JP2007113845A - Mist device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a comfortably usable mist device capable of reducing running costs since there is no need to discard hot water of a hot water storage tank by supplying hot water from the hot water storage tank to a jetting part and providing hot water mist even in a jetting part with a small mist flow rate. <P>SOLUTION: In the mist device, the hot water to be jetted from the jetting part is supplied by mixing the hot water from the hot water storage tank and water from a water supply pipe arrangement by a mixing valve provided in a midway part of a hot water supply pipe arrangement from the hot water storage tank to the jetting part. A heating apparatus is provided for heating water or hot water of the hot water storage tank. The water or hot water of the hot water storage tank is heated by a heat pump type heating apparatus. A hot water return pipe arrangement from a heat pump to the hot water storage tank, and the hot water supply pipe arrangement from the hot water storage tank to the jetting part are provided on an upper part of the hot water storage tank. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a mist device suitable mainly for home use.

As a spraying device for spraying hot water from a water heater as a mist or shower into the bathroom, the water sent from the water tap is warmed through the instantaneous water heater 22 as in the conventional example 1 shown in FIG. In some cases, the water supply pressure is used as it is, and the hot water heater 22 supplies the hot water to the blasting section 15 that makes the hot water a mist.
In such an ejection device, when the water supply pressure is low, there is a problem that the hot water from the ejection section 15 does not become mist, so that the pressure is increased in the middle of the piping path from the instantaneous water heater 22 to the ejection section 15. There is known a jetting device in which the hot water supplied from the jetting unit 15 is mist-like by increasing the hot water supply pressure by providing the electromagnetic pump 20. (See Patent Document 1).

  However, the instantaneous water heater 22 is a system in which hot water cannot be supplied unless a certain amount or more of water flows (as the operating condition of the water heater, the required hot water flow rate is greater than or equal to the minimum operating water amount set for each water heater. On the other hand, since the flow rate of hot water generally used in the mist device is less than 1 liter per minute and does not reach the minimum amount of working water, hot water is supplied from the instantaneous water heater 22 to the ejection unit 15. Therefore, there is a problem that hot water mist cannot be ejected.

  As a mist device that solves such problems, a hot water supply passage that branches from the hot water supply pipe from the instantaneous water heater to the spraying part and has a pressure loss set equal to or higher than that of the spraying part side is provided. There is one that increases the flow rate to ensure the minimum flow rate required to ignite the water heater. In addition, a hot water storage unit is provided in the middle of the hot water supply pipe from the hot water supply unit to the spraying unit, and hot water is supplied to the hot water storage unit at a flow rate that is more than the minimum required to ignite the hot water supply unit. There is a mist device for supplying to the ejection part. (Patent Document 2)

  However, in order to ensure the minimum flow rate required to ignite the instantaneous hot water heater, branching the hot water supply pipe to provide a hot water discharge path, and throwing away hot water from it wastes hot water and runs accordingly. Cost increases. In addition, the provision of a hot water storage part in the middle of the hot water supply pipe cannot be used when the hot water remaining after using the mist device is cooled, so it is thrown away, which also increases the running cost.

As a mist device for solving such a problem, there is a conventional example 2 shown in FIG.
In FIG. 6, the instantaneous water heater 22 is provided with a circulation passage 24 and a circulation pump 5 connected to the mist generator 10. The circulation pump 5 in the instantaneous water heater 22 is operated to operate the circulation. The heat medium filled in the passage 24 circulates in the heat exchanger 21 in the mist generator 10.
The water supply pipe 6 is connected to the instantaneous water heater 22 and is connected to the mist generating device 10 by providing a branch in the middle thereof. In the mist generator 10 main body, a heat exchanger 21 that heats the water supplied from the water supply pipe 6 to hot water, a temperature sensor 11 that detects the temperature of the hot water, and ON / OFF of water flow of the hot water. A solenoid valve 12 is provided. The mist generating device 10 is disposed in the bathroom 9 or outside the bathroom 9. Hot water heated in the mist generating device 10 is passed from the solenoid valve 12 through the mist pipe 14 to an ejection portion 15 that ejects into the bathroom space provided in the bathroom 9.
When mist is ejected into the bathroom 9, the electromagnetic valve 12 in the mist generating device 10 is opened by pressing an operation switch with the remote controller 17. The heat medium heated by the instantaneous water heater 22 circulates in the heat exchanger 21 in the mist generator 10, and heats by branching from the water supply pipe 6 and exchanging the supplied water. When hot water is detected by the temperature sensor 11 in the mist generator 10, the electromagnetic valve 12 in the mist generator 10 is opened, and the jet part 15 that spouts into the bathroom space provided in the bathroom 9 through the mist pipe 14. Supply hot water.

In such a mist device, even when the flow rate of hot water used for mist ejection is small, there is no problem in the ignition of the instantaneous water heater 22, and stable hot water mist is ejected, but supplied to the ejection section 15. The hot water that is branched off from the water tap is heated by exchanging the supplied water with the heat medium heated by the instantaneous water heater 22, so that there is heat loss and fuel is wasted. Had a problem.
Japanese Patent Publication No. 6-9598 JP 2002-489 A

  Even if the flow rate of hot water when using mist is small, the present invention can use hot water mist comfortably by supplying hot water stably to the spout, and it can efficiently heat hot water without wasting wasteful water. By carrying out, the mist apparatus which can reduce a running cost is provided.

The present invention relates to the following.
(1) Mist supplied by mixing hot water from the hot water storage tank and hot water from the hot water supply pipe by a mixing valve provided in the middle of the hot water supply pipe from the hot water storage tank to the jetting part. apparatus.
(2) A mist device comprising a heating device for heating water or hot water in a hot water storage tank according to item (1).
(3) The mist device according to item (1) or (2), wherein the heating device is a heat pump heating device.
(4) The mist device according to any one of items (1) to (3), wherein a hot water return pipe from the heat pump to the hot water storage tank and a hot water supply pipe from the hot water storage tank to the ejection section are provided in the upper part of the hot water storage tank.
(5) The mist device according to any one of items (1) to (3), wherein the hot water return pipe from the heat pump to the hot water storage tank is directly connected to the hot water supply pipe from the hot water storage tank to the ejection section.
(6) In item (5), the hot water supply pipe is provided with a flow rate adjustment valve and a return pipe to the hot water storage tank, and hot water supplied from a heat pump type heating device with respect to the amount of hot water ejected from the ejection section when using mist. A mist device that stores excess water in a hot water storage tank.

  According to the mist device of the present invention, the hot water from the hot water storage tank and the water from the water supply pipe are mixed by the mixing valve to supply the hot water of the mist ejected from the ejection part. Even when the flow rate is less than the minimum required flow rate for the instantaneous water heater to ignite, hot water is supplied to the jetting part, and hot water mist is possible. (Claim 1)

  When equipped with a heating device that heats the water or hot water in the hot water storage tank, the water or hot water in the hot water storage tank can be heated above the temperature required for the use of the mist device. This eliminates the waste of hot water. (Claim 2)

  When the heating device that heats the water or hot water in the hot water storage tank is of the heat pump type, the thermal efficiency is good, so the running cost can be reduced. (Claim 3)

  If the return pipe from the heat pump to the hot water storage tank and the hot water supply pipe from the hot water storage tank to the spout are installed at the top of the hot water storage tank, the hot water heated by the heat pump and returned to the hot water storage tank will return from the top of the hot water storage tank. In addition, since the temperature is higher than the hot water stored in the hot water storage tank, it accumulates in the upper part of the hot water storage tank, so by installing a hot water supply pipe to the jet outlet in the upper part of the hot water storage tank, It will be used as it is, and hot water at the temperature required for mist use can be continuously supplied. (Claim 4)

  By supplying the hot water heated by the heat pump type heating device directly to the hot water supply pipe to the ejection part, hot water having a temperature necessary for mist use can be continuously supplied. (Claim 5)

  A flow control valve and a return pipe to the hot water storage tank are installed in the hot water supply piping, and the excess amount of hot water supplied from the heat pump type heating device is stored in the hot water storage with respect to the amount of hot water jetted from the jetting part when using mist. By storing hot water in the tank, there is no waste of hot water and running costs can be reduced. (Claim 6)

As an example of the mist device according to the present invention, as shown in FIG. 1, a hot water storage type hot water heater 1, a hot water supply pipe 8 for supplying hot water from the hot water storage type hot water supply 1 to the jet part 15, and the hot water supply pipe 8 A mixing valve 7 that mixes hot water and water from the water supply pipe 6, a mist generator 10 that controls hot water that is jetted from the jetting section 15 using the mixed water (hot water) from the mixing valve 7, and a jetting section 15 A mist pipe 14 for passing hot water, an ejection part 15 for ejecting mist, and a drain pipe 16 may be used.
In such a mist device, since the mist is ejected using hot water of the hot water storage tank 4, it is not necessary to consider the minimum operating flow rate for igniting the combustion device as in the case of using an instantaneous water heater, Even when the amount of hot water used is small, stable hot water mist can be ejected.

  The mist generator 10 includes a temperature sensor 11 that detects the temperature of the mixed water (hot water) mixed by the mixing valve 7, an electromagnetic valve 12 that turns on / off the supply of the mixed water (hot water), and an electromagnetic valve. In the case of ON, there is one that includes a switching valve that switches the water-flow path of the mixed water (hot water) to the mist pipe 14 that leads to the ejection portion 15 and the drain pipe 16.

  At this time, the switching valve 13 drains the piping path until it is detected that the mixed water sent from the mixing valve 7 to the mist device is hot water having a temperature set by the temperature sensor 11 in the mist generator 10. When the water in the pipe is drained into a drain outlet provided in the bathroom 9 or outside the bathroom 9 and the mixed water is detected by the temperature sensor 11 to have a temperature higher than the set temperature, the switching valve 13, use of mist starts when the piping path is switched to the ejection section 15 side and mixed water, which is hot water, is supplied to the ejection section 15 ejected into the bathroom space provided in the bathroom 9 via the mist piping 14. Since hot water mist spouts from time to time, mist users can use it comfortably.

The hot water storage type hot water heater 1 is generally of a type in which water is heated by a heating device and kept in a hot water storage tank to store hot water. The heating device may be installed in the hot water storage tank 4 or may be installed outside the hot water storage tank 4. When the heating device is installed in the hot water storage tank 4, it is desirable to circulate hot water heated by the heating device using the circulation pump 5 to the hot water storage tank.
Thereby, even when the hot water stored in the hot water storage tank 4 is cooled, the temperature of the hot water can be raised to a temperature suitable for mist use, and the hot water is not discarded, so that the hot water is not wasted.

As the heating device, one using an electric heater, one using oil / gas combustion heat, one using solar heat, one using a heat pump, or the like can be used. Although late-night power can be used, it is desirable to use a heat pump type heating device because of its high thermal efficiency.
Thereby, running cost can be reduced. Note that the refrigerant used in the heat pump is preferably carbon dioxide because it can store hot water at high temperatures.

When a heating device is installed outside the hot water storage tank 4 and the circulating pump 5 is used to circulate hot water heated by the heating device to the hot water storage tank, a hot water return pipe 3B from the heating device to the hot water storage tank 4 is provided. It is desirable to connect to the upper part of the hot water storage tank 4.
Thereby, the hot water just heated can be stored in the upper part of the hot water storage tank 4 in a state separated from the water in the hot water storage tank 4 and the low temperature hot water.
At this time, the hot water supplied from the hot water storage tank 4 to the mist generator 10 is preferably taken out from the upper part of the hot water storage tank 4. For this purpose, the hot water supply pipe 8 is connected to the upper part of the hot water storage tank 4.
Thereby, the hot water suitable for mist use can be preferentially used in the hot water in the hot water storage tank 4.

In the above case, only when the mist device is used, when the heat pump type heating device is operated to supply hot water, the hot water supply amount of the heat pump type heating device is as low as about 1 liter per minute. Since it is equivalent to the amount of hot water used in the device, there is little increase or decrease in hot water in the hot water storage tank.
For this reason, even when the mist device of the present invention is installed in a hot water storage type hot water heater using an existing heat pump type heating device, it is not necessary to increase the capacity of the hot water storage tank, and the existing hot water storage tank can be used as it is. The initial cost can be reduced. Furthermore, even when a hot water storage type hot water heater using a heat pump type heating device is newly installed, since it is not necessary to provide a large hot water storage tank for the mist device, the cost can be reduced accordingly.

The hot water supply pipe to the mist generating apparatus 10 of the mist apparatus according to the present invention may be provided by branching from the downstream of the mixing valve 7 of the hot water supply pipe 8 to a general hot water outlet such as a shower as shown in FIG. Further, as shown in FIG. 2, a dedicated hot water supply pipe 8 </ b> A for supplying hot water to the mist generator 10 and the mixing valve 7 </ b> A may be provided independently.
Thus, by providing the hot water supply pipe 8A and the mixing valve 7A dedicated to the mist device, hot water from the mist device and other hot water outlets can be used at the same time, and can be used at different temperatures depending on each application. This improves usability.

When a heat pump type heating device is used and the water in the hot water storage tank 4 is heated and circulated to the hot water storage tank 4, the return pipe 3B for returning hot water from the heat pump type heating device to the hot water storage tank 4 is It can also be directly connected to the hot water supply pipe 8 following the mist generator 10. In the case of a heat pump type heating device, the amount of hot water supplied is as low as about 1 liter per minute, which is equivalent to the amount of hot water used in the mist device, so there is no need to throw away extra hot water and waste hot water. It is.
Thereby, the hot water heated by the heat pump type heating device can be directly supplied to the mist generating device 10 as the hot water by the mixing valve 7. Further, as long as the heat pump type heating device is operated, hot water can be continuously supplied to the mist generating device 10.

In the case where the heat pump type heating device is used as described above and the circulating pump 5 is used to directly connect the hot water return pipe 3B heated by the heat pump type heating device to the hot water supply pipe 8 following the mist device 10. As shown in FIG. 3, the return pipe 3B from the heat pump type heating device is branched, and a three-way valve 23 is attached to the branching portion, one connected to the mist generating device 10 side and the other connected to the hot water storage tank 4 side. It is desirable to do.
Thus, by controlling the three-way valve 23, hot water is returned to the hot water storage tank 4 when the mist is not used, and only when the mist is used, the hot water supply pipe 8 to the mist generator 10 is connected to the hot water supply pipe 8 from the hot water storage tank 4. The return pipe 3B can be directly supplied. In addition, by controlling the three-way valve 23, even if the flow rate of hot water used in the mist is small and the flow rate of hot water supplied from the heat pump type heating device is excessive, excess water is supplied. It can be returned to the hot water storage tank 4 and stored.

Furthermore, in the case of using the heat pump type heating device as described above and directly connecting the hot water return pipe 3 </ b> B heated by the heat pump type heating device to the hot water supply pipe 8 following the mist device 10 using the circulation pump 5. As shown in FIG. 4, the return pipe 3B from the heat pump type heating device is branched, and a flow rate adjusting valve 19 is attached to the branching portion, one on the mist generating device 10 side and the other on the hot water storage tank 4 side. It is desirable to connect.
Thus, by controlling the flow rate of hot water sent to the mist generating device 10 to be less than the flow rate of hot water supplied from the heat pump type heating device, the hot water flow rate used in the mist becomes constant, and stable mist ejection Is obtained. Further, excess hot water can be returned to the hot water storage tank 4 and stored.

After using the mist, it is desirable to drain the hot water remaining in the mist pipe 14 from the drain pipe 16 by operating the switching valve 13. Thereby, when using a mist apparatus next, a user can use comfortably, without bathing in cold water.
In this case, it is desirable that the mist pipe 14 is provided at a position higher than the switching valve 13 and the drainage pipe 16 is provided at a position lower than the switching valve 13 in terms of facilitating drainage from the drainage pipe 16. Moreover, the joint (not shown) with the mist pipe 14 of the switching valve 13 is directed upward, the joint (not shown) with the drain pipe 16 is directed downward, and all the ports of the switching valve 13 are connected. It is desirable to be in the open state. As a result, the hot water remaining in the mist pipe 14 is naturally drained through the drain pipe 16, so that the hot water remaining in the mist pipe 14 is prevented from freezing and no mist is generated even in winter. it can. For this reason, the capacity and number of heaters provided for preventing freezing can be reduced.
The switching valve 13 can be provided with one electromagnetic valve on each of the mist side passage and the drain side, but there is no problem in forming the hot water flow path. Therefore, it is desirable to use a motor-driven three-way valve.

  Further, when the hot water supply pipe 8 from the hot water storage tank 4 is branched downstream of the mixing valve 7 and one is supplied to the mist generator 10 side and the other is supplied to the general hot water outlet side such as a shower, Thus, in addition to draining the hot water remaining in the mist pipe 14 from the drain pipe 16 by operating the switching valve 13, it branches from the position of the mixing valve 7 to the mist generator 10 side downstream of the mixing valve 7. It is desirable to drain the hot water (high temperature) remaining in the hot water supply pipe 8 up to the above position from the drain pipe 16. In this drainage method, the mixing valve 7 is controlled so that the temperature of the mixed water is a temperature used at a general hot water outlet such as a shower (low temperature), and the mixed water is supplied to the hot water supply pipe on the mist generator 10 side. Then, the switching valve 13 is operated to drain from the drain pipe 16.

As a result, after the mist is used, the hot water supply pipe 8 downstream from the mixing valve 7 is filled with hot water at a temperature (low temperature) used at a general hot water outlet such as a shower. Even when hot water is used from a general hot water outlet such as hot water, hot water is not supplied and safety is ensured.
Further, by discharging the hot water (high temperature) remaining after using the mist in this way, even when there is only one hot water supply pipe 8 from the hot water storage tank 4 and only one mixing valve 7, the mixing valve 7 However, by branching the hot water supply pipe 8 for mist from the downstream hot water supply pipe 8, it is possible to easily install the mist device while ensuring safety, and the labor of construction is greatly reduced. Moreover, it can be attached to an existing heat pump type heating device without carrying out a large-scale modification work, and the cost can be greatly reduced.

  An embodiment of a mist device according to the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram showing the configuration of the first embodiment of the present invention.
The hot water storage type hot water heater 1 is provided with an outgoing pipe 3A and a return pipe 3B connected to the heat pump 2, and a hot water storage tank 4. A return pipe 3 </ b> B from the heat pump 2 to the hot water storage tank 4 and a hot water supply pipe 8 from the hot water storage tank 4 to the ejection portion 15 are provided in the upper part of the hot water storage tank 4. By operating the circulation pump 5 in the heat pump 2, the water from the forward pipe 3A is supplied and heated in the heat pump 2 and stored in the hot water storage tank 4 through the return pipe 3B. In addition, since the heat pump can store hot water, a heat pump using carbon dioxide gas is used.

  As described above, when the return pipe 3B from the heat pump 2 to the hot water storage tank 4 and the hot water supply pipe 8 from the hot water storage tank 4 to the ejection section 15 are provided in the upper part of the hot water storage tank 4, the heat pump 2 is heated to store hot water. The hot water returned to the tank 4 is returned from the upper part of the hot water storage tank 4, and since the temperature is higher than that of the hot water stored in the hot water storage tank 4, it accumulates in the upper part of the hot water storage tank 4. By providing the hot water supply pipe 8 at the upper part of the hot water storage tank 4, the hot water returned from the heat pump is almost used as it is. Even if the amount of hot water when using the mist is small, It can always be supplied continuously.

In the above case, only when the mist device is used, when the heat pump type heating device is operated to supply hot water, the hot water supply amount of the heat pump type heating device is as low as about 1 liter per minute. Since it is equivalent to the amount of hot water used in the device, there is little increase or decrease in hot water in the hot water storage tank.
For this reason, even when the mist device of the present invention is installed in a hot water storage type hot water heater using an existing heat pump type heating device, it is not necessary to increase the capacity of the hot water storage tank, and the existing hot water storage tank can be used as it is. The initial cost can be reduced. Furthermore, even when a hot water storage type hot water heater using a heat pump type heating device is newly installed, since it is not necessary to provide a large hot water storage tank for the mist device, the cost can be reduced accordingly.

  The hot water stored in the hot water storage tank 4 is mixed with the water supplied by the water supply pipe 6 by the mixing valve 7 in the hot water storage type hot water heater 1, and the hot water is supplied in the kitchen or bathroom 9 through the hot water supply pipe 8. Supplied to the hot water tap. The hot water supply pipe 8 connected to the hot water storage type hot water heater 1 is provided with a branch in the middle and connected to the mist generating device 10.

In the mist generator 10 main body, a temperature sensor 11 for detecting the temperature of hot water supplied from the hot water storage type hot water heater 1, an electromagnetic valve 12 for turning on / off hot water, and a hot water path are switched. A switching valve 13 is provided, and the hot water mist generator 10 is disposed inside or outside the bathroom 9.
Further, a drainage pipe 16 provided in the bathroom 9 or outside the bathroom 9 is further provided in the jetting part 15 that jets from the switching valve 13 in the mist generating apparatus 10 to the bathroom space provided in the bathroom 9 via the mist pipe 14. Connect to.

  When mist is ejected into the bathroom 8, the electromagnetic valve 12 in the mist generator 10 is opened by pressing the operation switch using the remote controller 17 or the like. The hot water stored in the hot water storage tank 4 is mixed with water from the water supply pipe by the mixing valve 7, and this mixed water is sent to the switching valve 13 via the electromagnetic valve 12 in the mist generator 10.

  The mixed water sent to the switching valve 13 switches the piping path to the drainage side by the switching valve 13 until it is detected that the temperature of the mixed water is higher than the temperature set by the temperature sensor 11 in the mist generator 10. Is drained into a drain outlet provided in the bathroom 9 or outside the bathroom 9. When the temperature sensor 11 detects that the mixed water is hot water at a temperature higher than the set temperature, the switching valve 13 switches the piping path to the ejection portion 15 side and is provided in the bathroom 9 via the mist piping 14. Mixed water, which is hot water, is supplied to the jetting part 15 that jets into the bathroom space.

  The hot water supplied to the eruption section 15 is warmed and stored in the hot water storage tank 4 by using heat generated by any method using electricity such as condensation heat or an electric heater at a time when the electricity rate is low such as midnight. Use hot water. For this reason, the mist apparatus with a low running cost is realizable. Moreover, even if the flow rate of hot water when using mist is small, hot water having a stable temperature can be used, and a comfortable mist device can be provided.

After using the mist, the hot water remaining in the mist pipe 14 is drained from the drain pipe 16 by operating the switching valve 13. Thereby, since hot water does not remain in the mist pipe 14 and becomes cold water, the cold water does not spout in the initial use when the mist is used next time, and can be used comfortably.
In this case, the mist pipe 14 is provided at a position higher than the switching valve 13, and the drainage pipe 16 is provided at a position lower than the switching valve 13. This facilitates drainage from the drainage pipe 16. Moreover, the joint (not shown) with the mist pipe 14 of the switching valve 13 is directed upward, the joint (not shown) with the drain pipe 16 is directed downward, and all the ports of the switching valve 13 are connected. Make it open. As a result, the hot water remaining in the mist pipe 14 is naturally drained through the drain pipe 16, so that the hot water remaining in the mist pipe 14 is prevented from freezing and no mist is generated even in winter. it can. For this reason, the capacity and number of heaters provided for preventing freezing can be reduced.

  Further, in the first embodiment, the hot water supply pipe 8 from the hot water storage tank 4 is branched downstream of the mixing valve 7 so that one is supplied to the mist generating device 10 side and the other is supplied to the general hot water supply side such as a shower. Therefore, as described above, the hot water remaining in the mist pipe 14 is drained from the drain pipe 16 by operating the switching valve 13, and the hot water supply from the position of the mixing valve 7 to the switching valve 13. The hot water (high temperature) remaining in the pipe 8 is drained from the drain pipe 16. In this drainage method, the mixing valve 7 is controlled so that the temperature of the mixed water is a temperature used at a general hot water outlet such as a shower (low temperature), and the mixed water is supplied to the hot water supply pipe on the mist generator 10 side. Then, the switching valve 13 is operated to drain from the drain pipe 16.

As a result, after the mist is used, the hot water supply pipe 8 downstream from the mixing valve 7 is filled with hot water at a temperature (low temperature) used at a general hot water outlet such as a shower. Even when hot water is used from a general hot water outlet such as hot water, hot water is not supplied and safety is ensured.
Further, by discharging the hot water (high temperature) remaining after using the mist in this way, even when there is only one hot water supply pipe 8 from the hot water storage tank 4 and only one mixing valve 7, the mixing valve 7 However, by branching the hot water supply pipe 8 for mist from the downstream hot water supply pipe 8, it is possible to easily install the mist device while ensuring safety, and the labor of construction is greatly reduced. Moreover, it can be attached to an existing heat pump type heating device without carrying out a large-scale modification work, and the cost can be greatly reduced.

FIG. 2 is a schematic diagram showing the configuration of the second embodiment of the present invention.
Example 1 is the same as Example 1 except that a dedicated hot water supply pipe 8 for supplying hot water to the mist generator 10 and the mixing valve 7 are provided independently.
Thus, by providing the hot water supply pipe 8 and the mixing valve 7 dedicated to the mist device, hot water from the mist device and other hot water outlets can be used at the same time, and can be used at different temperatures depending on each application. This improves usability.

  As in the case of the first embodiment, after using the mist, the hot water remaining in the mist pipe 14 is drained from the drain pipe 16 by operating the switching valve 13. Thereby, since hot water does not remain in the mist pipe 14 and becomes cold water, the cold water does not spout in the initial use when the mist is used next time, and can be used comfortably.

  In the second embodiment, since the hot water storage tank 4 has the hot water supply pipe 8A dedicated to the mist device and the mixing valve 7A, the hot water remaining in the mist pipe 14 is removed from the switching valve 13 after using the mist as described above. The hot water remaining in the hot water supply pipe 8 between the position of the mixing valve 7 and the switching valve 13 can be controlled by simply draining from the drainage pipe 16 by the operation, and the number of heaters for preventing freezing can be reduced. (High temperature) may not be drained from the drain pipe 16.

FIG. 3 is a schematic diagram showing the configuration of the third embodiment of the present invention.
The hot water heated by the heat pump type heating device is directly supplied from the hot water storage tank 4 to the hot water supply pipe to the ejection portion 15. In this case, the return pipe 3B from the heat pump type heating device is branched, and a three-way valve 23 is attached to the branch portion, and one is connected to the mist generating device 10 side and the other is connected to the hot water storage tank 4 side. Except this, it is the same as the first embodiment.

Thus, by controlling the three-way valve 23, hot water is returned to the hot water storage tank 4 when the mist is not used, and only when the mist is used, the hot water supply pipe 8 to the mist generator 10 is connected to the hot water supply pipe 8 from the hot water storage tank 4. The return pipe 3B can be directly supplied.
In the heat pump type heating device, the amount of hot water supplied is about 1 liter per minute, which is equivalent to the amount of hot water used when using mist. For this reason, the hot water warmed by the heat pump type heating device can be used as it is in the mist device.
Further, even when the flow rate of hot water used in the mist is small and the flow rate of hot water supplied from the heat pump type heating device is excessive, by controlling the three-way valve 23, excess hot water is supplied. It can be returned to the hot water storage tank 4 and stored.

  In this way, hot water heated by the heat pump type heating device is directly supplied to the hot water supply pipe to the ejection part, thereby constantly supplying hot water at a temperature necessary for mist use. be able to.

FIG. 4 is a schematic diagram showing the configuration of the fourth embodiment of the present invention.
The hot water supply pipe 8 is provided with a flow rate adjusting valve 19 and a return pipe 3B to the hot water storage tank 4, and the amount of hot water supplied from the heat pump type heating device is excessive with respect to the amount of hot water ejected from the ejection section when using mist. Example 2 is the same as Example 2 except that hot water is stored in a hot water storage tank.
By adopting such a configuration, waste of hot water is eliminated and running costs can be reduced.

It is a schematic block diagram which shows Example 1 of the mist apparatus by this invention. It is a schematic block diagram which shows Example 2 of the mist apparatus by this invention. It is a schematic block diagram which shows Example 3 of the mist apparatus by this invention. It is a schematic block diagram which shows Example 4 of the mist apparatus by this invention. It is a schematic block diagram of the mist apparatus by the prior art example 1. It is a schematic block diagram of the mist apparatus by the prior art example 2.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Hot water storage type water heater 2 Heat pump 3A Outward piping 3B Return piping 4 Hot water storage tank 5 Circulation pump 6 Water supply piping 7 Mixing valve 7A Mixing valve for exclusive use of mist device 8 Hot water supply piping 8A Hot water supply piping for exclusive use of mist device 9 Bathroom 10 Mist generating device 11 Temperature Sensor 12 Solenoid valve 13 Switching valve 14 Mist piping 15 Blowing section 16 Drain piping 17 Remote control 18 Water heater 19 Flow rate adjusting valve 20 Electromagnetic pump 21 Heat exchanger 22 Instantaneous water heater 23 Three-way valve 24 Circulation passage

Claims (6)

A mist device in which hot water ejected from a spout unit is supplied by mixing hot water from a hot water storage tank and water from a water supply pipe by a mixing valve provided in the middle of the hot water supply pipe from the hot water storage tank to the spout unit. The mist device according to claim 1, further comprising a heating device that heats water in the hot water storage tank or hot water. 3. The mist device according to claim 1, wherein the heating device is a heat pump type heating device. 4. The mist device according to any one of claims 1 to 3, wherein a hot water return pipe from the heat pump to the hot water storage tank and a hot water supply pipe from the hot water storage tank to the ejection section are provided in an upper part of the hot water storage tank. 4. The mist device according to claim 1, wherein a hot water return pipe from the heat pump to the hot water storage tank is directly connected to a hot water supply pipe from the hot water storage tank to the ejection section. 6. An excess amount of hot water supplied from a heat pump type heating device with respect to the amount of hot water ejected from a jetting part when a mist is used by providing a flow rate adjusting valve and a return piping to a hot water storage tank in the hot water supply piping. A mist device that stores hot water in a hot water storage tank.

Images