JP2589066B2 - Sauna bath equipment - Google Patents

Description

The present invention relates to a sauna bath apparatus in which the temperature of a sauna room can be adjusted by a heat source.

(B) Conventional technology In this type of conventional sauna bath device, a heating source is controlled by a temperature detector as disclosed in Japanese Utility Model Publication No. 52-44213. In order to set the temperature, there are a method of turning the knob and a method of pressing and closing the switch for setting the arbitrary output, but the latter method is based on the ease of operation, accuracy, etc. recently. Is becoming more common. However, if the switch is touched when the power is turned on or the like, the set temperature may change without the user's knowledge.

Japanese Patent Application Laid-Open No. 57-194112 discloses that a temperature setting mode is selected by a mode selection switch, a lamp indicating the mode state flashes, and a set switch is operated in that state to display a temperature on a temperature display section (ie, Preset temperature)
There is disclosed an operating device of an air conditioner for a vehicle, in which the air conditioner changes.

(C) Problems to be Solved by the Invention According to the sauna bath apparatus disclosed in the former publication, the temperature in the sauna room may be adjusted to a temperature different from the temperature desired by the user, and the user may feel uncomfortable. Was given.
Further, according to the operating device of the latter publication, the display state of the display panel can be changed depending on the selection of the mode selection switch, but the detected temperature cannot be displayed on the display panel. Cannot be switched and displayed.

Therefore, in the present invention, the temperature of the variable switch can be set only when the temperature setting switch is operated (that is, in the temperature setting mode state), and the display temperature on the display unit can be switched from the detected temperature to the set temperature. It is intended to provide a sauna bath device.

(D) Means for Solving the Problems According to the present invention, in the sauna bath apparatus for adjusting the temperature in the sauna room by the heat source 13, the temperature setting switch 32 for instructing the temperature setting mode and the temperature setting mode are instructed. Variable switches 34, 35 for increasing or decreasing the set temperature between the upper limit and the lower limit, and the heat source based on the output corresponding to the difference between the set temperature set by the variable switches 34, 35 and the detected temperature in the sauna room. Control means for controlling the temperature, a display section 92 for displaying the temperature, and switching means 33, 33A for switching the display temperature of the display section to either the detected temperature in the sauna room or the set temperature based on the operation of the temperature setting switch 32. The present invention provides a sauna bath apparatus provided with:

(E) Function When the temperature setting switch 32 is closed, the switch is closed by the switching means, the operation by the variable switches 34 and 35 becomes effective, and the temperature can be set. Since the temperature is automatically switched to the set temperature, it becomes clear to the surroundings that the temperature setting mode is set, and the heat source is controlled by the control means based on the output corresponding to the difference between the set temperature and the detected temperature in the sauna room. The set temperature can be changed only when the temperature setting switch 32 is closed, thereby improving safety.

(F) Example One example of the present invention will be described below in detail with reference to the drawings. FIG. 2 is an external perspective view of a hexahedron-shaped rectangular parallelepiped sauna bath apparatus (1). A sauna room (9) is formed by a front panel (8) provided with a door (7) for the vehicle. The front panel (8) is provided with an operation section (10) for operating when turning on the power and bathing, and the door (7) has a handle (11) for opening and closing and a sauna room (9).
A window (12) through which the user can see through is provided.

And raising the temperature in the sauna room (9),
Each panel (2) as a heat source for lowering
(3) A heater (13) is embedded in (4) and (6).

Next, referring to FIG. 1, (14) is an AC power supply,
(15) is a power switch that closes when the power-on button (18) of the operation unit (10) is pressed, (16) is a transformer, (17)
Is a rectifier circuit. When the power switch (15) is closed, the voltage is stepped down by the transformer (16) and the rectifier circuit (17) generates a DC power supply (V _DD ). (19) is a thermistor having a negative characteristic for detecting the temperature in the sauna room (9), which is connected to a power supply (V _DD ) via a resistor (20). (24) is the amplifier (22) through the resistor (21)
And (23) and the difference between the divided potential of the resistor (20) and the divided potential of the thermistor (19). The amplified detected temperature output is input to the negative terminal of the comparator (26) via the resistor (25) and to the A / D converter (27) via the c contact of a switch (33A) described later. Is also input and output to the temperature display section (29) provided in the operation section (10) via the display drive circuit (28) after A / D conversion.
The display section (29) displays the indoor detected temperature.
The display unit (29) is not limited to the operation unit (10), and may be provided on the inner wall surface forming the sauna room (9). When the switch (33A) is at the b contact, the set temperature output is displayed.

The comparator (26) is provided with a set temperature output circuit (3
In this configuration, the output of 6) is input to its positive terminal via a ladder resistor group (37). The detected temperature output and the set temperature output are compared by the comparator (26), and the transistor (30) and the control relay (31) are controlled to open and close the switch (31A). To control the temperature of the sauna room (9),
The comparator 26, the transistor 30, the control relay 31, and a switch 31A thereof constitute control means for controlling the heat source 13 based on an output corresponding to a deviation between the set temperature and the detected temperature in the sauna room.

(32) is a temperature setting switch that closes when the setting button (32A) on the operation unit (10) is pressed, and a control relay (3
3) Grounded via. The control relay (3
When 3) is excited, the switch (33A) is turned to the contact b and the switch 33B is closed. Where control relay 33, switch 3
Switching means for switching the display temperature of the display unit 29 to either the detected temperature in the sauna room or the set temperature by 3A and 33B is configured. (34) and (35) are variable up switches and variable down switches, which can increase or decrease the set temperature output in the temperature setting mode state by closing the switch (33B). These switches (34) (35)
Is a step-by-step output of the set temperature in steps of the pressing variable button (34A) and the variable down button (35A) of the operating section (10), and in steps of every certain time in proportion to the pressing time. Increase or decrease.

(36) is a set temperature output circuit. The terminal and the up variable switch (34) and the down variable switch (35) are respectively connected to the terminals, and both switches (34) and (35) are grounded, and the terminal is a capacitor ( 37) Power via (V _DD )
, And grounded via a resistor (38), and the terminal is connected to a power supply (V _DD ) via a resistor (39) and grounded via a capacitor (40). Since the set temperature output circuit (36) of this embodiment is composed of an integrated circuit with a built-in 5-bit binary counter, its output is divided into 32, and the upper limit is 32 steps and the lower limit is 1 step. Therefore, when the memory reaches a certain value (the upper limit 32nd step, the lower limit 1st step), the setting signal does not change even if the count pulse is further generated.

The output circuit (36) can operate when a low level is input to its preset terminal and a high level is input when the charge of the capacitor (40) exceeds the threshold level.

The setting outputs divided into 32 as described above are expressed by a combination of a high level and a low level at the terminals 〜, and the output of each terminal 〜 can be expressed as a binary output corresponding to the input signal.

(37) is a ladder resistor group that generates an output that changes stepwise in accordance with the output of the set temperature output circuit (36). The output is input to the comparator (26), and the switch (33A) When it is at the contact b, it is also output to the display unit (29) via the A / D converter (27) and the display drive circuit (28).

The operation of the above configuration will be described below.
First, when the power-on button (18) of the operation unit (10) is pressed, the power switch (15) is closed, a DC power (V _DD ) is generated by the transformer (16) and the rectifier circuit (17), and the set temperature output is output. Applied to the circuit (36). As a result, the preset terminal keeps the low level input for a certain period after the power is applied and then becomes the high level input due to the relationship between the time constant determined by the resistor (39) and the capacitor (40). Becomes

The detected temperature output in the sauna room (9) by the thermistor (19) is input to the negative terminal of the comparator (26) via the amplifier (24) and the resistor (25), and the set temperature output circuit (36) The set temperature output via the ladder resistor group (37) is input to the positive terminal of the comparator (26). For this reason, the comparator (26) compares both inputs, and based on the comparison result, each panel (2) (3) forming the sauna room (9)
(4) The heater (13) embedded in (6) is controlled. That is, if the detected temperature is lower than the set temperature, the output of the comparator (26) is at low level and the transistor (30)
The switch (31A) is closed, the heater (13) is energized, and the temperature in the sauna room (9) rises because the control relay (31) is de-energized. If the detected temperature exceeds the set temperature, the heater (13) is de-energized, and the heater (13) is controlled in this way.

On the other hand, since the temperature setting switch (32) is not closed, the switch (33A) is at the c-contact and the detected temperature output is A / D converted by the A / D converter (27), and the display drive circuit (28) , The detected temperature is displayed on the display unit (29). Therefore, the user may take a bath while watching the detected temperature of the display section (29).

Next, an operation for changing the set temperature when the set temperature is too high or too low will be described. First, in this case, the setting button (32
When A) is pressed, the temperature setting switch (32) is closed and the temperature is set to the temperature setting mode, the control relay (33) is excited, the switch (33A) is switched to the contact b, and the switch (3
3B) closes. Since the switch (33A) is changed to the contact b, the display of the detected temperature is stopped and the display of the set temperature is performed.

Here, an operation based on the closing of the up-variable switch (34) and the down-variable switch (35) to change the set temperature will be described. First, consider the case where the up variable button (34A) is pressed. When the variable up switch (34) is closed, a pulse is sent as an addition signal for counting one pulse regardless of the pressing time, and the pressing time is detected, and the pressing time is set to a certain time (for example, 0.6 seconds). If it exceeds, one pulse is sent out after a lapse of a predetermined time, and a pulse is generated every time a predetermined time (for example, 0.2 seconds) elapses, counted and stored. That is, for example, if the pressing time is 2 seconds, one pulse is generated at the moment of pressing and one pulse is generated after 0.6 seconds, and then seven pulses are generated every 0.2 seconds, that is, a total of nine pulses are generated. become. Then, by sending a signal for setting the output corresponding to the count, the set temperature output circuit (3
A series of operations of 6) is completed. Here, if the initial state is set to “medium” and the 15th step is taken, if the count value exceeds “17”, the variable up switch (3
4) Pressing does not change the output.

Next, a case where the down variable switch (35) is pressed will be considered. When the variable down switch (35) is pressed, substantially the same operation as when the variable up switch (34) is pressed is performed. The only difference is that a pulse is generated as a subtraction signal.

In this manner, the output from each terminal of the set temperature output circuit (36) is output to the display section (29) through the ladder resistor group (37) as described above, and is output to the display section (29). The set temperature can be set while looking at the displayed set temperature.

When the setting operation is completed, the setting button (32A)
To open the temperature setting switch (32), demagnetize the control relay (33), open the switch (33B) and replace the switch (33A) with the c-contact to display the detected temperature again. Is what you do. Of course, at this time, even if the up variable switch (34) and the down variable switch (35) are closed, the set temperature operation is invalid because the switch (33B) is open.

(G) Effects of the Invention According to the present invention, when the temperature setting switch is closed, the setting operation by the variable switch is enabled by the switching means, and the temperature can be set, while the display temperature of the display unit is set from the detected temperature. Since the temperature is automatically switched, the surroundings (particularly the user) can be clearly indicated by the display on the display unit that the mode is the temperature setting mode, and the control means responds to the deviation between the set temperature and the detected temperature in the sauna room. Since the heat source control based on the output is performed, the set temperature can be made variable only when the temperature setting switch is closed, and the safety and operability as a sauna bath apparatus can be improved.

[Brief description of the drawings]

FIG. 1 is an electric circuit diagram showing one embodiment of the present invention, and FIG. 2 is an external perspective view of a sauna bath apparatus of the present invention. (1) ... sauna bath equipment, (9) ... sauna room, (1
3) Heater, (26) Comparator, (31) Control relay, (32) Temperature setting switch, (33) Control relay, (34) Variable up switch, ( 35) ……
Variable down switch, (36) …… Set temperature output circuit,
(37) ... Ladder resistance group.

Claims (1)

(57) [Claims] In a sauna bath apparatus for controlling the temperature in a sauna room by a heat source, a temperature setting switch for instructing a temperature setting mode, and increasing a set temperature between an upper limit and a lower limit when the temperature setting mode is instructed. Alternatively, a variable switch that decreases, a control unit that controls the heat source based on an output corresponding to a deviation between the set temperature set by the variable switch and the detected temperature in the sauna room, a display unit that displays the temperature, and this display unit Switching means for switching the displayed temperature of the detected temperature to either the detected temperature in the sauna room or the set temperature based on the operation of the temperature setting switch.