JPH09145069A - Heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten build-up time of floor heating and hence make the floor heating comfortable by providing floor heating and air conditioning heat exchangers through which a heat medium flows, and further providing heat insulation means for keeping temperature of the heat medium in the floor heating heat exchanger at a predetermined temperature or higher upon interruption of floor heating and air conditioning heating operations. SOLUTION: Heating operation is adapted such that it includes a floor heating heat exchanger (mat) 46 through which a heat medium heated with a heater in an outdoor machine 2 flows, an air conditioning heat exchanger 5, and a controller for controlling the operation of the heater and the circulation of the heat medium wherein heating operation and air conditioning heating operation are ensured. In the heating operation, in the case where no heating operation by an indoor machine is performed when a user when desired heat insulation control performs corresponding switch operation, the control is transferred to the heat insulation control. More specifically, water temperature is first judged with a warm water sensor, and when water temperature reaches 30 deg.C or lower for example, the warm water is heated and circulated. On the contrary, the water temperature is judged with the warm water sensor, and when it becomes 40 deg.C or higher for example, the operation of the heater is interrupted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating device for heating by circulating a heat medium such as hot water in a heat exchanger for floor heating or a heat exchanger for air conditioning.

[0002]

2. Description of the Related Art An example of an air conditioner that circulates a heating medium such as hot water in a heat exchanger to control the temperature of indoor air is, for example,
There is one described in Japanese Examined Patent Publication No. 5-29829.
In such an air conditioner, warm water is circulated in the heat exchanger, and the room air is adjusted in temperature by passing the room air through the heat exchanger. And, in such an air conditioner, the flow rate of hot water to be circulated in the heat exchanger is
For example, a method of adjusting the heat radiation amount of the heat exchanger by adjusting with a control valve is generally adopted.

[0003]

In the above-mentioned air conditioner, a floor heating heat exchanger such as a mat can be connected, and heated hot water is caused to flow in the floor heating heat exchanger so that the floor heating Some can be heated. In such an air conditioner, when the floor heating operation of the air conditioner is started in the cold morning of winter, etc., the hot water is cooled to the outside temperature, so the temperature does not rise easily, and the floor heating rise time Had the drawback of taking a long time.

The present invention provides a heating device having a fast rise time for floor heating.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 provides a heater, a heat exchanger for floor heating through which a heat medium heated by the heater flows, and an air conditioner. In a heating device that includes a heat exchanger and a controller that controls operation of the heater and circulation of a heat medium, and enables a floor heating operation and a heating operation for air conditioning, the controller includes a floor heating operation. A warming means is provided for keeping the temperature of the heat medium in the heat exchanger for floor heating at a predetermined temperature or more when the air conditioning heating operation is stopped.

According to a second aspect of the present invention, the heating device according to the first aspect is provided with a heat retaining switch for causing the heat retaining means to function.

According to a third aspect of the present invention, the heating device according to the first aspect is provided with a setting device for setting a time at which the heat retaining means is operated.

In the heating device according to the first to third aspects, the temperature of the heat medium in the floor heating heat exchanger is maintained at a predetermined temperature or higher by the holding means.

In the heating device according to the second aspect of the present invention, by pressing or not pressing the heat retention switch, the heat retention means can be activated or deactivated depending on the preference of the user. .

In the heating device according to the third aspect, the time at which the heat retaining means is operated can be set by setting the setting device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral 1 shown in FIG. 1 is an air conditioner provided with a heating device of the present invention. In this air conditioner, of course, heating operation for air conditioning and floor heating operation are possible, and cooling operation and Dry operation is also possible. Air conditioner 1
Is mainly composed of the outdoor unit 2 and the indoor unit 5. A cover 60 covers the connecting portions 22, 22A, 23, 23A (described later). Reference numeral 71 is a hot water outlet, 72 is a hot water plug, 46 is a floor heating mat (floor heating heat exchanger), and 46A is an overmat covering the mat 46.

Reference numeral 10 shown in FIG. 2 denotes a hot water circuit, and 11,
11A is a shutoff valve for gas serving as fuel, 12 is a gas proportional valve,
13 is a gas burner (a burner using kerosene as fuel or a heater such as an electric heater may be used), 14 is a gas connection port, 1
5 is a circulating water tank for heating, 16 is a drain tank, 17 is a drain connection port, 18 is a circulation pump, 19 is a hot water heat exchanger heated by a burner, 20 is a circulation pump 18 or the burner 1
A controller constituted by a microcomputer or the like for controlling the device 3, 21A, 21B, 21C, 21D are hot water pipes for connecting the respective devices, 22, 22A, 23, 2
3A is a connection part. Reference numeral 98 is a hot water sensor for detecting the hot water temperature.

Reference numeral 30 denotes a refrigerant circuit, 31 is a compressor for compressing the refrigerant, 99 is an outdoor heat exchanger, 32 is a pressure reducing device using a capillary tube, 33 and 34 are service valves, 35 is a muffler, 36 Is an accumulator, 3
7A, B, C, D, E, and F are refrigerant pipes for connecting respective devices. A controller 97 controls the compressor 31 and the like.

Reference numeral 40 in the indoor unit 5 indicates a hot water heat exchanger for heating (air conditioner heat exchanger), 41 indicates a refrigerant heat exchanger for cooling,
42 is an indoor temperature sensor, 43 is a hot water sensor, 44 is a controller including a microcomputer, and 45 is a thermal valve for controlling the hot water flow rate. The heat exchanger 40 is arranged on the secondary side (leeward side) of the heat exchanger 41. Further, the controller 44 performs fuzzy calculation every 30 seconds based on the deviation between the room temperature and the set temperature detected by the temperature sensor 42, and controls the opening degree of the thermal valve 45 every 3 minutes based on this calculation. To do.

Reference numeral 46 is a floor mat for floor heating through which a heat medium such as an antifreeze liquid (which may be tap water or a heat medium such as a refrigerant) is flowed. 47 and 48 are hot water pipes, 49 and 50
Is an auxiliary refrigerant pipe.

The opening of the thermal valve 45 is controlled in 50 steps from 0 step (fully closed) to 49 steps (fully opened), for example.

Although the indoor unit 5 and the outdoor unit 2 are provided with fans for blowing air to the indoor and outdoor heat exchangers, they are not shown in FIG.

FIG. 3 shows the relationship between the controllers, and the controller 44 is for controlling the indoor unit 5, and is a device inside the refrigerant circuit and the hot water circuit, such as an indicator lamp 96,
The fan motor 95, the louver 94, the thermal valve 45, etc. are controlled. The controller 44 also sends and receives signals to and from the outdoor controller 97. The controller 97 controls the refrigerant circuit on the outdoor side, and controls, for example, the compressor 31 and the outdoor unit fan motor 93. The controller 20 controls the hot water circuit on the outdoor side, and controls the burner 13 and the circulation pump 18, for example. Therefore, when the light receiving unit 92 receives a signal for starting the heating operation from the remote controller 54, the controller 4
4 sends a signal to the controller 97, and the controller 97 receiving this signal sends a signal to the controller 20. Then, the controller 20 controls the burner 13 and the pump 18, and sends a detection signal from the hot water sensor 98 to the controller 44 via the controller 97.
Then, the signal from the hot water sensor 98 and the room temperature sensor 42
The controller 44, which receives signals from the
It controls the indoor side of the thermal valve 45, the louver 94, the fan motor 95, etc., and also transmits a signal to the controller 20 via the controller 97 for controlling the outdoor side. As described above, the signal from the controller 44 enters the controller 97 and then is sent to the controller 20.

Further, the controller 44 carries out heat retention control in accordance with a control flow stored in a read-only memory (not shown). Briefly explaining this heat retention control, the hot water temperature is controlled so as not to fall below 30 ° C. during a certain time zone (from 23:00 to 6:00 in the case of automatic setting, and according to the set time in the case of manual setting). By doing so, the control is intended to shorten the rise time of the floor heating operation. Therefore, it may be considered that the controller 44 includes a heat retaining unit.

FIG. 4 shows a wireless remote controller 54. In FIG. 4, 55 is a display section using liquid crystal, and all the displays are shown for convenience. Reference numeral 56 denotes an operation switch for controlling the operation so that the operation of the indoor unit is started when the switch is pressed when the operation is stopped, and the operation of the air conditioner is stopped when the switch is pressed during the operation. Reference numeral 57 is an operation mode changeover switch, and 58 is a switch 58 for setting floor heating operation. When this switch 58 is pressed once, the characters "floor heating" 55A and "high" are displayed on the liquid crystal display unit 55, and "floor heating high" is displayed. When it is pressed again, the display 55 displays “Floor heating”, when the switch 58 is pressed again, “Floor heating low” is displayed on the display 55, and when the switch 58 is pressed again, the display 55 “ Floor heating
The "low" indicator disappears.

Reference numeral 59 is a humidity setting switch, 60 is a room temperature setting switch, 61 is a setting switch for setting the direction of the louver (airflow direction changing plate), 62 is an air volume switching switch, and 63 is a heat retaining means. Insulation switch,
64 is a cover for covering various switches. Reference numeral 65 denotes a switch for setting the timer operation or confirming the timer operation. When the switch is pressed once, the set timer operations are sequentially displayed. This switch and the time setting switch (setting device) 68 are pressed. And the time of the timer operation (operation start time and stop time) can be set, and the time can be set by the "return" and "advance" switches (setters) 66 and 67. . Further, when setting this time, the operation mode, the set temperature, the direction of the louver, and the air volume can be set by the changeover switch 57, the room temperature setting switch 60, the switch 61, and the air volume changeover switch 62. Has become. Switches 66, 6
Reference numerals 7 and 68 correspond to the setting device described in the claims, and can set the start time and the stop time of the heat retention control as described later.

In the air conditioner (heating device) configured as described above, the user keeps warmth (controls to keep hot water temperature).
If desired, press the heat retention switch 63. At this time, depending on how the switch is pressed, it is possible to select between automatic setting in which the heat retention is automatically controlled and manual setting in which the heat retention time can be manually set. Then, by pressing the switch 63, "floor heating" and "heat retention" are displayed on the display 55.

First, it is assumed that the user selects the automatic setting. When the user operates the switch 63 so as to turn it on within 2 seconds, the automatic setting is selected and the control is started. Then, it is determined whether or not the current time is a time at which heat retention control is performed, that is, whether or not the current time is within the time period from 23:00 to 6:00 (S3). The current time is 2
If it is not within the time of 3 to 6 o'clock, it is waiting for this 23:00. When the current time is 23:00, it is determined whether or not the heating operation by the indoor unit is being performed (S4). During this heating operation, since the temperature of the hot water (heated antifreeze liquid) is high due to the operation of the burner 13, the heat retention control is not performed. If the indoor unit is not heating,
Performs heat retention control. First, it is determined whether the temperature detected by the warm water sensor 98 (warm water temperature) is lower than 30 ° C. (S5). 30
If the temperature is not lower than 0 ° C., it is determined that the temperature of the hot water is high and the floor heating operation starts up relatively quickly, and the burner 13 does not heat the hot water. Then, the temperature of the hot water is continuously detected. When the temperature of the hot water becomes lower than 30 ° C., it is determined that the temperature of the hot water is low and the rise of floor heating is delayed, and the burner 13 heats the hot water (S6). Of course, at this time, the circulation pump 1 is interlocked with the operation of the burner 13.
8 is also driven. Therefore, the hot water circulates in the hot water circuit excluding the heat exchanger 40. Then, it is determined whether or not the hot water temperature is 40 ° C. or higher (S7), and if the hot water temperature is lower than 40 ° C., the burner 13 is continuously operated, and when the hot water temperature is 40 ° C. or higher, the burner 13 is operated. Is stopped (S8). And the current time is the heat insulation stop time (6:00)
It is determined whether or not it has passed (S9). If the current time has not passed the heat retention stop time, the temperature of the hot water is 30
The control moves to a control flow S5 for determining whether or not the temperature is lower than ° C.
If the current time has passed the heat retention stop time, the heat retention control ends.

In this way, the warm water for floor heating is kept warm so that it does not fall below 30 ° C. (beyond the predetermined temperature of 30 ° C.), so that the warming time (23:00 to 6:00) or At a time slightly after this time, the temperature of the hot water rapidly rises at the start of floor heating, the floor heating operation rises quickly, and the floor heating operation can be comfortably performed. For example, the conventional type (without heat retention control) requires about 10 minutes for the rising time,
In the case of the present application, the floor mat becomes sufficiently warm in about 3 to 4 minutes, and the floor heating operation can be comfortably used.

Next, a case where the heat retention control is manually set by the user will be described. User keeps heat switch 63
Is operated for more than 2 seconds, the manual setting is selected and controlled. Then, the operation disclosure time is displayed on the display 5
Flashes at 5. The heat retention start time is set with the return switches 66 and 67 that are advanced during this blinking. When the start time has been set, the time setting switch 68 is pressed, and when this switch is pressed, the heat retention stop time is displayed in a blinking manner, and the time is set using the return and return switches 66 and 67. When the time is set, the time setting switch 68 is pressed again to set the heat retention start time and the heat retention stop time (S10). Then, it is determined whether or not the heat retention start time has come (S11), and when the heat retention start time has come, the automatic setting S
Control continues to the control flow of No. 4. Hereinafter, since the control flow is the same as the automatic setting, the description thereof will be omitted. Therefore, the hot water temperature to be kept warm is the same temperature in both automatic setting and manual setting. In the case of manual setting, the warming start time and the warming stop time can be set by the user's request, which is different from the case of automatic setting. .

In the case of such manual setting, when the heat retention start time and the heat retention stop time are set to 5 am and 7 am, the heat retention time can be set to be much shorter than the automatic setting. It is possible to save the gas.

The automatic setting and the manual setting are also released by pressing the heat retention switch 63 again, and the "floor heating heat retention" display on the display 55 disappears.

The word "set the time for operating the heat retaining means" in this specification means that the time for starting the operation of the heat retaining means (for example, 11:00 pm, etc.) is set according to the wording. Of course, this is also meant to mean that the setting is made to start the operation several hours (for example, three hours) from the current time. At this time, in order to automatically stop this operation, the duration of the operation must be set at the same time.

Next, different embodiments will be described.
The air conditioner 1A shown in FIG. 6 is different only in the air conditioner 1A shown in FIG. 1 and its floor heating heat exchanger 80 (other parts are exactly the same as those shown in FIGS. 2 to 5), The floor heating heat exchanger 80 is embedded in a flooring 81 of the flooring. Reference numeral 82 is a heat insulating material.

In the air conditioner of such an embodiment, when the surface temperature of the floor material 81 drops to, for example, 2 ° C. in the severe winter season, the surface temperature of the floor material 81 rises to 25 ° C. It took about 4 hours. this is,
It takes time for the heat of the heat exchanger for floor heating to be transferred to the floor material, the area and heat capacity of the floor material are very large,
In addition, it is considered that it takes such a long time because there are factors such as heat escaping to the outside. Therefore, the present invention is applied to such an air conditioner 1A, and the temperature of the heat medium is kept at a certain temperature (in the case of the present invention, a temperature that does not fall below 30 ° C.) to obtain the temperature of the heat medium. Since it does not fall extremely, the rise time of floor heating can be greatly shortened. Therefore, floor heating of the air conditioner 1A can be comfortably used.

Further, since the heat medium is kept warm and the temperature is high to some extent, even when the air conditioner heat exchanger is used (when the air conditioner heating operation is performed), according to the air conditioners 1 and 1A, the rising time is increased. Can be shortened.

[0032]

In the heating device according to the first to third aspects, since the temperature of the heat medium in the floor heating heat exchanger is maintained at a predetermined temperature or higher by the heat retaining means, the rise time of floor heating is shortened. It is possible to use the floor heating comfortably.

In the heating device according to the second aspect of the present invention, it is possible to activate or deactivate the heat retaining means by pressing or not pressing the heat retaining switch. Accordingly, the heat retaining function of the heat retaining means can be used.

Further, in the heating device according to the third aspect of the present invention, the time for operating the heat retaining means can be set by the setting by the setting device. Therefore, by setting the time for operating the heat retaining means to be short, the heat retaining means can be set. The energy required for can be greatly saved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of an air conditioner (heating device) of the present invention.

FIG. 2 is a refrigerant and hot water circuit diagram of this air conditioner.

FIG. 3 is a control circuit diagram showing a control relationship of this air conditioner.

FIG. 4 is a plan view showing a wireless remote controller of this air conditioner.

FIG. 5 is a flowchart showing a control operation of a heat retaining means of this air conditioner.

FIG. 6 is a perspective view showing another embodiment of the air conditioner.

[Explanation of symbols]

 1, 1A Air conditioner (heating device) 13 Burner (heater) 40 Heat exchanger (heat exchanger for air conditioning) 44 Controller (heat retaining means) 46 Mat (heat exchanger for floor heating) 63 Heat retention switch 66, 67 Switch (setting device) 68 Time setting switch (setting device) 80 Heat exchanger for floor heating

Claims (3)

[Claims] 1. A heater, a heat exchanger for floor heating and a heat exchanger for air conditioning through which a heat medium heated by the heater flows, and a controller for controlling the operation of the heater and the circulation of the heat medium. In a heating device that is capable of performing floor heating operation and air conditioning heating operation, the controller includes the floor heating heat exchanger when floor heating operation is stopped and when air conditioning heating operation is stopped. A heating device provided with a heat retaining means for keeping the temperature of the heat medium at a predetermined temperature or higher. 2. A heater, a heat exchanger for floor heating and a heat exchanger for air conditioning through which a heat medium heated by this heater flows, and a controller for controlling operation of the heater and circulation of the heat medium. In a heating device that is capable of performing floor heating operation and air conditioning heating operation, the controller includes the floor heating heat exchanger when floor heating operation is stopped and when air conditioning heating operation is stopped. A heating device provided with a heat retaining means for keeping the temperature of the heat medium at a predetermined temperature or higher, and a heat retaining switch for causing the heat retaining means to function. 3. A heater, a floor heating heat exchanger and an air conditioning heat exchanger through which a heat medium heated by the heater flows, and a controller for controlling the operation of the heater and the circulation of the heat medium. In a heating device that is capable of performing floor heating operation and air conditioning heating operation, the controller includes the floor heating heat exchanger when floor heating operation is stopped and when air conditioning heating operation is stopped. Insulating means for keeping the temperature of the heat medium above a predetermined temperature is provided, and an insulating switch for operating this insulating means,
A heating device comprising a setting device for setting a time at which the heat retaining means is operated.