JPS59134487A - Heat exchanger - Google Patents

Abstract

PURPOSE:To inexpensively manufacture a heat exchanger capable of exchanging heat between a heat-transmitting medium and a gas and between the medium and a liquid, by providing a medium-liquid heat-exchanging part having a double-pipe construction formed in a rectilinear part and a medium-gas heat- exchanging part comprising a heat-transmitting medium circulating pipe fitted with heat-radiating fins. CONSTITUTION:When exchanging heat between the heat-transmitting medium and a gas, the medium is passed through the circulating pipe 7 for the medium, exchanges heat with the gas at the medium-gas heat-exchanging part 10 provided with the heat-radiating fins 2, and is discharged from the part 10. On the other hand, when exchanging heat between the medium and a liquid, the medium is passed through the circulating pipe 7, and exchanges heat with the liquid at the medium-liquid heat-exchanging part 9 having the double-pipe construction constituted of the pipe 7 and a liquid-circulating pipe 8. Since the double-pipe construction is provided in a rectilinear form, the heat exchanger can be manufactured inexpensively.

Description

[Detailed description of the invention] 〔Technical field〕 This invention relates to a heat exchanger.

[Background technology]

A heat exchanger that exchanges heat between a heat medium such as fluorocarbon gas and a gas (such as FC air) is constructed by attaching heat radiation fins 2 to a heat medium circulation pipe l as shown in FIG. I was having a fever exchange.

On the other hand, in a heat exchanger that exchanges heat between a heat medium and a liquid (for example, water), a heat medium circulation pipe 1 is attached to a liquid transfer pipe 3 as shown in FIG. The amount of heat in the heat medium is transferred to the liquid and heat exchange takes place.

Conventionally, no heat exchanger has been known that has both heat exchange functions between a heat medium and a gas and between a heat medium and a liquid.

However, if the heat exchangers shown in FIGS. 1 and 2 are combined to form a heat exchanger having these functions, the result will be as shown in FIG. 4. This is a double tube 6 consisting of an inner tube 4 for liquid transfer and an outer tube 5 for heat medium circulation, with heat radiating fins 2 provided. As shown in the figure, the transfer of the liquid in the inner v4 is stopped, and only the heat medium is circulated to exchange heat with the gas via the outer tube 5 and the heat radiation fins 2. To exchange heat with the liquid, the liquid is transferred (circulated) as shown in FIG. 6, and heat is exchanged with the heat medium circulating in the same direction through the walls of the inner tube 4.

However, in such a heat exchanger, it is very difficult to connect the straight double pipe 6a and the U-shaped double pipe 6b, as shown in FIG. Because each 2 to connect
This is because it is necessary to braze the inner tube 4 and outer tube 5 of the heavy tubes 6a and 6b, respectively. Therefore, even if connection was possible, it would have to be a boring doorknob. .

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat exchanger that can efficiently exchange heat between a heat medium, a gas-based heat medium, and a liquid, and can be manufactured at low cost.

[Disclosure of the invention]

The heat exchanger of the present invention has a double tube structure in which one of the heat medium circulation pipe and the liquid transfer pipe is inserted into the @ line part between the bent parts of the other pipe. The heat exchanger includes a liquid heat exchange section and a heat medium-gas heat exchange section in which heat radiation fins are attached to the heat medium circulation/squive.

In this way, heat exchange between the heat medium and gas and between the heat medium and liquid can be performed with one heat exchanger, so for example, this heat exchanger can be attached to the fan coil unit of an air conditioner, In addition to exchanging heat with the air and providing cold air, it also exchanges heat with water during the winter and can be used for hot water floor heating. Furthermore, since the double pipes are constructed in a straight line, there is no connection between the double pipes, so they can be manufactured at low cost.

Embodiment One embodiment of the present invention will be explained based on FIG. 8.
In the figure, 7 is a heat medium circulation pipe, 8 is a liquid circulation pipe, and 2 is a heat radiation fin. The heat medium circulation pipe 7 forms a heat medium-liquid heat exchange section 9 having a double pipe structure with an internal opening in a straight line between the bent portions of the liquid imitation vibrator 8 . Further, a large number of heat radiation fins 2 are attached to the heat medium circulation pipe 7 coming out from the liquid circulation pipe 8, forming a heat medium-gas heat exchange section 10. In this embodiment, the heat medium circulation pipe 7 includes heat exchange sections 9, 1 between heat medium and liquid and between heat medium and gas.
The 0's are arranged in series.

When performing heat exchange between a heat medium and a gas, the heat medium passes through the heat medium circulation pipe 7 and exchanges heat with the gas in the heat medium-gas heat exchange section 10 provided with heat radiation fins 2. Exit part 10. At this time, heat is exchanged with the liquid in the double tube, but since the liquid is not circulated, the heat transferred to the liquid is 2
Since heat is exchanged with the outside gas through the outer pipe of the heavy pipe, there is almost no heat loss (however, due to the heat capacity of the liquid, the rise time of heat exchange is slightly delayed).

On the other hand, when heat exchange is performed between the heat medium and the liquid, the heat medium passes through the heat medium circulation pipe 7 , exchanges heat with the liquid in the double pipe, and exits the heat exchange section 9 . At this time, since the liquid is being circulated, the amount of heat exchange within the double tube becomes extremely large. Further, heat is exchanged with the gas in the heat medium-gas heat exchange section 10, but since the fan (not shown) is stopped, the heat exchange rate at that portion is low and there is little heat loss.

FIGS. 9 to 11 show other embodiments of the invention, respectively. That is, the heat exchanger shown in FIG. 9 has both exchange sections 9 and 10 arranged side by side in a U-shape by a heat medium circulation pipe 7'. In addition, the 101iid is a heat medium -
In the liquid-to-liquid heat exchange section, the heat medium circulation pipe 11 is used as an outer tube, and the liquid circulation pipe 12 is used as an inner tube, and the heat medium circulation pipe 11 is connected to both exchange sections 9. IO'e
They are arranged in parallel. Furthermore, Figure 11 shows the 10th
Similarly to the figure, the heat medium circulation pipe 11' serves as an outer pipe, and the liquid circulation pipe 12' serves as an inner pipe.
Both exchange parts 9. 1O are arranged in series. The rest is the same as the previous embodiment.

Figure 12 shows a fan coil unit for an air conditioner equipped with the heat exchanger shown in these embodiments. Heating is performed by a hot water floor heating system 14 connected at .12.

The heat exchanger shown in each embodiment can be easily incorporated into an existing air conditioner/fan coil unit.

〔Effect of the invention〕

According to this invention, it is possible to efficiently exchange heat between a heat medium and a gas and between a heat medium and a liquid with a single heat exchanger, and it can be installed in an air conditioner fan coil unit for cooling and hot water floors. It can be used for heating etc. Furthermore, 2
Since the multi-pipe structure is configured in a straight line, there is no connection between 2fi pipes, which makes it easy to manufacture and can be manufactured at low cost.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional heat medium-gas heat exchanger;
The figure is a perspective view of a conventional heat exchanger for a heat medium and a liquid, FIG. A perspective view of a heat exchanger that combines the devices shown in Figures 1 and 2, Figures 5 and 6 are sectional views showing its operation, and Figure 7 is the second part.
A perspective view showing a method of connecting the heavy pipe phase A; FIG. 8 is a perspective view of one embodiment of the present invention; FIGS. 9, 10, and 11 are perspective views of other embodiments of the invention, respectively; FIG. 12 is a perspective view of one example of its use. 1.7.11... Heat medium circulation pipe, 8,12...
Liquid circulation pipe (liquid transfer pipe), 9... Heat medium-liquid heat exchange section, 10... Heat medium-gas heat exchange Figure 10 1n Figure 12 Procedure amendment document) January 7, 1982 1981 Patent Application No. 008192 2, Name of the invention Heat exchanger 3, Person making the amendment Relationship to the case Applicant 4, Agent 5, Date of amendment order Voluntary amendment tl) Description page 3, No. 19- 20 lines, page 6, number 10
In lines 19 and 20 of page 6, the words ``fan coil unit'' have been corrected to read ``one-room unit.'' (2) Figure 9 of the drawings is corrected as shown in the attached sheet.

Claims (1)

[Claims] A heat medium-liquid heat exchange section having a double pipe structure in which one of a heat medium circulation pipe and a liquid transfer pipe is inserted into a straight part between the V-bent part and the bend part of the other pipe, and the heat medium circulation part. A heat exchanger equipped with a heat medium-gas heat exchange section in which a heat radiation fin is attached to a pipe.