JPS62210347A - Hot water supply and room heating device with additional burning function - Google Patents

Abstract

PURPOSE:To control combustion with a proportional control valve to stabilize hot water temperature and reduce cost by operating a proportional control valve with the signal which is processed by the signal from a thermistor, controlling the combustion of a burner, automatically supplying hot water in a large volume with the control signal from a supply water detection element and adding hot water by controlling a supply hot water flow rate control valve to a small flow rate, and adding hot temperature water. CONSTITUTION:When a water supply detecting element 22 detects water supply by operating an automatic hot water supply switch, a gas exhaust fan 12 starts rotation, a base electromagnetic valve 16, a proportional control valve 18 and a hot water supply electromagnetic valve are opened, and a hot water supply burner 19 starts to heat a heat exchanger 1. A flow rate control valve is controlled to a large flow rate in a control circuit 32 by the signal of the supply water detection element 22 and the output which is compared in order to give a set automatic supply hot water flow rate, and the temperature of the supply hot water is sensed by a thermistor 23. In order to have the temperature at a st temperature a control circuit 32 operates comparison and the combustion of the burner 19 is controlled by a control valve 18 to supply hot water automatically in a large flow rate to a bath tub 10. When an operation switch for hot temperature water addition is operated, the control valve 35 is controlled to a small flow rate so that a specified hot water addition flow rate is obtained, and the burner 19 is controlled to add hot temperature water in a small flow rate so that the hot water temperature reaches specified additional hot water temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a hot water heater with an additional heating function, which has functions of automatically supplying hot water to a bathtub and supplying high temperature.

Conventional technology In recent years, hot water heaters with reheating function have been developed to reheat baths using bathtub heaters, which consist of a water heater and an indirect heat exchanger installed in the heating hot water circulation path where hot water is circulated by a pump. At the same time, complex products that provide heating using radiators have been developed, and automatic hot water supply for baths is also progressing, including products that have added the function of automatically supplying hot water to the bathtub.

A conventional hot water heater with reheating function will be described below with reference to the drawings. FIG. 9 shows a schematic diagram of the configuration of the conventional example.

1 is a hot water supply heat exchanger connected to a water supply port 1a and a hot water supply port 1b. 2 is a heating heat exchanger connected to a hot water return port 2a and a hot water spout 2b.

A pump 3, an expansion tank 4, and a bypass pipe 5 are provided in a hot water passage leading from the hot water return port 2a to the heating heat exchanger 2, thereby forming a heating hot water circulation passage. An overflow pipe 6 is connected to the expansion tank 4.

A radiator 8 and a bathtub heater (hereinafter referred to as a bath heater) 9 connected to a bathtub 10 are branch-connected to the heating hot water circulation passage through a connecting pipe 7 .

An exhaust stack 11 is connected to each of the heat exchangers 1.2,
The configuration is such that an exhaust fan 12 discharges P Samurai exhaust gas to an exhaust port 13. It is also formed in a part of the case 15 so that combustion air can be supplied from the air supply port 14.

The fuel passage branches off from the main solenoid valve 16, connects to a hot water supply burner 19 through a hot water supply solenoid valve 17 and a proportional control valve 18, and connects to a heating burner 21 through a heating solenoid valve 20. .

Water supply detection element 2 that detects water supply in the water supply side passage and issues a signal
At the same time, a hot water supply thermistor 23 for detecting the temperature of hot water is provided at the outlet of the hot water supply heat exchanger 1.

The expansion tank 4 is provided with a water level switch 24 for detecting the amount of make-up water, and a heating thermistor 25 is provided at the outlet of the heating heat exchanger 2 for detecting the circulating water temperature.

A hot water supply pipe 27 connects the hot water heater 26 to a bathroom or kitchen, for example.
An automatic hot water supply unit 28, which is connected to the hot water supply port 1b and has a hot water supply control valve 29, a hopper 30, and a bathtub water level sensor 31 for automatically supplying hot water to the bathtub, is installed branching off from the hot water supply piping 27. Connect to 10.

In response to signals from the various sensors mentioned above, actuators (electromagnetic valves, pumps, etc.) are connected to a control circuit 32 and a remote controller.

It is configured to be operated by the button 33.

Next, to explain the operation, when the hot water heater 26 is opened, water flows into the water supply passage, the water supply detection element 22 is activated, and the main solenoid valve 16, the hot water supply solenoid valve 17, and the proportional control valve 18 are opened, and the hot water is supplied. The control circuit 32 calculates by igniting the fuel flowing into the hot water burner 19 and using the signal from the hot water supply thermistor 23 so that the hot water temperature will reach the hot water temperature set by the hot water temperature setting device (not shown) of the remote control 33. The proportional control valve is operated using the processed output to control the combustion amount of the hot water supply burner 19, thereby stably controlling the hot water temperature.

On the other hand, by operating a heating switch (not particularly shown) provided on the remote controller 33, when the water level switch 24 detects makeup water stored in the expansion tank 4 in advance, the pump 3 is turned down, and the former solenoid valve 16, The heating solenoid valve 20 opens, and the fuel flowing into the heating burner 21 is ignited.

Then, the temperature of the returned hot water being circulated is sensed, and the circulating water temperature is set by a signal from the heating thermistor 25 provided at the outlet of the heating heat exchanger 2 and a circulating hot water temperature setting device (not shown) of the remote controller 33. The control circuit 32 is operated, the heating solenoid valve 20 is operated, and the combustion amount of the heating burner 21 is controlled so that the water temperature is maintained, and the circulating hot water is stably controlled and branched to the connecting pipe 7. In addition to controlling the heating water temperature of the radiator 8 to heat the room, warm water is circulated to the bath heater 9 and warms water or hot water (bathtub water) stored in the bathtub 10 in advance to control the bathtub temperature. It is composed of

If you operate the automatic hot water supply operation switch (not shown) provided on the remote control 33, the hot water supply control valve 29 of the automatic hot water supply unit 28 will open and the automatic hot water supply set by the automatic hot water supply unit (not shown) on the remote control 33 will start. so that the temperature is
The output calculated by the control circuit 32 is used to control the proportional control valve 1.
8 and controls the combustion amount of the hot water supply burner 19 to stably control the temperature of hot water, thereby realizing automatic hot water supply to the bathtub 10. The water level sensor 31 automatically stops the hot water supply.

Problems to be Solved by the Invention However, in the above configuration, it is necessary to install the automatic hot water supply unit 28 in the immediate vicinity of the bathtub 10, and due to the structure of the building, it is difficult to install it when the bathroom is located in the center of the room. Not only is this not possible, but even if it were possible to install it on the wall, it would be unsightly on the exterior and aesthetics of the building, and because the water level sensor was fixed, it would not be possible to freely select the desired water level. .

When controlling the bathtub water temperature using a bath heater, there is no sensor to detect the bathtub water temperature, so if the bathtub water temperature is too high or the bathwater is cooled while taking a bath, the bathtub water temperature can be increased by operating the heating switch. Although it is necessary to heat up the room, there are problems such as it takes time to raise the temperature because the capacity of the heating burner is low. For this reason, many people often pour high-temperature water into the bathtub from the hot water tap (faucet), but the high temperature caused problems such as burns from the hot water tap and hot water.

The present invention addresses the above-mentioned problems and aims to provide an automatic hot water supply function that is inexpensive, easy to install, and effective in terms of workability and aesthetics.

Means for Solving the Problems In order to solve the above problems, the hot water heater with reheating function of the present invention is connected to a heat exchanger for hot water supply, a radiator, a bathtub heater, etc., and uses a pump to supply hot water. A heating heat exchanger in the circulating hot water circulation passage, a proportional control valve connected in series to the solenoid valve, and a hot water supply burner and a heating burner connected to each of the heat exchangers are connected to each other from the proportional control valve. A solenoid valve for hot water supply and a solenoid valve for heating that are branched and connected, a thermistor for hot water supply that is installed at the outlet of the heat exchanger for hot water supply and detects the temperature of hot water, and a solenoid valve for hot water supply that is installed at the outlet of the heat exchanger for heating to detect the circulating hot water temperature. a heating thermistor that detects water supply, a hot water supply flow control valve installed in the bathtub automatic hot water supply passage that branches from the hot water supply passage downstream of the hot water supply thermistor and connects to the bathtub, and a hot water supply flow control valve installed in the water supply passage of the hot water supply heat exchanger to A water supply detection element for measuring the amount of water supplied, a reheating thermistor provided in the bathtub heater for detecting the bathtub water temperature, and a reheating temperature control valve that opens and closes in response to the signal thereof are provided, and when hot water is supplied, the hot water supply thermistor signal, During heating, the proportional control valve is controlled by the signal from the heating thermistor to control the combustion amount of each burner to a set water temperature, and at the time of reheating, the bath water temperature is controlled by the signal from the reheating thermistor. and a control circuit for controlling the hot water temperature to a set temperature, the control circuit opening the hot water supply flow rate control valve and operating the proportional control valve in response to a control signal calculated based on the signal from the hot water supply thermistor. , controlling the combustion amount of the hot water supply burner to automatically supply hot water to the bathtub at a large flow rate according to the control signal (feedback) of the water supply detection element;
The hot water supply flow rate control valve is controlled to a small amount to supply high-temperature hot water through the bathtub automatic hot water supply passage, and the hot water supply flow control valve is closed at an arbitrary set amount by the water supply detection element to automatically stop hot water supply. Configure.

According to the above-described configuration, the present invention operates the proportional control valve with the output calculated by the control circuit based on the signal from the hot water supply thermistor to control the combustion amount of the hot water supply burner during hot water supply operation, thereby stabilizing the hot water temperature. In addition to being able to control
During heating operation, the proportional control valve is operated using the output calculated by the control circuit based on the signal from the heating thermistor to control the combustion amount of the heating burner, thereby stably controlling the circulating water temperature.

Furthermore, during the reheating operation, by roughly detecting the bathtub water temperature with the reheating thermistor provided in the bath heater, the reheating temperature control valve can be controlled to control the bathtub water temperature to the set water temperature.

Furthermore, during simultaneous operation, the control circuit operates the proportional control valve using the output computed in the hot water supply mode with priority to stably control the hot water temperature, and on the heating side, the heating solenoid valve is activated by the signal from the heating thermistor. By controlling the opening and closing, it is possible to stably control the temperature of the circulating water, so it is possible to control the temperature of the bathtub water by heating the room and reheating it.

Furthermore, during automatic hot water supply operation, by opening the hot water supply flow rate control valve, hot water is automatically supplied at a large flow rate from the hot water heat exchanger to the bathtub through the bathtub automatic hot water supply passage, and the temperature of the automatic hot water supply is controlled by the signal from the hot water supply thermistor. The proportional control valve is operated using the output calculated by the hot water supply burner, and hot water is automatically supplied to the bathtub by controlling the amount of combustion of the hot water supply burner. In addition, the hot water supply flow rate control valve can be closed at an arbitrary set amount using the water supply detection element, and the hot water supply can be automatically stopped, so that the automatic hot water supply operation can be completed without additional heating operation.

On the other hand, when hot water is cooled while taking a bath, by controlling the hot water supply flow rate control valve to a small flow rate and pouring hot water through the bathtub automatic hot water supply passage, it is possible to supply high-capacity water, reduce the number of parts, and automatically supply hot water. It is possible to achieve the purpose by reducing the cost of the function, making it easy to install, and making it effective in terms of construction and aesthetics.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the schematic diagram of the configuration shown in FIG.

Reference numeral 1 denotes a heat exchanger for hot water supply, which is connected to the water supply inlet 1a and the hot water supply inlet 1b, and includes a water supply detection element (such as a water amount sensor that counts the amount of water) 2 that detects water supply and outputs a signal in the water supply side passage.
It has 2. 2 is a heating heat exchanger connected to a hot water return port 2a and a hot water spout 2b. A pump 3 and an expansion tank 4 are installed in the hot water passage from the hot water return port 2a to the heating heat exchanger 2.
A bypass pipe 5 is provided to constitute a heating hot water circulation passage. An overflow pipe 6 is connected to the expansion tank 4.

The heating hot water circulation passage includes a bath heater 9 connected to a radiator 8 and a bathtub 10 through a connecting pipe 7, a reheating thermistor 38 provided in the bath heater 9 to detect the bathtub water temperature of the bathtub 10, and a reheating humidity control. A valve 137 is provided for branch connection.

An exhaust stack 11 is connected to each of the heat exchangers 1.2,
The exhaust fan 12 is configured to exhaust combustion exhaust gas to an exhaust port 13.

It is formed in a part of the case 15 as shown in FIG.

The fuel passage connects the solenoid valve 16 and the proportional control valve 18 in series, and branches from this to the hot water supply burner 19 through the hot water supply solenoid valve 17, and to the heating burner 21 through the heating solenoid valve 20, and then connects the proportional control valve to the heating burner 21 through the heating solenoid valve 20. Branch connections are made so that the valves 18 are connected in common.

Next, Figure 2 and 9I! , 3 will also be explained. During hot water supply operation, a hot water supply thermistor 2 is installed at the outlet of the hot water supply heat exchanger 1 to detect the hot water temperature.
The comparator 40 of the control circuit 32 compares and calculates the hot water temperature set by the signal No. 3 and the hot water additive setting device 39 of the remote controller a3, and the proportional control valve is driven by the output processed by the calculation processing section 41. The hot water supply operation control section 43 is configured to operate the proportional control valve 18 to control the combustion amount of the hot water supply burner 19 to stably control the temperature and humidity of the hot water supply (hot water supply operation sequence). .

On the other hand, during heating operation, the signal from the heating thermistor 25 installed at the outlet of the heating heat exchanger 2 for detecting the circulating water temperature and the heating hot water circulating temperature set by the circulating hot water temperature setting device 44 of the remote controller 33 are used. The comparator 4 of the control circuit 32
5, the arithmetic processing section 41 operates the proportional control valve driving section 42 with the arithmetic processed output, and operates the proportional control valve 18 to control the combustion amount of the heating burner 21. The circulating hot water is stably controlled and the heating water temperature of the radiator 8 connected to the connecting pipe 7 is controlled to heat the room, and the hot water is circulated to the bath heater 9 to heat the bathtub 1.
Heating hot water circulation to control the bathtub temperature by warming pre-stored water or hot water (bathtub water) (
The heating operation control unit 46 is configured as follows (heating operation sequence).

The hot water supply solenoid valve 17 and the heating solenoid valve 20 constitute a hot water supply operation control section 43 and a heating operation control section 46 so as to open and close the valves when controlling the respective hot water temperatures.

In addition, during the reheating operation, the comparator 48 of the control circuit 32 adjusts the signal of the reheating thermistor 38 provided in the pass heater 9 to match the bathtub temperature set by the bath Wi hot water temperature setting device 47 of the remote controller 33. , the proportional control valve drive section 42 is operated with the output processed by the arithmetic processing section 41 to operate the proportional control valve 18 , and the heating burner 2 is operated.
The reheating operation control section 49 is configured to combust the water and control the opening/closing of the reheating temperature control valve 37 to stably control the bathtub water temperature (reheating operation sequence).

In addition, during simultaneous operation, the hot water supply operation control section 43 of the control circuit 32 operates the proportional control valve drive section 42 preferentially in the hot water supply mode using the output computed by the arithmetic processing section 41 to operate the proportional control valve 18. At the same time, the heating side controls the opening and closing of the heating solenoid valve 20 using the signal from the heating thermistor 25 to stably control the circulating water temperature (simultaneous operation sequence). The heating operation control section 46 is grooved.

Furthermore, during automatic hot water supply operation, a hot water supply flow control valve 34 (which is driven by a motor or the like and has a function of controlling small and large flow rates and closing the valve (a schematic diagram is shown in Fig. 5) and a safety valve 34 (
A vacuum breaker) is provided in a branched connection from the hot water supply passage downstream of the hot water supply thermistor 23, and connected to the bath 1'%l1710 through the bathtub automatic hot water supply passage 36.

Then, by opening the hot water flow rate control valve 35 at a large flow rate in response to a signal from the hot water supply operation control section 43, a signal from the hot water supply thermistor 23 and an automatic control signal from the remote controller 33 are transmitted through the hot water heat exchanger 1. The comparator 40 of the control circuit 32 performs a comparison calculation so that the automatic hot water temperature set by the hot water temperature setting device 50 is reached, and the output processed by the calculation processing unit 41 is used to drive the proportional control valve drive unit. 42 to operate the proportional control valve 18 to control the combustion amount of the hot water supply burner 19 to stably control the hot water supply m temperature.
Automatically supply hot water at a large flow rate to 0 (automatic hot water supply operation sequence)
At the same time, the hot water supply operation control section 43 is entirely configured so that the water supply detection element 22 closes the hot water supply flow rate control valve 35 at an arbitrary set amount and automatically stops hot water supply.

In addition, during hot water pouring operation, the hot water supply flow rate control valve 35 (
A device that is driven by a motor or the like and has a small flow rate control and a large flow rate control function and a valve closing function (a schematic diagram is shown in FIG. 5) is automatically set to a low flow rate, and the hot water temperature setting of the remote controller 33 is performed. By automatically setting the temperature of hot water to the temperature set by the hot water supply device 51 (located inside the remote control) (for example, about 80°C), the hot water is passed through the hot water supply heat exchanger 1 and heated to the hot water supply thermistor. 23 and the hot water temperature set by the high temperature hot water temperature setting device 51, the ratio 1 bite device 40 of the control circuit 32 performs a comparison operation, and the arithmetic processing unit 41 performs arithmetic processing. The proportional control valve driving section 42 is operated with the output, and the proportional control valve 18 is operated to control the combustion amount of the hot water supply burner 19 to stably control the hot water temperature and supply the bathtub 10 with a small flow rate. The hot water supply operation control unit 4 controls the hot water supply operation control unit 4 to supply hot water at a high temperature (high temperature pouring hot water operation sequence).
It consists of 3.

Next, the hot water supply capacity characteristic diagram shown in FIG. 4 and the driving schematic diagram of the hot water supply flow rate control valve shown in FIG. 5 will be explained.

FIG. 4 is a hot water supply capacity characteristic diagram of the hot water supply heat exchanger 1. In the case of automatic hot water supply operation (A), the hot water supply temperature is set by the automatic hot water supply temperature setting device 50 (for example, about 42'C > hot water temperature In this case, the control circuit 32 is set so that the automatic hot water supply flow rate (for example, 10 minutes) is set by the automatic hot water supply flow rate setting device 52 shown in FIG.
The comparator 54 performs a comparison operation, and the arithmetic processing unit 55 (which may be the same as the arithmetic processing unit 41) operates the hot water supply flow rate control valve drive unit 56 to drive the motor of the hot water supply flow rate control valve 35. 35a.

The gear 35d connected to the flow control valve 35e is rotated in conjunction with the gear 35c provided on the motor shirt 35b. The flow rate control valve shaft 35e has a threaded portion 35f, and a control valve 35g and a spring 35h are provided at the tip.
It is incorporated into the control valve main body 35i.

The control valve part 35g has a small flow rate, a large flow rate, and a valve closing function for controlling the amount of hot water supplied by the gap between the valve seat 35], so a large flow rate flows, and the automatic hot water supply flow rate is calculated and measured by the water supply detection element 22. The hot water supply flow rate control valve 35 is configured to control the flow rate to a set flow rate.

Further, the automatic hot water supply setting amount set by the automatic hot water supply cumulative flow rate setter 53 of the remote controller 33 (automatic hot water supply cumulative flow rate corresponding to the desired water level for the bathing facility: for example, about 180 t) is cumulatively measured by the water supply detection element 22. and.

The hot water supply flow rate control valve 35 is automatically closed to stop automatic hot water supply.

On the other hand, in the case of high-temperature pouring hot water operation (B), the high-temperature pouring hot water temperature setting device 51 sets the temperature (for example, about a o'c
>When the hot water temperature is set, press the high temperature hot water flow rate setting device 57 in Figure 5.
The comparator 54 of the control circuit 32 performs a comparison operation so that the flow rate of high-temperature pouring hot water (for example, approximately sty) is reached, and the arithmetic processing section 54 (which may be the same as the arithmetic processing section 41)
The hot water supply flow rate control valve drive unit 56 is operated with the output calculated in , and the motor 35a of the hot water supply flow rate control valve 35 is driven.

The system is configured such that a small amount of water is flowing, the flow rate of hot hot water is detected by the water supply detection element 22, and the flow rate is controlled by the hot water supply flow rate control valve 35 to a set flow rate.

The operation of the above embodiment will be explained with reference to the front view of the remote control shown in FIG. 6 and the flowchart shown in FIG. 7.

■After operating the hot water supply operation switch 33a of the hot water supply operation remote control 23,
When you open the hot water heater 26 connected to the hot water supply pipe 27 connected to the hot water inlet 1b, for example in the bathroom or kitchen,
The operating program shown in FIG. 7 starts. Step 58
Automatic hot water supply? , step 59 hot water? , Step 60 hot water supply? , step 61 heating? The system determines either of these and enters the hot water supply operation mode.

The water flowing through the water supply passage is detected by the water supply detection element 22 in step 62.
When the cod number is measured and the amount of ignition water is detected, step 63
The hot water supply operation control unit 43 is configured to operate the hot water supply operation sequence, and the exhaust fan 12 rotates.

The main solenoid valve 16, the hot water supply solenoid valve 17, and the proportional control valve 18 are opened to keep the fuel ignited. (The ignition holding means is not particularly shown.) The hot water supply heat exchanger 1 is heated by combustion of the hot water supply burner 19, and hot water is discharged from the hot water tap 26 through the hot water supply port 1b.

The hot water supply temperature is detected by the hot water supply thermistor 23, and in steps 64 and 65, the comparator 40 of the control circuit 32 performs a comparison calculation so that the hot water temperature becomes the hot water temperature set by the hot water temperature setting device a9 of the remote control 3a. , operate the proportional control valve drive unit 42 with the output processed by the calculation processing unit 41 to operate the proportional control valve 1, and control the combustion amount of the hot water supply burner 19 to stably control the hot water temperature. do.

(2) Heating operation and reheating operation On the other hand, by operating the heating operation switch 33b provided on the remote control 33, the heating operation in step 61 is performed. It is determined that the heating operation mode is activated.

Supply water pre-stored in the expansion tank 4 to the water level switch 2
When step 4 is detected, the pump 3 is operated, the heating thermistor 25 senses the temperature of the returned hot water, and step 6
The heating operation control unit 46 is configured to operate the heating operation sequence No. 6, and the exhaust fan 12 is connected to the frontispiece, the solenoid valve 16, the proportional control valve 18. The heating solenoid valve 20 is opened to keep the fuel ignited. (The N fire holding means is not particularly shown.) The heating heat exchanger 2 is heated by the combustion of the heating burner 21, and the hot water is circulated from the hot water spout 2b through the connecting pipe 7 to the radiator 8 and the bath heater 9. , hot water return port 2
Hot water is circulated through a. Steps 67 and 68 set the returning hot water temperature to the heating hot water circulation temperature set by the signal from the heating thermistor 25 and the circulation hot water temperature setting device 44 of the remote control 33 (fixed setting inside the remote control).
Then, the comparator 45 of the control circuit 32 performs a comparison operation, and the output processed by the arithmetic processing section 41 is used as the proportional control drive section 42.
is operated, the proportional control valve 18 is operated, the combustion amount of the heating burner 21 is controlled, the circulating hot water is stably controlled, and the heating water temperature of the radiator 8 branched to the connecting pipe 7 is controlled. At the same time, hot water is circulated to the bath heater 9, which warms the water or hot water (bath water) stored in advance in the bath 1 (IJlo) and controls the temperature of the bath 1. Control temperature.

Therefore, by opening and closing hot water to the bath heater 9 using a pulp cock or the like, it is possible to freely reheat the bath.

If reheating operation is still to be performed, by operating the automatic hot water supply operation switch 33c of the remote controller 33, the automatic hot water supply operation mode shown in the flowchart shown in FIG. When the operation control part 49 is configured, the exhaust fan 12 rotates as in the heating operation mode, and the solenoid valve 16. The proportional control valve 18 and the heating solenoid valve 20 are opened to keep the fuel ignited.

(The ignition holding means is not particularly shown.) Then, as the heating burner 21 burns, the heating heat exchanger 2 is heated, and the heated water is circulated from the hot water spout 2b through the connecting pipe 7 to the radiator 8 and the bath heater 9. Hot water return port 2
Hot water is circulated through a.

The reheating thermistor 38 installed in the bath heater 9 detects the approximate bath water temperature, and the bath is heated to the temperature set by the signal and the bath water temperature setting device 47 of the remote control 33 in step 7o. In step 71, the reheating temperature control valve 37 is opened and closed to control the bathtub water temperature.

By doing this, the bath can be automatically heated (automatic hot water supply operation), and the bath will not be overheated, allowing you to enjoy a comfortable bath life.

II. Automatic hot water supply operation Also, automatic hot water supply operation switch 33 provided on the remote control 33
dt- When operated, the hot water supply flow rate control valve 35 is activated in step 72.
The valves are opened, and the hot water supply heat exchanger 1 and the bathtub automatic hot water supply passage 3 are opened.
Hot water is automatically supplied to the bathtub 10 through 6.

In step 73, the control unit 43 is configured to measure the signal from the water supply detection element 22, and the exhaust fan 12 rotates.

Original solenoid valve 16, proportional control valve 18. The hot water supply electromagnetic valve 17 is opened to keep the fuel ignited. (The ignition holding means is not particularly shown.) The hot water supply heat exchanger 1 is heated by the combustion of the hot water supply burner 19, and the hot water supply flow rate control valve 35 is heated.
Hot water is automatically supplied to the baths 10 through the bathtub automatic hot water supply passage 36. In steps 75 and 76, the signal from the comparator 54 of the control circuit 32 and the water supply detection element 22 is set to the automatic hot water supply flow rate (for example, 10 t/min) set by the automatic hot water supply flow rate setting device 52 in FIG. Perform a comparison operation with
The hot water supply flow rate control valve drive unit 56 is operated using the output processed by the calculation processing unit 55, and the hot water supply flow rate control valve 35 is controlled to have a large flow rate, thereby automatically supplying hot water.

Step 7
7 and step 78, the comparator 40 of the control circuit 32 performs a comparison operation, and the arithmetic processing section 41 operates the proportional control valve drive section 42 with the output processed, thereby operating the proportional control valve 18 and controlling the hot water supply burner 19. By controlling the amount of combustion of water, the hot water temperature is stably controlled to the automatic hot water supply setting humidity, and hot water is automatically supplied to the bathtub 10 at a large flow rate.

Furthermore, the automatic hot water supply setting amount set by the automatic hot water supply cumulative flow rate setter 53 of the remote control 33 (automatic hot water supply cumulative flow rate corresponding to the desired water level in the bathtub: for example 180 g) is detected by the water supply detection element 2.
When the cumulative measurement in step 2 reaches the set amount in step 79, the hot water supply flow rate control valve 35 is automatically closed in step 8o to stop automatic hot water supply, and the hot water is supplied to the bathtub 10 at the desired bath boiling temperature and at the desired location. It is possible to complete the automatic hot water supply operation to any desired water level during the period without reheating operation.

The safety valve (vacuum breaker) 34 is set to automatic hot water supply ■, high-temperature pouring hot water operation.If the hot water is cooled while taking a bath, etc., by operating the high-temperature pouring hot water operation switch 33e of the remote control 33, the high-temperature pouring hot water operation mode is activated in step 59. If determined, the hot water supply flow rate control valve 35 is opened in step 81, and high temperature hot water is poured into the bathtub 10 through the hot water supply heat exchanger 1 and the bathtub automatic hot water supply passage 36.

In step 82, the signal from the water supply detection element 22 is measured, and when the water supply is detected, the hot water supply operation control unit 43 is configured to operate the high temperature pouring hot water operation sequence in step 83, and the exhaust fan 12 rotates. .

The main solenoid valve 16, the proportional control valve 18, and the hot water supply solenoid valve 17 are opened to keep the fuel ignited. (The ignition holding means is not particularly shown.) The hot water supply heat exchanger 1 is heated by the combustion of the hot water supply burner 19, and the hot water supply flow rate control valve 35 is heated.
In step 84 and step 85, the comparator 54 of the control circuit 32 and the signal of the water supply detection element 22 are compared and calculated so that the flow rate of the automatic hot water supply passage in the bathtub becomes vortex flow rate (for example, about 517 minutes). The hot water supply flow rate control valve drive unit 56 is operated with the output computed in step 54, and the hot water supply flow rate control valve 35 is controlled at a small flow rate, and the high temperature hot water temperature setter 51 of the remote control 33 (inside the remote control) is operated. In step 86 and step 87, the comparator 40 of the control circuit 32 performs a comparison calculation so that the hot water temperature reaches the preset temperature (for example, about 80°C) (which is a fixed setting). 41
The proportional control valve drive unit 42 is operated by the output calculated in , the proportional control valve 18 is operated, and the combustion amount of the hot water supply burner 19 is controlled to stably control the temperature of the hot water to be supplied to the bathtub 10 with a small flow rate. It can be heated to high temperatures.

The flow of hot water supply can be controlled by the high-capacity hot water supply burner 19 by controlling the control valve 35 to a small flow rate and supplying high-temperature hot water through the bathtub automatic hot water supply passage 36, so that the bath can be reheated in a short time. It is possible to raise the temperature and there is no risk of burns.

Effects of the Invention As described above, the present invention provides a heat exchanger for hot water supply, a heating heat exchanger for a hot water circulation passage connected to a radiator, a bathtub heater, etc., and circulating hot water using a pump, and a former solenoid valve. a proportional control valve connected in series, and a solenoid valve for hot water supply and a solenoid valve for heating branched from the proportional control valve and connected to each of the hot water supply burner and the heating burner that are connected to each of the heat exchangers; A hot water supply thermistor is installed at the outlet of the hot water supply heat exchanger to detect the hot water temperature, a heating thermistor is installed at the outlet of the heating heat exchanger to detect the circulating water temperature, and a hot water supply thermistor downstream of the hot water supply thermistor is installed at the outlet of the heating heat exchanger. A hot water supply flow control valve provided in a bathtub automatic hot water supply passage branching from the passageway and connected to the bathtub; a water supply detection element provided in the water supply passage of the hot water supply heat exchanger for calculating and measuring the water supply amount; and a water supply detection element provided in the bathtub heater. A reheating thermistor for detecting the temperature of hot water in the bathtub, a reheating temperature control valve that opens and closes according to the signal thereof, and a signal from the hot water thermistor when hot water is supplied;
Also, during heating, the proportional control valve is controlled by the signal from the heating thermistor to control the combustion amount of each burner to a set hot water temperature, and when reheating, the bathtub water is controlled by the signal from the reheating thermistor. and a control circuit that controls the hot water temperature to a set water temperature, and the control circuit opens the hot water supply flow rate control valve and operates the proportional control valve using a control signal that is calculated using the signal from the hot water supply thermistor. The combustion amount of the hot water supply burner is controlled to automatically supply hot water to the bathtub at a large flow rate based on the control signal (feedback) of the water supply detection element, and the hot water supply flow rate control valve is controlled to a small flow rate to supply hot water to the bathtub. By supplying hot water through the bathtub automatic hot water supply passage and closing the hot water supply flow rate control valve at an arbitrary set amount using the water supply detection element to stop automatic hot water supply, the following effects can be obtained.

(1) For both hot water supply and heating, a single proportional control valve proportionally controls the amount of combustion to control the hot water temperature, making it possible to stabilize the hot water temperature.

(2) Since the automatic hot water supply function and automatic high temperature hot water pouring function are built into the main unit, the cost can be reduced, installation can be done freely, and construction workability can be improved, and the aesthetics of the building will not be affected. .

(3) By using the water supply detection element as a water flow sensor that counts the amount of water supplied, it is possible to open and close the hot water supply flow rate control valve and to set a large flow rate or a small flow rate, as well as detect the amount of ignition/extinguishing water as in the conventional method. can do.

(4) Hot water can be supplied automatically with the bathtub lid closed, so there is no leakage, and it is economical because it saves energy.

(5) The bath can be heated to the desired temperature only by automatic hot water supply operation without reheating, and the bath boiling time is shortened, making life economically comfortable for junior high school and junior high school students. I can do it.

(6) During automatic hot water supply, the amount of hot water corresponding to the desired water level in the bathtub can be set arbitrarily, unlike conventional fixed systems, so it is possible to automatically stop the hot water supply to the bathtub, and the water level in the bathtub can be detected. Does not require a water level sensor.

(7) When cooling water while taking a bath, by controlling the hot water flow through the hot water supply flow rate control passage, it can be controlled using a high-capacity hot water supply burner, so the bath can be reheated and heated in a short time, and There is no risk of burns.

(8) By freely selecting and controlling the automatic hot water supply function, automatic high temperature hot water supply function, and reheating function, economically comfortable,
You can live in the bath.

(9) It has a heating function, so you can enjoy a warm bath while heating the bathroom, washroom, dressing room, etc. in winter, and by using the bath heater to reheat the bath and hot water. , it is possible to raise the temperature in a short time when cooling with hot water.

(10) Even when reheating the water the next day, the automatic water supply operation allows you to increase the temperature of the bath water and set it to the desired bath boiling temperature, which saves energy and is economical. It is.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the configuration of a hot water heater with reheating function showing the second actual flow side of the present invention, Figs. 2 and 3 are the same figure, and Fig. 5 is a schematic diagram of driving the hot water flow rate control valve. FIG. 6 is a front view of the remote control, FIGS. 7 and 8 are flowcharts, and FIG. 9 is a schematic diagram of the configuration of a conventional example. 1... Heat exchanger for hot water supply, 2... Heat exchanger for heating 3... Pump, 4... Expansion tank, 8...・Radiator 9... Bath heater, 10... Bathtub, 16... Original solenoid valve,
17... Solenoid valve for hot water supply, 18... Proportional control valve, 19... Burner for hot water supply, 20...
... Solenoid valve for heating, 21 ... Burner for heating, 2
2...Water supply detection element, 23...Hot water supply thermistor, 24...Water level switch, 25...
... Heating thermistor, 32 ... System 33.
... Remote control, 35 ... Hot water supply flow control valve, 36 ... Bathtub automatic hot water supply passage, 37 ...
- Reheating temperature control valve, 38... Reheating thermistor. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 1 - Complementary coating 2 - Connection test Figure 2 Figure 2
---Bath heater 10-Ichiyumiya tank No. 3 Figure 37- Shin-burned rice bowl 38-・Sako-Fukasu-Misno 47-1--Bathroom turbidity on forehead" Kanpo introduction-Comparator Figure 4 33- m-Remote control 336L--One turn Δ'' Storage payout/edge 33b--Heating operation switch 33cm-One-day heating switch 33d--One-day operation heating reaching Genkentsuchi 33e--One day transmission Pictured 4 continuous coffin switch 3q--One-piece easy-to-leak temperature setting device Fig. 6 47.--Tank hot water overflow device 50---Fluid hot water station temperature setting device 53--One step #Dry integration membrane 33 33tx 33cl 33e
33b 33c Broom 7 Figure 8

Claims (1)

[Claims] A heat exchanger for hot water supply, a heating heat exchanger in a hot water circulation passage that is connected to a radiator, a bathtub heater, etc. and circulates hot water using a pump, a proportional control valve connected in series to the original solenoid valve, and a proportional control valve connected in series to the original solenoid valve. A solenoid valve for hot water supply and a solenoid valve for heating are branched and connected from the proportional control valve to each of the hot water supply burner and the heating burner facing into the exchanger, and are provided at the outlet of the hot water supply heat exchanger, A hot water supply thermistor that detects the hot water temperature, a heating thermistor that is installed at the outlet of the heating heat exchanger and detects the circulating water temperature, and an automatic bathtub that branches from the hot water supply passage downstream of the hot water supply thermistor and connects to the bathtub. A hot water supply flow rate control valve provided in the hot water supply passage; a water supply detection element provided in the water supply passage of the hot water supply heat exchanger to calculate and measure the amount of water supplied; and a reheating element provided in the bathtub heater to detect the bathtub water temperature. A reheating temperature control valve that opens and closes according to a thermistor and its signal, and a signal from the hot water supply thermistor when hot water is being supplied, and a proportional control valve that is controlled by a signal from the heating thermistor during heating to set the combustion amount of each burner. and a control circuit that controls the hot water temperature of the bathtub to a set water temperature based on a signal from the reheating thermistor during reheating, and the control circuit opens the hot water flow rate control valve. The proportional control valve is actuated by a control signal calculated using the signal from the hot water supply thermistor, and the amount of combustion of the hot water supply burner is controlled to be sent to the bathtub. At the same time, the hot water supply flow rate control valve is controlled to a small flow rate to supply high-temperature hot water through the bathtub automatic hot water supply passage, and the water supply detection element is used to control the hot water supply flow rate control valve at an arbitrary set amount. A hot water heater with a reheating function configured to automatically stop hot water supply by closing the valve.