JPH0599494A - Heat-storing heat pipe type hot-water supplier - Google Patents

Abstract

PURPOSE:To introduce the title apparatus which is good in the performance of the vaporizing part and can be made available at low cost. CONSTITUTION:A vaporizing part 20 has as its components joined tightly in a multilayer structure and making up one integral body: vaporizing blocks 21 containing built-in tubes which constitute a part of a heat pipe; heater blocks 22 which contain built-in electric heaters 29; and heat-storing blocks 23. Therefore, for each of these blocks a material suited to the specific function can be selectively used and, as a result, the production cost can be lowered, compactness in structure and lightness in weight can be promoted, and the durability can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to hot water supply equipment of the type in which the heat of a heat storage body is applied to water through a heat pipe to obtain hot water.

[0002]

2. Description of the Related Art For example, as a relatively small-scale hot water supply facility for household use, a type having a hot water boiler, a type having a hot water storage tank, a type of heating water by heat stored in a heat storage body, etc. It has been known. Of these, the type equipped with a hot water boiler increases the size of the equipment as a whole, so for small-capacity hot water supply equipment such as private homes,
There is an inconvenience that the equipment cost (initial cost) becomes high. In addition, the type with a hot water storage tank can use relatively cheap energy such as late-night power, so the operating cost (running cost) can be reduced, but on the other hand, a large hot water storage tank is installed. Therefore, there is an inconvenience of being limited in space.

On the other hand, in the type of equipment for heating water by the thermal energy stored in the heat storage body, not only relatively inexpensive energy such as late-night power can be used, but also the equipment can be downsized. There are various advantages. However, when a heat storage body is used, there are demands such as a high degree of freedom in selecting the installation location, good thermal response, and long-term stability of heat storage characteristics. We have already developed and proposed a hot water supply system that can meet the above requirements.

The basic structure is schematically shown in FIG. 5, in which a heat storage body is provided in a portion of the loop type heat pipe 1 which is to be the evaporation section 2 and a portion of the loop type heat pipe 1 is to be in the condensation section 4. The heat exchanger 5 for heating the water W is provided. That is, the evaporation unit 2 connects the upper header pipe 6 and the lower header pipe 7 by a large number of evaporation pipes 8 provided between them, and these are provided inside the metal block 3 to form a block shape. A heat storage body is provided outside the heater and a heater 9 for heating the heat storage body is provided. The heat exchanger 5 is, for example, the meandering tube 1
The structure is such that heat is exchanged by flowing water around the outer circumference of 0, the inflow port of the meandering pipe 10 and the upper header pipe 6 are connected by a steam pipe 11, and the outflow port returns liquid to the lower header pipe 7. It is connected via a pipe 12 and a control valve 13.

Then, the non-condensable fluid such as air is exhausted inside the closed pipe line formed by the evaporation section 2, the steam pipe 11, the heat exchanger 5 and the liquid return pipe 12 to condense freon and the like. Fluid is enclosed as a working fluid,
A loop heat pipe is formed here.

[0006]

By the way, in the evaporating section 2 in the hot water supply facility described above, there are totally different effects such as the effect of heating by the heater 9 and the effect of heat storage and the effect of applying heat to the working fluid to evaporate. To do. Therefore, it is necessary to have a special structure in order to perform these actions without excess or deficiency, and further to achieve miniaturization and cost reduction, but in the past, it has been common to focus only on the heat storage performance. The reality is that no structure has been developed that fully satisfies the above-mentioned effects.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a heat storage type heat pipe type hot water supply equipment having an evaporation part capable of sufficiently performing a plurality of different kinds of operations. To do.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention encloses substantially only a condensable fluid as a working fluid inside a closed pipe, and partially seals the closed pipe.
In the heat storage type heat pipe type hot water supply equipment, the evaporation part is used as an evaporation part for receiving heat from a heat storage body, and the other part of the closed pipeline is a condensation part for obtaining hot water by exchanging heat with water. However, an evaporation block having a conduit that forms a part of the sealed tube therein, a heater block containing an electric heater, and a heat storage block made of a heat storage material are arranged in a laminated state so as to be in close contact and fastened together. It is characterized by the structure.

[0009]

In the hot water supply equipment of the present invention, the heat storage block is heated by energizing the electric heater to store heat therein,
At the same time, the evaporation block is heated. Inside the evaporation block, a part of the pipe for the heat pipe is provided,
The working fluid of the heat pipe evaporates inside the evaporating block, and after the vapor flows to the condensing section, heat is radiated there to heat the water to obtain hot water. The working fluid that has radiated heat and condensed returns to the inside of the evaporation block again. Since the evaporation block, the heater block, and the heat storage block are arranged in a laminated state and are in close contact with each other, the evaporation block is heated by the heat storage block after the heat is sufficiently stored in the heat storage block and the electric power to the electric heater is cut off. Therefore, since the evaporative block has its main function of heating the working fluid flowing inside, it uses a material with excellent airtightness such as metal lumps and high workability. Is formed of a material having a function of containing and protecting the electric heater. Furthermore, since the heat storage block has a main function of storing heat, it is formed of a material having characteristics such as large specific heat and light weight.

[0010]

[Embodiment] The hot water supply equipment according to the present invention is basically,
The heat pipe is configured to convey the heat stored in the heat storage body to the heat exchanger for hot water, which is the condensing section, to obtain hot water. Therefore, the piping system as a whole is the same as that shown in FIG. The hot water supply equipment of the present invention is characterized by its evaporation portion, and one example thereof is shown in FIGS. 1 and 2.

The evaporation unit 20 shown in these figures includes an evaporation block 21, a heater block 22, and a heat storage block 2.
3 and a protection block 24 as main components. That is, the evaporation block 21 has upper and lower header tubes 25, 26 as shown in FIG.
A plurality of evaporation pipes 27 are provided so as to communicate with each other, and these pipes are cast in a metal block 28 such as stainless steel to form a rectangular parallelepiped having a small thickness as a whole. By connecting the steam pipe 11 shown in FIG. 5 to the upper header pipe 25 and connecting the liquid return pipe 12 shown in FIG. 5 to the lower header pipe 26, the upper and lower header pipes 25 and 26 and the evaporation pipe 27 are connected. Part of the loop heat pipe is formed.

The heater block 22 is a steel block having a thickness smaller than that of the evaporation block 21, and as shown in a partially cutaway front view of FIG. Holds 29.

Further, the heat storage block 23 is formed by baking a non-metal heat storage material such as alumina into a rectangular parallelepiped shape. Further, the protection block 24 is arranged on the outer peripheral portion as described later, and is formed as a rectangular parallelepiped made of steel.

The evaporation unit 20 shown in FIGS. 1 and 2 is constructed by combining the above-mentioned blocks as described below. That is, each of the pair of evaporation blocks 21
They are sandwiched by heater blocks 22, and these assemblies are arranged in parallel, and a plurality of heat storage blocks 23 are arranged in a matrix between them, and these heat storage blocks 23 are connected to the evaporation block 21 and the heater block 22. The assembly with is sandwiched. The longitudinal direction of these heat storage blocks 23 (the left-right direction in FIG. 1)
Protective blocks 24 are arranged at both ends of each. Further outside of the assembly (upper and lower in FIG. 1)
A plurality of heat storage blocks 23 are arranged in the heat storage block 23, and protection blocks 24 are arranged at both ends of the heat storage block 23 in the longitudinal direction.

Each of the blocks combined as described above has a rectangular parallelepiped shape as a whole, and strip-shaped fixing plates 30 are arranged at two positions on the upper and lower sides of the outer periphery of the blocks. By mounting by means, the blocks are fastened and integrated so as to be in close contact with each other.

It is to be noted that a heat insulating coating may be applied to prevent unnecessary heat dissipation, and a plurality of evaporation sections 20 shown in FIGS. 1 and 2 may be connected to increase heat storage capacity.

Therefore, when the electric heater 29 is energized to generate heat, the heat storage block 23 is heated and raised to store heat as sensible heat, and the evaporation block 21 sandwiched by the heater blocks 22 is also heated. After heat storage, the evaporation block 21 is heated by the heat transferred from the heat storage block 23 via the heater block 22. As a result, the working fluid supplied to the pipeline in the evaporation block 21 evaporates and transports heat as its evaporation latent heat.

[0018]

As is apparent from the above description, in the hot water supply equipment of the present invention, since at least three kinds of blocks of the evaporation block, the heater block and the heat storage block are combined to constitute the evaporation part, a plurality of operations are performed. It is possible to select and use a material suitable for each function of the evaporation portion, and as a result, it is possible to reduce cost, reduce size and weight, and improve durability.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of an evaporation unit in a hot water supply facility of the present invention.

FIG. 2 is a side view of the evaporation section.

FIG. 3 is a partially cutaway front view of an evaporation block.

FIG. 4 is a partially cutaway front view of a heater block.

FIG. 5 is a schematic diagram for explaining a basic structure of a heat storage type heat pipe type hot water supply facility.

[Explanation of symbols]

20 ... Evaporation part, 21 ... Evaporation block, 22 ... Heater block, 23 ... Heat storage block, 25 ... Upper header pipe, 26 ... Lower header pipe, 27 ... Evaporation pipe, 29
… Electric heater.

Front Page Continuation (72) Inventor Yoshihide Sugita 1-3-3 Uchiyuki-cho, Chiyoda-ku, Tokyo Within Tokyo Electric Power Co., Inc. (72) Inventor Jun 1-3-1 Uchiyuki-cho, Chiyoda-ku, Tokyo Tokyo Electric Power Co. In-house (72) Inventor Shotaro Yoshida 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Densen Co., Ltd. (72) Inventor Masataka Mochizuki 1-5-1, Kiba, Koto-ku, Tokyo Fujikura Densen Co., Ltd. (72) Inventor Yuuji Saito, 1-5-1 Kiba, Koto-ku, Tokyo Inside Fujikura Electric Wire Co., Ltd.

Claims (1)

[Claims] 1. A hermetically sealed conduit is filled with substantially only a condensable fluid as a working fluid, and a part of the hermetically sealed conduit serves as an evaporation section for receiving heat from a heat storage body, and another of the hermetically sealed conduits. In a heat storage type heat pipe hot water supply equipment, a part of which is a condensing part for performing heat exchange with water to obtain hot water, wherein the evaporating part has an evaporating part having a pipe line forming a part of the sealed pipe therein. A heat storage type heat pipe type hot water supply facility having a structure in which a block, a heater block containing an electric heater, and a heat storage block made of a heat storage material are arranged in a laminated state so as to be closely adhered and fastened together.