KR0183418B1 - Receiver driver for a car's airconditioner - Google Patents

Abstract

The present invention provides a drying device for a vehicle air conditioner that is simple to assemble and has a small number of processes, and which can solve the problem of the refrigerant suction pipe coming off from the upper member. The drying apparatus according to the present invention includes a tank (1) having an open top, a refrigerant suction pipe (23) disposed at the center of the tank (1) having a filter locking portion (4) at an intermediate position in the longitudinal direction, and a refrigerant suction hole. A support member 24 having a 27 and attached to the lower end of the draft tube 23 to contact the bottom center portion 22 of the tank 1 to support the draft tube 23 at the center of the tank; 30 is filled to the filter portion 40 which is supported on the filter catching portion 4 of the draft tube 23 and is maintained in the tank 1, and the inlet 32 and the outlet 33 of the refrigerant and the outlet thereof. It is connected to the upper end of the draft tube 23 is fitted with a central joining hole 34, the sealing member for sealing the upper end of the draft tube 32 is installed in the upper hole of the tank (1) It consists of an upper member 31 that is fitted to be fixed.

Description

Drying device used for air conditioner of vehicle

1 is a longitudinal sectional view showing a drying apparatus for a vehicle air conditioner according to an embodiment of the present invention.

Figure 2 is a perspective view of the support member attached to the lower end of the draft tube of the drying apparatus.

Figure 3 is an enlarged cross section showing the central junction of the upper member of the drying apparatus.

4 is a longitudinal sectional view of various upper members employed in the drying apparatus.

Figure 5 is a longitudinal sectional view showing a conventional drying apparatus.

* Explanation of symbols for main parts of the drawings

1: tank 4: filter jam

21: tank bottom 22: the bottom center of the tank

22a: slope 23: draft tube

24: support member 27: suction hole

28a: support plate 28b: pressing plate

29: lower filter 29a: upper filter

30: desiccant 31: upper member

32: inlet 33: outlet

34 center junction 36 base rod member

39: liquid refrigerant 40: filter unit

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner drying apparatus for temporarily storing liquid refrigerant as used in a cooling system of an automobile.

5 shows a conventional drying apparatus for use in a cooling system of a motor vehicle. The cartridge-shaped filter part 3 is installed in the intermediate position of the tank 1 which has a hole in the upper part, and this filter part 3 removes the desiccant 2 and dust for removing the moisture in the refrigerant. It consists of a lower filter 3a, such as a felt, and an upper filter 3a 'for removal, and a circular container body 3b and a lid 3c having a net or a plurality of small holes for embedding them. have.

The refrigerant suction tube 5 penetrates through the center hole of the filter portion 3 and has a filter catching portion 4 (formed as a tube expansion protrusion) that hangs the circular container body 3b. The filter part 3 is fixed to the refrigerant | coolant suction pipe | tube 5 by the stop wheel 3d inserted in the upper position of the cover 3c.

The upper end portion 12 of the draft tube 5 is sealed to the upper member 6 by expanding the tube from above after applying the sealant. Then, the draft tube 5 and the cartridge-shaped filter portion 3 caught on the filter catching portion 4 of the draft tube 5 are held in a suspended state with respect to the upper member 6, and the tank (1) is inserted into.

The upper member 6 has an inlet 8 through which the refrigerant suction pipe 7 is connected, and an outlet 10 through which the refrigerant discharge pipe 11 is connected, and as shown in FIG. 5, an upper hole of the tank 1. Fitting to the part, welding is fixed.

Thus, the liquid refrigerant flowing into the tank 1 from the suction pipe 7 and the inlet 8 passes through the filter part 3 and is once stored in the lower part of the tank 1. The liquid refrigerant stored in the lower part of the tank is drawn out from the hole 9 (distant from the bottom bottom 13 of the bottom of the tank 1) in the lower part of the suction pipe 7, and passes through the discharge port 10 of the upper member 6 to discharge the discharge pipe ( 11) is discharged from the evaporator through a temperature expansion valve (not shown) or the like to evaporate.

In the conventional drying apparatus, as described above, the filter unit 3 is fixed and assembled in advance, and the filter unit 3 is hung on the draft tube 5 to be suspended. Therefore, the upper end 1 (2) tube of the draft tube 5 is enlarged. It is necessary to fix firmly to the upper member 6. In the conventional drying apparatus, the assembly is very cumbersome, and the expansion of the draft tube 5 causes the problem that fine powder powder is harmful to the cooling cycle, and the filter unit 3 is suspended when the expansion of the tube is insufficient. There existed a problem that the refrigerant | coolant suction tube 5 peeled off from the upper member 6, falls into the tank 1, and it becomes impossible to take out liquid refrigerant.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drying apparatus for a vehicle air conditioner which is simpler to assemble and has fewer processes than the conventional one, and can solve the problem of the refrigerant suction pipe falling off from the upper member.

In order to achieve the above object, the drying apparatus of the present invention and the tank (1) having a hole in the top; A refrigerant suction pipe (23) having a filter catching portion (4) f at an intermediate position in the height direction (longitudinal direction) and disposed at the center of the tank (1); A support member 24 having a refrigerant suction hole 27 and attached to the lower end of the suction tube 23 and abuts the bottom center portion 22 of the tank 1 to support the suction tube 23 at the tank center portion. )Wow; A filter portion 40 filled with a desiccant 30 and supported on the filter catching portion 4 of the draft tube 23 and held in the tank 1; A coolant inlet 32 and outlet 33 and a central junction 34 which communicates with the outlet and is inserted into an upper end of the draft tube 23 and inserted into the upper end of the draft tube 32. The upper member 31 is provided with a sealing member 36 for hermetically sealing. The upper member 31 is fitted into a top hole of the tank 1 and fixed. In addition, the support member 24 is configured in a cylindrical shape (cylindrical shape).

In addition, the filter portion 40 is a support plate 28a which has a small hole through which a plurality of liquids can pass and is inserted and held on the filter catching portion 4 of the draft tube 23, and the lower filter placed on the support plate. (29) and an amount of desiccant (30) filled on the filter, an upper filter (29a) covering the desiccant, and a small hole through which a plurality of liquids can pass, and placed in contact with the upper filter (29a). It is preferable that it consists of the press board 28b.

According to the drying apparatus configured as described above, the refrigerant suction pipe 23 and the filter portion 40 are fixed in the tank 1, and the upper member 31 is fitted into the hole in the upper end of the tank to fix the center joint of the upper member. The spherical body 34 can be assembled in such a state as to be fitted in close contact with the upper end of the draft tube 23, and the assembly is simpler and the number of processes is smaller than that of the conventional drying apparatus which enlarges the upper end of the draft tube and fixes it to the upper member.

In addition, according to the drying apparatus assembled as described above, a support member 24 having a coolant suction hole 27 is attached to the lower end of the coolant suction tube 23, and the support base 24 is attached to the tank bottom center portion 22. The suction tube 23 is supported at the center of the tank so that the load of the suction tube 23 and the filter portion 40 hanging on the suction tube can be supported by the support member 24. The refrigerant suction pipe 23 falls from the upper member 31 even if the upper end of the tube 23 is inserted into the center joint hole 34 of the upper member 31 and the sealing portion 36 is sealed. It can solve the problem.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 3.

In FIG. 1, the tank 1 has an open top and has a cylindrical shape. In addition, the bottom 21 of the tank is formed in the shape of a mortar having a data inclined surface 22a directed toward the flat bottom center 22. The coolant suction tube 23 is disposed at the center of the tank 1, and the filter catching portion 4 is formed to expand and protrude at an intermediate position in the longitudinal direction (height direction).

The support member 24 is attached to the lower end of the draft tube 23, and the attachment hole 25 is inserted into the lower end of the draft tube 23 so that the end 26 in the hole abuts; A coolant suction hole 27 (may be a transverse through-hole communicating with the lower end of the mounting hole 25) is formed by the lower end groove of the side hole communicating with the attachment hole 25. In addition, the support member 24 is formed as a suction pipe attachment member having a shape (shown in FIG. 2) having a lower inclined surface 24a guided and stopped to the flat tank bottom center portion 22 along the inclined surface 22a. The draft tube 23 is supported by the tank center portion as shown in FIG. 1 by bringing the support member 24 as the draft tube attachment member into contact with the bottom center portion 22 of the tank 1.

The filter portion 40 is supported on the filter engaging portion 4 of the draft tube 23 and held in the tank 1. The filter portion 40 includes a support plate 28a formed of a metal or mesh disk having a small hole through which a plurality of liquids can pass, and the support plate 28a has a central hole in the draft tube 23. ) Into the filter hook (4). In addition, the filter portion 40 is for removing dust in the refrigerant, and a lower filter 29 such as felt placed on the support plate 28a; A predetermined amount of desiccant 30 charged on the lower filter to remove moisture in the refrigerant; An upper filter 29a such as a felt for removing dust in the refrigerant and covering the desiccant 30; It is composed of a press plate 28b having a small hole through which a plurality of liquids fixed on the upper filter 29a can pass through, formed of a disk of a metal or net shape having a hole, and a draft tube 23 fitted into the center hole. .

In addition, the outer periphery and the center hole of the support plate 28a and the presser plate 28b are attached in the shape of a sunshade, and the outer sunshade surface is almost in contact with the inner circumferential surface portion of the tank 1. However, the shade of the support plate 28a and the press plate 28b may not be necessary. In addition, the outer diameter of the lower filter 29 and the upper filter 29a is slightly larger than the diameter of the inner surface of the tank 1, and is configured to elastically contract the outer diameter to be inserted into the tank 1, The outer diameters of the filter 29 and the upper filter 29a may be equal to the diameter of the inner surface of the tank 1.

The upper member 31 is fitted into the top hole of the tank 1 as shown in FIG. 1, and is fixed by welding the tank joint. The upper member 31 communicates with the inlet port 32 for attaching the refrigerant inlet pipe (not shown), the outlet port 33 for attaching the refrigerant discharge pipe (not shown), and the outlet port 33. The center junction hole 34 inserted into the upper end part of the draft tube 23 is provided. Inside the splice 34, a sealing member 36 such as an O-ring for hermetically sealing the upper end of the draft tube 23 is provided, and as shown in FIG. It is fixed by pinching the lower tip part 35. Therefore, when the upper member 31 is fitted into the upper end of the tank 1, the upper end of the draft tube 23 is fitted into the inner hole 37 of the splice 34, and the sealing member 36 Is sealed.

In addition, although the upper member 31 shows a case in which the shape shown in (a) of FIG. 1 to FIG. 4 is used, the present invention is not limited thereto, and the shape shown in (b) of FIG. Even if it consists of the upper member 31, such as the shape shown in (c) of FIG. 4, it can apply in common.

In order to assemble the drying apparatus configured in this way, the support plate 28a and the lower filter 29 are inserted from the upper end of the draft tube 23 having the support member 24 attached to the lower end so as to be caught on the filter catching portion 4. Then, when the draft tube 23 holding the support plate 28a and the lower filter 29 are inserted from the upper hole in the tank 1, the lower end of the draft tube 23, that is, the support member 24, is inserted. The portion of) slides down along the inclined surface 22a of the tank bottom 21 and stops at the flat center portion 22 of the tank bottom 21. On the other hand, due to the elasticity of the lower filter 29, the upper portion of the draft tube 23 is located in the center of the tank (1).

Next, a predetermined amount of desiccant 30 is filled on the lower filter 29 from the upper hole of the tank 1, the upper filter 29a and the pressing plate 28b are covered, and the upper member 31 is again attached to the tank 1. ) Into the top hole.

In this case, since the upper end of the draft tube 23 is located at the center of the tank, the upper end of the draft tube 23 is fitted into the inner hole 37 of the center joint hole 34 of the upper member, and is sealed with an O-ring or the like. It is hermetically sealed by the member 36. In addition, the support member 24 ensures an appropriate clearance as shown in FIG. 1 between the flat center portion 22 of the tank bottom 21 and the lower end portion of the draft tube 23.

After the upper member 31 is fitted into the upper end of the tank 1, the joint with the tank 1 is fixed by welding or the like to seal the tank 1. Therefore, in the gaseous phase and liquid phase refrigerant flowing from the inlet 32, the liquid phase refrigerant passes through the filter portion 40 to remove moisture and dust, and is stored in the lower portion of the tank 1.

The liquid refrigerant 39 passes through the suction hole 27 of the support member 24 and is supplied to an oodo expansion valve (not shown) through the suction tube 23 and the discharge port 33. Furthermore, the gaseous refrigerant stored in the upper portion of the tank 1 is not leaked toward the outlet 33 because the junction between the upper end of the draft tube 23 and the upper member 31 is hermetically sealed.

In this embodiment, although the shape of the tank 1 was made into a cylindrical shape, it is not necessarily cylindrical, but the upper member 31, the filter part 40, etc. may be matched by tank negotiation.

According to the drying apparatus for a vehicle air conditioner according to the present invention, the refrigerant suction tube (23) and the filter portion (40) are fixed in the tank (1), and the upper member (31) is fitted in the upper hole of the tank (1). Can be assembled in a state where the center fitting hole 34 of the upper member 31 is closely fitted to the upper end of the draft tube 23, and is enlarged compared to a conventional drying apparatus that enlarges the upper end of the draft tube and fixes it to the upper member. There is an advantage that the assembly is simple and the number of processes is small.

In addition, in the drying apparatus assembled as described above, a support member 24 having a refrigerant suction hole 27 is attached to the lower end of the refrigerant suction tube 23, and the support member 24 is the center of the tank bottom 22. The suction tube 23 is supported at the center of the tank, so that the load of the suction tube 23 and the filter portion 40 hanging on the suction tube can be supported by the support member 24, and the suction tube 23 can be supported. An appropriate clearance between the pipe 23 and the tank bottom can be ensured by the support member 24. Therefore, even if the upper end portion of the draft tube 23 is inserted into the center joint hole 34 of the upper member 31 and sealed with the sealing member 36, the refrigerant suction tube 23 is the upper member 31. The problem that comes off from) can be solved.

Claims (3)

An inlet port 32 of the refrigerant for introducing the refrigerant in the tank 1, an outlet 33 through which the liquid refrigerant stored in the lower portion of the tank flows out, and a refrigerant suction pipe installed to allow the liquid refrigerant to flow out from the outlet 33 ( A drying apparatus for a vehicle air conditioner composed of 23, comprising a support member 24 formed in a cylindrical shape and abutting the bottom central portion 22 of the tank 1, wherein the support member 24 is provided. Drying device for a vehicle air conditioner, characterized in that it is composed of one end attached to the lower end of the refrigerant suction pipe (23), and the other end having a refrigerant suction hole (27). 2. Drying apparatus for a vehicle air conditioner according to claim 1, characterized in that the bottom center portion (22) of the tank (1) is a flat surface. The bottom center portion 22 of the tank 1 is a flat surface, and the bottom 21 of the tank has an inclined surface 22a, the inclined surface 22a being the same as the flat surface. Drying device for a vehicle air conditioning, characterized in that connected.