JPH0289933A - Heat exchanger holding device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a heat exchanger holding device for fixing a heat exchanger built into a case of an air conditioner, a refrigerator, a refrigerated showcase, etc. It is.

[Conventional technology]

Figures 2 and 3 A and B are from Utility Model Publication No. 63-05742.
FIG. 1 is an exploded perspective view and a partially enlarged perspective view of a conventional air conditioner heat exchanger holding device proposed by the applicant described in No. 1. In Figures 2 and 3 A and H,
Reference numeral 1 designates an air conditioner case, in which a heat exchanger 2 is disposed, and an electrical component box 1a in which electrical components for operation control are stored on the right side is integrally formed with the case 1. There is. Reference numeral 3 denotes a holding portion protruding from the front side of the left side of the case 1, and this holding portion 3 is for holding the U-shaped bent portion 2b of the refrigerant pipe protruding from the end plate 2a of the left side of the heat exchanger 2. It is. Reference numeral 4 denotes a hook having a cross-sectional shape protruding to the right from the front surface of the wall 1b provided on the upper left side of the electrical component box 1a of the case 1, and 5 protruding from the end plate 2a of the right side of the heat exchanger 2. This is a heat exchanger fixture that also serves as a dew scattering prevention fixture and has a concave cross section so as to enclose the U-shaped bent portion 2b of the refrigerant pipe. A rib 5a projecting forward is provided on the holder, and the rib 5 is configured to be engaged with the hook 4. Note that 6 is a presser for preventing the heat exchanger fixture 5 from escaping, and the presser 6 has a cross-sectional shape.

Next, how to assemble the heat exchanger holding device for this air conditioner.
[Explain about. First, insert the U-shaped bent portion 2b of the refrigerant pipe on the left side of the heat exchanger 2 into the holding portion 3 of the case 1 so that it is engaged and held there. Next, the U-shaped bent portion 2b of the refrigerant pipe on the right side of the heat exchanger 2 is wrapped with the heat exchanger fixture 5. In this state, the fixture 5 is pressed against the wall 1b and the right end plate 2a of the heat exchanger 2, and the rib 5a of the fixture 5 is engaged with the hook 4 of the case 1. Fix the part to case 1. Further, a presser 6 is inserted between the fixture 5 and the electrical component box 1a to prevent the fixture 5 from escaping to the right, thereby completing the assembly of the heat exchanger holding device.

Note that FIG. 4 shows a modification of the heat exchanger fixture 5 made of a metal plate formed by bending ribs 5a at multiple locations in the vertical direction, and even if this heat exchanger fixture 5 is used, , 3rd
Fix the right side of the heat exchanger to the case in the same way as shown in Figures A and B.

[Problem to be solved by the invention]

A conventional heat exchanger holding device is configured as described above,
In addition to the heat exchanger fixing tool, a holding tool is required, which increases the number of parts, which increases the number of assembly steps and increases the overall cost. Since the heat exchanger fixture only holds the U-shaped bent portion of the refrigerant pipe, there is a problem in that the vertical holding of the heat exchanger by the heat exchanger fixture becomes uncertain.

This invention was made to solve the above-mentioned problems, and it reduces the number of parts and assembly work to reduce costs, and also securely holds the heat exchanger with a fixing device. The purpose of the present invention is to obtain a holding device for a heat exchanger that can be used as a heat exchanger.

[Comprehensive means to solve problems]

The heat exchanger holding device according to the present invention includes a fixture that surrounds a U-shaped bent portion of a refrigerant pipe that projects from an end of a heat exchanger.
It is formed by a locking pawl that fits into a window hole in the wall near the end of the heat exchanger of the case that houses the heat exchanger and is locked around the window hole, and a U-shaped bent part of the refrigerant pipe of the heat exchanger. A holding protrusion that fits into the hole from the opposite side of the window hole is provided.

[Effect]

The heat exchanger holding device according to the present invention locks the locking claw provided on the fixture to the peripheral part of the window hole provided in the wall near the end of the heat exchanger of the case containing the heat exchanger. Since the fixing device is locked to the case, the fixing device will not escape to the right even if the pressing station is abolished. Therefore, by not using the pressing stationery, the number of parts can be reduced and the assembly work can be reduced. The number of man-hours can be reduced. In addition, by fitting the holding protrusion provided on the fixing device into the hole formed by the U-shaped bent portion of the refrigerant pipe from the side opposite to the window hole, the heat exchanger and the fixing device are prevented from shifting in the vertical direction. The heat exchanger can therefore be held securely by the fixture.

〔Example〕

An embodiment of the present invention will be described below with reference to gX1 diagrams A and B.

In FIGS. 1A and B, 1b is a case housing a heat exchanger, for example, a wall that is one end of an air conditioner housing, 2 is a heat exchanger, 2a is an end plate, and 2b is a U-shaped refrigerant pipe. Music section, 5
is a heat exchanger fixture that also serves to prevent dew from scattering. Reference numeral 7 designates window holes provided at a plurality of locations in the vertical direction of the front end of the wall 1b, and a projecting piece 8 is formed on the rear side of the window hole 7 to protrude at right angles to the wall 1b. Reference numeral 9 designates U-shaped curved portions of the refrigerant pipe that protrude at multiple locations in the vertical direction from the inner surface of the front piece 5a of the fixture 5, which is formed into a mouth shape by connecting the front piece 5a and the rear piece 5b with a bottom piece 5d. A holding projection 10 is fitted into a hole 2C formed by the end plate 2a and the rear piece 5 of the fixture 5.
It is a locking pawl that protrudes parallel to the front piece 5B from the tip side of a bent part bent rearward at right angles from the opening end of the opening part b, enters the window hole 7 IK, and is locked to the protruding piece 8. The retaining claws 10 are arranged at positions facing the window holes 7, respectively. The configuration of this embodiment other than the above is the same as the conventional one shown in FIGS. 2 and 3 A and B, but in this embodiment, the holding tool to prevent the fixture from escaping is eliminated. There is.

Next, a procedure for assembling the heat exchanger holding device according to the embodiment configured as described above will be explained.

First, heat exchange v! The left side of j2 is fixed to the left side of the case by means similar to conventional ones.

Next, the fixing tool is inserted into the hole 2C formed by the end plate 2a on the right side of the heat exchanger 2 and the U-shaped bent part 2b of the refrigerant pipe protruding from the end plate 2a from the side opposite to the window hole 7. 5 are fitted, and the U-shaped bent portion 2b is held by the fixture 5 by these projections 9.

Further, the locking claw 10 of the fixture 5 is fitted into the window hole 7 provided in the wall 1b of the case and is locked to the protruding piece 8, the fixture 5 is held by the locking claw 10, and the fixture 5 is held by the fixture 5. heat exchanger 2
Complete the assembly of the heat exchanger holding device by fixing the right side of the heat exchanger to the case.

In this assembled state, the fixture 5 prevents dew adhering to the U-shaped bent portion 2b of the refrigerant pipe protruding to the right side of the heat exchanger 2 from scattering. For example, if an electrical parts box is provided on the right side of the heat exchanger 2 as shown in FIG. 2 of the conventional example, the fixture 5 can prevent dew from scattering on the electrical parts box. . As shown in FIG. 1B, the fixture 5 surrounds the U-shaped bent part 2b of the refrigerant pipe, and the left end of the front piece 5a of the fixture 5 and the bent part 5C are connected to the right end plate 2a of the heat exchanger 2. The heat exchanger 2 is prevented from moving in the left-right direction by being in contact with the heat exchanger 2 .

Further, the inner surface of the front piece 5a is a U-shaped bent portion 2b of a refrigerant pipe.
The heat exchanger 2 is prevented from moving back and forth by the locking pawl 10 locking around the window hole 7 of the wall 1b. Further, the holding protrusion 9 is attached to the U-shaped bent portion 2b of the refrigerant pipe.
By fitting into the hole 2C formed by the end plate 2a and the end plate 2a, the heat exchanger 2 is also prevented from moving in the vertical direction.

Incidentally, in an air conditioner, the heat exchanger holding device of the present invention can be provided on both sides of the heat exchanger since the refrigerant pipe has the tJ-shaped curved portions on both sides.

Furthermore, the heat exchanger holding device of the present invention can be used not only in air conditioners but also in devices that use a heat exchanger such as a refrigerator with two refrigerated case cases. If there is a U-shaped bend and there is a wall near it, it can be adopted.

〔Effect of the invention〕

As explained above, according to the present invention, the holding protrusion and the locking pawl are each integrally provided in the heat exchanger fixing device that also serves to prevent scattering of dew, and the locking pawl is connected to the window hole provided in the wall of the case. Since the fixing tool is locked to the case by locking it to the periphery, the fixing tool will not escape to the right even if the holding tool is abolished. It is possible to complete the assembly in a short time by reducing the number of parts and the number of assembly work steps, and as a result, it is possible to achieve a significant cost reduction. In addition, the holding protrusion provided on the fixture was fitted into the hole formed by the U-shaped bend of the refrigerant pipe, and the heat exchanger was held in the fixture so that it would not shift in the vertical direction. This has the effect that the exchanger can be held securely.

[Brief explanation of the drawing]

1A and 1B are an exploded rear perspective view of essential parts and a horizontal sectional view of the assembled state showing a heat exchanger holding device according to an embodiment of the present invention, and FIG. 2 is a conventional air conditioner heat exchanger. 3rd prisoner and B are partially enlarged views of Figure 2 and a horizontal cross-sectional view of the main parts in the assembled state. Figure 4 is a conventional heat exchanger fixing device that also serves to prevent scattering of dew. It is a perspective view showing a modification. 1 Air conditioner case, 1a Electrical parts box, 1b Wall, 2 Heat exchanger, 2a End plate, 2b Refrigerant pipe U
character-shaped curved part, 2c hole, 5 N scattering prevention heat exchanger fixture, 7 window hole, 8 projection piece, 9 holding protrusion, 10 locking claw. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A window hole is formed in the wall of the case containing the heat exchanger near the end of the heat exchanger, and is also used to prevent the scattering of dew that surrounds the U-shaped bent part of the refrigerant pipe that protrudes from the end of the heat exchanger. It has a heat exchanger fixing device, and the fixing device includes a holding protrusion that fits into the hole formed by the U-shaped bent portion from the side opposite to the window hole and is held by the U-shaped bent portion. A holding device for a heat exchanger, comprising a locking pawl that fits into the window hole of the wall and is locked around the window hole.