JPS63194148A - Air-conditioner - Google Patents

Abstract

PURPOSE:To permit the proper use of either warm-air heating or radiation heating and improve the comfortable property of heating, by a method wherein the ventilating function of an indoor fan is reduced when radiation heating operation is selected in the selection of either one of warm-air heating operation or the radiation heating operation. CONSTITUTION:Either one of warm-air heating operation or radiation heating operation is selected by an operation selecting switch 15 being an operation selecting means and a radiation control means 16 controls the ventilating function by an indoor fan 13 so as to reduce said function when the radiation heating operation is selected. When the warm-air heating operation is selected by the operation selecting switch 15, the indoor fan 13 of an indoor unit 12 is operated and indoor air is heated by an indoor heat exchanger 4 while flowing through a ventilating passageway 23, and the indoor fan 13 is controlled in accordance with a difference between a room temperature and a set temperature. In this case, refrigerant is flowing through a radiation heat exchanger 3, therefore, radiation heat from a heat radiating panel 24 is emitted to the indoor. When the radiation heating operation is selected, the radiation control means 16 receives a command from the operation selecting switch 15 and outputs a signal to reduce the ventilating function of the indoor fan 13 to a controller 14 whereby the controller 14 controls an indoor fan motor 13M.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an air conditioner that has a radiant panel and is equipped with an indoor fan and is capable of heating operation.

(Prior art) Conventionally, heating in an air conditioner equipped with a heat pump type refrigeration cycle is performed by operating an indoor fan in the indoor unit to circulate the indoor air through a total indoor heat exchanger and blowing warm IK into the room. ing.

However, although such heating using warm air is very effective in warming the entire room, it has drawbacks such as the fact that the wind causes discomfort to the human body. Another drawback is that the heating sensation is weaker than kerosene heaters, which can quickly warm up cold hands and feet.

Therefore, in addition to ventilation hot air heating, there are some that use radiant heating. In this system, a heat radiation panel is installed on the front of the indoor unit, and a refrigerant pipe is attached to the back side of the heat radiation panel, and the heat of the high-temperature refrigerant flowing through the refrigerant pipe is radiated indoors through the heat radiation panel. It provides exceptional heating effects not found in hot air heating, such as being able to quickly warm up your hands and feet by placing your arms and legs over the heat radiant panel.

However, in this case, the actual situation is that the 82 warm air chambers and radiant heating have not been used appropriately, making it impossible to fully utilize the functions of each, and resulting in improvements in terms of comfort. There was very little room.

- (Problem to be solved by the invention) This invention was made in view of the above circumstances.
For this purpose, it is possible to appropriately use hot air heating and radiant heating, and the functions of hot air heating and radiant heating can be fully demonstrated, which greatly improves the comfort level. We provide air conditioning S that enables improved performance.

[Structure of the invention]

(Means for Solving the Problems) A refrigeration cycle consisting of a pressure B machine, a radiant heat exchanger, an indoor heat exchanger, a decompression device, and an outdoor heat exchanger connected in sequence, and the above-mentioned indoor heat exchanger and indoor fan are provided. and an indoor unit having a thermal radiation spring /I/ exposed indoors and the radiant heat exchanger attached to the thermal radiation panel, and an operation for selecting hot air heating operation and radiant heating operation in heating operation. f#,
The air conditioner includes a selection means and a means for reducing the ventilation function of the city fan when the radiation operation is selected by the operation selection means than during the warm air heating operation.

(Sakukawa) With the above configuration, it is possible to fully select either warm air@fan operation or radiant V&fan operation using the operation selection means, and in the radiant heating operation, radiant heating that reduces the air blowing function of the indoor fan can be selected. The control means can reduce the blowing function of the indoor fan during the radiant heating operation compared to the warm air heating operation.

(5j! Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In Fig. 1, the refrigeration cycle 1LI has a pressure N machine 1, 9 f2 on all sides, 3 radiant heat exchangers, 4 indoor heat exchangers, and 5
, outdoor heat exchangers 6 are successively connected via refrigerant pipes 7.

In this embodiment, a four-way valve 2 is provided in the refrigeration cycle, and the refrigeration cycle can perform both cooling and heating by switching the four-way valve 2. Therefore, the radiant heat exchanger 3 and the indoor heat exchanger 4 are A pipe line 8 that directly connects and a pipe line 9 that bypasses the radiant heat exchanger 3,
Check valves 10 and 11 are provided for each, and during cooling (dashed line arrow)
K prevents the refrigerant from flowing into the radiant heat exchanger 3, and allows it to flow only during heating (solid arrow).

When installing the radiant exchanger 3 and the indoor heat exchanger 4, an indoor fan 13 is installed in the indoor unit 12.

This indoor fan 13 is driven by the indoor fan Tanabata 13A1, and the indoor fan Tanabata 13M is driven by the control circuit 14.
controlled by Further, an outdoor fan 17 is provided at a position facing the outdoor heat exchanger 6.

Next, 15 is an operation selection switch which is an operation selection means,
Depending on this method, either hot air heating operation or radiant heating operation can be selected. 16, when the radiation heating operation is selected by the operation selection means 15, the radiation control means performs control to reduce the ventilation function of the indoor fan 13.

FIG. 2 shows the structure of the indoor unit 12.

The indoor unit 12 is, for example, a bed fermentation type indoor unit, which has an air blowing item 21 in the upper part of a box-shaped case 20, an air suction port 22 in the lower part, and a vertically elongated ventilation Vt23 formed inside. Inside, an indoor heat exchanger 4 is housed in an arrangement intersecting with this, and an indoor fan 13 is housed in an arrangement facing the sudden air suction port 22.

The front surface 01l) of the case 20, that is, the palmar surface (all K
A heat radiation panel 24 is provided in an exposed state to the interior of the room. In addition, a radiant heat exchanger 3, which is a refrigerant pipe, is provided on the back side of the thermal radiation spring/L/24, and a heat insulating material is attached to the back of the radiant panel 24, covering the radiant heat exchanger 3. There are 25. Note that 26 is a drain receiver.

Next, the control action will be explained using FIGS. 1 to 3.

During heating, the refrigerant is discharged from the compressor 11 as shown by the solid arrow in FIG. It sequentially flows through the valve 2 and returns to the compressor 11.

In this case, the refrigerant heats the thermal radiation panel 24 by passing through the radiant heat exchanger 3 in the form of a high-temperature gas. Thereafter, the refrigerant condenses in the seedling-side exchanger 4 and radiates heat, thereby heating the indoor air.

FIG. 3 is a flowchart showing the control action.

When starting heating operation, warm air heating operation (U in the diagram)
Operation selection switch 1 for either radiation/heating operation (R in the diagram)
5 (step 101).

If the hot air heating operation (Tl) is selected here, the normal hot air heating operation is performed (step 102).

In the normal warm air heating operation, the city fan 13 of the indoor unit 12 described above is operated, and while the city air is flowing through the ventilation path 23, it is humidified by the indoor heat exchanger 4. Konoto! 8
The indoor fan 13 is controlled according to the difference between the room temperature and the set temperature,
The blowing sound is set to, for example, "strong,""medium," or "weak" depending on the magnitude of the difference. Also, at this time, since the refrigerant is also flowing to the radiant heat exchanger 3, the radiation exposure of the thermocouple panel 241 is given to the interior of the room.

If the radiant heating operation (IL) is selected in (step 101), a radiant-based heating operation is performed (step 103).

In this case, the radiation control means 16 receives a command from the operation selection switch 15, outputs a signal to the control device 14 to reduce the ventilation function of the indoor fan 13, and in response to the signal, the control device 14 controls the indoor fan motor. Controls 13M. To control the blower/performance reduction of the city fan 13, turn the city fan 13 OFF.

■ Intermittent ON/OFF switching, ■ Low-speed operation (set the air flow rate to "weak" or lower in warm air!2-chamber operation), but in this example, the indoor fan 13
is turned OFF (step 104). When Matako (7)
Although the pressure i7'ie ((3ornp)1 is turned on, the capacity is reduced in accordance with the load of the heat exchanger.

After that, a comparison is made between the set temperature (Ts) and the room temperature ff (Ta). For example, if Ta is 2°C or more higher than Ts,
A determination is made as to whether or not it will rise (Ta - Ts≧2) (step 105). If this judgment is NO, it's 1
Since I need an i cell, I repeat the first operation.

On the other hand, if the determination in step 105 is YES, it is determined that the city temperature Ta is 2°C higher than the set temperature Ts, resulting in overheating (and the compressor (Oomp) x is also turned off (step 106). The reference value 2 in (step 105) is an example of a value exceeding the set temperature iTs, and can be changed as appropriate depending on the S type.

Due to the above-described effects, according to this embodiment, when heating is started, either hot air heating or radiant heating can be selected by the operation selection switch 15, and when radiant heating is selected, the hands and feet are quickly heated by the radiant heat. It can be heated to. Furthermore, it is possible to provide gentle heating without any draft sensation (uncomfortable wind blowing against the body) or air blowing noise to the human body, making it ideal for use when going to bed at night.

In this embodiment, the case where the city unit 12 is of the floor-standing type has been described, but the VC 4 can be similarly applied even when the city unit 12 is of the wall-mounted type.

Furthermore, in this embodiment, the radiant heat exchanger 3 and the indoor heat exchanger 4 are connected in series through the conduit 8 so that the refrigerant flows in series, but the above two heat exchangers are connected in parallel. Also good.

〔Effect of the invention〕

As described above, according to the present invention, the operation selection means VC enables appropriate use of heating and radiant heating, and during radiant heating, the radiation control means that completely reduces the air blowing function of the indoor fan is provided. By providing this, the function of radiant heating can be fully utilized and comfort can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a refrigeration cycle in one embodiment of the present invention, FIG. 2 is a diagram showing the internal configuration of an indoor unit in the same embodiment, and FIG. 3 is a flowchart showing the operation of the same embodiment. Melt. 1...Compressor 3...Radiant heat exchanger 4...Indoor heat exchanger 5...Reduced pressure snow making 6...Outdoor heat exchanger
13... Indoor fan 15... Operation selection means 16.
...Radiation control means 24...Heat radiation panel representative 5P Seiji Nori Chika Noriyuki Yukio Yuda Figure 1 Figure 2

Claims (4)

[Claims] (1) A refrigeration cycle consisting of a compressor, a radiant heat exchanger, an indoor heat exchanger, a decompression device, and an outdoor heat exchanger connected in sequence, the above-mentioned indoor heat exchanger and an indoor fan, and a refrigeration cycle that is exposed indoors. An indoor unit having a heat radiant panel and the radiant heat exchanger attached to the heat radiant panel; an operation selection means for selecting a warm air heating operation or a radiant heating operation in a heating operation; An air conditioner characterized in that the air conditioner is equipped with a radiation control means that reduces the air blowing function of the indoor fan when the radiant heating operation is selected than when the hot air heating operation is performed. (2) The air conditioner according to claim 1, wherein the radiation control means for reducing the ventilation function of the indoor fan turns off the indoor fan. (3) The air conditioner according to claim 1, wherein the radiation control means for reducing the ventilation function of the indoor fan turns the indoor fan intermittently OFF and ON. (4) The air conditioner according to claim 1, wherein the radiation control means for reducing the air blowing function of the indoor fan is a weak operation of the indoor fan.