JPS58191624A - Cleaning unit for air conditioner of automobile - Google Patents

Abstract

PURPOSE:To enable checking of possible vibration sound by providing a covex on the top and bottom surfaces of an evaporator housd in a cooling case with a clearance shaped on the surface of a case copying it opposite thereto in such a manner that a vibrationproof rubber is mounted to the clearance. CONSTITUTION:An evaporator 2 is supported in a case 1 with a vibrationproof rubber 12 as interposing member. Vibration transmitted to the evaporator 2 from the side of a compressor 8 is damped with the case 1 and that transmitted to the side of a dash board 4 attenuated with the vibrationproof rubber 12 to prevent the generation of vibration sounds from the dash board 4. The vibrationproof rubber 12 having a heat insulating property can check heat conduction between the evaporator 2 and the case 1 and ultimately the dew formation of the surface of the case 1. The mounting of the vibrationproof rubber 12 is done by fitting a projection 10 provided on the evaporator 2 into a concave provided into the case 1. This fit-in construction eliminates troubles such as screwing in the assembly work.

Description

[Detailed description of the invention] The present invention relates to knits, and particularly to support structures for evaporators.

As a conventional cooling unit, there is one shown in FIG. 1, for example. An evaporator 2 is housed in a cooling unit case l, and is housed in a dash panel 4 by mounting feet 3. As shown in FIG.
The refrigerant vapor sent from the expansion valve side is passed through and dehumidifies and cools the air that is pumped from the intake box side through the ventilation window IA. The refrigerant that has passed through the evaporator 2 is returned to the compressor 8 side through a pipe 6 and a flexible hose 7.

In this conventional system #, the evaporator 2 has a sealing material 5
Since it is mounted in a rigid structure to the case 1 with the compressor 8 in between, the impression of the compressor 8 is transmitted through the flexible hose 7 and piping 6 to the evaporator 2 and the cooling unit case 1.
is vibrated, and this vibration is transmitted through the groove 3 and impresses the dash panel 4. This impression could become a source of indoor noise, with the dash panel 4 acting in the same way as the speaker's impression board and appearing as a muffled sound inside the city.

This noise was difficult to sufficiently remove even though the insulator 9 was attached to the dash panel 4.

The present invention has been made in view of the above-mentioned circumstances, and provides a cooling unit capable of suppressing the generation of imaging noise by inserting and supporting vibration-proof rubber between the evaporator and its case. The purpose is to

FIG. 3 shows one embodiment of the present invention, and is a sectional view of the case 1 and the evaporator 2 installed. As shown in FIG. 4, the evaporator 2 is provided with a pair of rectangular protrusions 10 on each of its upper and lower surfaces (or both side surfaces). In the case 1, the shape of the portion facing the upper and lower surfaces of the evaporator 2 is the upper surface of the evaporator.

The configuration is such that the shape consisting of the lower surface and the protrusion 10 is traced with a certain gap. A vibration isolating rubber 12 having a shape that holds the projection 10 is fitted between the case l and the projection lO, and the evaporator 2 is supported by the case l using the vibration isolating rubber 12 as an interposed member. A ventilation-preventing seal 13 is placed in the gap between the case 1 and the evaporator 2 except for the vibration-proof rubber 12 portion.

This seal 13 is made of a soft material such as sponge, and prevents vibration from being transmitted from the evaporator to the case side.

In such a structure, the upper and lower surfaces of the case l are made into a single structure that can be assembled with the ventilation window IA frame, and the melt-proof rubber 12 is fitted to the protrusion 10 of the evaporator 2, and seals 13 are provided on the upper and lower surfaces. It is pasted to form an assembled structure that is installed inside the case 1.

Therefore, according to the evaporator support structure of the present invention, the evaporator 2 is mounted on the case 2 using the melt-proof rubber 12 as an interposed member.
Since the vibrations transmitted from the compressor 8 side to the evaporator 2 are transmitted to the case l and further to the dash board 4 side, the anti-fusible rubber 12 reduces the vibrations transmitted from the compressor 8 side to the dashboard 4 side, thereby preventing the generation of vibration noise of the dashboard 40. . Also,
Since the melt-proof rubber 12 has heat insulating properties, the evaporator 2
It is possible to suppress heat conduction between the case 1 and the case 1, thereby suppressing condensation 4 on the surface of the case 1.

In addition, in the present invention, the installation of the melt-proof rubber 12 provided between the case 1 and the evaporator 2 is carried out in the case 1 [having four parts,
Because of the fitting structure in which the projections 10 are provided on the evaporator 2, the evaporator can be supported reliably and easily without the need for screwing or other trouble during assembly work.

[Brief explanation of the drawing]

Figure 1 is a side view showing the mounting structure of the cooling unit.
Figure 2 is a cross-sectional view of a conventional cooling unit taken along A-A4 of Figure m1, Figure 3 is a cross-sectional view of a cooling unit showing an embodiment of the present invention, and Figure 4 is the evaporator and anti-vibration rubber shown in Figure 3. FIG. l・°・Cooling unit case, IA... Ventilation window, 2... Evaporator, 3... Mounting foot, 4... Dashboard, 8... Compressor, 10... Protrusion, 12... Meltproof rubber, 13... Seal.

Claims (1)

[Scope of Claims] 111. A cooling unit for an automatic heavy-duty air conditioner, characterized in that an evaporator housed in a cooling unit case is supported by a vibration isolating rubber provided between the case and the case. (2) The evaporator has protrusions on the top and bottom surfaces or both sides,
The case has a structure in which the part facing the surface of the evaporator having the projections traces a gap between the cores, and the root-proofing rubber i is structured to be partitioned into the gap lvI between the projections and the case. A cooling unit for an air conditioner for an automobile according to claim 1, characterized in that: t.