JPH0245792B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a structure of a heat exchanger that facilitates the manufacture of a solar water heater having a loop-type heat pipe.

Configuration of conventional example and its problems As shown in Fig. 1, this kind of conventional loop heat pipe type solar water heater has a heat collector 1 that evaporates the working fluid of the latent heat medium, and an upper part of the heat collector. The condensing heat exchanger 3 installed inside the hot water storage tank 2 located at The heat exchanger 3 is formed into a loop shape by, for example, as shown in FIG. It was arranged in a V-shape on the internal bottom of the hot water storage tank 2 at a slope.

However, in order to insert such a V-shaped heat exchanger 3 into the hot water storage tank 2, an opening 8 large enough to insert the heat exchanger 3 separated by the coupling ring 5 and the coupling ring 7 must be inserted into the hot water storage tank 2. It is necessary to install the heat exchanger 3 at the top of the opening, or change the shape so that it can be inserted into a small opening.Increasing the opening has problems in terms of cost and heat retention performance, so it is necessary to deform the heat exchanger 3. This was problematic in terms of production and quality.

Purpose of the invention The present invention solves such conventional problems,
The purpose of the present invention is to provide a loop type heat pipe type solar water heater that is easy to manufacture without enlarging the opening.

Structure of the Invention In order to achieve this object, the present invention provides both ends of a heat exchanger that are disposed close to each other, connected by a bypass pipe, and arranged with both ends facing down to form an upward slope. . With this configuration, the working fluid condensed and liquefied inside the heat exchanger naturally flows down either directly or through the bypass pipe, ensuring the same heat transfer performance and making it easier to insert the heat exchanger. It also has the effect of making the opening of the hot water tank smaller.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 3, reference numeral 9 denotes a condensing heat exchanger disposed on the internal bottom surface of the hot water storage tank 2. Both ends of the condensing heat exchanger are placed close to each other, connected by a bypass pipe 10, and both ends are placed downward. It is arranged so that it has an upward slope. In the figure, the same members as in FIG. 1 are given the same numbers.

In the above configuration, the vapor of the working fluid boiled and evaporated in the heat collector 1 rises and passes through the outgoing pipe 4, and the working fluid that is condensed and liquefied in the upper half of the condensing heat exchanger 9 flows down by gravity. It passes through the bypass pipe 10 and the return pipe 6 and returns to the heat collector 1 . Further, the working fluid condensed and liquefied in the lower half of the heat exchanger 9 flows down by gravity and returns to the heat collector 1 through the return pipe 6. Therefore,
Although the flow direction for condensation is separated into two directions instead of one direction as in the past, the amount of heat transferred is the same, and the heat exchanger remains in the same shape, with the opening of the heat storage tank Since it can be easily inserted without increasing the size, manufacturing is easy and performance and quality can be improved.

Effects of the Invention As described above, the loop heat pipe type solar water heater of the present invention provides the following effects.

(1) Since the heat exchanger is shaped so that it can be inserted into even a small opening, there is no need to enlarge the opening, and it can be made superior in terms of cost and heat retention performance.

(2) Since the heat exchanger can be inserted without deforming it, manufacturing is easy and the quality can be excellent.

(3) Since the inclination angle of the heat exchanger can be increased, the required installation inclination angle of the solar water heater can be lowered.

(4) Since the length of the outgoing pipe can be reduced, it is easier to take out the outgoing pipe from the front of the hot water storage tank.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a conventional loop-type heat pipe solar water heater, FIG. 2 is a partially cutaway perspective view of the hot water tank shown in FIG. 1, and FIG. 3 is a loop-type heat pipe according to an embodiment of the present invention. FIG. 2 is a sectional view of a solar water heater. 1... Heat collector, 2... Hot water storage tank, 4... Outgoing pipe, 6
... Return pipe, 9 ... Heat exchanger, 10 ... Bypass pipe.

Claims (1)

[Claims] 1. A heat collector that evaporates the working fluid of the latent heat medium, a hot water storage tank located above the heat collector, a condensing heat exchanger disposed on the internal bottom of the hot water storage tank, and a heat collector for the heat collector. It consists of an outgoing pipe that connects the upper part and one end of the heat exchanger, and a return pipe that connects the other end of the heat exchanger and the lower part of the heat collector, and connects the vicinity of both ends of the heat exchanger. The solar water heater is provided with a bypass pipe, and the heat exchanger is provided with both ends close to each other, and is arranged with both ends facing down to form an upward slope.