loaded a large amount of refrigerant, and can assist so that refrigerant is stablized bleed off among the hyperbaric chamber R2 that arrives by gas port 14; And for example shown in Figure 6, be formed with a containing groove 21 at bibcock 2 upsides, be placed with an elastic element 4 in it, when bibcock 2 is subjected to the ejection of a large amount of high pressure refrigerants and rises, can form the effect of a buffering by elastic element 4, and can reduce bibcock 2 and the noise that bibcock lid 3 bumps are produced, prolonged its working life.

Certainly also can directly fixed scroll directly be used as isolation seat 1, and be formed with vent 11, be formed with bibcock lid block set 13 in vent 11 peripheries in order to bibcock lid 3 is located in the fixed scroll center.

The check valve structure of the utility model tool silencer cover cooperates the main body of isolation seat 1 and the check valve structure that constitutes by a bibcock 2 and bibcock lid 3, can directly bibcock 2 be pressed against vent 11 places of isolation seat 1 by the pressure effect of hyperbaric chamber R2, to reach the non-return effect that the blocking-up refrigerant oppositely enters low pressure chamber R1, and when its moving scrollwork and fixed scroll turn round mutually, can make the direct ejection bibcock 2 of high pressure refrigerant rise, and make the high pressure refrigerant be able to enter among the R2 of hyperbaric chamber by guiding gutter 32, and cooperate the effect of guiding gutter 32 by the arc lead angle of vent 11 peripheries, can effectively reduce because refrigerant impacts the noise that is produced, and stable refrigerant enters the flow direction of hyperbaric chamber R2, provide compressor another preferable feasible check valve structure, so propose the application of utility model patent in accordance with the law.

Claims

1, a kind of check valve structure of tool silencer cover, this check valve are mainly used in and make refrigerant enter the vent in hyperbaric chamber by low pressure chamber on the isolation seat of compressor, and the non-return effect with restriction refrigerant one-way flow is characterized in that,

2, the check valve structure of a kind of tool silencer cover as claimed in claim 1 is characterized in that, described isolation seat is provided with in the turning point on the isolation seat surface of vent can be in order to bibcock lid location, with the bibcock lid block set of firm whole check valve structure.

3, the check valve structure of a kind of tool silencer cover as claimed in claim 2 is characterized in that, described guiding gutter is located at the wall of this bibcock lid block set.

4, the check valve structure of a kind of tool silencer cover as claimed in claim 1 is characterized in that, described bibcock lid is formed with assists the release gas port of the paramount pressure of high pressure refrigerant chamber of guiding gutter.

5, the check valve structure of a kind of tool silencer cover as claimed in claim 1 is characterized in that, described bibcock upside is formed with containing groove, also is placed with the elastic element of buffering usefulness in this containing groove.

6, the check valve structure of a kind of tool silencer cover as claimed in claim 4 is characterized in that, described elastic element is a spring.

7, the check valve structure of a kind of tool silencer cover as claimed in claim 1, it is characterized in that, described isolation seat can be fixed scroll, and is formed with vent in this fixed scroll center, is formed with in the vent periphery in order to the bibcock lid block set with bibcock lid location.