JPS60253754A - Controlling operation of heat pump type air conditioner - Google Patents

Abstract

PURPOSE:To avoid producing an uncomfortable feeling when starting a heating operation, by providing a high-temperature air blow-off operation mode in which the rotating frequency of a compressor is maintained to be high while that of a blower for a service-side heat exchanger is restricted, in addition to a normal operation mode. CONSTITUTION:A refrigerant circuit comprising the compressor 1, a four-way valve 2, the service-sideheat exchanger 4, a decompressor 5 and a heat source side heat exchanger 3 sequentially piped to each other is provided, and a variable-speed motor 6 for the compressor 1, a variable-speed blower 9 for the heat exchanger 4, a temperature sensor 14 for air taken into the air conditioner, a reference temperature setter 15 for the intake air, a temperature sensor 11 for blow-off air, and a reference temperature setter 12 for the blow-off air are provided. In the normal operation mode, the quantity of air blown is set to be large and constant, and only the rotating frequency of the compressor 1 is controlledly varied so that the temperature detected by the sensor 11 becomes equal to the reference temperature set by the setter 12. In the high- temperature air blow-off operation mode, the rotating frequency of the compressor 1 is set at the maximum, and the quantity of air blown by the blower 9 is controlled by a rotating frequency varying means 52 so that the blow-off air temperature detected by the sensor 14 becomes equal to a set point.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a heat pump type air conditioner, and particularly to control of a heat pump type air conditioner with good operating characteristics at the start of heating operation (heating start-up). It is about the method.

[Background of the invention]

A conventional operation control method will be explained with reference to FIG.

In the figure, 1 is a compressor, 2 is a four-way valve, 3 is a heat exchanger on the heat source side, 4 is a heat exchanger on the user side, 5 is a pressure reduction device, 6 is a motor for driving the compressor, and 7 is the rotation speed of this motor 6. 8 is a blower for the heat exchanger on the heat source side (including a motor for the blower); 9 is a blower for the heat exchanger on the user side (including a motor for the blower); 11 is air flowing into the heat exchanger on the user side. A sensor for detecting temperature; 12, a setting device for the reference temperature of the air flowing into the heat exchanger on the utilization side; 13, means for comparing the temperatures of 11 and 12; 17, based on the result of the comparing means 13, gives a command to the inverter 7; Shows the controller.

In the conventional technology with such a configuration, only the rotation speed of the compressor 6 is changed by the inverter 7 (in order to increase the efficiency of the air conditioning refrigeration cycle, the rotation speed of the user side blower is kept high and constant). ), a sensor 11 that detects the temperature of the air flowing into the user-side heat exchanger (hereinafter referred to as room temperature);
The control unit compares the set value from the setting device 12 and changes the amount of heat released or absorbed in the used gAll heat exchanger so that the room temperature becomes the set value, thereby creating a comfortable space in the room. Ta. However, in most areas of Japan, the heating load in winter is generally heavier than the cooling load in summer, so
For example, even if the above-mentioned control is performed so that the room temperature is at the set value when the heating operation starts, it will take time for the people in the room to start feeling comfortable; There was a problem with providing a sense of pleasure.

This is because the above-mentioned control method simply injects heat into the room to raise the room temperature, and takes into account the effects of the air flowing inside the room on the physical sensation and the effects of radiation from the walls. This is because they are not.

[Purpose of the invention]

The present invention was invented in view of the above, and an object of the present invention is to make the room comfortable even when the heating load is large, such as at the start of heating operation.

[Summary of the invention]

In order to achieve the above object, the present invention includes a refrigerant circuit in which a compressor, a four-way valve, a user-side heat exchanger, a pressure reducing device, and a heat source-side heat exchanger are sequentially connected via piping, a variable-speed compressor-side electric motor, and a variable-speed compressor-side electric motor. A user-side heat exchanger blower, a means for detecting the temperature of the air taken into the air conditioner, a means for setting a reference temperature of the intake air, a means for detecting the temperature of the blown air, and a means for setting the reference temperature of the blown air, There is a normal operation mode in which the compressor rotation speed is controlled so that the intake air temperature on the user side is at the set value, and a normal operation mode in which the compressor rotation speed is kept high so that the user side outlet air temperature is at the high temperature set value. It has a high-temperature air blowing operation mode for controlling the rotational speed of the blower of the U-side heat exchanger, and has the feature of switching between the two operation modes according to the indoor comfort condition.

[Embodiments of the invention]

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

FIG. 2 shows an embodiment of the invention. In the figure, 1 is a compressor, 2 is a four-way valve that reverses the refrigerant circuit, 3 is a heat exchanger on the heat source side, 4 is a heat exchanger on the user side, and 5 is an expansion valve. The above devices are connected by piping in sequence as shown in the diagram. A refrigerant circuit is formed. 6 is an electric motor for driving the compressor, 7 is an inverter that changes the rotation speed of the electric motor 6, 8 is an air blower for the heat exchanger on the heat source side (including the electric motor), 9 is an air blower for the heat exchanger on the user side (including the electric motor), and 10 is an electric motor for driving the compressor. A rotation speed variable device for the user-side blower; 11 is a sensor that detects the temperature of air flowing into the user-side heat exchanger;
12 is a setter for the reference temperature of this air, 13 is a sensor 11
and temperature comparison means for the temperature setting device 12; 14 is a sensor for detecting the temperature of the air blown into the room after passing through the user-side heat exchanger; 1;
5 is a setting device for the reference temperature of this air; 16 is a temperature comparison means for the sensor 14 and the temperature setting device 15; and 51 is a temperature comparison device 1.
A computing unit 52 performs judgment and calculation based on the comparison results of numbers 3 and 16;
and rotation speed changing means for giving a rotation speed change command to the inverter 7, and 53 indicates an operation mode switching means.

Next, a method of controlling the operation of the above device will be explained.

Since the present invention relates to improving comfort during heating, the operation during cooling operation will be omitted, and only the heating operation will be explained.

In the figure, the four-way valve 2 is switched to circulate the refrigerant during heating operation, and the refrigerant absorbs heat in the heat source side heat exchanger 3 and radiates heat in the usage side heat exchanger 4, thereby performing a heating effect. At this time, if the heating load is relatively small and the temperature of the walls that make up the air-conditioned space is not so low, as described in the prior art section, the amount of air blown from the heat exchanger on the user side is kept constant. A method is adopted in which the room temperature is adjusted by changing only the rotational speed of the compressor 1 and controlling the temperature detected by the sensor 11 to become the reference temperature of the setting device 12. Such an operation method will be referred to as a normal operation mode.

On the other hand, when the temperature of the walls forming the air-conditioned space is low, such as when heating operation starts in winter, even if heat is input into the room and the indoor air is warmed, it takes time for the temperature of the walls to rise. Because the walls are slanted, it takes time for occupants to feel warmth due to the effects of radiation from the wall surfaces, creating an uncomfortable situation. In such a case, from the viewpoint of comfort, it is necessary to keep the temperature of the air that passes through the user-side heat exchanger 4 and blows into the room sufficiently high. This situation will be explained using the comfort diagram in FIG. Figure 3 shows the radiant temperature Tw of the wall.

It shows the room temperature Tai and the comfort line AB where the occupants feel comfortable. C above line AB indicates an area where the occupants feel warm or hot. Further, D below line AB indicates an area where the occupants feel cool or cold. From this figure, when the wall temperature Tw is high, the room temperature Tai can be relatively low, but when the wall temperature is low, the room temperature Tai 'c is high, that is, it is necessary to increase the temperature of the air blown from the air conditioner. I understand that.

In this embodiment, in addition to the conventional normal operation mode during heating operation, a high temperature air blowing operation mode in which high temperature air can be blown is provided, and these operation modes can be selectively switched by the switching means 53. .

Hereinafter, a specific example of the high-temperature air blowing operation mode will be described, and this embodiment will be explained in further detail.

FIG. 4 is a flowchart showing the operation of the first embodiment using the air conditioner having the configuration shown in FIG.

When the operation is started, it is determined whether the operation mode of the switching means 53 is set to the high temperature air blowing operation mode (hereinafter referred to as A mode) or the normal operation mode (hereinafter referred to as B mode). be exposed.

If the A mode is set, the computer 51 sets the compressor rotation speed to the maximum value, and also performs all determinations to determine whether the blow-out air temperature detected by the detector 14 has reached the set value, and then sets the compressor rotation speed to the maximum value. If the value has not been reached, the rotation speed of the blower 9 is lowered, and if the set value has been reached, the rotation speed of the blower 9 is increased, and the rotation speed is varied so that the blowing air reaches the set value. Means 62 controls the amount of air blown. On the other hand, if the p operation mode is set to B mode by the switching means 53, the fan rotation speed is fixed at the maximum value and the temperature detected by the room temperature sensor 11 is set to the value by the setting device 12. The compressor rotation speed is controlled by the computing unit 51 and the rotation speed variable means 52 so that the rotation speed of the compressor is satisfied. In order to further explain the specific operation of this embodiment with reference to FIG. 5, FIG. 5 will first be explained.

In Fig. 5, the X axis represents the rotation speed N of the compressor, the Y axis represents the time axis, the Z axis represents the outlet air temperature Ta (1,0 parts), the heating capacity Q11 (1,0 parts), the room temperature Tai and the wall Temperature Twtl - represents the heating characteristics of the air conditioner installed in a specific building using the air volume by the user-side heat exchanger blower as a parameter, and Val, va2 in the figure.

On the va5 side, the air volume is constant (Va5>Va2>V
The characteristics of case al) are shown. For example, if the air volume is V
When the rotation speed of the compressor is increased with an air volume corresponding to the al surface, the air conditioner characteristics are shown by a line represented by 6-+ b, where the part ■ represents the outlet air temperature Tao-, and the part ■ represents the heating capacity Qh. Ru. Also, when the compressor rotation speed is constant N and the air volume is constant, looking at the changes along the time axis, a-+p, b-+
Tao increases like q, and Qh decreases. This is because the air temperature in a particular building increases as the heating operation is performed, and FIG. 5 shows the actual changes in the operating situation.

In this embodiment, FIG. 5 shows a situation in which the A mode operation is performed at the same time as heating starts, and the situation is switched to the B mode operation at time t1. First, at the same time as the start of operation, the rotation speed of the compressor is maximized and the air volume is reduced (a→b). Next, while maintaining the rotational speed of the compressor, the air volume is fully controlled in order to maintain Taot-set value Tao1 (b-+c). B at time t1
A transition is made to mode operation, and the blow-out air temperature control is switched to room temperature control (c-+ d-+ 6
). In B mode operation, the air volume is maximized and the rotation speed of the compressor is fully controlled (e→f). At this time, room temperature Ta1, wall temperature T
The time change of w is shown in part 0. As shown in part 0, the capacity Qll during A mode operation is lowering the air volume, so the capacity at the maximum air volume of the device is somewhat smaller, but this means that the air is discharged without heating the entire air-conditioned space. This problem can be solved by reducing the total heating load by changing the air outflow direction to perform heating locally.

As explained above, according to this embodiment, high-temperature air is blown out while the wall temperature Tw is low and the heating load is large, and when the wall temperature is high and the heating load is small, the room temperature Since the control operation can be performed selectively, it is possible to create a comfortable air-conditioned environment for the occupants.

FIG. 6 is a block diagram showing another embodiment of the present invention. This embodiment differs from the embodiment shown in FIG.
It is equipped with a timer 51g inside. Since the other parts are the same as those in the embodiment shown in FIG. 2, the same reference numerals are given and the explanation thereof will be omitted.

FIG. 7 shows the operation of the embodiment of FIG. 6 in a flowchart. In this embodiment, two set temperatures are provided as the standard set temperature for the blowing air temperature during A mode operation, and the timer 51
These set temperatures are switched by a to improve operating efficiency. The B-mode operation is the same as the operation of the embodiment of FIG. 2 shown in FIG. 4, so a description thereof will be omitted.

When the switching means 53 detects that the operation mode is set to the A mode operation, the calculator 51 sets the rotation speed of the compressor to the maximum value, and the temperature detected by the detector 14 is first set to The temperature is compared with the first reference set temperature by the setting device 15, and the rotational speed variable means 52 controls the amount of air blown so that the first set temperature is reached. A
When the timer 51a detects that the time set by the timer 51a has elapsed after the start of the mode operation, the detected temperature of the blown air by the detector 14 is compared with the second set temperature by the setting device 15, and the blower is controlled.

FIG. 8 shows the operation of this embodiment, and shows an example in which the A (A1, A2) mode operation is performed from the start of the heating operation until time t2, and the B mode operation thereafter. . Simultaneously with the start of heating, the compressor is set to the maximum rotation speed, and the blown air temperature T&0 is controlled to the first set temperature Ta01 by changing the rotation speed of the blower (&-4b-
4pc). Next, a timer 5 built into the arithmetic unit 51
1&, the elapsed time t1 from the start of the A mode operation is detected, and the set temperature of the blown air temperature is changed to the second set temperature TaO2 (c-+d). After time t2, similar to the operation of the embodiment of FIG. 2 shown in FIG. 5, the control shifts from the blown air temperature to the room temperature control, the blower rotation speed is increased, and the compressor rotation speed is changed ( e-+f-+g-
+ h).

- Time changes in room temperature Tal and wall temperature Tw at this time are shown in part 0.

As explained above, in this embodiment as well, high-temperature air operation is performed when the heating load is large, and operation to control the room temperature can be performed selectively when the heating load becomes relatively small. It can create a comfortable state for people.

In the case of this embodiment, as shown in an example of operation in Fig. 8, the air volume can be increased by operating with the blowout temperature set relatively low for a short time after the start of A mode operation, so the refrigeration cycle In addition to the overall efficiency, the refrigerant circuit also has the effect of quickly bringing the refrigerant circuit to the normal operating temperature at startup.

FIG. 9 shows the operation of yet another embodiment in a flowchart. The equipment configuration of the air conditioner of this embodiment is the same as that of the embodiment shown in FIG. 2, so illustration and explanation thereof will be omitted.

In this embodiment, like the embodiment shown in FIG. 2, there is only one reference temperature setting for the blown air during A-mode operation;
The difference is that both the rotation speed of the compressor and the rotation speed of the blower are changed during A-mode operation. The operation of the B-mode operation is the same as the operation of the embodiment of FIG. 2 shown in FIG. 4, so a description thereof will be omitted. In Figure 9,
When the operating mode is switched to A mode operation by the switching means 53 in FIG. A selection is made as to whether to change the rotation speed of the compressor or the rotation speed of the compressor.
2, the blower or compressor is controlled.

FIG. 10 shows the operation of this embodiment, and shows the operating situation when the human mode operation is selected after the start of the heating operation and the mode shifts to the B mode operation at time t1. Here, at the same time as the start of operation, the rotation speed of the compressor is set to the maximum and the rotation speed of the blower is set to the minimum (a-+l)).Then, the rotation speeds of the blower and compressor are changed, and the blowing air temperature 'f , T.I.
An operation is performed to maintain the level at L01. This embodiment also has the same effect as the embodiment shown in FIG. 2, that is, when the heating load is large, it is possible to create a comfortable condition for the occupants.

Although each of the embodiments described above is an example in which the means for switching between the A mode operation and the B mode operation is manual, this switching may be performed automatically by detecting the air conditioning load. Hereinafter, a control method of an embodiment in which switching is performed fully automatically will be explained.

FIG. 11 shows the equipment configuration of an air conditioner according to an embodiment in which switching is performed automatically, and FIG. 12 shows the operation of this embodiment in a flowchart. In FIG. 11, 17 is wall temperature detection means;
Reference numeral 19 denotes the detection means 17, which is a means for comparing the detected temperature with a set wall temperature, which will be described later. The wall temperature is a value detected by a temperature sensor attached to the wall surface, for example, 4i1f.
It is good to consider the average value of the detected temperature on the wall surface of 1. Since the other parts are the same as the equipment configuration of the embodiment shown in FIG. 2, the same reference numerals are given and the explanation thereof will be omitted.

The operation of this embodiment will be explained below.

When the arithmetic unit 51 detects that the air conditioner has started, it first sets a start-up motion flag at startup, then the room temperature detection means 11 detects the room temperature Tal, and the wall temperature detection means 17 detects the wall temperature. Detect Tw. The computing unit 51 stores a comfort diagram as shown in FIG. 3, and the comfortable wall temperature Two is given by the following equation.

TWO= f (Tal) The comparing means 19 compares the heart with Two, and when Tw (TwO), the computing unit 51 sets the A mode operation. The top-up operation flag is canceled and B-mode operation is set.During operation, if the startup-up operation flag at startup is set, the wall temperature Tw is detected, and the same operation is performed thereafter.Start-up at startup After the B mode operation flag is resolved, B mode operation is set.

According to this embodiment, it is possible to most ideally determine whether or not the room is in a comfortable state, and then switch the driving mode.

FIG. 13 shows the configuration of an air conditioner which is another embodiment of the automatic mode switching method, and FIG. 14 shows its operation in a flowchart. In the equipment configuration shown in FIG. 13, 18 is a reference temperature setting device for wall temperature. The other parts are the same as those in the embodiment shown in FIG. 11 and are given the same reference numerals and the explanation thereof will be omitted. That is, this embodiment differs from the embodiment shown in FIG. 11 in that the operation mode is switched based on the set wall temperature.

The operation of this embodiment will be explained below.

When the computing unit 51 detects that the air conditioner has started, it first sets a start-up operation flag at the time of startup, and then the wall temperature detection means 17 detects the wall temperature Twi. - The p reference wall temperature Tw' is set by the universal ruler 18. T in comparison means 19
w and Tw' are compared, and when Tw (Tw', the arithmetic unit 51
sets A mode operation. Tw) When T'w', the arithmetic unit 51 cancels the start-up p operation flag at the time of startup and also sets all B mode operation. During operation, if the start-up operation flag at startup is set, the wall temperature Tw is detected, and the same operation is performed thereafter. After the start-up operation flag at startup is cleared, B-mode operation is set.

According to this embodiment, the operating mode can be switched in a simpler manner than in the embodiment shown in FIG.

FIG. 15 shows the configuration of an air conditioner which is still another embodiment of the automatic mode switching method, and FIG. 16 shows its operation in the form of a flowchart. This embodiment differs from the embodiment shown in FIG. 11 in that the mode switching method is based on the set value of the room temperature. The operation of this embodiment will be explained below.

When the computing unit 51 detects that the welfare air conditioner has started, it first sets a start-up operation flag at the time of startup, and then the room temperature detection means 11 detects the room temperature Tai. On the other hand, the reference room temperature setting device 12 is set to a room temperature Tai'. Comparison means 13 compares Tai and Tai' and calculates T&i(T a
When i', the computing unit 51 sets the A mode operation.

When Ta1)Tai', the computing unit 51 cancels the start-up operation flag at the time of startup and sets the B-mode operation.

During operation, if the start-up operation flag at startup is set, the same operation will be performed after the detection of room temperature Tai.

After the start-up operation flag at startup is cleared, B-mode operation is set.

According to this embodiment, the operating mode can be switched by using the room temperature detection means that is already provided in conventional air conditioner control.

FIG. 17 shows the configuration of an air conditioner which is still another embodiment of the automatic mode switching method, and FIG. 18 shows its operation in a flowchart. In FIG. 17, 53 is a switching means, and 53a is a timer. This embodiment differs from the embodiment shown in FIG. 11 in that the mode switching method is performed using a timer. The operation of this embodiment will be explained below.

When the computing unit 51 detects that the air conditioner has started, it sets a start-up operation flag at the time of startup and also starts a timer 53a in which a time has been set in advance. Next, the timer 53a f counts and it is determined whether the set time has elapsed or not, and if the set time has not elapsed yet, the arithmetic unit 51 sets the A mode operation. Thereafter, during operation, if the start-up operation flag at startup is set, the same operation will be performed after the count of the timer 53&. When it is determined by the timer count that the set time has elapsed, the arithmetic unit 51 cancels the start-up operation flag at startup and sets the B-mode operation.

During subsequent operation, the B-mode operation is set because the start-up operation flag at startup is cleared.

In this embodiment, since the switching means is a timer, stable operation can be achieved with a simple circuit.

Although not shown as another example of the equipment configuration of the air conditioner, an electric heater is installed in parallel with the heat exchanger on the user side, and during the high temperature air blowing operation mode, the compressor and the fan on the user side are connected. If the blown air temperature still does not reach the set value even after controlling the rotation speed, the electric heater may be energized to obtain the set blown air temperature.

〔Effect of the invention〕

As explained above, according to the present invention, during heating operation, when the room temperature and wall temperature are low and the heating load is large, the temperature of the air blown into the room from the air conditioner is controlled to a high set temperature, and When the heating load is relatively small, by controlling the room temperature to a set temperature, it is possible to create a comfortable situation for the occupants.

Moreover, it has the effect that it becomes possible to use a heat pump device for air conditioning and heating even in cold regions where it has been difficult to apply it in the past.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a conventional refrigerant circuit and control device, and FIG. 2 is a configuration diagram of a refrigerant circuit and control device showing an embodiment of the present invention.
Fig. 3 is a correlation diagram of comfort between room temperature and wall temperature, Fig. 4 is a flowchart showing the control method of the embodiment shown in Fig. 2, and Fig. 5 shows a control pattern using the control method shown in Fig. 4. Characteristic diagram shown,
Fig. 6 is a block diagram of a refrigerant circuit and a control device showing another embodiment, Fig. 7 is a flowchart showing a control method of the embodiment of Fig. 6, and Fig. 8 is a control pattern according to the control method of Fig. 7. FIG. 9 is a flowchart of a control method showing another embodiment, FIG. 10 is a characteristic diagram showing a control pattern according to the control method of FIG. 9, and FIG. The configuration diagram of the refrigerant circuit and control device shown in Fig. 1 is
Flowchart diagram showing the control method of the embodiment shown in FIG.
3 is a configuration diagram of a refrigerant circuit and a control device showing still another embodiment, FIG. 14 is a flowchart showing the control direction of the embodiment of FIG. 13, and FIG. 15 is a refrigerant circuit showing still another embodiment. 16 is a flowchart showing the control method of the embodiment shown in FIG. 15, FIG. 17 is a block diagram of the refrigerant circuit and control device showing another embodiment, and FIG. FIG. 18 is a flowchart showing the control method of the embodiment shown in FIG. 17; DESCRIPTION OF SYMBOLS 1... Compressor, 2... Four-way valve, 3... Heat source side heat exchanger, 4... User side heat exchanger, 5... Pressure reduction device, 6
... Compressor motor, 7... Inverter, 8...
Heat source side heat exchanger blower, 9... Usage side heat exchanger blower, 10... Rotation speed variable device, 11... Temperature sensor, 12... Reference temperature setter, 13... Comparison means,
14...Temperature sensor, 15...Reference temperature setter, 1
6... Comparison means, 17... Controller, 18... Reference temperature setter, 19... Comparison means, 51... Arithmetic unit,
51m...timer, 52...rotation speed changing means, 5
3...Switching means, 53a...Timer. Representative Patent Attorney Tadashi Akimoto Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 52 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Continued from page 1 0 Author: Akira Atsumi @ Inventor Kuhei Ishibane @ Inventor Hiroshi Kogure @ Inventor Temple 1) Hirosei 50 Asaji, Kandate-cho, Tsuchiura-shi Stocks Hitachi, Ltd. Machinery Research Laboratory 80 Hata, Tomita, Ohira-cho, Shimoga-gun, Tochigi Prefecture Inside Tochigi Factory, Hitachi, Ltd.

Claims (1)

[Claims] 13. A refrigerant circuit in which a compressor, a four-way valve, a heat exchanger on the user side, a decompression device, and a heat exchanger on the heat source side are sequentially connected via piping, a variable speed electric motor for the compressor, and a variable speed heat exchanger on the user side. A blower for an exchanger, a means for detecting the temperature of the air taken into the air conditioner, a means for setting a reference temperature of the intake air, a means for detecting the temperature of the blown air, and a means for setting the reference temperature of the blown air,
The normal operation mode controls the compressor rotation speed so that the intake air temperature on the user side reaches the set value, and the normal operation mode controls the compressor rotation speed so that the user side outlet air temperature reaches the high temperature set value. It has a high-temperature air blowing operation mode that controls the rotation speed of the fan of the heat exchanger on the user side, depending on the indoor comfort condition.
A method for controlling the operation of a heat pump air conditioner, characterized by switching between the two operation modes described above. 2. The method for switching the operating mode detects the comfortable state of the room, and if it is not comfortable, it will automatically select the high temperature air blowing operating mode, and if it is comfortable, it will automatically select the normal operating mode. Claim 1 that makes the switch
A method for controlling the operation of a heat pump type air conditioner as described in . 3. The method of switching the operation mode is to calculate the relationship between the wall temperature two, which represents the comfortable state of the room, and the room temperature tal using the following equation (1), and calculate the relationship between the detected wall temperature tw and the room temperature. tal
The heat pump type air conditioner according to claim 2, wherein when tw (twO) is satisfied, high temperature air blowing operation is performed, and when tw≧two is satisfied, the operation mode is switched to normal operation. Operation control method. 4. The heat pump according to claim 2, wherein the method for switching the operation mode detects wall temperature and compares the detected temperature with a reference temperature of the wall temperature to switch the operation mode. 5. A method for controlling the operation of a type air conditioner. 5. The method of switching the operation mode detects the room temperature and compares the detected temperature with a reference temperature of the room to switch the operation mode. The method for controlling the operation of a heat pump air conditioner according to claim 2. 6. The heat pump air conditioner according to claim 1 or 2, wherein the method for switching the operation mode is using a timer. 7. The high-temperature air blowing operation is provided with a means for setting the first and second reference temperatures of the blown air, and the rotation speed of the compressor motor is kept high, and after the high-temperature air blowing operation starts. , the scope of the claim is to control the rotational speed of the blower of the user-side heat exchanger so that the blown air reaches a first reference temperature for an appropriate period of time, and so that the blown air reaches a second reference temperature after an appropriate period of time. The method for controlling the operation of a heat pump air conditioner according to any one of paragraphs 1 to 6. 8. Immediately after the start of high temperature air blowing operation, the rotation speed of the compressor electric motor is adjusted to the maximum speed on the user side. A patent claim in which the rotational speed of a blower of a heat exchanger is made small, and thereafter the rotational speed of the blower and the rotational speed of a compressor electric motor are alternately increased and decreased, respectively, so that the temperature of the blown air is controlled to be the reference temperature. range 1
The method for controlling the operation of a heat pump air conditioner according to any one of items 6 to 6. 9. An electric heater is provided in parallel with the heat exchanger on the user side, and the electric heater is activated when the temperature of the blown air does not reach the reference temperature during high-temperature air blowing operation. The method for controlling the operation of a heat pump air conditioner according to any one of the above.