JPS58164959A - Temperature controller for heat pump type floor heating apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat pump type floor heating device that performs heating using a radiator installed on the floor surface, etc., and one of the objects of the present invention is to provide comfortable heating. It is.

Conventionally, temperature control in this type of heat pump floor heating system has been carried out simply by detecting the room temperature and operating or stopping the compressor. However, with this control, it was difficult to properly detect the room temperature.In other words, because this heat pump type floor heating system uses natural convection, the room is almost in a windless state, which is said to be a comfortable heating state with a cold head and warm feet. If you want to keep the room temperature at about 18°C and the floor temperature at about 30°C, the thermistor itself must have a very small heat capacity and be sensitive to small temperature changes. Then, the compressor is operated at a temperature of 0.5°C or less during this room temperature change.
If it is not stopped, the temperature of the floor will drop to 22 to 23 degrees Celsius in an instant, making it impossible to achieve a heating condition that will keep your head cold and your feet warm. However, during this temperature change of 0.5° C. or less, it is technically very difficult and expensive.

In addition, in order to solve the above-mentioned problems, in a control system that detects and detects the temperature of a radiator installed on the floor, that is, the floor temperature, and stops the operation of the compressor, the fourth As shown in the figure, the compressor ON-switching effect can be obtained, but there are problems in actual use when a cushion is placed on top of the thermistor (not shown) that detects the floor surface temperature on page 3, or when a person When you sit down, the area around the thermistor is kept warm, and as shown in Figure 5, the time it is stopped increases, and until now the room temperature has been around 18 degrees Celsius, and the floor temperature has been around 30 degrees Celsius.
The room temperature, which had been stable at around 28℃, quickly dropped to about 1.
7℃, and the temperature of the floor surface that is not blocked by cushions etc. is about 30℃ to 22℃, which has the disadvantage of not being able to provide a comfortable heating effect for people with cold heads and warm feet. Ta.

The present invention eliminates the drawbacks found in the conventional heat pump type floor heating devices.

Hereinafter, Figures 1 to 3 of the accompanying drawings showing one embodiment of the present invention will be described.
Please refer to Figure 3 for explanation.

・1 First, I will explain the outline of the ton air circulation diagram with reference to Figure 1. In the figure, 1 is the operation switch, 2 is the thermostat, and the ON point side of this thermostat 2 is the compressor motor. 3. A fan motor 4 is connected, and a timer 6 is connected to the OFF point side.

The contact point 6 of the timer 6 is connected to the compressor motor 3.
Each of the fan motors 4 is connected to the fan motor 4 to control energization of the power source 7.

Next, the refrigeration cycle will be explained with reference to FIG.

In the figure, 8 is a compressor, and a radiator 9, a capillary tube 1o, and an outdoor heat exchanger 11 are connected between the discharge side and the suction side, which are provided in a meandering manner over the entire floor surface. 12
is a cooling fan.

In the above configuration, the operation switch 1 is closed to perform floor heating operation. And if the floor temperature is low, thermostat 2
is on the ON point side, voltage is applied to the compressor motor 3 and the fan motor 4, and the compressor 8 is operated. The discharged high-temperature, high-pressure refrigerant is radiated into the chamber by the radiator 9, reduced in pressure by the capillary tube 10, and then transferred to the outdoor heat exchanger 11.
7.1 A series of refrigerant circuits that absorb heat and return to the compressor 8 are formed.

Then, when the floor surface temperature reaches about 30'C and the room temperature reaches about 16 to 17 degrees Celsius, the thermostat 6 page throat 2 switches to the OFF point side, and the voltage is applied to the compressor motor 3 and fan motor 4. is no longer applied, and the compressor 8. The fan 12 stops, and the amount of heat radiated from the radiator 9 decreases.

At the same time, timer 6 operates, and the timer operation time T
If the thermostat 2 returns in a time T1 shorter than 2 (for example, about 10 minutes), the compressor 8. The fan 12 is operated again to perform floor heating, creating a comfortable condition with a cold head and warm feet.

FIG. 4 shows how the temperature of the floor changes due to this control.

Here, the amount of temperature change between the ON point and OFF point of the thermostat 2 at this time is preferably about 1.5 degrees.

The above is temperature control during normal use.

However, if a cushion is placed above the detection part of the thermostat 2 that detects the temperature of the floor surface, or if a person sleeps and the heat dissipation of the detection part is obstructed, the detected temperature will not drop.
Thermostat 2 did not return within the operating time T2 of timer 5, and timer 5 reached 6.

After the operating time T2, the timer contact 6 is forcibly closed and the compressor motor 3. The fan motor 4 is energized and the compressor 8 and fan 12 are operated to perform floor heating.

According to such control, the thermostat characteristics as shown in Fig. 3 will be obtained, with the room temperature being approximately 17 to 18 degrees Celsius, and the floor surface temperature being approximately 30 degrees Celsius to approximately 30 degrees Celsius.
Maintaining the temperature at 31.5°C, you can achieve the ideal floor heating effect that keeps your head cool and your feet warm.

Although a mechanical thermostat 2 is used in this embodiment, an electronic thermostand may be used that uses a thermistor element as a temperature detection section.

As is clear from the above embodiments, the temperature control device for the heat pump floor heating system of the present invention includes a thermostat that detects the temperature of a radiator provided on the floor or the temperature of the floor to control the operation of the compressor; Each compressor is equipped with a timer that operates after the compressor has stopped operating, and the compressor is restarted either by the return operation of the thermostat or by the set time of the timer. Even if the detection is blocked, the timer will forcibly restart the compressor after a certain period of time (page 7), allowing ideal floor heating to keep your head cold and your feet warm, and the temperature distribution between the floor side and the room temperature will not deteriorate. It has various advantages such as.

[Brief explanation of drawings]

Fig. 1 is a schematic electrical circuit diagram of a heat pump type floor heating system according to an embodiment of the present invention, Fig. 2 is a refrigeration cycle diagram of the same heat pump type floor heating system, and Fig. 3 is a temperature diagram due to timer operation in the same floor heating system. Figure 4 is a temperature change characteristic diagram due to thermostat operation in the same floor heating system, and Figure 5 is a temperature change characteristic diagram due to a conventional temperature control device. ... Compressor motor, 5 ...--timer, 6 ... timer contact, 8 ... compressor, 9 ... heat radiator. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure No. 21!1 Rehearsal-3■

Claims (1)

[Claims] A thermostat that detects the temperature of a radiator installed on the floor or the temperature of the floor surface to control the operation of the compressor, and a timer that operates after the compressor stops operating are provided, respectively, and the return operation of the thermostat or the timer is controlled. A temperature control device for a heat pump floor heating system that restarts the compressor by detecting a set time.