TWI753355B - Electric water heater insulation structure - Google Patents

Abstract

The present invention at least includes: a water storage cylinder with a closed water storage area, a normal temperature water inlet connected to the water storage area, a heating device assembled at the water storage area, and communication from the water storage area to the water storage cylinder The hot water outlet at the outer side, wherein: the water storage cylinder at least includes an inner casing formed by the wall surface of the water storage area, an upper outer casing sleeved on the outer side of the inner casing from top to bottom, and filled in the inner casing. The upper foam layer between the inner shell and the upper outer shell, the lower outer shell sleeved on the outer side of the inner shell from bottom to top, and the concave lower foam layer filled at the inner side of the lower outer shell .

Description

Electric water heater insulation structure

The present invention relates to an electric water heater; in particular, it relates to an electric water heater thermal insulation structure capable of thermal insulation and reduction of reheating times.

According to the general electric water heater, please refer to Fig. 1, which consists of a water storage tank 1 with a closed water storage area 10, a normal temperature water inlet pipe 12 connected to the water storage area 10 of the water storage tank 1, and a The hot water pipe 13 from the water storage area 10 of the water storage cylinder 1 to the outside of the water storage cylinder 1, and a set of heating pipes 15 arranged at the water storage area 10 of the water storage cylinder 1; in this way, when the heating pipe When the 15 starts to heat, the cold water water source distributed on the peripheral side of the heating pipe 15 will directly absorb the heat energy generated by the heating pipe 15, so that the temperature of the water source starts to increase, and through the action of thermal convection, the water source that has been stored in the storage The heating pipe 15 stops operating only after the cold water source in the water zone 10 reaches a predetermined temperature due to heating.

Although the above creation can achieve its creative purpose, however, in the process of operation and use, the following defects will occur:

When the conventional electric water heater is heated to a predetermined temperature for the first time and then stands still, the hot water will be directly conducted to dissipate heat through the water storage tank 1 due to the excessive contact area between the water storage tank 1 and the air outside the water storage tank 1 . In the air, the hot water in the water storage area 10 will quickly cool down to the predetermined starting temperature, so that it does not However, in addition to reheating all the warm water sources in the entire water storage area, it will also cause the heating frequency to be too frequent, which will increase its power consumption and thus increase the electricity cost of consumers.

Therefore, how to develop a device that can effectively shorten the number of reheating and reduce the loss of invisible heat energy is a technical issue that the industry needs to solve as a priority.

The main content of the thermal insulation structure of the electric water heater of the present invention is to provide an upper foam layer between the inner shell and the upper outer shell formed by using the wall surface of the water storage area of the water storage cylinder, and the upper foam layer is protruded from the inner shell. One end of the normal temperature water inlet and one end of the hot water outlet at the outer side of the body are respectively accommodating and screwed to the outer side of the lower outer casing, so that the opening edge of the lower foam layer located at the lower outer casing has been filled. The inner ring cone can be closely attached to the outer ring cone of the opening end edge of the upper foam layer; in this way, the outer ring cone and the inner ring cone can be closely displaced from each other due to The compressive force increases the density of its combination, so as to reduce the contact area formed between the inner casing and the outer sides of the upper and lower outer casings, and effectively block the heat loss from the inner casing due to heat conduction, It is a progressive proposition to greatly reduce the number of reheating and reduce the user's electricity bill, thereby achieving the effect of thermal insulation, energy saving and carbon reduction.

In order to achieve the purpose of the above-mentioned creation, the main technical means of the present invention at least include: a water storage cylinder with a closed water storage area, a normal temperature water inlet connected to the water storage area, and a water inlet assembled at the water storage area. A heating device, and a hot water outlet connecting the water storage area to the outside of the water storage cylinder, wherein: the water storage cylinder is provided with a The water storage area includes at least an inner casing formed by the wall surface of the water storage area, an upper outer casing sleeved on the outer side of the inner casing from top to bottom, and filled in the inner casing to the upper outer casing. an upper foamed layer between the outer casings, a lower outer casing sleeved on the outer side of the inner casing from bottom to top, and a concave lower foamed layer filled at the inner side of the lower outer casing; the lower end of the inner casing There is an open end connected to the water storage area, the normal temperature water inlet protruding outward and the hot water outlet protruding outward; the open end is used for a bottom plate of the heating device to completely The cover assembly is used for fixing, and enables the heating pipe of the heating device to be disposed of into the water storage area from the open end; and the lower outer casing having the concave lower foam layer is appropriately provided with The through-shaped first and second through holes and through-shaped wire holes allow one end of the normal temperature water inlet, one end of the hot water outlet and one end of the wire to protrude through the first and second through holes and the wire hole respectively. Outside the outer casing; the outer side of the lower outer casing that is located near the wire hole can be used for assembling a control box, and the wire can be connected to the control box after passing through the wire hole; In addition, the thickness of the upper foam layer is thicker than the thickness of the lower foam layer, and a space area is formed between the lower foam layer and the outer side of the inner shell, so that the space area is used for a sensor or It is used for accommodating electric wires; the open end edge of the upper foam layer is formed with a protruding cone-shaped outer ring cone, and the opening end edge in the lower foam layer is formed with a protruding cone-shaped inner ring cone. The compressive force between the outer ring cone and the inner ring cone can increase the density of their combination, thereby effectively blocking the heat radiation conduction from the inner shell; the normal temperature water inlet at least includes There is a pressing surface pressed against the surface of the lower foam layer 5, and an external thread extending downward from the pressing surface, so that the external thread can pass through the first through hole and interact with a The nut parts are tightly screwed to each other, so that the pressing surface can be tightly pressed against the surface of the lower foam layer; the heat The water outlet at least includes a pressing surface pressed against the surface of the lower foam layer, and a male thread extending downward from the pressing surface, so that the male thread can pass through the second After perforation, it is tightly screwed with a nut member, so that the pressing surface can be tightly pressed against the surface of the lower foam layer; in addition, a hollow conduit is arranged at the hot water outlet, and the conduit is The position of the horizontal line of the water outlet is higher than the position of the highest horizontal line of the heating pipe; the heating device includes at least one or more heating pipes, and a bottom plate for the heating pipe group.

2‧‧‧Water tank

20‧‧‧Water Storage Area

201‧‧‧Inner shell

2011‧‧‧Open end

202‧‧‧Upper shell

203‧‧‧Upper foam layer

2031‧‧‧Outer ring cone

204‧‧‧Lower shell

205‧‧‧Lower foam layer

2051‧‧‧Inner ring cone

206‧‧‧First perforation

207‧‧‧Second perforation

208‧‧‧Wire hole

3‧‧‧Water inlet at room temperature

30‧‧‧Pressure surface

31‧‧‧External thread

5‧‧‧Heating device

50‧‧‧Bottom

51‧‧‧Heating tube

6‧‧‧Hot water outlet

60‧‧‧Pressure surface

61‧‧‧Male thread

65‧‧‧Catheters

651‧‧‧Drain

8‧‧‧nut parts

90‧‧‧Sensor

91‧‧‧Wire

A‧‧‧Space Area

B‧‧‧Control Box

Figure 1 is a schematic diagram of a combined cross-sectional view of a conventional electric water heater.

Fig. 2 is a combined cross-sectional exploded view of the thermal insulation structure of the electric water heater of the present invention.

FIG. 3 is a combined cross-sectional view of FIG. 2 .

The present invention relates to a thermal insulation structure for an electric water heater, please refer to FIG. 2 to FIG. 3 , which at least includes: a water storage cylinder 2 having a closed water storage area 20 , a normal temperature connected to the water storage area 20 The water inlet 3, the heating device 5 arranged at the water storage area 20, and the hot water outlet 6 connecting the water storage area 20 to the outside of the water storage cylinder 2, wherein:

The water storage cylinder 2 is provided with a water storage area 20 for storage and placement, which at least includes an inner casing 201 formed on the inner wall of the water storage area 20, and is sleeved on the inner casing 201 from top to bottom. The upper outer casing 202 at the outer side, the upper foam layer 203 filled between the inner casing 201 and the upper outer casing 202, from bottom to top A lower outer casing 204 sleeved on the outer side of the inner casing 201, and a concave lower foam layer 205 filled at the inner side of the lower outer casing 204; a lower end of the inner casing 201 is provided with a connection to the water storage The open end 2011 at the zone 20, the normal temperature water inlet 3 protruding outward and the hot water outlet 6 protruding outward; the open end 2011 is for a bottom plate 50 of the heating device 5 to completely cover the group. It is used for fixing and enables the heating pipe 51 of the heating device 5 to be disposed of into the water storage area 20 from the open end 2011; and the lower outer shell 204 having the concave lower foam layer 205 is suitable for There are first and second through holes 206, 207, and a through hole 208, respectively, so that one end of the normal temperature water inlet 3, one end of the hot water outlet 6 and one end of the wire 91 can pass through the first , two through holes 206, 207 and the wire hole 208, and then protrude out of the outer surface of the lower shell 204; (that is, the control box B is provided with a circuit breaker, an indicator light, etc.), and the wire 91 can be connected to the control box B through the wire hole 208; in addition, the upper foam layer The thickness of 203 is thicker than that of the lower foam layer 205, and a space area A is formed between the lower foam layer 205 and the outer side of the inner shell 201, so that the space area A is used for a sensor 90 or For accommodating the wires 91; the open end edge of the upper foam layer 203 is formed with a convex cone-shaped outer ring cone 2031, and the open end edge of the lower foam layer 205 is formed with a convex cone-shaped inner ring The taper portion 2051 increases the density of its combination by the compressive force between the outer ring taper portion 2031 and the inner ring taper portion 2051 due to mutual misalignment, thereby effectively blocking the heat radiation conduction from the inner casing 201. use;

The normal temperature water inlet 3 at least includes a pressing surface 30 pressed against the surface of the lower foam layer 205 , and an external thread 31 (ie, the external thread 31 ) extending downward from the pressing surface 30 . It is located on the outer peripheral side of the normal temperature water inlet 3), so that the external thread 31 can pass through the first through hole 206 and then tightly screw with a nut member 8, so that the pressing surface 30 can be tightly pressed against the top at the surface of the lower foam layer 205;

The hot water outlet 6 at least includes a pressing surface 60 pressed against the surface of the lower foam layer 205 , and a male thread 61 (ie, the male thread 61 ) extending downward from the pressing surface 60 . It is located on the outer peripheral side of the normal temperature water inlet 3), so that the male thread 61 can pass through the second through hole 207 and then tightly screw with a nut member 8, so that the pressing surface 60 can be tightly pressed against the top On the surface of the lower foam layer 205; also, a hollow conduit 65 is arranged at the hot water outlet 6, and the horizontal position of the water outlet 651 of the conduit 65 is higher than the highest horizontal position of the heating pipe 51;

The heating device 5 includes at least one or more heating pipes 51 and a bottom plate 50 for assembling the heating pipes 51;

With the above structure, the upper and lower foam layers 203, 204 can be filled between the upper outer casing 202 and the inner casing 201 and between the lower outer casing 204 and the inner casing 201 respectively, so as to reduce The contact areas formed between the inner casing 201 and the outer sides of the upper and lower outer casings 202 and 204, respectively, can greatly reduce or solve the problem of heat dissipation loss caused by heat conduction of the inner casing 201, thereby achieving thermal insulation. cum the effect of energy saving and carbon reduction.

When assembling and using, it is only necessary to set the sensor 90 on the outer side of the inner casing 201, and install the normal temperature water inlet 3, the hot water outlet 6 and the electric wire on the outer side of the inner casing 201. 91 respectively penetrate into the outer sides of the first and second through holes 206, 207 and the wire hole 208 protruding from the lower outer shell 204 with the concave lower foam layer 205, and then use the nut member 8 to screw them together tightly. At the outer thread 31 of the normal temperature water inlet 3 and the male thread 61 of the hot water outlet 6, so that the outer ring cone 2031 already located at the opening end edge of the upper foam layer 203 can be tightly pressed and fitted to the outer thread 61 of the hot water outlet 6. The inner ring cone portion 2051 is located at the opening end edge of the lower foam layer 205, so that the outer ring cone portion 2031 and the inner ring cone portion 2051 are mutually displaced due to the compressive force to increase the bonding density between each other. In this way, the contact area formed between the inner casing 201 and the outer air of the upper and lower outer casings 202 and 204 can be reduced, thereby greatly reducing or solving the problem of the inner casing 201 caused by heat conduction. The problem of heat dissipation and loss can also be greatly reduced, and the number of reheating can also be greatly reduced and the cost of electricity bills paid by users can be reduced, thereby achieving the effects of heat preservation, energy saving and carbon reduction.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention; therefore, all equivalent changes or modifications made according to the features and spirit described in the scope of the present invention shall include within the scope of the patent application of the present invention.

2‧‧‧Water tank

20‧‧‧Water Storage Area

201‧‧‧Inner shell

2011‧‧‧Open end

202‧‧‧Upper shell

203‧‧‧Upper foam layer

2031‧‧‧Outer ring cone

204‧‧‧Lower shell

205‧‧‧Lower foam layer

2051‧‧‧Inner ring cone

206‧‧‧First perforation

207‧‧‧Second perforation

208‧‧‧Wire hole

3‧‧‧Water inlet at room temperature

30‧‧‧Pressure surface

31‧‧‧External thread

5‧‧‧Heating device

50‧‧‧Bottom

51‧‧‧Heating tube

6‧‧‧Hot water outlet

60‧‧‧Pressure surface

61‧‧‧Male thread

65‧‧‧Catheters

651‧‧‧Drain

8‧‧‧nut parts

90‧‧‧Sensor

91‧‧‧Wire

B‧‧‧Control Box

Claims (8)

An electric water heater thermal insulation structure, which at least comprises: a water storage cylinder with a closed water storage area, a normal temperature water inlet connected to the water storage area, a heating device assembled at the water storage area, and a communication with the water storage area. from the area to the hot water outlet at the outer side of the water storage cylinder, wherein: the water storage cylinder at least includes an inner casing formed by the wall surface of the water storage area, and an upper outer casing sleeved on the outer side of the inner casing from top to bottom. body, an upper foam layer filled between the inner shell and the upper outer shell, a lower outer shell sleeved on the outer side of the inner shell from bottom to top, and a depression filled in the inner side of the lower outer shell The lower end of the inner shell is provided with the normal temperature water inlet and the hot water outlet in a protruding shape, so that one end of the normal temperature water inlet and one end of the hot water outlet can pass through the first and second perforations. and protrudes out of the lower outer casing; an external thread is formed on the outside of the normal temperature water inlet and a male thread is formed on the outside of the hot water outlet, so that the external thread and the male thread pass through the first and second respectively. After perforating, it is tightly screwed with a nut member, so that the lower foamed layer already located at the lower outer casing can be tightly combined with the upper foamed layer already located at the upper outer casing; by The above structure can ensure that the upper and lower foam layers are respectively filled between the upper outer shell and the inner shell and between the lower outer shell and the inner shell, so as to reduce the number of the inner shell and the upper and lower shells, respectively. The contact area formed between the outer sides of the lower outer casing can indeed greatly reduce or solve the problem of heat dissipation loss caused by heat conduction of the inner casing, and can also greatly reduce the number of reheating and reduce user expenditure. The cost of electricity, and then achieve the effect of heat preservation, energy saving and carbon reduction. The thermal insulation structure for an electric water heater as described in claim 1, wherein a protruding cone-shaped outer ring cone is formed at the opening end edge of the upper foam layer, and the lower The opening end edge in the foam layer is formed with a protruding cone-shaped inner ring cone, and the bonding density of the outer ring cone and the inner ring cone is increased due to the mutual displacement of the compressive force between the outer ring cone and the inner ring cone. The thermal insulation structure for an electric water heater as described in item 2 of the scope of the patent application, wherein the first and second through holes penetrate through the lower outer shell and the lower foam layer respectively. The thermal insulation structure for an electric water heater as described in claim 1, 2 or 3, wherein the thickness of the upper foam layer is thicker than the thickness of the lower foam layer. The thermal insulation structure for an electric water heater as described in claim 4, wherein a space area is formed between the lower foam layer and the outer side of the inner shell, and the space area is used for accommodating a sensor or a wire. The thermal insulation structure for an electric water heater as described in claim 5, wherein the heating device comprises at least one or more heating pipes, and a bottom plate for the heating pipes to be assembled. The thermal insulation structure of the electric water heater as described in claim 6, wherein a hollow conduit is arranged at the hot water outlet, and the horizontal position of the drain outlet of the conduit can be higher than the highest horizontal position of the heating pipe. The storage instantaneous heat electric water heater structure as described in claim 7, wherein the inner casing is provided with an open end communicating with the water storage area, and the open end is for a bottom plate of the heating device to completely The cover assembly is fixed at the open end, and enables the heating pipe of the heating device to be disposed of into the water storage area from the open end.

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