JPH0532327Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle air conditioner, and more particularly to a mounting structure for a heat exchanger that is mounted in a cassette type inside a case through an installation hole in the case.

[Prior Art] The present applicant previously filed a utility model registration application (1) dated October 20, 1988, for a cooling device that can be installed in a cassette type inside a case through an assembly hole provided in the case. Alternatively, he proposed a heat exchanger for heating. After this heat exchanger is inserted into the case through the built-in hole,
It is configured to be screwed in place.

[Problems to be solved by the invention] However, in the case of the above-mentioned cassette-type heat exchanger, when it is installed in the case, there is a gap between the frame of the heat exchanger and the inner surface of the case. I had a possible problem. For this reason, the air supplied from the connection port is discharged after passing between the frame and the inner surface of the case without passing through the heat exchanger, resulting in poor heat exchange efficiency. As a result, a large heat exchanger is required to obtain the required heat exchange efficiency, and vehicle air conditioners are becoming larger. Additionally, as the heat exchanger installed inside the case vibrates independently of the case fixed to the vehicle as the vehicle vibrates, the connections that supply and discharge refrigerant or heat medium to the heat exchanger become fragile. There is also the problem of leakage of refrigerant or heating medium.

[Purpose of the invention] In view of the above-mentioned conventional drawbacks, the purpose of the invention is to
Provides a mounting structure for a heat exchanger in a vehicle air conditioner that allows the heat exchanger to be mounted in close contact with the inner surface of the case, increases heat exchange efficiency, downsizes the device, and effectively prevents damage. It's about doing.

[Means for Solving the Problems] Therefore, the present invention provides a heat exchanger that is installed in the case through a built-in hole provided in the case that exchanges heat with the air supplied from the connection port and discharges it from the air outlet. In a vehicle air conditioner that can be installed in a cassette type,
The inside of the case corresponding to the installation hole is formed so that its height gradually decreases toward the back, and the frame of the heat exchanger installed in the case is formed into a wedge shape corresponding to the inside of the case. An elastically deformable airtight material is attached to each side of the frame, and when the heat exchanger installed through the assembly hole is fixed to the inside of the case by the fixing means, the heat exchanger is fixed to the inner part of the case. The airtight material is elastically deformed by being drawn to close the gap between the inner surface of the case and the frame, thereby forming a heat exchanger.

[Operation of the invention] Since the invention is constructed as described above, when the heat exchanger is fixed in the case through the assembly hole by the fixing means, heat exchange is performed by the wedge engagement action of the frame with the support part of the case. The movement of the container is restricted, and the gap between the inner surface of the case and the frame is closed by the elastically deformable airtight material, allowing the air supplied from the connection port to reliably pass through to the heat exchanger. This can prevent vibration of the heat exchanger inside the case and improve heat exchange efficiency.

[Example] An example of the present invention will be described below with reference to the drawings.

Fig. 1 is a perspective view schematically showing a case of a vehicle air conditioner according to the present invention, Fig. 2 is a longitudinal cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line B-B in Fig. 1. 4 is a longitudinal sectional view taken along the line C-C in FIG. 1, and the case 3 of the vehicle air conditioner 1 is made of synthetic resin and consists of a front case 5 and a rear case 7, which are vertically divided into two parts. It is configured. Connection ports 9 and 11 connected to an air blower (not shown) are integrally formed on the upper left side of the front case 5 and the rear case 7 as shown in FIG. 1. Further, on the right side of the front case 5 and the rear case 7 as shown in FIG.
5. Defroster outlet 17 (defroster outlet of rear case 7 is not shown) and foot outlet 19
(The foot outlet of the rear case 7 is not shown) are integrally molded.

On the left front side of the front case 5, there is a first assembly hole 2 having a required width and a height reaching the upper and lower plates.
1 is formed. and the first assembly hole 2
The upper and lower plates of the front case 5 and the rear case 7, which correspond to the upper and lower ends of the case 1, have a structure in which the height inside the case 3 gradually decreases from the front toward the rear, and the width gradually increases from the front toward the rear. Ribs 23, 25, 27, and 29 as supporting portions that become narrower are integrally molded. A blind plate 31 is removably attached to the front case 5 corresponding to the first assembling hole 21 so as to close the first assembling hole 21. In addition, the first
Through holes 33a, 33b are formed in the rear case 7 facing the assembly hole 21 at a required interval in the vertical direction, and blind plates 35a, 3 are formed in the through holes 33a, 33b.
5b is removably inserted.

A second installation hole (not shown) is formed in the right front surface of the front case 5, and a heating heat exchanger 37 is installed in the case 3 in advance through the second installation hole. Incidentally, openings 39 and 41 for draining are formed in advance on the bottom surfaces of the front case 5 and the rear case 7 corresponding to the first assembly hole 21, and the openings 3
A blind plate 43 is removably attached to 9 and 41.

Fig. 5 is a perspective view schematically showing a cooling heat exchanger incorporated in a cassette type in case 3, Fig. 6 is a side view in the direction of arrow D in Fig. 5, and Fig. 7 is a plan view of Fig. 5. and the frame 47 of the cooling heat exchanger 45
The ribs 23, 25, 27, 29 are made of synthetic resin.
It is shaped like a wedge, with a height that gradually decreases toward the back and a width that gradually narrows toward the back. Between the upper plate 47a and the lower plate 47b of the frame 47, there is a flat tube 49a folded back in a meandering manner in the vertical direction, and a bent portion 49 of the flat tube 49a.
A heat exchange member 49 consisting of fins 49b attached to the outer surface except for portions c is attached via a heat insulating material 51. Also, the side plate 47 of the frame 47
Attachment screw 53 constituting a part of the fixing means is shown in c.
a, 53b are insert-molded according to the through holes 33a, 33b. The upper plate 47a and the lower plate 47
An elastically deformable airtight material 55 such as urethane rubber is attached to the outer surfaces of the side plates 47b and 47c.

Frame 4 to which the heat exchange member 49 is attached
A shielding plate 57 having a size that covers the first assembly hole 21 is attached to the front surface of the shielding plate 7, and an airtight material 59 made of elastically deformable urethane rubber or the like is attached to the periphery of the back surface of the shielding plate 57.
is pasted.

Next, a method of incorporating the cooling heat exchanger 45 in a cassette type into the case 3 configured as described above will be explained.
This will be explained with reference to FIG. 8, which shows a longitudinal section of the case 3 in which the cooling heat exchanger 45 is incorporated.

After removing the blind plate 31 from the first assembly hole 21 and opening it, the cooling heat exchanger 45 is inserted into the first assembly hole 21 so that the mounting screws 53a, 53b and the through holes 33a, 33b are aligned. When inserted into the case 3 in this manner, the shaft ends of the mounting screws 53a, 53b are projected out of the case 3 through the through holes 33a, 33b. At this time, the airtight material 55 and the shielding plate 57 attached to the upper plate 47a, lower plate 47b, and side plate 47c
The airtight material 59 affixed to the case 3 is in contact with the inner surface and front surface of the case 3 in a non-elastically deformed state. The mounting screw 53a protrudes outside the case 3 in the above state,
Nut 6 forming part of the fixing means for 53b
When 1a and 61b are tightened with nuts, the cooling heat exchanger 45 is drawn toward the back of the case 3. At this time, the height of the inside of the case 3 in which the cooling heat exchanger 45 is assembled becomes gradually lower due to the ribs 23, 25, 27, and 29 toward the back, and the width becomes gradually narrower. Since it is formed into a wedge shape corresponding to the ribs 23, 25, 27, and 29, the airtight material 55 is elastically deformed as the cooling heat exchanger 45 is pulled in the case 3, and the frame 47 and the inner surface of the case 3 are The gap is closed. Similarly, the airtight material 59 attached to the shielding plate 57 is elastically deformed, and the gap between the front of the case 3 and the shielding plate 57 is closed. As a result, the first assembly hole 21 is sealed by the shielding plate 57.

When the cooling heat exchanger 45 is assembled into the case 3, a drain pan (not shown) is attached to the lower surface of the case 3 after the blind plates 43 are removed from the openings 39 and 41 to open them.

In this way, in this embodiment, when the cooling heat exchanger 45 is installed into the case 3 through the first installation hole 21, the wedge action of the frame 47 that engages with the ribs 23, 25, 27, and 29 Movement of the cooling heat exchanger 45 within the case 3 is restricted, and damage to the cooling heat exchanger 45 can be prevented. In addition, the airtight material 55 that comes into contact with the inner surface of the case 3 and elastically deforms closes off the space between the inner surface of the case 3 and the frame 47 to ensure that the air supplied from the connection ports 9 and 11 is directed to the heat exchange member 49. It is possible to increase the heat exchange efficiency by allowing it to pass through.

[Effects of the invention] Therefore, the present invention is a vehicle-use device that allows the heat exchanger to be installed in close contact with the inner surface of the case, increases heat exchange efficiency, downsizes the device, and effectively prevents damage. It is possible to provide a mounting structure for a heat exchanger in an air conditioner.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing a case of a vehicle air conditioner according to the present invention, Fig. 2 is a longitudinal cross-sectional view taken along the line A-A in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line B-B in Fig. 1. Figure 4 is a vertical sectional view taken along the line CC in Figure 1, Figure 5 is a perspective view schematically showing the heat exchanger, Figure 6 is a side view in the direction of arrow D in Figure 5, and Figure 7. is the plan view of Fig. 5, Fig. 8
The figure is an explanatory diagram showing the effect. In the figure, 1 is a vehicle air conditioner, 3 is a case, 5 is a front case, 7 is a rear case, 9 and 11 are connection ports, 1
3 and 15 are face outlet, 17 is a defroster outlet, 19 is a foot outlet, 21 is a first built-in hole, 37 is a heating heat exchanger, 45 is a cooling heat exchanger, 47 is a frame, 55, 59 is airtight material, 53
a, 53b are mounting screws as fixing means; 61
Nuts a and 61b serve as fixing means.

Claims (1)

[Scope of claim for utility model registration] For vehicles in which a heat exchanger can be built into the case in a cassette manner through an installation hole provided in the case, which exchanges heat with the air supplied from the connection port and discharges it from the air outlet. In the air conditioner, the inside of the case corresponding to the installation hole is formed so that its height gradually decreases toward the back, and the frame of the heat exchanger installed in the case is wedge-shaped according to the inside of the case. and an elastically deformable airtight material is attached to each side of the frame, and when the heat exchanger installed through the assembly hole is fixed to the inside of the case by fixing means,
A heat exchanger mounting structure characterized in that by drawing the heat exchanger to the back of the case, the airtight material is elastically deformed to close a gap between the inner surface of the case and the frame.