JPH0532326Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a mounting structure for a heat exchanger in a vehicle air conditioner.

[Prior Art] In the application for utility model registration (1) dated October 20, 1985, the applicant filed a patent application for a vehicle air conditioner, in which the air conditioner was pre-formed in the case and sealed with a blind cover. We have proposed a heat exchanger for cooling or heating that can be installed in a cassette type through an installation hole, which can improve installation workability after a vehicle is sold and can shorten installation time.

[Problems to be solved by the invention] However, when the heat exchanger described above is installed in a cassette type inside the case, the installation position of the heat exchanger relative to the case may shift due to vibrations of the vehicle, causing heat exchange with the case. The problem is that gaps tend to form between the container and the container. For this reason, a portion of the air supplied into the case is discharged from the air outlet through the gap without passing through the heat exchanger, resulting in poor heat exchange efficiency for cooling or heating. In addition, when the above gap occurs, the heat exchanger vibrates within the case separately from the case, so the core of the heat exchanger through which the refrigerant or heat medium passes, and the core of the heat exchanger that is fixed to the vehicle and connected to the core. There is also a problem in that the connection point with the supply pipe is damaged due to vibration of the heat exchanger, and the refrigerant or heat medium leaks.

[Purpose of the invention] In view of the above-mentioned conventional drawbacks, the purpose of the invention is to
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 inside of the case, prevents damage to the heat exchanger due to vehicle vibration, and improves heat exchange efficiency. It is about providing.

[Means for solving the problem] Therefore, in the present invention, the heat exchanger can be installed in a cassette type through the built-in hole formed in the case that exchanges heat with the air supplied from the connection port and discharges it from the air outlet. In the vehicle air conditioner, tapered support portions are formed on the upper and lower plates of the case corresponding to the installation holes, the width becoming gradually narrower toward the back and the height inside the case decreasing; The frame of the heat exchanger that is inserted through the installation hole is formed into a wedge shape that corresponds to the support part of the case, and when the heat exchanger is inserted into the case through the installation hole, the frame of the heat exchanger is inserted into the case. The heat exchanger mounting structure is configured such that each side surface can come into contact with the inner surface of the case.

[Operation of the device] Since the present invention is configured as described above, when the heat exchanger is inserted into the case along the support portion through the installation hole, the support portion gradually moves toward the back. The heat exchanger frame is formed into a tapered shape in which the width becomes narrower and the internal height gradually decreases toward the back, and the frame of the heat exchanger is formed in a wedge shape according to the support part, so that the outer surface of the frame This can be done by bringing the inside of the case into close contact with the inner surface of the case. This prevents the air supplied to the connection port from being discharged from the outlet without passing through the heat exchanger, thereby increasing heat exchange efficiency. Furthermore, since the heat exchanger vibrates integrally with the case fixed to the vehicle, it is possible to prevent damage to the heat exchanger.

[Embodiment] An embodiment of the present invention will now be described with reference to the drawings.

FIG. 1 is a perspective view schematically showing the case of the vehicle air conditioner according to the present invention, and FIG. 2 is A of FIG. 1.
3 is a partially broken sectional view taken along line B-B in FIG. 1, and FIG. 4 is a partially broken sectional view taken along line C-C in FIG. The case 3 is made of synthetic resin and has a two-part structure, and a connection port 5 is integrally molded at the upper left side of the case 3 in the figure, and a blower device (not shown) is connected to the connection port 5. Furthermore, a face outlet 7, a defroster outlet 9, and a foot outlet 11 are integrally formed on the right side of the case 3 in the drawing. A first installation hole 13 is formed on the left front side of the case 3 in the figure and is large enough to fit a cooling heat exchanger 27, which will be described later. The top and bottom surfaces of the case 3 have a width that gradually narrows toward the back from both sides of the top and bottom ends of the first assembly hole 13, and a height inside the case 3 that gradually decreases toward the back. Tapered support portions 15 and 17 are integrally molded. A blind cover 19 is removably attached to the first assembly hole 13. That is, the blind lid 19 is integrally molded with a plurality of hook portions 19a that engage with the inner surface of the case 3, and by engaging the hook portions 19a with the inner surface of the case 3, the first assembly hole 13 is inserted into the blind lid 19. sealed by. Said first assembly hole 1
Two through holes 21a, 21b are formed at a required distance in the vertical direction on the back surface of the case 3 facing the case 3, and a blind plate 23a, a blind plate 23a,
23b is detachably attached.

A second installation hole (not shown) is formed in advance on the right front side of the case 3 as shown in the figure, and the heating heat exchanger 25 is installed in the case 3 through the second installation hole.
installed inside. In addition, numeral 10 in the figure is a drain hole formed according to the installation position of the cooling heat exchanger 27.

5 is a partially cutaway perspective view of the cooling heat exchanger, FIG. 6 is a side view in the direction of arrow A shown in FIG. 5, and FIG. 7 is a plan view of FIG. Assembling hole 1
The frame 29 of the cooling heat exchanger 27, which is incorporated into the case 3 via the cooling heat exchanger 3, is integrally molded with a substantially U-shaped front surface, and the upper plate 29a and lower plate 29b of the frame 29 are attached to the supporting parts 15 and 17. Accordingly, the width gradually narrows from the front toward the back, and
It is shaped like a wedge, with the height gradually decreasing from the front toward the back depending on the height of the interior. A heat exchange member 31, which has fins 31b attached to a flat tube 31a folded in a meandering manner, is attached via a heat insulating material 33 between the upper plate 29a and the lower plate 29b. Covers 35a and 35b covering the bent portion 31c are integrally formed on the upper plate 29a and the lower plate 29b that support the bent portion 31c of the flat tube 31a. Side plate 29 of the frame 29
Attachment screws 37a and 37b are inserted into the through hole 21 in c.
Insert molding is performed according to a and 21b.
And the upper plate 29a, the lower plate 29b and the side plate 29
The outer surface of c has a required thickness, and an airtight material 39 such as elastically deformable urethane rubber is adhered thereto.

On the front side of the frame 29, there is a shielding plate 41 having a size that comes into contact with the periphery of the first assembly hole 13.
is attached, and two through holes 41a and 41b are formed in the upper part of the shielding plate 41. The through hole 41a has a refrigerant supply port 4 for the flat tube 31a.
3a, and a discharge port 43b for the refrigerant that has passed through the flat tube 31a is attached to the through hole 41b. An airtight material 40 such as elastically deformable urethane rubber is adhered to a shielding plate 41 that contacts the front surface of the case 3 corresponding to the installation hole 13 .

Next, a method of attaching the cooling heat exchanger 27 to the case 3 configured as described above will be explained.

In FIG. 8, which shows a state in which the cooling heat exchanger 27 is installed in the case 3, while elastically deforming the hook portion 19a that is engaged with the inner surface of the case 3,
By removing the blind cover 19 from the case 3, the first assembly hole 13 is opened. In this state, the cooling heat exchanger 27 is inserted into the case 3 through the first assembly hole 13 so that the through hole 21a and the mounting screw 37a are aligned with each other, and the through hole 21b and the attachment screw 37b are aligned with each other. Then, the shaft ends of the mounting screws 37a and 37b are projected outward from the through holes 21a and 21b. At this time, the airtight material 39 attached to the upper plate 29a, lower plate 29b, and side plate 29c of the frame 29 comes into contact with the upper and lower surfaces of the case 3 in a non-elastically deformed state, and the upper and lower ends thereof It is supported by 17. In the above state, the mounting screws 37a, 3 protrude outward.
When the nuts 45a and 45b are tightened to the case 7b, the cooling heat exchanger 27 inserted into the case 3 is pulled toward the back of the case 3 while being supported by the supports 15 and 17. As a result, the airtight material 39 that was in contact with the top and bottom surfaces of the case 3 is elastically deformed, and the upper plate 29 of the case 3 and the frame 29
a, the gap between the lower plate 29b and the side plate 29c is completely closed. Further, the airtight material 40 attached to the shielding plate 41 is elastically deformed as the nut is fastened, and the sealing plate 41 and the first assembly hole 1
3 is completely blocked.

In this way, in this embodiment, the case 3 corresponds to the first installation hole 13 into which the cooling heat exchanger 27 is installed.
Support parts 15 and 17 are formed inside the frame 29, the width of which gradually narrows toward the back, and the height of which gradually decreases.
By forming the side plate 29c into a wedge shape corresponding to the supporting parts 15 and 17, the first assembly hole 13
When the cooling heat exchanger 27 is assembled into the case 3 via the upper plate 29a and lower plate 29 of the frame 29,
b and each side surface of the side plate 29c is brought into contact with the inner surface of the case 3 via the elastically deformed airtight material 39, so that the distance between the inner surface of the case 3 and each side surface of the frame 29 can be closed off. This allows connection port 5
The air supplied from the heat exchange member 31 can be reliably passed between the fins 31b of the heat exchange member 31 for cooling. In addition, a cooling heat exchanger 27 is installed inside the case 3.
When the first assembly hole 13 is assembled, the first assembly hole 13 can be completely closed off by the shielding plate 41 that comes into contact with the front of the case 3 via the elastically deformed airtight material 40. This prevents the supplied air from flowing out of the case 3 and enables efficient heat exchange of the supplied air.

In the above description, the side surfaces of the upper plate 29a, lower plate 29b, and side plate 29c of the frame 29 are brought into contact with the inner surface of the case 3 via the airtight material 39. Side plate 2
The airtightness between the case 3 and the frame 29 may be maintained by bringing the side surface of the case 9c into direct contact with the inner surface of the case 3.

[Effects of the invention] Therefore, the present invention provides a vehicle in which the heat exchanger can be installed in close contact with the inside of the case, preventing damage to the heat exchanger due to vibrations of the vehicle and improving heat exchange efficiency. It is possible to provide a mounting structure for a heat exchanger in an air conditioner.

[Brief explanation of drawings]

FIG. 1 is a perspective view schematically showing the case of the vehicle air conditioner according to the present invention, and FIG. 2 is A of FIG. 1.
- A sectional view taken along line A, Figure 3 is a partially broken sectional view taken along line B-B in Figure 1, Figure 4 is a partially broken sectional view taken along line C-C in Figure 1, and Figure 5 is a heat exchanger for cooling. A partially cutaway perspective view of the vessel; FIG. 6 is a side view in the direction of arrow A shown in FIG. 5;
FIG. 7 is a plan view of FIG. 5, and FIG. 8 is a sectional view showing how the heat exchanger is attached to the case. In the figure, 1 is a vehicle air conditioner, 3 is a case, 5 is a connection port, 7, 9, 11 are air outlets, 13 is a first assembly hole, 15, 17 is a support part, 29 is a frame, 29
a is an upper plate, and 29b is a lower plate.

Claims (1)

[Scope of Claim for Utility Model Registration] A vehicle air conditioner in which a heat exchanger can be mounted in a cassette manner through a built-in hole formed in a case that exchanges heat with air supplied from a connection port and discharges it from an air outlet. The upper and lower plates of the case corresponding to the installation holes are formed with tapered support parts that gradually become narrower toward the back and lower the height inside the case, and are inserted through the installation holes. The frame of the heat exchanger is formed into a wedge shape corresponding to the support part of the case, and when the heat exchanger is inserted into the case from the installation hole along the support part, each side of the frame of the heat exchanger A mounting structure for a heat exchanger, wherein the heat exchanger can be brought into contact with the inner surface of the case.