JP6922862B2 - Hot water storage type water heater - Google Patents

Description

The present invention relates to a hot water storage type water heater.

Hot water storage type water heaters that store hot water heated by a heating means such as a heat pump in a hot water storage tank and use the hot water taken out from the hot water storage tank to supply hot water to hot water supply destinations such as bathtubs, showers, kitchen and washroom faucets are widely used. Has been done. In order to suppress heat dissipation loss from the hot water storage tank, a foam-molded heat insulating material such as polystyrene foam or polyurethane foam is arranged around the hot water storage tank.

Inside the hot water storage type water heater, for example, a pump for moving the hot water in the hot water storage tank to the heat source machine, a control board for operating electric devices such as a valve for changing the hot water path, a pump and a valve. A lead wire for connecting an electric device such as a control board and a control board is provided. The lead wire connecting each electric device and the control board usually has a relay portion, and a place for fixing the relay portion is required. In addition, it is necessary to have a waterproof structure so that water does not splash on the relay part. In the conventional specifications, a sheet metal for the relay part, a clamper for fixing the lead wire, and a thin sheet-like film as a drip-proof cover for preventing water splashing are required. When there are a plurality of relay units, the number of clampers also increases, and as the number of parts increases, the assembly work efficiency decreases.

On the other hand, as a plan to simplify the structure of the relay portion, it is conceivable to form a structure for clamping the relay portion on the foam-molded heat insulating material. The relay part of the lead wire is clamped to the relay clamp structure part molded into the foam-molded heat insulating material, and a protective sheet or the like is arranged on the relay part so as not to be splashed with water or the like. It is generally considered that tape or the like is used to fix the protective sheet, but it is necessary to determine the method of attaching the tape during assembly or product maintenance, the rules regarding adhesion, the attachment position, etc., and the work is very difficult. It can be complicated.

In Patent Document 1, in order to stretch and support a sheet-shaped film without using an adhesive such as tape, a holding jig that sandwiches and holds the film from the front and back sides of the film, and irregularities that fit each other into the film. A structure for providing a portion is disclosed.

Japanese Unexamined Patent Publication No. 8-201920

The film support structure of Patent Document 1 requires that both the film and the holding jig are provided with uneven portions that are fitted to each other, and both of them require special processing.

The present invention has been made to solve the above-mentioned problems, and a protective sheet covering a component holding portion that holds a component can be used as a heat insulating material with a simple structure without using an adhesive such as an adhesive tape. The purpose is to provide a hot water storage type water heater that can be installed.

The hot water storage type water heater according to the present invention includes a hot water storage tank, a heat insulating material covering the hot water storage tank, and a protective sheet, and the heat insulating materials include a first groove, a second groove, a first groove, and a second groove. The protective sheet is provided at the first end portion having a concavo-convex edge and the first end portion which is bent in a V shape. A second that connects to the second end via a first insertion part that is connected, a second end that is on the opposite side of the first end and has a concave-convex edge, and a second bend that is bent in a V shape. A protective sheet is attached to the heat insulating material by providing an insertion portion, the first end portion and the first insertion portion are inserted into the first groove, and the second end portion and the second insertion portion are inserted into the second groove. Is what you are doing.

According to the present invention, a protective sheet that covers a component holding portion that holds a component can be attached to a heat insulating material with a simple structure without using an adhesive such as an adhesive tape.

It is a perspective view which shows the hot water storage type water heater according to Embodiment 1. FIG. It is a perspective view which shows the groove structure part provided with the hot water storage type water heater according to Embodiment 1. FIG. It is a development view of the protection sheet provided in the hot water storage type water heater according to Embodiment 1. FIG. It is a perspective view which shows the state before attaching the protective sheet to the groove structure part in Embodiment 1. FIG. It is a perspective view which shows the state which attached the protective sheet to the groove structure part in Embodiment 1. FIG.

Hereinafter, embodiments will be described with reference to the drawings. Common or corresponding elements in the drawings are designated by the same reference numerals to simplify or omit duplicate description.

Embodiment 1.
FIG. 1 is a perspective view showing a hot water storage type water heater 100 according to the first embodiment. As shown in FIG. 1, the hot water storage type water heater 100 of the present embodiment includes a hot water storage tank 200 having a substantially cylindrical shape, upper heat insulating materials 300, 301, 302, lower heat insulating material 400, and a front heat insulating material. It includes 500 and a back heat insulating material 600. The hot water storage type water heater 100 further includes a housing serving as an outer case, electric devices such as pumps and valves, and a control board for controlling the electric devices, but illustration and description thereof are omitted in the present disclosure. do. The hot water storage type water heater 100 is installed in a posture in which the axial direction of the hot water storage tank 200 is parallel to the vertical line. In the following description, the positional relationship of each part is specified based on the state in which the hot water storage type water heater 100 is installed in such a posture.

The upper heat insulating materials 300, 301, 302 cover the upper end plate portion of the hot water storage tank 200. The lower heat insulating material 400 covers the lower end plate portion of the hot water storage tank 200. The front heat insulating material 500 covers the front surface of the body of the hot water storage tank 200. The back heat insulating material 600 covers the back surface of the body of the hot water storage tank 200.

In the illustrated configuration, the internal heat insulating materials 700 and 701 and the vacuum heat insulating material 800 are further arranged between the hot water storage tank 200 and the front heat insulating material 500. The upper heat insulating materials 300, 301, 302, the lower heat insulating material 400, the front heat insulating material 500, the back heat insulating material 600, and the internal heat insulating materials 700, 701 are foam-molded heat insulating materials made of foamed plastic such as foamed polystyrene or foamed polyurethane. Corresponds to lumber.

The front heat insulating material 500 has a groove structure portion 501 for holding a component. The groove structure portion 501 is formed on the outer surface of the front heat insulating material 500. In the present embodiment, an example in which the groove structure portion 501 is formed on the front heat insulating material 500 will be described, but a similar groove structure portion may be formed on another heat insulating material.

FIG. 2 is a perspective view showing a groove structure portion 501 included in the hot water storage type water heater 100 according to the first embodiment. As shown in FIG. 2, the groove structure portion 501 includes a first groove 502, a component holding portion 503, and a second groove 504. The component holding portion 503 has a recess 503a and grooves 503b and 503c on both sides of the recess 503a. An electric component (not shown) such as a lead wire relay connector is arranged in the component holding unit 503. For example, the main body of the relay connector is arranged in the recess 503a, and the lead wires connected to the main body of the relay connector are arranged in the grooves 503b and 503c. In that way, the component holding unit 503 can hold an electric component such as a relay connector. In the present embodiment, the electric parts can be held by the parts holding portion 503 formed in the heat insulating material (front heat insulating material 500) that covers the hot water storage tank 200, so that the structure for holding the electric parts is simplified. can do.

The component holding portion 503 is located between the first groove 502 and the second groove 504. In the present embodiment, four component holding portions 503 are formed between the first groove 502 and the second groove 504. In this way, a plurality of component holding portions 503 may be formed between the first groove 502 and the second groove 504, or only one component holding portion 503 may be formed.

The position of the first groove 502 in the vertical direction is higher than that of the second groove 504. The longitudinal direction of the first groove 502 and the second groove 504 is along the horizontal direction. Not limited to such a configuration, for example, the longitudinal direction of the first groove 502 and the second groove 504 may be along the vertical direction.

The groove structure portion 501 is formed so as to form a plateau that rises from the surface of the other portion of the front heat insulating material 500. The groove structure 501 has a front surface 501a, a side surface 501b, an upper inclined surface 501c, and a lower inclined surface 501d. The first groove 502, the component holding portion 503, and the second groove 504 each form a recess recessed from the front surface 501a. The side surface 501b is a surface perpendicular to the front surface 501a and along the vertical direction. The first groove 502, the component holding portion 503, and the second groove 504 are each formed as a groove penetrating from one side surface 501b to the opposite side surface 501b. The upper inclined surface 501c is above the first groove 502 and forms an inclined surface with respect to the front surface 501a. The lower inclined surface 501d is below the second groove 504 and forms an inclined surface with respect to the front surface 501a. Instead of the illustrated configuration, the groove structure 501 may not have an inclined surface such as the upper inclined surface 501c and the lower inclined surface 501d.

The first groove 502 has both side grooves 502a and 502b and a central groove 502c. The central groove 502c is located in the center of the first groove 502 in the longitudinal direction. The gutters 502a and 502b are on both sides of the central sulcus 502c. With respect to the vertical position, the gutters 502a and 502b are lower than the central sulcus 502c.

The second groove 504 has both side grooves 504a and 504b and a central groove 504c. The central groove 504c is located in the center of the second groove 504 in the longitudinal direction. The gutters 504a and 504b are on both sides of the central sulcus 504c. With respect to the vertical position, the gutters 504a and 504b are lower than the central sulcus 504c.

FIG. 3 is a developed view of the protective sheet 510 included in the hot water storage type water heater 100 according to the first embodiment. The protective sheet 510 shown in FIG. 3 is made of a thin sheet-like film. The protective sheet 510 is attached to the groove structure 501 of the front heat insulating material 500 so as to cover the component holding portion 503. Inside the hot water storage type water heater 100, water may be generated due to, for example, dew condensation, and such water may fall on the groove structure 501. In the present embodiment, the protective sheet 510 covers the component holding portion 503, so that even if water falls on the groove structure portion 501, the electric components held by the component holding portion 503 are reliably protected from water. can do.

The protective sheet 510 includes a rectangular main body portion 511, a first end portion 512, a first insertion portion 513, a second end portion 514, and a second insertion portion 515. The main body portion 511 is a portion for covering the component holding portion 503. The first end portion 512 has a concavo-convex edge. The first insertion portion 513 is connected to the first end portion 512 via a first bending portion 525a that can be bent in a V shape. The first insertion portion 513 is connected to the main body portion 511 via a bendable portion 525b. The second end 514 is on the opposite side of the first end 512. The second end 514 has a concave-convex edge. The second insertion portion 515 is connected to the second end portion 514 via a second bending portion 526a that can be bent in a V shape. The second insertion portion 515 is connected to the main body portion 511 via a bendable portion 526b. The main body portion 511 of the protective sheet 510 of the present embodiment has a shape close to a rectangle as a whole, and the first end portion 512 and the first insertion portion 513 are formed along one short side of the rectangle. The second end portion 514 and the second insertion portion 515 are formed along the other short side of the rectangle.

FIG. 4 is a perspective view showing a state before the protective sheet 510 is attached to the groove structure portion 501 in the first embodiment. As shown in FIG. 4, when attaching the protective sheet 510, the following is performed. The first bent portion 525a is bent into a V shape. Bend the bent portion 525b to about 90 °. As a result, the first end portion 512 and the first insertion portion 513 project in the direction perpendicular to the main body portion 511 with the first bent portion 525a as the tip end. The protruding first end portion 512 and the first insertion portion 513 are inserted into the first groove 502. The second bent portion 526a is bent into a V shape. Bend the bent portion 526b to about 90 °. As a result, the second end portion 514 and the second insertion portion 515 project in the direction perpendicular to the main body portion 511 with the second bent portion 526a as the tip end. The protruding second end portion 514 and the second insertion portion 515 are inserted into the second groove 504.

FIG. 5 is a perspective view showing a state in which the protective sheet 510 is attached to the groove structure portion 501 in the first embodiment. As shown in FIG. 5, the first end portion 512 and the first insertion portion 513 are inserted into the first groove 502, and the second end portion 514 and the second insertion portion 515 are inserted into the second groove 504 to protect them. The sheet 510 can be attached to the groove structure portion 501 of the front heat insulating material 500.

The first end portion 512 and the first insertion portion 513 are pressed against the inner wall of the first groove 502 by the elastic force of the first bent portion 525a bent in a V shape to return to the original shape. As a result, the frictional force between the first end portion 512 and the first insertion portion 513 and the inner wall of the first groove 502 becomes large, and the first end portion 512 and the first insertion portion 513 come out of the first groove 502. It becomes difficult. Further, the concave-convex pointed portion of the first end portion 512 bites into the inner wall of the first groove 502, so that the first end portion 512 and the first insertion portion 513 are more difficult to come off from the first groove 502.

The second end portion 514 and the second insertion portion 515 are pressed against the inner wall of the second groove 504 by the elastic force of the second bent portion 526a bent in a V shape to return to the original shape. As a result, the frictional force between the second end portion 514 and the second insertion portion 515 and the inner wall of the second groove 504 becomes large, and the second end portion 514 and the second insertion portion 515 come out of the second groove 504. It becomes difficult. Further, the concave-convex pointed portion of the second end portion 514 bites into the inner wall of the second groove 504, so that the second end portion 514 and the second insertion portion 515 are more difficult to come off from the second groove 504.

As described above, in the present embodiment, the protective sheet 510 can be attached to the groove structure portion 501 of the front heat insulating material 500 without using an adhesive such as an adhesive tape. Therefore, the work of attaching / detaching the protective sheet 510 at the time of manufacturing or maintenance of the hot water storage type water heater 100 can be easily performed, and the cost of parts can be reduced.

At least a part of the protective sheet 510 may be transparent or translucent. For example, at least a part of the main body portion 511 covering the component holding portion 503 may be transparent or translucent. By doing so, the parts held by the parts holding portion 503 can be visually confirmed from the outside of the protective sheet 510. Therefore, it is possible to notice an incorrect arrangement of parts even in the assembly process, and the maintenance worker can also check the inside of the protective sheet 510, so that the work efficiency can be improved.

When removing the protective sheet 510 at least partially from the state shown in FIG. 5, it is desirable to do as follows. First, the second end portion 514 and the second insertion portion 515 are moved along the longitudinal direction of the second groove 504. When it is moved in this way, the concave-convex pointed portion of the second end portion 514 is less likely to bite into the inner wall of the second groove 504. As a result, the second end portion 514 and the second insertion portion 515 can be removed from the second groove 504 with a relatively small force. After that, the protective sheet 510 can be rolled up with the first end portion 512 as a fulcrum.

“First direction” in FIG. 3 indicates an example of a direction in which the protective sheet 510 is moved as described above when the protective sheet 510 is removed. That is, the first direction is a direction parallel to the longitudinal direction of the first groove 502 or the second groove 504. The "second direction" in FIG. 3 is a direction parallel to the longitudinal direction of the first groove 502 or the second groove 504, and is a direction opposite to the first direction.

The uneven shape of the second end portion 514 is a saw blade shape. The saw blade-shaped pointed portion of the second end portion 514 easily bites into the inner wall of the second groove 504 when moved in the second direction, and bites into the inner wall of the second groove 504 when moved in the first direction. It becomes difficult. Therefore, the resistance force when the second end portion 514 is moved in the second direction is larger than the resistance force when the second end portion 514 is moved in the first direction. As a result, the following effects can be obtained. When removing the protective sheet 510, the protective sheet 510 can be removed with a relatively small force by moving the second end portion 514 in the first direction. Further, the resistance force when the second end portion 514 is moved in the second direction becomes larger than the resistance force when the second end portion 514 is moved in the first direction, so that the work of removing the protective sheet 510 is performed. It is possible to more reliably prevent the protective sheet 510 from coming off at other times.

In the present embodiment, a handle 524 serving as a handle for removing the protective sheet 510 is integrally formed with the protective sheet 510. The handle 524 is formed at a position adjacent to the second end portion 514 and the second insertion portion 515. The second end portion 514 and the second insertion portion 515 and the handle 524 are separated by a notch line 516. The handle 524 is provided at a position corresponding to a corner portion of the main body portion 511. The handle 524 is arranged so as to be adjacent to the second end portion 514 and the second insertion portion 515 on the side in the first direction. In the present embodiment, when removing the protective sheet 510, the operator can easily move the protective sheet 510 in the first direction by holding the handle 524. As a result, the work of removing the protective sheet 510 becomes easier.

The handle 524 may have a different color from the portion of the protective sheet 510 other than the handle 524. By doing so, the operator can more easily recognize the position of the handle 524.

The attachment / detachment direction when attaching / detaching the protective sheet 510 may be indicated on the protective sheet 510. For example, a display indicating the first direction, which is the direction in which the resistance force when the second end portion 514 is moved, may be formed near the handle 524 of the protective sheet 510. Further, a display indicating the vertical direction of the protective sheet 510 may be formed on the protective sheet 510. By providing these indications, the operator can more easily attach / detach the protective sheet 510.

The uneven shape of the second end portion 514 is not limited to the saw blade shape. When the longitudinal direction of the second end portion 514 is the left-right direction, if the uneven shape of the second end portion 514 is asymmetrical, even if the shape is other than the saw blade shape, it is moved in the first direction. It is possible to make the resistance force at the time different from the resistance force at the time of moving in the second direction.

The uneven shape of the first end portion 512 is the shape of a chevron blade. That is, when the longitudinal direction of the first end portion 512 is the left-right direction, the uneven shape of the first end portion 512 is symmetrical. Therefore, the resistance force when the first end portion 512 is moved in the first direction is equal to the resistance force when the first end portion 512 is moved in the second direction.

Instead of the configuration shown in the figure, the resistance force when the first end portion 512 is moved in the first direction is smaller than the resistance force when the first end portion 512 is moved in the second direction. The uneven shape of the end portion 512 may be formed. In that case, the direction in which the resistance force when the first end portion 512 is moved decreases and the direction in which the resistance force when the second end portion 514 is moved decreases are in the same direction (first direction). Therefore, the work of removing the protective sheet 510 becomes easier.

Further, contrary to the present embodiment, the resistance force when the first end portion 512 is moved in the first direction and the resistance force when the first end portion 512 is moved in the second direction are different in magnitude. So that the resistance force when the second end portion 514 is moved in the first direction and the resistance force when the first end portion 512 is moved in the second direction are equal to each other. The concave-convex shape of the portion 512 and the second end portion 514 may be formed. Even in that case, an effect similar to that of the present embodiment can be obtained.

As shown in FIG. 3, the uneven shape of the first end portion 512 is formed so as not to reach the first bent portion 525a. Further, the uneven shape of the second end portion 514 is formed so as not to reach the second bent portion 526a. As a result, sufficient strength can be imparted to the first end portion 512 and the second end portion 514, so that it is possible to more reliably prevent the protective sheet 510 from coming off at times other than the work of removing the protective sheet 510. ..

The first end portion 512 has both side end portions 520 and a central end portion 521. The bilateral end portions 520 are on both sides of the central end portion 521. The central end portion 521 is inserted into the central groove 502c of the first groove 502. The both side end portions 520 are inserted into the both side grooves 502a and 502b of the first groove 502. The distance from the first bent portion 525a to the tip of the concave-convex sharp portion of the central end portion 521 is smaller than the distance from the first bent portion 525a to the tip of the concave-convex sharp portion of both side end portions 520. As a result, the following effects can be obtained. The central end portion 521 may be more difficult to insert into the depth of the first groove 502 than the both side end portions 520. Even when the insertion depth of the central end portion 521 with respect to the first groove 502 is relatively shallow, the distance from the first bent portion 525a to the tip of the concave-convex pointed portion of the central end portion 521 is relatively small. The uneven shape of the end portion 521 can be reliably accommodated in the first groove 502. As a result, it is possible to ensure that the concave-convex pointed portion of the central end portion 521 bites into the inner wall of the first groove 502 more reliably.

The second end 514 has both side ends 522 and a central end 523. Both side ends 522 are on both sides of the central end 523. The central end portion 523 is inserted into the central groove 504c of the second groove 504. The both side end portions 522 are inserted into the both side grooves 504a and 504b of the second groove 504. The distance from the second bent portion 526a to the tip of the concave-convex sharp portion of the central end portion 523 is smaller than the distance from the second bent portion 526a to the tip of the concave-convex sharp portion of both side end portions 522. As a result, the following effects can be obtained. The central end portion 523 may be more difficult to insert to the depth of the second groove 504 than the both side end portions 522. Even when the insertion depth of the central end portion 523 with respect to the second groove 504 is relatively shallow, the distance from the second bent portion 526a to the tip of the concave-convex pointed portion of the central end portion 523 is relatively small, so that the center The uneven shape of the end portion 523 can be reliably accommodated in the second groove 504. As a result, it is possible to ensure that the concave-convex pointed portion of the central end portion 523 bites into the inner wall of the second groove 504 more reliably.

As shown in FIG. 4, the first bent portion 525a is bent so that the first end portion 512 is located below the first insertion portion 513. As a result, the following effects can be obtained. Since the first end portion 512 is located below the first insertion portion 513, the central end portion 521 can easily bite into the central groove 502c and can be surely bitten into the inner wall. On the contrary, when the first end portion 512 is bent so as to be located above the first insertion portion 513, the central end portion 521 may not easily bite into the upper side of the central groove 502c.

Further, the second bent portion 526a is bent so that the second end portion 514 is located below the second insertion portion 515. As a result, the following effects can be obtained. Since the second end portion 514 is located below the second insertion portion 515, the second end portion 514 is easily pressed against the inner wall of the second groove 504 by gravity. As a result, it is possible to ensure that the concave-convex pointed portion of the second end portion 514 bites into the inner wall of the second groove 504 more reliably.

100 hot water storage type water heater, 200 hot water storage tank, 300, 301, 302 upper heat insulating material, 400 lower heat insulating material, 500 front heat insulating material, 501 groove structure, 501a front, 501b side, 501c upper inclined surface, 501d lower inclined surface, 502 1st groove, 502a, 502b both sides groove, 502c central groove, 503 parts holding part, 503a recess, 503b, 503c groove part, 504 second groove, 504a, 504b both sides groove, 504c central groove, 510 protective sheet, 511 main body , 512 1st end, 513 1st insertion, 514 2nd end, 515 2nd insertion, 516 cut line, 520 both sides end, 521 center end, 522 both sides end, 523 center end, 524 Handle, 525a 1st bend, 525b bend, 526a 2nd bend, 526b bend, 600 back insulation, 700, 701 internal insulation, 800 vacuum insulation

Claims (11)

Hot water storage tank and
The heat insulating material that covers the hot water storage tank and
Equipped with a protective sheet
The heat insulating material is
The first groove and
The second groove and
It is located between the first groove and the second groove and is provided with a component holding portion for holding the component.
The protective sheet is
A first end with an uneven edge and
A first insertion portion connected to the first end portion via a first bending portion that is bent in a V shape, and a first insertion portion.
The second end, which is on the opposite side of the first end and has an uneven edge,
It is provided with a second insertion portion connected to the second end portion via a second bending portion that is bent in a V shape.
The protective sheet is inserted into the heat insulating material by inserting the first end portion and the first insertion portion into the first groove and inserting the second end portion and the second insertion portion into the second groove. A hot water storage type water heater that is installed. The uneven shape of at least one of the first end portion and the second end portion has the first end portion or the second end portion in the first direction which is the longitudinal direction of the first groove or the second groove. A shape in which the resistance force when moved and the resistance force when the first end portion or the second end portion is moved in the second direction, which is the longitudinal direction opposite to the first direction, have different magnitudes. The hot water storage type water heater according to claim 1. The hot water storage type water heater according to claim 2, wherein the direction in which the resistance becomes smaller is indicated on the protective sheet. The uneven shape of both the first end portion and the second end portion has a magnitude different from the resistance force when moved in the first direction and the resistance force when moved in the second direction. Has a shape that
2. The hot water storage type water heater described. The hot water storage type water heater according to any one of claims 1 to 4, wherein a handle serving as a handle for removing the protective sheet from the heat insulating material is integrally formed with the protective sheet. The hot water storage type water heater according to claim 5, wherein the handle has a color different from that of the portion of the protective sheet other than the handle. The hot water storage type water heater according to any one of claims 1 to 6, wherein at least a part of the protective sheet is transparent or translucent. The hot water storage type water heater according to any one of claims 1 to 7, wherein the attachment / detachment direction of the protective sheet to the heat insulating material is indicated on the protective sheet. The position of the first groove in the vertical direction is higher than that of the second groove.
The hot water storage type water heater according to any one of claims 1 to 8, wherein the first bent portion is bent so that the first end portion is located below the first insertion portion. The position of the first groove in the vertical direction is higher than that of the second groove.
The first groove has a central groove located in the center in the longitudinal direction and a gutter on both sides of the central groove whose vertical position is lower than that of the central groove.
The first end portion has a central end portion to be inserted into the central groove and both side end portions to be inserted into the both side grooves.
Claims 1 to 9 in which the distance from the first bent portion to the tip of the concave-convex shape at the central end is smaller than the distance from the first bent portion to the tip of the concave-convex shape at both end portions. The hot water storage type water heater described in any one of the above. The hot water storage type water heater according to any one of claims 1 to 10, wherein the uneven shape is formed so as not to reach the first bent portion and the second bent portion.

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