JP2002310511A - Hot water storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water storage tank of a hot water storage type water heater such as an electric water heater and a heat pump water heater having a heat insulation structure of excellent in heat insulation performance and in demountability. SOLUTION: There are provided hot water storage can structures 4, 5 to which a plurality of pipelines 8, 9, 10, 11, and 12 are connected, an external casing structures 171, 172, 173, and 174 in which the foregoing hot water storage can structures 4, 5 are accommodated, and a plurality of molded heat insulation members 13, each of which has a recessed portion 14 with a configuration along external contours of the foregoing hot water storage can structures 4, 5 and which surround the external contours of the foregoing hot water storage can structures 4, 5 by bringing the can structure recessed section 14 into close contact with the foregoing hot water storage can structures 4, 5. There is further provided a piping groove portion 16 in surfaces of the plurality of the molded heat insulation members 131, 132, 133, 134, 135, and 136 in contact with each other for accommodating the pipelines 8, 9, 10, 11, and 12 connected to the foregoing hot water storage can structures 4, 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat insulating structure for a hot water storage tank of a hot water supply type water heater such as an electric water heater or a heap water heater.

[0002]

2. Description of the Related Art Conventionally, in a hot water storage tank of this type of hot water storage type hot water supply apparatus, hot water heated by an external heating means such as a heat pump is stored or hot water is stored by heating water with an internal electric heater. For the purpose of heat insulation and heat insulation of the can, for example, as disclosed in JP-A-7-243705, a planar heat insulating material such as glass wool is wound around the hot water can itself by a machine or manually.

[0003]

However, in the case where the heat insulating material is wound around the hot water storage can like this conventional one, a special equipment is required, or in the case of a large hot water storage can, the work is required to wind the heat insulating material. One person cannot work efficiently, it takes a lot of man-hours during manufacturing and assembly, and it is costly, and if the insulation is wound and fixed, the work of attaching and detaching the insulation when performing maintenance after installing the hot water storage tank There was a problem of poor sex.

Conventionally, in order to keep warm and insulate hot water or water pipes entering and exiting a hot water storage can body, a heat insulating material is directly wound around these pipes separately from the heat insulating material wound around the hot water can body. Therefore, there is a problem that man-hours are required for manufacturing and assembling, the cost is high, and the demounting workability during maintenance is poor.

[0005]

In order to solve the above-mentioned problems, according to the present invention, there is provided a hot-water storage can body to which a plurality of pipes are connected, an exterior body for accommodating the hot-water storage can body, A plurality of molded heat insulating materials that have a can body recess having a shape along the can body contour, and that closely contact the can body recess with the hot water storage can body and surround the hot water can body contour. It was taken.

[0006] Thus, at the time of manufacturing and assembling, simply by mounting the plurality of molded heat insulating materials so as to be fitted into appropriate positions, the concave portion for the molded heat insulating material comes into close contact with the outer periphery of the hot water storage can body, thereby keeping the hot water storage can body warm.・ Improved heat insulation and efficient work without man-hours for manufacturing and assembling, which can reduce costs, and also facilitates desorption work during maintenance and improves workability. is there.

According to a second aspect of the present invention, a pipe groove for accommodating a pipe connected to the hot water storage can is provided on surfaces of the plurality of molded heat insulating materials that are in contact with each other.

[0008] Accordingly, by simply mounting a plurality of molded heat insulating materials for keeping the heat storage and heat insulation of the hot water storage canister in an appropriate position, not only the heat storage and heat insulation of the hot water storage can but also the respective hot water storage cans are provided. The connected multiple pipes also fit into and fit into the pipe grooves provided on the surfaces of the multiple molded heat insulating materials that are in contact with each other, so that heat insulation and heat insulation are performed. Insulation
Heat insulation and heat insulation performance are improved by performing heat insulation, and desorption work is easy, workability is good, man-hours during manufacturing and assembly are reduced, and workability during maintenance is greatly improved. Can be significantly reduced.

According to a third aspect of the present invention, the plurality of molded heat insulators are divided into at least four parts: a bottom heat insulator, a top heat insulator, a front heat insulator, and a rear heat insulator.

[0010] Thereby, the gap between the vertical divided surfaces is closed with the bottom heat insulating material and the top heat insulating material to prevent heat radiation due to natural convection of the air due to the temperature difference, and to improve the heat insulation and heat insulation performance with good desorption workability and low cost. can do.

According to a fourth aspect of the present invention, the front heat insulating material comprises:
It is divided into a front upper heat insulating material and a front lower heat insulating material.

As a result, the maintainability can be further improved.

According to a fifth aspect of the present invention, the plurality of molded heat insulating materials are formed by molding heat-resistant expanded polystyrene.

Thus, even if high-temperature hot water is stored in the hot water storage body, the molded heat insulating material is not deformed and the desired heat retaining and heat insulating performance can be easily obtained at low cost.

[0015]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 is a hot water storage tank that stores hot water,
Reference numeral 2 denotes a heat pump type heater which stores hot water heated by the heater 2 in a hot water storage tank 1 and supplies hot water from a hot water tap 3 when a hot water supply is requested.

Next, the hot water storage tank 1 will be described with reference to an exploded perspective view of FIG.
Denotes a second hot water storage can, 6 denotes a first hot water support that supports the first hot water storage can 4, 7 denotes a second can support that supports the second hot water storage can 5, and 8 denotes a second hot water storage can 5 A water supply pipe connected to the lower part, 9 is a can body connecting pipe connecting the upper part of the first hot water storage body 4 and the lower part of the second hot water storage body 5, and 10 is connecting the upper part of the first hot water storage body 4 and the hot water tap 3. A hot water supply pipe, 11 is a heater forward pipe connecting the lower part of the second hot water storage can 5 and the inflow side of the heater 2, and 12 is a heater return pipe connecting the upper part of the first hot water storage can 4 and the outflow side of the heater 2 The water supplied from the water supply pipe 8 and stored in the first hot water storage can 4 and the second hot water storage can 5 is driven by a circulating pump (not shown) to supply a heater to the lower portion of the second hot water storage can 5. Heater 2 flowing through tube 11
After being heated to a high temperature, the hot water flows through the heater return pipe 12 and is gradually stored from the upper portion of the first hot water storage body 4, and when the hot water tap 3 is opened, the first hot water storage body 4 The hot water stored in the upper part is the hot water supply pipe 10 in the upper part of the first hot water storage body 4.
And hot water is supplied from the hot water tap 3.

13 is a first hot water storage can 4 and a second hot water storage can 5
A plurality of molded heat insulating materials made of heat-resistant expanded polystyrene that covers and heats and insulates substantially the entire outer surface of the outer shell, and includes a bottom heat insulating material 131, a front lower heat insulating material 132, and a front upper left heat insulating material 13.
3, divided into a front upper right heat insulating material 134, a rear heat insulating material 135, and a top heat insulating material 136;
And a portion in contact with the second hot water storage body 5 has a hollow 1 for a can body shaped along the outer contour of the first hot water storage can 4 and the second hot water storage can 5
4, and these can body depressions 14 are in close contact with the outer shells of the first hot water storage can 4 and the second hot water storage can 5, and the adjacent surfaces of the molded heat insulating materials 13 are in close contact with each other. It can be attached.

As described above, the hot water storage bodies 4 and 5 are covered with the plurality of molded heat insulating materials 13 to perform heat insulation and heat insulation, so that the plurality of molded heat insulating materials 13 are fitted into appropriate positions during manufacturing and assembly. It is only necessary to mount the device, efficient work can be performed, the man-hour for manufacturing and assembling is not required, the cost can be suppressed, and the attaching / detaching work at the time of maintenance is also very easy and the workability is improved.

The surfaces of the plurality of molded heat insulating materials 13 which are in contact with each other are provided with positioning fitting concave and convex portions 15 respectively.
Is provided, the positioning of the plurality of molded heat insulators 13 is accurate, and the degree of adhesion between the plurality of molded heat insulators 13 is increased, so that heat is released by air flowing through the gap between the plurality of molded heat insulators 13. In particular, the front upper left heat insulator 133, the front upper right heat insulator 134, and the rear heat insulator 135 can be prevented.
And the bottom surface of the top heat insulating material 136 are securely brought into close contact with each other by the fitting unevenness 15 so that the vertical dividing surfaces (the front upper left heat insulating material 133, the front upper right heat insulating material 134, and the rear heat insulating material 134) are provided. 135 and the horizontal dividing plane (the surface where the upper surface of the front upper left heat insulator 133, the front upper right heat insulator 134, the upper surface of the rear heat insulator 135, and the bottom surface of the top heat insulator 136). Convection is generated due to a temperature difference from the gap and the can body recessed portion 14, and it is possible to reliably prevent air from flowing and radiating heat.
The heat insulation performance is greatly improved.

A pipe for accommodating a plurality of pipes such as a water supply pipe 8 and a hot water supply pipe 10 connected to the first hot water storage can 4 and the second hot water storage can 5 on surfaces of the plurality of molded heat insulating materials 13 which are in contact with each other. The heat insulation and heat insulation of these pipes are provided by providing the groove 16 for the heat. Specifically, the bottom heat insulator 131 is provided on the upper surface in contact with the front lower heat insulator 132 or the rear heat insulator 135 and the second hot water storage A plurality of piping grooves 16 for accommodating a water supply pipe 8 connected to a lower portion of the can body 5, a heater forward pipe 11, and a can body connecting pipe 9 connected to a lower portion of the first hot water storage can 4 are provided, and the rear portion is provided. The heat insulating material 135 has a can body communication tube 9 and a second heat communicating body 9 that communicate the first hot water storage can body 4 and the second hot water storage can body 5 to a surface in contact with the front upper left heat insulating material 133 or the front upper right heat insulating material 134. Heater return tube 1 connected to the top of one hot water storage can 4
A plurality of pipe grooves 16 for accommodating the second hot water storage canister 2 are provided in the top heat insulating material 136. A plurality of piping grooves 16 in which the hot water supply pipe 10 connected to the upper part of the body 4 is stored.
Is provided.

[0021] Thus, by simply mounting the plurality of molded heat insulating materials 13 for holding and insulating the hot water storage bodies 4 and 5 at appropriate positions, not only the heat storage and heat insulation of the hot water storage cans 4 and 5 can be achieved. The plurality of pipes 8, 9, 10, 11, 12 connected to the respective hot water storage bodies 4, 5 are also fitted into the pipe grooves 16 provided on the surfaces of the plurality of molded heat insulating materials 13 which are in contact with each other. Heat insulation and insulation are performed, eliminating the need for dedicated insulation materials for pipes, making it easy to attach and detach pipes, improving workability, reducing man-hours during manufacturing and assembly, and greatly improving workability during maintenance.・ The cost for heat insulation can be significantly reduced.

17 is a bottom plate 171, a front plate 172, a rear plate 17
3 is an exterior body of the hot water storage tank 1 composed of the top plate 174.

At least a part of the outer surface of the plurality of molded heat insulators 13 is in contact with the inner surface of the outer package 17, and the plurality of molded heat insulators 13 are pressed inward by firmly attaching the outer package 17. The surfaces that come into contact with each other are more closely adhered to each other to improve the heat retention and heat insulation performance, and also support a part of the load of the hot water storage cans 4 and 5 applied to the can body supporting legs 6 and 7, and the hot water storage can inside the exterior body 17. Prevents the bodies 4 and 5 from tilting and falling.

Here, the plurality of molded heat insulating materials 13 are:
If it is divided into at least four parts: bottom insulation, top insulation, front insulation, and back insulation, it is possible to improve the heat insulation and insulation performance at a low cost with good desorption workability. By dividing the front heat insulating material, which is often removed, into upper and lower portions, the maintainability can be further improved.

FIG. 4 shows another embodiment of the plurality of molded heat insulating materials 13.
Alternatively, lightening is performed while leaving a certain thickness from the can body recessed portion 14 in contact with 5, and a part of the outer periphery that is not lightened is brought into contact with the inner surface of the exterior body 17. In this way, by firmly assembling the exterior body 17, the plurality of molded heat insulating materials 13 are pressed inward, and the surfaces that come into contact with each other are more closely adhered to each other, so that the heat insulation and heat insulation performance is improved. The cans 4 and 5 are prevented from tilting and falling, and the material cost of the heat-resistant expanded polystyrene is suppressed, so that the cost can be further reduced.

The present invention is not limited to this embodiment, but can be applied to other embodiments without changing its gist. For example, the present invention may be applied not to a heat pump heater but to a hot water storage can body. The hot water may be produced by the provided electric heater, or one hot water storage body may be used. In addition, even when the exterior body has a cylindrical shape, the outer periphery of the molded heat insulating material may be formed along the cylindrical exterior body.

[0027]

As described above, according to the first aspect of the present invention, it is possible to perform an efficient operation without requiring a man-hour for manufacturing and assembling while having an excellent heat retaining / insulating effect. The cost can be reduced, and the attachment / detachment work at the time of maintenance is very easy and the workability is improved.

According to the second aspect of the present invention,
The insulation and heat insulation of the pipes can be improved without the need for dedicated insulation materials for the pipes, improving the heat insulation and heat insulation performance, and the desorption work is also easy, the workability is good, the man-hours during manufacturing and assembly are reduced, and the workability at the time of maintenance is large. And the cost for heat insulation and heat insulation of the piping can be significantly reduced.

According to the third aspect of the present invention, the gap between the vertical divided surfaces is closed with the bottom heat insulating material and the top heat insulating material to prevent heat radiation due to natural convection of air due to a temperature difference, and to facilitate desorption work. The heat insulation and heat insulation performance can be improved at low cost.

According to the fourth aspect of the invention, the maintainability can be further improved.

According to the fifth aspect of the present invention, desired heat insulating and heat insulating performance can be obtained easily at low cost.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water storage type water heater according to one embodiment of the present invention.

FIG. 2 is an exploded perspective view of the hot water storage tank of the same embodiment.

FIG. 3 is an essential part cross-sectional view of the hot water storage tank of the same embodiment.

FIG. 4 is a perspective view of a molded heat insulating material according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hot water storage tank 4 first hot water storage can (hot water storage can) 5 second hot water storage can (hot water storage can) 8 water supply pipe (piping) 9 can body connection pipe (piping) 10 hot water supply pipe (piping) 11 heater forward pipe (Piping) 12 Heater return pipe (Piping) 131 Bottom insulation (molded insulation) 132 Front lower insulation (molded insulation) 133 Front upper left insulation (molded insulation) 134 Front upper right insulation ( Molded heat insulating material) 135 Rear heat insulating material (Molded heat insulating material) 136 Top heat insulating material (Molded heat insulating material) 14 Depression for can body 15 Fitting unevenness 16 Piping groove 17 Exterior

Claims (5)

[Claims] 1. A hot-water storage can body to which a plurality of pipes are connected, an exterior body for accommodating the hot-water storage body, and a can-body recess formed along the outer periphery of the hot-water can body. A hot-water storage tank, comprising: a plurality of molded heat-insulating materials which surround the outer periphery of the hot-water storage can body by closely contacting the concave portion with the hot-water storage can body. 2. A hot water storage tank according to claim 1, wherein a pipe groove for accommodating a pipe connected to said hot water storage can is provided on surfaces of said plurality of molded heat insulating materials which are in contact with each other. 3. The heat insulating material according to claim 1, wherein the plurality of molded heat insulating materials are divided into at least four parts: a bottom heat insulating material, a top heat insulating material, a front heat insulating material, and a rear heat insulating material. Hot water storage tank as described. 4. The hot water storage tank according to claim 3, wherein the front heat insulating material is divided into a front upper heat insulating material and a front lower heat insulating material. 5. The hot water storage tank according to claim 1, wherein the plurality of molded heat insulating materials are formed by processing heat-resistant expanded polystyrene.