JP4157876B2 - Mist sauna combined water heater - Google Patents

Description

  The present invention relates to a mist sauna combined hot water supply apparatus provided with a mist sauna conduit connected to a mist nozzle of a bathroom with respect to a hot water outlet connected to a heat exchanger of a heat source device.

Conventionally, as shown in FIG. 4, a mist sauna pipe 102 is branched from a hot water outlet pipe 107 connected to a heat exchanger 104 of a heat source apparatus 101 as a bath jetting device, and the hot water outlet pipe 107 and the mist sauna are branched to this branch portion. There is a switch valve 109 that selectively switches the communication state with the pipe line 102 (Patent Document 1). In this bath spraying device, the switching valve 109 is switched to the mist sauna conduit 102 side, and hot water heated by the heat exchanger 104 is ejected as mist from the mist nozzle 120 of the bathroom BR through the mist sauna conduit 102. .
JP-A-4-241867 JP 2000-237273 A

By the way, since only a small amount of water of about 2 liters / minute is used in the mist sauna in the bathroom BR, the heat exchanger 104 has a small amount of about 2 liters / minute when only the mist sauna is used in the above-mentioned spray device for bath. Only the amount of water is washed away. In addition, in order to prevent emptying in the heat exchanger 104, excessive rise in the temperature of the tapping water, etc., the heat source device 101 has to have a water amount in the heat exchanger 104 of about 4 liters / minute or more. Some burner combustion is controlled. Therefore, when using the mist sauna communicated to the mist sauna conduit 102 side by the switching valve 109, burner combustion is not performed by not reaching the above-mentioned amount of working water, and a hot water mist sauna may not be realized.
Therefore, when using the mist sauna in the heat source device 101, for example, it may be possible to force the burner combustion to realize the use of the mist sauna. However, even in this case, since the amount of water used for the mist sauna is small, excessively heated hot water flows into the mist sauna conduit 102 and is ejected from the mist nozzle 120, making it difficult to use a comfortable mist sauna. obtain.
On the other hand, when the hot water outlet pipe 107 is selectively switched to either the mist sauna or the hot water supply by the switching valve 109 as in the conventional bath spraying device, the hot water supply cannot be used during the use of the mist sauna, and it is easy to use. Is not good.
This invention is made | formed in view of the said situation, and makes it a subject to implement | achieve the mist sauna combined use hot water supply apparatus which can perform a comfortable mist sauna and can use hot water supply even during mist sauna use.

(1) A mist sauna combined hot water supply apparatus according to the present invention includes a burner for heating a heat exchanger, a water supply pipe connected to a water inlet of the heat exchanger, and a hot water outlet connected to a water outlet of the heat exchanger. A mist sauna combined hot water supply apparatus provided with a mist sauna pipe connected to a mist nozzle of a bathroom with respect to the hot water supply pipe in the heat source device provided with a water amount sensor provided in the water supply pipe. A bypass pipe that bypasses the water supply pipe and merges the water in the water supply pipe with the hot water from the outlet hot water pipe, and mixes and adjusts the water from the bypass pipe and the hot water from the hot water outlet. A mixing controller that adjusts the temperature to a desired mist set temperature, an on-off valve that is provided in the mist sauna conduit and that controls the flow or shut-off of the hot water that is temperature-controlled by the mixing controller, and the water amount sensor has a constant working water amount When a bar is detected While allowing combustion and during mist sauna use the on-off valve is opened to detect the small amount of water the water sensor does not reach the working amount of water and a control unit for permitting the burner combustion, the mixture regulator, said It is provided at a position upstream from the connection position of the mist sauna line in the hot water supply line .
As a result, even when only a small amount of water that does not reach the amount of working water is used when the mist sauna is used, if the water amount sensor detects the small amount of water, the burner is burned by the control unit. It can be done reliably. In addition, the mixing controller adjusts the temperature of the hot water from the hot water outlet and the water from the bypass pipe to adjust the temperature of the hot water through the mist sauna pipe, so that the mist sauna uses only a small amount of water. Even if it exists, the warm water mist adjusted to desired mist setting temperature can be ejected from a mist nozzle. In addition, since the mist sauna line is connected to the outlet hot water line without providing a switching valve, hot water can be used even when the mist sauna is used.

And the said mixing regulator is provided in the upstream position rather than the connection position of the mist sauna pipe line in the said tapping hot water pipe line . That is , since the mixing controller is provided in the tapping pipe, the hot water adjusted to the desired mist setting temperature by the mixing controller is used not only in the mist sauna pipe but also in the tapping outlet while using the mist sauna. It is also supplied to the roadside. Therefore, the hot water adjusted to a mist set temperature lower than that of the hot water heated by the heat exchanger is passed to the side of the tap line that leads to the tap, so it can be used in kitchens, bathrooms, washrooms, etc. The temperature can be adjusted relatively quickly to a suitable hot water temperature (lower temperature than the mist set temperature).

(2) Moreover, the mist sauna combined hot water supply apparatus in this invention is the burner which heats a heat exchanger, the water supply line connected to the water inlet of the heat exchanger, and the hot water connected to the water outlet of the heat exchanger In a heat source device comprising a pipe and a water amount sensor provided in the water supply pipe, the mist sauna combined hot water supply apparatus provided with a mist sauna pipe connected to a mist nozzle of a bathroom with respect to the hot water supply pipe The bypass pipe for bypassing the water supply pipe and merging the water in the water supply pipe with the hot water from the outlet pipe, and mixing and adjusting the water from the bypass pipe and the hot water from the outlet pipe A mixing controller that adjusts the temperature to a desired mist set temperature, an on-off valve that is provided in the mist sauna conduit and that controls the flow or shut-off of the hot water that is temperature-controlled by the mixing controller, and the water amount sensor is constant. Detect the amount of working water And although Allow burner combustion and during mist sauna use the on-off valve is opened to detect the small amount of water the water sensor does not reach the working amount of water and a control unit for permitting the burner combustion, the mixing regulator but on the position upstream-off valve in the mist sauna conduit.
As a result, even when only a small amount of water that does not reach the amount of working water is used when the mist sauna is used, if the water amount sensor detects the small amount of water, the burner is burned by the control unit. It can be done reliably. In addition, the mixing controller adjusts the temperature of the hot water from the hot water outlet and the water from the bypass pipe to adjust the temperature of the hot water through the mist sauna pipe, so that the mist sauna uses only a small amount of water. Even if it exists, the warm water mist adjusted to desired mist setting temperature can be ejected from a mist nozzle. In addition, since the mist sauna line is connected to the outlet hot water line without providing a switching valve, hot water can be used even when the mist sauna is used.
And the said mixing regulator is provided in the upstream position rather than the on-off valve in the said mist sauna pipeline . That is , since the mixing controller is provided in the mist sauna pipe, hot water adjusted to a desired mist setting temperature by the mixing controller is supplied to the mist sauna pipe, but the outlet pipe leading to the outlet Hot water heated by a heat exchanger is supplied to the road side without passing through the mixing controller. Therefore, high-temperature hot water that is not affected by the mist set temperature can be passed to the side of the hot water outlet pipe that leads to the hot water outlet, and the temperature of the hot water discharged from the hot water outlet can be controlled regardless of the mist set temperature. For example, hot water having a temperature higher than the mist set temperature can be discharged from the hot water outlet.

As described above, according to the mist sauna combined hot water supply apparatus according to the present invention, hot water mist adjusted to a desired mist set temperature can be ejected from the mist nozzle even when using a mist sauna in which only a small amount of water is used. A comfortable mist sauna can be realized.
In addition, since the mist sauna line is connected to the hot water supply line without providing a switching valve so that the hot water can be used even when the mist sauna is used, the mist sauna and the hot water can be used simultaneously.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the mist sauna combined hot water supply apparatus according to the embodiment of the present invention is provided with a mist sauna conduit 2 connected to a mist nozzle 20 of a bathroom BR with respect to a heat source unit 1. In addition, a remote control 3 is connected to the heat source unit 1 by communication, and the remote control 3 is provided with an operation button for a hot water supply device, a mist sauna operation button, a hot water supply temperature setting unit, a mist temperature setting unit, etc. (not shown). ing.

The heat source unit 1 includes a heat exchanger 4, a burner 5, a water supply pipe 6, a tapping pipe 7, a control unit 8, and the like, and the mist sauna pipe 2 is branched and connected to the tapping pipe 7. .
The water supply pipe 6 is connected to the water inlet of the heat exchanger 4 and supplies tap water to the heat exchanger 4. The water supply pipe 6 is provided with a water amount sensor S. The water amount sensor S detects the presence / absence of water passing through the water supply pipe 6 and the amount of water, and is at least about 2 liters / minute. It can be detected if there is enough water.

  The hot water discharge pipe 7 is connected to the water outlet of the heat exchanger 4 and discharges hot water heat-exchanged from the heat exchanger 4. Further, a first bypass pipe 61 branched from the water supply pipe 6 is joined to the outlet pipe 7 at a position upstream from the branch of the mist sauna pipe 2, and a mixing valve is provided at the junction. (Mixing controller) 9 is provided. The mixing valve 9 mixes and adjusts the hot water from the hot water discharge line 7 and the tap water from the first bypass line 61 in accordance with a control command from the control unit 8, and a desired mist in the mist sauna line 2 downstream from this. Hot water adjusted to the set temperature is supplied. The mixing valve 9 can be constituted by, for example, a biaxial solenoid valve as shown in FIG. That is, the flow rate adjustment of the hot water from the hot water discharge line 7 is performed by adjusting the opening degree of the first valve 91, and the flow rate of tap water from the first bypass line 61 is adjusted by adjusting the opening degree of the second valve 92. Therefore, the temperature of the hot water supplied to the mist sauna pipeline 2 and the hot water pipeline 7 downstream from the mixing valve 9 is adjusted to a desired temperature.

  Further, a second bypass pipe 62 branched from the water supply pipe 6 is joined to the outlet hot water pipe 7 at a position upstream of the hot water tap 70, and a flow rate adjusting valve 63 is connected to the second bypass pipe 62. Is provided. A thermistor (temperature detector) T <b> 1 for detecting the hot water supply temperature to the hot water tap 70 is provided in the hot water discharge pipe 7 at a position downstream of the joining portion of the second bypass pipe 62. Based on the temperature detected by the thermistor T1, by adjusting the opening degree of the flow rate control valve 63, the presence or absence of the inflow of tap water from the second bypass conduit 62 to the tapping conduit 7 and the inflow amount thereof are adjusted. The hot water discharged from 70 is adjusted to a desired hot water supply temperature (for example, 30 ° C. to 50 ° C.). In addition, the said hot-water tap 70 is used as a hot-water supply port for supplying hot water in a kitchen, bathroom BR (including a shower and a bathtub), a bathroom, and the like.

  The mist sauna pipe 2 is provided with an on-off valve 21 for opening and closing the mist sauna pipe 2 and a thermistor (temperature detector) T2 for detecting the temperature of hot water flowing in the mist sauna pipe 2. ing. When the on-off valve 21 is opened, hot water is supplied to the mist sauna pipe 2 due to the water pressure in the water supply pipe 6 and ejected as mist from the mist nozzle 20 of the bathroom BR. The mist temperature, that is, the hot water temperature in the mist sauna conduit 2 is controlled to a desired mist set temperature (for example, 60 ° C., 70 ° C. or 80 ° C.) by controlling the mixing valve 9 based on the temperature detected by the thermistor T2. Adjusted.

  The control unit 8 is configured by a microcomputer or the like that is connected in communication with the remote control 3, such as a mist operation that uses a mist sauna or a hot water supply operation that uses hot water from the tap tap 70 by an operation signal from the remote control 3. Therefore, the operation of the hot water supply device is controlled. The control unit 8 controls the combustion of the burner 5 when the water amount sensor S detects the amount of working water (for example, 4 liters / minute) as the amount of water flowing through the water supply pipe 6 when hot water is used. When the sauna is used, the burner 5 is controlled to burn if the water amount sensor S detects a small amount of water (for example, 2 liters / minute) smaller than the working water amount as the amount of water flowing in the water supply pipe 6. In addition, the control unit 8 controls the combustion amount of the burner 5 and the flow rate adjustment valve 63 so that the temperature of the hot water from the hot water tap 70 is adjusted to the hot water supply set temperature of the remote controller 3, and also from the mist nozzle 20. The combustion amount of the burner 5 and the mixing valve 9 are controlled so that the mist temperature is adjusted to the mist set temperature of the remote controller 3.

Next, the operation of the mist sauna combined hot water supply apparatus will be described.
When the operation button of the remote controller 3 is turned on and the mist sauna operation button is turned on, the on-off valve 21 of the mist sauna pipeline 2 is opened. Then, tap water flows into the water supply pipeline 6 by tap pressure. At this time, when a small amount of water is detected by the water amount sensor S, burner combustion is permitted by the control unit 8 because the mist sauna is used with the on-off valve 21 opened. Thereby, the hot water heated by the heat exchanger 4 after the burner 5 is combusted is supplied to the tapping pipe 7.

The hot water supplied to the hot water outlet pipe 7 is mixed with tap water from the first bypass pipe 61 by the mixing valve 9 and supplied to the mist sauna pipe 2, and the mixed hot water is supplied to the mist nozzle of the bathroom BR. It is ejected as a mist from 20. The temperature of the hot water flowing through the mist sauna conduit 2 is detected by the thermistor T2, and mixed and adjusted by the mixing valve 9 so that the detected temperature becomes the mist set temperature of the remote controller 3. Thereby, from the mist nozzle 20, the mist of the desired mist setting temperature (for example, 60 degreeC, 70 degreeC, or 80 degreeC) set to the remote control 3 is ejected. In this way, the mist sauna is executed in the bathroom BR.
When the mist sauna operation button is turned off in the remote controller 3, the on-off valve 21 of the mist sauna conduit 2 is closed, the burner 5 is extinguished, and the mist sauna is terminated.

On the other hand, when the hot water tap 70 is opened and the hot water supply is used while the mist sauna is used, the hot water having reached the mist set temperature is passed through the hot water pipe 7 downstream of the mixing valve 9, and this hot water pipe 7 is mixed with tap water from the second bypass pipe 62 by the flow rate adjusting valve 63 of the second bypass pipe 62 and discharged from the hot water tap 70. The temperature of the hot water discharged from the tap tap 70 is detected by the thermistor T1 upstream of the tap tap 70, and the flow rate is adjusted so that the detected temperature becomes the hot water supply set temperature (for example, 30 ° C. to 50 ° C.) of the remote controller 3. The mixing is adjusted by the valve 63. Thereby, hot water having a desired hot water supply set temperature is discharged from the hot water tap 70. In this way, hot water supply at a desired hot water supply set temperature can be used even during use of the mist sauna.
During use of the mist sauna, the mixing valve 9 is provided in the tapping pipe line 7, so that the hot water adjusted to a desired mist setting temperature is connected not only to the mist sauna pipe 2 but also to the tapping tap 70. It is also supplied to the pipeline 7 side. Accordingly, since the hot water adjusted to a mist set temperature lower than the hot water heated by the heat exchanger 4 is passed to the side of the hot water pipe 7 leading to the hot water tap 70, the kitchen, the bathroom BR, and the washroom It is possible to adjust the temperature relatively quickly to a hot water temperature suitable for use in the environment (lower than the mist set temperature).

  Next, when the hot water tap 70 is opened and hot water supply is used when the mist sauna is not being used (when the operation button is turned on in the remote control 3 and the mist sauna operation button is in the off state), the water supply line 6 Burner combustion is permitted when the water amount sensor S detects a larger amount of working water than a small amount of water when the mist sauna is used as a flow rate of tap water flowing in the water. Thus, the hot water heated by the heat exchanger 4 is burned in the burner 5 and supplied to the tapping pipe 7, and the temperature detection of the thermistor T 1 upstream from the tapping tap 70 is detected by the hot water supply set temperature of the remote control 3. The flow rate adjustment valve 63 mixes and adjusts with tap water from the second bypass pipe 62 so that hot water having a desired hot water supply set temperature is discharged from the hot water tap 70.

  As described above, according to the hot water supply apparatus for mist sauna according to the present embodiment, a small amount of water (for example, 2 liters / minute) that does not reach the amount of working water (for example, 4 liters / minute) when hot water is used when using mist saunas. ) Even when only used, if the water amount sensor S detects the small amount of water, the burner 5 is burned by the control unit 8, so that the mist sauna can be used reliably by the hot water mist. Further, since the mixing valve 9 mixes and adjusts the hot water of the tap water pipe 7 and the tap water of the first bypass pipe 61 to supply the temperature-controlled hot water to the mist sauna pipe 2, only a small amount of water is used. Even when a sauna is used, hot water mist adjusted to a desired mist set temperature can be ejected from the mist nozzle 20. Therefore, a comfortable mist sauna can be realized.

Further, since the mist sauna pipe 2 connected to the mist nozzle 20 is branched and installed in the outlet hot water pipe 7 led out from the heat exchanger 4, a conventional switching valve is not interposed. Hot water can be used. Therefore, the mist sauna and the hot water supply can be used at the same time.
The present invention is not limited to the above embodiment, and various design changes can be made within the scope of the present invention.

For example, in the above embodiment, the mixing valve 9 is provided at a position upstream of the connection position of the mist sauna pipe 2 in the tapping pipe line 7, but as shown in FIG. A mixing valve 9 ′ may be provided at a position upstream of the on-off valve 21, and the first bypass pipe 61 may be connected to the mixing valve 9 ′.
In this case, since the mixing valve 9 'is provided in the mist sauna conduit 2, hot water adjusted to a desired mist set temperature by the mixing valve 9' is supplied to the mist sauna conduit 2; Hot water heated by the heat exchanger 4 is supplied to the side of the hot water supply pipe line 7 leading to the faucet 70 without passing through the mixing valve 9 '. Accordingly, hot water that is not affected by the mist set temperature even when the mist sauna is being used can be passed to the side of the tap line 7 leading to the tap tap 70, and the tap water is discharged from the tap tap 70 regardless of the mist set temperature. The temperature of the hot water can be adjusted. Therefore, for example, hot water having a temperature higher than the maximum temperature of the mist setting temperature can be discharged from the hot water tap 70.
Further, as the mixing valves 9, 9 ′, a biaxial solenoid valve as shown in FIG. 2 is used, but a uniaxial regulating valve may be used.

It is a schematic diagram which shows schematic structure of the mist sauna combined hot water supply apparatus by embodiment of this invention. It is a schematic diagram which shows an example of the mixing valve (mixing regulator) in the hot water supply apparatus combined with mist sauna. It is a schematic diagram which shows schematic structure of the mist sauna combined hot water supply apparatus by other embodiment of this invention. It is a schematic diagram which shows the structure of the spray apparatus for baths which can use the conventional mist sauna.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heat source machine 2 Mist sauna line 3 Remote control 4 Heat exchanger 5 Burner 6 Water supply line 7 Hot water supply line 8 Control part 9, 9 'Mixing valve (mixing regulator)
20 Mist nozzle 21 On-off valve 61 First bypass line (bypass line)
62 2nd bypass line 63 Flow control valve 70 Hot water tap BR Bathroom S Water quantity sensor T1, T2 Thermistor

Claims (2)

A burner for heating the heat exchanger, a water supply pipe connected to the water inlet of the heat exchanger, a hot water outlet connected to the water outlet of the heat exchanger, and a water amount sensor provided in the water supply pipe A mist sauna combined hot water supply apparatus provided with a mist sauna pipe connected to a mist nozzle of a bathroom with respect to the outlet hot water pipe,
A bypass line that bypasses the water supply line and merges the water in the water supply line with the hot water from the hot water discharge line;
A mixing controller for adjusting the temperature to a desired mist set temperature by mixing and adjusting the water from the bypass pipe and the hot water from the tapping pipe;
An on-off valve that is provided in the mist sauna conduit and that circulates or shuts off the hot water temperature-controlled by the mixing controller;
Control that allows burner combustion when the water amount sensor detects a certain amount of working water, but permits burner combustion when the water amount sensor detects a small amount of water that does not reach the working water amount when using the mist sauna with the open / close valve opened. and a part,
The mixing controller is a mist sauna combined hot water supply apparatus provided at a position upstream of a connection position of the mist sauna pipe line in the hot water supply pipe line . A burner for heating the heat exchanger, a water supply pipe connected to the water inlet of the heat exchanger, a hot water outlet connected to the water outlet of the heat exchanger, and a water amount sensor provided in the water supply pipe A mist sauna combined hot water supply apparatus provided with a mist sauna pipe connected to a mist nozzle of a bathroom with respect to the outlet hot water pipe,
A bypass line that bypasses the water supply line and merges the water in the water supply line with the hot water from the hot water discharge line;
A mixing controller for adjusting the temperature to a desired mist set temperature by mixing and adjusting the water from the bypass pipe and the hot water from the tapping pipe;
An on-off valve that is provided in the mist sauna conduit and that circulates or shuts off the hot water temperature-controlled by the mixing controller;
Control that allows burner combustion when the water amount sensor detects a certain amount of working water, but permits burner combustion when the water amount sensor detects a small amount of water that does not reach the working water amount when using the mist sauna with the open / close valve opened. and a part,
The mixing controller is a mist sauna combined hot water supply device provided upstream of the on-off valve in the mist sauna conduit .

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