KR100747326B1 - Corrosion prevention cover for air conditioner expansion valve using elastic member - Google Patents

Abstract

The present invention relates to a heat resistant cover, and more particularly, to a heat resistant cover that can be fastened to the expansion valve by a simple operation without separate parts and assembly process.

The anti-thermal cover of the present invention is a anti-thermal cover that surrounds the air-conditioning expansion valve connected to the refrigerant pipe on one side, the inner side of the cover is formed with a refrigerant pipe holder for fixing the refrigerant pipe and the inside of the other side The side support portion for supporting the other side of the expansion valve to prevent the left and right flow of the expansion valve is formed, the upper side or the inner side of the cover is formed with a guide portion for supporting the upper or lower surface of the expansion valve when the expansion valve is fastened. An elastic member for elastically supporting the lower surface or the upper surface of the expansion valve downward or upward is formed on the inner surface of the lower surface or the upper surface.

Description

Expansion valve for corrosion prevention of air conditioner expansion valve using elastic member {EXPANSION VALVE COVER BY USING ELASTIC PARTS FOR PREVENTING CORROSION AND HEAT DAMAGE}

1 is a perspective view showing a conventional expansion valve;

Figure 2a is a front perspective view of a conventional thermal protection cover;

Figure 2b is a rear view of a conventional thermal protection cover:

3 is a perspective view illustrating a state in which the thermal damage prevention cover of FIG. 2 is fitted to the expansion valve of FIG. 1;

4 is a perspective view showing an expansion valve in one embodiment according to the present invention;

Figure 5a is a perspective view of the rear of the thermal protection cover as an embodiment according to the present invention;

FIG. 5B is a side view of the thermal protection cover of FIG. 5A mounted to the expansion valve; FIG.

Figure 6a is a rear perspective view of the expansion valve mounted on the thermal protection cover of Figure 5a; And,

FIG. 6B is a front perspective view of FIG. 6A.

** Description of the symbols for the main parts of the drawings **

1, 6: Expansion valve 2, 7: Refrigerant pipe

3, 8: Heat protection cover 31: Refrigerant pipe holder

32: side support 33: front support

34: diaphragm guide portion 35: elastic beam

36: engaging jaw 81: bolt hole

82: spacer 9: nut tightening seat

The present invention forms a refrigerant pipe holder on one side of the cover, and a side support portion on the other side, and by forming a guide portion and an elastic beam on the upper and lower sides, expansion of the air conditioner to elastically fix the expansion valve without separate parts and assembly process A thermal protection cover of the valve.

In the air conditioning system, the expansion valve that regulates the refrigerant flow rate is operated by the refrigerant temperature and pressure flowing therein and the force of the built-in spring, which may malfunction due to the influence of the temperature around the engine room and the high temperature of the exhaust pipe. . In recent years, in the engine exhaust structure, many reversing engines in which exhaust manifolds are located at the rear of the engine have been installed, and a thermal damage prevention cover is applied to the expansion valve to prevent air conditioner malfunction and thermal damage.

1 is a perspective view showing a conventional expansion valve, Figure 2a is a front perspective view of a conventional thermal protection cover, Figure 2b is a rear view of a conventional thermal protection cover, and Figure 3 is a thermal protection of Figure 2 in the expansion valve of Figure 1 It is a perspective view which shows the state which covered the cover.

Referring to Figure 1, one side of the expansion valve (6) is connected to the refrigerant pipe (7), the front of the expansion valve (6) is formed with a stud bolt (61) used for fastening with the thermal protection cover (8) It is. Referring to FIG. 2A, the heat dissipation preventing cover 8 has a shape in which one side covers the refrigerant pipe, and a stud bolt 61 formed on the front surface of the expansion valve 6 and a bolt hole 81 are formed on the front surface thereof. Meanwhile, referring to FIG. 2B, a spacer 82 is formed on the inner side of the cover 8 to support the cover 8 and the expansion valve 6 apart from each other.

Referring to FIG. 3, there is shown a shape for fastening the thermal protection cover 8 to the expansion valve 6. A nut fastening seating surface 9 is formed around the bolt hole 81. A nut (not shown) is coupled to the stud bolt 61 protruding into the bolt hole 81.

This structure requires a separate fastening seating surface and a stud bolt to be formed on the expansion valve 6 in order to assemble the thermal protection cover 8, and also requires an assembly nut. This leads to an increase in the number of parts and an increase in the number of assembly operations, which in turn increases the unit price.

Therefore, the present invention is to solve the conventional problems as described above, the thermal damage prevention cover structure of the expansion valve of the air conditioner can omit the separate parts and separate assembly process without forming a separate shape or bolt on the expansion valve The purpose is to provide.

In order to achieve the above object, the present invention is a thermal damage prevention cover surrounding the air conditioner expansion valve connected to the refrigerant pipe to one side, the inside of one side of the cover is formed with a refrigerant pipe holder for fixing the refrigerant pipe and the other side A side support part is formed inside the inner side of the expansion valve to prevent the left and right flow of the expansion valve. A guide part is formed on the upper or lower side of the cover to face the upper or lower surface of the expansion valve when the expansion valve is fastened. The inner side of the cover facing the guide portion is formed with an elastic member for elastically supporting the expansion valve.

This enables fastening of the cover and the expansion valve only by the elastic support structure inside the cover without a separate part or assembly process.

Here, the refrigerant pipe holder is made of an elastic material having a substantially "C" shape, so that when the refrigerant pipe is inserted, it can elastically support the refrigerant pipe to provide a fastening force. The elastic member of the "C" shape is the shape that can be most securely fixed to the cylindrical refrigerant pipe by the simplest operation, by providing it to the thermal protection cover of the present invention provides a secure fastening force.

The elastic member is composed of a cantilever-shaped elastic beam protruding rearward from the front inner side of the cover, the end of the elastic beam is configured to hang the back of the expansion valve to prevent the front and rear flow of the expansion valve is formed can do. This ensures that the expansion valve fits in place in the cover when the expansion valve and the cover are fastened, and firmly secures the expansion valve in the up and down direction when entering the cover and prevents the expansion valve from retreating and exiting.

A front support part may be formed inside the front side of the cover to support the front side of the expansion valve and space the front side of the expansion valve from the front side of the cover.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the thermal damage prevention cover structure of the expansion valve according to the present invention.

Figure 4 is a perspective view of the expansion valve in one embodiment according to the present invention. When applying the thermal protection cover structure according to an embodiment of the present invention expansion valve (1) does not have a separate fastening seat surface or stud bolt shape as shown in FIG. The refrigerant pipe 2 is connected to one side of the expansion valve 1. The upper rounded part is a diaphragm.

Figure 5a is a perspective view of the rear of the thermal protection cover as an embodiment according to the present invention. One side surface of the cover 3 is provided with two refrigerant tube holders 31 having a substantially "C" shape made of an elastic material to elastically fix the refrigerant tube. The other side is formed with a side support portion 32 for supporting the side of the expansion valve (1). The refrigerant pipe holder 31 and the side support part 32 elastically fix the expansion valve 1 by holding the refrigerant pipe 2 while preventing the expansion valve 1 from flowing left and right.

The diaphragm which faces the diaphragm portion of the expansion valve 1 when the expansion valve 1 is inserted into the cover 3 and guides the expansion valve 1 to a predetermined position inside the cover 3 on the upper surface of the cover 3. The guide part 34 is formed. The lower surface of the cover 3 supports the lower surface of the expansion valve 1 located inside the cover 3 by the guide portion 34 and pushes the expansion valve 1 upward so that the expansion valve 1 flows up and down. The elastic beam 35 which is elastically fixed so as not to be formed is formed. The elastic beam 35 extends from the front inner side of the cover 3 to the rear, and the locking jaw 36 is formed at the end of the elastic beam 35. On the other hand, the front surface of the cover 3 is provided with a front support part 33 which supports the front surface of the expansion valve 1 and provides a space between the front surface of the expansion valve 1 and the front surface of the cover 3.

FIG. 5B is a side view of the thermal protection cover of FIG. 5A mounted on the expansion valve. FIG. The expansion valve 1 is fixed in the vertical direction by the guide portion 34 and the elastic beam 35, in particular, the locking jaw 36 and the front support portion 33 is fixed in the front and rear direction of the expansion valve (1).

6A is a rear perspective view of the expansion valve mounted on the thermal protection cover of FIG. 5A. The refrigerant pipe holder 31 and the side support part 32 of the cover 3 fix the expansion valve 1 in the horizontal direction, and the guide part 34 and the elastic beam 35 move the expansion valve 1 in the vertical direction. The front support part 33 (not shown in FIG. 6A) and the locking jaw 36 fix the expansion valve 1 in the front-rear direction.

FIG. 6B is a front perspective view of FIG. 6A. As shown in the figure, the cover 3 may be fixed to the cover 3 and the expansion valve 1 by simply inserting the cover 3 into the expansion valve 1 without any other parts or assembling process.

As described above, the thermal damage prevention cover of the air-conditioning expansion valve of the present invention is easy to detachable and reduce the manufacturing cost by allowing the expansion valve and the cover to be fastened only by the elastic support structure in the cover without a separate part and an assembly process. .

The present invention is not limited to the described embodiments, and various modifications and changes can be made to those skilled in the art without departing from the spirit and scope of the present invention. Such modifications or modifications may be made to the present invention. It belongs to the claims of the.

Claims (4)

As the anti-heat cover that surrounds the expansion valve of the air conditioner connected to the refrigerant pipe on one side, A refrigerant pipe holder for fixing the refrigerant pipe is formed inside one side of the cover, and a side support part for supporting the other side of the expansion valve to prevent left and right flow of the expansion valve is formed inside the other side. A guide part is formed on the upper or lower surface of the cover to support the upper or lower surface of the expansion valve when the expansion valve is fastened, and an elastic member is formed on the inner side of the cover facing the guide to elastically support the expansion valve. The refrigerant pipe holder is made of an elastic material having a "C" shape, and when the refrigerant pipe is inserted, the air conditioner expansion valve thermal damage prevention cover, characterized in that it provides a fastening force by elastically supporting the refrigerant pipe. delete The method of claim 1, The elastic member is made of a cantilever-shaped elastic beam protruding rearward from the inside of the front of the cover, the end of the elastic beam is formed with a locking step to prevent the front and rear flow of the expansion valve by hanging the rear of the expansion valve Air conditioner expansion valve thermal damage prevention cover, characterized in that. The method according to any one of claims 1 to 3, An air conditioner expansion valve cover for preventing deterioration of air, characterized in that a front support portion is formed inside the front of the cover to support the front of the expansion valve and spaced apart from the front of the expansion valve.

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