JPH04155147A - water heater - Google Patents

Abstract

PURPOSE:To obtain a hot-water supply apparatus which is always comfortable to use and allows even the aged and children to use safely, by a method wherein the hot-water temperature is decided according to the skin temperature of a user, and a heater is controlled so that water is heated up to the decided temperature. CONSTITUTION:Water is supplied to a heat exchanger 27 through a water supply pipe 28, hot water is supplied to a specified place from the heat exchanger 27 through a hot-water supply pipe 29, and a heater 30 heats the heat exchanger 27. A flow sensor 31 detects the flow rate (Qw) of water flowing through the water supply pipe 28, and a hot-water temperature sensor 32 detects the hot-water temperature in the hot-water supply pipe 29. A skin temperature detector 33 detects the skin temperature of a user, and a temperature setting device 34 decides a set temperature according to the skin temperature of the user. A controller 35 controls the heater 30 according to signals from the flow sensor 31 and the hot-water temperature sensor 32 so that water is heated up to the set temperature decided by the temperature setting device 34. Since the hot-water temperature is decided corresponding to the skin temperature of the user, hot water at a comfortable temperature can be always supplied and allows even the aged and children to use it without anxiety.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water heater using gas, oil, electricity, or the like as a heating source.

2. Description of the Related Art Conventionally, water heaters of this type have been of the type shown in FIGS. 9 and 10, for example.

The following description will be made based on the attached drawings. The solid arrows in the diagram indicate signal lines or power cords that transmit control signals.
The dashed arrow indicates the direction of flow of hot water.

First, the conventional example shown in FIG. 9 will be explained.

a heat exchanger l; a water supply channel 2 that supplies water to the heat exchanger 1;
a hot water supply path 3 that supplies hot water from the heat exchanger 1 to a predetermined location;
A heating unit 4 that heats the heat exchanger 1, a flow rate sensor 5 that detects the flow rate of water flowing through the water supply channel 2, a hot water outlet temperature sensor 6 that detects the temperature of hot water flowing through the hot water supply channel 3, and a predetermined constant temperature hot water outlet temperature. The hot water temperature storage unit 7 stores the hot water temperature and the hot water temperature storage unit 7 stores the hot water temperature.
It was comprised of a control section 8 that controls the heating section 4 based on signals from a flow rate sensor 5 and a hot water outlet temperature sensor 6 so that the hot water outlet temperature reaches a predetermined constant temperature that has been input in advance.

In addition, the control unit 8 includes a comparison determination unit 9 that compares and determines the constant-temperature outlet temperature that has been input into the outlet hot water temperature storage unit 7 and the outlet hot water temperature detected by the outlet hot water temperature sensor 6, and a signal and flow rate from the comparison and decision unit 9. It consisted of a calculation section 10 that calculates the amount of heating based on the flow rate from the sensor 5, and a heating control section 11 that controls the heating section 4 so that the amount of heating determined by the calculation section 10 is achieved. Further, 12 is a hot water outlet terminal at the end of the hot water supply path 3.

In this configuration, when the hot water tap terminal 12 is opened, the flow rate sensor 5 detects the flow of water, and the hot water tap temperature storage section 7 detects the flow of water.
The comparison determination section 9 compares and determines the hot water outlet temperature detected by the hot water outlet temperature sensor 6 of the hot water supply path 3 and the predetermined constant temperature hot water outlet temperature so that the hot water outlet temperature becomes the predetermined constant temperature outlet temperature stored in the hot water supply path 3. The amount of heating to be added is calculated from the result and the flow rate detected by the flow rate sensor 5 in the calculation unit IO, and the heating control unit 11 or the heating unit 4 is controlled according to the calculated amount of heating to be added to dispense hot water at a predetermined constant temperature. Was.

Next, the conventional example shown in FIG. 1O will be explained.

Heat exchanger 13 and water supply channel 1 that supplies water to the heat exchanger 13
4, a hot water supply path 15 that supplies hot water from the heat exchanger 13 to a predetermined location, a heating unit 16 that heats the heat exchanger 13, a flow rate sensor 17 that detects the flow rate of water flowing through the water supply path 14,
A hot water outlet temperature sensor 18 that detects the temperature of hot water flowing through the hot water supply path 15, a temperature setting unit I9 that adjusts the setting of the hot water outlet temperature,
A power switch 20 that controls power supply, an initial setting temperature storage section 21 that stores a predetermined initial setting temperature, and a desired setting temperature set in the temperature setting section 19 or the initial setting stored in the initial setting temperature storage section 21. It consisted of a control section 22 that controls the heating section 16 based on signals from the flow rate sensor 17 and the hot water temperature sensor 18 so that the temperature is maintained.

The control unit 22 also performs a comparative judgment to compare and determine the desired set temperature input from the temperature setting unit 19 or the initial set temperature stored in the initial set temperature storage unit 21 and the outlet hot water temperature detected by the outlet hot water temperature sensor 18. a calculation unit 24 that calculates the amount of heating based on the signal from the comparison and determination unit 23 and the flow rate from the flow rate sensor 17; and a calculation unit 24 that controls the heating unit 16 so that the amount of heating determined by the calculation unit 24 is achieved. It consisted of a heating control section 25. In addition, 26 is the hot water supply path 15
This is the hot water terminal at the end of the bath.

With this configuration, when the power switch 20 is turned on from an OFF state and the hot water tap terminal 26 is opened, the flow rate sensor 17 detects the flow of water. First, the initial setting temperature stored in the initial setting temperature storage section 21 is displayed on the temperature setting section 19. If the user is not satisfied with this initial set temperature, he or she adjusts the temperature setting section 19 to the desired temperature. The hot water supply path 15 is heated so that the desired set temperature or initial set temperature is reached.
The hot water outlet temperature detected by the hot water outlet temperature sensor 18 and the desired set temperature or the initial set temperature are compared and determined by the comparison determination section 23, and the amount of heating to be added is calculated from the comparison determination result and the flow rate detected by the flow rate sensor 17. 24, and the heating control section 25 or the heating section 16 is controlled according to the determined heating amount to be added, so that the set temperature is reached.

Problem to be Solved by the Invention However, in the conventional configuration described above, the comfortable temperature of the hot water differs depending on the age, health condition, or physiological condition of each person using the hot water. Constant-temperature hot springs always provide hot water at a constant temperature, which can be uncomfortable to use. In addition, in the conventional example shown in FIG. 10, when the power switch 20 is turned off and then used again, the initial setting temperature is set, so the temperature setting in the temperature setting section 19 is very difficult to reach the desired temperature. It is time consuming and
There was a problem that this water heater was extremely dangerous for elderly people and children who did not know how to adjust the water temperature.

The present invention solves the above-mentioned conventional problems, and automatically adjusts the water temperature based on the skin temperature to determine the user's health condition and physiological condition, so that it is always comfortable and suitable for use by elderly people and children. The purpose is to provide a water heater that is safe even when using water heaters.

Means for Solving the Problems In order to solve the above problems, the water heater according to the first aspect of the present invention includes a heat exchanger, a water supply channel that supplies water to the heat exchanger,
A hot water supply path that supplies hot water from a heat exchanger to a predetermined location, a heating unit that heats the heat exchanger, a flow rate sensor that detects the flow rate of water flowing through the water supply path, and a sensor that detects the temperature of the hot water flowing through the hot water supply path. A hot water outlet temperature sensor, a skin temperature detection means for detecting the skin temperature of the user using the hot water, a temperature setting section for determining the hot water outlet temperature based on the user's skin temperature obtained from the skin temperature detection means, and a flow rate. and a control section that controls the heating section to reach the set temperature determined by the temperature setting section based on signals from the sensor and the hot water temperature sensor.

In addition, the water heater described in item 2 includes a heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, and a water supply channel that heats the heat exchanger. A heating section, a flow rate sensor that detects the flow rate of water flowing through the water supply channel, a hot water outlet temperature sensor that detects the temperature of the hot water flowing through the hot water supply channel, and a skin temperature detection means that detects the skin temperature of a user using the hot water. , a temperature setting section that determines the hot water temperature based on the user's skin temperature obtained from the skin temperature detection means; and a temperature setting section that determines the hot water temperature based on the signals from the flow rate sensor and the hot water temperature sensor. a control unit that controls the heating unit so that the skin temperature detects the temperature, a wireless transmission unit that transmits information obtained by the skin temperature detection unit, and a wireless reception unit that receives information transmitted from the wireless transmission unit and sends the information to the temperature setting unit. It is equipped with the following.

Furthermore, the water heater described in item 3 includes a heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, and a water supply channel that heats the heat exchanger. A heating section, a flow rate sensor that detects the flow rate of water flowing through the water supply channel, a hot water temperature sensor that detects the temperature of the hot water flowing through the hot water supply channel, a main temperature setting section that adjusts the temperature of hot water flowing through the hot water supply channel, and a main temperature setting section that adjusts the temperature of hot water. A skin temperature detection means for detecting the user's skin temperature, an initial temperature setting section for determining the hot water temperature based on the user's skin temperature obtained from the skin temperature detection means, and signals from the flow rate sensor and the hot water temperature sensor. and a control section that controls the heating section so that the temperature reaches the set temperature determined by the main temperature setting section or the initial temperature setting section based on the temperature setting section.

Furthermore, the water heater described in item 4 has a water supply channel that supplies water to the heat exchanger and the heat exchange section, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, and a water supply channel that heats the heat exchanger. A heating section, a flow rate sensor that detects the flow rate of water flowing through the water supply channel, a hot water temperature sensor that detects the temperature of the hot water flowing through the hot water supply channel, a main temperature setting section that adjusts the temperature of hot water flowing through the hot water supply channel, and a main temperature setting section that adjusts the temperature of hot water. A skin temperature detection means for detecting the user's skin temperature, a sub-temperature setting section for determining the hot water temperature based on the user's skin temperature obtained from the skin temperature detection means, a main temperature setting section and a sub-temperature setting section. a setting changeover switch that selects each set temperature determined by the setting changeover switch; and a control unit that controls the heating section to reach the set temperature selected by the setting changeover switch based on signals from the flow rate sensor and the hot water temperature sensor. We were able to work together.

Effect With the above configuration, in the water heater described in item 1, the skin temperature of the user is detected by the skin temperature detection means during hot water supply,
The water temperature is automatically determined and dispensed according to the skin temperature.

Furthermore, in the water heater described in item 2, data on the user's skin temperature obtained by the skin temperature detection means is wirelessly transmitted to the wireless reception means by the wireless transmission means.

Furthermore, in the water heater described in item 3, since the initial set temperature is set based on the user's skin temperature obtained by the skin temperature detection means, the initial set temperature is not the same when the hot water is re-discharged after the power is turned off. The temperature corresponds to the user's skin temperature.

Furthermore, in the water heater described in item 4, the temperature determined by the main temperature setting section that can freely adjust the hot water temperature;
The temperature determined by the sub-temperature setting section, which adjusts the water temperature to the user's skin temperature, can be freely selected using the setting changeover switch.

Example Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a water heater showing a first embodiment of the present invention. In the figure, solid arrows indicate signal lines for transmitting control signals, and dashed arrows indicate the direction of flow of hot water.

In FIG. 1, 27 is a heat exchanger, 28 is a heat exchanger 27
29 is a water supply path that supplies hot water from the heat exchanger 27 to a predetermined location, 30 is a heating unit that heats the heat exchanger 27, and 31 is the flow rate (Qw) of water flowing through the water supply path 28.
) is a flow rate sensor that detects

32 is a hot water outlet temperature sensor that detects the actual hot water outlet temperature (Taut) that is the temperature of hot water flowing through the hot water supply path 29; 33 is a skin temperature detection means that detects the user's skin temperature (Th); and 34 is a skin temperature detection means 33. A temperature setting unit 35 determines a set temperature (Two) based on the skin temperature of the user obtained by the user; This is a control unit that controls the heating unit 30 to maintain the temperature.

The control section 35 will be explained in detail. 36 is a skin temperature determination difference (△Th) which is the difference between the user's skin temperature (Th) and the skin temperature reference value (Ths) from the skin temperature reference value output unit 37.
A skin temperature comparison section 38 calculates the virtual hot water temperature difference (△
39 is a set temperature reference value output unit 4
A set temperature calculation unit that adds a virtual hot water temperature difference (△TW) to a predetermined set temperature reference value (Twos) from 0 to determine a set temperature (Two), this skin temperature comparison unit 36, a conversion unit 38, and a set temperature calculation unit. 39 is collectively referred to as a temperature setting section 34.

Further, 41 indicates the set temperature (Two) obtained by the temperature setting unit 34 and the hot water supply path 29 obtained by the hot water outlet temperature sensor 32.
A comparison/judgment unit 42 compares and determines the actual hot water temperature (Tout), which is the temperature of the hot water flowing through the water, and a comparison/judgment unit 42 adds the signal from the comparison/judgment unit 41 and the flow rate (Qw) of water flowing through the water supply channel 28 obtained by the flow rate sensor 31. A calculation unit 43 calculates the amount of heating (Qh) to be added, which is calculated by the calculation unit 42.
) is a heating control unit that controls the heating unit 30 so that 44 is a hot water outlet terminal at the end of the hot water supply path 29.

To explain the operation in the above configuration, when the hot water tap terminal 44 at the end of the hot water supply path 29 is opened, the flow rate sensor 31 detects the flow of water and the flow rate, and operates the heating unit 30 to adjust the hot water temperature. Take control.

Next, as an example of how to control the hot water temperature, see (
1 shows a flowchart consisting of instructions a) to (m). The explanation will be given below in order starting from (a).

(a) The user's skin temperature (Th
). In addition, a predetermined skin temperature reference value (Ths) is read.

(b) In the skin temperature comparison section 36, the skin temperature detection means 33
The skin temperature determination difference (ΔTh) between the user's skin temperature (Th) read by the skin temperature reference value (Ths) and the skin temperature reference value (Ths) is determined.

ΔTh=Th−Th5 (C) In the conversion unit 38, a virtual hot water tap temperature difference (67w) is determined according to the skin temperature determination difference (ΔTh). The conversion of ΔTh to 67w is performed, for example, as shown in the following equation.

△Tw=　Log,　　△Th (d) Read the set temperature reference value (Twos).

(e) The set temperature calculation unit 39 calculates the set temperature reference value (
The set temperature (Two) is determined by adding the virtual hot water temperature difference (67w) to the two (Twos).

Two = Twos + △Tw (f) Actual hot water temperature (Tout
).

(g) In the comparison determination unit 41, the actual hot water temperature difference (△Tw) between the set temperature (Two) and the actual hot water hot water temperature (Tout) is determined.
Find o).

ΔTwo=Two −Taut (h) If the actual hot water outlet temperature difference ΔTwo≠0, the command (i) is entered. Further, if the actual hot water outlet temperature difference ΔTwo = 0, the command (1) is entered.

(i) Read the flow rate (Qw) from the flow rate sensor 31.

(j) In the calculation unit 42, the actual hot water temperature difference (△Two
) and the flow rate (Qw), calculate and find the amount of heating to be added (Qh).

Qh=QwX△Tw.

(k) Heating ji (Qh
), the heating control section 43 controls the heating section 30. After that, the command (1) is entered.

(1) Read the flow rate (Qw) from the flow rate sensor 31.

(m) If flow rate (Qw)≠0, enter command (f).

Flow! If (Qw)=O, the process ends.

Therefore, in this first embodiment, since the hot water temperature is determined according to the user's skin temperature obtained by the skin temperature detection means 33, the hot water temperature is always determined according to the user's health condition and physiological condition. It has the effect of supplying hot water at a comfortable temperature. In addition, since the hot water is controlled to a temperature that corresponds to the skin temperature, it can be easily operated and used even by the elderly and children, and can be used with peace of mind.

Next, a second embodiment shown in FIG. 3 will be described.

In FIG. 3, 45 is a heat exchanger, 46 is a heat exchanger 45
47 is a hot water supply path that supplies hot water from the heat exchanger 45 to a predetermined location, 48 is a heating unit that heats the heat exchanger 45, and 49 is a flow rate (Qw) of water flowing through the water supply channel 46.
), 50 is a hot water outlet temperature sensor that detects the actual hot water temperature (Tout) that is the temperature of hot water flowing through the hot water supply path 47, and 51 is a skin temperature detection means that detects the user's skin temperature (Th). , 52 is a set temperature (Two) based on the user's skin temperature obtained by the skin temperature detection means 51.
The temperature setting unit 53 is a control unit that controls the heating unit 48 to reach the set temperature determined by the temperature setting unit 52 based on signals from the flow rate sensor 49 and the hot water temperature sensor 50. Further, 54 is a wireless transmitting means for wirelessly transmitting the user's skin temperature obtained by the skin temperature detecting means 51, and 55 is a wireless receiving means for receiving information transmitted from the wireless transmitting means 54.

The control section 53 will be explained in detail. 56 is a skin temperature determination difference (△Th) which is the difference between the user's skin temperature (Th) and the skin temperature reference value (Ths) from the skin temperature reference value output unit 57.
The skin temperature comparison section 58 calculates the virtual hot water temperature difference (6
7w) The conversion unit to be determined, 59 is the set temperature reference value output unit 60
A set temperature calculation unit that adds a virtual amount H temperature difference (67w) to a predetermined set temperature reference value (Twos) to determine a set temperature (Two), this skin temperature comparison unit 56, a conversion unit 58.5 a constant temperature calculation unit 59 is collectively referred to as a temperature setting section 52. Furthermore, 61 is the set temperature (Tw) determined by the temperature setting section 52.

A shell comparison determination section 62 compares and determines the actual hot water temperature (Tout) flowing through the hot water supply path 47 which is the Z hot water temperature obtained by the hot water exit temperature sensor 50 and the signal from the comparison determination section 61 and the actual hot water temperature (Tout) obtained by the flow rate sensor 49. A calculation section 63 calculates the amount of heating to be added (Qh) from the flow rate (Qw) of water flowing through the water supply channel 46; 6° is the hot water outlet terminal at the end of the hot water supply path 47.

To explain the operation in the above configuration, when the hot water outlet terminal 64 at the end of the hot water supply path 4' is opened, the flow rate sensor 49 detects the flow of water and the flow rate, and activates the heating unit 48 to raise the temperature of the hot water at the outlet. control.

Next, as an example of how to control the hot water temperature, see (
5 shows a flowchart consisting of instructions a) to (0). The explanation will be given below in order starting from (a).

(a) User's skin temperature 2 while skin temperature detection means 51
(Th) is measured. This measured signal of the user's skin temperature (Th) is transmitted by the wireless transmission means 54)
do.

(b) The wireless receiving means 55 receives the signal transmitted by the wireless transmitting means 54.

(C) Skin temperature from predetermined skin temperature reference value 57 output section)
Read the standard value (Ths).

(d) In the skin temperature comparison section 56, the skin temperature detection means 51
User's skin temperature (Th) and skin 1 read by
The skin temperature determination difference (ΔTh) from the temperature reference value (Ths) is determined.

-ΔTh=Th−Ths (e) The conversion unit 58 calculates a virtual hot water temperature difference (67w) according to the skin temperature determination difference (ΔTh). The conversion of ΔTh to 67w is performed, for example, as shown in the following equation.

△Tw=　Logc　　△Th (f) Read the set temperature reference value (Twos).

(g) The set temperature calculation section 59 calculates the set temperature reference value (
The set temperature (Two) is determined by adding the virtual hot water temperature difference (67w) to the two (Twos).

Two = Twos + △Tw (h) Actual hot water temperature (Tout
).

(i) In the comparison/determination section 61, the actual hot water outlet temperature difference (△
Find Two).

ΔTwo=Too −Taut (j) If the actual hot water outlet temperature difference ΔTwo≠0, the command (k) is entered. Also, the actual hot water temperature difference △Tw.

If =0, the instruction (n) is entered.

(k) Read the flow rate 1k (Qw>) from the flow rate sensor 49.

(1) In the calculation unit 62, the actual hot water temperature difference (△Two
: and the flow 1k (Qw), calculate and find the amount of heating to be added (Qh).

Qh=QwX△Tw.

(m) Based on the heating amount (Qh) determined by the calculation unit 62, the heating control unit 63 controls the heating unit 48. After that, the command (n) is entered.

(n) Read the flow rate (Qw) from the flow rate sensor 49.

(o) If the flow rate (Qw)=≠0, enter the command (h).

Moreover, if the flow rate (Qw)=0, the process ends.

In this second embodiment, the hot water temperature is determined according to the user's skin temperature obtained by the skin temperature detection means 51, so that the temperature is always comfortable depending on the user's health condition and physiological condition. It has the effect of supplying hot water. In addition, since the hot water is controlled to a temperature that corresponds to the skin temperature, even the elderly and children can easily operate it and use it with peace of mind. Because it is separated and independent from the user, it does not interfere with the user's skin temperature)
The skin temperature detection means can be installed at the optimal position to detect the skin temperature, and the installation work can also be simplified.

Furthermore, a third embodiment shown in FIG. 5 will be described. In FIG. 5, 65 is a heat exchanger, and 66 is a heat exchanger 6.
5 is a water supply channel that supplies water, 67 is a hot water supply channel that supplies hot water from the heat exchanger 65 to a predetermined location, 68 is a heating unit that heats the heat exchanger 65, and 69 is a flow rate of water flowing through the water supply channel 66 ( Q
70 is a hot water outlet temperature sensor that detects the actual hot water temperature (Tout) that is the temperature of the hot water flowing through the hot water supply path 67; 71 is a skin temperature detection means that detects the user's skin temperature (Th); , 72 is a main temperature setting section for setting and adjusting the water temperature to the temperature desired by the user, and 73 is an initial temperature setting section for setting the water temperature based on the user's skin temperature obtained by the skin temperature detection means 71. 74 is the main temperature setting section 72
The initial temperature setting unit 73 sets each set temperature (Two
, Two2), the set temperature (Two) in the main temperature setting section 72 is determined preferentially to the set temperature (Two), and the set temperature is determined based on the signals from the flow rate sensor 69 and the hot water temperature sensor 70. A control unit 75 is a power switch mounted on the main temperature setting unit 72 and controls the heating unit 68 so that the heating unit 68 is heated.

The control section 74 will be explained in detail. 76 is a skin temperature determination difference (△Th) which is the difference between the user's skin temperature (Th) and the skin temperature reference value (Ths) from the skin temperature reference value output unit 77.
The skin temperature comparison section 78 calculates the virtual hot water temperature difference (6
7w); 79 is a set temperature reference value output unit 8;
A set temperature calculation unit that adds a virtual hot water temperature difference (67w) to a predetermined set temperature reference value (Twos) from 0 to determine a set temperature (Two2), this skin temperature comparison unit 76, a conversion unit 78,
The set temperature calculation section 79 is collectively referred to as an initial temperature setting section 73.

Here, after outputting and displaying the set temperature (Two2) determined by the initial temperature setting section 73 to the main temperature setting section 72,
If there is no temperature setting from the user, the set temperature (Two2) determined by the initial temperature setting section 73 is set as the set temperature (Two).
shall be.

In addition, if the temperature is changed by the user, the temperature input to the main temperature setting section (Twol) is changed to the set temperature (Tw).
o).

Furthermore, 81 is a set temperature (Two) and a hot water temperature sensor 7.
A comparison/judgment unit 82 compares and determines the actual outlet temperature (Taut), which is the temperature of hot water flowing through the hot water supply path 67 obtained by comparing and determining the temperature of hot water flowing through the hot water supply passage 66 obtained by the signal from the comparison/judgment unit 81 and the flow rate sensor 69. The amount of heating added from the flow rate (Qw) of water (
A calculation unit 83 that calculates the amount of heat (Qh) is a heating control unit that controls the heating unit 68 so that the amount of heating to be added (Qh) determined by the calculation unit 82 is achieved. 84 is a hot water outlet terminal at the end of the hot water supply path 67.

To explain the operation in the above configuration, the power switch 75
When the hot water outlet terminal 84 at the end of the hot water supply path 67 is opened, the flow rate sensor 69 detects the flow of water and the flow rate, and activates the heating unit 68 to start controlling the hot water temperature. The set temperature (TlO2) determined based on the skin temperature detection means 71 in the initial temperature setting section 73 is automatically set as the initial set temperature, and the main temperature setting section 72
will be displayed as input. If the user is not satisfied with the initial set temperature, the main temperature setting section 72 sets the desired set temperature (T
(wol) is done manually.

The set temperature (Two
1) is preferentially adopted as the set temperature (Two2) determined in the initial temperature setting section 73 and is
o) is determined. The controller 74 or the heating unit 68 is controlled based on the signals from the flow rate sensor 69 and the hot water temperature sensor 70 so that the determined set temperature (Two) is achieved.

Next, as an example of how to control the hot water temperature, see (
A flowchart consisting of instructions a) to (0) is shown. The explanation will be given below in order starting from (a).

(a) The user's skin temperature (Th
). In addition, a predetermined skin temperature reference value (Ths) is read.

(b') In the skin temperature comparison section 76, the skin temperature detection means 7
The skin temperature determination difference (ΔTh) between the user's skin temperature (Th) read from step 1 and the skin temperature reference value (Ths) is determined.

ΔTh=Th−Th5 (C) The converter 78 calculates the temporary hot spring temperature difference (67w) according to the skin temperature determination difference (ΔTh). The conversion of Δth to 67w is performed, for example, as shown in the following equation.

△Tw=　Loge　　△Th (d) Read the set temperature reference value (Twos).

(e) The set temperature calculation section 79 calculates the set temperature reference value (
The set temperature (Two2) is determined by adding the virtual hot water temperature difference (67w) to the temperature difference (Twos).

Two2=Twos ten ΔTw (f) The set temperature (Two2) is output to the main temperature setting section 72 and displayed.

(g) Input the set temperature (Twol) from the main temperature setting section 72. If there is no temperature setting (Two) by the user, Two = Two2. Furthermore, if there is a temperature setting (Twol) by the user, Two=Twol.

(h) The actual hot water temperature (Tout) is measured from the hot water temperature sensor 70.
).

(i) In the comparison and determination section 81, the actual hot water outlet temperature difference (△Tw) between the set temperature (Two) and the actual hot water outlet temperature (Tout) is determined.
Find o).

ΔTwo=Two −Taut (j) If the actual hot water outlet temperature difference ΔTwo≠0, the command (k) is entered. Further, if the actual hot water temperature difference ΔTwo = 0, the command (n) is entered.

(k) Read the flow rate (Qw) from the flow rate sensor 69.

(1) In the calculation unit 82, the actual hot water temperature difference (△Two
) and the flow rate (Qw), calculate and find the amount of heating to be added (Qh).

Qh=Q*×△Tw.

(m) Based on the heating amount (Qh) determined by the calculation unit 82, the heating control unit 83 controls the heating unit 68. After that, the command (n) is entered.

(n) Read the flow rate (Qw) from the flow rate sensor 69.

(0) If flow rate (Qw)≠0, the command (g) is entered.

If flow rate (Qw)=O, the process ends.

In this third embodiment, the initial temperature of the hot water outlet is determined according to the user's skin temperature obtained by the skin temperature detection means 71, so that the temperature can be adjusted to suit the health and physiological conditions that vary from person to person. It has the effect of supplying hot water at a certain temperature. In addition, since the initial set temperature is a comfortable temperature, it can be used safely even by the elderly and young children.

Furthermore, even when adjusting the temperature to a desired temperature, the initial set temperature is a comfortable temperature that corresponds to the skin temperature, so the work required to change the temperature other than the use of special hot water can be significantly reduced.

Furthermore, a fourth embodiment shown in FIG. 7 will be described. In FIG. 7, 85 is a heat exchanger, 86 is a water supply channel that supplies water to the heat exchanger 85, 87 is a water supply channel that supplies hot water from the heat exchanger 85 to a predetermined location, and 88 is a water supply channel that supplies water to the heat exchanger 85. A heating unit 89 that heats the water flow rate (
90 is a hot water outlet temperature sensor that detects the actual hot water temperature (Tout') which is the temperature of the hot water flowing through the hot water supply path 87, and 91 is a skin temperature sensor that detects the skin temperature (Th) of the user. 92 is a main temperature setting unit for setting and adjusting the water temperature to a temperature desired by the user; 93 is a sub-temperature setting unit for determining the water temperature based on the user's skin temperature obtained by the skin temperature detection unit 91; Setting section 94 is main temperature setting section 92
and a setting changeover switch 95 which selects each set temperature determined by the sub-temperature setting section 93, and a setting changeover switch 95 which outputs signals from the flow rate sensor 89 and the hot water temperature sensor 90 so that the set temperature (Two) selected by the setting changeover switch 94 is achieved. A control unit 96 that controls the heating unit 88 based on the temperature setting unit 96 is a power switch mounted on the main temperature setting unit 92.

The control section 95 will be explained in detail. 97 is a skin temperature determination difference (△Th) which is the difference between the user's skin temperature (Th) and the skin temperature reference value (Ths) from the skin temperature reference value output section 98
The skin temperature comparison section 99 calculates the virtual hot water temperature difference (△
100 is a set temperature calculation unit that adds the virtual hot water temperature difference (△Tw) to a predetermined set temperature reference value (Twos) from the set temperature reference value output unit 101 to determine the set temperature (Two2). , the skin temperature comparison section 97, the conversion section 99, and the set temperature calculation section 100 are combined into a sub-temperature setting section 93.
It is called.

Here, the temperature (Tw) determined by the main temperature setting section 92.

1) and the temperature determined by the sub-temperature setting section 93 (Two2)
The user decides which one to select as the set temperature (Two) using the setting changeover switch 94.

Furthermore, 102 is a comparison determination unit that compares and determines the set temperature (Two) and the actual hot water temperature (Taut) that is the temperature of hot water flowing through the hot water supply path 87 obtained by the hot water temperature sensor 90;
3 is a calculation unit that calculates the amount of heating (Qh) to be added from the signal from the comparison determination unit 102 and the flow rate (Qw) of water flowing through the water supply channel 86 obtained by the flow rate sensor 89; 104 is a calculation unit 1
This is a heating control unit that controls the heating unit 88 so that the amount of heating (Qh) to be added is obtained in step 03. +05 is a hot water outlet terminal at the end of the hot water supply path 87.

To explain the operation in the above configuration, the power switch 96
By turning on the hot water outlet terminal +05 at the end of the hot water supply path 87, the flow rate sensor 89 detects the flow of water, detects the flow rate, and operates the heating unit 88 to start controlling the hot water temperature. . The set temperature (Two2
) is input and displayed in the main temperature setting section 92, which is automatically set as the initial setting temperature. If the user is not satisfied with the initial temperature setting, press the setting changeover switch 9 located on the main temperature setting section 92.
By switching 4 to the main temperature setting, a desired set temperature (Twol) can be set. With the setting changeover switch 94 set to the main temperature setting, the main temperature setting section 92
The set temperature (Two) determined in is the set temperature (Two). Further, if the setting changeover switch 94 is left in the sub-temperature setting, the temperature (Two2) determined according to the user's skin temperature becomes the set temperature (Two). The control section 95 or the heating section 88 is controlled based on the signals from the flow rate sensor 89 and the hot water temperature sensor 90 so that the determined set temperature (Two) is achieved.

Next, as an example of how to control the hot water temperature, see (
A flowchart consisting of instructions a) to (p) is shown. The explanation will be given below in order starting from (a).

(a) The user's skin temperature (Th
). In addition, a predetermined skin temperature reference value (Ths) is read.

(b) In the skin temperature comparison section 97, the skin temperature detection means 9I
The skin temperature determination difference (ΔTh) between the user's skin temperature (Th) read by the skin temperature reference value (Ths) and the skin temperature reference value (Ths) is determined.

ΔTh=Th−Ths (C) The converter 99 calculates a virtual hot water temperature difference (67w) according to the skin temperature determination difference (ΔTh). △Th 6
The conversion to 7w is performed, for example, as shown in the following equation.

△Tw=　Log,　　△Th (d) Read the set temperature reference value (Twos).

(e) In the set temperature calculation unit 100, the set temperature (Two2) is obtained by adding the virtual hot water outlet temperature difference (67w) to the set temperature reference value (Twos).

TlO2: TWOS+ΔTw (f) The set temperature (Two2) of the sub-temperature setting section 93 is output to the main temperature setting section 92 and displayed.

(g) Input the set temperature (Tool) from the main temperature setting section 92. Temperature setting (Two
If there is no I), Two = Two2. Furthermore, if there is a temperature setting (Twol) as a temperature change by the user, Two=Twool.

(h) The actual hot water temperature (Tout) is measured from the hot water temperature sensor 90.
).

(i) In the comparison and determination section 102, the set temperature (Two)
The actual hot water temperature difference (△T
Find wo).

ΔTwo=Two −Tout ('') If the actual hot water outlet temperature difference ΔTwo≠0, the command (k) is entered. Further, if the actual hot water temperature difference ΔTwo = 0, the command (n) is entered.

(k) Read the flow rate (Qw) from the flow rate sensor 89.

(1) In the calculation unit 103, the actual hot water temperature difference (△Tw
o) and the flow rate (Qw), the amount of heating (Qh) to be added is calculated and determined.

Qh=QwX△Tw.

(m) Amount of heating (Qh) determined by the calculation unit 103
Based on this, the heating control section 104 controls the heating section 88. After that, the command (n) is entered.

(n) Read the flow rate (Qw) from the flow rate sensor 89.

(0) If flow rate (Qw)≠O, enter command (p).

If flow rate (Qw)=0, the process ends.

(p) Check whether the setting changeover switch 94 is the main temperature setting or the sub temperature setting. If the main temperature is set, enter the command (g). Also, if the sub-temperature is set, the command (a) is entered.

In the embodiment shown in FIG. 14, the initial temperature of the hot water outlet is determined according to the user's skin temperature obtained by the skin temperature detection means 91, so that even if the health condition and physiological condition of each individual is different, the initial temperature is always the same. It has the effect of supplying hot water at a comfortable temperature. In addition, since the initial set temperature is a comfortable temperature, it is possible to reduce the work of changing the temperature during use, and since the temperature is set right from the beginning, it is safe for elderly people and children to use it. You can use it with confidence. Further, since a setting changeover switch 94 is provided, it is possible to switch at any time between hot water at a desired temperature and hot water at a degree depending on the temperature, making it easy to use.

Effects of the Invention As is clear from the above explanation, according to the hot water supply virtue of the present invention, the following effects can be obtained.

In the water heater described in paragraph 1, the hot water temperature is determined according to the user's skin abuse as detected by the limb skin temperature detection means, so that the temperature is always comfortable according to the user's health condition and physiological condition. It has the effect of supplying hot water. In addition, since the hot water is controlled to a temperature that corresponds to the skin temperature, it can be easily operated and used even by the elderly and children, and can be used with peace of mind.

In addition, in the water heater described in item 2, the hot water temperature is determined according to the user's skin temperature obtained by the skin temperature detection means, so that the hot water temperature is always comfortable depending on the user's health condition and physiological condition. It has the effect of supplying hot water at a certain temperature. In addition, since the hot water is controlled to a temperature that corresponds to the skin temperature, it can be easily operated and used even by the elderly and children, and can be used with peace of mind. Since it is separate and independent from the main body of the machine, the skin temperature detection means can be installed in the optimal position to detect the user's skin temperature without interfering with the user, and installation is also simple. It can be done.

Furthermore, in the water heater described in item 3, the initial temperature of the hot water 1 is determined according to the skin temperature of the user obtained by the skin temperature detection means, so that the initial temperature of the hot water 1 is determined according to the user's skin temperature obtained by the skin temperature detection means. It has the effect of supplying hot water at a comfortable temperature. In addition, since the initial temperature setting is a comfortable temperature, it can be used safely even by the elderly and young children. Furthermore, even when adjusting the temperature to a desired temperature, the initial set temperature or a comfortable temperature corresponding to the skin temperature can be used, so the work required to change the temperature other than the use of special hot water can be greatly reduced.

Furthermore, in the water heater described in item 4, since the initial temperature of the hot water is determined according to the skin temperature of the user obtained by the skin temperature detection means, the health condition and physiological condition of each individual may vary. It has the effect of always supplying hot water at a comfortable temperature, even when the temperature is low.

In addition, since the initial temperature setting is a comfortable temperature, it is possible to reduce the need to change the temperature during use, and since the temperature is set right from the beginning, there is no danger even when used by the elderly or young children, so you can use it with confidence. I can do it. Furthermore, since it is equipped with a setting switch, you can switch between hot water at the desired temperature and hot water at a temperature appropriate for the temperature at any time, making it more convenient to use.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a water heater according to a first embodiment of the present invention, FIG. 2 is a flowchart of a control sequence for the hot water temperature in the hot water heater of the same water heater, and FIG. A schematic configuration diagram of the water heater, FIG. 6 is a flowchart of the control sequence for the hot water temperature in the same water heater, FIG. 7 is a schematic configuration diagram of the water heater in the fourth embodiment, and FIG. 8 is a diagram showing the hot water temperature in the same water heater. FIG. 9 is a schematic diagram of a water heater in a conventional example, and FIG. 10 is a schematic diagram of a water heater in another conventional example. 27, 45.65.85...heat exchanger, 28.46.
66, 86... Water supply pipe, 29, 47.67, 87...
・Hot water pipe, 30.48.68.88...Heating part, 31
, 49.69.89...Flow rate sensor, 32.50.7
0.90--output dk temperature sensor, 33.51.71.
91...Skin temperature detection means, 34.52...Temperature setting section, 35.53.74.95...i1J control section, 54...
- Wireless transmitting means, 55... Radio receiving means, 72.92.
...Main temperature setting section, 73...Initial temperature setting section, 93.
... Sub-temperature setting section, 94... Setting changeover switch. Agent Yoshihiro Morimoto 2nd figure 3rd figure □ - Kazushin 1st company te S, 277th figure paddy control Ondo name β figure 7th figure

Claims (1)

[Claims] 1. A heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, and a heat exchanger that heats the heat exchanger. a heating section, a flow rate sensor that detects the flow rate of water flowing through the water supply channel, a hot water temperature sensor that detects the temperature of the hot water flowing through the hot water supply channel, and a skin temperature sensor that detects the skin temperature of a user using the hot water. a temperature setting section for determining a hot water outlet temperature based on the user's skin temperature obtained from the skin temperature detecting means; a control section that controls the heating section so that the set temperature is reached. 2. A heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, a heating section that heats the heat exchanger, and the water supply a flow rate sensor that detects the flow rate of water flowing through the hot water supply path; a hot water temperature sensor that detects the temperature of the hot water flowing through the hot water supply path; a skin temperature detection means that detects the skin temperature of a user using the hot water; a temperature setting section that determines the hot water temperature based on the user's skin temperature obtained from the detection means; and a set temperature determined by the temperature setting section based on signals from the flow rate sensor and the hot water temperature sensor. a control section that controls the heating section; a wireless transmission section that transmits information obtained by the skin temperature detection section; and a wireless reception section that receives information transmitted from the wireless transmission section and sends it to the temperature setting section. A water heater with means. 3. a heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, a heating section that heats the heat exchanger, and the water supply A flow rate sensor that detects the flow rate of water flowing through the hot water supply path, a hot water outlet temperature sensor that detects the temperature of the hot water flowing through the hot water supply path, a main temperature setting section that adjusts the setting of the hot water temperature, and the skin of the user who uses the hot water. a skin temperature detection means for detecting temperature; an initial temperature setting section for determining a hot water outlet temperature based on the user's skin temperature obtained from the skin temperature detection means; and a signal from the flow rate sensor and the hot water outlet temperature sensor. and a control unit that controls the heating unit to reach the set temperature determined by the main temperature setting unit or the initial temperature setting unit. 4. a heat exchanger, a water supply channel that supplies water to the heat exchanger, a hot water supply channel that supplies hot water from the heat exchanger to a predetermined location, a heating section that heats the heat exchanger, and the water supply A flow rate sensor that detects the flow rate of water flowing through the hot water supply path, a hot water outlet temperature sensor that detects the temperature of the hot water flowing through the hot water supply path, a main temperature setting section that adjusts the setting of the hot water temperature, and the skin of the user who uses the hot water. A skin temperature detection means for detecting temperature, a sub-temperature setting section for determining a hot water temperature based on the user's skin temperature obtained from the skin temperature detection means, and determined by the main temperature setting section and the sub-temperature setting section. a control unit that controls the heating section to reach the set temperature selected by the setting switch based on signals from the flow rate sensor and the hot water temperature sensor; Water heater with.