JPH08193759A - Control device for freezer with freezer oil non-compatible with refrigerant - Google Patents

Abstract

PURPOSE: To evaporate condensed and liquified refrigerant and to prevent a compressor from being damaged under poor lubrication by a method wherein a heater is turned ON to heat the compressor under a condition in which it is assumed that a surrounding air temperature is decreased, the refrigerant in the compressor is condensed and liquified to cause the refrigerant and the oil of the freezer to be separated in two-phase state. CONSTITUTION: A compressor 1 is provided with a heater 6, and a surrounding air temperature sensor 7 for detecting a surrounding air temperature and outputting it is mounted at an outdoor heat exchanger 3. When the surrounding air temperature is decreased, the refrigerant is condensed and liquified within the compressor 1, and under a condition in which the refrigerant and the oil of the freezer are assumed to be separated in two-phase (not soluble to each other), the heater 6 is turned ON so as to heat the compressor. In this way, the condensed and liquified refrigerant is evaporated and a damage caused by a poor lubrication with flowing-in of the liquid refrigerant at the time of energization at a sliding part in the compressor 1 is prevented. With such an arrangement as above, it is possible to perform the most- suitable operation at the time of energization and to realize a freezing cycle control.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerating apparatus using a refrigerating machine oil which is incompatible with a refrigerant and a control apparatus for the refrigerating apparatus.

[0002]

2. Description of the Related Art In recent years, from the standpoint of protecting the global environment, regulations on CFCs that destroy the ozone layer have been strengthened, and it has been decided to abolish CFC (chlorofluorocarbon), which has a particularly high destructive power, at the end of 1995. Also, regarding the FCFC (hydrochlorofluorocarbon), which has a relatively small destructive power, the total amount regulation was started in 1996, and it has been decided that it will be completely abolished in the future. Therefore, for equipment that uses CFCs as a refrigerant, alternative refrigerants are being developed, and H that does not destroy the ozone layer is being developed.
Although FC (hydrofluorocarbon) has been studied, HFCs that cannot be used alone as an alternative refrigerant to HCFCs used in refrigerators and air conditioners have not been found. Therefore, two or more types of HFCs are used. Non-azeotropic mixed refrigerants mixed with refrigerants are considered promising.

In the conventional refrigeration system, it has been indispensable to use compatible refrigerating machine oil that is well compatible with the refrigerant in order to maintain the lubricity of the sliding portion in the compressor. Ester oil is H
Since it is compatible with the non-azeotropic mixed refrigerant mixed with the FC type refrigerant, it is listed as a candidate for the refrigerating machine oil when the HFC type mixed refrigerant is used. If it is not managed properly, the refrigerating machine oil will be hydrolyzed in the refrigerating machine, or it will easily react chemically with foreign substances, and the refrigerating capacity and COP (coefficient of performance) will be deteriorated due to abrasion of the compressor mechanism. Also, since the HCFC-based refrigerant contains Cl, the refrigerant itself has a lubricating performance, but since the HFC-based refrigerant does not have it, the lubricity depends entirely on the refrigerating machine oil.
The selection of refrigeration oil is an important issue.

Therefore, as a refrigerating machine oil for a refrigerating apparatus using an HFC-based mixed refrigerant, an incompatible refrigerating machine oil (for example, alkylbenzene oil) is now reviewed and studied.

[0005]

However, when an incompatible refrigerating machine oil (for example, alkylbenzene oil) is used as the refrigerating machine oil of the refrigerating apparatus using the HFC-based mixed refrigerant, when the temperature of the compressor decreases. However, there is a problem that the refrigerant and the refrigerating machine oil are separated into two phases (the refrigerant and the refrigerating machine oil are not melted) to each other, resulting in poor lubrication of the sliding portion and damaging the compressor. The present invention solves the problems of the above conventional examples,
The purpose is to prevent the two-phase separation of the refrigerant and the refrigerating machine oil in the compressor and to improve the lubricity of the sliding part.

[0006]

In order to solve the above-mentioned problems, a control device for a refrigerating machine of the present invention is a compressor, a four-way valve, an outdoor heat exchanger, and a decompressor using refrigerating machine oil incompatible with a refrigerant. , An indoor heat exchanger is annularly connected to form a refrigerant circuit, a heating means is installed in the compressor, and an outdoor air temperature detecting means for detecting and outputting the outdoor air temperature is installed in the outdoor heat exchanger, for cooling and heating. Before starting each operation, the first comparing means for comparing the outside air temperature output from the outside air temperature detecting means with a set value and outputting a control signal, the time during which the heating means is operating is measured and output. Heating time detecting means, second comparing means for outputting a control signal by comparing a value output from the heating time detecting means with a set value, and a memory storing an output mode for controlling ON / OFF of the heating means Means, originating from said first and second comparing means Those having a selection means for selecting one of the output modes of the memory means by the control signal, an output means for controlling the ON / OFF of the heating means in accordance with the output mode of the storage means.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using a non-compatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit. The compressor is provided with heating means, the indoor heat exchanger is provided with indoor fan control means, and the outdoor heat exchanger is provided outdoors. An outside air temperature detecting means for detecting and outputting the outside air temperature is installed in the outdoor heat exchanger, and an outside air temperature and a set value output from the outside air temperature detecting means before starting each operation of cooling and heating. And a first comparison means for outputting a control signal, a heating time detecting means for measuring and outputting the time during which the heating means is operating, and a value output from the heating time detecting means. ON / OF of second heating means, the indoor fan control means, and the outdoor fan control means, the second comparison means comparing the values with each other and outputting a control signal.
Storage means for storing an output mode for controlling F; selection means for selecting one of the output modes of the storage means by a control signal generated from the first and second comparison means; and an output mode of the storage means ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means
It has an output means for controlling.

Further, another control device for a refrigerating machine of the present invention is a compressor using a non-compatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the compressor has heating means, the indoor heat exchanger has indoor fan control means, and the outdoor heat exchanger has an outdoor fan. A control means is provided, and an outdoor air temperature detection means for detecting and outputting the outdoor air temperature is installed in the outdoor heat exchanger, and the outdoor air temperature output from the outdoor air temperature detection means and a plurality of set values before starting each operation of cooling and heating. And a first comparison means for outputting a control signal, a heating time detecting means for measuring and outputting the time during which the heating means is operating, and a value output from the heating time detecting means. ON / OF of second heating means, the indoor fan control means, and the outdoor fan control means, the second comparison means comparing the values with each other and outputting a control signal.
Storage means for storing an output mode for controlling F, selection means for selecting one of the output modes of the storage means by a control signal generated from the first and second comparison means, and an output mode of the storage means ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means
It has an output means for controlling.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using a non-compatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the compressor has heating means, the indoor heat exchanger has indoor fan control means, and the outdoor heat exchanger has an outdoor fan. A control means is provided, and a compressor temperature detecting means for detecting and outputting the temperature of the compressor is installed in the compressor, and a value and a set value output from the compressor temperature detecting means before starting each operation of cooling and heating. Comparing means for outputting a control signal, storage means for storing an output mode for controlling ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means, and control generated by the comparison means. Selection means for selecting one of the output modes of the storage means by a signal, and ON / OFF control of the heating means, the indoor fan control means, and the outdoor fan control means according to the output mode of the storage means Those having an output means that.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using a refrigerating machine oil incompatible with a refrigerant, a four-way valve,
An outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the compressor has heating means, the indoor heat exchanger has indoor fan control means, and the outdoor heat exchanger has outdoor air. Compressor temperature detection means for providing a fan control means to detect and output the temperature of the compressor to the compressor, and saturation temperature in the compressor to detect the pressure in the compressor to the compressor and calculate and output the saturation temperature. A detection means is installed, and a comparison means for outputting a control signal by comparing the value output from the compressor temperature detection means with the value output from the compressor saturation temperature detection means before starting each operation of cooling and heating. ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means
Storage means for storing the output mode for controlling the heating means, selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means, the heating means and the indoor fan according to the output mode of the storage means. It has a control means and an output means for controlling ON / OFF of the outdoor fan control means.

Further, another control device for a refrigerating machine of the present invention is a compressor using a non-compatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and heating means for the compressor, compressor temperature detection means for detecting and outputting the temperature of the compressor, and the compression An in-compressor pressure detecting means for detecting and outputting the pressure inside the machine is installed, and a calculating means for calculating and outputting the saturation temperature of the refrigerant from the value detected by the in-compressor pressure detecting means during each operation of cooling and heating, and ON / OFF of comparing means for comparing the value output by the computing means with the value detected by the compressor temperature detecting means and outputting a control signal, and the heating means
Storage means for storing an output mode for controlling the heating means, selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means, and ON / OFF of the heating means according to the output mode of the storage means. It has an output means for controlling.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using an incompatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the four-way valve has an operation mode detecting means for detecting and outputting an operation mode, and an indoor fan for the indoor heat exchanger. Indoor fan rotation speed detection means for detecting and outputting the rotation speed of the control means and the indoor fan; outdoor fan rotation speed detection means for detecting and outputting the rotation speed of the outdoor fan control means and the outdoor fan to the outdoor heat exchanger; A compressor temperature detecting means for detecting and outputting the temperature of the compressor and a compressor internal pressure detecting means for detecting and outputting the pressure inside the compressor are installed, and detected by the internal pressure detecting means during each operation of cooling and heating. Computation means for computing and outputting the saturation temperature of the refrigerant from the value, and comparison means for comparing the value output by the computation means and the value detected by the compressor temperature detection means and outputting a control signal, The above A storage unit that stores an output mode for controlling the rotational speeds of the internal fan and the outdoor fan, a selection unit that selects one of the output modes of the storage unit according to a control signal generated from the comparison unit, and an output of the storage unit. It has an output means for controlling the rotational speeds of the indoor fan and the outdoor fan according to the mode.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using an incompatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a decompressor, and an indoor heat exchanger are connected in a ring to form a refrigerant circuit, and an operation mode detecting means for detecting and outputting an operation mode to the four-way valve, an outdoor fan to the outdoor heat exchanger. Control means and outdoor fan rotation speed detecting means for detecting and outputting the rotation speed of the outdoor fan, compressor temperature detecting means for detecting and outputting the temperature of the compressor to the compressor, and detecting and outputting the pressure inside the compressor The compressor pressure detecting means is installed, and the calculating means for calculating and outputting the saturation temperature of the refrigerant from the value detected by the compressor pressure detecting means during each operation of cooling and heating, and the value output by the calculating means. And a comparison means for comparing a value detected by the compressor temperature detection means and outputting a control signal, a storage means for storing an output mode for controlling the rotation speed of the outdoor fan, and a control signal generated by the comparison means. Selection means for selecting one of the output modes of the memory means Ri, and has an output means for controlling the rotational speed of the outdoor fan in accordance with the output mode of the storage means.

Further, another control device for a refrigerating apparatus of the present invention is a compressor using an incompatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and an operating frequency detecting means for detecting and outputting a compressor operating frequency is output to the compressor. A compressor temperature detecting means for detecting and outputting, and a compressor internal pressure detecting means for detecting and outputting the pressure in the compressor are installed, and a refrigerant from a value detected by the compressor internal pressure detecting means during each operation of cooling and heating. Operating means for calculating and outputting the saturation temperature of the compressor, comparing means for comparing the value output by the operating means with the value detected by the compressor temperature detecting means, and outputting a control signal. Storage means for storing an output mode for controlling the frequency, selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means, and operation of the compressor according to the output mode of the storage means. Those having an output means for controlling the frequency.

Further, another control device for a refrigerating machine of the present invention is a compressor using a non-compatible refrigerating machine oil as a refrigerant, a four-way valve,
An outdoor heat exchanger, a decompressor, a refrigerant circuit configured by annularly connecting the indoor heat exchanger, a compressor temperature detecting means for detecting and outputting the temperature of the compressor, detecting the pressure in the compressor. The compressor internal pressure detecting means for outputting, the opening detecting means for detecting and outputting the opening degree of the pressure reducer are installed, and the saturation temperature of the refrigerant from the value detected by the internal pressure detecting means during each operation of cooling and heating. Calculating means for calculating and outputting, and comparing means for comparing the value output by the calculating means with the value detected by the compressor temperature detecting means and outputting a control signal,
According to an output mode of the storage unit, a storage unit that stores an output mode for controlling the opening degree of the pressure reducer, a selection unit that selects one of the output modes of the storage unit according to a control signal generated from the comparison unit, and an output mode of the storage unit. It has an output means for controlling the opening degree of the pressure reducer.

Further, another control device for a refrigerating apparatus of the present invention has a refrigerating machine oil suction port at a lower portion of a compressor using refrigerating machine oil incompatible with a refrigerant, and further, at a lower portion of the compressor. It has a heating means for locally heating.

[0017]

The present invention has the following actions due to the above means.

That is, the first output means compares the outside air temperature detected by the outside air temperature detecting means with a set value and outputs a control signal, and compares the value output from the heating time detecting means with the set value. By having the second comparison means that outputs a control signal and the heating means, when the outside air temperature decreases, the refrigerant condenses and liquefies in the compressor, and the refrigerant and refrigerating machine oil are separated into two phases (do not mix). Under the condition that is considered to be, the heater heater is turned on to heat the compressor to evaporate the condensed and liquefied refrigerant, and damage due to poor lubrication due to the liquid refrigerant flowing into the sliding part of the compressor at startup. It is possible to prevent this, and to realize the optimal start-up operation.

Further, the value output from the heating time detecting means and the first comparing means for comparing the outside air temperature detected by the outside air temperature detecting means with the set value and outputting the control signal are compared with the set value. By having the second comparison means for outputting a control signal, the heater heating means, the indoor fan control means, and the outdoor fan control means, when the outside air temperature decreases, the refrigerant condenses and liquefies in the compressor, and the refrigerant and the freezing Under conditions where the machine oil is considered to be in a two-phase separated (not melted) state, the heater heater is turned on to heat the compressor, causing the condensed and liquefied refrigerant to evaporate and be expelled to the outside of the compressor to heat the heater. Turn on the unit and turn on the indoor or outdoor fan at the same time.
By N, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and the damage due to poor lubrication due to the liquid refrigerant flowing into the compressor sliding portion at the time of start-up can be prevented, which is optimal. It is possible to realize the operation at startup.

Further, the first comparison means for comparing the outside air temperature detected by the outside air temperature detecting means with a plurality of set values and outputting a control signal, the value output from the heating time detecting means and the set value are compared. By having a second comparing means for outputting a control signal, a heating means, an indoor fan control means, and an outdoor fan control means, when the outside air temperature decreases, the refrigerant is condensed and liquefied in the compressor, and Under conditions where the refrigerator oil is considered to be in a two-phase separated (not melted) state, the heater heater is turned on and the time for heating the compressor is changed with respect to the outside air temperature, so that the condensed and liquefied refrigerant can be efficiently discharged. Evaporate it to the outside of the compressor, and simultaneously turn on the heater heater and turn on the indoor fan and outdoor fan to quickly condense the evaporated refrigerant to the indoor heat exchanger and the outdoor heat exchanger. Can prevent damage due to lubrication failure due to flow into the compressor sliding parts of the liquid refrigerant during startup, it is possible to realize the operation of the optimum start time.

Also, the value output from the heating time detecting means and the first comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the set value and outputting a control signal are compared with the set value. By having the second comparison means for outputting a control signal, and the heating means, the indoor fan control means, the outdoor fan control means, when the compressor temperature is reduced, the refrigerant is condensed and liquefied in the compressor, Under the condition that the oil and the refrigerating machine oil are considered to be in a two-phase separated state (do not melt), by turning on the heater heater to heat the compressor,
By evaporating the condensed and liquefied refrigerant to the outside of the compressor and turning on the indoor fan and the outdoor fan at the same time, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger. It is possible to prevent damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor, and to realize an optimal start-up operation.

Further, comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature of the compressor internal pressure output from the calculating means and outputting a control signal, heating means, indoor fan control means, By including the outdoor fan control means, when the temperature of the compressor is lowered, the refrigerant is condensed and liquefied in the compressor, and under the condition that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state, By turning on the heater and heating the compressor, the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor. By turning on the heater and the indoor fan and the outdoor fan at the same time, the evaporated refrigerant is quickly discharged. Can be condensed in the indoor heat exchanger and the outdoor heat exchanger to prevent damage due to poor lubrication due to liquid refrigerant flowing into the sliding parts of the compressor at startup, It is possible to achieve the realization of the rolling.

Further, by providing a heating means and a comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature of the compressor internal pressure output from the calculating means and outputting a control signal. When the temperature of the compressor drops during cooling, the refrigerant is condensed and liquefied in the compressor, and under the condition that the refrigerant and the refrigerating machine oil are separated into two phases (do not melt), turn on the heater heater and compress By heating the machine, the condensed and liquefied refrigerant is evaporated and driven out of the compressor, preventing damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor during operation, and realizes optimal operation. Can be achieved.

Further, comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature of the compressor internal pressure output from the calculating means and outputting a control signal, an operating mode detecting means, and an indoor fan control. By having a means and an outdoor fan control means, when the compressor temperature drops during operation, it is confirmed whether the heating operation or the cooling operation is performed by turning the four-way valve ON and OFF. UP
To improve the capacity, DOWN the indoor fan speed to reduce the capacity, and in the case of cooling operation, DOWN the outdoor fan speed to decrease the capacity to increase the indoor fan speed.
By increasing the internal pressure of the compressor and increasing the temperature of the compressor by improving the capacity, the refrigerant is condensed and liquefied in the compressor, and the refrigerant and refrigerating machine oil are in a two-phase separated (not melted) state. Under conceivable conditions, the condensed and liquefied refrigerant is evaporated and driven out of the compressor to prevent damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor during operation, aiming to realize optimal operation. be able to.

Further, it has a comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature output from the calculating means and outputting a control signal, an operating mode detecting means, and an outdoor fan controlling means. Then, when the compressor temperature drops during operation, check the heating operation or cooling operation by turning the four-way valve on and off. In the heating operation, the outdoor fan rotation speed is DOWN, and in the cooling operation, the outdoor fan. It is considered that the refrigerant is condensed and liquefied in the compressor by increasing the internal pressure of the compressor and the temperature of the compressor by increasing the rotation speed, and the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state. Under the conditions, the condensed and liquefied refrigerant is evaporated and driven out of the compressor to prevent damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor during operation. Rolling implementation can be achieved.

Further, by having a comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature output from the calculating means and outputting a control signal, and an operating frequency detecting means, the operating frequency is detected during operation. Under conditions where the refrigerant is condensed and liquefied in the compressor when the compressor temperature drops and the refrigerant and refrigerating machine oil are in two-phase separation (do not melt), increase the operating frequency of the compressor By raising the temperature of the compressor as the internal pressure rises, the condensed and liquefied refrigerant is evaporated and driven out of the compressor, preventing damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor during operation. Therefore, it is possible to realize the operation in the optimum state.

In addition, by having a valve opening detecting means and a comparing means for comparing the compressor temperature detected by the compressor temperature detecting means with the saturation temperature output from the calculating means and outputting a control signal, When the compressor temperature decreases, the refrigerant is condensed and liquefied in the compressor, and under the condition that the refrigerant and the refrigerating machine oil are separated into two phases (do not melt), the valve opening degree of the electric expansion valve is changed. By squeezing the pressure inside the compressor and raising the temperature of the compressor, the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor, causing poor lubrication due to liquid refrigerant flowing into the sliding parts of the compressor during operation. It is possible to prevent the damage due to, and to realize the operation in the optimum state.

Further, by having a suction port for the refrigerating machine oil in the lower part of the compressor using refrigerating machine oil which is incompatible with the refrigerant, and having heating means for locally heating the lower part of the compressor,
When the compressor temperature is lowered and the refrigerant is condensed and liquefied inside the compressor, it stays at the bottom of the compressor together with the refrigerating machine oil, so that the heating of the compressor is limited to the bottom, so that the more effectively generated liquid refrigerant is generated. It can be vaporized and removed, so that the liquid refrigerant can be more reliably prevented from directly flowing into the compressor suction port.

[0029]

EXAMPLES Examples of the present invention will be described below with reference to FIGS.

FIG. 1 is a refrigeration cycle diagram in the first embodiment of the present invention. In the figure, 1 is a compressor, 2 is a four-way valve, 3 is an outdoor heat exchanger, 4 is a decompressor, and 5 is an indoor heat exchanger, and these are sequentially connected in an annular shape. 6 is a heater heater that heats the compressor, 7 is an outside air temperature detector that detects the outside air temperature, and 6a is a heating time detector that detects the heating time of the heater heater 6. Reference numeral 9 denotes a microcomputer (hereinafter referred to as an LSI), which has an input circuit 20, C
It has a PU 21, a memory 22, and an output circuit 23. The output of the heating time detector 6a and the output of the outside air temperature detector 7 are input to the input circuit 20 through the A / D converter 8, and the output of the output circuit 23 turns the heater / heater 6 ON / OFF.
Control.

The block diagram shown in FIG. 3 and the electronic control circuit diagram shown in FIG. 2 will now be described. The outside air temperature detector 7 of FIG. 2 is an outside air temperature detecting means for detecting and outputting the outside air temperature, and compares the value detected by the outside air temperature detecting means with the set value in the memory of the LSI 9 of FIG. An output mode for controlling ON / OFF of the heater heater 6, a first comparing means for outputting, a second comparing means for comparing the value detected by the heating time detecting means with a set value and outputting a control signal. It corresponds to selection means for selecting one of the output modes of the storage means by means of the storage means that has stored therein and the output signals generated from the first and second comparison means. In the above-mentioned configuration, the configuration and operation of the control circuit before starting the operation of the refrigeration system are shown in FIG.
Will be explained with reference. FIG. 4 is a flowchart showing a program of the refrigerating apparatus stored in the memory 22 of the LSI 9. As can be seen from this flowchart, in the present invention, when the outside air temperature decreases, the refrigerant condenses and liquefies in the compressor, and the refrigerant and refrigerating machine oil are separated into two phases (do not melt).
ON / OFF of the heater / heater 6 is controlled only under the condition considered to be the state.

In the state in which the refrigeration system is stopped before the operation, step 30 in FIG. 4 is executed and the timer measurement t =
After resetting to 0 and proceeding to step 31, after the outside air temperature Tg is detected by the outside air temperature detector, in step 32, by comparison calculation of the outside air temperature Tg and the set temperature T1 (example: 20 degrees), Tg <T1 If there is, a “YES” determination is made and the operation proceeds to step 33. If Tg> T1, a "NO" determination is made and the process returns to step 30. In step 33, the first output mode of the storage circuit is selected by the selection means built in the memory 22, the control signal is output by the output circuit 23 and the heater heater 6 is turned on, and the process proceeds to step 34 where the heating time detector detects the time. Step 3 after t is detected
At 5, the comparison calculation of the heating time t and the set time t1 (for example, 10 minutes) makes a determination of “YES” if t> t1, and the process proceeds to step 36. If t <t1, a "NO" determination is made and the process returns to step 34. In step 36, the timer measurement t = 0 is reset, in step 37 the second output mode of the memory circuit is selected by the selection means built in the memory 22, the control signal is output by the output circuit 23, and the heater heater 6 is turned off. In step 38, the timer measurement is performed again, and in step 39, if t> t2 by the comparison operation of the measurement time t and the set time t2 (for example, 5 minutes), it is determined as “YES”, and in step 30, t <
If t2, a "NO" determination is made and the process returns to step 38.

That is, it is judged whether or not the refrigerant is condensed and liquefied in the compressor and the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state, and the ON / OFF control of the heater / heater is determined. In step 39, the heater heater is set so as not to be continuously turned on without meaning.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the outside air temperature is lowered, the refrigerant is condensed and liquefied in the compressor, and the refrigerant and the refrigerating machine oil are separated into two phases (do not melt). ) Condition, the heater heater is turned on to heat the compressor to evaporate the condensed and liquefied refrigerant, causing poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor at startup. It is possible to prevent the damage due to, and to realize the optimal operation at the time of startup and the refrigeration cycle control.

Next, a second embodiment of the present invention will be described with reference to FIGS. 1 and 5-7. The refrigeration cycle diagram in the second embodiment of the present invention is the same as that in the first embodiment.
The difference from the first embodiment is that the indoor and outdoor fans of the indoor heat exchanger 5 and the outdoor heat exchanger 3 shown in the electronic control circuit diagram of FIG. 5 are turned on / off.

The structure and operation of the control circuit before the activation of the refrigeration system will be described with reference to FIG. FIG. 7 is a flow chart showing a program of the refrigeration apparatus stored in the memory 22 of the LSI 9. As you can see from this flowchart,
In the present invention, when the outside air temperature is reduced, the refrigerant is condensed and liquefied in the compressor, and the heater and the heater heater 6 are considered to be in a two-phase separated (non-melting) state between the refrigerant and the refrigerating machine oil, ON / OFF of the indoor fan 16 and the outdoor fan 17 is controlled.

In the state in which the refrigeration system is stopped before the operation, step 40 of FIG. 7 is executed and the timer measurement t =
After being reset to 0 and proceeding to step 41, the outside air temperature Tg is detected by the outside air temperature detector, and then in step 42, by comparison calculation between the outside air temperature Tg and the set temperature T1 (example: 20 degrees), Tg <T1 If there is, a “YES” determination is made and the process proceeds to step 43. If Tg> T1, a "NO" determination is made and the process returns to step 40. Steps 43 and 44
Then, the first output mode, the third output mode, and the fifth output mode of the storage circuit are selected by the selection means built in the memory 22, and the control signal is output by the output circuit 23 to output the heater heater 6 and the indoor fan 16 to each other. The outdoor fan 17 is turned on, the process proceeds to step 45, the timer is measured, and step 4
At t6, if t> t1, a determination of "YES" is made by comparing the measured time t with the set time t1 (example: 10 minutes), and the routine proceeds to step 47. If t <t1, “NO”
Is determined and the process returns to step 45. At step 47, the timer measurement t = 0 is reset and the process proceeds to steps 48 and 49. At steps 48 and 49, the second output mode, the fourth output mode and the sixth output mode of the memory circuit are selected by the selection means incorporated in the memory 22. Is selected, the control signal is output by the output circuit 23, the heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned off, the process proceeds to step 50, the timer is measured, and the measured time t and the set time t2 (example: : 5 minutes), if t> t2, a determination of “YES” is made and t <t
If it is 2, a "NO" determination is made and the process returns to step 50.

The intention of the steps will be described. That is, the refrigerant is condensed and liquefied in the compressor, and it is determined whether the refrigerant and the refrigerating machine oil are in a two-phase separated state (do not melt), and the ON / OFF control of the heater heater, indoor fan, and outdoor fan is determined. Further, in step 51, the heater heater, the indoor fan, and the outdoor fan are set so as not to be continuously turned on without meaning.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the outside air temperature is lowered, the refrigerant is condensed and liquefied in the compressor, and the refrigerant and the refrigerating machine oil are separated into two phases (do not mix). ) Condition, the heater heater is turned on to heat the compressor to evaporate the condensed and liquefied refrigerant and drive it out of the compressor. At the same time when the heater heater is turned on, the indoor fan and the outdoor By turning on the fan, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and the damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor at startup can be prevented. It is possible to realize the optimal start-up operation and refrigeration cycle control.

Next, a third embodiment of the present invention will be described with reference to FIGS. 1, 5, 6 and 8. The refrigeration cycle diagram in the third embodiment of the present invention is the same as in the first and second embodiments. The second embodiment is different from the second embodiment in that the temperature set value and the time set value shown in the block diagram of FIG. 6 are set separately, and the heater heater 6, the indoor heat exchanger 5, and the outdoor are set depending on the difference in the outside air temperature. ON / OF the indoor and outdoor fans of each heat exchanger 3
That is, the time that F controls is changed.

The configuration and operation of the control circuit before the start of operation of the refrigeration system will be described with reference to FIG. FIG. 8 is a flow chart showing a program of the refrigeration apparatus stored in the memory 22 of the LSI 9. As you can see from this flowchart,
In the present invention, when the outside air temperature is reduced, the refrigerant is condensed and liquefied in the compressor, and the heater and the heater heater 6 are considered to be in a two-phase separated (non-melting) state between the refrigerant and the refrigerating machine oil, The ON / OFF time of the indoor fan 16 and the outdoor fan 17 is controlled.

In the state in which the refrigeration system is stopped before the operation, step 60 in FIG. 8 is executed and the timer measurement t =
After being reset to 0 and proceeding to step 61, the outside air temperature Tg is detected by the outside air temperature detector, and then in step 62, the comparison operation between the outside air temperature Tg and the set temperature T1 (example: 20 degrees) is performed, and Tg <T1 If there is, a “YES” determination is made and the operation proceeds to step 63. If Tg> T1, a "NO" determination is made and control proceeds to step 67.

In step 67, the first output mode, the third output mode and the fifth output mode of the storage circuit are selected by the selection means built in the memory 22, and the output circuit 23 outputs a control signal to output the heater heater 6. Then, the indoor fan 16 and the outdoor fan 17 are turned on, the process proceeds to step 68, the timer measurement is performed, and in step 69, if t> t1 by comparison calculation of the measured time t and the set time t1 (example: 10 minutes), "YES". Is determined and the process proceeds to steps 70 and 71. If t <t1, a determination of "NO" is made and the process returns to step 68. In steps 70 and 71, the second output mode, the fourth output mode, and the sixth output mode of the storage circuit are selected by the selection means built in the memory 22, and the output circuit 23
Then, a control signal is output, the heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned off, and the process proceeds to step 72.

In step 63, the outside air temperature Tg is compared with the set temperature T2 (for example, 10 degrees), and if Tg <T2, a "YES" determination is made and the routine proceeds to step 64.
If Tg> T2, a "NO" determination is made and step 7
Go to 4. In step 74, the first output mode, the third output mode and the fifth output mode of the storage circuit are selected by the selection means built in the memory 22, and the control signal is output by the output circuit 23 to output the heater heater 6 and the indoor fan. 16 and the outdoor fan 17 are turned on, the process proceeds to step 75, the timer measurement is performed, and in step 76, if t> t3, it is determined as “YES” by the comparison calculation of the measured time t and the set time t3 (for example, 20 minutes). Then, the process proceeds to steps 77 and 78, and if t <t3, a "NO" determination is made and the process returns to step 75. In steps 77 and 78, the second output mode, the fourth output mode, and the sixth output mode of the storage circuit are selected by the selection means built in the memory 22, and the output circuit 23
Then, a control signal is output, the heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned off, and the process proceeds to step 72.

At step 64, a comparison operation between the outside air temperature Tg and the set temperature T3 (for example, 0 degree) makes a "YES" determination if Tg <T3, and the routine proceeds to steps 65 and 66, where the first output mode is set. After the third output mode and the fifth output mode are selected, the output circuit 23 outputs a control signal to turn on the heater heater 6, the indoor fan 16, and the outdoor fan 17, and then the process returns to step 60. T at step 64
If g> T3, a "NO" determination is made and step 79
Proceed to. In step 79, the first output mode, the third output mode and the fifth output mode of the storage circuit are selected by the selection means built in the memory 22, and the control signal is output by the output circuit 23 to output the heater heater 6 and the indoor fan. 16 and the outdoor fan 17 are turned on, the process proceeds to step 80, the timer is measured, and the measured time t and the set time t are calculated in step 81.
If t> t3 by the comparison calculation of 3 (for example, 20 minutes), the determination of “YES” is made, and the process proceeds to steps 82 and 83,
If t <t3, "NO" is determined and step 80 is performed.
Return to In steps 82 and 83, the second output mode, the fourth output mode and the sixth output mode of the memory circuit are selected by the selection means built in the memory 22, and the output circuit 23 outputs the control signal to the heater / heater 6. Indoor fan 16
Then, the outdoor fan 17 is turned off and the routine proceeds to step 72.

In step 72, the timer measurement is performed. In step 73, the measurement time t and the set time t2 (for example, 5
If t> t2, the determination of “YES” is made by the comparison operation of (min), and if t <t2, then “N” is determined.
The determination of "O" is made, and the process returns to step 72.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the outside air temperature is lowered, the refrigerant is condensed and liquefied in the compressor, and the refrigerant and the refrigerating machine oil are separated into two phases (do not mix). ) Condition, the heater heater is turned on and the time for heating the compressor is changed with respect to the outside air temperature, so that the condensed and liquefied refrigerant is efficiently evaporated and discharged to the outside of the compressor. By turning on the indoor fan and the outdoor fan at the same time as turning on the heater, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and the liquid refrigerant compressor slides at startup. It is possible to prevent damage due to poor lubrication due to inflow, and to realize optimal start-up operation and refrigeration cycle control.

Next, a fourth embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a refrigeration cycle diagram in the fourth embodiment of the present invention. The difference from the second embodiment is that a compressor temperature detector 10 that detects and outputs the compressor temperature is used instead of the outside air temperature detector 7 and the heating time detector 6a.

In the present invention, the refrigerant is condensed and liquefied in the compressor when the temperature of the compressor is lowered, and only under the condition that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state. The heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned on / off.

In the state where the refrigeration system is not in operation before operation, step 90 in FIG. 12 is executed, and the compressor temperature Ts is detected by the compressor temperature detector 10, and then the compressor temperature Ts is set in step 91. Set temperature T4 (Example: 25 degrees)
If Ts <T4, a “YES” determination is made by the comparison calculation with and the process proceeds to steps 92 and 93. If Ts> T4, a "NO" determination is made and control returns to step 90. In steps 92 and 93, the first output mode, the third output mode and the fifth output mode of the memory circuit are selected by the selection means built in the memory 22, and the output circuit 23 outputs the control signal to the heater / heater 6. The indoor fan 16 and the outdoor fan 17 are turned on and the routine proceeds to step 94.

After the compressor temperature Ts is detected by the compressor temperature detector 10 in step 94, in step 95, Ts> T4 + α is calculated by comparing the compressor temperature Ts with the set temperature T4 + α (eg, 30 degrees). If there is, a determination of "YES" is made and it is determined that the two-phase separation state is established, and step 9
Proceed to 6, 97. If Ts <T4 + α, a “NO” determination is made and it is determined that the two-phase separation state is established, and step 94
Return to

In steps 96 and 97, the heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned off, and the process returns to step 90.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the refrigerant is condensed and liquefied in the compressor, and the refrigerant and the refrigerating machine oil are separated into two phases (melting together). In the condition that is considered to be the (no) state, the heater heater is turned on to heat the compressor, thereby reliably evaporating the condensed and liquefied refrigerant without being affected by the change in the outside air temperature, and expelling it outside the compressor. By turning on the indoor fan and the outdoor fan at the same time as the heater heater, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and the liquid refrigerant compressor slides at startup. It is possible to prevent damage due to poor lubrication due to inflow, and to realize optimal start-up operation and refrigeration cycle control.

Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 13 is a refrigeration cycle diagram in the fifth embodiment of the present invention. What is different from the fourth embodiment is the in-compressor pressure detection means that the in-compressor pressure detector 11 detects and outputs the pressure in the compressor, and from the value output from the in-compressor pressure detection means in the memory 22,
That is, the saturation temperature was calculated.

In the present invention, when the temperature of the compressor is lowered, the refrigerant and the refrigerating machine oil are separated into two phases (not melted) by comparing the saturation temperature with the refrigerant temperature and the refrigerant temperature.
It detects whether it is in a state.

In the state where the refrigeration system is not in operation before operation, step 100 of FIG. 16 is executed, and after the compressor temperature Ts is detected by the compressor temperature detector 10, the process proceeds to step 101, and the pressure in the compressor is increased. The pressure Ps in the compressor is output by the detector 11, and in step 102 the CPU 2
After the saturation temperature Tw at the pressure Ps is calculated by 1, the process proceeds to step 103, in which the compressor temperature Tw is calculated.
If Ts <Tw is determined by the comparison calculation between s and the saturation constant temperature Tw, a determination of “YES” is made and steps 104 and 10 are performed.
Go to 5. If Ts> Tw, a "NO" determination is made and the process returns to step 100. In steps 104 and 105, the first output mode, the third output mode and the fifth output mode of the storage circuit are selected by the selection means built in the memory 22, and the output circuit 23 outputs the control signal to the heater / heater 6. The indoor fan 16 and the outdoor fan 17 are turned on, and similarly, the process proceeds to steps 106, 107 and 108, and after the compressor temperature Ts and the saturation temperature Tw at the pressure Ps in the compressor are calculated, the process proceeds to step 109 and step 109. Then, by comparing the compressor temperature Ts with the saturated constant temperature Tw, T
If s> Tw + α, a “YES” determination is made and the routine proceeds to steps 110 and 111. If Ts <Tw + α, then “N
The determination of "O" is made, and the process returns to step 106. Step 1
In 10 and 111, the heater heater 6, the indoor fan 16, and the outdoor fan 17 are turned off, and the process returns to step 100.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably determine whether or not is in a two-phase separated state (does not melt), and by turning on the heater heater and heating the compressor, the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor. By turning on the indoor fan and the outdoor fan at the same time as turning on the heater, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and the liquid refrigerant compressor slides at startup. It is possible to prevent damage due to poor lubrication due to inflow, and to realize optimal start-up operation and refrigeration cycle control.

Next, a sixth embodiment of the present invention will be described with reference to FIGS. The sixth embodiment of the present invention is the same as the refrigeration cycle diagram of the fifth embodiment.

The difference from the fifth embodiment is in the control during operation of the refrigeration system, and when the refrigerant and the refrigeration oil are in a two-phase separation (do not melt) state during operation, the heater heater It's just something you try to avoid.

In the present invention, when the temperature of the compressor is lowered, it is considered that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state from the saturation temperature of the compressor and the temperature of the refrigerant. ON / OFF of heater / heater 6 only
Control F.

While the refrigeration system is in operation, step 120 in FIG. 17 is executed, and the compressor temperature Ts is detected by the compressor temperature detector 10. After that, the process proceeds to step 121, and the compressor internal pressure detector 11 is used. Pressure P in the compressor
After s is output and the saturation temperature Tw at the pressure Ps is calculated in step 122, the process proceeds to step 123, and in step 123, if Ts <Tw is calculated by the comparison calculation between the compressor temperature Ts and the saturation constant temperature Tw. The determination of "YES" is made and the routine proceeds to step 124. If Ts> Tw, “NO”
Is determined and the process returns to step 120. Step 124
Then, the first output mode of the storage circuit is selected by the selection means built in the memory 22, the control signal is output by the output circuit 23, and the heater / heater 6 is turned on.
25, 126 and 127, the compressor temperature Ts and the saturation temperature Tw at the pressure Ps in the compressor are calculated, and then the routine proceeds to step 128, where the comparison calculation of the compressor temperature Ts and the saturation constant temperature Tw is performed at step 28. Thus, if Ts> Tw + α, a “YES” determination is made and the operation proceeds to step 129.
If Ts <Tw + α, a “NO” determination is made and the process returns to step 125. In step 129, the heater heater 6 is turned off and the process returns to step 120.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably judge whether or not the refrigerant is in a two-phase separation (does not mix) state, and it is possible to reliably judge whether the refrigerant and refrigeration oil are in a two-phase separation (do not melt) inside the compressor, and the refrigerating machine operation Even in the middle state, by turning on the heater heater to heat the compressor, the condensed and liquefied refrigerant is evaporated and driven out of the compressor, and the liquid refrigerant in operation flows into the compressor sliding part. It is possible to prevent damage due to poor lubrication due to, and to realize optimal operation and refrigeration cycle control.

Next, a seventh embodiment of the present invention will be described with reference to FIGS. The seventh embodiment of the present invention is the same as the refrigeration cycle diagram of the fifth, sixth and fifth embodiments. The difference from the sixth embodiment is that the indoor fan 1 shown in the electronic control circuit diagram of FIG.
6 and the outdoor fan 17 are controlled.

In the present invention, when the temperature of the compressor is lowered, it is considered that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state from the saturation temperature of the compressor and the temperature of the refrigerant. The indoor fan 16 and the outdoor fan 17 are controlled only at.

While the refrigeration system is in operation, step 130 in FIG. 18 is executed, and the compressor temperature Ts is detected by the compressor temperature detector 10. Then, the process proceeds to step 131, where the compressor internal pressure detector 11 is used. Pressure P in the compressor
s is output, and the saturation temperature Tw at the pressure Ps is calculated in step 132. Then, the process proceeds to step 133, and in step 133, if Ts <Tw by the comparison calculation of the compressor temperature Ts and the saturation constant temperature Tw. The determination of “YES” is made, and the process proceeds to step 134. If Ts> Tw, “NO”
Is determined and the process returns to step 130. Step 13
In Nos. 4 and 135, the rotation speed Fn of the indoor fan 16 is determined by the indoor fan rotation speed detector 12 and the outdoor fan rotation speed detector 13.
And the rotation speed Fg of the outdoor fan 17 is detected, and step 1
Proceeding to 36, the operation mode detector 24 causes the O of the four-way valve 2 to
If N / OFF is detected, and the four-way valve 2 = ON is determined in step 137, a “YES” determination is made and the process proceeds to step 138. In step 138, it is determined that the heating operation is performed, and the process proceeds to step 139. If the four-way valve 2 = OFF, a "NO" determination is made and control proceeds to step 140, and it is determined that the cooling operation is in progress, and control proceeds to step 141. Step 1
In 39, the output circuit 23 causes the rotation speed Fn1 = Fn-β (example: β = 200 rpm) of the indoor fan 16 to be DOWN.
Then, the rotation speed of the outdoor fan 17 Fg1 = Fg + ε1 (Example:
ε1 = 150 rpm) and the process proceeds to step 142. In step 141, as in step 139,
By the output circuit 23, the rotation speed Fn1 of the indoor fan 16 =
UP to Fn + β (example: β = 200 rpm), and the rotation speed of the outdoor fan 17 Fg1 = Fg−ε1 (example: ε1 = 150)
rpm) and proceed to step 142. After the compressor temperature Ts and the saturation temperature Tw at the pressure Ps in the compressor are calculated in steps 142, 143, and 144, the process proceeds to step 145, and in step 145, the compressor temperature Ts.
And the saturation constant temperature Tw are compared, Ts> Tw + α
If so, a determination of "YES" is made and the process proceeds to step 146. If Ts <Tw + α, a “NO” determination is made and the process returns to step 142. In step 146, the indoor fan 1
The rotation speed Fn1 of 6 returns to the initial rotation speed Fn, the rotation speed Fg1 of the outdoor fan 17 returns to the initial rotation speed Fg, and the process returns to step 130.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably judge whether or not the refrigerant is in a two-phase separation (does not mix) state, and it is possible to reliably judge whether the refrigerant and refrigeration oil are in a two-phase separation (do not melt) inside the compressor, and the refrigerating machine operation Even in the middle state, the temperature of the compressor is raised by changing the rotation speed of the indoor fan and the outdoor fan, and the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor to compress the liquid refrigerant during operation. It is possible to prevent damage due to poor lubrication due to flowing into the sliding parts of the machine, and to realize optimum operation and refrigeration cycle control.

Next, an eighth embodiment of the present invention will be described with reference to FIGS. 13, 15, 19 and 20. The eighth embodiment of the present invention is the same as the refrigeration cycle diagram of the fifth, sixth and seventh embodiments. The difference from the seventh embodiment is that only the outdoor fan 17 shown in the electronic control circuit diagram of FIG. 19 is controlled for the control during the operation of the refrigeration system.

In the present invention, when the temperature of the compressor is lowered, it is considered that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state from the saturation temperature of the compressor and the temperature of the refrigerant. At, only the outdoor fan 17 is controlled.

Since the eighth embodiment of the present invention is almost the same as the refrigeration system program of the seventh embodiment, FIG. 20 of the flowchart of the refrigeration system program of the eighth embodiment of the present invention is shown.
Among them, only steps different from those of the refrigeration system program of the seventh embodiment will be described.

The steps in FIG. 20 different from the seventh embodiment are steps 154 and 158, 160, 165.
Is. First, in step 154, the outdoor fan rotation speed detector 13 detects only the rotation speed Fg of the outdoor fan 17, and in step 158, the rotation speed Fg of the outdoor fan 17 is detected.
2 = Fg + ε2 (example: ε2 = 250 rpm), and the process proceeds to step 161. Further, in step 160, as in step 158, the rotation speed Fg2 of the outdoor fan 17 = F
DOWN is performed to g-ε2 (eg, ε2 = 250 rpm), and the process proceeds to step 161. In step 165, the rotation speed Fg2 of the outdoor fan 17 is returned to the initial rotation speed Fg, and the process returns to step 150.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature decreases, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably judge whether or not the refrigerant is in a two-phase separation (does not mix) state, and it is possible to reliably judge whether the refrigerant and refrigeration oil are in a two-phase separation (do not melt) inside the compressor, and the refrigerating machine operation Even in the medium state, the temperature of the compressor is raised by changing the rotation speed of only the outdoor fan without changing the rotation speed of the indoor fan, and the condensed liquefied refrigerant is evaporated without impairing indoor comfort. It is possible to prevent damage due to poor lubrication caused by the liquid refrigerant flowing out of the compressor to flow into the sliding parts of the compressor during operation, and to realize optimal operation and refrigeration cycle control.

Next, a ninth embodiment of the present invention will be described with reference to FIGS. The ninth embodiment of the present invention is the same as the refrigeration cycle diagram of the fifth, sixth, seventh and eighth embodiments. The difference from the eighth embodiment is that only the frequency of the compressor motor 18 shown in the electronic control circuit diagram of FIG. 19 is controlled for the control during operation of the refrigeration system.

In the present invention, when the temperature of the compressor is lowered, it is considered that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state from the saturation temperature of the compressor and the temperature of the refrigerant. In, only the frequency of the compressor motor 18 is controlled.

21 is executed and the compressor temperature detector 10 detects the compressor temperature Ts, the routine proceeds to step 171, where the in-compressor pressure detector 11 detects the compressor temperature Ts. Pressure P in the compressor
s is output, and the saturation temperature Tw at the pressure Ps is calculated in step 172, and then the process proceeds to step 173. In step 173, if Ts <Tw, the compressor temperature Ts is compared with the saturation constant temperature Tw. The judgment of "YES" is made and it progresses to step 174. If Ts> Tw, "N
The determination of "O" is made, and the process returns to step 170. Step 1
At 74, by the compressor operating frequency detector 14,
The operating frequency f of the compressor motor 18 is detected, and the process proceeds to step 175. At step 175, the output circuit 23 sets the operating frequency fa = f + δ (example: δ = 20 Hz) to U.
P, go to step 176, steps 176, 17
7, 178, the compressor temperature Ts and the pressure Ps in the compressor
After the saturation temperature Tw is calculated in step 179, the process proceeds to step 179. In step 179, the compressor temperature Ts and the saturation constant temperature T
If Ts> Tw + α by comparison with w, then “YE
The determination of "S" is made, and the routine proceeds to step 180. Ts <Tw
If it is + α, a “NO” determination is made and the process returns to step 176. In step 180, the operating frequency fa of the compressor motor 18 is restored to the initial operating frequency f, and step 170
Return to

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably judge whether or not the refrigerant is in a two-phase separation (does not mix) state, and it is possible to reliably judge whether the refrigerant and refrigeration oil are in a two-phase separation (do not melt) inside the compressor, and the refrigerating machine operation Even in the middle condition, the temperature of the compressor is raised by changing the operating frequency of the compressor, and the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor. It is possible to prevent damage due to poor lubrication due to flowing into the moving part, and realize optimal operation and refrigeration cycle control.

Next, the tenth embodiment of the present invention will be described.
Description will be made with reference to FIGS. The tenth embodiment of the present invention is the same as the refrigeration cycle diagram of the fifth, sixth, seventh, eighth and ninth embodiments. The difference from the ninth embodiment is that only the valve opening degree of the expansion valve 19 shown in the electronic control circuit diagram of FIG. 19 is controlled for the control during the operation of the refrigeration system.

In the present invention, when the temperature of the compressor is lowered, it is considered that the refrigerant and the refrigerating machine oil are in a two-phase separated (not melted) state from the saturation temperature of the compressor and the temperature of the refrigerant. At, only the valve opening of the expansion valve 19 is controlled. Since the tenth embodiment of the present invention is substantially the same as the refrigeration system program of the ninth embodiment, the ninth embodiment is shown in the flowchart of the refrigeration system program of the tenth embodiment of the present invention. Only steps different from those of the refrigeration system program will be described.

The steps in FIG. 22 different from the ninth embodiment are steps 194, 195 and 200. First, in step 194, the valve opening degree K of the expansion valve 19 is detected by the expansion valve opening degree detector 15, and the process proceeds to step 195. In step 195, the output circuit 23 causes the valve opening degree Ka = K.
-Η (eg, η = 10 pulses) is narrowed down, and the process proceeds to step 196. In step 200, the expansion valve opening degree Ka of the expansion valve 19
Is returned to the initial valve opening K and the process returns to step 190.

As described above, even when the incompatible refrigerating machine oil is used as the refrigerant, when the compressor temperature is lowered, the saturation temperature is calculated from the pressure in the compressor, so that the refrigerant and the refrigerating machine oil are stored in the compressor. It is possible to reliably judge whether or not the refrigerant is in a two-phase separation (does not mix) state, and it is possible to reliably judge whether the refrigerant and refrigeration oil are in a two-phase separation (do not melt) inside the compressor, and the refrigerating machine operation Even in the middle state, the temperature of the compressor is raised by changing the valve opening of the expansion valve, and the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor. It is possible to prevent damage due to poor lubrication due to flowing into the sliding portion, and easily realize optimum operation and refrigeration cycle control.

Next, the eleventh embodiment of the present invention will be described.
This will be described with reference to FIGS. 23a and 23b. FIG. 23a is a schematic view of the configuration of the entire compressor, and FIG. 23b is a detailed view of the bottom of the compressor.

For example, in the case of a vertical compressor as shown in FIG. 23a, refrigerating machine oil and liquid refrigerant will stay in the lower part of the compressor. The details will be described with reference to FIG. 23b. As shown in FIG. 23, the liquid refrigerant and the refrigerating machine oil stay in a state of being separated into two phases. Therefore, by installing and heating the heater heater 6 at the bottom of the compressor, the liquid refrigerant can be vaporized and removed more effectively.

[0082]

As is apparent from the above embodiments, the control device for the refrigerating apparatus of the present invention includes the outside air temperature detector for detecting the outside air temperature even when the incompatible refrigerating machine oil is used as the refrigerant. By having a heater heater to heat the compressor, it is considered that the refrigerant is condensed and liquefied in the compressor when the outside air temperature drops, and the refrigerant and refrigerating machine oil are in a two-phase separated (not melted) state. Under the conditions, the heater heater is turned on to heat the compressor to evaporate the condensed and liquefied refrigerant and prevent damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor at start-up. It is possible to realize the operation at the time of starting and the control of the refrigeration cycle.

Further, even when an incompatible refrigerating machine oil is used as the refrigerant, it has an outside air temperature detector for detecting the outside air temperature, a heater heater for heating the compressor, an indoor fan and an outdoor fan device. Therefore, when the outside air temperature decreases, the refrigerant is condensed and liquefied in the compressor, and under the condition that the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt), turn on the heater heater and compress By heating the machine, the condensed and liquefied refrigerant is evaporated and expelled to the outside of the compressor. By turning on the heater heater and simultaneously turning on the indoor fan and the outdoor fan, the evaporated refrigerant is promptly changed to the indoor heat exchanger. It can be condensed in the outdoor heat exchanger, prevents damage due to poor lubrication due to liquid refrigerant flowing into the compressor sliding part at startup, and aims to realize more optimal startup operation and refrigeration cycle control. Theft is possible.

Even when an incompatible refrigerating machine oil is used as the refrigerant, it has an outside air temperature detector for detecting the outside air temperature, a heater heater for heating the compressor, an indoor fan and an outdoor fan device. Therefore, when the outside air temperature drops, the refrigerant is condensed and liquefied in the compressor, and under the condition that the refrigerant and the refrigerating machine oil are separated into two phases (do not melt), turn on the heater heater and turn on the outside air. By changing the time to heat the compressor with respect to the temperature, the condensed and liquefied refrigerant is evaporated more efficiently without being wasted and driven out of the compressor. By turning on the heater heater and turning on the indoor fan and the outdoor fan at the same time. The evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, preventing damage due to poor lubrication caused by the liquid refrigerant flowing into the sliding parts of the compressor at startup, and It is possible to achieve the realization of Do operation and the refrigerating cycle control at the time of startup.

Even when the incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature detector for detecting the compressor temperature, the heater heater for heating the compressor, the indoor fan and the outdoor fan device. When the temperature of the compressor is lowered, the refrigerant is condensed and liquefied in the compressor, and the heater and the heater are turned on under the condition that the refrigerant and the refrigerating machine oil are separated into two phases (do not melt). By heating the compressor as described above, without being affected by the outside air temperature, it is possible to more effectively and efficiently evaporate the condensed and liquefied refrigerant and expel it to the outside of the compressor, thereby turning on the indoor fan and the outdoor fan at the same time. , The evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, and prevents damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor at startup,
It is possible to realize the optimal start-up operation and refrigeration cycle control.

Even when the incompatible refrigerating machine oil is used as the refrigerant, the saturation temperature is calculated from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector,
When the temperature of the compressor drops, it can be judged more reliably and accurately whether the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt), and the heater heater is turned on to heat the compressor. By doing so, without being affected by the outside air temperature, the condensed and liquefied refrigerant can be evaporated more reliably and more accurately and expelled to the outside of the compressor without waste, and the indoor fan and outdoor fan are turned on at the same time as the heater heater is turned on. By doing so, the evaporated refrigerant can be quickly condensed in the indoor heat exchanger and the outdoor heat exchanger, preventing damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor at startup, and optimal startup. It is possible to realize the operation at the time and the control of the refrigeration cycle.

Even when incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature can be calculated by calculating the saturation temperature from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector. When the temperature drops, it can be surely determined whether the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt) in the compressor, and even if the refrigerating machine is in operation, turn on the heater heater. By heating the compressor, the condensed and liquefied refrigerant is evaporated and driven out of the compressor, preventing damage due to poor lubrication due to the liquid refrigerant flowing into the sliding parts of the compressor during operation, and optimal operation and refrigeration cycle control Can be realized.

Even when the incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature can be calculated by calculating the saturation temperature from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector. When the temperature drops, it can be reliably determined whether the refrigerant and the refrigerating machine oil are separated into two phases (do not melt) in the compressor, and the rotation of the indoor fan and the outdoor fan even when the refrigerating machine is operating. By changing the number, the temperature of the compressor is raised, the condensed and liquefied refrigerant is evaporated and driven out of the compressor, and damage due to poor lubrication due to the flowing of the liquid refrigerant into the compressor sliding part during operation is prevented, and more Optimal operation and refrigeration cycle control can be realized by simple means.

Even when an incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature can be calculated by calculating the saturation temperature from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector. When it decreases, it can be surely determined whether the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt) in the compressor, and even if the refrigerating machine is operating, the rotation speed of the outdoor fan only By changing the temperature of the compressor, the temperature of the compressor is raised, and the condensed and liquefied refrigerant is evaporated to drive it out of the compressor, and the lubricating liquid flows into the sliding parts of the compressor during operation without impairing the indoor comfort. It is possible to prevent damage due to defects and to realize optimal and comfortable operation and refrigeration cycle control by simpler means.

Even when an incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature can be calculated by calculating the saturation temperature from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector. When it decreases, it can be surely judged whether the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt) in the compressor, and the operating frequency of the compressor is changed even when the refrigerating machine is in operation. By doing so, the temperature of the compressor is immediately increased, and the condensed and liquefied refrigerant is evaporated in a short time to drive it out of the compressor, causing damage due to poor lubrication due to the flowing of the liquid refrigerant into the sliding parts of the compressor during operation. It is possible to prevent this and realize more optimal operation and refrigeration cycle control.

Even when an incompatible refrigerating machine oil is used as the refrigerant, the compressor temperature can be calculated by calculating the saturation temperature from the compressor temperature detector for detecting the compressor temperature and the compressor internal pressure detector. When it decreases, it can be surely determined whether the refrigerant and the refrigerating machine oil are in two-phase separation (do not melt) in the compressor, and even if the refrigerating machine is in operation, the expansion valve opening can be adjusted. Immediately and easily increase the temperature of the compressor by changing it, evaporate the condensed and liquefied refrigerant to drive it out of the compressor, and damage it due to poor lubrication by flowing liquid refrigerant into the sliding parts of the compressor during operation. This makes it possible to realize more simple and optimal operation and refrigeration cycle control.

By installing the heater heater 6 at the bottom of the compressor for heating, the liquid refrigerant staying at the bottom of the compressor can be more effectively vaporized and removed.

[Brief description of drawings]

FIG. 1 is a refrigeration cycle diagram showing first, second, and third embodiments of a refrigeration apparatus controller of the present invention.

FIG. 2 is an electronic control circuit diagram in the first embodiment.

FIG. 3 is a block diagram of the first embodiment.

FIG. 4 is a flowchart in the first embodiment.

FIG. 5 is an electronic control circuit diagram in the second and third embodiments.

FIG. 6 is a block diagram of the second and third embodiments.

FIG. 7 is a flowchart in the second embodiment.

FIG. 8 is a flowchart in the third embodiment.

FIG. 9 is a refrigeration cycle diagram showing a fourth embodiment of the control device of the refrigeration apparatus of the present invention.

FIG. 10 is an electronic control circuit diagram in the fourth embodiment.

FIG. 11 is a block diagram of the fourth embodiment.

FIG. 12 is a flowchart in the fourth embodiment.

FIG. 13 is a fifth, sixth, and sixth control devices of the refrigeration system of the present invention.
Refrigeration cycle diagram showing seventh, eighth, ninth, and tenth embodiments

FIG. 14 is an electronic control circuit diagram in fifth, sixth and seventh embodiments.

FIG. 15 is a block diagram of fifth, sixth, seventh, eighth, ninth, and tenth aspects.

FIG. 16 is a flowchart in the fifth embodiment.

FIG. 17 is a flowchart in the sixth embodiment.

FIG. 18 is a flowchart in the seventh embodiment.

FIG. 19 is an electronic control circuit diagram in eighth, ninth and tenth embodiments.

FIG. 20 is a flowchart of the eighth embodiment.

FIG. 21 is a flowchart in the ninth embodiment.

FIG. 22 is a flowchart of the tenth embodiment.

FIG. 23 (a) Schematic configuration diagram of the entire compressor in the eleventh embodiment (b) Detailed view of the compressor bottom portion in the eleventh embodiment

[Explanation of symbols]

 1 compressor 2 four-way valve 3 outdoor heat exchanger 4 decompressor 5 indoor heat exchanger 6 heater heater 6a heating time detector 7 outside air temperature detector 8 A / D converter 9 LSI 10 compressor temperature detector 11 inside compressor Pressure detector 12 Indoor fan rotational speed detector 13 Outdoor fan rotational speed detector 14 Operating frequency detector 15 Valve opening detector 16 Indoor fan 17 Outdoor fan 18 Compressor motor 19 Expansion valve 20 Input circuit 21 CPU 22 Memory 23 Output Circuit 24 Operation mode detector 25 Timer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kiyoshi Sawai 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (11)

[Claims] 1. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a decompressor, an indoor heat exchanger are annularly connected to form a refrigerant circuit, and a heating unit is provided in the compressor.
The outdoor heat exchanger is provided with an outside air temperature detecting means for detecting and outputting the outside air temperature, and controls by comparing the outside air temperature output from the outside air temperature detecting means with a set value before starting each operation of cooling and heating. First comparing means for outputting a signal, heating time detecting means for measuring and outputting the operating time of the heating means, and a control signal for comparing a value output from the heating time detecting means with a set value Of the output mode of the storage means according to a control signal generated from the first and second comparison means, the storage means storing the output mode for controlling ON / OFF of the heating means. A control device for a refrigerating apparatus using refrigerating machine oil that is incompatible with a refrigerant, which is configured by a selection unit that selects one of the two and an output unit that controls ON / OFF of the heating unit according to the output mode of the storage unit. 2. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the compressor has heating means, the indoor heat exchanger has indoor fan control means, and the outdoor heat exchange. The outdoor fan control means and the outside air temperature detecting means for detecting and outputting the outside air temperature are installed in the air conditioner, and the outside air temperature output from the outside air temperature detecting means is compared with the set value before the start of each operation of cooling and heating, and controlled. First comparing means for outputting a signal, heating time detecting means for measuring and outputting the operating time of the heating means, and comparing the value output from the heating time detecting means with a set value. Second comparison means for outputting a control signal, storage means for storing an output mode for controlling ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means, and the first and second Control signal generated by comparison means A selection means for selecting one of the output modes of the storage means, and an output means for controlling ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means according to the output mode of the storage means. Of a refrigeration system using refrigeration oil that is incompatible with the refrigerant. 3. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the compressor has heating means, the indoor heat exchanger has indoor fan control means, and the outdoor heat exchanger. An outdoor fan control unit is provided in the outdoor heat exchanger, and an outdoor air temperature detection unit that detects and outputs the outdoor air temperature is installed in the outdoor heat exchanger.
Before the start of each operation of cooling and heating, the first comparing means for comparing the outside air temperature output from the outside air temperature detecting means with a plurality of set values and outputting a control signal, and the time during which the heating means is operating are set. Heating time detecting means for measuring and outputting, second comparing means for comparing a value output from the heating time detecting means with a set value and outputting a control signal, the heating means and the indoor fan control means And O of the outdoor fan control means
Storage means for storing an output mode for controlling N / OFF,
Selection means for selecting one of the output modes of the storage means by a control signal generated from the first and second comparison means, and the heating means, the indoor fan control means, and the control means according to the output mode of the storage means. Outdoor fan control means ON
A control device for a refrigerating device using refrigerating machine oil that is incompatible with a refrigerant and is constituted by an output unit that controls ON / OFF. 4. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the indoor heat exchanger is provided with an indoor fan control means and the outdoor heat exchanger is provided with an outdoor fan control means. , A compressor temperature detecting means for detecting and outputting the temperature of the heating means and the compressor is installed in the compressor, and a value and a set value output from the compressor temperature detecting means are set before starting each operation of cooling and heating. Comparison means for comparing and outputting a control signal, storage means for storing an output mode for controlling ON / OFF of the heating means, the indoor fan control means, and the outdoor fan control means, and a control signal generated from the comparison means By means of selecting one of the output modes of the storage means, and turning on the heating means, the indoor fan control means, and the outdoor fan control means according to the output mode of the storage means.
A control device for a refrigerating device using refrigerating machine oil that is incompatible with a refrigerant and is constituted by an output unit that controls ON / OFF. 5. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and the indoor heat exchanger is provided with an indoor fan control means and the outdoor heat exchanger is provided with an outdoor fan control means. The heating means and the compressor temperature detecting means for detecting and outputting the temperature of the compressor and the compressor internal pressure detecting means for detecting and outputting the pressure in the compressor are installed in the compressor,
Calculating means for calculating and outputting the saturation temperature of the refrigerant from the value detected by the in-compressor pressure detecting means before starting each operation of cooling and heating, and the value output by the calculating means and the compressor temperature detecting means. Comparing means for comparing the generated value with the value output from the compressor saturation temperature detecting means to output a control signal, and controlling ON / OFF of the heating means, the indoor fan control means and the outdoor fan control means. Storage means for storing the output mode to be stored, selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means, and the heating means and the indoor fan control means according to the output mode of the storage means. And a control device for a refrigerating apparatus using refrigerating machine oil that is incompatible with a refrigerant, which is constituted by an output unit that controls ON / OFF of the outdoor fan control unit. 6. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a pressure reducer, a refrigerant circuit is formed by annularly connecting the indoor heat exchanger, the compressor temperature detection means for detecting and outputting the temperature of the heating means and the compressor to the compressor, Arrangement means for detecting the pressure in the compressor and for outputting the pressure inside the compressor, and calculating and outputting the saturation temperature of the refrigerant from the value detected by the pressure detection means in the compressor during each operation of cooling and heating. ON / OFF of the heating means, comparing means for comparing the value output by the computing means with the value detected by the compressor temperature detecting means, and outputting a control signal.
A storage unit that stores an output mode for controlling OFF, a selection unit that selects one of the output modes of the storage unit according to a control signal generated from the comparison unit, and an ON / OFF of the heating unit according to the output mode of the storage unit. A control device for a refrigerating apparatus using refrigerating machine oil that is incompatible with a refrigerant and is constituted by an output means for controlling OFF. 7. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and an operation mode detecting means for detecting and outputting an operation mode to the four-way valve, the indoor heat exchanger. The indoor fan control means and the indoor fan rotation speed detection means for detecting and outputting the rotation speed of the indoor fan, and the outdoor fan rotation speed for detecting and outputting the rotation speed of the outdoor fan control means and the outdoor fan to the outdoor heat exchanger. Detecting means, compressor temperature detecting means for detecting and outputting the temperature of the compressor, and compressor internal pressure detecting means for detecting and outputting the pressure inside the compressor are installed, and the compressor internal pressure during each heating and cooling operation. Computation means for computing and outputting the saturation temperature of the refrigerant from the value detected by the detection means, and the value output by the computation means and the value detected by the compressor temperature detection means are compared and a control signal is output. Comparison hand If, storage means for storing an output mode for controlling the rotational speed of the outdoor fan and the indoor fan,
Refrigerant comprising selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means, and output means for controlling the rotational speeds of the indoor fan and the outdoor fan according to the output mode of the storage means. A control device for a refrigerating machine using an incompatible refrigerating machine oil. 8. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a decompressor, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, and an operation mode detecting means for detecting and outputting an operation mode to the four-way valve, the outdoor heat exchanger. The outdoor fan control means and the outdoor fan rotation speed detection means for detecting and outputting the rotation speed of the outdoor fan, the compressor temperature detection means for detecting and outputting the temperature of the compressor, and the pressure in the compressor for detection and output. The compressor pressure detecting means is installed, and the calculating means for calculating and outputting the saturation temperature of the refrigerant from the value detected by the compressor pressure detecting means during each operation of cooling and heating, and the value output by the calculating means. And a comparison means for comparing a value detected by the compressor temperature detection means and outputting a control signal, a storage means for storing an output mode for controlling the rotation speed of the outdoor fan, and a control signal generated by the comparison means. Refrigeration using refrigerating machine oil that is incompatible with the refrigerant and is composed of a selection means for selecting one of the output modes of the storage means and an output means for controlling the rotation speed of the outdoor fan according to the output mode of the storage means. The control device of the device. 9. A compressor using an incompatible refrigerating machine oil as a refrigerant,
A four-way valve, an outdoor heat exchanger, a pressure reducer, an indoor heat exchanger are annularly connected to form a refrigerant circuit, and an operating frequency detecting means for detecting and outputting a compressor operating frequency to the compressor, the compressor. A compressor temperature detecting means for detecting and outputting the temperature of the compressor, and a compressor internal pressure detecting means for detecting and outputting the pressure inside the compressor are installed, and detected by the compressor internal pressure detecting means during each operation of cooling and heating. Calculating means for calculating and outputting the saturation temperature of the refrigerant from the value, comparing means for comparing the value output by the calculating means with the value detected by the compressor temperature detecting means, and outputting a control signal; Storage means for storing an output mode for controlling the operating frequency of the machine; selection means for selecting one of the output modes of the storage means by a control signal generated from the comparison means; and the pressure according to the output mode of the storage means. Control apparatus for a refrigeration apparatus using the refrigerator oil incompatible with the refrigerant constituted by the output means for controlling the operating frequency of the machine. 10. A compressor using a refrigerating machine oil incompatible with a refrigerant, a four-way valve, an outdoor heat exchanger, a pressure reducer, and an indoor heat exchanger are annularly connected to form a refrigerant circuit, A compressor temperature detecting means for detecting and outputting a temperature, a compressor pressure detecting means for detecting and outputting the pressure inside the compressor, and an opening degree detecting means for detecting and outputting the opening degree of the pressure reducer are installed, During each heating and cooling operation, a calculating means for calculating and outputting the saturation temperature of the refrigerant from the value detected by the compressor internal pressure detecting means, a value output by the calculating means and the compressor temperature detecting means are detected. One of the output mode of the storage means according to the control signal generated from the comparison means, the storage means storing the output mode for controlling the opening degree of the pressure reducer Selecting means for selecting Control apparatus for a refrigeration apparatus using the refrigerator oil incompatible with the refrigerant constituted by the output means in accordance with stage output mode controls the opening degree of the pressure reducer. 11. The method according to claim 1, further comprising a heating means for locally heating the lower part of the compressor, which has a suction port for the refrigerating machine oil in a lower part of the compressor using refrigerating machine oil incompatible with a refrigerant. 6
A control device for a refrigerating apparatus using refrigerating machine oil that is incompatible with the described refrigerant.