JPH05280795A - Air conditioner - Google Patents

Abstract

PURPOSE:To obtain desired cool feeling by detecting temperature of the air to be supplied to an outdoor side heat exchanger and controlling a blast volume of an outdoor side blower based on its detected output. CONSTITUTION:An atmospheric temperature detector detects atmospheric temperature to be supplied to an outdoor side heat exchanger, and a controller 45 controls a blast volume of an outdoor side blower based on an output of temperature detecting means. That is, if temperature of the air to be supplied to the heat exchanger is high, the air volume of the blower is increased. If temperature of the air to be supplied to the heat exchanger is low, the blast volume of the blower is reduced. Cooling efficiency of the heat exchanger is so controlled as to be substantially the same, and a room side heat exchanger is maintained in a predetermined temperature range. Thus, desired cool feeling is imparted to a user irrespective of change in the atmospheric temperature.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an air conditioner having a compressor, an indoor heat exchanger, an outdoor heat exchanger and the like.

[0002]

2. Description of the Related Art Conventionally, in this type of air conditioner, the air cooled by the indoor heat exchanger is blown toward the user by the indoor blower, but it is supplied to the outdoor heat exchanger. Since the amount of air blown by the outdoor blower is constant regardless of the temperature of the air being blown, when the temperature of the air supplied to the outdoor heat exchanger rises, the outdoor heat exchanger is cooled sufficiently. However, there is a drawback that the temperature of the indoor heat exchanger rises and sufficient cold air cannot be supplied.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide an air conditioner capable of giving a desired cool feeling to a user regardless of a change in temperature.

[0004]

The first means of the present invention is to:
A temperature detecting means for detecting the temperature of the air supplied to the outdoor heat exchanger is provided, and a control circuit for controlling the air flow rate of the outdoor blower based on the output of the temperature detecting means is provided.

The second means of the present invention is provided with a first temperature detecting means for detecting the temperature of the indoor heat exchanger and a second temperature detecting means for detecting the temperature of the air supplied to the outdoor heat exchanger. At the same time, a control circuit for controlling the amount of air blown by the outdoor blower based on the output of the first temperature detecting means and the output of the second temperature detecting means is provided.

A third means of the present invention is provided with a first temperature detecting means for detecting a room temperature and a second temperature detecting means for detecting a temperature of air supplied to the outdoor heat exchanger, and at the same time, a first temperature detecting means. It is characterized in that a control circuit is provided for controlling the blow rate of the indoor blower based on the output of the means, and for controlling the blow rate of the outdoor blower based on the output of the second temperature detecting means.

A fourth means of the present invention is to provide temperature detecting means for detecting the temperature of the air supplied to the outdoor heat exchanger, and to use the outdoor side based on the output of the temperature detecting means and the air flow rate of the indoor blower. It is characterized in that a control circuit for controlling the amount of air blown by the blower is provided.

[0008]

According to the first aspect of the present invention, when the temperature of the air supplied to the outdoor heat exchanger is high, the amount of air blown by the outdoor blower is increased and the air is supplied to the outdoor heat exchanger. When the temperature of the generated air is low, the amount of air blown by the outdoor blower is reduced, and the cooling efficiency of the outdoor heat exchanger becomes approximately the same regardless of the temperature of the air supplied to the outdoor heat exchanger. Control is performed to maintain the indoor heat exchanger within a predetermined temperature range.

According to the second aspect of the present invention, the amount of air blown by the outdoor blower is controlled according to the temperature of the air supplied to the outdoor heat exchanger, and the cooling efficiency of the outdoor heat exchanger is substantially the same. The indoor side heat exchanger is maintained within a predetermined temperature range by controlling so that Also, according to the temperature of the indoor heat exchanger, that is,
When the temperature of the indoor heat exchanger is high, that is when the room temperature is high, and it is not possible to blow air that has been sufficiently cooled, so the amount of air blown is increased to give the user a cool sensation and When the temperature of the heat exchanger is low, the amount of air blown by the indoor blower is increased in order to prevent frost and ice from adhering to the indoor heat exchanger.

According to the third means of the present invention, the amount of air blown by the outdoor blower is controlled according to the temperature of the air supplied to the outdoor heat exchanger, and the cooling efficiency of the outdoor heat exchanger is substantially the same. The indoor side heat exchanger is maintained within a predetermined temperature range by controlling so that In addition, depending on the room temperature, that is, when the room temperature is high, it is not possible to blow sufficiently cooled air, so the amount of blown air is increased to give the user a cool feeling,
When the room temperature is low, the amount of air blown by the indoor blower is increased in order to prevent frost and ice from adhering to the indoor heat exchanger.

According to the fourth means of the present invention, the blowing rate of the outdoor blower is controlled according to the temperature of the air supplied to the outdoor heat exchanger, and the cooling efficiency of the outdoor heat exchanger is substantially the same. The indoor side heat exchanger is maintained within a predetermined temperature range by controlling so that In addition, since the temperature of the indoor heat exchanger changes according to the amount of air blown by the indoor blower, the amount of air blown by the outdoor blower is increased or decreased according to the amount of air blown by the indoor blower, and the indoor heat exchanger is set to a predetermined temperature. Keep in temperature range.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS.

Reference numeral 1 denotes a main body, and an indoor side intake port 2 is formed on the front surface of the main body 1, and an indoor side exhaust port 3 is formed on the front side of the main body 1 on the indoor side intake port 2 side. The inner exhaust port 3 is driven by an electric motor 50 to change the exhaust air from the indoor exhaust port 3 to the left / right direction. It has an up-down changing blade 5. 6 is the main body 1
An outdoor air intake port and an outdoor air exhaust port 7 formed in the upper part of the back surface.

Reference numeral 8 denotes a water pan for vertically partitioning the inside of the main body 1, and 9 is a partition plate for partitioning the lower space of the main body 1 into front and rear. The water receiver 11 is detachably stored.

Reference numeral 12 is a first fan casing which is placed and fixed on the water receiving tray 8 and is located in front of the main body 1, and 13 is the first fan casing.
A cooler, which is an indoor heat exchanger mounted on the intake side of the fan casing 12, 14 is a cross-flow fan arranged in the first fan casing 12, and 15 is a first rotating drive of the cross-flow fan 14. One motor, the cross flow fan 14 and the first motor 15
This constitutes an indoor blower.

Reference numeral 16 denotes a second fan casing which is fixedly mounted on the water receiving tray 8 and is located at the rear of the main body 1, and 17 denotes the second fan casing.
A condenser serving as an outdoor heat exchanger fixed to the fan casing 16, 18 is a sirocco fan disposed in the second fan casing 16, and 19 is a second motor for rotationally driving the sirocco fan 18. , Sirocco fan 18 and second motor 19
This constitutes an outdoor blower.

Reference numeral 20 denotes an operating portion formed above the front portion of the main body 1, 21 denotes a receiving portion provided in the operating portion 20, which receives an infrared signal from a transmitter (not shown) and compresses it based on the signal. The machine 10, the indoor side blower, and the outdoor side blower are controlled. Reference numeral 22 denotes a power button provided on the operation unit 20, which operates a power switch of a switch board 23 provided on the main body 1 to compress the compressor 10 and the chamber according to an operation state selected by an operation switching button 24 described later. Power is supplied to the inner blower and the outdoor blower.

Reference numeral 24 denotes an operation changeover button, which is an "cooling" operation for cooling the room by operating an operation changeover switch (not shown) of the switch board 23 to blow cool air from the indoor side exhaust port 3 to the indoor side exhaust port 3 A "dehumidifying" operation of blowing dry air to dehumidify the room and a "blowing" operation of blowing only air from the indoor side exhaust port 3 are switched. An air volume selector button 25 operates an air volume selector switch (not shown) on the switch board 23 to switch the air blown from the indoor blower to "strong", "medium", "weak" and "rhythm" to switch the air volume in a preset order. It is like this. Reference numeral 26 denotes a temperature setting button, which operates a temperature setting switch (not shown) of the switch board 23 to set the room temperature to be maintained during the "cooling" operation. 27 is an ON timer setting button,
The operation start time is set by operating an ON timer setting switch (not shown). Reference numeral 28 denotes an OFF timer setting button, which is adapted to set an operation stop time by operating an OFF timer setting switch (not shown). 29
Is a wind direction changing blade operation button, and operates a wind direction changing blade operation switch (not shown) to control energization of the electric motor 50 for driving the wind direction left and right changing blades 4 of the indoor side exhaust port 3. 30 is a display part, and during the temperature setting operation by operating the temperature setting button 26,
The temperature and time are displayed during operation start time setting by operating the ON timer setting button 27 and during operation stop time setting by operating the OFF timer setting button 28, and room temperature is displayed in other states. Is becoming Further, the display unit 30 is configured to display the content of the abnormality when any abnormality occurs.

Reference numeral 31 is an indoor filter disposed between the indoor intake port 2 and the cooler 13, 32 is an outdoor filter disposed between the rear surface of the main body 1 and the condenser 17, The indoor filter 31 and the outdoor filter 32 are designed to be removably inserted through openings formed in the side surface of the main body 1.

Reference numeral 33 denotes an intake / exhaust duct, which comprises a main body side holder 34, a window frame holder 35, an intake duct 36 and an exhaust duct 37. The main body side holder 34 inserts and locks the locking protrusion formed on the upper portion into the locking portion formed on the inclined portion of the upper surface of the main body 1, and the engaging portion between the locking protrusion and the locking portion serves as a shaft. The side holder 34 is rotated to bring the main body side holder 34 into contact with the inclined portion, and in this state, the mounting screw is screwed into the screwing portion of the main body 1 through the through hole formed in the lower portion, and the main body side holder 34 is attached. Body 1
It is designed to be attached to.

The window frame holder 35 is detachably mounted by inserting the flange portion formed on the outer periphery into the engaging groove of the window frame 38 so as to be detachable.

Next, the circuit will be described based on the circuit diagram shown in FIG.

Reference numeral 39 denotes a switch circuit, which is operated by operating the power button 22, the operation switching button 24, the wind speed switching button 25, the temperature setting button 26, the ON timer setting button 27, the OFF timer setting button 28 and the wind direction changing blade operation button 29. A signal from each switch to be controlled is output to a control circuit 45 described later. Reference numeral 40 denotes a receiving circuit, which outputs a signal from the transmitter received by the receiving unit 21 provided in the operation unit 20 to the control circuit 45. Reference numeral 41 is a room temperature detection circuit, which controls the output of a room temperature detection thermistor arranged near the indoor side intake port 2
It is designed to output to. Reference numeral 42 denotes an outside air temperature detecting circuit, which is arranged near the outdoor side intake port 6 and outputs the output of an outside air temperature detecting thermistor for detecting the temperature of the air taken in from the outdoor side intake port 6 to the control circuit 45. It has become. 43 is a cooler temperature detection circuit, which controls the output of the cooler temperature detection thermistor that detects the temperature of the cooler 13.
It is designed to output to 45. 44 is a full water detection circuit,
The output of a micro switch for detecting fullness of the water receiver 11 is output to the control circuit 45.

Reference numeral 45 denotes a control circuit having a microcomputer, which includes the switch circuit 39, the receiving circuit 40, and the room temperature detecting circuit.
41, an outside air temperature detection circuit 42, a cooler temperature detection circuit 43, and a full water detection circuit 44, based on inputs from a compressor drive circuit 46, an indoor blower drive circuit 47, an outdoor blower drive circuit, which will be described later.
48, wind direction changing wing drive circuit 49, display circuit 51 and notification circuit 52
A control signal is output to.

Reference numeral 46 denotes a compressor drive circuit, which drives and controls the compressor 10 based on a control signal from the control circuit 45. 47 is an indoor blower drive circuit, which is the control circuit
The first motor 15 of the indoor blower based on the control signal from 45
Drive control. An outdoor blower drive circuit 48 drives and controls the second motor 19 of the outdoor blower based on a control signal from the control circuit 45. Reference numeral 49 is a wind direction changing blade driving circuit, which drives and controls the electric motor 50 of the wind direction changing blade 4 based on the control signal from the control circuit 45. Reference numeral 51 is a display circuit, which is provided on the operation unit 20 based on a signal from the control circuit 45.
Further, the room temperature, the set temperature, the operation start time, the operation stop time, etc. are selectively displayed. Reference numeral 52 denotes a notification circuit, which operates the notification device * based on the control signal from the control circuit 45 to call the user's attention.

Next, the operation will be described based on the first embodiment shown in FIGS.

2 and 3 show a flowchart of the cooling routine. When the operation switching button 24 is operated to select the "cooling" operation, the compressor 10, the indoor blower and the outdoor blower are driven in step S1. .. At this time, the indoor blower blows the air volume set by the air volume switching button 25. In step S2, the temperature of the outside air taken in through the intake / exhaust duct 33 is detected, and in step S3, the blowing amount of the outdoor blower is set according to the outside air temperature.
That is, as shown in FIG. 4, when the outside air temperature is high, the amount of air blown by the outdoor blower is increased to efficiently cool the condenser 17 even with high temperature air, and when the outside air temperature is low. Reduces the amount of air blown by the outdoor blower to prevent the temperature of the cooler 13 from dropping too low, and also prevents the noise from increasing by unnecessarily increasing the amount of air blown by the outdoor blower. There is.

In step S4, it is determined whether or not a predetermined time from the start of operation until the temperature of the cooler 13 is stabilized, that is, 15 minutes in this embodiment. When a predetermined time has elapsed from the start of operation in step S4, the temperature of the outside air taken in through the outdoor intake port 6 is detected in step S5, and the temperature of the cooler 13 is detected in step S6. In step S7, step S5
Outside temperature detected in step S6 and cooler detected in step S6
13 Based on the temperature, set the air blow rates of the indoor blower and outdoor blower. That is, as shown in FIG. 5, when the temperature of the cooler 13 is low, the indoor blower increases the amount of air blown by the indoor blower and raises the temperature of the cooler 13 to prevent frost and ice from adhering to the cooler 13. Preventing it, and if the cooler 13 temperature is high,
Since the room temperature is high, the amount of air blown by the indoor blower is increased to give the user a cool sensation. Further, the outdoor blower is, as shown in FIG.
When the 13 temperature is low, the air flow rate of the outdoor blower is decreased, and together with increasing the air flow rate of the indoor blower, the cooler 13 temperature is increased, and when the cooler 13 temperature is high, The amount of air blown from the outdoor blower is increased, the cooling efficiency of the condenser 17 is improved, and the temperature of the cooler 13 is lowered.

Next, in steps S8 and S9, it is judged whether or not the cooler 13 has been kept in that state for a certain period of time, in this embodiment, one minute, and if it is kept in that state for one minute, step S10 In, the air blow rates of the indoor blower and the outdoor blower are changed by one notch each. That is, the indoor blower increases the blow rate by one notch, and the outdoor blower increases the blow rate by one notch when the cooler 13 temperature is high, and increases the blow rate by one notch when the cooler 13 temperature is low. The air volume is reduced by one notch.

Next, a second embodiment will be described with reference to FIGS.

FIG. 7 and FIG. 8 explain the flowchart of the cooling routine. When the operation switching button 24 is operated to select the "cooling" operation, the compressor 10, the indoor blower and the outdoor blower are driven in step S11. At this time, the indoor blower blows the air volume set by the air volume switching button 25, that is, the air volume when the set air volume is 25 to 30 ° C., and the outdoor air blower blows the air volume of the indoor air blower. It is designed to blow the corresponding amount of air.

After the elapse of time until the cooling air of the condenser 17 becomes the outside air, the temperature of the air taken in from the outdoor air intake port 6 is detected in step S12, and the temperature of the air is detected in step S13. That is, the blow rate of the outdoor blower is set according to the outside air temperature and the blow rate of the indoor blower. This setting is the same as in FIG. 4 of the first embodiment described above.

Next, in step S14, the temperature of the indoor air taken in from the indoor air intake port 2 is detected, and in step S15, the amount of air blown by the indoor blower is corrected according to the room temperature. That is, as shown in FIG. 9, when the room temperature is high, the amount of air blown by the indoor blower is increased so that the user feels cool, and when the room temperature is low, the amount of air blown by the indoor blower is decreased. I try not to make people feel cold.

In step S16, it is determined whether or not a predetermined time from the start of operation until the temperature of the cooler 13 is stabilized, that is, 15 minutes in this embodiment. When a predetermined time has passed from the start of operation in step S16,
In step S17, the temperature of the outside air taken in through the outdoor air intake port 6 is detected, and in step S18, the temperature of the cooler 13 is detected. In step S19, the amount of air blown by the outdoor blower is set based on the outside air temperature detected in step S17 and the cooler 13 temperature detected in step S18. That is, as shown in FIG. 6, when the temperature of the cooler 13 is low, the outdoor blower reduces the air flow rate of the outdoor blower, raises the temperature of the cooler 13 and cools the cooler 13 when the temperature of the cooler 13 is low. When the temperature of the cooler 13 is high, the amount of air blown by the outdoor blower is increased, the cooling efficiency of the condenser 17 is improved, and the cooler 13 temperature is lowered.

Next, step S20 and step S21
In the present embodiment, it is determined whether or not the cooler 13 has been kept in that state for 1 minute, and if it is kept in that state for 1 minute, in step S22, the blower of the indoor blower and the outdoor blower is sent. The air volume is changed by 1 notch each. That is, the indoor blower increases the blow rate by one notch, and the outdoor blower increases the blow rate by one notch when the cooler 13 temperature is high, and increases the blow rate by one notch when the cooler 13 temperature is low. The air volume is reduced by one notch.

[0036]

According to the structure of claim 1 of the present invention, it is possible to supply the cold air having a desired temperature regardless of the change in the temperature.
The effect that a desired cool feeling can be given to a user is exhibited.

According to the configuration of claim 2 of the present invention, there is an effect that a desired cool feeling can be given to the user regardless of the temperature change.

According to the third aspect of the present invention, the desired coolness can be given to the user irrespective of the temperature change.

According to the structure of claim 4 of the present invention, it is possible to supply the cool air having the desired temperature regardless of the change in the temperature, and to provide the user with a desired cool feeling.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing an embodiment of the present invention.

FIG. 2 is a flowchart showing the same cooling routine.

FIG. 3 is a flowchart showing the same cooling routine.

FIG. 4 is a diagram for explaining the operation of the outdoor fan.

FIG. 5 is a diagram illustrating an operation of the indoor blower.

FIG. 6 is a diagram illustrating an operation of the outdoor fan of the same room.

FIG. 7 is a flowchart showing a cooling routine of the second embodiment.

FIG. 8 is a flowchart showing the same cooling routine.

FIG. 9 is a diagram illustrating an operation of the indoor blower.

FIG. 10 is an enlarged plan view of the operation unit.

FIG. 11 is a vertical cross-sectional view of the same air conditioner body.

FIG. 12 is a cross-sectional view of the same air conditioner body.

FIG. 13 is a side view showing the same usage state.

FIG. 14 is a front view showing the same usage state.

[Explanation of symbols]

 1 Main body 13 Cooler 14 Cross flow fan 15 1st motor 17 Condenser 18 Sirocco fan 19 2nd motor 42 Outside air temperature detection circuit 43 Cooler temperature detection circuit 45 Control circuit

Claims (4)

[Claims] 1. An air conditioner having a compressor, an indoor heat exchanger, an outdoor heat exchanger, an indoor air blower, and an outdoor air blower provided in the main body, and air supplied to the outdoor heat exchanger. The air conditioner is provided with a temperature detecting means for detecting the temperature of the outdoor air blower, and a control circuit for controlling the air flow rate of the outdoor blower based on the output of the temperature detecting means. 2. An air conditioner having a compressor, an indoor heat exchanger, an outdoor heat exchanger, an indoor air blower, and an outdoor air blower in the main body, and detects the temperature of the indoor heat exchanger. The first temperature detecting means and the second temperature detecting means for detecting the temperature of the air supplied to the outdoor heat exchanger are provided, and based on the output of the first temperature detecting means and the output of the second temperature detecting means, An air conditioner comprising a control circuit for controlling the amount of air blown by an outdoor fan. 3. An air conditioner having a compressor, an indoor heat exchanger, an outdoor heat exchanger, an indoor air blower, and an outdoor air blower in the main body, and first temperature detecting means for detecting room temperature, and The second temperature detecting means for detecting the temperature of the air supplied to the outdoor heat exchanger is provided, and the blow rate of the indoor blower is controlled based on the output of the first temperature detecting means. An air conditioner comprising a control circuit for controlling the amount of air blown by the outdoor fan based on the output. 4. In an air conditioner having a compressor, an indoor heat exchanger, an outdoor heat exchanger, an indoor air blower and an outdoor air blower provided in the main body, the air supplied to the outdoor heat exchanger. The air conditioner is provided with a temperature detecting means for detecting the temperature of the outdoor air blower, and a control circuit for controlling the air flow rate of the outdoor air blower based on the output of the temperature detecting means and the air flow rate of the indoor air blower. ..