JPS6039051Y2 - Strainer muffler - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a muffler that is equipped with a mesh that prevents dust, etc. in the refrigerant from entering the expansion valve, capillary, etc., and reduces pressure pulsations in the refrigerant gas.

Conventionally, a strainer muffler that combines both functions of a strainer muffler has been known, but it has the following drawbacks.

FIGS. 1a and 1b are a side sectional view and an exploded view of its parts, showing an example of a conventional strainer muffler.

As shown, 1 is a muffler body for reducing pressure pulsations of refrigerant gas, and a mesh 2 is installed inside the muffler body.

This mesh 2 is intended to prevent dust, etc. in the refrigerant from entering the expansion valve, capillary, etc.
and the second ring 4, is inserted into the muffler body 1, and is fixed by caulking a part of the muffler body 1, and functions as a strainer.

Since the muffler main body 1 and the strainer are functionally integrated into one in this way, costs can be reduced.

However, in the conventional strainer muffler as described above, stress exceeding the durability limit is generated in the mesh 2, which may cause fatigue failure and breakage.

In other words, the function of the muffler body 1 is to expand and contract the cavity by making the pipe diameter at the center larger than the pipe diameter at the inlet and outlet, thereby reducing the pressure pulsation of the refrigerant gas at the inlet and allowing the refrigerant to flow from the outlet without pulsating pressure. This is because the pressure pulsations in the central part of the muffler body 1 are not reduced, so the mesh 2 inserted into the muffler body 1 is greatly deformed back and forth due to the pressure pulsations. be.

The present invention has been devised in view of the above-mentioned drawbacks and to effectively eliminate them.

The purpose of this invention is to create two cavities inside the muffler body using a partition plate, reduce the pressure pulsation of the refrigerant gas in one cavity, and then introduce the refrigerant gas into the other cavity equipped with a mesh. The purpose is to provide a strainer muffler with a simple structure that can prevent the occurrence of mesh damage.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIGS. 2a and 2b are side sectional views and exploded views of parts thereof, showing one embodiment of the strainer muffler according to the present invention, and FIG.
, b is a side sectional view and an exploded view of its parts showing another embodiment of the strainer muffler according to the present invention, and FIGS.
5 is a side sectional view and an exploded view of its parts showing another embodiment of the strainer muffler according to the present invention, and FIGS. 5a and 5b are
, c are a side sectional view, a partial perspective view, and an exploded view of still another embodiment of the strainer muffler according to the present invention.

As shown in FIGS. 2a and 2b, 5 is a muffler body, and the center portion of the muffler body 5 is formed to have a bulge larger than the pipe diameters of the inlet 6 and the outlet lower.

A mesh 8 is inserted into the center of the muffler body 5 while being held between a substantially conical ring partition plate 9 and a ring 10, and a part of the muffler body 5 is caulked to fix one ring partition plate 9. As a result, it is installed inside the muffler main body 5.

A ring partition plate 9 is arranged between the mesh 8 and the entrance 6 of the muffler body.

A hole is provided in the center of the ring partition plate 9, and this hole corresponds to the inlet 6 of the muffler body 1.

Furthermore, since the ring partition plate 9 is formed into a substantially conical shape and covers the mesh 8, the central part of the muffler body 5 is divided into two, creating a cavity 5a on the inlet 6 side and a cavity 5b on the lower outlet side. The mesh 8 is located in the cavity 5b on the lower side.

Therefore, the refrigerant gas passes through one cavity 5a and then enters the other cavity 5b, and comes into contact with the mesh 8 for the first time.

Next, the operation of the present invention will be described.

Refrigerant gas with pressure pulsations is introduced into the muffler 5 body from the inlet 6.

The refrigerant gas entering from the inlet 6 flows into the cavity 5a without directly hitting the ring partition plate 9, and then passes through the approximately conical ring partition plate 9 and enters the next cavity 5b, but once it expands in the cavity 5a, the ring Because it is reduced by the partition plate 9,
The pressure pulsations will be reduced.

As a result, the pressure pulsation of the refrigerant gas that has flowed into the next cavity 5b is small, so even if it hits the mesh 8, the deforming force is small, so there is no risk that the mesh 8 will break.

In addition, the mesh 8 not only prevents the movement of dust in the refrigerant and prevents it from entering the expansion valve, capillary, etc., but also the two cavities 2av2b in the muffler body 5.
Since this is provided, the pressure pulsation of the refrigerant gas is reduced in two stages, which also leads to an improvement in the reduction effect.

Note that the portion formed by the outer periphery of the ring partition plate 9 and the inner wall of the muffler body 1 can prevent the movement of dirt, etc. in the refrigerant, and it is possible to remove some dirt, etc. before reaching the mesh 8. .

As a result, it is possible to reduce the factors such as dust getting stuck in the mesh 8 and causing resistance to the flow of the refrigerant.

Further, in the above embodiment, as shown in FIG. 2a, a case was explained in which a substantially conical ring partition plate 9 was attached to the central part of the muffler body 5 near the lower outlet, but the present invention is shown in FIG. 3a. As shown in FIG.

In this case, as shown in FIG. 3, the components are the same as those in the previous embodiment, but the refrigerant gas inlet and outlet are completely reversed, so the assembly direction of the ring partition plate 11 and ring 12 is accordingly changed. They differ in that they are opposites.

Furthermore, in each of the above embodiments, one ring partition plate 9.11
Although the case has been described in which the mesh 8 is formed into a substantially conical shape, the present invention, as shown in FIGS. Three cavities 5a, 5b, and 5c may be made within 5.

In this case, since the mesh 8 is held in the center cavity 5b, the muffler main body 5 can be used without any problem as either the entrance/exit 6.7.

Furthermore, in each of the above embodiments, the substantially conical ring partition plate 9,
Two or three cavities 5a using 11, 13, 14
, 5b, and 5c have been described, but the present invention may connect two separately formed cavities 5a, 5b as shown in FIGS. 5a, b, and c.

Specifically, the muffler body 5 is formed as shown in the same figure, and two of the muffler bodies 5 are used. The mesh 8, ring 15, and ring 16 are inserted into one of the muffler bodies 5, and the two muffler bodies 5 are crimped. The muffler body 5 is brazed and fixed.

As a result, two cavities 5a and 5b are formed, so even if refrigerant gas is introduced from the inlet 6, the pressure pulsation is reduced in the cavity 5a on the inlet 6 side, so only a slight pressure pulsation acts on the mesh 8. Therefore, the mesh 8 will not be torn.

Note that 17 is a muffler hole. As is clear from the above description, according to the present invention, by providing at least two cavities in the muffler body, at least one of the cavities is
After reducing the pressure pulsation of the refrigerant gas, the refrigerant gas will flow into the other cavity equipped with the mesh.
Breakage of the mesh can be prevented and reliability is improved.

Moreover, since the structure is simple, it can be manufactured easily and at low cost, and exhibits excellent effects such as being useful.

Further, the portion formed by the outer periphery of the partition plate and the inner wall of the main body can prevent the movement of dust, etc. in the refrigerant, and it is possible to remove dust, etc. to some extent at a stage before reaching the mesh.

As a result, it is possible to reduce the possibility of the mesh becoming clogged with dirt and the like, which may cause resistance to the flow of the refrigerant.

[Brief explanation of drawings]

FIGS. 1a and 1b are a side sectional view and an exploded view of its parts, showing an example of a conventional strainer muffler, and FIG. 2a is a side sectional view showing an example of a conventional strainer muffler. 3b is a side sectional view showing one embodiment of the strainer muffler according to the present invention and an exploded view of its parts; FIGS. Figures 4a and 4b are a side sectional view and an exploded view of its parts showing another embodiment of the present invention, and Figure 5
Figures a, b, and c are a side sectional view, a partial perspective view, and an exploded view of still another embodiment of the strainer muffler according to the present invention. In the figure, 5 is the muffler body, 5a, 5b, 5c are cavities, 6 is the inlet, 7 is the outlet, 8 is the mesh, 9, 11, 13, 14
is a substantially conical ring partition plate.

Claims (1)

[Scope of utility model registration request] A main body having a bulge larger than the pipe diameters of the inlet and outlet, a mesh provided across the cross section of the bulge of the main body to prevent the movement of dust, etc., and between the mesh and the inlet of the main body. A strainer muffler comprising: a partition plate having a hole at a position corresponding to the inlet, and a partition plate provided so as to cover the mesh.