JP2019100670A - Storage type electric water heater - Google Patents

Abstract

To provide a storage type electric water heater improved in assemblability by simplifying assembling of a tapping member of the storage type electric water heater.SOLUTION: In a storage type water heater discharging stored hot water, includes a hot water storage tank provided with a heater, a water supply pipe for supplying water to the hot water storage tank, a tapping pipe for discharging hot water from the hot water storage tank, a tapping member connected to the tapping pipe, and a fixing member having an opening for the tapping member to which the tapping member is inserted, and preventing separation of the tapping member from the tapping pipe, an axis of the tapping member in a water passing direction is different from an axis in the water passing direction of the tapping pipe in a state of connecting the tapping member to the tapping pipe, and the tapping member is constituted so that a position in a temporarily fixed state in which it is inserted to the tapping pipe, and a position in a fixed state in which it is connected to the tapping pipe, are different from each other, and is inserted to the opening for the tapping member only in the fixed state.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a hot water storage type electric water heater that discharges stored hot water.

  As a hot water storage type electric water heater for supplying appropriate hot water to a faucet installed in a hand-washing machine etc., the thing described in the following patent documents 1 is proposed. In the hot water storage type electric water heater described in Patent Document 1 below, water supplied from a water supply source is once stored in a hot water storage tank. In the hot water storage tank, the supplied water is heated by the electric heater, and the heated water passes through the outlet and the water mixed at an appropriate temperature by the water mixing means is discharged from the water faucet.

JP 2008-57928 A

  The hot water storage type electric water heater described in the patent document 1 is configured such that the hot water discharge member is sandwiched between the upper surface casing and the upper surface plate and a screw is inserted and fixed in a screw hole provided in the upper surface casing. As described above, the assembling operation for fixing the tapping member using screws is complicated and the assembling property is reduced.

  The present invention has been made in view of such problems, and an object thereof is to provide a hot water storage type electric water heater which facilitates the assembly of the hot water discharge member of the hot water storage type electric water heater and improves the assemblability. .

  In order to solve the above problems, a storage-type electric water heater according to the present invention is a storage-type electric water heater that discharges stored hot water, and supplies water to the hot water storage tank provided with a heater, The hot water discharge pipe for discharging hot water from the hot water storage tank, the hot water discharge member connected to the hot water discharge pipe, and the hot water discharge member opening into which the hot water discharge member is inserted, the hot water discharge member from the hot water discharge pipe And a fixing member for preventing dislodging, wherein the shaft of the tapping member in the water flow direction is different from the axis in the water flow direction of the tapping tube in a state where the water tapping member is connected to the tapping tube. The tapping member is configured to be different from the position in the temporarily fixed state where it is inserted into the tapping pipe and the position in the fixing state connected to the tapping pipe; Department Characterized in that it is configured to be inserted into use opening.

  In the storage-type electric water heater of the first invention, the shaft of the hot water discharge pipe and the shaft of the hot water discharge member are offset, and the hot water discharge member is configured to be different in the temporarily fixed state and the fixed state, and fixed only in the fixed state. By being configured to be inserted into the hot water discharge member opening of the member, it is not necessary to connect the hot water discharge member to the hot water discharge pipe with a screw, and the assemblability can be improved. Furthermore, with the above-described structure, the hot water discharge member can not be inserted into the hot water discharge member opening of the fixing member in the temporarily fixed state at the time of assembly, so that the completion of the assembly operation in the incompletely assembled state can be suppressed.

  In the water storage type electric water heater according to the second aspect of the invention, the hot water discharge member extends from the base to one side and is inserted into the hot water discharge pipe inserted into the hot water discharge pipe, and a hot water outlet for discharging hot water from the base to the other side And a protrusion protruding from the base to the other side, and the fixing member has a protrusion opening into which the protrusion is inserted.

  The storage-type electric water heater according to the second aspect of the present invention can further suppress the completion of the assembly operation in an incomplete state by further having a projection.

  In the water storage type electric water heater according to the third aspect of the present invention, the tapping member has a convex portion extending in the vertical direction with respect to one side, and the tapping pipe has a part of the end on the most downstream side passing therethrough. It has a water flow direction notch cut out in the water direction, and a vertical direction notch cut out in a direction perpendicular to the water flow direction, which is continuous with the water flow direction notch, The tapping member is fixed to the tapping tube by inserting the convex portion from the water flow direction notch portion and rotating the tapping member to move the convex portion in the vertical direction notch portion. It is characterized by

  Since the storage water type electric water heater of the third invention can be fixed only by rotating the hot water discharge member with respect to the hot water discharge pipe, complicated work is eliminated at the time of assembly, and the assemblability can be improved.

  The hot water storage type electric water heater according to the fourth invention is characterized in that the hot water discharge member has a thread portion for connecting a hose connected to the hot water outlet.

  In the water storage type electric water heater of the fourth invention, it is necessary to connect the water storage type electric water heater and the water faucet, and they are connected by a hose. At the time of construction to connect the water storage type electric water heater and the faucet, since a force is applied to the outlet, it is preferable to fix with a screw in consideration of prevention of the hose from coming off. When rotating the hose and screwing with the screw thread part, a rotational force is generated, and there is a risk that the tapping member rotates with respect to the tapping pipe, but the axes of the tapping pipe and the tapping member are offset. Therefore, the hose can also be strongly connected to the outlet port without the outlet member rotating and the fixed state being lowered.

  According to the present invention, it is possible to provide a hot water storage type electric water heater which facilitates the assembly of the hot water discharge member of the hot water storage type electric water heater and improves the assemblability.

It is a schematic perspective view of a hot water storage type electric water heater concerning an embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the hot water storage type electric water heater concerning embodiment of this invention. It is an internal block diagram of the hot water storage type electric water heater concerning embodiment of this invention. It is a disassembled perspective view of the hot water storage type electric water heater concerning embodiment of this invention. It is a disassembled front view of a hot water storage type electric water heater concerning an embodiment of the present invention. It is a perspective view of the hot water discharge member of the hot water storage type electric water heater concerning embodiment of this invention. It is a perspective view of the outlet tube of the hot water storage type electric water heater concerning embodiment of this invention. It is a perspective view in the state where the hot water discharge member was removed from the hot water discharge pipe of the hot water storage type electric water heater concerning an embodiment of the present invention. It is the perspective view and top view of the state in which the hot water discharge member of the hot water storage type electric water heater concerning embodiment of this invention was inserted in the hot water discharge pipe. It is the perspective view and top view of the state in which the hot water discharge member of the hot water storage type electric water heater concerning embodiment of this invention was connected to the hot water discharge pipe completed. It is a side view in the state where the outlet tube and outlet member of the hot water storage type electric water heater according to the embodiment of the present invention are connected. It is a top view which shows the fixing member when the hot water discharge member of the hot water storage type electric water heater concerning embodiment of this invention is fixing state. It is a top view which shows the fixing member at the time of the tapping member of the hot water storage type electric water heater concerning embodiment of this invention being temporarily fixed.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. In order to facilitate understanding of the description, in the drawings, the same components are denoted by the same reference numerals as much as possible, and redundant description will be omitted. Note that the present invention is not limited by the embodiments described below.

  This hot water storage type electric water heater will be described with reference to FIG. FIG. 1 is a schematic perspective view of a hot water storage type electric water heater 1 according to an embodiment of the present invention. As shown in FIG. 1, the hot water storage type electric water heater 1 comprises an electric water heater main body 2, a switch section 3 for operating the electric water heater main body, and a case 4 forming an outer shell of the hot water storage type electric water heater 1. Have.

  The switch 3 is provided with a power button 3 a and the like for turning on and off the power supply of the hot water storage type electric water heater 1. Although not shown, in addition to the power button 3a, a start button for starting water supply to the electric water heater main body 2 may be provided.

  Next, the configuration of the hot water storage type electric water heater 1 will be described with reference to FIG. FIG. 2: is a schematic block diagram of the hot water storage type electric water heater 1 concerning embodiment of this invention.

  As shown in FIG. 2, inside the electric water heater main body 2, the water supply pipe 5, the check valve 6, the pressure reducing valve 7, the hot water storage tank 8, the electric heater 9, the hot and cold water mixing means 10, the hot water pipe 11, the hot water pipe A member 12, an air passage 13, an intake operation unit 14, a discharge pipe 16 having a discharge port 15, an open / close valve 17 for opening and closing the discharge pipe 16, an operation unit 18 for opening and closing the open / close valve 17 and a control unit 19 are provided. .

As shown in FIG. 2, the upstream side of the water supply pipe 5 is connected to a water supply source (not shown) such as a water pipe so that water supplied from this water supply source (not shown) flows. It has become. Further, as shown in FIG. 2, the water supply pipe 5 is supplied with water from the water supply source to the check valve portion 6 that prevents the water in the electric water heater main body 2 from flowing backward and the check valve portion 6 downstream. It is connected to the pressure reducing valve 7 for reducing the water pressure and the pressure reducing valve 7, and is configured to branch to the hot water side water passage 20 and the water side water passage 21 at the downstream side of the pressure reducing valve 7.
The hot water side water passage 20 is connected to the hot water storage tank 8. Further, the hot water side water passage 20 is branched upstream to the hot water storage tank 8, one to the hot water storage tank 8 and the other to the discharge pipe 16.
The water side water flow path 21 is branched into the hot water side water flow path 20, and then the hot water from the hot water storage tank 8 and the water from the water side water flow path 21 on the downstream side of the water side water flow 21 It is connected.

Next, as shown in FIG. 2, the hot water storage tank 8 is a tank for storing the water supplied from the hot water side water passage 20.
Further, as shown in FIG. 2, the electric heater 9 is provided in the hot water storage tank 8. The electric heater 9 functions as an electric heating unit that electrically heats the water in the hot water storage tank 8.
Furthermore, the hot and cold water mixing means 10 is provided on the downstream side of the hot water storage tank 8, and the hot water from the hot water storage tank 8 and the water from the water side water flow passage 21 flow in. By opening a water faucet (not shown), the hot water from the hot water storage tank 8 and the water from the water side water flow passage 21 flow in, and after mixing the inflowing hot and cold water, water flows to the hot water discharge pipe 11 side It is configured.
In addition, the hot water discharge pipe 11 is connected with a hot water discharge member 12 for connecting with a faucet (not shown) provided on the downstream side of the electric water heater main body 2 and a hose.

Next, as shown in FIG. 2, for example, when the water in the hot water storage tank 8 is drained during maintenance of the electric water heater main body 2 or the like, the hot water storage tank 8 is operated by operating the intake operation unit 14. Allow for air intake to
Further, the on-off valve 17 is provided in the middle of the discharge pipe 16, and operates the operation unit 18 for operating the on-off valve 17 to supply water from the hot water storage tank 8 or the like from the discharge port 15 via the discharge pipe 16. Can be discharged.

  The control unit 19 is provided in the case 4, and based on the operation of the switch unit 3 or a signal from a faucet (not shown) provided on the downstream side of the electric water heater main body 2, the electric heater 9. It is configured to control power supply to the motor.

  The internal structure of the hot water storage type electric water heater 1 will be described with reference to FIG. FIG. 3 is an internal configuration diagram of the hot water storage type electric water heater 1 according to the embodiment of the present invention.

  As shown in FIG. 3, the hot water storage type electric water heater 1 is provided with a discharge pipe 16, a discharge port 15 and an operation unit 18 below the hot water storage tank 8, and a check valve 6 above the hot water storage tank 8, The pressure reducing valve 7, the hot and cold water mixing means 10, the hot water outlet pipe 11, and the hot water outlet member 12 are disposed.

The electric water heater main body 2 includes a check valve portion 6 and a fixing member 30 for preventing the hot water discharge member 12 from coming off the hot water discharge pipe 11.
The fixing member 30 is fixed by fastening to the check valve portion 6 with a screw, and the hot water discharging member 12 is inserted from above the tapping pipe 11 and then fixed by being pressed from above by the fixing member 30 There is.

  Next, with reference to FIG. 4 and FIG. 5, fixation of the non-return valve part 6 of the hot water storage type electric water heater 1 and the hot water discharge member 12 is demonstrated. FIG. 4 is an exploded perspective view of the hot water storage type electric water heater 1 according to the embodiment of the present invention. FIG. 5 is an exploded front view of the hot water storage type electric water heater 1 according to the embodiment of the present invention.

As shown in FIGS. 4 and 5, the hot water discharge member 12 extends from the base 120 to one side (the side of the hot water discharge pipe 11), and an insertion portion 123 inserted into the hot water discharge pipe 11; Unlike the spout 121 forming the spout, and the spout 121, there is a projection 122 projecting from the base 120 to the other side.
The fixing member 30 includes a spout opening 50 into which the spout 121 is inserted, a projection opening 51 into which the projection 122 is inserted, and a check valve opening 52 into which the check valve 6 is inserted. And a pedestal opening 54 into which a pedestal screw 55 provided on the pedestal 53 for fixing the check valve portion 6 is inserted.

After the hot water outlet member 12 is inserted into the hot water outlet pipe 11, the hot water outlet 121 is inserted into the hot water outlet member opening 50, and the projection 122 is inserted into the projection opening 51.
The check valve portion 6 is inserted into the water supply pipe 5 after being inserted into the pedestal 53 and the reverse valve opening 52. Further, the check valve portion 6 is fixed by screwing the pedestal 53 for fixing the check valve portion 6 and the opening 54 for pedestal of the fixing member 30 by the screw 55 for pedestal.

  Next, the structure of the tapping member 12 will be described with reference to FIG. FIG. 6 is a perspective view of the tapping member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention.

  As shown in FIG. 6, the tapping member 12 includes a base 120, a tapping hole 121, a projection 122, an insertion portion 123, a projection 124, and a screw thread 125. The insertion portion 123 is a portion to be inserted into the tapping pipe 11, and is configured to extend from the base 120 toward one side (the tapping pipe 11 side).

The spout 121 is configured to extend from the base 120 toward the other side, and has a thread portion 125 for connecting to a hose (not shown).
The protrusion 122 is configured to extend from the base 120 toward the other side.

  The convex part 124 is provided in the insertion part 123, and it is comprised so that the insertion part 123 may extend in the orthogonal | vertical direction with respect to one side extended from the base 120. As shown in FIG.

  Next, the structure of the tapping pipe 11 will be described with reference to FIG. FIG. 7 is a perspective view of the tapping pipe 11 of the hot water storage type electric water heater 1 according to the embodiment of the present invention.

  As shown in FIG. 7, the hot water discharge pipe 11 has a water flow direction notch 110 cut along the flow direction of the hot water discharge pipe 11 at the most downstream end of the hot water discharge pipe 11 and a water flow direction notch 110 And a vertical notch 111 cut in a direction perpendicular to the water flow direction.

  Next, the connection between the hot water discharge pipe 11 and the hot water discharge member 12 will be described with reference to FIGS. 8 to 11. FIG. 8 is a perspective view of a state where the hot water discharge member 12 is removed from the hot water discharge pipe 11 of the hot water storage type electric water heater 1 according to the embodiment of the present invention. FIG. 9 is a perspective view and a top view of a state in which the hot water discharge member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention is inserted into the hot water discharge pipe 11. FIG. 10 is a perspective view and a top view of a state in which the hot water discharge member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention is completely connected to the hot water discharge pipe 11. FIG. 11 is a side view of a state in which the hot water discharge pipe 11 and the hot water discharge member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention are completely connected.

  As shown in FIG. 8 and FIG. 9, when inserting the tapping member 12 into the tapping pipe 11, tapping is performed in a state where the water flow direction notch portion 110 of the tapping pipe 11 and the convex portion 124 of the tapping member 12 are aligned. The member 12 is inserted into the tapping pipe 11. In the state where the hot water discharge member 12 is inserted into the hot water discharge pipe 11, the hot water discharge member 12 can move upward, and this state is a temporarily fixed state.

  In order to change from the temporarily fixed state to the fixed state, as shown in FIG. More specifically, the convex portion 124 of the tapping member 12 is rotationally moved along the vertical direction notch 111 cut out in the direction perpendicular to the water direction, continuously with the water direction cut 110. . There is a member forming the outer shell of the tapping pipe 11 at the upper side and the lower side of the vertical direction notch 111, so when the projection 124 is positioned at the vertical direction notch 111, You can regulate movement. As described above, the state in which the vertical movement of the tapping member 12 with respect to the tapping pipe 11 can be restricted is the fixed state.

When the tapping member 12 is rotationally moved from the temporarily fixed state to the fixed state, as shown in FIGS. 9B and 10B, the positions of the tapping hole 121 and the projection 122 are moved.
The change of the positions of the outlet port 121 and the projection 122 in the temporarily fixed state and the fixed state will be described with reference to FIG.

  FIG. 11 is a side view of a state where the hot water discharge pipe 11 and the hot water discharge member 12 are connected. As shown in FIG. 11, the axis of the hot water discharge pipe 11 relative to the most downstream end of the hot water discharge pipe 11 is taken as a hot water discharge pipe axis L1. The axis of the outlet 121 of the outlet member 12 is taken as an outlet axis L2.

In a state where the tapping member 12 is connected to the tapping pipe 11, the tapping member 12 is configured such that the tap pipe axis L1 and the tap axis L2 are shifted from each other. By disposing the hot water discharge pipe axis L1 and the hot water discharge port axis L2 in a shifted position, the hot water discharge member 12 rotates around the hot water discharge pipe axis L1 when moving from the temporarily fixed state to the fixed state. The position of the spout 121 can be changed between the temporarily fixed state and the fixed state.
Similarly, by displacing the projection 122 with the projection axis L3 which is the axis of the projection 122 and the tapping pipe axis L1, the position of the projection 122 can be changed between the temporarily fixed state and the fixed state.

  Next, the fixed state and the temporarily fixed state of the tapping member 12 with respect to the fixed member 30 will be described with reference to FIGS. 12 and 13. FIG. 12 is a top view showing the fixing member 30 when the hot water discharging member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention is in a fixing state. FIG. 13 is a top view showing the fixing member 30 when the hot water discharging member 12 of the hot water storage type electric water heater 1 according to the embodiment of the present invention is in a temporarily fixed state.

  As shown in FIG. 12, when the tapping member 12 is in a fixed state with respect to the tapping tube 11, the tapping member opening 50 and the projection opening 51 of the fixing member 30 and the tapping hole 121 and projection of the tapping member 12 The positions of the portions 122 correspond to each other, and the spout 121 is inserted into the spout opening 50, and the projection 122 is inserted into the projection opening 51.

  As shown in FIG. 13, when the tapping member 12 is in a temporarily fixed state with respect to the tapping tube 11, the positions of the tapping hole 121 and the opening 50 for the tapping member do not correspond, and the projection 122 and the projection The position with the opening 51 does not correspond, either, and the outlet 121 can not be inserted in the opening 50 for hot water supply members. Similarly, the protrusion 122 can not be inserted into the protrusion opening 51. Thus, the hot water discharge member 12 and the hot water discharge pipe can be inserted by inserting the hot water outlet 121 and the projection 122 of the fixing member 30 and the hot water discharge member 12 only in the fixed state where the hot water discharge member 12 is correctly connected to the hot water discharge pipe 11 It can prevent that the hot water storage type electric water heater 1 is assembled in the state which the connection with 11 is imperfect.

  As described above, the hot water storage type electric water heater 1 shifts the hot water discharge pipe shaft L1 of the hot water discharge pipe 11 and the hot water discharge port shaft L2 of the hot water discharge member 12 and further the positions of the hot water discharge member 12 differ between the temporarily fixed state and the fixed state. It is not necessary to connect the hot water discharge member 12 to the hot water discharge pipe 11 with a screw by comprising so that it may be inserted in the hot water discharge member opening 50 of the fixing member 30 only in a fixed state. be able to. Furthermore, with the above-described structure, since the spout port 121 can not be inserted into the tapping member opening 50 of the fixing member in the temporarily fixed state at the time of assembly, it is suppressed that the assembly operation is completed in the incompletely assembled state. it can.

  Moreover, the storage water type electric water heater 1 can further suppress that an assembly operation is complete | finished in an incomplete state by having the projection part 122 further.

  Moreover, since the storage water type electric water heater 1 can be fixed only by rotating the hot water discharge member 12 with respect to the hot water discharge pipe 11, the troublesome operation | work at the time of an assembly is lose | eliminated, and an assemblability can be improved.

  The hot water storage type electric water heater 1 needs to connect the hot water storage type electric water heater 1 and a water faucet (not shown), and is connected by a hose (not shown). At the time of construction for connecting the water storage type electric water heater 1 and the water faucet, a force is applied to the outlet port 121, so it is preferable to fix with screws in consideration of prevention of the hose from coming off. There is a possibility that the tapping member 12 may rotate with respect to the tapping pipe 11 when the hose is rotated and screwed with the screw thread portion 125, but the tapping pipe 12 and the tap hole 121 Since the shaft is offset, the hose can be firmly connected to the outlet port without the outlet member 12 being rotated and the fixing state being lowered.

  Although the embodiment of the present invention has been described by taking the example of the first-stop type hot-water storage type electric water heater 1, the hot-water storage type electric water heater 1 having a solenoid valve etc. upstream of the hot water storage tank 8 It may be a stop type storage type electric water heater 1.

  Further effects and modifications can be easily derived by those skilled in the art. Thus, the broader aspects of the invention are not limited to the specific details and representative embodiments represented and described above. Accordingly, various modifications may be made without departing from the spirit or scope of the general inventive concept as defined by the appended claims and their equivalents.

DESCRIPTION OF SYMBOLS 1 hot water storage type electric water heater 2 electric water heater main body 3 switch part 3a power button 4 case 5 water supply pipe 6 check valve part 7 pressure reducing valve 8 hot water storage tank 9 electric heater 10 hot water mixing means 11 hot water pipe 11 hot water member 12 air passage 13 14 intake operation unit 15 discharge port 16 discharge pipe 17 on-off valve 18 operation unit 19 control unit 20 hot water side water passage 21 water side water passage 30 fixing member 50 opening for hot water discharge member 51 opening for protrusion 52 opening for check valve portion 53 Pedestal 54 Pedestal opening 55 Pedestal screw 110 Water flow direction notched part 111 Vertical direction notched part 120 Base part 121 outlet port 122 Protrusive part 123 Inserted part 124 Convex part 125 Threaded part L1 Outgoing pipe axis L2 Outgoing port axis L3 Protrusion Division axis

Claims (4)

A hot water storage type electric water heater that discharges stored hot water, and a hot water storage tank provided with a heater,
A water supply pipe for supplying water to the hot water storage tank;
A hot water discharge pipe for discharging hot water from the hot water storage tank;
A tapping member connected to the tapping pipe;
And a fixing member having an opening for a hot water discharge member into which the hot water discharge member is inserted, and preventing the hot water discharge member from coming off the hot water discharge pipe,
In a state where the tapping member is connected to the tapping pipe, the axis of the tapping member in the water flow direction is configured to be different from the axis of the pouring direction of the tap pipe,
The tapping member is configured such that the position in the temporarily fixed state, which is a state of being inserted into the tapping tube, and the position in a fixing state connected to the tapping tube differ, and only in the fixing state A hot water storage type electric water heater characterized in that it is configured to be inserted into an opening. The tapping member is
An insertion portion extending from the base to one side and inserted into the tapping pipe;
An outlet for discharging hot water extending from the base to the other side;
And a projection projecting from the base to the other side,
The hot water storage type electric water heater according to claim 1, wherein the fixing member has a protrusion opening into which the protrusion is inserted. The tapping member has a convex portion extending in a direction perpendicular to one side,
The hot water discharge pipe is
Water flow direction notched part where a part of the end on the most downstream side was notched in the water flow direction,
And a vertical notch which is continuous with the water flow direction notch and is notched in a direction perpendicular to the water flow direction, and the hot-water discharge member has the convex portion as the water flow direction notch The hot water storage type electric hot water according to claim 2, wherein the hot water discharge member is inserted and the vertical groove is fixed to the hot water discharge pipe by moving the convex portion by rotating the hot water discharge member. vessel. The said hot water outlet member has a thread part for connecting the hose connected to the said hot water outlet. The hot water storage type electric water heater according to claim 2 or 3 characterized by things.

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