JP2016138675A - Hot water storage type water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot water storage type water heater which improves detection accuracy by preventing lowering in the degree of adhesion of a temperature detection tool to an outside surface of a can body.SOLUTION: A vacuum heat insulation material piece 52 for heat insulation is provided on a radial direction outer peripheral part of a substantially cylindrical can body 2 for storing hot water, and a thermistor 29 is mounted between the can body 2 and the vacuum heat insulation material piece 52. The vacuum heat insulation material piece 52 includes a substantially circular cross-section, and an edge part 52S is adhered to the outside surface of the can body 2 by an adhesive tape 59. The thermistor 29 is provided so as to be sandwiched between an adhering region C or a neighborhood region C' of the adhesive tape 59 and the can body 2 outside surface. Thereby, the thermistor 29 can be adhered to the can body 2 with high degree of adhesion, and detection accuracy can be improved.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a hot water storage type hot water heater in which a temperature detector and a heat insulating material are provided on the outer peripheral portion of a can body for storing hot water for hot water supply.

  Conventionally, in this type of hot water storage type water heater, as described in Patent Document 1, a temperature detector for detecting the temperature of hot water stored in the can body at the outer peripheral portion of the can body, There was what provided the heat insulating material (foaming heat insulating material and vacuum heat insulating material) for preventing the temperature fall by heat dissipation of a can.

Japanese Patent No. 4924054

  By the way, in this conventional one, a foam molded heat insulating material is provided in a part of the circumferential direction with respect to the outer peripheral portion of the can body, a vacuum heat insulating material is wound around the installation location, and the temperature detector is made into the foam molded heat insulating material. Provided. Here, since the heat insulation performance of the vacuum heat insulating material is higher than that of the foam-molded heat insulating material, for example, a configuration in which the vacuum heat insulating material is wound over almost the entire circumference of the outer peripheral portion of the can body is also conceivable. In this case, for example, a plurality of vacuum heat insulating materials each having a substantially arc-shaped cross section (in other words, each having a partial cylindrical surface) are arranged so as to cover the outer periphery of the can body, and the edges of each vacuum heat insulating material are appropriately arranged. Affix to the outer surface of the can with the sticking tool. And a temperature detector will be provided between the outer surface of a can body and the inner surface of a vacuum heat insulating material.

  At this time, in order to ensure high detection by the temperature detector, it is preferable that the temperature detector is brought into close contact with the outer surface of the can as much as possible. However, when the edge of the vacuum heat insulating material is attached to the can body by pasting as described above, the vacuum heat insulating material is likely to leave the outer surface of the can body and leave a gap between the can body and the temperature. There was a problem that the degree of adhesion of the detection tool to the outer surface of the can body was lowered, and the detection accuracy was lowered.

  In order to solve the above problem, in claim 1 of the present invention, a substantially cylindrical can body that stores hot water heated by a heating means inside, and at least a part of a radially outer peripheral portion of the can body are provided. In a hot water storage type hot water heater having a vacuum heat insulating material piece having a substantially arc-shaped cross section provided so as to cover, and an affixing tool for attaching an edge of the vacuum heat insulating material piece to a radially outer surface of the can body The temperature detection tool is provided so as to be sandwiched between the radially inner surface of the sticking region of the sticking tool or the vicinity thereof in the vacuum heat insulating material piece and the radially outer surface of the can body. is there.

  Moreover, in Claim 2, the said sticking tool is an adhesive tape which affixed the adhesive surface over the said radial direction outer surface of the said can body from the radial direction outer surface of the edge of the said vacuum heat insulating material piece.

  According to a third aspect of the present invention, the temperature detector is a thermistor capable of detecting temperatures in all directions.

  According to a fourth aspect of the present invention, the vacuum heat insulating material piece is formed by bending a flat heat insulating material base material into a substantially circular arc cross section.

  Moreover, in Claim 5, the said temperature detection tool is inserted | pinched between the said radial inside surface of the sticking area | region by the said sticking tool among the said vacuum insulation material pieces, and the said radial outside surface of the said can body. Is provided.

  According to the first aspect of the present invention, a vacuum heat insulating piece for heat insulation is provided on the radially outer peripheral portion of the substantially cylindrical can body for storing hot water therein, and the temperature of the hot water inside the can body is further detected. A temperature detector is provided for the purpose. In order to ensure high detection accuracy by the temperature detector, it is preferable that the temperature detector is brought into close contact with the can as much as possible.

  Here, the said vacuum heat insulating material is provided with the cross section of a substantially circular arc cross section (in other words, it comprises the partial cylindrical surface), and the edge part is affixed on the outer surface of the said can body with a sticking tool. It has been. Thus, when the edge part of a vacuum heat insulating material is attached to a can body by sticking, the sticking area (in other words, the edge part) and its vicinity area are relatively closely attached to the outer surface of the can body, and between the can body. Although it is difficult to generate a gap, the gap tends to be easily formed between the outer surface of the can body and the can body as the distance from the pasting region increases.

  Therefore, in claim 1, the temperature detection tool is provided so as to be sandwiched between the pasting region (where the gap is unlikely to occur as described above) or a region in the vicinity thereof and the outer surface of the can body. Thereby, since a temperature detection tool can be made to contact | adhere with a high contact | adherence degree with respect to a can, detection accuracy can be improved.

  According to claim 2, the vacuum heat insulating piece is easily and firmly attached by sticking the adhesive surface located on the back side of the adhesive tape from the edge surface of the vacuum heat insulating piece to the surface of the can body. Can be attached to the can body. And by the firm attachment, the said temperature detection tool can be firmly stuck with respect to a can, and detection accuracy can be improved reliably.

  In the case where the temperature detector is an omnidirectional detection type thermistor, if there is a gap around the thermistor, the temperature of the air is detected, and the detection accuracy is particularly likely to decrease. Therefore, according to the third aspect, an air layer that can be generated around the thermistor can be eliminated by bringing the thermistor, which is a temperature detection tool, into close contact with the can body in the pasting region and the vicinity thereof. . As a result, the detection accuracy can be further improved.

  According to a fourth aspect of the present invention, the vacuum heat insulating material piece is manufactured by bending a flat heat insulating material base material into a substantially circular arc cross section by an appropriate method. In this case, even if the vacuum heat insulating material piece is arranged so as to cover the outer peripheral portion of the can body in the bent state, a restoring force is applied to return to the original flat plate shape on the material. There is. When such a restoring force is applied, a gap tends to be easily formed between the vacuum heat insulating material piece and the outer peripheral portion of the can body. Therefore, the degree of adhesion of the temperature detector to the can body is reduced, and detection accuracy is reduced. Is prone to decline. Therefore, in such a case, the effect of improving the detection accuracy is particularly increased by reliably bringing the temperature detection tool into close contact with the can body by the above-described method.

  In addition, according to the fifth aspect, since the temperature detection tool is provided directly behind the application position (applied region) by the application tool, the temperature detection tool is more closely attached to the can body, and the detection accuracy is improved. Furthermore, it can improve reliably.

1 is an overall schematic configuration diagram of a hot water storage type water heater according to an embodiment of the present invention. Exploded perspective view showing details of can and surrounding structure Explanatory drawing showing the roll processing equipment at the time of manufacture of a vacuum heat insulating material piece Schematic side view corresponding to an arrow view from the direction of arrow IV in FIG. 2, showing the attachment state of the vacuum heat insulating material piece using the adhesive tape around the thermistor The top view seen from the arrow Va direction in FIG. 4, and the cross-sectional view by the Vb-Vb cross section in FIG. Longitudinal sectional view taken along the line VI-VI in FIG. Cross-sectional view explaining the gap formed between the vacuum insulation piece and the can Cross-sectional view of the can with the side foam insulation piece attached, and a cross-sectional view showing the state where the thermistor is disassembled to be exposed The perspective view showing the state which decomposed | disassembled so that a thermistor might be exposed Cross-sectional view of a modified example in which the thermistor is positioned in the pasting area Cross-sectional view of a modification that does not use metal tape

  Next, an embodiment of the present invention will be described with reference to FIGS.

  An overall schematic configuration of a hot water storage type hot water supply apparatus including the hot water storage type hot water supply apparatus of the present embodiment is shown in FIG. In FIG. 1, this hot water storage type hot water supply apparatus 100 is a device for boiling hot water and storing hot water in the midnight hours when the unit price of contracted electric power by time zone is low, and using the hot water stored in the hot water for hot water supply. A hot water storage tank unit 1 provided with a body 2 (hot water storage tank), a heat pump unit 3 as a heating means for heating hot water in the can body 2, a hot water tap 4 provided in a kitchen, a washroom, etc., for example, hot water supply A hot water supply remote controller 5 provided in the vicinity of the stopper 4 and a bathtub 6 are provided.

  The hot water storage tank unit 1 is connected to the can body 2 installed inside an exterior case (not shown) serving as a housing, a hot water pipe 12 connected to the upper portion of the can body 2, and a lower portion of the can body 2. The mixing water supply pipe 13, the mixing valve 15 for mixing the high temperature water from the hot water supply pipe 12 and the low temperature water from the bypass pipe 14 branched from the water supply pipe 13, and the hot water supply pipe 16 connected downstream of the mixing valve 15. A hot water filling pipe 20 branched from the hot water supply pipe 16 and connected to the bathtub 6, a hot water filling valve 21 for opening and closing the hot water filling pipe 20, and an overpressure of the can body 2 connected to branch from the hot water discharge pipe 12. An overpressure relief valve 23 for releasing water, a hot water supply temperature sensor 17 provided in the hot water supply pipe 16, a hot water supply flow rate sensor 18 provided in the hot water supply pipe 16, and a pressure reducing valve 24 for reducing the supply water pressure provided in the water supply pipe 13. And a water supply temperature sensor provided in the water supply pipe 13 With 9, a hot water filling flow sensor 22 integrates the flow rate through the water filling pipe 20, and a hot water supply control unit 25 for controlling the various devices in the hot water storage tank unit 1 includes a microcomputer.

  In the can body 2, a plurality of thermistors 29 are arranged along the vertical direction. Based on the temperature information detected by these thermistors 29, it is detected how much heat is left in the can body 2, and further the temperature distribution in the vertical direction in the can body 2 is detected. The configurations of the can body 2 and the thermistor 29 will be described in detail later.

  The can body 2 and the heat pump unit 3 are connected to each other by a heating circulation circuit 28 including a heat pump forward pipe 26 and a heat pump return pipe 27 for circulating hot water. The heat pump unit 3 includes a heat pump circuit 34, a heat pump circulation pump 36, and a heat pump control unit 39 that controls driving of the heat pump circuit 34. The heat pump circuit 34 includes a compressor 30 that compresses carbon dioxide refrigerant, a refrigerant-water heat exchanger 31 as a condenser, an electronic expansion valve 32, and a forced air-cooled evaporator 33. A heat entrance temperature sensor 37 for detecting the temperature of hot water flowing into the refrigerant-water heat exchanger 31 is provided on the inlet side of the refrigerant-water heat exchanger 31 of the heating circuit 28. On the outlet side of the water heat exchanger 31, a heat exchange outlet temperature sensor 38 that detects the temperature of hot water flowing out from the refrigerant-water heat exchanger 31 is provided.

  The hot water supply remote controller 5 is set with a hot water supply temperature setting switch 40 for setting a hot water supply set temperature, a bath temperature setting switch 42 for setting a bath set temperature, and hot water at the bath set temperature by a hot water filling amount setting switch 41. A bath automatic switch 43 that fills the bathtub 6 by the amount of hot water and keeps it warm for a predetermined time, a display unit 45 that displays an appropriate display, and a remote control unit that includes a microcomputer and communicates with the hot water supply control unit 25 (not shown). And).

  Next, the details of the can 2 and the surrounding structure will be described with reference to FIG. In addition, in order to avoid the complexity of illustration, the various pipes connected to the can 2 and the outer case are omitted. In FIG. 2, the can body 2 is a metal hollow can that is formed in a substantially cylindrical shape as a whole, and two vacuum heat insulating material pieces that cover the outer periphery in the radial direction of the can body 2 over almost the entire circumference. 52, four vacuum heat insulating material pieces 53, 54, 55, 56 covering the entire can body 2 including the vacuum heat insulating material piece 52 and the thermistor 29 described later, and the foam heat insulating material pieces 53 to 56. And a base portion 57 on which the can body 2 is placed.

  The vacuum heat insulating material piece 52 is a structure in which, for example, glass wool is filled as a core material inside a bag body of an aluminum film, and is made into a substantially vacuum state. The whole is formed in a substantially semi-cylindrical shape (substantially arcuate in cross section). In the example shown in the figure, the two vacuum heat insulating material pieces 52 cover a substantially 180 ° range (a total range of approximately 360 ° total circumference) facing each other with respect to the radially outer surface of the can body 2. The upper edge part, the lower edge part, and the edge part of the circumferential direction both ends of each vacuum heat insulating material piece 52 are being fixed to the can body 2 with the adhesive tape 59 as a sticking tool which consists of polypropylene films, for example (in FIG. 2). In order to prevent complications, only the adhesive tape 59 attached to the edges at both ends in the circumferential direction is shown).

  An example of the manufacturing method of the vacuum heat insulating material piece 52 will be described with reference to FIG. As described above, the vacuum heat insulating material piece 52 is manufactured by rolling a flat heat insulating material base material. That is, as shown in FIG. 3, one upper roller 63 is disposed above the two lower rollers 61 and 62 in the processing equipment for performing this roll processing. The heat insulating base material 52 ′ having a flat plate shape (not shown) is inserted through two gaps between the upper roller 63 and the lower rollers 61 and 62. Thereafter, the upper roller 63 is moved downward to press the heat insulating base material 52 '(see the white arrow), and the rollers 61, 62, 63 are rotated to convey the vacuum heat insulating piece 52 (see the arrow). Thus, it is possible to obtain the vacuum heat insulating material piece 52 that is curved in the shape of a substantially circular arc in cross section by bending the heat insulating material base material 52 '.

  The foamed heat insulating material pieces 53 to 56 are molded products made of a material having mechanical rigidity (for example, heat-resistant foamed polystyrene), and are formed into a substantially hemispherical shape so as to cover the upper surface of the can body 2. A piece 53, a lower foam insulation material piece 54 formed in a substantially hemispherical shape so as to cover the lower surface of the can body 2, and a 180 ° range facing the radially outer surface of the can body 2 respectively. It includes two side foam insulation pieces 55 and 56 formed in a substantially semi-cylindrical shape. In the drawing, the lower foam heat insulating material piece 54 is provided integrally with the base portion 57. The inner diameters of the two side foam insulation pieces 55 and 56 are set to be substantially the same as the outer diameter of the vacuum insulation piece 52 covering the outer peripheral surface of the can body 2, and the foam insulation The material pieces 55 and 56 cover the radially outer peripheral portions of the two vacuum heat insulating material pieces 52 over almost the entire circumference.

  In the hot water storage type hot water supply apparatus 100 having the above basic configuration, as shown in FIG. 2, five thermistors 29 for detecting the temperature of hot water inside the can body 2 are provided on the radially outer surface of the can body 2. It is arranged in a line in the vertical direction. The thermistor 29 is, for example, a thermocouple that is entirely covered with resin, and has a diameter of about 3 mm. The thermistor 29 can detect the temperature in all directions (that is, the direction of the surrounding 360 °). Each of the five thermistors 29 is affixed and fixed to the radially outer surface of the can body 2 so as to be covered with a metal tape 58 (shown schematically by broken lines in FIG. 2). The vacuum heat insulating material piece 52 is fixed to the can body 2 by the adhesive tape 59 while covering the outer surface of the can body 2 with the thermistor 29 attached in this manner.

  Next, the attachment state of the vacuum heat insulating material piece 52 using the adhesive tape 59 around the thermistor 29 will be described with reference to FIGS. 4, 5, and 6. In addition, in order to avoid the complexity of illustration, only the can body 2, the vacuum heat insulating material piece 52, the thermistor 29, the metal tape 58, and the adhesive tape 59 are illustrated, and illustration of members other than these is abbreviate | omitted.

  4, 5, and 6, two vacuum heat insulating material pieces 52 are disposed on the outer periphery of the can 2 in the radial direction substantially over the entire circumference. At this time, the pressure-sensitive adhesive surface on the back surface side of the pressure-sensitive adhesive tape 59 is in the radial direction of the can body 2 from the radially outer surface of the upper edge portion 52U, the lower edge portion 52L, and both circumferential edge portions 52S of each vacuum heat insulating material piece 52. Adhesive tape 59 is affixed over the outer surface, whereby each vacuum heat insulating material piece 52 is attached to the radially outer surface of can body 2.

  At this time, among the five thermistors 29 arranged in the vertical direction on the radially outer surface of the can body 2, four thermistors 29 excluding the lowest one are vacuum insulated as shown in FIG. 6. It arrange | positions so that it may be pinched | interposed between the radial direction inner surface of the material piece 52, and the outer surface of the can 2. FIG. Specifically, of the two vacuum heat insulating material pieces 52 shown on the left and right in FIGS. 4 and 5, the adhesive tape 59 is attached in the vicinity of the left end portion of the vacuum heat insulating material piece 52 shown on the right side in the drawing. It is arranged between the radially inner surface of the region C ′ in the vicinity of the region C (see the enlarged view in FIG. 5B) and the radially outer surface of the can body 2.

  Here, in the case of the fixing method by sticking the tape as described above, in the vacuum heat insulating material piece 52, the sticking area C by the adhesive tape 59 (in other words, the edge part 52S) and its neighboring area C ′ are the can body. 2 is relatively in close contact with the outer surface of the can 2, and the gap S is not easily formed between the can 2 and the gap S away from the outer surface of the can 2 as the distance from the pasting region C increases. It tends to occur. For this reason, as shown in FIG. 7A as a comparative example, the thermistor 29 is disposed in the vicinity of the central portion in the circumferential direction of the vacuum heat insulating material piece 52 (in other words, the radially inner surface of the central portion in the circumferential direction of the vacuum heat insulating material piece 52 When the thermistor 29 is disposed between the outer surface of the can body 2 and the radially outer surface of the can body 2), the degree of adhesion of the thermistor 29 to the radially outer surface of the can body 2 is reduced. Generally, in order to ensure high detection accuracy by the thermistor 29, it is preferable that the thermistor 29 is closely attached to the outer surface of the can body 2 as much as possible. Therefore, when the contact degree is reduced as described above, the detection accuracy of the thermistor 29 is lowered. There is a risk.

  In the present embodiment, the thermistor 29 is placed between the region C ′ near the sticking region C of the pressure-sensitive adhesive tape 59 of the vacuum heat insulating piece 25 and the outer surface of the can body 2 as described above. Provided (see FIG. 7B). Thereby, the thermistor 29 can be adhered to the can body 2 with a high degree of adhesion, and the detection accuracy can be improved.

  In the above description, the two side foam heat insulating material pieces 55 and 56 are provided so as to cover the radially outer peripheral side of the two vacuum heat insulating material pieces 52. However, the present invention is not limited to this, and three or more foam heat insulating materials are provided. A piece may be used, and for example, one foam heat insulating material piece having a cross-sectional shape such as an Ω shape may be used. Also, the vacuum heat insulating material pieces 52 to be pressed are not limited to two as described above, but may be three or more, and one vacuum heat insulating material piece having a cross-sectional shape such as an Ω shape, for example. It may be. In any case, the thermistor 29 can be formed by providing the thermistor 29 between the vicinity area C ′ (or the sticking area C) of the adhesive tape 59 of one vacuum heat insulating material piece and the outer surface of the can body 2. 2 can be adhered with a high degree of adhesion.

  As described above, according to the present embodiment, between the vicinity region C ′ of the adhesive tape 59 where the gap S is unlikely to occur in the vacuum heat insulating piece 52 and the outer surface of the can body 2, A thermistor 29 is provided so as to be sandwiched. As a result, the thermistor 29 can be brought into close contact with the can body 2 with a high degree of adhesion, so that the detection accuracy can be improved.

  In addition, after the start of use of the can body 2, appropriate maintenance (including replacement) may be performed in order to generate some malfunction of the thermistor 29 and maintain reliability. At that time, since the thermistor 29 is provided on the radially outer surface of the can body 2 as described above, in order to perform the maintenance work from the outside of the can body 2, the outermost side foam insulation material piece. It is necessary to expose the thermistor 29 in the back which separates 55 and 56 and the vacuum heat insulating material piece 52 inside thereof to the outside. This requires a complicated disassembly operation such as removal of the side foam heat insulating material pieces 55 and 56, which are strength molded products, and peeling of the vacuum heat insulating material pieces 52 inside thereof.

  In this embodiment, as shown in FIG. 8A corresponding to FIG. 5B, the two side foam heat insulating material pieces provided so as to cover the radially outer peripheral portions of the two vacuum heat insulating material pieces 52. For example, 55 and 56 are fixed to each other by affixing the fixing tape 60 over the radially outer surfaces of the circumferential end portions that are abutted with each other. Therefore, during the maintenance work, as shown in FIGS. 8B and 9 corresponding to FIG. 8A, the fixing of the two side foam heat insulating materials 55 and 56 by the fixing tape 60 is released. After exposing the vacuum heat insulating material pieces 52, the entire arrangement row of the thermistors 29 can be easily exposed to the outside simply by turning a part of the circumferential end of the vacuum heat insulating material piece 52 on the side where the thermistors 29 are arranged. Can be made. In this process, the thermistor 29 can be easily exposed to the outside by minimizing the amount of disassembly work such as removal of the side foam heat insulating material 56 and peeling of the vacuum heat insulating material piece 52 from the can body 2. It is excellent in maintainability.

  In the present embodiment, in particular, the adhesive surface located on the back surface side of the adhesive tape 59 is pasted from the edge surface of the vacuum heat insulating material piece 52 to the surface of the can body 2. Thereby, the vacuum heat insulating material piece 52 can be easily and firmly attached to the can body 2, and by the firm attachment, the thermistor 29 can be securely adhered to the can body 2 and the detection accuracy can be reliably improved. It can be done.

  In the present embodiment, in particular, the thermistor 29 is configured to be able to detect temperatures in all directions. In this way, in the case of an omnidirectional detection type thermistor, if there is a gap around the thermistor, the temperature of the air is detected, and the detection accuracy is particularly likely to decrease. According to the present embodiment, the thermistor 2 is brought into close contact with the can body 2 in the vicinity region C ′ of the pasting region C as described above, so that an air layer that can be generated around the thermistor can be eliminated as much as possible. As a result, the detection accuracy can be further improved.

  In the present embodiment, as described with reference to FIG. 3, the vacuum heat insulating material piece 52 is manufactured by bending a flat heat insulating material base material 52 'into a substantially arcuate cross section. In this case, even if the vacuum heat insulating material piece 52 is disposed so as to cover the outer peripheral portion of the can body 2 in the bent state, on the material filled with glass wool as a core material as described above, There may be a case where a restoring force is applied to return to the flat plate shape. When such a restoring force is applied, a gap S between the vacuum heat insulating material piece 52 and the outer peripheral portion of the can body 2 as described with reference to FIGS. 7A and 7B is particularly generated. Since it tends to be easy, the adhesion degree of the thermistor 29 to the can body 2 is lowered, and the detection accuracy is likely to be lowered. Therefore, in such a case, the effect of improving the detection accuracy is particularly increased by securely bringing the thermistor 29 into close contact with the can body 2 by the above-described method of the present embodiment.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not change the summary of invention. For example, as shown in FIG. 10 corresponding to FIG. 5 (b), the thermistor 29 has a radially inner surface of a sticking region C (not a neighboring region C ′) by the adhesive tape 59 of the vacuum heat insulating material piece 52. It may be provided so as to be sandwiched between the radially outer surface of the can body 2. In this case, since the thermistor 29 is provided directly behind the position C where the adhesive tape 59 is applied, the thermistor 29 can be more closely attached to the can body 2 and the detection accuracy can be further improved. is there.

  Further, as shown in FIG. 11 corresponding to FIG. 5 (b), the thermistor 29 may be directly pressed against the can body 2 by the vacuum heat insulating material piece 52 without using the metal tape 58. Even in this case, by providing the thermistor 29 so as to be sandwiched between the vicinity region C ′ (or the pasting region C) of the adhesive tape 59 in which the gap S hardly occurs and the outer surface of the can body 2, The effect of improving the detection accuracy of the thermistor 29 can be obtained.

  Moreover, in the said embodiment, the adhesive tape 59 has an adhesive surface only in one surface (back surface), and the adhesive surface is the diameter of the can body 2 from the radial direction outer surface of the said edge part 52S of the vacuum heat insulating material piece 52. Although it stuck on the direction outer side surface, it is not restricted to this. That is, instead of the adhesive tape 59, a so-called double-sided tape having adhesive surfaces on both sides is used, and the radially inner surface of the edge portion 52S of the vacuum heat insulating material piece 52 is adhered to the radially outer surface of the can body 2. Also good. Also in this case, the thermistor is provided between the radially inner surface of the vacuum heat insulating piece 52 and the vicinity thereof in the region where the double-sided tape is applied (the region where the double-sided tape is applied) and the radially outer surface of the can body 2. If 29 is provided, the same effect as that of the above embodiment can be obtained.

  Moreover, although the said embodiment demonstrated as an example the case where a heating means was comprised with the heat pump unit 3, it is not restricted to this. That is, a hot water heater using solar heat, gas or liquid fuel, an electric water heater using an electric heater, a waste heat recovery device of a cogeneration system, or the like may be used as the heating means.

1 Hot water storage tank unit (hot water storage water heater)
2 Can body 3 Heat pump unit (heating means)
4 Hot-water tap 6 Bathtub 12 Hot water pipe 13 Water supply pipe 29 Thermistor (temperature detector)
52 Vacuum insulation material 59 Adhesive tape
100 Hot water storage water heater

Claims (5)

A substantially cylindrical can that stores hot water heated by a heating means;
A vacuum heat insulating material piece having a substantially arc-shaped cross section provided so as to cover at least a part of the radially outer periphery of the can body;
In a hot water storage type hot water supply machine having an edge part of the vacuum heat insulating material piece and a sticking tool to be attached to a radially outer surface of the can body,
A temperature detection tool is provided so as to be sandwiched between a radially inner surface of a sticking region of the sticking tool or a region in the vicinity thereof in the vacuum heat insulating material piece and the radially outer surface of the can body. Hot water storage water heater. The said sticking tool is an adhesive tape which affixed the adhesive surface over the said radial direction outer surface of the said can body from the radial direction outer surface of the edge of the said vacuum heat insulating material piece. Hot water storage water heater. The hot water storage type hot water heater according to claim 1 or 2, wherein the temperature detector is a thermistor capable of detecting the temperature in all directions.   The hot water storage system according to any one of claims 1 to 3, wherein the vacuum heat insulating material piece is formed by bending a flat heat insulating material base material into a substantially circular arc cross section. Water heater. The temperature detection tool is provided so as to be sandwiched between the radially inner surface of the application area of the application tool and the radially outer surface of the can body in the vacuum heat insulating material piece. The hot water storage type water heater according to any one of claims 1 to 4, wherein the hot water storage type water heater is provided.

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