JP2002277016A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner capable of suppressing a power consumption of a crankcase heater. SOLUTION: The air conditioner comprises a calendar sensing means 14 for sensing a daily date, a crankcase heater energizing means 13 for energizing a crankcase heater 12 for heating to evaporate a refrigerant in the compressor 2, and a crankcase heater control means 15 for controlling the energizing means 13 based on the data sensed by the calendar sensing means 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner capable of heating a compressor using a crankcase heater.

[0002]

2. Description of the Related Art A conventional air conditioner using a crankcase heater is disclosed in JP-A-4-273948.

Hereinafter, the conventional air conditioner will be described with reference to the drawings.

FIG. 13 is a schematic sectional view of a conventional air conditioner.

In FIG. 13, reference numeral 101 denotes a compressor.
The compressor 101 is provided with a crankcase heater 102 for heating the compressor 101. Reference numeral 103 denotes a dilution sensor for detecting a dilution degree of the refrigerating machine oil due to the dissolution of the refrigerant into the compressor 101. When the compressor 101 is a vertical compressor, it is installed near a lower inner bottom portion of the compression element. 1
04 is a microcomputer, 105 is a power supply for the crankcase heater 102, and 106 is a magnet switch.

The operation of the conventional air conditioner configured as described above will be described below.

A detection signal from the dilution sensor 103 is input to a microcomputer 104 of the control unit of the crankcase heater 102, and the microcomputer 104 turns on and off a magnet switch 106 interposed between the power supply 105 and the crankcase heater 102. Is issued. That is, the microcomputer 104 determines whether or not to energize the crankcase heater 102 based on the dilution degree detected by the dilution degree sensor 103 when the compressor 101 is started, and the control of the crankcase heater 102 is performed. The lock of the machine 101 is prevented.

[0008]

However, in the above-mentioned conventional configuration, the dilution degree sensor 103 is constantly exposed to a refrigerating machine oil or a refrigerant atmosphere having high chemical attack, and its temperature and pressure are increased.
There is a problem that the life is short and the price is high. When the dilution sensor 103 is damaged, the compressor 101 needs to be replaced or the dilution sensor 103 in the compressor 101 needs to be replaced with a new one, and the refrigerant in the refrigeration system needs to be exhausted. There were also problems such as high cost and long repair time.

SUMMARY OF THE INVENTION The present invention has been made to solve the conventional problems, and has as its object to provide an air conditioner which can save energy and has low product and service costs.

[0010]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention provides a calendar detecting means for detecting the date and time of each day, and a crankcase heater for energizing a crankcase heater for heating and evaporating a refrigerant in a compressor. Energizing means,
There is provided a crankcase heater control means for controlling the crankcase heater energizing means based on the date detected by the calendar detecting means.

The present invention also provides a calendar detecting means for detecting the date and time of each day, a frequency detecting means for detecting the frequency of the input power, and a crankcase for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. A heater energizing unit and a crankcase heater control unit that controls the crankcase heater energizing unit based on a month and day detected by the calendar detecting unit and a frequency detecting unit that detects a frequency of the input power are provided.

Further, according to the present invention, the crankcase heater control means includes a crankcase heater control means for changing the amount of power supplied to the crankcase heater power supply means in accordance with the date detected by the calendar detection means.

[0013] The present invention also provides a calendar detecting means for detecting the day and time of each day, an area setting means for setting an installation area, and a crankcase heater for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. Energizing means,
There is provided a crankcase heater control means for controlling ON / OFF of energization of the crankcase heater based on a month and day detected by the calendar detection means and an area setting means for setting the installation area.

According to the present invention, there is provided a calendar detecting means for detecting the date and time of each day, an area setting means for setting an installation area, and a crankcase heater for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. Energizing means,
Crankcase heater control means for controlling the amount of power supplied to the crankcase heater based on a month and day detected by the calendar detection means and an area setting means for setting the installation area is provided.

Further, the present invention provides a calendar detecting means for detecting the date and time of each day, a refrigerant amount setting means for setting a refrigerant amount, and a crankcase for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. Heater energizing means;
Crankcase heater control means for controlling energization of the crankcase heater is provided based on refrigerant amount setting means for setting the date and the refrigerant amount detected by the calendar detecting means.

According to these inventions, since the compressor is heated by the crankcase heater when necessary, an air conditioner that can reduce the power consumption of the crankcase heater can be obtained.

[0017]

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

(Embodiment 1) FIG. 1 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 2 is a flowchart. In FIG. 1, an air conditioner 1 has a cycle in which a compressor 2, a four-way valve 3, an outdoor heat exchanger 4, a dryer 5, and an indoor heat exchanger 6 are connected in a ring shape by piping to reversibly circulate a refrigerant. A liquid-side opening / closing solenoid valve 7 composed of, for example, an electromagnetic valve, an indoor-side capillary tube 8 and a gas-side opening / closing solenoid valve 9 are interposed before and after the indoor heat exchanger 6, respectively. An accumulator 10 is provided after the indoor heat exchanger 6, and the accumulator 10 is
And are connected by piping.

Reference numeral 11 denotes an outdoor capillary tube. Reference numeral 12 denotes a crankcase heater installed in the compressor 2. The crankcase heater 12 is connected to a crankcase heater energizing unit 13 that energizes the crankcase heater 12.

Reference numeral 14 denotes calendar detecting means for detecting the date and time of each day. In response to the signal from the calendar detecting means 14, the crankcase heater control means 15 sends a signal to the crankcase heater energizing means 13 to turn on the crankcase heater 12. -OFF control is performed. That is, the calendar detecting means 14, the crankcase heater controlling means 15,
The crankcase heater energizing means 13 and the crankcase heater 12 are connected in this order, and the crankcase heater 12 is controlled by a signal from the calendar detecting means 14.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in the cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the outdoor heat exchanger 4, liquefied in the dryer 5, water, dust, and metal. The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is in operation, the crankcase heater energizing means 13 stops energizing the crankcase heater 12. When the compressor 2 is stopped, as shown in step 4, the calendar detecting means 14 detects the date at that time. The detected date is sent from the calendar detecting means 14 to the crankcase heater control means 15, and a database in the crankcase heater control means 15 is checked.
To determine whether or not to energize the crankcase heater 12.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 1).

[0027]

[Table 1]

In this case, when the date detected by the calendar detecting means 14 is August 10, the crankcase heater control means 15 does not need to supply power to the crankcase heater 12 even if the compressor 2 is stopped. As a result, electricity is not sent to the crankcase heater 12. If the date detected by the calendar detecting means 14 is January 10, when the compressor 2 stops, the crankcase heater control means 15 supplies power to the crankcase heater 12 based on (Table 1). Is determined to be necessary, and the crankcase heater energizing means 1
The crankcase heater 12 heats the compressor 2 by the signal sent to 3 and the electricity sent from the crankcase heater energizing means 13.

Thus, the crankcase heater control means 15 controls the power supply to the crankcase heater 12 only when the outside air temperature is high and the power supply to the compressor 2 by the crankcase heater 12 is necessary. Since energization to the case heater 12 can be stopped, it is not necessary to always energize when the compressor 2 stops, and energy saving of the crankcase heater 12 can be achieved. Further, the ON / OFF of the crankcase heater 12 is controlled by a calendar.
Is very simple to control. In addition,
The effect that a temperature sensor is unnecessary is obtained.

The crankcase heater control table shown in (Table 1) is an example of the present invention, and the crankcase heater control of the present invention is not limited to only (Table 1).

(Embodiment 2) FIG. 3 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 4 is a flowchart. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 3, reference numeral 18 denotes frequency detecting means for detecting a power supply frequency in the area, and 17 denotes a crankcase heater energizing means 17 for energizing the crankcase heater 12 based on signals from the calendar detecting means 14 and the frequency detecting means 16. This is a crankcase heater control means for performing control. That is, the calendar detecting means 14 and the frequency detecting means 16, the crankcase heater control means 18, the crankcase heater energizing means 17, and the crankcase heater 12 are connected in this order. The configuration is such that the heater 12 is controlled.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in the cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the outdoor heat exchanger 4, liquefied in the dryer 5, water, dust, and metal. The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor-side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is operating, the crankcase heater energizing means 17 is connected to the crankcase heater 12.
Stop supplying power to When the compressor 2 is stopped, as shown in step 4, the calendar detecting means 14 detects the date at that time. Further, the frequency detecting means 16
However, it also detects the local frequency. The detected month and day are sent from the calendar detecting means 14 and the detected frequency is sent from the frequency detecting means 16 to the crankcase heater control means 18. By checking a database in the crankcase heater control means 18, the crankcase The heater control means 18 determines whether to energize the crankcase heater 12.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 2).

[0039]

[Table 2]

In this case, if the month and day detected by the calendar detecting means 14 are September 10, and the frequency of the area is 60 Hz, the crankcase heater controlling means is provided even if the compressor 2 is stopped. 18 judges that power supply to the crankcase heater 12 is not necessary, and electricity is not sent to the crankcase heater 12. However, if the frequency of the region is 50 Hz even on the same month and day, when the compressor 2 stops, the crankcase heater control means 18 determines that the power supply to the crankcase heater 12 is necessary, and A signal is sent from the control unit 18 to the crankcase heater energizing unit 17, and according to this signal, electricity is sent from the crankcase heater energizing unit 17 to the crankcase heater 12, and the crankcase heater 12 heats the compressor 2. .

When the month and day detected by the calendar detecting means 14 are January 10, and even if the frequency of the area is 50 or 60 Hz, when the compressor 2 is stopped, the crankcase heater controlling means 18 Judge that it is necessary to energize the crankcase heater 12, electricity is sent from the crankcase heater energizing means 17 to the crankcase heater 12, and the crankcase heater 12 heats the compressor 2.

Thus, the crankcase heater control means 18 supplies power to the crankcase heater 12 only when the outside air temperature is high and the crankcase heater 12 needs to supply power to the compressor 2. Since the power supply to the compressor 12 can be stopped, it is not necessary to always supply power when the compressor 2 is stopped, and energy saving of the crankcase heater 12 can be achieved.

Further, since ON / OFF of the crankcase heater 12 is controlled by the calendar and the frequency, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained. Furthermore, the crankcase heater 1
Since 2 is determined by the date and the frequency, the accuracy of the temperature control of the crankcase heater 12 can be improved.

Incidentally, the crankcase heater control table shown in (Table 2) is an example of the present invention, and the crankcase heater control of the present invention is not limited to only (Table 2).

(Embodiment 3) FIG. 5 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 6 is a flowchart. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 5, reference numeral 19 denotes a crankcase heater energizing means for energizing the crankcase heater;
Is a crankcase heater control means for controlling the amount of electricity supplied to the crankcase heater 12. That is, the calendar detecting means 14, the crankcase heater controlling means 20, the crankcase heater energizing means 19, and the crankcase heater 12 are connected in this order, and the signal of the calendar detecting means 14 controls the crankcase heater 12. I have.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in a cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the outdoor heat exchanger 4, liquefied in the dryer 5, water, dust, and metal. The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor-side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed into a high-temperature and high-pressure state by the compressor 2, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is operating, the crankcase heater control means 20 controls the operation of the crankcase heater 12.
Stop supplying power to When the compressor 2 is stopped, as shown in step 4, the calendar detecting means 14 detects the date at that time. The detected date is sent from the calendar detection means 14 to the crankcase heater control means 20, and the crankcase heater control means 20 checks the database in the crankcase heater control means 20 so that the crankcase heater control means 20 Decide what level of energization to perform.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 3).

[0053]

[Table 3]

In this case, if the date detected by the calendar detecting means 14 is August 10, even if the compressor 2 is stopped, the crankcase heater control means 20 is based on (Table 3). The amount of power supplied to the crankcase heater 12 is determined to be 0, and no electricity is sent to the crankcase heater 12. Further, when the date detected by the calendar detecting means 14 is April 30 or October 31, when the compressor 2 is stopped, the amount of electricity supplied to the crankcase heater 12 by the crankcase heater control means 20 is reduced. It is determined that 60% of the rating is necessary, and a signal is sent to the crankcase heater energizing means 19 to send 60% of the rating electricity,
Electricity is transmitted from the crankcase heater energizing means 19 to the crankcase heater 12, and the crankcase heater 12 heats the compressor 2.

When the date and time detected by the calendar detecting means 14 is February 10, when the compressor 2 stops, the crankcase heater control means 20 controls the amount of electricity supplied to the crankcase heater 12 to a rated value. It is determined that 100% is required, and a signal is sent to the crankcase heater energizing means 19 so as to send 100% of the rated electricity. The heater 12 heats the compressor 2.

Accordingly, the crankcase heater control means 20 supplies the necessary amount of electricity to the crankcase heater 12 only when the outside air temperature is high and the compressor 2 is required to be heated by the crankcase heater 12, so that the predetermined period is not required. Since the power supply to the crankcase heater 12 can be stopped, it is not necessary to constantly supply 100% of the rated power when the compressor 2 is stopped. Therefore, the energy consumption of the crankcase heater 12 can be reduced, and the power suitable for each season can be achieved. Therefore, the control accuracy of the crankcase heater 12 is improved.

Further, since the crankcase heater 12 is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The crankcase heater control table shown in (Table 3) is an example of the present invention, and the crankcase heater control of the present invention is not limited to only (Table 3).

(Embodiment 4) FIG. 7 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 8 is a flowchart. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 7, reference numeral 21 denotes an area setting means for setting an installation area; 22, a crankcase heater energizing means for sending electricity to the crankcase heater 12; 23, based on the area setting means 17 and the calendar detecting means 14. This is a crankcase heater control unit that controls the energization of the crankcase heater 12. That is, the calendar detecting means 14, the area setting means 21, the crankcase heater control means 23, the crankcase heater energizing means 22,
The crankcase heater 12 is connected in this order, and the crankcase heater 12 is controlled by signals from the calendar detecting means 14 and the area setting means 21.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in the cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the outdoor heat exchanger 4, liquefied in the dryer 5, water, dust, metal The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor-side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed to a high temperature and a high pressure by the compressor 2, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is in operation, the crankcase heater control means 23 controls the operation of the crankcase heater 12.
Stop supplying power to When the compressor 2 is stopped, as shown in step 4, the calendar detecting means 14 detects the date at that time. The detected month and day are sent from the calendar detecting means 14 to the crankcase heater control means 23, and the database in the crankcase heater control means 23 is checked. Decide what level of energization to perform.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 4).

[0067]

[Table 4]

In this case, when the date detected by the calendar detecting means 14 is August 10 and the area setting means 21 detects that the installation area is Hokkaido, even if the compressor 2 is stopped, the crank is stopped. Based on (Table 4), the case heater control means 23 determines that the power supply to the crankcase heater 12 is OFF, and the electricity is not sent to the crankcase heater 12. If the area setting unit 17 detects that the installation area is Okinawa, electricity is not sent to the crankcase heater 12 based on the determination in (Table 4).

When the date detected by the calendar detecting means 14 is October 31 and the area setting means 21 detects that area is Hokkaido, the crankcase heater control means is provided even if the compressor 2 is stopped. 23 indicates that the power supply to the crankcase heater 12 is ON based on (Table 4),
The crankcase heater control unit 23 sends a signal to the crankcase heater energizing unit 22, and electricity is sent from the crankcase heater energizing unit 22 to the crankcase heater 12 to heat the compressor 2. When the area setting unit 17 detects that the installation area is Okinawa, the crankcase heater control unit 23 determines from Table 4 that the transmission of electricity is unnecessary, and the electricity is not transmitted to the crankcase heater 12. Will be.

When the date detected by the calendar detecting means 14 is January 10, and the area setting means 21 detects that the installation area is Hokkaido, the crankcase heater control is performed even if the compressor 2 is stopped. The means 23 determines from Table 4 that it is necessary to energize the crankcase heater 12, and sends a signal to the crankcase heater energizing means 22 so that the crankcase heater energizing means 22
And the compressor 2 is heated by the crankcase heater 12.

Also, when the installation setting means 21 detects that the installation area is Okinawa, the crankcase heater control means 23 also determines that the crankcase heater 1
2 is determined to be necessary, electricity is sent from the crankcase heater communication means 22 to the crankcase heater 12, and the compressor 2 is heated.

Thus, the crankcase heater control means 23 sends a signal to the crankcase heater energizing means 22 only when the outside air temperature is low and the compressor 2 needs to be heated by the crankcase heater 12 in consideration of the season and the region. Since power is supplied to the case heater 12, power supply to the crankcase heater 12 can be stopped for a predetermined period of time, so that it is not necessary to supply power when the compressor 2 is stopped. Crankcase heater 12 with seasonal and regional power
, The control accuracy of the crankcase heater 12 is improved.

Further, since the crankcase heater is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The crankcase heater control table shown in (Table 4) is an example of the present invention, and the crankcase heater control of the present invention is not limited to only (Table 4).

(Embodiment 5) FIG. 9 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 10 is a flowchart. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

In FIG. 9, reference numeral 24 denotes a region setting means for setting an installation area, 25 denotes a crankcase heater energizing means for sending electricity to the crankcase heater 12, and 26 denotes a region setting means 24 and the calendar detecting means 14. This is a crankcase heater control unit that controls the energization of the crankcase heater 12. That is, the calendar detecting means 14 / region setting means 24, crankcase heater control means 26, crankcase heater energizing means 25,
The crankcase heater 12 is connected in this order, and the crankcase heater 12 is controlled by signals from the calendar detecting means 14 and the area setting means 24.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in the cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied by the outdoor heat exchanger 4, and liquefied by the dryer 5 to water, dust, and metal. The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor-side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed to a high-temperature and high-pressure state by the compressor 2, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is operating, the crankcase heater control means 26
Stop supplying power to When the compressor 2 is stopped, the calendar detecting means 14 detects the date at that time as shown in step 10. The detected date is sent from the calendar detecting means 14 to the crankcase heater control means 26, and the database in the crankcase heater control means 26 is checked, whereby the crankcase heater control means 26 Decide what level of energization to perform.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 5).

[0083]

[Table 5]

In this case, if the date detected by the calendar detecting means 14 is August 10 and the area setting means 24 detects that the installation area is Hokkaido, the crankshaft is stopped even if the compressor 2 is stopped. Based on (Table 5), the case heater control means 26 determines that the power supply to the crankcase heater 12 is OFF, and the electricity is not sent to the crankcase heater 12. If the area setting unit 24 detects that the installation area is Okinawa, electricity is not sent to the crankcase heater 12 based on the determination in (Table 4).

When the date detected by the calendar detecting means 14 is October 31 and the area setting means 24 detects that area is Hokkaido, the crankcase heater control means is provided even if the compressor 2 is stopped. Reference numeral 26 indicates that the power supply to the crankcase heater 12 is ON based on (Table 5).
The crankcase heater control unit 26 sends a signal to the crankcase heater energizing unit 25, and electricity is sent from the crankcase heater energizing unit 25 to the crankcase heater 12 to heat the compressor 2.

If the area setting means 24 detects that the installation area is Okinawa, the crankcase heater control means 26 determines from Table 5 that the transmission of electricity is unnecessary, and the electricity is supplied to the crankcase heater 12. It will not be sent.

If the month and day detected by the calendar detecting means 14 are January 10, and the area setting means 24 detects that the installation area is Hokkaido, the crankcase heater control is performed even if the compressor 2 is stopped. The means 26 (Table 5) determines that it is necessary to energize the crankcase heater 12, and a signal is sent to the crankcase heater energizing means 25. And the crankcase heater 12
This heats the compressor 2.

Similarly, when the installation setting means 24 detects that the installation area is Okinawa, the crankcase heater control means 26 determines that the crankcase heater 1
It is determined that it is necessary to energize the compressor 2, and 100% of the rated electricity is sent to the crankcase heater 12 from the crankcase heater communication unit 25, and the compressor 2 is heated.

Accordingly, the crankcase heater control means 26 supplies power to the crankcase heater 12 by a necessary amount only when the outside air temperature is low and the compressor 2 needs to be heated by the crankcase heater 12 in consideration of the season and the region. Therefore, the power supply to the crankcase heater 12 can be stopped for a predetermined period.
Since there is no need to energize the crankcase heater by 00%, it is possible to further save the energy of the crankcase heater and to energize the crankcase heater 12 with electric power that matches the season and the region, so that the control accuracy of the crankcase heater 12 is further improved. I do. Further, since the crankcase heater 12 is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The crankcase heater control table shown in (Table 5) is an example of the present invention, and the crankcase heater control of the present invention is not limited to (Table 5).

(Embodiment 6) FIG. 11 is a system diagram of a refrigeration cycle of an air conditioner of the present invention, and FIG. 12 is a flowchart. In addition, about the same structure as Embodiment 1,
The same reference numerals are given and the detailed description is omitted.

In FIG. 11, reference numeral 27 denotes a refrigerant amount setting means for setting the refrigerant amount of the system, and reference numeral 20 denotes a crankcase heater for supplying a current to the crankcase heater 12 based on the refrigerant amount setting means 27 and the calendar detecting means 14. The power supply means 28 and 29 are crankcase heater control means for controlling the crankcase heater power supply means 28. That is, the calendar detecting means 14 / refrigerant amount detecting means 27, the crankcase heater controlling means 29, the crankcase heater energizing means 28, and the crankcase heater 12 are connected in this order. The configuration is such that the crankcase heater 12 is controlled.

The operation of the air conditioner configured as described above will be described.

When the air conditioner 1 of the present invention is operated, in the cooling operation, the refrigerant is compressed to a high temperature and high pressure state by the compressor 2, liquefied in the outdoor heat exchanger 4, liquefied in the dryer 5, water, dust, and metal. The contaminants such as powder are removed, and the dust reaches the indoor heat exchanger 6 through the indoor side capillary tube 11. After the refrigerant takes heat from the surrounding air and evaporates in the indoor heat exchanger 6, the refrigerant passes through the accumulator 10 and returns to the compressor 2, thereby performing air conditioning by cooling.

In the heating operation, the refrigerant is compressed by the compressor 2 to a high-temperature and high-pressure state, liquefied in the indoor heat exchanger 6, and reaches the outdoor heat exchanger 4 through the outdoor capillary tube 11. At this time, the refrigerant removes contaminants such as moisture, dust, metal powder and the like in the dryer 5. After the refrigerant takes heat from the surrounding air in the outdoor heat exchanger 4 and evaporates, the refrigerant passes through the accumulator 10 and returns to the compressor 2 for circulation.

According to the present embodiment, the following operation
Energy saving of the crankcase heater 12 can be achieved.

When the power of the air conditioner 1 is turned on, the air conditioner 1 checks whether the compressor 2 is stopped as shown in step 2. When the compressor 2 is in operation, the crankcase heater control means 29
Stop supplying power to When the compressor 2 is stopped, as shown in step 4, the calendar detecting means 14 sets the current month and day.

The refrigerant amount setting means 27 sets the refrigerant amount in the system. The detected month and day are sent from the calendar detecting means 14 to the crankcase heater controlling means 28.
The detected amount of refrigerant is sent from the refrigerant setting means 27 to the crankcase heater control means 29, and a database in the crankcase heater control means 29 is checked based on these data. 29 determines whether to energize the crankcase heater 12.

For example, it is assumed that the control of the crankcase heater 12 is performed as shown in (Table 6).

[0100]

[Table 6]

In this case, the date detected by the calendar detecting means 14 is August 10, and the refrigerant amount setting means 27 determines that the refrigerant charging amount is less than 50% of the maximum charging amount of the system.
At 0% or more, even when the compressor 2 is stopped, the crankcase heater control means 26 determines from Table 6 that power to the crankcase heater 12 is unnecessary from the base, and electricity is sent to the crankcase heater 12. Will not be able to do it.

When the date detected by the calendar detecting means 14 is October 31 and the refrigerant amount setting means 27 determines that the refrigerant charging amount is less than 50% of the maximum charging amount of the system, the crankcase heater The control means 29 determines from Table 6 that it is necessary to energize the crankcase heater 12 at the base, and sends a signal to the crankcase heater energizing means 28 so that the crankcase heater energizing means 28 By sending 40% of electricity, the compressor 2 is heated by the crankcase heater 12. Also,
If the refrigerant charge is 50% or more of the maximum charge of the system, 60% of the rated electric power is sent to the crankcase heater 12 from the crankcase heater energizing means 25, and the compressor 2 is heated. If the date detected by 14 is January 10, and the refrigerant amount setting unit 27 determines that the refrigerant charge is less than 50% of the maximum charge of the system, the crankcase heater control unit 29 performs the operation (Table 6). Then, it is determined that energization of the crankcase heater 12 is necessary, and a signal is sent to the crankcase heater energization means 28. The crankcase heater energization means 28 sends 80% of the rated electricity to the crankcase heater 12, The compressor 2 is heated by the case heater 12. When the charged amount of the refrigerant is 50% or more of the maximum charged amount of the system, 100% of the rated electricity is transmitted to the crankcase heater 12 from the crankcase heater energizing means 25, and the compressor 2 is heated.

Thus, the crankcase heater energizing means 28 takes into account the amount of refrigerant in the system and takes the necessary amount of crankcase heater only when the outside temperature is low and the compressor 2 needs to be heated by the crankcase heater 12. 1
2, the power to the crankcase heater 12 can be stopped for a predetermined period of time. Therefore, when the compressor 2 is stopped, it is not necessary to supply 100% of the rated power when the compressor 2 is stopped. it can. In addition, since the crankcase heater is energized with the electric power corresponding to the charged amount of the refrigerant, the control accuracy of the crankcase heater is improved. Further, since the crankcase heater is controlled based on the calender and the amount of refrigerant charged, the control is very simple.
In addition, the effect that a temperature sensor is unnecessary is obtained.

Note that the crankcase heater control table shown in (Table 6) is an example of the present invention, and the crankcase heater control of the present invention is not limited to only (Table 6).

[0105]

As described above, according to the first aspect of the present invention,
The invention described in (1) is a calendar detecting means for detecting the day and time of each day, a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor, and a month and day detected by the calendar detecting means. A crankcase heater control means for controlling the crankcase heater energizing means based on the signal. The power supply to the crankcase heater is stopped for a predetermined period by the crankcase heater control means using a signal from the calendar detecting means. Therefore, energy saving of the crankcase heater can be achieved. Further, since ON / OFF of the crankcase heater is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The invention according to claim 2 of the present invention
A calendar detecting means for detecting the date and time of each day; a frequency detecting means for detecting the frequency of the input power; a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor; and the calendar detecting means. And a crankcase heater control means for controlling the crankcase heater energizing means based on a frequency detecting means for detecting a detected date and a frequency of the input power. The power supply to the crankcase heater can be stopped by the crankcase heater control means for a predetermined period by using, so that energy saving of the crankcase heater can be achieved. Also, according to the calendar, the crankcase heater O
The control is very simple because N-OFF is controlled. Further, since the crankcase heater OFF period can be changed between 50 Hz and 60 Hz, the crankcase heater O
The accuracy of N-OFF can be improved. In addition, the effect that a temperature sensor is unnecessary is obtained.

The invention according to claim 3 of the present invention provides
The crankcase heater control means changes the amount of power supplied to the crankcase heater power supply means in accordance with the month and day detected by the calendar detection means. In addition, since the input level to the crankcase heater can be changed, the input of the crankcase heater can be finely controlled, and further energy saving can be achieved. Further, since the crankcase heater is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The invention according to claim 4 of the present invention provides:
Calendar detecting means for detecting the day and time of every day, area setting means for setting the installation area, crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor, and the calendar detecting means O based on the detected date and the area setting means for setting the installation area,
The crankcase heater control means for controlling N-OFF is provided, and the crankcase heater control means uses the signal of the calendar detection means for a predetermined period.
Since the input level to the crankcase heater can be changed for each region, the input of the crankcase heater can be finely controlled, and further energy saving can be achieved. Further, since the crankcase heater is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

The invention according to claim 5 of the present invention provides:
Calendar detecting means for detecting the day and time of each day, area setting means for setting an installation area, crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor, and the calendar detecting means. Crankcase heater control means for controlling the amount of power supply of the crankcase heater power supply means based on the detected month and day and the area setting means for setting the installation area, using a signal of the calendar detection means, Since the input level to the crankcase heater can be changed for each area for a predetermined period by the crankcase heater control means, the input of the crankcase heater can be finely controlled, and further energy saving can be achieved. Further, since the crankcase heater is controlled by the calendar, the control is very simple. In addition, the effect that a temperature sensor is unnecessary is obtained.

Further, the invention according to claim 6 of the present invention provides:
Calendar detecting means for detecting the date and time of each day, refrigerant amount setting means for setting the amount of refrigerant, crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor, and the calendar detecting means Crankcase heater control means for controlling the amount of electricity of the crankcase heater energizing means based on the detected month and day and the refrigerant amount setting means for setting the refrigerant amount, using a signal of the calendar detecting means Since the input level to the crankcase heater can be changed for each predetermined amount of refrigerant by the crankcase heater control means for a predetermined period, the input of the crankcase heater can be finely controlled, and further energy saving can be achieved. Further, since the crankcase heater is controlled by the calendar, the control is very simple.
In addition, the effect that a temperature sensor is unnecessary is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram of an air conditioner and a first embodiment of the present invention.

FIG. 2 is a flowchart according to the first embodiment of the present invention.

FIG. 3 is an air conditioner and a block diagram thereof according to Embodiment 2 of the present invention.

FIG. 4 is a flowchart according to a second embodiment of the present invention.

FIG. 5 is an air conditioner and a block diagram thereof according to Embodiment 3 of the present invention.

FIG. 6 is a flowchart according to a third embodiment of the present invention.

FIG. 7 is a block diagram illustrating an air conditioner according to a fourth embodiment of the present invention.

FIG. 8 is a flowchart according to the fourth embodiment of the present invention.

FIG. 9 is a block diagram illustrating an air conditioner according to a fifth embodiment of the present invention.

FIG. 10 is a flowchart according to the fifth embodiment of the present invention.

FIG. 11 is a block diagram illustrating an air conditioner according to a sixth embodiment of the present invention.

FIG. 12 is a flowchart according to the sixth embodiment of the present invention.

FIG. 13 is a block diagram showing the vicinity of a compressor of a conventional intake air conditioner.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Air conditioner 2 Compressor 12 Crankcase heater 13, 17, 19, 22, 25, 28 Crankcase heater energizing means 14 Calendar detecting means 15, 18, 20, 23, 26, 29 Crankcase heater controlling means 16 Frequency detection Means 21, 24 Area setting means 27 Refrigerant amount setting means

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yasuyuki Doi 4-5-2-5 Takaidahondori, Higashiosaka-shi, Osaka Inside Matsushita Refrigerating Machinery Co., Ltd. (72) Inventor Takeshi Takeya 4-chome Takaidahondori, Higashiosaka-shi, Osaka No. 2 Matsushita Refrigeration Co., Ltd. (72) Inventor Hirokazu Hayashi 4-5-2 Takaita Hondori, Higashi-Osaka City, Osaka Prefecture No. 2 Matsushita Refrigeration Machine Co., Ltd. (72) Inventor Masato Ariki Takaitamoto, Higashi-Osaka City, Osaka Matsushita Refrigerating Machinery Co., Ltd. 4-5-2, Matsushita Refrigerating Machinery Co., Ltd. Matsushita Refrigeration Machinery Co., Ltd. (72) Inventor Masatoshi Takahashi 4-2-5 Takaida Hondori, Higashiosaka City, Osaka Prefecture Product 欣公 Osaka Higashi Takaidahondori 4-chome No. 2 No. 5 Matsushitareiki Co., Ltd. in the F-term (reference) 3L060 AA03 CC19 DD02 EE03

Claims (6)

[Claims] 1. A calendar detecting means for detecting the day and time of each day, a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating a refrigerant in a compressor, and a date and time detected by the calendar detecting means. An air conditioner comprising a crankcase heater control means for controlling the crankcase heater energizing means based on the control signal. 2. A calendar detecting means for detecting the day and time of each day, a frequency detecting means for detecting the frequency of the input power, and a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. An air conditioner provided with a crankcase heater control means for controlling the crankcase heater energizing means based on a frequency detecting means for detecting a month and a day detected by the calendar detecting means and a frequency of the input power. . 3. The crankcase heater control means according to claim 1, wherein said crankcase heater control means includes a crankcase heater control means for changing a power supply amount of said crankcase heater power supply means in accordance with a month and day detected by said calendar detection means. Air conditioner. 4. A calendar detecting means for detecting the date and time of each day, a region setting means for setting an installation area, a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor, Crankcase heater control means for controlling ON / OFF of energization of the crankcase heater energization means based on an area setting means for setting the month and day detected by the calendar detection means and the installation area is provided. Air conditioner. 5. A calendar detecting means for detecting every day and month, a region setting means for setting an installation area, a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating a refrigerant in a compressor, An air conditioner comprising crankcase heater control means for controlling the amount of power supplied to the crankcase heater power supply means based on the date and time detected by the calendar detection means and the area setting means for setting the installation area. . 6. A calendar detecting means for detecting the date and time of each day, a refrigerant amount setting means for setting a refrigerant amount, and a crankcase heater energizing means for energizing a crankcase heater for heating and evaporating the refrigerant in the compressor. A crankcase heater control means for controlling the amount of power supplied to the crankcase heater power supply means on the basis of the date and time detected by the calendar detection means and a number of refrigerant quantity setting means for setting the refrigerant quantity. Air conditioner.