JP2003294311A - Hot-water supply device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in an existing hot-water supply device where since hot water in an heat exchanger is always heated and retained in high temperature, even if warm water from a solar system exceeds set temperature set with a remote controller, the hot water having a lower temperature than a retaining temperature (for example 80°C) is heated to 80°C, and mixed with water, thus, the hot water in the solar system is not effectively used. <P>SOLUTION: This hot-water supply device is equipped with: a combustion means for heating hot water supplied from an other hot-water supply device supplied into the heat exchanger so that temperature detected with a hear exchanger temperature detecting means becomes the set heat exchanger target temperature; a hot-water mixing means for mixing hot water inside the heat exchanger heated with a combustion means with water sent from a water supply source and supplying hot water of set temperature set with the remote controller; and a hot water supply pipe supplying hot water mixed in the hot-water mixing means from a faucet. The heat exchanger target temperature is differently set when the set temperature with the remote controller is high or when it is appropriate. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion can body having a heat exchanger, a solar supply pipe for supplying hot water from a solar into the heat exchanger, and a hot water temperature in the heat exchanger. A heat exchanger temperature detecting means for detecting, and the solar power supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detecting means becomes a predetermined heat exchanger target temperature. Combustion means for heating hot water from
Hot water in the heat exchanger heated by the combustion means,
The present invention relates to a hot water supply device including hot / water mixing means for mixing hot water with hot water having a remote control set temperature, and a hot water pipe for discharging hot water mixed by the hot / water mixing means from a currant.

[0002]

2. Description of the Related Art Conventionally, a combustion can body having a heat exchanger, a solar supply pipe for supplying hot water from a solar into the heat exchanger, and a hot water temperature in the heat exchanger are detected. The heat exchanger temperature detection means of, and the hot water from the solar supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detection means reaches a predetermined heat exchanger target temperature. The combustion means for heating, the hot water in the heat exchanger heated by the combustion means, and the hot water mixing means for mixing hot water to generate hot water having a remote control set temperature, and the hot water mixing means. In a hot water supply device provided with a hot water discharge pipe for discharging the mixed hot water from the currant, the hot water in the heat exchanger is always heated and kept at a high temperature (for example, 80 ° C.). . Therefore, when the solar is connected, heating is performed when the temperature of the hot water supplied from the solar into the heat exchanger is lower than the heat retention temperature in the heat exchanger, and when it is high, it is mixed with water without heating. The hot water of the set temperature set with the remote control was coming out.

[0003]

[Patent Document 1] Japanese Patent Laid-Open No. 2001-108303 (page 3-5)

[0004]

In the conventional water heater,
The hot water in the heat exchanger is constantly heated and kept at a high temperature (for example, 80 ° C), so even when the hot water temperature from the solar is already above the set temperature set by the remote controller when hot water is supplied or hot water is removed. When the temperature is lower than the temperature (for example, 80 ° C.), it is heated to 80 ° C. and mixed with water, so that the hot water in the solar cannot be effectively used. That is, it was unnecessarily heated. Therefore, an object of the present invention is to provide a hot water supply device that does not heat as much as possible within a range that does not deteriorate usability when the temperature of hot water from the solar is higher than or equal to the set temperature already set by the remote controller during hot water supply or hot water removal. Especially.

[0005]

In order to achieve the above object, the first aspect of the present invention is to provide a combustion can body having a heat exchanger and hot water from a solar power source in the heat exchanger. A solar supply pipe, a heat exchanger temperature detecting means for detecting the temperature of hot water in the heat exchanger, and a heat exchanger target temperature in which the temperature detected by the heat exchanger temperature detecting means is predetermined. Combustion means for heating the hot water from the solar power supplied into the heat exchanger so that the hot water in the heat exchanger heated by the combustion means and water are mixed. In a hot water supply device comprising hot water mixing means for discharging hot water having a remote control set temperature and a hot water discharge pipe for discharging hot water mixed by the hot water mixing means from a currant, when the remote control set temperature is high and at an appropriate temperature. At the time of
Since the heat exchanger target temperature is controlled to be different, the heat exchanger target temperature is set to a high temperature (for example, 80 ° C.) when the high temperature is set (for example, 60 ° C.), and the appropriate temperature is set (for example, 40 ° C.). Sets the heat exchanger target temperature to a temperature slightly lower than the high temperature setting (for example, 70 ° C) so that the use of the calan does not become unusable, and even when the temperature is set appropriately, unnecessary combustion is possible even if it is a little higher than when the high temperature is set. The hot water in the solar can be used effectively without doing.

According to a second aspect of the present invention, a combustion can body having a heat exchanger, a solar supply pipe for supplying hot water from a solar into the heat exchanger, and a hot water temperature in the heat exchanger are detected. Heat exchanger temperature detecting means for, and hot water from the solar power supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detecting means reaches a predetermined heat exchanger target temperature. And a hot water mixing means for mixing hot water in the heat exchanger heated by the combustion means and water to generate hot water having a remote control set temperature, and the hot water mixing means. In a hot water supply device comprising a hot water outlet pipe for tapping hot water mixed from the currant, and hot water beam means for hot water hot water mixed in the bathtub, when hot water is tapped from the hot water With the hot water means Since the target temperature of the heat exchanger is controlled to be different when the hot water is poured into the tank, the target temperature of the heat exchanger is set to a high temperature (for example, 80 ° C.) when the currant is used. In this case, the heat exchanger target temperature is set to be lower than that when the currant is used (for example, 50 ° C.), so that the hot water in the solar is effectively used when hot water is applied without deteriorating the usability of the currant. be able to.

According to a third aspect of the present invention, a combustion can body having a heat exchanger, a solar supply pipe for supplying hot water from a solar into the heat exchanger, and a hot water temperature in the heat exchanger are detected. Heat exchanger temperature detecting means for, and hot water from the solar power supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detecting means reaches a predetermined heat exchanger target temperature. And a hot water mixing means for mixing hot water in the heat exchanger heated by the combustion means and water to generate hot water having a remote control set temperature, and the hot water mixing means. In a hot water supply device equipped with a hot water outlet pipe for tapping the mixed hot water from the currant, and hot water beam means for hot water mixed with hot water in the bathtub, when the hot water beam alone and the hot water beam And at the same time with the above-mentioned Karan Since the heat exchanger target temperature is controlled to different temperatures, when the hot water beam and the currant are used at the same time, the heat exchanger target temperature (for example, 60 ° C.) that can ensure hot water discharge performance is set, and the hot water beam alone is used. By setting the target temperature of the can at the time of use to be lower than the target temperature of the heat exchanger at the time of using the calan (for example, 50 ° C.), the hot water in the solar can be heated without deteriorating the usability during the simultaneous use. It can be used effectively.

A fourth aspect of the present invention is the hot water supply apparatus according to the second or third aspect, wherein in the combustion apparatus having a reheating means for reheating the hot water in the bathtub, heat is exchanged during the reheating. Since the target temperature of the vessel is heated to a high temperature (for example, 80 ° C.), the hot water in the solar can be effectively used during other operations without impairing the additional heating performance.

According to a fifth aspect of the present invention, in the hot water supply apparatus according to any of the first to fourth aspects, in the standby state in which none of hot water supply, hot water beam, and additional heating is used, the minimum heating temperature for reheating hot water to keep hot water in the can is provided. Since the temperature is maintained at a temperature (for example, 45 ° C.), the fuel is saved by not burning as much as possible during standby, and the hot water in the solar can be effectively used during other operations.

A sixth aspect of the hot water supply apparatus according to the first to fourth aspects is predetermined by mixing hot water sent from the other heat source with water even when the combustion operation is OFF. The hot and cold water in the solar can be used safely and effectively by providing the hot and cold water mixing means for discharging hot water having a temperature lower than the set temperature and the hot water pipe for discharging hot water mixed by the hot and cold water mixing means from the currant.

According to a seventh aspect, in the hot water supply apparatus according to the first to fourth aspects, even when the combustion operation is OFF, the hot water sent from the other heat source is mixed with water to turn off the combustion operation. It is safe and effective to use hot water in the solar by providing hot and cold water mixing means for hot water below the remote control set temperature just before the hot water and hot water mixing pipe for hot water mixed by the hot water mixing means from the currant. Can be used for

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of a hot water supply apparatus according to an embodiment of the present invention. As shown in the figure, the hot water supply device includes a combustion can body 1, a solar connecting pipe 17 for supplying hot water from a solar (not shown) to a heat exchanger 2 provided in the combustion can body 1, and a burner 13. The hot water in the heat exchanger 2 thus heated is composed of a hot water supply pipe 19 and a hot water supply pipe 11 for supplying the hot water to a hot water supply tap (not shown). In the heat exchanger 2,
A heat exchanger temperature sensor 9 for detecting the temperature of hot water in the heat exchanger 2 is provided. Further, the water supply pipe 10 is connected to the hot water supply pipe 19 without passing through the heat exchanger 2, and the water supply pipe 10 and the hot water supply pipe 1 are connected.
A mixing valve 18 for mixing and controlling the hot water in the heat exchanger 2 and the water sent from the water supply pipe 10 by the stepping motor M is provided at the confluence portion of 9. Also, the water supply pipe 10
In the inlet water temperature sensor 14 for detecting the temperature Tc of the water from the water supply source, and the outlet pipe 19 upstream of the mixing valve 18,
A heat exchanger outlet temperature sensor 15 that detects the outlet temperature Th of the heat exchanger 2, and a hot water supply pipe 11 downstream of the mixing valve 18 has a mixed hot water temperature detection sensor that detects the mixed hot water temperature Tm after mixing. 16 and a water amount sensor 8 for detecting the amount Q of hot water.

The burner 13 includes a fan 3 for supplying air required for combustion, a nozzle 5 for supplying kerosene to form a flame, a spark plug 6 required for ignition,
It is composed of CdS7 or the like that detects the presence or absence of a flame. Further, a kerosene supply pipe 12 for supplying kerosene to the nozzle 5 provided in the burner 13 is provided, and the kerosene supply pipe 12 is provided with an electromagnetic pump 4 for pumping kerosene to the nozzle 5.

Further, the bath heat exchanger 20 is provided in the heat exchanger 2.
Is provided and is connected to a circulation adapter 26 provided in a bathtub 27 via a bath-going pipe 24 and a bath-returning pipe 25. Further, the bath return pipe 25 is provided with a circulation pump 21 for stirring the hot water in the bath 27, and a hot water temperature Tf.
A bath return temperature sensor 22 for detecting the temperature of the bath and a bath water flow switch 23 for detecting the presence or absence of hot water are provided.
A hot water beam pipe 30 is connected from the downstream side of the water amount sensor 8 to the bath-outgoing pipe 24, and a hot water beam amount sensor 29 for detecting the hot water beam amount and a hot water beam to the bathtub 27 by opening and closing the hot water beam sensor 29 are provided. A hot water solenoid valve 28 for performing the above is provided. The water heater further includes the sensors 14,
Detection signals (Tc, Q, from 8, 15, 16, 9, 22)
Th, Tm, Tk, Tf) and a set temperature signal (Ts, Tsh) from a hot water supply temperature setting switch and a bath temperature setting switch provided on a remote controller (not shown), the electromagnetic pump 4, the circulation pump 21, the burner 13 A control unit (not shown) for controlling the mixing valve 18 and the like is also provided.

The hot water supply operation, the bath heating operation, and the operation when the combustion operation is off will be described based on the above configuration. Now, when the hot water supply device operation switch is turned on by the remote controller (not shown), even if hot water is not actually used by the faucet, etc. In order to keep the temperature of the hot water in the heat exchanger 2 at the lowest predetermined temperature (for example, 45 ° C.) which seems to be inconvenient to use, the burner 13 repeats on / off at the maximum combustion capacity. Then, when the use of the hot water is actually started, the hot water from the solar supplied from the solar connecting pipe 17 is heated and kept at a predetermined temperature (for example, 80 ° C.) in the heat exchanger 2 and discharged from the hot water pipe 19. Come on.

A control unit (not shown) controls the water temperature Tc detected by the water temperature sensor 14 of the water supply pipe 10 and the outlet pipe 1.
9 hot water outlet temperature T detected by the heat exchanger outlet temperature sensor 15
From h and the set hot water supply temperature Ts set by the remote controller by the user, the mixing ratio of the water flowing through the water supply pipe 10 and the hot water flowing through the hot water supply pipe 19 is adjusted so that the hot water after hot water mixing reaches the set hot water supply temperature. A calculation is performed and a control signal is output to the mixing valve 18 so that the calculated mixing ratio is achieved. As a result, the hot water from the hot water supply pipe 19 and the water from the water supply pipe 17 are mixed at an appropriate mixing ratio, and become hot water having the set hot water supply temperature set by the remote controller and flow into the hot water supply pipe 11. During this time, the burner 13 performs a combustion operation for maintaining the hot water in the heat exchanger 2 at a predetermined temperature (for example, 80 ° C.). Further, the reheating operation of the bath is performed by operating the circulation pump 21 so that the hot water in the bathtub 27 is indirectly heated by the hot water in the heat exchanger 2 via the bath heat exchanger 20. Not The hot water in the bathtub 27 is heated to the bath set temperature Tsh set by the remote control.

When the hot water supply device is turned off by the remote controller (not shown) and hot water is actually used, the hot water from the solar supplied from the solar connecting pipe 17 is transferred to the heat exchanger 2. It passes through the inside and comes out from the tap pipe 19. The control unit (not shown) detects the water temperature Tc detected by the water temperature sensor 14 of the water supply pipe 10,
The hot water outlet temperature Th detected by the heat exchanger outlet temperature sensor 15 of the hot water outlet pipe 19 and the set hot water supply temperature T set by the remote controller immediately before the user turns off the combustion operation switch.
From s, the mixing ratio of the water flowing through the water supply pipe 10 and the hot water flowing through the hot water discharge pipe 19 is calculated so that the hot water after hot water mixing reaches the set hot water supply temperature, and the calculated mixing ratio is obtained. A control signal is output to the mixing valve 18. As a result, the hot water from the hot water supply pipe 19 and the water from the water supply pipe 17 are mixed at an appropriate mixing ratio, and become hot water having a temperature equal to or lower than the set hot water supply temperature set by the remote controller immediately before the combustion operation switch is turned off. , Flows into the hot water supply pipe 11. During this time, the burner 13
Is hot water in the heat exchanger 2 at a predetermined temperature (for example, 80 ° C.)
No combustion operation is performed to maintain the temperature at.

Next, the operation of this embodiment will be described with reference to FIG. First, if the combustion operation is turned on at the start, it is determined in step S1 whether or not it is in a standby state. If it is on standby, the heat exchanger target temperature is set to 45 ° C. in step S2,
The warm water in the heat exchanger 2 is heated and kept at 45 ° C. Here, if it is not in standby, it is determined in step S3 whether or not additional firing is in progress. If it is being fired, step S
In step 4, the heat exchanger target temperature is set to 80 ° C., and the warm water in the heat exchanger 2 is heated and kept at 80 ° C. If it is not being heated, it is determined in step S5 whether hot water is being poured. If hot water is not being supplied, it is determined at step 6 whether hot water is being used. If hot water is being used, it is determined in step S7 whether the set hot water temperature is set to an appropriate temperature. If it is an appropriate temperature setting, the heat exchanger target temperature is set to 70 ° C. in step S8, and the hot water in the heat exchanger 2 is heated and kept at 70 ° C. Here, if it is not an appropriate temperature setting, the heat exchanger target temperature is set to 80 ° C. in step S9, and the hot water in the heat exchanger 2 is heated and kept at 80 ° C. Step S
If it is determined that hot water is being supplied in step 5, it is determined in step S10 whether hot water is being used. If hot water supply is not in use, the heat exchanger target temperature is set to 50 ° C. in step S11, and the hot water in the heat exchanger 2 is heated and kept at 50 ° C. Here, if hot water is being used, the heat exchanger target temperature is set to 60 ° C. and the hot water in the heat exchanger 2 is set to 60 ° C. in step S12.
And keep it warm so that By doing the above,
Since the hot water heating and keeping temperature in the heat exchanger 2 is changed by each operation, the hot water of the solar can be effectively used without deteriorating the usability. If the combustion operation is off at the start, the warm water in the heat exchanger 2 is not heated and kept warm.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a hot water supply device according to an embodiment of the present invention.

FIG. 2 is a control flow chart showing an embodiment of the present invention.

[Explanation of symbols]

1 ... Combustion can 2 ... Heat exchanger 3 ... fan 4 ... Electromagnetic pump 5 ... Nozzle 6 ... Spark plug 7 ... CdS 8 ... Water quantity sensor 9 ... Heat exchanger temperature sensor 10 ... Water pipe 11 ... Hot water supply pipe 12 ... Kerosene supply pipe 13 ... Burner 14 ... Inlet temperature sensor 15 ... Heat exchanger outlet temperature sensor 16. Mixed hot water temperature detection sensor 17 ... Solar connection tube 18 ... Mixing valve 19 ... Dewatering pipe 20 ... Bath heat exchanger 21 ... Circulation pump 22 ... Bath temperature sensor 23 ... Bath water flow switch 24 ... Bath going piping 25 ... Bath return piping 26 ... Circulation adapter 27 ... Bathtub 28 ... Hot water solenoid valve 29 ... Hot water amount sensor 30 ... Hot water beam tube

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Masanao Hattori             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. (72) Inventor Shigefumi Yasunaga             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. (72) Inventor Toshiharu Oe             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. (72) Inventor Hiroki Maruyama             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. (72) Inventor Hidenori Nagai             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. (72) Inventor Hiroki Kuwahara             43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo             Inside this Yupro Co., Ltd. F-term (reference) 3L024 CC05 DD04 DD05 DD13 DD16                       DD22 DD24 DD27 EE02 GG03                       GG04 GG05 GG07 GG22 GG32                       GG33 GG38 HH19 HH22 HH26                       HH30 HH31

Claims (7)

[Claims] 1. A hot water supply apparatus having a heat exchanger, the hot water supply pipe for supplying hot water from another hot water supply apparatus into the heat exchanger, and the hot water temperature in the heat exchanger is detected. Heat exchanger temperature detecting means for supplying the other hot water supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detecting means reaches a predetermined heat exchanger target temperature. Combustion means for heating hot water from the device, hot water in the heat exchanger heated by the combustion means, and water sent from a water supply source are mixed to generate hot water having a remote control set temperature. In a hot water supply device comprising hot water mixing means for discharging and hot water mixed by the hot water mixing means from a scallop, a hot water supply device is provided when the remote control set temperature is high and when the temperature is appropriate. It is possible to control the target temperature of the exchanger at different temperatures. And a water heater. 2. A combustion can body having a heat exchanger, a hot water supply pipe for supplying hot water from another hot water supply device into the heat exchanger, and a hot water temperature in the heat exchanger is detected. Heat exchanger temperature detecting means for performing, and the other hot water supplied into the heat exchanger so that the temperature detected by the heat exchanger temperature detecting means reaches a predetermined heat exchanger target temperature. Combustion means for heating the hot water from the supply device, hot water in the heat exchanger heated by the combustion means, and hot and cold water mixing means for mixing hot water to generate hot water of the remote control set temperature, A hot water supply apparatus comprising: a hot water outlet pipe for tapping hot water mixed by the hot and cold water mixing means from a curran; and hot water beam means for hot water hot water mixed in a bathtub. When the hot water is discharged from the A hot water supply device, wherein the heat exchanger target temperature is controlled to different temperatures when hot water is poured into a bathtub. 3. A combustion can body provided with a heat exchanger, a solar supply pipe for supplying hot water from another hot water supply device into the heat exchanger, and hot water temperature in the heat exchanger detected. From the solar power supplied to the heat exchanger so that the temperature detected by the heat exchanger temperature detection means for performing the heat exchanger temperature detection means becomes a predetermined heat exchanger target temperature. Combustion means for heating hot water, hot water in the heat exchanger heated by the combustion means, and hot water mixing means for mixing hot water to generate hot water having a remote control set temperature,
A hot water supply device comprising: a hot water outlet pipe for tapping hot water mixed by the hot and cold water mixing means from a currant; and hot water beam means for hot water hot water mixed in the bathtub. A hot water supply device, wherein the target temperature of the heat exchanger is controlled to different temperatures when used alone and when the hot water beam and the currant are used simultaneously. 4. The hot water supply apparatus according to claim 2 or 3, wherein the combustion apparatus includes a reheating means for reheating the hot water in the bathtub, and the heat exchanger is heated during the reheating. A hot water supply device characterized by heating and keeping a target temperature high. 5. The method according to claim 1, wherein the heat exchanger target temperature is heated and kept at a minimum temperature for re-releasing hot water during a standby time when neither hot water supply, hot water beam heating, nor additional heating is used. Item 4. A water heater according to item 4. 6. A hot water supply device having a structure in which water sent from a water supply source and hot water sent from another hot water supply device are connected to each other even when combustion operation is OFF. Hot water supply provided with hot water and hot water mixing means for mixing hot water with hot water having a temperature lower than a predetermined set temperature, and a hot water outlet pipe for hot water mixed by the hot water mixing means from hot water apparatus. 7. A hot water supply device having a structure in which water sent from a water supply source and hot water sent from another hot water supply device are connected to each other even when combustion operation is OFF. Combustion operation is OF by mixing warm water and water
A hot water supply apparatus comprising hot and cold water mixing means for discharging hot water having a temperature lower than a remote control set temperature immediately before being turned on, and a hot water discharge pipe for discharging hot water mixed by the hot and cold water mixing means from a currant.