JP2012065845A - Heating controller for sauna bath - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating controller which relates to an electric sauna bath using an electric heating means (heater) as a heat source and specifically is suitable for use in the electric sauna bath.SOLUTION: The heating controller for a sauna bath exerts a significant energy saving effect by securing time when the electric heater (heater) 90 stays turned off by reducing energy consumption of the electric heater (heater) 90 until the resistive element of a temperature sensor 60 is warmed up to a set temperature and maintaining the temperature of the interior of the sauna bath at the set temperature by continuously outputting heat by the electric heater (heater) 90 after the resistive element of the temperature sensor 60 is warmed up to the set temperature in heating the interior of the sauna bath at the beginning of an operation by the electric heater (heater) 90.

Description

  The present invention relates to an electric sauna bath using an electric heating means (heater) as a heat source, and specifically to a heating control device suitable for use in an electric sauna bath.

  As a heating means for a sauna bath, for example, as seen in Patent Documents 1 and 2, conventionally, by using an electric heating means (heater) and a temperature sensor, the electric heating means has a high temperature based on the detection output of the temperature sensor. To increase the temperature of the air in the sauna room to a set temperature (for example, max 100 ° C.).

JP 2007-209438 A Utility Model Registration No. 3125195

  Regarding the above temperature sensor, for example, as a technical standard of a resistance temperature detector (temperature sensor) such as Pt100Ω, a resistance element and a nominal error are determined by IEC or JIS, but temporal sensitivity is particularly important. Basically, the error is the standard.

  Furthermore, since the environmental conditions of the temperature sensor vary depending on the application to be used, the element portion insulation method is devised for each application. Also, the shape of the sheath tube is different, and the insulator that protects the element portion and the structure of the sheath tube influence the “sensitivity (heat conduction)”.

  FIG. 3 is a cross-sectional view showing an example of the temperature sensor 60 that is generally used at present, partially broken away, in which 60A is a stainless steel sheath tube, and 60C is inside the sheath tube 60A. 60B is a resistive element embedded in the insulator 60C, 60X is a lead wire, and the temperature sensor 60 having the same configuration is used in the present invention. The

  According to the temperature sensor 60 configured as described above, if the heat energy output from an electric heater as an electric heating means described later is transferred to the air, and the warmed air temperature is the primary side, the internal resistance of the temperature sensor 60 The temperature captured by the element 60B is the secondary temperature, and the thermal conductivity of the sheath tube 60A and the insulator 60C is involved until the temperature reaches the resistance element 60B inside the sensor. Here, the difference in heat transfer time is referred to as “sensitivity”.

  In particular, the heat transfer time has a feature that becomes large when starting up (starting up) the operation of the sauna. In the experiment, when the sauna room has an air temperature of 24 ° C. and the surface temperature of the sheath tube 60A of the temperature sensor 60 is also set to 24 ° C., and the operation is started at a set temperature of 70 ° C., heat is exchanged from the electric heating means (heater). As shown in the graph of FIG. 4, there is a difference in temperature especially during startup between the high temperature primary air temperature output in this way and the secondary side where the heat transfer time of the passive temperature sensor 60 is involved. Was about 14.5 ° C., and there was a problem that the excess (difference) in energy increased. The time difference was about 5 minutes. Note that FIG. 4 described above explains the difference between the air temperature and the sensing information (display) by the temperature sensor 60.

  Up to this point, the heat transfer time and temperature difference of the temperature sensor 60 have been described. Actually, when bathing in a sauna, if the interior material of the sauna room is not warmed, the radiation effect from the flat surface cannot be obtained, and comfortable bathing I can't.

  FIG. 5 is a graph showing the time required for the interior material to warm up and the bathing environment to be prepared. Therefore, until the interior material in the sauna room exerts an appropriate radiation effect, there is a certain amount of time here. is necessary.

  From the above, in the case of a sauna room having a general structure, it is considered that the star-up time required until the sauna environment is completed is approximately 40 minutes or more. Even if the heat output is increased and the time is shortened by 40 minutes, when the set temperature is reached, the integrated power amount does not change, so energy is not saved. In addition, the temperature around the heater becomes high, which may cause a safety problem. Conversely, even if the output is small, the integrated power amount does not change when the set temperature is reached. Therefore, even if the output on the electric heating means side is changed, there is a problem that does not lead to energy saving.

  FIG. 8 is a graph showing detection information of the temperature sensor 60 during normal operation (ON / OFF control) of the above-described conventional sauna bath heating device. From the above, the conventional heating device is The extra energy (difference) at the start-up was very large, which proved very uneconomical.

  Therefore, the technical problem of the present invention is that the selection balance of the heater as the electric heating means and the elapsed time in which the interior material exhibits the radiation effect is considered to be about 40 minutes after the sauna environment is set, and bathing is performed after this 40 minutes. The object is to provide a sauna bath heating control device devised so that a significant energy saving effect can be exhibited without changing the heat insulation efficiency of the sauna room and the heat efficiency of the sauna room by constructing the control system as possible.

(1) In order to solve the above technical problem, a heating control device for a sauna bath according to claim 1 of the present invention includes a temperature sensor that detects an air temperature in the sauna bath, and a detection output by the temperature sensor. And a heating control device for a sauna bath that generates a high temperature on the basis of the electric heating means for raising the air in the sauna room to a set temperature. Until the resistance element of the sensor warms and reaches a set temperature, the energy consumption of the electric heating means is saved, the time for which the electric heating means is off is secured, and the resistance element of the temperature sensor is warmed to After reaching the set temperature, heat is continuously output from the electric heating means, and the temperature in the sauna bath is maintained at the set temperature.

(2) In the sauna bath heating control device according to claim 2 of the present invention, the operating time zone from the start of operation until the resistance element of the temperature sensor warms up to the set temperature is referred to as a conditioned operating time zone. And, after the habituation operation time period, the OFF point of the electric heating means is switched to control lower than the set temperature.

  According to the means according to claims 1 and 2 described in the above (1) and (2), the energy on the primary side is saved until the temperature sensor is warmed, and the time for which the heater is OFF (off) is ensured. In addition, when about 35 minutes before about 40 minutes before the environment of the sauna bath is completed, heat is continuously output toward the set temperature. This is set to 35 minutes in consideration of the time and temperature rising gradient, and is set to reach the set temperature just after 40 minutes.

  Furthermore, according to the means according to 2 above, for example, as an energy saving measure after the lapse of 35 minutes, the control is switched to the control in which the OFF point of the electric heating means is lower by, for example, 5 ° C. than the set temperature. This is in consideration of overshoot caused by residual heat, and the actual air temperature takes into account the balance so as to exceed the set temperature.

  Supplementally, in the case of an animal marathon, the animal having a fast foot is the “rabbit”, that is, the heated air temperature on the primary side, and the animal having a slow foot is the “turtle”, that is, the heat transfer time of the temperature sensor section. “Rabbit” can rest (OFF) until it reaches a point where “Kame” is located.

  As described above, according to the heating control device for a sauna bath according to the present invention, the resistance element of the temperature sensor warms up to the set temperature until the reference time (for example, 40 minutes) in which bathing is possible. As described above, a temperature difference is unavoidable at start-up, but in the present invention, the difference (output energy of the electric heating means) is devised so as not to be excessive, so the structure of the sauna bath must be changed. However, by incorporating control settings that take into account the sensitivity of the temperature sensor into the control unit, a significant energy saving effect can be achieved.

The perspective view explaining the example of the structure of the sauna bath with which the heating control apparatus which concerns on this invention was implemented, and its electrical wiring. The block diagram explaining an example of the electrical constitution of the heating control apparatus used by this invention. Sectional drawing which abbreviate | omitted and showed an example of the temperature sensor used by this invention. The graph which showed the difference of the air temperature in the sauna bath detected by this invention, and temperature sensor sensing. A graph showing the time when the sauna bath interior material is warmed and the bathing environment is prepared. The graph explaining the state of the temperature change at the time of the normal driving | operation of this invention. The figure which compared the energy saving effect of this invention and the conventional apparatus, and made it a table | surface. The graph explaining the state of the temperature change at the time of normal operation of the conventional apparatus.

  Hereinafter, an embodiment of a heating control device for a sauna bath according to the present invention will be described with reference to the drawings. FIG. 1 illustrates an appearance of a sauna bath 1 in which the present invention is implemented and a configuration example of its electrical wiring. A perspective view and FIG. 2 are block diagrams illustrating the electrical configuration thereof. In these drawings, a reference numeral 10 generally indicates a control unit (power supply for controlling the entire system of the sauna bath 1). ), 20 is a power supply unit, 30 is an operation unit (controller), 40 is an alarm unit, 50 is a clock unit that counts time, 90 is an electric heater (heater) that is a heat source of the sauna bath 1, and 70 Is a temperature fuse, 80 is a lighting fixture, and 60 is a temperature sensor.

  Furthermore, in the figure, 21, 22, 31, 41, 51, 61, 71, 81, 91 are connection lines (wirings) that electrically connect the respective members 20 to 90 and the control unit 10 described above. These members 20 to 90 are controlled and operated in accordance with a program stored in a memory (not shown) of the board provided in the control unit 10 so that the sauna bath 1 can be bathed in the sauna at a predetermined temperature. It is structured to be able to adjust to.

  In the drawing, a free standing type sauna room is described as the sauna bath 1, but this is an example, and for example, a built-in type sauna room may of course be used, and the selection thereof is arbitrary. . Further, the wiring shown in FIG. 1 is an example of implementation, and the form and configuration of the wiring are arbitrary.

  The control configuration of the present invention will be described in more detail according to the description of FIG. 6 until the resistance element 60B of the temperature sensor 60 is warmed up to reach the set time from the start of operation until the reference time for bathing (for example, 40 minutes). In this case, a temperature difference will occur at startup. However, in the present invention, since this difference is not excessive, the energy saving effect can be exhibited without changing the structure of the sauna bath 1.

  That is, the energy loss on the primary side (sauna room side) shown in FIG. 3 is saved until the temperature sensor 60 is heated to a predetermined temperature, and the electric heater (heater) 90 is turned on as shown in FIG. When the time of OFF is secured and about 35 minutes (35 minutes) have passed, about 40 minutes before the environment in the sauna bath 1 is ready from the start, the electric heater (heater) 90 is activated and set. Since heat is continuously output to the sauna bath 1 toward the temperature, it becomes possible to heat the air temperature in the sauna bath 1 to a set temperature (for example, 100 ° C.) after about 40 minutes from the start. Allows a comfortable sauna bath.

  FIG. 7 is a table showing data when the energy saving effect when the sauna bath heating control device according to the present invention is used is compared with the energy saving effect of a heating control device (normal control) that is generally used conventionally. This indicates that the control of the present invention is excellent in all of the ON time, OFF time, integrated electric energy, and effect.

  That is, for the purpose of demonstrating the energy saving effect of the present invention, the introduction of the system of the present invention into the electric heater (heater) 90 and the sauna bath 1 (sauna room) having the same wall structure of the sauna room and the like. What was not prepared was compared and the state of normal operation was compared. As a result, in the system according to the present invention that was introduced, it was possible to realize a reduction of the integrated power amount of 11%.

  The heating control device for a sauna bath according to the present invention can be used not only for a general household sauna bath but also for a large and large business sauna bath. It can be used for a sauna bath and can demonstrate excellent economic efficiency.

DESCRIPTION OF SYMBOLS 1 Sauna bath 10 Control part 20 Power supply part 30 Operation part 40 Alarm part 50 Clock part 60 Temperature sensor 70 Thermal fuse 80 Lighting fixture 90 Electric heater (heater)

Claims (2)

Heating for a sauna bath provided with a temperature sensor for detecting the air temperature in the sauna bath and an electric heating means for generating a high temperature based on a detection output from the temperature sensor and raising the temperature of the air in the sauna room to a set temperature. A control device,
During the initial heating operation by the electric heating means, the energy consumption of the electric heating means is saved and the time that the electric heating means is off until the resistance element of the temperature sensor warms and reaches a set temperature. While ensuring
After the resistance element of the temperature sensor has warmed and reached the set temperature, heat is continuously output from the electric heating means, and the temperature in the sauna bath is maintained at the set temperature. Heating control device for sauna bath.   An operation time zone from the start of operation until the resistance element of the temperature sensor warms up to the set temperature is a habituation operation time zone, and after the habituation operation time zone, the OFF point of the electric heating means is 2. The sauna bath heating control device according to claim 1, wherein the control is switched to a control lower than a set temperature.