JP2008309407A - Water heater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water heater capable of easily knowing a hot water temperature to improve safety and usability in using a shower. <P>SOLUTION: This water heater comprises a heater 33 for heating the water, a main body 20 having a water stop valve 30 for supplying and stopping hot water heated by the heater 33, a shower head 27 disposed outside of the main body 20 and discharging hot water through a shower hose 26, and a temperature display unit 36. The temperature display unit 36 has a variable spring for a suitable temperature (not shown in drawing) changing its shape when the hot water of a prescribed temperature flows, and a suitable temperature display board (not shown in drawing) moving in interlocking with the change of the shape of the variable spring for suitable temperature. As whether the temperature of hot water is the suitable temperature or not can be known from the suitable temperature display board of the temperature display unit 36 without touching the hot water from the shower head 27 by a hand, the water heater of high safety and high usability can be provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a water heater used for hot water supply or a shower.

  A conventional water heater of this type will be described with reference to FIGS. FIG. 5 is a perspective view of a conventional water heater, and FIG. 6 is a diagram showing the structure of the water heater.

  5 and 6, the water flowing in from the inlet pipe 1 operates the water pressure detector 4 through the stop cock 2 and the flow control valve 3, and the heating operation of the heater 5 is performed via the controller 13 with this signal. It is started and heated in the tank 6 and discharged from the shower head 9 through a shower hose 8 connected to a hot water discharge pipe 7.

  At the time of use, first adjust the desired hot water temperature with the capacity adjustment knob 10 of the heater 5, and then operate the stop cock knob 11, based on the signals of the capacity adjustment volume 14 and the temperature detector 15, The controller 13 controls the heater 5, discharges hot water at a desired temperature from the shower head 9, and adjusts the flow rate to a desired flow rate with the flow rate adjustment valve knob 12 according to the usage pattern while showering the hand.

  And when stopping, by operating the stop cock knob 11 to the closed side, the stop cock 2 is closed, the supply of water from the inlet pipe 1 is stopped, and hot water is discharged from the shower head 9. Is supposed to stop.

As described above, the conventional water heater of this type is generally used as a main stop method for taking out or stopping hot water from the shower head 9 by opening and closing the stop cock knob 11 provided on the main body side. In accordance with the actual usage when using the shower, hot water is discharged from the shower head 9 and the volume adjustment knob 10 on the main body side is operated while the hand is showered.
JP 07-280343 A

  However, in the configuration of the above-described conventional water heater, when the shower is used, the hot water is discharged from the shower head 9 and the volume adjustment volume 14 on the main body side is operated while showering the hand. It was necessary to do it, and it was forced to be inconvenient that it took time. In addition, there has been a problem that it cannot be confirmed that hot water is being discharged from the shower head 9 and there is a risk of burns in the shower.

  The present invention solves the above-mentioned conventional problems, and aims to provide an easy-to-use water heater that is easy to adjust at an appropriate temperature and that does not cause burns even if hot water is discharged. is there.

In order to solve the above problems, the present invention is provided outside a main body having a heat source for heating supplied water, a main body having a water stop cock for operating supply and stop of hot water obtained by heating with the heat source. A shower head that discharges the hot water through a shower hose, and a temperature display unit. The temperature display unit includes a variable spring whose shape changes when hot water of a predetermined temperature flows, and the variable spring. It has a display part that moves in conjunction with the shape change. For example, if you use a variable spring whose shape changes at a temperature suitable for a shower, you can use hot water from the shower head when you start using the shower. In the temperature display unit, it can be seen that the temperature of the hot water has reached an appropriate temperature, and a highly safe and easy-to-use water heater can be provided. In addition, if the primary shower is stopped by washing the hair when using the shower, the temperature of the tank inside the heat source will rise due to overshoot of the heat source, and hot water may be discharged during the next shower. If you use a variable spring whose shape changes and the display unit that works in response to the change, the display unit of the temperature display unit shows that the hot water is hot and the problem is solved. It is.

  In the water heater of the present invention, the hot water temperature can be determined by observing the display part of the temperature display unit, and it is not necessary to check the temperature of the hot water by hand.

  A first invention includes a heat source for heating supplied water, a main body having a water stop cock for operating supply and stop of hot water obtained by heating with the heat source, and provided outside the main body. A shower head that discharges through a shower hose and a temperature display unit are provided, and the temperature display unit is linked to a variable spring whose shape changes when hot water of a predetermined temperature flows, and a change in the shape of the variable spring. For example, if a variable spring whose shape changes at a temperature suitable for a shower is used, the temperature display unit can be used without starting hot water from the shower head at the start of shower use. The display section shows that the temperature of the hot water has reached an appropriate temperature, and can provide a safe and easy-to-use water heater. Also, if the primary shower is stopped by washing the hair when using the shower, the temperature of the tank inside the heat source will rise due to overshoot of the heat source, and hot water may be discharged during the next shower. If you use a variable spring whose shape changes and the display unit that works in response to the change, the display unit of the temperature display unit shows that the hot water is hot and the problem is solved. It is.

  In the second invention, in particular, the temperature display unit of the first invention is built in the shower head. The temperature of the hot water can be easily confirmed by the hand holding the shower head, and the usability can be improved.

  The third invention is the temperature display unit of the first or second invention, in particular, so that it can be seen that the hot water temperature has reached an appropriate temperature for the shower. The hot water temperature can be known from the display unit of the temperature display unit of the main body or the shower head without placing it on the hand, so that it is safe and easy to use, and the problem that hot hot water is discharged can be solved.

  The fourth aspect of the invention is particularly the temperature display unit of any one of the first to third aspects of the invention, wherein the temperature of the hot water has reached a temperature higher than the appropriate temperature of the shower. Without getting hot water from the shower head, the hot water temperature can be seen on the display unit of the main unit or the temperature display unit of the shower head. If the temperature is high, the capacity adjustment knob provided on the main unit side while checking the display unit The temperature can be adjusted to an appropriate temperature, and the like, which is highly safe and convenient to use, and can solve the problem of hot hot water being discharged.

  In the fifth invention, in particular, the temperature display unit of the first invention is provided in a suitable passage in the heat source, and the variable spring and the display unit are arranged at a position communicating with the downstream inner passage of the tank containing the heat source. In addition, a transparent cover that covers the inner passage is provided so that the state of the display unit can be understood, and the hot water temperature can be determined from the display unit of the temperature display unit of the main body without getting hot water from the shower head. It is possible to provide a highly safe and easy-to-use water heater.

  In the sixth invention, in particular, the temperature display unit of the first or second invention is provided at a suitable position in the inner passage of the shower head, the variable spring and the display portion are arranged at a position communicating with the downstream inner passage, A transparent cover that covers the inner passage is provided so that the status of the display unit can be understood, and the hot water temperature can be seen on the display unit of the temperature display unit of the shower head without getting hot water from the shower head. It is possible to provide an easy-to-use water heater with high characteristics.

  In the seventh invention, in particular, the temperature display unit according to any one of the first to sixth inventions is provided with a plurality of variable springs and display parts for appropriate temperature display and for high temperature display. It is possible to provide a safe and easy-to-use water heater that can easily determine whether the hot water temperature is appropriate or high on the display unit of the temperature display unit of the main body or shower head without putting hot water in your hand. it can.

  In the eighth invention, in particular, a heater is used as the heat source of any one of the first to seventh inventions, the configuration is simplified, and a water heater can be provided at low cost.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
The water heater in the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is an external view of an electric instant water heater in the present embodiment, and FIG. 2 is a block diagram showing an internal structure of the electric instant water heater.

  In FIGS. 1 and 2, 20 is a main body, 21 is a water inlet pipe, 22 is a flow rate adjusting valve, 23 is a stop cock knob, 24 is a capacity adjusting knob, 25 is a hot water outlet pipe, 26 is a shower hose, 27 is a shower head, 28 is a temporary water stop operation unit having a pressure relief valve mechanism (not shown) built therein, 29 is a heat source, and 36 is a temperature display unit.

  In addition, it has a stop cock 30, a flow rate detector 31, a tank 32, a heater 33, a controller 34, and a temperature detector 35, and the heat source 29 includes the tank 32 and the heater 34.

  In the present embodiment, the temperature display unit 36 is provided at an appropriate position in a passage through which hot water obtained by heating with the heater 34 flows.

  The operation of the electric instantaneous water heater in the present embodiment configured as described above will be described.

  First, when the stop cock knob 23 is opened and the temporary water stop operation unit 28 of the shower head 27 is operated to the open position, the water that flows in from the water inlet 21 at a predetermined water supply pressure is supplied to the flow control valve 22 and the stop valve. The water is supplied to the tank 32 through the water tap 30. At this time, the flow rate detector 31 sends a signal to the controller 34 when a predetermined flow rate is detected. The water supplied to the tank 32 is heated by the heater 33 built in the tank 32 because the flow rate detector 31 detects a predetermined flow rate, and the heated water is connected to the tapping pipe 25. It is discharged from the shower head 27 through the shower hose 26.

The hot water temperature at this time is adjusted by setting the capacity adjustment knob 24 to a desired temperature, and the heater 33 is controlled by a capacity adjustment volume (not shown), a temperature detector 35, and a controller 34, and the desired temperature is adjusted. The flow rate can be adjusted to a desired flow rate by adjusting the flow rate control valve 22, and the hot water temperature can be determined by viewing the display portion of the temperature display unit 36.

  In this way, if the volume adjustment knob 24 and the flow rate adjustment valve 22 are set in advance, hot water having a desired temperature can be discharged from the shower head 27 by opening the stop cock knob 23, and By visually observing the display part of the temperature display unit 36, the hot water temperature can be determined.

  FIG. 3 shows the configuration of the temperature display unit 36. When the temperature display unit 36 has a first predetermined amount of hot water, for example, hot water having a temperature suitable for taking a shower, flows. The variable temperature spring 37 for changing the shape, the optimal temperature display plate 40 as a display unit that moves in conjunction with the change in the shape of the variable temperature spring 37, hot water having a second predetermined temperature, in this embodiment A high temperature variable spring 38 whose shape changes when high temperature hot water flows through a second predetermined amount, a high temperature display plate 41 as a display unit that moves in conjunction with the shape change of the high temperature variable spring 38, and holding It is comprised from the spring 39, and the suitable temperature display board 40 and the high temperature display board 41 are visible from the display window 42 now.

  In the present embodiment, a variable temperature spring 37, a high temperature variable spring 38, a proper temperature display plate 40, and a high temperature display plate 41 are connected to the downstream inner passage (not shown) of the tank 32 containing the heater 33. ) And a transparent cover (not shown) that covers the inner passage is provided so that the appropriate temperature display plate 40 and the high temperature display plate 41 can be moved.

  In the above configuration, the operation will be briefly described. First, at the start of shower use, as shown in FIG. 3A, the appropriate temperature variable spring 37, the high temperature variable spring 38, and the holding spring 39 are in a steady state. However, when hot water of appropriate temperature flows in the temperature display unit 36, the variable spring 37 for optimal temperature expands, and the optimal temperature display plate 40 moves in conjunction therewith.

  As shown in FIG. 3B, the display visible from the display window 42 is changed from the display 40a to the display 40b, and the user can visually confirm that the temperature has reached an appropriate temperature.

  Further, when high-temperature water flows in the temperature display unit 36 due to fluctuations in water pressure or power supply, or the user accidentally touching the capacity adjustment knob 24, the high-temperature variable spring 38 is extended, The high temperature display board 41 is interlocked.

  Then, as shown in FIG. 3C, the display visible from the display window 42 is changed from the display 41a to the display 41b, so that the user can visually confirm in advance that the temperature is high.

  FIG. 4 shows a shower head 27 equipped with a primary water stop operation unit 28. At the normal shower position 27a and the water stop position 28b, hot water discharge from the shower head 27 is temporarily stopped by washing the hair while using the shower. If it is desired, the temporary water stop operation unit 28 provided in the shower head 27 can be easily stopped by operating the water stop position 28b side. Although the temperature in the tank 32 is raised and hot water may be discharged when the next shower is used, in the present embodiment, the temperature displayed on the temperature display unit 36 allows the hot water temperature to be visually confirmed and burned. Problems that occur are also eliminated.

In addition, when the water stop operation is performed by the temporary water stop operation unit 28, the shower head does not stop the water completely, and the flow rate below the set flow rate of the flow rate detector 31, that is, the flow rate below the flow rate at which the heater 33 starts the heating operation. If it is made to flow from 27, in the hot water supply passage, a slightly flowing water state is ensured, and the temperature rise effect due to overshoot in the tank 32 that is likely to occur during the water stop operation can be suppressed, and hot water is discharged at the next discharge. In addition to eliminating the problem that the hot water temperature is observed by viewing the display window 42 of the temperature display unit 36, the problem of causing burns is also eliminated.

  In the above embodiment, the temperature display unit 36 is provided in the main body 20, but it may be incorporated in the shower head 27. In this case, the temperature display unit 36 is provided in the shower head 27 at an appropriate position in the passage through which hot water flows. More specifically, an appropriate temperature variable spring 37, a high temperature variable spring 38, an appropriate temperature display plate 40, and a high temperature display plate 41 are arranged at positions communicating with a downstream inner passage (not shown), Furthermore, if a transparent cover (not shown) covering the inner passage is provided, it is possible to easily understand the movement status of the appropriate temperature display board 40 and the high temperature display board 41.

  With the above configuration, when it is desired to check the hot water temperature, it is not necessary to bother to approach the main body 20, and it is only necessary to look at the temperature display unit 36 of the shower head 27 at hand, thereby improving usability.

  The water heater of the present invention can be easily applied to various types of water heaters because the water temperature is easily known, the safety during use of the shower is high, and it is easy to use.

External view of electric instant water heater in the first embodiment of the present invention Block diagram showing the internal structure of the electric instant water heater (A) Structure diagram of the temperature display unit of the electric instant water heater (at the start of use), (b) Structure diagram of the temperature display unit (at an appropriate temperature), (c) Structure diagram of the temperature display unit (at high temperature) ) External view of the shower head of the electric instant water heater Perspective view of a conventional water heater Diagram showing the structure of the water heater

Explanation of symbols

20 Main body 26 Shower hose 27 Shower head 28 Temporary stop operation unit 30 Stop cock 31 Flow rate detector 33 Heater (heat source)
36 Temperature display unit 37 Variable spring for optimum temperature (variable spring)
38 Variable spring for high temperature (variable spring)
40 Appropriate temperature display board (display part)
41 High temperature display (display)

Claims (8)

A heat source for heating the water to be supplied, a main body having a stop cock for operating supply and stop of hot water obtained by heating with the heat source, and provided outside the main body, and discharging the hot water through a shower hose And a temperature display unit. The temperature display unit includes a variable spring whose shape changes when hot water of a predetermined temperature flows, and a display unit that moves in conjunction with the change in shape of the variable spring. The water heater characterized by having. The water heater according to claim 1, wherein the temperature display unit is built in the shower head. The water heater according to claim 1 or 2, wherein the temperature display unit allows the hot water temperature to reach an appropriate temperature for a shower. The water heater according to any one of claims 1 to 3, wherein the temperature display unit indicates that the hot water temperature has reached a high temperature equal to or higher than an appropriate temperature of the shower. A temperature display unit is provided at an appropriate passage in the heat source, a variable spring and a display unit are disposed at a position communicating with the downstream inner passage of the tank incorporating the heat source, and a transparent cover is provided to cover the inner passage. The water heater according to claim 1, wherein the state of the display unit is understood. A temperature display unit is provided at a suitable position in the inner passage of the shower head, a variable spring and a display unit are disposed at a position communicating with the downstream inner passage, and a transparent cover is provided to cover the inner passage. The water heater according to claim 1 or 2, which is configured to be understood. The water heater according to any one of claims 1 to 6, wherein the temperature display unit is provided with a plurality of variable springs and a plurality of display units for appropriate temperature display and high temperature display. The water heater according to any one of claims 1 to 7, wherein a heater is used as a heat source.

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