CN1281537A

CN1281537A - Refrigerating agent compressor with improved pressure chamber

Info

Publication number: CN1281537A
Application number: CN 98812000
Authority: CN
Inventors: R·朗; J·诺伊保尔
Original assignee: Verdichter Oe GmbH
Current assignee: Secop Austria GmbH
Priority date: 1997-12-11
Filing date: 1998-12-10
Publication date: 2001-01-24
Anticipated expiration: 2018-12-10
Also published as: CN1097164C

Abstract

The invention relates to an electric refrigerating agent compressor, in particular used for a domestic refrigerating machine and a refrigerator, which comprises an outer casing, an inner casing, a pressure chamber integrated with the inner casing and a cover for closing an opening of the pressure chamber, wherein, the cover and the pressure chamber are provided with a ring flat edge (15) disposed in a pressure chamber opening range and a corresonding ring flat edge (6) extending along a closing circumference of the cover. The two ring flat edges connects with each other by the fact that they stably connects together for ever. One ring flat edge has a protrusion protruding towards the corresponding opposite ring flat edge. A radial perpendicular section in substantially triangle with one angle outwardly, which angle is between 70-90 DEG. The bottom (E) of the pressure chamber is flat.

Description

Has the compressor for cooling fluid that improves the pressure chamber

The present invention relates to a kind of special structure shape of sealing the pressure chamber of airtight compressor for cooling fluid, above-mentioned compressor especially is used in family expenses refrigerator and/or the refrigerating machine.

Knownly to the pressure chamber be set, why be called the pressure chamber this compressor for cooling fluid, be because just by the freezing mixture of compressor piston compression before the pressure piping of its input coolant circuit in the feed pressure chamber.

The main reason that adopts this pressure chamber is that they play a part baffler basically.For structural reason, this baffler or pressure chamber are formed with one or several suitable groove that processes on the cylinder body shell of compressor.Pressure chamber's one side of this noise reduction is opened wide, and this perforate of pressure chamber is closed by an independent cap seal fixing in the compressor installation process.

The general installation method that is used for this lid according to prior art, described lid is holed in the middle, one screw or a bolt B are inserted among the A of this hole like this, screw or bolt are screwed among the respective threaded C that cuts on the convex shoulder D of suitable setting, above-mentioned convex shoulder is in position from the bottom E projection of described pressure chamber 2, shown in Fig. 1 signal.

Yet, several shortcomings are arranged if this technical solution also will meet the requirements of purpose effectively.At first must use two additional parts on the next door of described lid, the bolt B of promptly having mentioned and be inserted in described lid and pressure chamber's perforate between Sealing F, as shown in Figure 1.The use of this add-on parts has improved the processing charges of Master Cost naturally.

Second shortcoming is more relevant with function, because exist described convex shoulder D and screw obviously to reduce the volume of pressure chamber in the pressure chamber, thereby has reduced performance muffler.

Therefore, task of the present invention is to propose a kind of compressor for cooling fluid, this compressor will improve performance muffler and the processing cost that generally reduces combines, and reasonable price under the situation of common material and processing method in adopting prior art is installed simple simultaneously.In accompanying Claim, provided the characteristic with feature of the present invention exactly.

According to the present invention, above-mentioned task is to be finished by the following technical solution that further specifies with reference to the accompanying drawings as non-limitative example.Wherein:

Fig. 1 represents the constructed profile map according to the pressure chamber of the compressor for cooling fluid of prior art,

Fig. 2 represents the constructed profile map according to the pressure chamber of compressor for cooling fluid of the present invention,

The enlarged view of Fig. 3 presentation graphs 2 details.

The present invention based on design be described further below. Can determine with reference to figure 2, Perforate can be processing in the inner housing 1 of unshowned compressor by the balancing gate pit 2 of lid 3 sealings Become. Drowning is useful on to be installed the perforate 12 be used to facing to the balancing gate pit and is sealed shut lid The hole that mechanism uses. Cover the flat outward flange 6 that has an annular in appropriate section.

The perforate 12 of balancing gate pit itself has a corresponding annular flat outward flange, wherein, and phase The size and dimension of answering is chosen to, and lid can be placed in the perforate like this, i.e. the flat outside of annular Edge can unremovably be connected with each other by the variation of material.

For final fixing this connection, a kind of known mechanism of lower surface 13 usefulness of the ring edge 6 of lid itself is for example by ring edge 5 sealings of capacitor discharge welded seal ground facing to the pressure chamber's perforate that is positioned at the below, the result of acquisition requirement thus.

Be understood that, eliminated the necessity that convex shoulder D is set in the bottom of pressure chamber for the pin that installs and fixes the bolt that lid uses by adopting solution of the present invention, improve the workability of pressure chamber thus and enlarged volume, thereby guaranteed better performance muffler.

Have to be noted that also this solution allows to avoid using Sealing simultaneously, because, hermetically enclosed when this connection between the lid and the perforate of pressure chamber has guaranteed at high pressure automatically, and this high pressure just can be present in the pressure chamber.

Help effectively to make described annular flat outer peripheral interconnect to become be easy to a favourable improvement of the present invention and be, on the internal surface at a described edge, be processed with a projection 8, this projection is preferably extended and with respect to the edge on opposite protruding, is promptly pointed to downwards as shown in Figure 3 along the internal surface 13 at the edge of as shown in Figure 3 lid.

The purpose of this projection is to form the line contact of determining, this line contact is essential for welding without a doubt, because being welded to connect of known two flat surfaces can bring several problems that caused by heat leakage and directed difficulty.

Having the cross section that is generally triangular if follow this projection of the annular shape at each edge, is that reasonably wherein, lower limb angle a must be between 70 °～90 ° for the concentrated and connectivity of improving welding heat then.

In addition, must emphasize that in order to connect described edge best, this projection must have the height between 0.2～1.2mm.

Should be appreciated that foregoing description and explanation just can have many modification and improvement as explaining non-limitative example of the present invention, do not exceed protection scope of the present invention.

Claims

1. be particularly useful for the electronic compressor for cooling fluid of family expenses refrigerator and refrigerating machine, has a shell, one is included in the inner casing (1) in the described shell, one with described inner casing all-in-one-piece pressure chamber (2) and one can confining pressure chamber (2) the lid of perforate, wherein, this lid and pressure chamber are equipped with the mechanism that lid can be fixed on its closing position, it is characterized by, described closing means comprises the annular flat edge (5) and the corresponding annular flat edge (6) of extending along the closed perimeter of described lid that are arranged on pressure chamber's perforate scope, wherein, this two annular flat edge (5,6) can connect so mutually, promptly they can stably with for good and all link to each other along its public annular contact line.

2. by the electronic compressor for cooling fluid of claim 1, it is characterized in that described public annular contact line connects by continuous welding.

3. by the electronic compressor for cooling fluid of claim 1 or 2, it is characterized by, do not place Sealing between described annular flat edge (5,6), therefore, the edge is directly contact mutually.

4. by the electronic compressor for cooling fluid of claim 3, it is characterized by, the bottom (E) of described pressure chamber (2) is flat.

5. press the electronic compressor for cooling fluid of aforementioned arbitrary claim, it is characterized by, an annular flat edge, preferably be provided with a projection (8) along the edge (6) that the closed perimeter of described lid is extended circlewise, this projection is outstanding facing to the respective edges of extending along the perforate of described pressure chamber circlewise.

6. by the electronic compressor for cooling fluid of claim 5, it is characterized in that this projection has one and is roughly leg-of-mutton radially sectional elevation, an one angle (8) outwardly, the angle at this angle (a) is between 70 °-90 °.

7. by the electronic compressor for cooling fluid of claim 6, it is characterized by, it is between 0.2～1.2mm that the height of described projection (h) rises from separately annular flat edge (5,6).