JPS6315097A - Fitting device for heat exchanger of dual pipe type - Google Patents

Abstract

PURPOSE:To make the connecting work of a feed and discharge pipe to the refrigerant pipe of an air conditioner easy, by using a fitting stay having a looped holding part to hold outer pipes. CONSTITUTION:The outer pipes 2 are held by the holding part 6a of a fitting stay, and they are firmly fixed to the fitting stay 6 by a bolt 8 for fitting of outer pipes. Then a heat exchanger of dual pipe type is firmly fixed on the bottom plate 1 of an air conditioner by the intermediary of a fitting stay 6, by piercing a bolt 9 through the fitting hole 6b of a fitting stay to be screwed up. Because the title heat exchanger is in such an integral structure in which the outer pipes 2 can be fixed firmly that the accuracy in sizes of inner pipes 5 and refrigerant pipes 4 is increased, and the connecting work of a feed and discharge pipe 7 to the refrigerant pipe of an air conditioner can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a water-cooled heat exchanger in an air conditioner, which is a double-tube heat exchanger that circulates cooling water through one side and refrigerant through the other side to perform heat exchange. The present invention relates to a mounting device.

BACKGROUND OF THE INVENTION Conventionally, double-tube heat exchangers have been widely used in air conditioners for the purpose of saving energy.

A conventional mounting device for a double-tube heat exchanger as described above will be described below with reference to the drawings.

FIG. 4 shows a conventional mounting device for a double-tube heat exchanger. 1 is the bottom plate of the air conditioner, and is a plate to which the double-pipe heat exchanger is attached. 2 is the outer tube, and inside this is the inner tube 6.
It is also wound in a spiral.

3 is a three-way connecting pipe, with outer pipe 2. Inner tube6. It is connected to the refrigerant pipe 4. The refrigerant pipe 4 is connected to the three-way connecting pipe 3 and the refrigerant pipe (not shown) of the air conditioner. 5 is an inner pipe through which water flows, and is connected to the three-way connecting pipe 3 and the water supply and drainage pipe γ. 7
is a water supply and drainage pipe, which is connected to the inner pipe 5 and supplies and drains water flowing through the inner pipe 6. 9 connects the mounting stay 10 and the bottom plate of the air conditioner with bolts. Reference numeral 10 denotes a mounting stay, which connects the outer tube 2 and the bottom plate 1 of the air conditioner with bolts 9 to fix the double-pipe heat exchanger. Reference numeral 11 denotes a band for bundling the outer tubes 2 so that no gaps are left.

A mounting device for a double pipe heat exchanger configured as above will be explained. First, a method for manufacturing a double tube heat exchanger will be explained. A chi 1Q is inserted into the outer tube 2 and its inside into a gap at the lowest part of the outer tube 2, and caulked with a band 11 so that the gap caused by the springback of the spirally wound outer tube 2 is eliminated.

The double pipe heat exchanger manufactured by the above method is attached to the bottom plate 1 of the air conditioner with bolts 9 etc. via the mounting stay 10, and the inner pipe 6 through which water flows inside is connected to the water supply and drainage pipe 7. , the refrigerant pipe 4 was connected to the refrigerant pipe of the air conditioner.

Problems to be Solved by the Invention However, in the fixing method as described above, the mounting stay 10 is inserted between the outer tubes 2 and the entire outer tube 6 is fixed by the band 11. Band 1 has to be tightened quite tightly to secure it.
There are problems in that the degree of tightening of item 1 tends to fluctuate and the mounting stay 10 is not securely fixed and is likely to move. Also, the dimensional accuracy of the inner pipe 6 and the refrigerant pipe 4 is difficult to obtain, and the water supply and drainage pipe 7 and the refrigerant pipe of the air conditioner ( However, there was a problem in that it became impossible to connect to the device (not shown).

In view of the above-mentioned problems, the present invention has been developed to provide a double-layered structure that can securely fix the mounting stay, improve the dimensional accuracy of the inner pipe and the refrigerant pipe, and facilitate connection with the water supply and drainage pipe and the refrigerant pipe of the air conditioner. This provides a mounting structure for a tubular heat exchanger.

Means for Solving the Problems In order to achieve this object, the mounting device for a double pipe heat exchanger of the present invention includes a loop-shaped holding device for holding the outer pipe portion of a double pipe heat exchanger. The heat exchanger is configured to be mounted using a mounting stay having a section.

Function: With this configuration, the outer tube portion of the double tube heat exchanger is held by the loop-shaped holding portion of the mounting stay itself, and is securely fixed.

EXAMPLE An example of the present invention will be described below with reference to the drawings. FIG. 1 shows a mounting device for a double pipe heat exchanger according to an embodiment of the present invention, FIG. 2 shows a front view of the mounting stay, and FIG. 3 shows a left side view of the mounting stay. It should be noted that the same parts as in the conventional example are denoted by the same reference numerals and detailed explanations will be omitted.

Reference numeral 6 denotes a mounting stay that holds the outer tube 2 so that no gap is left, and connects and fixes the double-pipe heat exchanger and the bottom plate 1 of the air conditioner with bolts 9 or the like. Reference numeral 6a denotes a mounting stay holding portion which is formed in a loop shape and holds the outer tube portion of the double tube heat exchanger. 6b is a mounting stay fixing hole, which is a hole through which the port 9 passes. Reference numeral 8 denotes an outer tube fixing bolt, which securely fixes the mounting stay 6 and the outer tube 2.

A mounting device for a double pipe heat exchanger configured as above will be explained. Outer tube 2 and inner tube 5 spirally wound
In this case, a gap is created between the top and bottom of the outer tube 5 due to springback, but in order to eliminate this gap and determine the position of the inner tube 5 and refrigerant tube 4, the outer tube is held for 5 minutes by the mounting stay holding part 6a. The outer tube 5 and the mounting stay 6 are securely fixed with the outer tube fixing port 8. Further, by passing the bolts 9 through the mounting stay fixing holes 6b and tightening them, the double pipe heat exchanger is securely fixed to the bottom plate 1 of the air conditioner via the mounting stays 6.

As described above, according to this embodiment, the mounting stay 6 of the double-pipe heat exchanger serves as both the outer pipe 5 holding group of the double-pipe heat exchanger and the air conditioner bottom plate mounting part. 4. As a result, the dimensional accuracy of the mounting stay 6 has been improved, and the double-tube heat exchanger can be easily installed on the air conditioner bottom plate 1. In addition, there is no need to caulk with a band as in the conventional case, and the outer tube part Since the inner pipe 6 and the refrigerant pipe 4 have an integral structure that can be securely fixed, the dimensional accuracy of the inner pipe 6 and the refrigerant pipe 4 is improved, and connection with the water supply and drainage pipe 7 and the refrigerant pipe (not shown) of the air conditioner is facilitated. Furthermore, the number of parts is reduced from 2 to 1, reducing the number of man-hours.

In this case, a double-tube heat exchanger has been described, but the invention can also be applied to a multi-tube heat exchanger.

Effects of the Invention As described above, the present invention is such that the double-tube heat exchanger is attached to a stay having a loop-shaped holding part that holds the outer tube part of the double-tube heat exchanger. This improves the dimensional accuracy of the mounting stay, making it easier to install the double-tube heat exchanger on the bottom plate of the air conditioner, and eliminating the need for caulking with a band as in conventional methods, making it possible to securely secure the outer tube. Since it has an integral structure that can be fixed, the dimensional accuracy of the inner pipe and refrigerant pipe is improved.
Connection with water supply and drainage pipes and air conditioner refrigerant piping is also facilitated. Furthermore, the number of parts has been reduced from 2 to 1, reducing man-hours.
Its practical effects are significant.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a double pipe heat exchanger mounting device in an embodiment of the present invention, Fig. 2 is a front view of a mounting stay in an embodiment of the invention, and Fig. 3 is a left side of the mounting stay. The plan view and FIG. 4 are perspective views of a conventional double-tube heat exchanger mounting device. 2...Outer pipe, 6...Inner pipe, 6...
...Mounting stay, 6a...Loop-shaped holding part. Name of agent: Patent attorney Toshio Nakao and 1 other person
2 Figure 3 Zuno

Claims (1)

[Claims] A loop-shaped heat exchanger that holds the outer tube portion of a double tube heat exchanger, which is composed of a spirally wound outer tube and an inner tube arranged within the outer tube with a predetermined interval between the inner wall of the outer tube and the outer tube. A mounting device for a double pipe heat exchanger, wherein the double pipe heat exchanger is mounted using a mounting stay having a holding part.