JPH11173635A - Heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform warm-up heating efficiently without feeling shortage of heating. SOLUTION: When the heating operation is started together with a floor heating mat, with a hot water air conditioner in automatic operation mode, indoor temperature is gauged, and the indoor temperature and the set temperature are compared with each other, and when the indoor temperature is lower than the set temperature, it is checked which of the preset temperature ranges the indoor temperature is in. Here, when the indoor temperature is close to the set temperature or higher than the temperature T3 , normal control is performed, and when the indoor temperature is not less than the temperature T2 , the set temperature of a floor heating mat is raised by compensation temperature t1 (steps 300-310, 320, and 322). On the contrary, when the indoor temperature is lower than the temperature T2 , it is corrected (+t2 or +t3 ) so that the set temperature of the floor heating mat may go higher, and also the hot water air conditioner is set to hot dash (steps 312-318) by which it becomes high heating capacity over usual control range.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating system for heating a room with an air conditioner and a floor heating device.

[0002]

2. Description of the Related Art An air conditioner for indoor air conditioning includes:
In addition to a general air conditioner (air conditioner) that performs a cooling and heating operation by a refrigeration cycle using a refrigerant, there is a hot water air conditioner that performs a cooling operation by a refrigeration cycle and performs a heating operation by using hot water (hereinafter referred to as “hot water”). "Air conditioner").

In a hot water air conditioner, during a heating operation, water is heated by a heat source unit (heat source unit) provided outside to generate hot water, and this hot water is exchanged with a hot water heat exchanger provided in an indoor unit. By circulating, the air blown into the room from the indoor unit is heated and heated.

There are floor heating devices such as an electric floor heating carpet and a floor heating mat for heating by supplying hot water into a hot water tube laid on the floor in the room. Today, air conditioners are widely used, and air conditioners and floor heating devices are often used together.

Some floor heaters using hot water use hot water generated by a heat source unit of a hot water air conditioner. That is, a heating system using hot water includes a combination of a hot water air conditioner and a floor heating mat. In such a heating system, the room can be simultaneously heated by the warm air blown from the floor surface and the indoor unit.

[0006]

However, when indoor heating is started using an air conditioner or a floor heating device, the change in the indoor heating state changes according to the heating environment such as the indoor temperature and the outside air temperature. . In an air conditioner, air conditioning is performed by controlling the heating capacity in accordance with the indoor temperature, but in a floor heating device, heating is performed at a substantially constant heating capacity, such as a heating capacity in accordance with a set temperature or a preset heating capacity. It is supposed to do. For this reason, depending on the environmental temperature such as the indoor temperature of the room where the heating is performed, the outside air temperature, etc., the user may feel that the heating is insufficient or may feel discomfort due to the temperature difference between the floor surface and the room temperature.

[0007] The present invention has been made in view of the above-mentioned facts, and at the start of heating, the room is efficiently heated to the set temperature, and the temperature difference between the floor surface and the room temperature causes discomfort. The purpose of the present invention is to propose a heating system for preventing the occurrence of the heat.

[0008]

The invention according to claim 1 is
An air conditioner that heats the room to a set temperature by blowing air controlled by a heat exchanger provided in the indoor unit from the indoor unit, and a floor heating unit laid on the floor of the room. A floor heating device that heats from a surface, a temperature detection unit that detects a floor surface temperature or a floor surface temperature heated by the air conditioner and the floor heating device and a temperature at a predetermined height from the floor surface as an indoor temperature, Control means for controlling the heating capacity of the floor heating device or the floor heating device and the air conditioner based on the room temperature detected by the temperature detection means at the start of the heating operation by the air conditioner,
It is characterized by including.

According to the present invention, control means for controlling at least the heating capacity of the floor heating device based on the room temperature is provided. This control means controls at least the heating capacity of the floor heating device based on the room temperature during startup heating until the room temperature reaches the set temperature when the room is heated by the air conditioner and the floor heating device.

For example, when the room temperature is lower than a set temperature or a predetermined temperature, control is exercised to increase the heating capacity. Thereby, even when the room temperature is low, the heating and the heating can be performed such that the room temperature reaches the set temperature in a short time.

The invention according to claim 2 is characterized in that the temperature detecting means sets an average value including the floor surface temperature and the wall surface temperature at the predetermined height as the room temperature.

According to the present invention, the indoor temperature uses the temperature of the indoor wall surface and the temperature of the floor surface heated by the floor heating device.

The indoor walls and floors are affected by the temperature of the outside air. Further, when the outside air temperature is low, the heating load is large, so that the heating capacity needs to be increased. For this reason,
By controlling the heating capacity using the temperature of the indoor wall surface and floor surface, it is possible to perform startup heating with an appropriate heating capacity according to the heating load.

The invention according to claim 3 is characterized in that the control means controls the heating capacity of the floor heating device stepwise in accordance with the floor surface temperature detected by the temperature detecting means.

The invention according to a fourth aspect is characterized in that the control of the heating capacity of the floor heating device by the control means corrects a set temperature of the floor heating device, and the floor heating device is controlled based on the corrected set temperature. The heating operation of the device is performed.

According to the present invention, when performing start-up heating, the heating capacity of the floor heating device is controlled stepwise according to changes in the room temperature. At this time, when the floor heating device performs heating with the heating capacity according to the set temperature, the set temperature is changed stepwise according to the room temperature.

When the temperature difference between the set temperature and the room temperature is large, the heating capacity of the floor heating device can be further increased by increasing the set temperature. Further, in the air conditioner, the heating capacity is controlled based on the set temperature and the room temperature. Therefore, if the temperature difference between the set temperature and the room temperature is large, the heating capacity is also increased. Therefore, even when the outside air temperature is low, not only the room temperature at a predetermined height from the floor but also the temperature near the floor can be brought close to the set temperature in a short time.

Further, as the indoor temperature approaches the set temperature, the heating capacity of the floor heating device as well as the air conditioner is reduced, so that the indoor temperature gradually approaches the set temperature, and the indoor temperature greatly exceeds the set temperature. It does not cause discomfort such as a feeling that heating is too effective.

According to a fifth aspect of the present invention, the control means includes:
When the room temperature detected by the temperature detecting means is less than a predetermined value, the air conditioner is controlled to perform the heating operation with the maximum capacity exceeding the heating capacity set in the normal operation. .

According to the present invention, when the room temperature is lower than the predetermined temperature, the air conditioner is controlled so as to operate with a heating capacity exceeding the normal control range.

In general, an air conditioner performs an air-conditioning operation with a predetermined range of capacity. However, in practice, there is a margin in the operation capacity, and operation with a larger heating capacity is possible. Normally, the heater is not operated with the heating capacity exceeding this capacity range, but by performing the heating with the heating capacity exceeding the normal capacity range, the room temperature is low and the temperature difference between the room temperature and the set temperature is obtained. Is large, the room temperature can be brought close to the set temperature in a short time.

According to the present invention, when the heating capacity of the floor heating device is increased, the air conditioner is operated with a heating capacity exceeding the normal capacity range. Thereby, it is possible to heat the area near the floor surface and the area away from the floor surface in a well-balanced manner.

[0023]

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

FIG. 1 shows a schematic configuration of an air conditioning system 11 applied to the present embodiment. In the air conditioning system 11, a hot water air conditioner (hereinafter, referred to as a "hot water air conditioner 10") that performs heating using hot water is used as an air conditioner. The hot water air conditioner 10 includes an indoor unit 12 installed in a room to be air-conditioned and an outdoor unit 14 installed outdoors. In the vicinity of the indoor unit 12,
Relay unit 20 connected to indoor unit 12 and outdoor unit 14
Is provided.

The outdoor unit 14 of the hot water air conditioner 10 is laid on the floor of the room to be air-conditioned by the indoor unit 12 to heat the room from the floor.
Are connected to form the floor heating device 140.
That is, the air conditioning system 11 is formed by the hot water air conditioner 10, the floor heating device 140, and the relay unit 20.

The indoor unit 12 of the hot water air conditioner 10 has an indoor unit comprising an evaporator 16 which is a heat exchanger for a refrigerant circulated by a refrigeration cycle and a radiator 18 which is a heat exchanger for hot water in which hot water is circulated. 22 are formed.
In addition, the evaporator 16 and the radiator 18 provided in the indoor unit 12 may be integrally connected.
They may be provided separately.

The outdoor unit 14 includes a refrigerant unit 24 that forms a refrigeration cycle for circulating a refrigerant with the evaporator 16 of the indoor unit 22, and generates hot water and transmits the generated hot water to the radiator 18 of the indoor unit 22. The heat source unit 26 circulates between the heat source units. In addition, the outdoor unit 14 may be an integral type in which the refrigerant unit 24 and the heat source unit 26 are integrally accommodated in the same casing, or are separate types in which each is accommodated in a separate casing. Is also good. Further, the heat source unit 26 may use hot water for hot water supply for heating.

As shown in FIGS. 1 and 3, the evaporator 16 of the indoor unit 22 is connected to the refrigerant unit 24 via refrigerant pipes 28A and 28B. As shown in FIG. 3, in the refrigerant unit 24, the refrigerant pipes 28A,
One of the refrigerant pipes 8B (refrigerant pipe 28A) is connected to a valve 32. The valve 32 is connected to a compressor 40 via a muffler 34A and an accumulator 38. The compressor 40 is connected to a heat exchanger (condenser) 42 via a muffler 34B. The heat exchanger 42 is connected to a valve 48 via a capillary tube 44 and a strainer 46, and the other refrigerant pipe 28B is connected to the valve 48. Thereby, in the hot water air conditioner 10, a refrigeration cycle is formed between the indoor unit 22 and the refrigerant unit 24.

In the hot water air conditioner 10, when the operation mode is selected to be the cooling mode or the dehumidification mode (dry mode), the compressor 40 is operated to circulate the refrigerant. The refrigerant unit 24 is provided with a cooling fan 53 for cooling the heat exchanger 42 near the heat exchanger 42, and operates the cooling fan 53 as necessary to cool the heat exchanger 42. This prevents the condensation efficiency of the refrigerant from being reduced. In FIG. 3, the flow of the refrigerant is indicated by arrows.

The evaporator 16 of the indoor unit 22 is provided with a heat exchanger temperature sensor (not shown). In the hot water air conditioner 10, the temperature of the evaporator 16 is equal to or lower than a predetermined temperature during cooling operation (for example, 6.4). (C or less) so as to perform the cooling operation while controlling the capacity of the compressor 40.

The radiator 18 of the indoor unit 22 is connected to the heat source unit 26 of the outdoor unit 14 via, for example, flexible hot water pipes (hereinafter, referred to as "hot water tubes") 30A and 30B. One hot water tube 30A is
The hot water inlet nipple 56A of the heat source unit 26 is connected to the hot water inlet nipple 56A, and the other hot water tube 30B is connected to the hot water outlet nipple 56B of the heat source unit 26.

The hot water tube 30B is connected to the indoor unit 22.
Is connected to the hot water inlet nipple 66A of the
Is connected to the radiator 18 via the The hot water tube 30A is connected to the hot water outlet nipple 6 of the indoor unit 22.
6B is connected to the radiator 18.

In the heat source unit 26, a hot water outlet nipple 56B is connected to the hot water inlet nipple 56A via the hot water heat exchanger 64, the pump 62 and the pressure tank 60, whereby the indoor unit 22 and the hot water unit 26 are connected. A closed circulation path of hot water is formed between them.

The hot water unit 26 is provided with a gas burner 70 for generating hot water. The gas burner 70 is provided with a gas burner 70 from outside the machine via gas solenoid valves 180A and 180B and a gas proportional valve 182. Gas is supplied. The gas burner 70 heats the water in the hot water heat exchanger 64 by burning this gas to generate hot water for heating. The pressure tank 60 is connected to a drain tank 72 via a pressure cap 58, and discharges water (for example, tap water) circulating in the hot water circulation path via the drain tank 72.

In the heat source unit 26, when the water temperature (the temperature of the hot water) rises and the internal pressure exceeds a predetermined value (for example, 0.9 kg / cmU), the pressure valve of the pressure cap 58 operates, and The hot water is discharged from the pressure relief port provided to the drain tank 72 to prevent the pressure in the pipe from rising, and when the temperature of the hot water drops and the internal pressure becomes lower than a predetermined value, the negative pressure valve is activated to operate the drain tank 72. To collect water from The water overflowing from the drain tank 72 is discharged from a drain pipe connection port.

When operating in the cooling mode or the dry mode, the hot water air conditioner 10
(Operation of hot water) is stopped, and the variable flow valve 68 is closed (operation step 0). On the other hand, during the heating operation (heating mode), the heat source unit 26
The gas burner 70 is ignited and the pump 62 is operated, and the variable flow valve 68 of the indoor unit 22 is opened. Thereby, the hot water is generated in the heat exchanger 64, and the generated hot water is circulated between the heat exchanger 64 and the radiator 18 of the indoor unit 22. The heat source unit 26 is provided with a high-temperature thermistor (not shown) between the hot-water heat exchanger 64 and the hot-water outlet nipple 56B, and a temperature detected by the high-temperature thermistor is about 80 ° C. (for example, about 80 ° C.). 82
° C) while circulating while controlling the temperature of the hot water. The opening degree of the variable flow valve 68 (operation step)
Is set according to the room temperature and the set temperature.

The indoor unit 22 is provided with a cross flow fan 90 for blowing air. Also, as shown in FIG. 2, the indoor unit 1 in which the indoor unit 22 is housed.
2 has a suction port 50 and an outlet 5
2 are provided. In the indoor unit 22, by operating the cross flow fan 90, the suction port 50
The air in the room is sucked in from the outlet 52 and is blown out from the outlet 52.
At this time, the temperature of the air sucked from the suction port 50 is controlled by passing through the evaporator 16 to the radiator 18 of the indoor unit 22, and the temperature-controlled air is blown out from the blowout port 52, so that the indoor air is blown out. Is air-conditioned. The outlet 52 is provided with upper and lower flaps 54 and left and right flaps (not shown), and the direction of temperature-controlled air blown from the outlet 52 is changed by the upper and lower flaps 54 and the left and right flaps.

As shown in FIG. 4, the indoor unit 22
Includes a microcomputer (hereinafter "microcomputer 100").
) Is provided. The control board 102 includes a power supply board 10
4. A power relay 110, a temperature fuse 112, a variable flow valve 6 together with a display board 106 and a switch board 108.
8. Fan motor 1 for driving cross flow fan 90
14. Louver motor 11 for controlling upper and lower flaps 54
6 are connected.

In the indoor unit 22, when AC power for operation is supplied to the power supply board 104, this AC power is converted into predetermined power by the power supply board 104 and supplied to the control board 102. The AC power supplied to the indoor unit 22 is supplied from the terminal plate 132 to the heat source unit 26 of the outdoor unit 14, and is supplied from the terminal plate 132 to the refrigerant unit 24 of the outdoor unit 14 via the power relay 110. You. That is, the operating water is always supplied to the hot water unit 26 similarly to the indoor unit 22, and the refrigerant unit 24
The operation is performed by the electric power supplied by turning on the power relay 110 according to the signal from the signal 02.

The control board 102 includes a heat exchange temperature sensor 118 for detecting the temperature of the evaporator 16, a humidity sensor 120 for detecting the indoor humidity, a hot water heat exchanger sensor 122 for detecting the temperature of the radiator 18, Gas shortage sensor 12
4 etc. are connected.

As shown in FIG. 4, the display substrate 106 is provided with display LEDs 128 and the like. As shown in FIG. 2, the display unit 82 is provided on the casing 36 of the indoor unit 12, and the display LED 1 on the display board 106 is provided.
28 and the like are arranged on the display unit 82 (not shown in FIG. 2). Thereby, the display LED 12 of the display unit 82
The operating state of the hot water air conditioner 10 (operating / stopping, operating mode, etc.) can be determined based on the lighting state of 8.

As shown in FIG. 4, a communication I / F board 134 is connected to the control board 102 of the indoor unit 22. To the communication I / F board 134, a control board (not shown) provided in the refrigerant unit 24 and a relay unit 20 described later are connected. The microcomputer 100 of the indoor unit 22 uses the communication I
The air-conditioning operation is performed based on the operation signal input from the relay unit 20 via the / F board 134 and the room temperature.
The microcomputer 100 controls the operation of the refrigerant unit 24 according to the air-conditioning operation by performing serial communication with the refrigerant unit 24 via the communication I / F board 134.

In the hot-water air conditioner 10, operating conditions such as an operation mode and a set temperature are set, and when an air-conditioning operation is instructed, the room temperature is set within a predetermined range of cooling or heating capacity based on the set temperature and the room temperature. Air-conditioning operation is performed so that the temperature becomes the set temperature. For example, when the heating operation is performed in the automatic operation mode, the heating capacity, the amount of blown air, the wind direction, and the like are controlled while predicting the change in the room temperature by fuzzy calculation.

[0044] Thus, as shown in FIG. 7, the room temperature T _R is gradually approach the set temperature T _s, the room temperature T _R is the set temperature T predetermined temperature with respect to _S t ₀ (e.g. 0. (5 ° C.) to maintain the indoor air-conditioning state. At this time, the indoor temperature T
_The heating capacity is controlled so that _R does not exceed a predetermined temperature (for example, 1 ° C.) from the set temperature T _S.

The control of the air-conditioning capacity of the indoor unit 22, the configuration of the refrigerant unit 24, and the control of the refrigerant unit 24 by serial communication can be performed by a conventionally known configuration and method, and a detailed description is omitted in the present embodiment. I do. In the hot water air conditioner 10, the indoor temperature is controlled by the relay unit 2.
0, but the indoor unit 22
A temperature sensor for detecting the indoor temperature may be provided in the inside.

As shown in FIG. 5, the heat source unit 26
Has a control board 1 equipped with a microcomputer (not shown).
74 are provided. In the control board 174,
Power transformer 176, hot water circulation pump (pump motor) 62, igniter 17 for igniting gas burner 70
8, gas solenoid valves 180A and 180B for supplying combustion gas to the gas burner 70, a gas proportional valve 182, a fan motor 184 for air supply, and the like are connected. The control board 174 is connected to the terminal plate 132 of the indoor unit 22. The supplied electric power is transformed by the power transformer 176 to obtain electric power for driving the pump 62 and the like.

A high temperature thermistor 186 for measuring the temperature of the hot water sent from the hot water heat exchanger 64, an outside air temperature sensor 188 for detecting the outside air temperature, a rotation detector 190 for the fan motor 184, and the like are connected to the control board 174. The control board 174 generates hot water of a predetermined temperature while monitoring the operation state of each device in the heat source unit 26 by using these sensors.

A temperature fuse 192, a high limit switch 194, and the like are connected to the control board 174, and a setting switch 200, a pump test terminal 196, and an operation monitoring terminal 198 for externally displaying an operation state and the like. A combustion lamp 202 that lights up when the gas burner 70 is ignited, a failure display LED 204 that displays an error code when a failure occurs, a maintenance switch 206, a secondary pressure adjustment volume 208, and the like are provided.

On the other hand, as shown in FIGS. 1 and 3, a floor heating mat 142 is connected to the heat source unit 26. The heat source unit 26 of the hot water air conditioner 10
Alternatively, a hot water pipe may be provided as a floor heating unit in a floor plate in a room or below the floor plate.

As shown in FIG. 3, the heat source unit 26
Has a hot water inlet nipple 56A and a hot water outlet nipple 56A.
B, a hot water inlet nipple 80A and a hot water outlet nipple 80B are provided side by side. A floor heating mat 142 is connected between the hot water inlet nipple 80A and the hot water outlet nipple 80B.

In the floor heating mat 142, for example, a warm water tube 146 is tightly woven in a mat 144 laid on the floor in a room. As shown in FIG. 3, in the floor heating mat 142, one end of the hot water tube 146 is connected to the hot water inlet nipple 84A, and the hot water tube 86A is connected to the hot water outlet nipple 80B of the heat source unit 26 via the thermal valve 76. The other end of the hot water tube 146 is connected to the heat source unit 26 by connecting the hot water tube 86B connected to the hot water outlet nipple 84B to the hot water inlet nipple 80A of the heat source unit 26. As a result, when the pump 62 operates, hot water is circulated through the floor heating mat 142 in accordance with the opening and closing of the thermal valve 76, and the mat 144 is heated by the hot water.

As shown in FIG. 5, this thermal valve 76
Is connected to a control board 174 of the heat source unit 26, and the opening and closing of the board are controlled by the control board 174.

In the heat source unit 26, the floor heating mat 14
When the start of floor heating by the instruction 2 is instructed, the thermal valve 76 is opened and closed at regular time intervals to circulate hot water into the hot water tube 146 of the floor heating mat 142. Thereby, the mat 144 of the floor heating mat 142 is gradually heated. That is, the heat source unit 26 circulates hot water of a constant temperature to the floor heating mat 142 by controlling on / off of the heat operated valve 76 at a duty ratio corresponding to a preset set temperature.
That is, the heating capacity of the floor heating mat 142 is controlled by changing the duty ratio when the on / off control of the heat valve 76 is performed.

As shown in FIGS. 1 and 5, a signal line 148 from the floor heating mat 142 is connected to the heat source unit 26.
Is connected. The signal line 148 is connected to a thermistor (not shown) for detecting the temperature of the mat 144 of the floor heating mat 142, and the heat source unit 26 detects that the temperature of the mat 144 has exceeded a predetermined value (for example, 31 ° C.). Is detected via the signal line 148, the thermal valve 76 is closed to stop the circulation of the hot water, and the temperature rise of the mat 144 is suppressed.

Control board 17 of heat source unit 26
4, a communication I / F board 136 is provided, and the heat source unit 26 is connected to the relay unit 20 via the communication I / F board 136.

On the other hand, as shown in FIG. 6, the relay unit 20 includes a control board 1 having a microcomputer 150.
The communication I / F board 154 for data communication and the communication I / F board 156 for serial communication are connected to 52.
Further, a temperature detection board 158 and a receiving board 160 are provided in the relay unit 20, and these are connected to the control board 152.

The receiving board 160 is connected to the system remote controller 13.
An operation signal transmitted from 0 is received. That is, as shown in FIG.
0, a reception window 162 is formed.
By operating the system remote controller 130 toward 62, an operation signal transmitted from the system remote controller 130 is received by the receiving board 160.

The system remote controller 130 is used to operate / stop the hot water air conditioner 10, set the set temperature, set or switch the operation mode, set the direction and amount of the conditioned air blown from the outlet 52 of the indoor unit 12, and set the timer. In addition to the functions of a remote control switch used for a general air conditioner such as time setting during operation, etc., it also has a function of operating / stopping floor heating by the floor heating mat 142 and a function of operating the floor heating mat 142 such as temperature setting. It has become a multi-function type.

When the microcomputer 150 of the relay unit 20 receives the operation signal transmitted from the system remote controller 130, the microcomputer 150 uses the operation signal to control the air conditioning operation for the indoor unit 22 and the refrigerant unit 24 and the floor heating device 1
The operation signal for hot water heating for the heat source unit 40 and the heat source unit 26 is separated, and the operation signal for air conditioning is transmitted to the communication I / F board 156.
Is transmitted to the indoor unit 22 by serial communication via the.

The microcomputer 150 of the relay unit 20
When the operation signal for hot water heating is separated from the received operation signal, the heat source unit 2 via the communication I / F board 154
Output to 6. At the same time, the microcomputer 150 inputs the heat source unit 26 and the operating state of the floor heating mat 142 using the heat source unit 26 from the control board 174 of the heat source unit 26 to the communication I / F board 154. In the relay unit 20, the operating state of the heat source unit 26 and the floor heating mat 142 is also sent to the indoor unit 22.

As described above, the microcomputer 100 of the indoor unit 22 performs the air conditioning operation based on the signal input from the relay unit 20. That is, during the heating operation of the hot water air conditioner 10, the heating operation is performed in consideration of the operation state of the heat source unit 26 and the floor heating device 140 input via the relay unit 20.

A radiation sensor 164 for detecting a temperature from infrared rays is provided on a temperature detection board 158 of the relay unit 20.
Is provided. As shown in FIG. 2, the relay unit 20 is provided with a condenser lens 166, and infrared rays emitted from an object to which the condenser lens 166 is directed according to the surface temperature are transmitted to the condenser lens 166. The radiation sensor 164 receives the light through the 166. By using the radiation sensor 164, the surface temperature of the measured object can be detected and output within an error range of 1 ° C. or less. That is, the temperature of the room to be air-conditioned can be accurately detected.

As shown in FIG. 6, the temperature detection board 158 has a temperature detection position by the radiation sensor 164,
That is, a drive mechanism 168 that changes the direction of the condenser lens 166 is provided. This drive mechanism 168
When the motor 170 is driven in response to a signal output from the temperature detection board 158, the condenser lens 166 and the radiation sensor 164 are integrally rotated about a predetermined axis. As a result, the direction of the condenser lens 166 directed to the region where the temperature is detected by the radiation sensor 164 is changed.

The temperature detection board 158 detects the temperature at a plurality of locations within a predetermined range of the room by the radiation sensor 164, and outputs the average value of the detected temperatures to the control board 152 as the room temperature. Usually, the relay unit 20
Microcomputer 150 sends the temperature detected by the temperature detection board 158 to the indoor unit 22 together with an operation signal including the set temperature from the system remote controller 130 as the indoor temperature.

As shown in FIG. 2, the relay unit 20 swings the direction of the condensing lens 166, for example, in the vertical direction so that the surface temperature T of the floor heating mat 142 laid on the floor 13F is increased. _m and indoor wall 1
3w and a predetermined height h from the floor 13F (for example, h = 1m)
It is adapted to detect at least 2 temperature locations of the temperature T _W of.

The heat source unit 26 normally controls the operation based on the operation signal sent from the relay unit 20. At this time, the duty ratio is set based on the set temperature set by the system remote controller 130 and the room temperature including the surface temperature of the floor heating mat 142 detected by the relay unit 20, and the opening and closing of the thermal valve 76 is set at the set duty ratio. (On / off). Thereby, the surface temperature of the floor heating mat 142 is maintained at the set temperature. In the present embodiment, the set temperature of floor heating mat 142 will be described as being the same as the set temperature of hot water air conditioner 10. However, the set temperatures of hot water air conditioner 10 and floor heating mat 142 will be set separately. You may do it.

In the air conditioning system 11, the heating capacity of each of the hot water air conditioner 10 and the floor heating mat 142 is controlled based on the set temperature and the room temperature (surface temperature of the floor heating mat 142). At the time of startup in which heating by the hot water air conditioner 10 and the floor heating mat 142 are simultaneously selected and heating operation is started, the relay unit 20 controls the heating capacity of the hot water air conditioner 10 and the floor heating mat 142 based on the indoor temperature. Has become.

In the control of the heating capacity by the floor heating mat 142, the indoor temperature is divided into a plurality of stages in advance to determine which of the areas is present, and the set temperature is corrected based on the determination result. For example, when the room temperature is low, the correction value of the set temperature is increased, and the correction value is reduced stepwise as the room temperature increases.

Since the heat source unit 26 controls the duty ratio of the heat operated valve 76 so that the surface temperature of the floor heating mat 142 becomes the set temperature, the heating capacity is increased by increasing the set temperature.

On the other hand, in the hot water air conditioner 10 applied to the present embodiment, for example, when the room temperature determined according to the outside air temperature at the start of the heating operation is equal to or lower than a predetermined temperature, the heating capacity exceeds the normal control range. Heating operation (hereinafter referred to as "hot dash").

In the hot water air conditioner 10, the radiator 18 is normally controlled so as to perform a heating operation within a range of 30 ° C. to 50 ° C. by adjusting the variable flow rate valve 68. On the other hand, at the time of hot dash, the flow rate variable valve 68 is fully opened, and hot water of about 80 ° C. supplied from the heat source unit 16 to the radiator 18 is circulated, for example, for 15 minutes. In addition, the time at the time of the hot dash can be set arbitrarily as long as the resin parts and the like in the indoor unit 12 do not deform.

In the hot water air conditioner 10, the relay unit 20
If a signal instructing a hot dash is included in the operation signal input from the controller, the heating operation is performed with the maximum heating capacity exceeding the normal control range. At the time of this hot dash, the amount of heat blown from the outlet 52 is increased by increasing the rotation speed of the cross flow fan 90 or the like.

In the relay unit 20, the hot water air conditioner 10
When the room temperature at the start of heating is lower than a predetermined temperature (for example, temperature T ₂ ), a hot dash is instructed to increase the heating capacity of the hot water air conditioner 10 in accordance with increasing the heating capacity of the floor heating mat 142. Is transmitted.

In the hot water air conditioner 10, when a hot dash is instructed, the room temperature input from the relay unit 20 reaches a predetermined level and the maximum capacity exceeding the normal control range is maintained until the hot dash release is instructed. Perform heating operation. Thus, for example, as shown in FIG. 7 by a two-dot chain line, increase the degree of the room temperature T _R to be heated by hot water air conditioner 10 becomes large when the room temperature T _R is lower than a predetermined temperature. Therefore, so that it is possible to perform the heating operation as the indoor temperature T _R in a relatively short time even lower the room temperature T _R approaches the set temperature T _S.

Next, the operation of the present embodiment will be described. In the air conditioning system 10, operating conditions such as an operation mode and a set temperature of the hot water air conditioner 10 are set by operating the system remote controller 130, and when an operation signal corresponding to the setting is transmitted, the operation signal is received by the relay unit 20. I do. The relay unit 20 separates the received operation signal into an operation signal to be sent to the indoor unit 22 of the hot water air conditioner 10 and an operation signal to be sent to the heat source unit 26 of the outdoor unit 14. The relay unit 20 sends the indoor temperature detected by the radiation sensor 164 to the indoor unit 22 together with the separated operation signal.

Here, when performing the cooling operation by the hot water air conditioner 10, the relay unit 20 transmits the radiation sensor 1 together with the received operation signal from the system remote controller 130.
The room temperature detected by the step 64 is sent to the indoor unit 22. The microcomputer 100 of the indoor unit 22 sets an operation mode, a set temperature, a flow rate, a wind direction, and the like based on the operation signal transmitted from the relay unit 20, and starts the air conditioning operation. At this time, the air-conditioning capacity is controlled based on the room temperature detected by the relay unit 20.

On the other hand, when the heating operation of the hot water air conditioner 10 is set by the switch operation of the system remote controller 130, the relay unit 20 outputs the operation signals necessary for controlling the indoor unit 22 from the operation signals of the system remote controller 130. The operation signal necessary for controlling the heat source unit 26 is separated, and the operation signal necessary for operating the indoor unit 26 is transmitted to the indoor unit 22 together with the indoor temperature.

On the other hand, an operation signal required for the heating operation using the heat source unit 26 is input from the relay unit 20 to the heat source unit 26. In addition, the heat source unit 26 changes the operation state at a predetermined timing to the relay unit 2.
Output to 0. The relay unit 20 includes a heat source unit 26
When a signal indicating the operation state of the heat source unit 26 is input from the controller, a signal corresponding to the input operation state of the heat source unit 26 is transmitted to the indoor unit 22.

Here, when the heat source unit 26 is set to the heating operation, the gas burner 70 is ignited, the pump 62 is operated, and the hot water heat exchanger 64 starts generating hot water. Is circulated with the radiator 18 of the indoor unit 22. Thereby, the conditioned air heated by passing through the radiator 18 from the outlet 52 of the indoor unit 22 is blown out. In the indoor unit 22, the opening degree of the variable flow rate valve 68 is set based on the set temperature, the indoor temperature, and the like, and the heating capacity is controlled by opening the variable flow rate valve 68 in the set step.

On the other hand, when the operation of the floor heating mat 142 is set by operating the system remote controller 130, the relay unit 20 transmits the operation signal received from the system remote controller 130 to the control board 174 of the heat source unit 26.
Send to As a result, the heat source unit 26 opens the thermal valve 76 to start supplying hot water to the floor heating mat 142.

At this time, the microcomputer in the control board 174 turns on / off (opens / closes) the thermal valve 76 at a preset duty ratio. Thereby, the surface of the mat 144 is warmed by the hot water circulated in the hot water tube 146 at predetermined time intervals.

In the air conditioning system 11 provided with the hot water air conditioner 10 and the floor heating mat 142, heating by the hot water air conditioner 10 and floor heating by the floor heating mat 142 are possible. In the air conditioning system 11, heating using either the hot water air conditioner 10 or the floor heating mat 142 can be performed by operating the system remote controller 130.

By the way, when the hot water air conditioner 10 is set to the automatic operation mode when the heating by the hot water air conditioner 10 and the heating of the floor heating mat 142 are performed at the same time, the air conditioning system 11 operates based on the set temperature and the indoor temperature. The operation of the hot water air conditioner 10 is controlled together with the heating capacity of the floor heating mat 142.

The floor using the relay unit 20 will be described below.
Operation control of the heating mat 142 and the hot water air conditioner 10
Will be described. The relay unit 20 is a radiation sensor
164 is used to reduce the surface temperature of the floor heating mat 142 to the temperature T.
_MAs well as the temperature of the wall surface 13W as the temperature T_W
And the temperature T_MAnd temperature T_WThe average value of the room temperature
T_RAnd so on. At this time, the temperature T_M, T_W
Is detected at a plurality of locations and the room temperature T_RTo calculate
You may. Also, in the relay unit 20,
Temperature T₁, T_Two, T_Three(T₁<T_Two<
T_Three, For example T₁= 15 ° C, T_Two= 20 ° C, T_Three=
25 ° C) to control heating capacity in 4 steps
doing. At this time, the heating capacity of the floor heating mat 142
Is the set temperature set by the system remote control 130
Degree T _SETFor the correction temperature t₁, T_Two, T_Three(T₁<
t_Two<T_Three) Is added to the set temperature T_STo set
doing. For example, the correction temperature t₁, T_Two, T_ThreeIs the correction
Temperature t_ThreeTo the maximum value (t_MAX) As the correction temperature t₁, T
_TwoTo t₁= T_Three× 0.3 (= 0.3
t_MAX), T_Two= T_Three× 0.6 (= 0.6t_MAX)
Although it may be set based on the maximum value or the minimum value,
For example, t₁= 2 ° C, t_Two= 4 ° C, t_Three= 6 ° C
For example, a value may be set in advance. Also, correct
Set temperature T_SIs a preset temperature T_SMost
If it exceeds a large value (for example, 31 ° C), set the maximum value.
Constant temperature T_SIt is preferable that

[0085]

[Table 1]

FIG. 8 shows an example of the heating capacity control executed by the relay unit 20. This flowchart shows the heating operation of the hot water air conditioner 10 and the floor heating mat 142.
Is performed by setting the floor heating operation by the instruction and instructing the start of the operation. That is, in the air-conditioning system 11, the process is executed when the heating operation by the hot water air conditioner 10 and the floor heating mat 142 is started.

In the first step 300, it is confirmed whether or not the hot water air conditioner 10 is set to the automatic operation mode. At this time, if the automatic operation has not been set, the process proceeds to step 302 and the set temperature T _SET set by the system remote controller 130 is set as the set temperature T _S , and each of the hot water air conditioner 10 and the floor heating mat 142 is set to the normal temperature. Set so that control is performed.

On the other hand, when the automatic driving mode is set, an affirmative determination is made in step 300 and
And later to 4, reads the room temperature T _R, which is calculated by measuring the temperature T _M and the temperature T _W. In the next step 306, compares the room temperature T _R and the set temperature T _S (set temperature T _SET), or the room temperature T _R is equal to the set temperature T _S, the closer (e.g. temperature difference is within 2 ° C, If the room temperature TR is higher than the set temperature T _{S (} including the case where the room temperature T _R is higher than the set temperature T _S ), the process proceeds to step 302 to set the normal control.

[0089] In contrast, when the room temperature T _R is low, the process proceeds to step 308 to 312. In step 308 to 312, and determines whether located in any of the temperature range the room temperature T _R is set in advance, a relatively high room temperature T _R, when it exceeds a temperature T ₃ (T ₃ ≤
The T _R), is affirmative determination in step 308 is set to the normal control (step 302).

[0090] In this case, the room temperature T _R is extremely low temperature T
₁ or less (T _R <T ₁₎ when was the step 31
A negative determination is made in step 2, and the process proceeds to step 314. In this step 314, the set temperature T of the floor heating mat 142
Correct _S to maximum. That is, the system remote controller 13
0 by adding the correction temperature t ₃ the set temperature T _SET set by the set temperature T _s.

When the room temperature T _R is equal to or higher than the temperature T ₁ and lower than the temperature T ₂ , an affirmative determination is made in step 312, and the process proceeds to step 316. In this step 316, the set temperature T _S of the floor heating mat 142 is changed to the correction temperature t ₃
It is corrected by a lower correction temperature t _2.

The heating capacity of the floor heating mat 142 is increased by correcting the set temperature T _S in this manner so that the set temperature T _S is increased, and even if the room temperature T _R is low, the floor temperature can be reduced in a relatively short time. Can be raised.

[0093] On the other hand, if the room temperature T _R is lower than the temperature T ₂ (negative determination in step 310), step 318
Is executed, and the hot dash of the hot water air conditioner 10 is set. That is, the heating capacity of the hot water air conditioner 10 is set to a heating capacity exceeding the normal capacity range. Accordingly, the heating capacity of the hot-water air conditioner 10 is also increased in accordance with the control of the heating capacity of the floor heating mat 142 to be increased. Heated rapidly.

[0094] In addition, a relatively high room temperature T _R, when was temperature T ₂ or more _{(T 2 ≦ T R <T} 1) is a positive determination in step 310, the process proceeds to step 320. In step 320, the set temperature T _S of the floor heating mat 142 is corrected at the correction temperature t ₁ which is set to be the lowest. As a result, the heating capacity of the floor heating mat 142 is set slightly higher than that in the normal control, and the floor heating is performed with a heating capacity larger than that in the normal control.

On the other hand, the hot water air conditioner 10 is set to normal control without performing hot dash (step 32).
2). At this time, hot water air conditioning 10, since the operation while controlling the heating capacity on the basis of the room temperature T _R and the set temperature T _S (set set by the system remote control 130 temperature T _SET), it is possible to appropriate heating .

[0096] Thus the relay unit 20, by controlling the heating capacity on the basis of the room temperature T _R, for example, when the room temperature T _R is very low, up operation up first a large heating capacity is started, while being lowered stepwise heating capacity with increasing room temperature T _R, smoothly room temperature T _R is brought close to the set temperature T _S.

Therefore, when the room temperature is low, a feeling of insufficient heating capacity does not occur, and the room is comfortably heated by the floor surface and the warm air blown from the indoor unit 12. At this time, the relay unit 20, not only the room temperature (the temperature of the position away from the floor), since the calculated room temperature T _R, including the surface temperature of the floor heating mat 142, the floor heating mat 142 The room can be heated in a well-balanced manner while preventing the heating capacity from becoming too large or being suppressed.

In the present embodiment, the hot water air conditioner 1
0 detects the indoor temperature used when controlling the heating capacity by the relay unit 20.
For example, the indoor temperature may be detected by a temperature sensor separately provided in the indoor unit 22 or the like, and the heating capacity may be controlled based on the detected indoor temperature. Also in this case, on the basis of the room temperature T _R detected by the relay unit 20 may be collectively limit the heating due to heating and floor heating mat 142 by hot air conditioner 10.

In this embodiment, the floor heating mat 1
The temperature on the 42 and the indoor temperature T _R, but the relay unit 2
Room temperature T _R to detect the 0 may be detecting the temperature of any area to be the set temperature during the heating, thereby efficiently as region temperature detected by the relay unit 20 becomes the set temperature T _S Heating can be performed.

In the present embodiment described above, the configuration of the present invention is not limited. In the present embodiment, an air conditioner and a hot water air conditioner 1 using hot water for heating are used.
Although described using 0, the present invention can use a general air conditioner that performs a heating operation together with cooling using a refrigeration cycle in which a refrigerant circulates.

Further, in the present embodiment, a hot-water floor heating mat 142 for heating with hot water generated by the heat source unit 26 is used as the floor heating unit, but the floor heating unit is heated using an electric heater. A floor heating carpet or the like can be used. In this case, the relay unit 20 may limit the heating capacity (for example, power consumption) of the electric floor heating carpet or the like.

Thus, conventionally, the air conditioner and the floor heating unit individually perform the heating capacity control collectively, so that efficient heating and energy saving can be achieved.

In this embodiment, the floor heating mat 1
Although the relay unit 20 is provided separately from the indoor unit 22 of the hot water air conditioner 10, the relay unit 20 may be built in the indoor unit 12 together with the indoor unit 22. Also, the function of the relay unit 20 is also provided to the indoor unit 20 of the hot water air conditioner 10,
The indoor unit 22 may limit the heating capacity of the floor heating mat 142 together with the heating capacity of the hot water air conditioner 10.

[0104]

As described above, according to the present invention, not only the air conditioner but also the floor heating device controls the heating capacity based on the indoor temperature when starting the heating operation. Even if the temperature is low, an excellent effect can be obtained in which the desired temperature can be approached in a short time.

Further, according to the present invention, since the room temperature is set to include the temperature of the floor, it is possible to reliably prevent insufficient or excessive floor heating. Furthermore, in the present invention, when the room temperature is extremely low, the heating operation is performed with the heating capacity of the air conditioner being larger than the normal capacity, so that the startup and heating can be performed in a shorter time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a hot water air conditioner applied to the present embodiment.

FIG. 2 is a schematic diagram showing an arrangement of an indoor unit, a relay unit, and a floor heating mat of the hot water air conditioner.

FIG. 3 is a schematic system diagram showing a flow path of a refrigerant and hot water of the hot water air conditioner applied to the present embodiment.

FIG. 4 is a schematic diagram showing a board configuration of an electric circuit of the indoor unit.

FIG. 5 is a schematic diagram showing a substrate configuration of an electric circuit of the heat source unit.

FIG. 6 is a schematic configuration diagram showing a relay unit applied to the present embodiment.

FIG. 7 is a diagram illustrating an example of a change in room temperature when heating a room with a hot water air conditioner;

FIG. 8 is a flowchart showing an outline of heating capacity control by a relay unit.

[Explanation of symbols]

 Reference Signs List 10 Hot water air conditioner (air conditioner) 11 Air conditioning system (heating system) 12 Indoor unit (air conditioner) 14 Outdoor unit (air conditioner, floor heating device) 20 Relay unit (temperature detecting means, control means) 22 indoor unit ( Air conditioner) 24 refrigerant unit (air conditioner) 26 heat source unit (air conditioner, floor heating device) 130 system remote controller 140 floor heating device 142 floor heating mat (floor heating device) 152 control board (control means) 158 temperature detection Substrate (temperature detecting means) 164 Radiation sensor (temperature detecting means)

Claims (5)

[Claims] 1. An air conditioner for heating a room to a set temperature by blowing air controlled by a heat exchanger provided in the indoor unit from the indoor unit, and a floor heater laid on a floor of the room. A floor heating device that heats the room from the floor by a unit, and detects a floor temperature or a floor surface temperature heated by the air conditioner and the floor heating device and a temperature at a predetermined height from the floor as a room temperature. Temperature detection means, and control means for controlling the heating capacity of the floor heating device or the floor heating device and the air conditioner based on the room temperature detected by the temperature detection device at the start of the heating operation by the air conditioner and the floor heating device. And a heating system comprising: 2. The heating system according to claim 1, wherein the temperature detecting unit sets an average value including the floor surface temperature and the wall surface temperature at the predetermined height as a room temperature. 3. The floor heating device according to claim 1, wherein the control means controls the heating capacity of the floor heating device stepwise according to the floor surface temperature detected by the temperature detection means. Heating system. 4. The control of the heating capacity of the floor heating device by the control means corrects a set temperature of the floor heating device, and the heating operation of the floor heating device is performed based on the corrected set temperature. The heating system according to claim 3, wherein: 5. The air conditioner performs a heating operation at a maximum capacity exceeding a heating capacity set in a normal operation when the room temperature detected by the temperature detection means is less than a predetermined value. The heating system according to any one of claims 1 to 4, wherein the heating system is controlled as described above.