JPH11173634A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform economical comfortable heating operation without overheating when an air conditioner to heat the interior of a room and a floor heater are operated in combination. SOLUTION: An air conditioner is provided with a radiation sensor 9 which detects the surface temperature of the floor, and a room temperature sensor 10 which detects the room temperature, and in case that the room temperature is in the range of 20-23 deg.C when the floor temperature set temperature of the floor heater 5 reaches the floor surface temperature, the contents of a room temperature control means predetermined for single operation of the air conditioner are switched to perform ventilating operation. Hereby, economical and comfortable, in the relation between the room temperature and floor surface temperature, indoor heating can be materialized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises an air conditioner for heating a room and a floor heater for heating a room. When the air conditioner and the floor heater are used in combination, the air conditioner takes into consideration the floor temperature. The present invention relates to an air conditioner that controls the operation of a machine.

[0002] In the case of heating only by an air conditioner, warm air gathers near the ceiling and the room temperature rises excessively when trying to warm the feet. Therefore, when a floor heater such as a hot carpet is used together, the air in the entire room and the feet warm together, so that more comfortable heating can be realized than when using an air conditioner or a floor heater alone. Can be. However, when an air conditioner and a floor heater are used in combination, there is a problem that both electric charges are required and it is not economical. Further, since the control is performed separately, there is a tendency that the system is overheated when used in combination with a floor heater. Therefore, there is an air conditioner and a floor heater that are economically and comfortably operated even when operated in combination.

[0003] This is as described in JP-A-6-66429.

In this publication, as shown in FIG. 4, a radiation sensor 9 is provided in an air conditioner, and a floor surface temperature of the floor heater 5 (hereinafter, referred to as a floor temperature) is provided by the sensor. Measure. The determination is made based on whether the measured value is higher than a predetermined temperature. If it is determined to be high, it is determined that floor heating is being performed. In this case, the combined operation is performed by lowering the set temperature of the air conditioner by, for example, 3 ° C. from the set temperature in the case of the single operation of the air conditioner.

[0005]

However, in this method, depending on the method of selecting the predetermined temperature value, even if the floor is not sufficiently heated, it is determined that the floor is being heated, or the floor is sufficiently heated. Even in such a case, there is a disadvantage that it is determined that the floor heating is not performed.

Accordingly, an object of the present invention is to provide an air conditioner which improves such a situation and performs economical and comfortable heating when an air conditioner and a floor heater are used together. It is in.

[0007]

Means for Solving the Problems To achieve the above object, an air conditioner having an air conditioner for heating a room and a floor heater is provided. Control means for controlling the operation of the air conditioner so as to be the room temperature set temperature, and control means for controlling the operation of the floor heater so that the floor temperature becomes the set temperature of the floor temperature, the control means comprising: In the case where the harmony device and the floor heater are operated in combination, the control content is switched to lower the set temperature when the floor temperature reaches the floor temperature set temperature.

According to a second aspect of the present invention, there is provided an air conditioner including an air conditioner for heating a room and a floor heater.
Room temperature detection means, floor temperature detection means, and while controlling the operation of the air conditioner so that the room temperature is the room temperature set temperature,
Control means for controlling the operation of the floor heater so that the floor temperature becomes the floor temperature set temperature, the control means, when operating the air conditioner and the floor heater together, the floor temperature is the When the set temperature of the bed temperature is reached, the control content is switched to perform the blowing operation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS When an air conditioner and a floor heater are used together, the room temperature control for the combined operation is switched to the room temperature control for the combined operation of the air conditioner. In order to switch to the room temperature control, it is determined whether or not the floor temperature of the floor heater has reached the set floor temperature. After the floor temperature reaches the set floor temperature, the control of the room temperature of the air conditioner is switched, and the blowing operation is performed. As a result, an operation that enters a comfortable temperature range is realized from the relationship between the room temperature and the floor temperature.

An embodiment according to the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, an indoor unit 1 of an air conditioner for heating by flowing hot water according to the present invention is mounted on a wall surface of a (harmonic) room. A remote controller 3 for controlling the machine is attached. A warm water mat (floor heater) 5 is laid on the floor of the room.

The hot water mat 5 is heated by flowing hot water and is controlled by a signal from the remote controller 3.

The indoor unit 1 of the air conditioner includes a receiver 7 for receiving a signal from the remote controller 3 and a hot water mat 5.
A radiation sensor (floor temperature detecting means) 9 for detecting the surface temperature of the vehicle, and a room temperature sensor 10 for detecting the indoor temperature.

The remote controller 3 has an operation switch 13 for turning on / off the air conditioner, an operation switching button 15 for switching to various modes, a room temperature setting button 21 for setting the room temperature, and measuring the room temperature. It has a room temperature sensor (room temperature detecting means) 19 and a floor temperature setting button 23 for setting the floor temperature of the floor heater. The operation switching button 15 automatically determines heating, cooling, and dehumidification according to the room temperature at the start of operation when the air conditioner is used alone,
And automatic operation mode to determine the set temperature, heating, cooling, dehumidification when using the air conditioner alone, manual operation mode to set the set temperature manually, and when starting operation when using floor heating alone Performs an automatic operation mode in which the set temperature is automatically determined according to the room temperature, a manual operation mode in which the set temperature is manually set when solely using the floor heating, and a combined operation of the air conditioner and the floor heater. There are modes for and. A signal indicating the operation of the switch button of the remote controller 3 or a signal indicating the detected room temperature is transmitted to the indoor unit 1 as needed.

FIG. 2 shows a schematic configuration of the air conditioner.

In FIG. 1, reference numeral 1 denotes an indoor unit, and 51 denotes an outdoor unit for cooling, which are connected by a refrigerant pipe 63. The indoor heat exchanger 25 is housed in the indoor unit 1. The indoor heat exchanger 25 has a refrigerant pipe 63 through which the refrigerant flows.
(Hereinafter simply referred to as heat exchanger 2)
5b) and a hot water indoor heat exchanger (hereinafter simply referred to as a heat exchanger 25a) incorporating a hot water pipe 43 through which the hot water flows. The heat exchanger 25b is located on the windward side of the heat exchanger 25a. Are located.

The outdoor unit 51 contains a compressor 59, an outdoor heat exchanger 55, an accumulator 61, and the like.
These are connected by a refrigerant pipe to the heat exchanger 25b of the indoor unit 1,
A refrigeration cycle (refrigerant circulates in the direction of the solid arrow) is formed by being connected to the electric expansion valve 53 and the like. An outside air temperature sensor 65 is attached to the outdoor heat exchanger 55.

The cooling capacity of the indoor heat exchanger 25 depends on the compressor 5
9 by changing the number of revolutions. Compressor 5
9 uses an induction motor as the drive source,
By changing the frequency of the AC power supplied to the inverter using the inverter device 57, the rotation speed can be changed.

The motor-operated expansion valve 53 can be throttled using a step motor or the like to change the throttle amount of the refrigerant.

The heat source unit 31 contains a heater 39 (for example, a burner), a hot water heat exchanger 37, a pump 35, and a thermal valve 33. The pump 35, the hot water heat exchanger 37, and the heater 39, together with the indoor heat exchanger 25a and the variable flow rate valve 29, are annularly connected by a hot water pipe 43.

The variable flow rate valve 29 is capable of changing the flow rate of hot water by restricting the valve using a step motor or the like.

The heat-operated on-off valve 33, the pump 35 and the hot water heat exchanger 37 of the heat source unit 31 are connected to the floor heater 5 and the hot water pipe 41 in a ring shape.

The thermal opening / closing valve 33 controls the opening / closing time of the valve so as to extend the time during which hot water flows through the thermal opening / closing valve,
The floor temperature of the floor heater is adjusted by shortening it.

In the above configuration, the refrigerant is supplied to the refrigerant pipe 63.
When the air is circulating in the room, the pressure is reduced by the electric expansion valve 53, and the refrigerant evaporates in the heat exchanger 25b to cool the air, so that the room is cooled. In addition, hot water is supplied through hot water piping 43.
When the air is circulating inside, the air is heated by the heat exchanger 25a, so that the room is heated.

When the refrigerant and the hot water are simultaneously circulated through the indoor heat exchanger 25, the air once cooled by the heat exchanger 25b located on the windward side is heated again by the heat exchanger 25a located on the leeward side. You. By adjusting the cooling capacity and the heating capacity, the temperature of the air can be controlled.

Reference numeral 77 denotes a microcomputer control device (control means) for controlling the rotation speed of the compressor and the variable flow rate valve to control the room temperature. In addition, the control unit controls the thermal operation on-off valve 33 to control the floor temperature.

The microcomputer control device 77 in the indoor unit 1 includes a room temperature sensors 10 and 19, a reception unit 7, a radiation sensor 9, an outside air temperature sensor 65, and a drive motor control circuit for the indoor blower 27 (hereinafter referred to as a motor control circuit). 79
It is connected to the. Room temperature sensors 10, 19, receiving unit 7,
The microcomputer control device 77 controls the motor control circuit 79, the heater 39, the variable flow valve 29, the thermal valve 33, and the inverter device 57 based on the input signals of the radiation sensor 9 and the outside air temperature sensor 65, and is most comfortable. Control to achieve economical heating.

FIG. 3 shows the relationship between the room temperature and the floor temperature in the case where the air conditioner and the floor heater are used together, based on the result of finding a comfortable temperature range. The vertical axis is room temperature,
The horizontal axis is the floor temperature, and the squares inside are the recommended temperature range. Symbol A is a line at a floor surface temperature of 25 ° C. If the temperature is higher than the floor surface temperature, the skin temperature does not decrease even if the floor heater is kept in contact with the floor heater, and the temperature is not low even when sitting on a chair. Symbol B is a line at a floor surface temperature of 31 ° C. If the temperature is lower than the floor surface temperature, it is safe for burns, and it is not hot even when sitting on the floor. Symbol C is a line at room temperature 23 ° C. If it is lower than this room temperature, it is not too hot to sit on the floor. Symbol D is a line at room temperature of 20 ° C. Above this room temperature, it is not too cold to sit in a chair.

Here, an operation mode of the operation switching button 15 necessary for explaining the present invention will be described. First, in the automatic operation mode when the air conditioner is operated independently, only the air conditioner is operated, and the floor heating is not operated. In this mode, the room temperature at the start of operation of the air conditioner is detected, and cooling, heating, dehumidification, and a set temperature are determined based on the room temperature at that time, and the air conditioner is operated so as to reach the set temperature. When the heating operation is set, a stop state or a blowing operation is performed when the room temperature is equal to or higher than the set temperature, and the heating operation is performed when the room temperature is lower than the set temperature. In the single floor heating operation mode, only the floor heating is operated, and the air conditioner is not operated. The bed temperature setting temperature is set to any of 27, 28, and 29 ° C. according to the room temperature at the start of operation in the automatic setting, and is set to 1 ° C. in the range of 25 to 31 ° C. in the manual setting. . In the mode for performing the combined operation of the air conditioner and the floor heater, the heating operation of the air conditioner and the floor heater are simultaneously operated, and the following operation is performed.

First, the radiation sensor 9 detects the floor temperature and sends the detected temperature to the microcomputer controller 77.
The microcomputer controller 77 compares the set floor temperature with the set floor temperature and checks whether the set floor temperature has reached the set floor temperature. If it has, the room temperature is checked next to see if the room temperature is between 20 ° C and 23 ° C. That is, it is checked whether or not the room temperature and the floor temperature are within the range indicated by the square in FIG. □ If it is within the range, switch the set temperature for independent automatic operation of the air conditioner to a low temperature that always makes the air blow operation, and perform the control as the air blow operation, or regardless of the set temperature. Make sure that the air blow operation is performed. This achieves heating that is within the recommended range of comfortable temperatures. □ If it is outside the range, perform air conditioning operation at the set temperature for independent automatic operation of the air conditioner.

While the embodiment of the present invention has been described above, for example, in the above-described embodiment, the microcomputer controller 77 as the control means compares the set floor temperature with the set floor temperature, and determines the set floor temperature. After reaching the temperature, if the room temperature is in the range of 20 ° C. or more and less than 23 ° C., the control contents are switched to perform the blowing operation. However, after the floor temperature reaches the floor set temperature, the room temperature becomes 20 ° C. When the temperature is not less than 23 ° C. or more, the set temperature for independent automatic operation of the air conditioner is switched,
The heating operation may be performed at the lowered set temperature. In this case, when the room temperature is equal to or higher than the set temperature, the air conditioner is in a stopped state or in a blowing operation.

The present invention is not limited to the embodiments, and various modifications can be made without departing from the gist of the present invention. For example, although the description has been made with the use of hot water as an air conditioner, the present invention may be applied to other heating devices such as an air conditioner of a heat pump and a fan heater.

[0033]

As described above, according to the present invention,
When an air conditioner and a floor heater are used together, the set temperature of the air conditioner is set within a comfortable range in relation to the room temperature and the floor temperature, thereby realizing economical and comfortable heating. Is done.

[Brief description of the drawings]

FIG. 1 is a perspective view of a room showing an installation state when an air conditioner according to an embodiment of the present invention is used together with a floor heater.

FIG. 2 is a block diagram showing a schematic structure inside the air conditioner of FIG. 1;

[Fig. 3] When the air conditioner and the floor heater are operated in combination, the area within squares is the recommended range of the comfortable temperature.

FIG. 4 is a perspective view of a room showing an installation state when a conventional air conditioner is used together with a floor heater.

[Explanation of symbols]

 Reference Signs List 1 indoor unit 5 hot water mat (floor heater) 9 radiation sensor (floor temperature detecting means) 10, 19 room temperature sensor (room temperature detecting means) 12 operation unit 13 operation switch 15 operation switching button 21 room temperature setting button 23 floor temperature setting button 25 Indoor heat exchanger 31 Heat source unit 77 Microcomputer control unit (control means)

Claims (2)

[Claims] 1. An air conditioner comprising an air conditioner for heating a room and a floor heater, a room temperature detecting means, a floor temperature detecting means, and an operation of the air conditioner so that the room temperature becomes a set room temperature. Control means for controlling the operation of the floor heater so that the floor temperature becomes the set temperature of the floor temperature, wherein the control means operates the air conditioner and the floor heater together. An air conditioner characterized in that when the floor temperature reaches the set floor temperature, the control content is switched to lower the set temperature. 2. An air conditioner comprising an air conditioner for heating a room and a floor heater, a room temperature detecting means, a floor temperature detecting means, and an operation of the air conditioner so that the room temperature becomes a set room temperature. Control means for controlling the operation of the floor heater so that the floor temperature becomes the set temperature of the floor temperature, wherein the control means operates the air conditioner and the floor heater together. When the floor temperature has reached the set floor temperature, the air conditioner is configured to switch the contents of control to perform a blowing operation.