JPS6277537A - Air conditioner - Google Patents

Abstract

PURPOSE:To correct a difference in the temperature felt by one's body between space cooling in summer season and space heating in winter season to improve comfortableness in air conditioning by using in combination an indoor temperature sensor for detecting a room temperature and a radiation temperature sensor for detecting the indoor radiation temperature, in the air conditioner provided with a heat pump type refrigerating cycle. CONSTITUTION:The air conditioner comprises an indoor temperature sensor 6 for detecting the room temperature; a radiation temperature sensor 7 for detecting the indoor radiation temperature; temperature setting means 8 for setting a target temperature; and a computer control circuit 9 for correcting the target temperature of temperature setting means 8 based on the temperatures detected by both temperature sensors 6 and 7 and also correcting a difference in the temperature felt by one's body between space cooling in winter season and space heating in summer season. Therefore, at both space heating and cooling times not only the difference in bodily temperature caused by radiation heat temp. can be eliminated but also, even when an indoor temperature varies, improvement in comfortableness of air conditioning can be achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an air conditioner that controls cooling and heating operations in consideration of the difference in perceived temperature due to indoor radiant heat between summer and winter.

[Technical background of the invention and its problems]

As shown in Figure 5, conventional air conditioners equipped with a heat pump type refrigeration cycle are controlled by taking into account the temperature of radiant heat from the walls and floor of the room (air-conditioned space). There is.

That is, in the conventional air conditioner, in FIG. 5, a room temperature sensor that detects the room temperature and a radiant temperature sensor C that detects radiant heat from the walls, floor, etc. of the room are installed in the control circuit a and /J section. A compressor d comprising an inverter constituting a refrigeration cycle I is connected to the output section of the control circuit a, and a temperature setting means e is further attached to the control circuit a.

Therefore, the air conditioner described above compares the temperature difference between the indoor temperature sensor-b and the radiant temperature sensor 1-C using the control circuit a, and as this temperature difference increases, the operating capacity of the compression lid is increased. It is supposed to be raised.

On the other hand, as the temperature difference becomes smaller, the operating capacity of compressor d is increased, the capacity of compressor d is varied, and this i1! The degree difference is 4g input from the temperature setting means e above.
It is designed to correct the 4th degree.

However, in the temperature control of the air conditioner described above, since the radiant temperature is less likely to change than the room temperature, a comfortable air conditioner cannot be smoothly provided.

That is, for example, when a defrosting operation occurs during heating, or when ventilation is suddenly opened by opening the window, the indoor temperature will fluctuate greatly due to the effects of ventilation, etc., and it will feel colder, but the radiant heat temperature will be Because the heat capacity from the walls and floor is large, the temperature change is smaller than the indoor temperature, and because of this, control circuit a mistakenly judges this as a relatively high radiant heat temperature and turns the compressor off. There is a risk that the operation of the vehicle may be controlled. In other words, even if the indoor temperature fluctuates significantly at the start of defrosting operation or after opening a window for ventilation, the difference of 4 degrees will be small.
As a result, even though the room temperature actually falls and it feels colder, the user mistakenly assumes that the radiant heat temperature has risen and lowers the target temperature.

On the other hand, the temperature control of the air conditioner described above is performed under the same conditions during both cooling and heating.

In other words, due to the difference in the amount of clothing worn in summer and winter, even if the temperature changes within the same width, the perceived temperature difference will be different.

In other words, a single rise in room temperature feels like a larger temperature rise in the summer than in the winter. Therefore, when correcting the target room temperature according to the radiant temperature, if the same correction control is used during cooling and heating, the result will not match the user's experience, causing a difference in the user's experience and impairing the comfort of air conditioning. . In other words, when the target temperature is increased once during cooling, for example, a difference in the sense of being too hot occurs.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and aims to improve the comfort of air conditioning by eliminating the difference in sensation caused by the radiant heat temperature during cooling and heating in summer and winter. The objective is to provide an air conditioner.

[Summary of the invention]

The present invention provides an air conditioner equipped with a heat pump type refrigeration cycle, including an indoor temperature sensor that detects room temperature;
A radiant temperature sensor detects indoor radiant temperature, a temperature setting means sets a target temperature, and the target temperature of the temperature setting means is corrected based on the temperature detected by both the humidity sensors. Equipped with a control circuit that corrects the difference in perceived temperature, it eliminates the difference in perceived temperature caused by radiant heat temperature, even when the indoor temperature fluctuates.
It is designed to improve the comfort of air conditioning.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In FIGS. 1 to 3, reference numeral 1 denotes 1 whose capacity can be converted to an air conditioner equipped with a heat pump type refrigeration cycle. [This is a compressor equipped with an inverter, and when the compressor 1 is driven during cooling, the high temperature and high pressure refrigerant of the compressor 1 passes through the four-way valve 2 in the direction indicated by the solid line in FIG. 1 and passes through the outdoor fan 3a. The refrigerant undergoes heat exchange and liquefies by the outdoor heat exchanger 3, which is cooled by the refrigerant.Furthermore, this refrigerant is depressurized by passing through the pressure reducing device 4, and then transferred to the all internal heat exchanger where the heat is exchanged by the indoor fan 5a. 5 to exchange heat and cool the room. On the other hand, the refrigerant that has completed its work returns to the compressor 11 through the four-way valve 2.

On the other hand, by switching the four-way valve 2 in advance during heating,
When the compressor n1 is driven, the refrigerant in the compressor 1 passes through the four-way valve 2 and exchanges heat with the indoor heat exchanger 5 in the direction indicated by the dotted line in FIG. 1, thereby heating the room. On the other hand, the refrigerant that has completed its work is depressurized through the pressure reducing device 4, and then vaporized in the outdoor heat exchanger 3, where heat is exchanged with the outdoor fan 3a, and this refrigerant is passed through the four-way valve 2 to the compressor 1. Reflux J: The sea urchin is turning.

On the other hand, in the room as an air-conditioned space, an indoor temperature sensor 9-6 that detects the room temperature and a radiant temperature sensor (radiant heat temperature sensor "-") 7 that detects the radiant temperature of the walls and floors of the room are arranged. Both temperature sensors 6.7 are connected to the input section of a control circuit 9 to which is connected a temperature setting means (controller) 8 for selecting cooling/heating and setting a target temperature.

In particular, this control circuit 9 is constituted by a computer, and the output section of this control circuit 9 is connected to the compression ta1 provided with the above-mentioned inverter.

Further, this control circuit 9 corrects the target temperature of the temperature setting means 8 using the temperature detected by the indoor St* sensor and the radiant temperature sensor 7, and also adjusts the humidity based on the sense of humidity that occurs during cooling and heating in winter and summer. The difference can be corrected.

In this way, the target temperature 8 set by the temperature setting means 8 (see Figs. 2 and 3), the indoor temperature T^ and radial detected by the indoor temperature sensor 6, and the temperature detected by the temperature sensor 7. The radiant temperatures TR thus obtained can be respectively input to the control circuit 9.

Further, the control circuit 9 issues a command to vary the output of the compressor 1 according to the difference between the input degrees T8 and 1211 degrees indoors. At the same time, the control circuit 9 has a goal of providing comfort. ! i! Di
The difference between T5 and the radiation temperature TR is input as a constant value ΔT1. When the difference is greater than or equal to the certain value 611, the initial target temperature Ts that has been lowered earlier is shifted up (+α), and when the difference is less than the above certain value Δ11. , the initial target temperature T8 input earlier
The setting is made to shift down (-α). Moreover, the control circuit 9 controls the initial opening eI! according to the difference in the constant value ΔT1! It is possible to output a command to correct the temperature T8) and cause the indoor temperature 2 to reach the corrected temperature T.

Furthermore, the control circuit 9 lowers the target temperature T8 when the indoor radiant heat is high (in the summer), and increases the target temperature T8 when the indoor radiant heat is low (in the winter), thereby controlling the air conditioning in the winter and summer. Corrects (corrects) the temperature difference caused by the sensation of temperature between
11.

Next, the operation of the air conditioner configured as described above will be explained with reference to the flowchart in FIG. 2 and the temperature difference correction control graph for cooling and heating in FIG. 3.

During the heating operation, in the flowchart of FIG. 2, the temperature setting means 8 sets the 111 room operation and also sets the target temperature T, and then performs the operation start operation. As a result, the set initial target temperature T8 is adjusted to the control circuit 9.
is recognized and memorized by

On the other hand, the four-way valve 2 switches to the heating side, and the control circuit 9
detects the difference between the initial target temperature T8 and the indoor temperature TA detected by the room temperature sensor 67F, and according to the temperature difference,
The rotation speed of the compression Ia1 and the indoor and outdoor fans 3a and 5a
The rotation speed is controlled to determine the capacity according to the load. Thereby, a heating cycle according to the load is operated.

In this way, the indoor temperature TA and the convergence rJJ due to the walls and floor surface increase by 1 degree due to the operation of the @space cycle.

Therefore, the radiation temperature sensor 7 of the radiation 9A measures the radiation temperature T1, and the control circuit 9 calculates the temperature at the radiation temperature TR as shown in the graph during heating in FIG. At the same time, the temperature difference (T8-TR) between the target temperature Ts and the radiant temperature TR is calculated and corrected so that this rising or falling temperature becomes the corrected target temperature T8', thereby controlling the indoor temperature TA. The temperature is controlled so that the correction target 111Ts' is achieved.

On the other hand, in the cooling operation, the temperature is controlled so that the indoor temperature TA becomes the corrected temperature T8' as shown in the graphs of 70 nits shown in the right column of Fig. 2 and the cooling time of Fig. 3. be done.

In this way, the control circuit 9 lowers the target temperature T to the corrected target temperature T8' to match the perceived humidity when the indoor radiant heat is high, and corrects the target temperature T8 when the indoor radiant heat is low. Raise the target temperature to T8'! IJII1. L,
This allows for correction control of the perceived temperature difference that occurs between cooling and heating.

Therefore, for example, when the target temperature TS is increased by 1 degree Celsius during cooling, the control circuit 9 according to the present invention adjusts the target temperature (J! !
Control the A temperature to T8' to eliminate the temperature difference due to bodily sensation,
The aim is to improve the comfort of air conditioning.

Next, another embodiment of the present invention shown in FIG.
II control path 9 is provided, and an indoor temperature sensor 6 and a radiation temperature sensor 7 are arranged near this control circuit 9, thereby reducing the heat energy that is fired by the control circuit 9 itself.
Both humidity sensors 6 and 7 are configured to accurately detect indoor temperature and radiant temperature.

〔Effect of the invention〕

As described above, according to the present invention, in an air conditioner equipped with a heat pump type refrigeration cycle, the indoor humidity sensor 6 that detects the room temperature, the radiant temperature sensor 7 that detects the indoor radiant humidity, and the radiant temperature sensor 7 that detects the target temperature. The temperature setting means 8 to be set and both of the above I! The temperature setting means 8 sets the temperature a! at the temperature detected by the smallpox sensors 6 and 7! It is equipped with a control circuit 1 that corrects the temperature and also corrects the difference in perceived temperature caused by cooling and heating in winter and summer, so that the perceived temperature caused by the radiant heat temperature is corrected both during cooling and when in a room. Not only can the difference be eliminated, but even when the indoor temperature fluctuates, the comfort of air conditioning can be improved.

[Brief Description of the Drawings] Fig. 1 is a diagram of an air conditioner according to the present invention, and Fig. 2 is a diagram of an air conditioner according to the present invention.
Flowchart diagram according to the present invention, FIG. 3 is a graph showing temperature difference correction control for cooling and heating according to the present invention, and FIG.
FIG. 5, which shows another practical example of the present invention, is a diagram of a conventional air conditioner. DESCRIPTION OF SYMBOLS 1... Compressor, 3... Outdoor heat exchanger, 4... Pressure reduction device, 5... Indoor heat exchanger, 6... Indoor temperature sensor, 7... Radiation temperature sensor, 8... ...Temperature setting means, 9...Luri control circuit. Applicant Representative Sato - Yu Heating/Cooling Figure 3

Claims (1)

[Claims] 1. In an air conditioner equipped with a heat pump type refrigeration cycle, an indoor temperature sensor that detects room temperature, a radiant temperature sensor that detects indoor radiant temperature, and temperature setting means that sets a target temperature. and a control circuit that corrects the target temperature of the temperature setting means based on the temperatures detected by both temperature sensors, and also corrects the perceived temperature difference between cooling and heating in winter and summer. Machine. 2. The air conditioner according to claim 1, wherein the indoor temperature sensor and the radiant temperature sensor are arranged near the control circuit.