JPH08310228A - Heat pump cooling, heating, and dehumidification control device for electric car - Google Patents

Abstract

PURPOSE: To easily obtain from cold air to hot air by providing a means to carry out an operation for a motor rotation number of a power-driven compressor, and an opening degree of a blow temperature adjusting means in accordance with set temperature. CONSTITUTION: A control mode determining means 24 determines a cooling mode when a set temperature by a set temperature means 14 is within a first range, a dehumidifying heating mode when it is within a second range, and a heating mode when it is within a third range. A rotation number operation means 25 operates a rotation number corresponding to an output temperature signal of the set temperature means 14, and a rotation number outputting means 26 outputs the rotation number to an inverter 21 based on the operated rotation number. An opening operation means 27 operates an opening of a mix damper 12 in accordance with the set temperature, and an opening outputting means 28 actuates an actuator 23 to a specified opening based on the operated opening. An operation mode changing means 29 changes a four-way changing valve 7 based on the result of determination by the control mode determination means 24, and an output control means 30 controls a cooling medium throttling device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat pump cooling / heating / dehumidifying control device for an electric vehicle that air-conditions the interior of the electric vehicle.

[0002]

2. Description of the Related Art A conventional heat pump cooling / heating / dehumidifying control device for an electric vehicle is, for example, as shown in the configuration diagram of FIG. 11, an electric compressor 1 having a built-in motor, and an outside air heat exchanger 2 for a vehicle.
A bypass circuit 35 arranged to bypass the vehicle exterior air heat exchanger 2, a first three-way switching valve 36 arranged on the inlet side of the bypass circuit 35, and an outlet side of the bypass circuit 35. The second three-way switching valve 37 arranged so as to be paired with the inlet side, the blower device 3 for the outside-air-air heat exchanger, and the introduction of mixed air into the passenger compartment or outside the passenger compartment or outside the passenger compartment are selected. Inside / outside air introduction device 38
And a first ventilation circuit 9 connecting the vehicle interior air heat exchanger air blower 6, the vehicle interior air heat exchanger air blower 6 and the vehicle interior air outlet 8, and arranged in the first ventilation circuit 9. First
A vehicle interior air heat exchanger 10, a second vehicle interior air heat exchanger 11 arranged in the first ventilation circuit 9 downstream of the first vehicle interior air heat exchanger 10, and A second ventilation circuit 22 that branches from a downstream side of the first vehicle interior air heat exchanger 10 of the first ventilation circuit 9 and merges with the first ventilation circuit 9 again, and the first ventilation circuit 22. Ventilation circuit switching damper 3 for switching between the circuit 9 and the second ventilation circuit 22
9, a ventilation circuit switching actuator 40 for driving the ventilation circuit switching damper 39, and a four-way switching valve 7
A refrigerant pipe 5 connecting the electric compressor 1, the heat exchangers, and the four-way switching valve 7, between the first vehicle interior air heat exchanger 10 and the second vehicle interior air heat exchanger 11. The first refrigerant expansion device 41 arranged in the refrigerant pipe 5 and the second refrigerant pipe 5 arranged between the second vehicle interior air heat exchanger 11 and the vehicle exterior air heat exchanger 2. In the heat pump cooling and heating dehumidifying device for an electric vehicle, which is configured by the refrigerant expansion device 42 of FIG. 1, the inverter 21 that drives the motor of the electric compressor 1 at a variable rotation speed, and the air conditioning operation panel 13
And a set temperature means 14 using a variable VR for making a setting corresponding to or related to the temperature of the air blown into the vehicle interior,
Similarly, control mode setting means 43 using three SWs (A / C SW, heating SW, dry SW) for setting the control modes of the cooling mode, the heating mode, and the dehumidifying and heating mode in the air conditioning operation panel 13, and further The air volume setting means 15 configured by SW for setting the air volume of the vehicle interior air heat exchanger air blower 6, and the air volume setting means 15
A register 16 arranged downstream of the vehicle interior air heat exchanger air blower 6 for variably driving the air flow rate of the vehicle interior air heat exchanger air blower 6 according to the SW position of the air conditioner control means 20. The air conditioning control means 20 includes the first refrigerant expansion device 41, the second refrigerant expansion device 42, the first three-way switching valve 36, the second three-way switching valve 37, and the ventilation. An output control means 30 for controlling the circuit switching actuator 40, and a rotation speed calculation means 25 for calculating the rotation speed corresponding to the output temperature signal of the set temperature means 14 based on the signal from the control mode setting means 43. , And a rotation speed output means 26 for outputting the rotation speed to the inverter 21 based on the rotation speed calculated by the rotation speed calculation means 25.

Therefore, when performing cooling,
The cooling SW of the control mode setting means 43 in the air conditioning operation panel 13 is turned on, and based on this signal, the output control means 30 in the air conditioning control means 20 causes the ventilation circuit switching damper 39 to be at the position shown in FIG. The ventilation circuit switching actuator 40 is controlled so that the wind flows through the first ventilation circuit 9. Furthermore, the four-way switching valve 7 is switched to the circuit shown by the solid line so that the high-temperature, high-pressure refrigerant discharged from the electric compressor 1 flows to the vehicle exterior air heat exchanger 2, and the first three-way switching valve 36 and the second three-way switching valve 36 are connected. The three-way switching valve 37 is switched to the circuit indicated by the solid line so that the refrigerant flows to the vehicle exterior air heat exchanger 2, and the first refrigerant expansion device 41 is fully opened (no expansion), and the second refrigerant expansion device is opened. 42 is a state with a diaphragm. Therefore, the refrigerant discharged from the electric compressor 1 passes through the four-way switching valve 7, passes through the vehicle exterior air heat exchanger 2, and radiates heat to the vehicle exterior air by the vehicle exterior air heat exchanger blower 3, so that the refrigerant becomes Condensate and liquefy. After that, the condensed and liquefied refrigerant is decompressed by the second refrigerant expansion device 42 and passes to the second vehicle interior air heat exchanger 11, the first refrigerant expansion device 41, and the first vehicle interior air heat exchanger 10, The air in the passenger compartment air heat exchanger 6 cools and dehumidifies the air in the passenger compartment or outside the passenger compartment to perform the cooling operation. The cooled air flows through the first ventilation circuit 9 and is supplied into the vehicle compartment.

When it is desired to change the blowout temperature of the air supplied to the vehicle interior, the blowout temperature is controlled by changing the rotation speed of the electric compressor 1 and increasing or decreasing the amount of refrigerant circulation. Therefore, as shown in FIG. 11, the output temperature signal of the set temperature means 14 is input to the rotation speed calculation means 25 in the air conditioning control means 20. When the output signal from the control mode setting means 43 is in the cooling mode, for example, as shown in FIG. 12, the rotation speed calculating means 25 refers to the characteristic curve of A and corresponds to the output temperature signal of the setting temperature means 14. The rotation speed is calculated and output to the rotation speed output means 26. The rotation speed output means 26 outputs a signal of this rotation speed to the inverter 21, and the inverter 21 drives the electric compressor 1 at this instructed rotation speed. Therefore, during cooling, the output temperature signal of the set temperature means 14 is a low temperature signal (the lever of the set temperature means 14 is COL.
When it is on the D side), the rotation speed of the electric compressor 1 increases, the amount of refrigerant circulation increases, and the temperature at which air blows into the vehicle interior decreases. On the contrary, when the output temperature signal of the set temperature means 14 is a high temperature signal (the lever of the set temperature means 14 is on the HOT side), the rotation speed of the electric compressor 1 becomes small and the refrigerant circulation amount decreases, so that the vehicle interior is closed. The temperature at which the air blows out increases.

On the other hand, when heating is performed, the heating S of the control mode setting means 43 in the air conditioning operation panel 13 is operated by an operation.
W is turned on, and based on this signal, the output control means 30 in the air conditioning control means 20 causes the ventilation circuit switching damper 39 to be at the position of C in FIG. 11 (so that the wind flows into the second ventilation circuit 22). The ventilation circuit switching actuator 40 is controlled. Further, the four-way switching valve 7 is reversely rotated with respect to the cooling medium flow path during cooling (circuit indicated by a broken line), and the throttle of the first cooling medium expansion device 41 is opened (state without cooling) in the same manner as during cooling, and the second cooling medium is closed. The diaphragm of the diaphragm device 42 is set to have a diaphragm. Further, the first three-way switching valve 36 and the second three-way switching valve 37
Is switched to the circuit shown by the solid line so that the refrigerant passes through the vehicle exterior air heat exchanger 2.

Therefore, the refrigerant discharged from the electric compressor 1 passes through the four-way switching valve 7 and is in a high pressure and high temperature state in the first vehicle interior air heat exchanger 10 and the second vehicle interior air heat exchanger 1.
In 1, the heat is radiated to the air in the passenger compartment to condense and liquefy the refrigerant. After that, the condensed and liquefied refrigerant passes through the vehicle exterior air heat exchanger 2 via the second refrigerant expansion device 42, where the refrigerant absorbs and evaporates while cooling and dehumidifying the air inside and outside the vehicle interior. I do.

When it is desired to change the blowout temperature of the air supplied to the passenger compartment, the blowout temperature is controlled by changing the rotation speed of the electric compressor 1 and increasing / decreasing the refrigerant circulation amount as in the case of cooling. . Therefore, as shown in FIG. 11, the output temperature signal of the set temperature means 14 is input to the rotation speed calculation means 25 in the air conditioning control means 20, and this rotation speed calculation means 25 controls as shown in FIG. 12, for example. When the output signal from the mode setting means 43 is the heating mode, the characteristic curve of B is referred to, the rotation speed corresponding to the output temperature signal of the set temperature means 14 is calculated, and the calculated rotation speed is output to the rotation speed output means 26. . The rotation speed output means 26 outputs a signal of this rotation speed to the inverter 21, and the inverter 21 drives the electric compressor 1 at this instructed rotation speed. Therefore, during heating, the set temperature means 1
4 is low (the lever of the set temperature means 14 is on the COLD side) when the output temperature signal is low, the rotation speed of the electric compressor 1 becomes small, the refrigerant circulation amount decreases, and the temperature at which air blows into the passenger compartment is On the contrary, when the output temperature signal of the set temperature means 14 is high (the lever of the set temperature means 14 is on the HOT side), the rotation speed of the electric compressor 1 increases and the refrigerant circulation amount increases, so that The temperature at which air blows into the room rises.

When performing dehumidifying heating, the dry SW of the control mode setting means 43 in the air conditioning operation panel 13 is operated by operation.
Then, the air conditioning control means 20 controls the ventilation circuit switching actuator 40 so that the ventilation circuit switching damper 39 is located at the position of C in FIG. 11 (the wind flows into the second ventilation circuit 22), and the four-way switching is performed. The valve 7 is switched to the circuit shown by the solid line to bring the first refrigerant expansion device 41 into the throttled state and the second refrigerant expansion device 42 into the open state (the state without the throttle). Further, the first three-way switching valve 36 and the second three-way switching valve 37 are switched to the broken line circuit so that the refrigerant bypasses the vehicle exterior air heat exchanger 2. Therefore, the refrigerant discharged from the electric compressor 1 is in the high pressure and high temperature
Since it enters the vehicle interior air heat exchanger 11, the second vehicle interior air heat exchanger 11 has a high temperature and radiates heat to the vehicle interior air to condense and liquefy the refrigerant, and then to the first refrigerant expansion device 41. Guide, liquefy, become low pressure, and the first vehicle interior air heat exchanger 10
The refrigerant absorbs heat while cooling and dehumidifying the air inside and outside the vehicle.
Evaporate and return to the electric compressor 1. Therefore, in terms of the flow of wind, the air inside and outside the vehicle compartment is guided by the air blower 6 for the vehicle interior air heat exchanger, and the first vehicle interior air heat exchanger 10 is used.
The second vehicle interior air heat exchanger 11 after being cooled and dehumidified by
It is reheated by and is radiated to the passenger compartment to perform dehumidification heating.

When it is desired to change the blowout temperature of the air supplied to the vehicle compartment, the blowout temperature is controlled by changing the rotation speed of the electric compressor 1 and increasing / decreasing the refrigerant circulation amount, as described above. Therefore, as shown in FIG. 11, the set temperature means 1
The output temperature signal of No. 4 is input to the rotation speed calculation means 25 in the air conditioning control means 20. In this rotation speed calculation means 25, for example, as shown in FIG. In the case of the mode, the rotation number corresponding to the output temperature signal of the temperature setting device 44 is calculated with reference to the characteristic curve of B, and is output to the rotation number output means 26. The rotation speed output means 26 outputs a signal of this rotation speed to the inverter 21, and the inverter 21 drives the electric compressor 1 at this instructed rotation speed. Therefore, during heating, the set temperature means 14
When the output temperature signal of is a low temperature signal (the lever of the set temperature means 14 is on the COLD side), the rotation speed of the electric compressor 1 is reduced, the refrigerant circulation amount is decreased, and the temperature at which air is blown into the vehicle interior is decreased. On the contrary, the output temperature signal of the set temperature means 14 is a high temperature signal (the lever of the set temperature means 14 is HO
When it is on the T side), the rotation speed of the electric compressor 1 increases, the amount of refrigerant circulation increases, and the temperature at which air blows into the vehicle interior rises.

[0010]

As described above, in the heat pump type dehumidifying cooling / heating control device for an electric vehicle, the heating mode is set under the environmental condition where the heating load is relatively small (for example, when there is no solar radiation in spring or autumn). If the setting temperature of the temperature setting means 14 is set to, for example, an intermediate temperature, and then strong sunlight is encountered, even if the setting temperature is changed to the minimum temperature, since the operation is performed in the heating cycle, the blowout temperature is set. Cannot be lowered. Therefore, the control mode setting means 43 is changed to the dry mode or the cooling mode, and then the set temperature means 1 is set.
It was necessary to reset the setting of 4 to the desired blowout temperature again. That is, when it is desired to drastically change the blowing temperature from warm air to cold air or conversely from cold air to warm air due to the narrow range of the blowing temperature in each control mode, the control mode setting means 43 is selected, and further, Since the set temperature means 14 must be adjusted, there is a problem that operability is poor.

Further, under environmental conditions where the cooling load is relatively small (for example, when there is insolation in the midday of spring and autumn), the cooling mode is set, and the setting temperature means 14 is set to, for example, the minimum temperature. The air volume setting is often set to the minimum air volume, but at this time, since the set temperature is set to the minimum temperature even though the cooling load is small, the rotation speed of the electric compressor 1 is set to the maximum. The capacity of the vehicle interior heat exchanger is surplus,
Before the freezing, the temperature of the vehicle interior heat exchanger is lowered (for example, 0 ° C. or lower), so the electric compressor 1 is frequently stopped. Therefore, even if the temperature of the vehicle interior heat exchanger rises again (for example, 2 ° C. or higher), there is a difference between the discharge pressure and the suction pressure of the electric compressor 1, and the starting torque is large, so it cannot be started immediately. However, there is a problem in that the temperature of the air blown into the passenger compartment rises, causing a feeling of strangeness. Furthermore,
Since the electric compressor 1 is operated at the maximum rotation speed, there is also a problem that wasteful power is consumed in order to save energy.

Similarly, in the heating mode, when the environmental condition is such that the heating load is relatively small (for example, spring, autumn morning, night, etc.), the heating mode is set and the temperature setter 44 is set to, for example, It is conceivable to set the maximum temperature and further set the air volume to the minimum air volume, but at this time, since the rotation speed of the electric compressor 1 is maximized even though the heating load is small, heat exchange in the passenger compartment is performed. There is little heat dissipation from the container, so the discharge pressure of the electric compressor 1 is the specified pressure (for example, 27 kgf /
cm ² ) or the discharge temperature of the electric compressor 1 rises, the coil temperature of the motor rises and exceeds a prescribed temperature (for example, 130 ° C.), so the electric compressor 1 is stopped. For this reason, there is a difference between the discharge pressure and the suction pressure of the electric compressor 1 again, and the starting torque is large, so that the electric compressor 1 cannot be started immediately and the temperature blown out into the vehicle interior is lowered, causing a feeling of strangeness. There were challenges. Further, since the electric compressor 1 is operated at the maximum rotation speed, there is a problem that wasteful power is consumed for energy saving.

Therefore, according to the present invention, cold air to warm air can be realized by a simple operation, and the feeling and the energy saving can be improved when the temperature is set low and the air volume is small when the cooling load is small in the cooling mode. In addition, in addition to improving the feeling and energy saving when setting a high temperature and a small amount of air when the heating load is low in the heating mode, the heat pump for electric vehicles performs optimum control according to various heat loads. An object is to provide a cooling and heating dehumidification control device.

[0014]

[Means for Solving the Problems]

(Claim 1) In order to solve the first problem, a first aspect of the present invention is to provide an electric compressor including a motor,
Setting temperature means for setting the temperature corresponding to or related to the temperature of the air blown into the passenger compartment, an inverter for energizing the motor of the electric compressor to drive the electric compressor at a variable rotation speed, and the electric compression for the inverter. An air conditioning control means for instructing the number of rotations of the machine, and an air conditioning control mode for the air conditioning control means when the set temperature from the set temperature means is in a first range,
Control mode determination means for determining a dehumidifying heating mode in the second range and a heating mode in the third range, and setting from the set temperature means when the set temperature from the set temperature means is in the first range The higher the temperature is, the more the rotation speed is decreased, and when the set temperature from the set temperature means is in the second range, the rotation speed is fixed to a predetermined rotation speed or the set temperature of the set temperature means is higher. A rotation speed calculation means for increasing or decreasing the rotation speed, and for increasing the rotation speed as the set temperature of the set temperature means increases when the set temperature from the set temperature means is in the third range, When the set temperature from the set temperature means is in the first range, the outlet temperature adjusting means for adjusting the temperature of the air blown into the passenger compartment is fixed to the maximum cooling opening degree,
When the set temperature from the set temperature means is in the second range, the higher the set temperature of the set temperature means is, the higher the set temperature of the temperature control means is from the maximum cooling opening degree to the maximum heating opening degree.
When changing the heating opening direction, and when the set temperature from the set temperature means is in the third range, the opening degree of the blowout temperature adjusting means changes to the heating direction as the set temperature of the set temperature means increases. Or the opening calculation means for fixing the maximum heating opening, the operation mode switching means for switching the operation mode of the heat pump cooling and heating dehumidification device based on the determination result of the control mode determination means, and the rotation speed calculated by the rotation speed calculation means. Rotation speed output means for outputting the rotation speed to the inverter based on the opening degree, and opening degree output means for operating the blowout temperature adjusting means to a predetermined opening degree based on the opening degree calculated by the opening degree calculation means.

According to a second aspect of the present invention, in order to solve the above-mentioned problems, the means of claim 1, an air volume setting means for selecting an air volume to be blown into the vehicle interior, and the air volume setting means. Or, based on the signal of the actual air volume of the air blower for the vehicle interior air heat exchanger, the smaller the set air volume or the actual air volume,
An air volume correction means for increasing the degree of decrease in the rotation speed calculated by the rotation speed calculation means is provided.

According to a third aspect of the present invention, in order to solve the above problems, the means of claim 1, an outside air temperature detecting means for detecting the temperature outside the vehicle compartment, and the outside air temperature detecting means. An outside air temperature correction means for correcting the set temperature of the set temperature means in accordance with a signal from

According to a fourth aspect of the present invention, in order to solve the above-mentioned problems, the means of claim 1, an inside air temperature detecting means for detecting the temperature in the passenger compartment, and the inside air temperature detecting means. It is provided with an inside air temperature correction means for correcting the set temperature of the set temperature means in accordance with a signal from.

According to a fifth aspect of the present invention, in order to solve the above problems, the means of claim 1, a solar radiation amount detecting means for detecting the solar radiation amount outside the vehicle compartment, and the solar radiation amount detection. A solar radiation amount correction means for correcting the set temperature of the set temperature means according to a signal from the means.

According to a sixth aspect of the present invention, in order to solve the above problems, the means of claim 1, a solar radiation amount detecting means for detecting the solar radiation amount outside the vehicle compartment, and the solar radiation amount detection. The solar radiation amount lower limit limiting means limits the lower limit value of the rotation speed calculated by the rotation speed calculating means according to a signal from the means.

[0020]

According to the first means of the present invention, the air conditioning control means is provided with a cooling mode when the set temperature from the setting temperature means is in the first range, a dehumidifying and heating mode when it is in the second range, and a third range. When the control mode determination means determines the heating mode, the rotation speed calculation means for calculating the rotation speed of the motor of the electric compressor according to the set temperature from the set temperature means, and the set temperature from the set temperature means Further, since the opening calculation means for calculating the opening of the blow-out temperature adjusting means is provided, the control mode, the rotation speed of the electric compressor, and the blow-out temperature adjusting means are appropriately controlled at the same time only by operating the set temperature means. Therefore, it is possible to easily obtain from cold air to warm air. For example, when the temperature setting device is set to the third range under an environmental condition in which the heating load is relatively small (for example, when there is no solar radiation in spring or autumn), the control mode determination means determines the heating mode and performs the heating operation. I do. After that, when strong sunlight is encountered, if the set temperature is lowered and the setting is changed to, for example, the second range, the dehumidifying and heating operation can be performed, and a relatively cool wind can be obtained quickly.
If a lower blowout temperature is desired, a lower blowout temperature can be obtained simply by changing the set temperature to the first range.

According to the second means of the present invention, the first means, the air volume setting means for selecting the air volume to be blown into the vehicle interior, and the actual air volume of the air volume setting means or the air blower for the vehicle interior air heat exchanger. On the basis of the signal of (1), the smaller the set air volume or the actual air volume, the larger the air volume correction means for increasing the degree of decrease in the rotation speed calculated by the rotation speed calculation means. Here, the rotation speed calculation means calculates the rotation speed corresponding to the set temperature means on the assumption that the air volume set by the air volume setting means is the maximum air volume. Therefore, for example, in a condition where the heat load is small (for example, spring and autumn day and day), the set temperature means is set to the minimum temperature in the first range, the air volume is set to the minimum air volume, and the cooling operation is performed. Since the rotation speed of the electric compressor is lowered by the air flow correction means, the extra cooling capacity can be reduced and the frequency of freezing of the vehicle interior heat exchanger can be reduced. Similarly, in the heating mode as well, a condition with a small heat load (for example, spring, autumn morning,
In the evening), when the set temperature means is set to the maximum temperature in the third range, the air volume is set to the minimum air volume, and the heating operation is performed, the rotation speed of the electric compressor is similarly lowered by the air volume correction means. Therefore, the extra heating capacity can be reduced, and the rise of discharge pressure and discharge temperature of the electric compressor can be suppressed.

According to the third means of the present invention, the first means, the outside air temperature detecting means for detecting the temperature outside the vehicle compartment, and the set temperature of the setting temperature means according to the signal from the outside air temperature detecting means. It is provided with an outside air temperature correction means for performing the correction. Here, the outside air temperature correcting means sets no correction amount when the temperature from the outside air temperature detecting means is in the middle season (outside air temperature of about 15 ° C.),
As the temperature from the outside air temperature detection means becomes higher than that in the middle season, the correction amount is increased to the low temperature side to set the temperature of the set temperature means, and as the temperature from the outside air temperature detection means becomes lower than that in the middle season. When the correction amount of the set temperature of the set temperature means is increased to the high temperature side, for example, the set temperature means is set to the first set under the condition that the cooling load is small (for example, the outside air temperature on the day and day of spring and autumn around 20 ° C.). When the minimum temperature in the range is set and the air volume is set to the minimum air volume, the cooling operation is performed by the control mode determination means, and the set temperature of the set temperature means is the minimum temperature, but the cooling capacity is not so required. Since there is no air conditioner, the amount of correction to the low temperature side is small by the outside air correction means, and the rotation speed is reduced, so the extra cooling capacity can be reduced and the frequency of freezing of the interior heat exchanger is reduced. Can be made. Further, for example, when there is a heat load such as no summer solar radiation (outside air temperature around 30 ° C.), the amount of correction by the outside air correction means to the low temperature side to the set temperature of the set temperature means is large, so the number of revolutions is increased, Comfort can be maintained without increasing the temperature of the blowout air.
On the other hand, in the heating mode, the condition that the heat load is small (for example,
When the set temperature means is set to the maximum temperature of the third range and the air volume is set to the minimum air volume in the outside air of about 15 ° C. in the morning of spring, autumn, and evening), the heating operation is performed by the control mode determination means. Although the set temperature of the set temperature means is the maximum temperature, since the heating capacity is not so required, the amount of correction by the outside air correction means to the set temperature of the set temperature means to the high temperature side is low outside air (for example, outside air temperature Since it is less than that of around 0 ° C.), the increase in the number of revolutions by the outside air correction means is small or none, and the extra heating capacity can be reduced, and the rise in discharge pressure and discharge temperature of the electric compressor can be suppressed. You can Further, when the outside air temperature around 0 ° C., which has a heating load to some extent, is largely corrected by the outside air correction means to the high temperature side, the rotation speed increases, so that the blowing temperature does not decrease and the comfort is maintained. be able to.

According to the fourth means of the present invention, the inside air temperature detecting means for detecting the temperature inside the vehicle compartment, and the inside air temperature for correcting the set temperature of the set temperature means according to the signal from the inside air temperature detecting means. A correction means is provided. Here, the inside air temperature correction means makes no correction amount when the temperature from the inside air temperature detection means is, for example, about 25 ° C. inside temperature, and the set temperature means is set as the temperature from the inside air temperature detection means becomes higher than 25 ° C. If the correction amount is increased to the low temperature side and the correction amount is increased to the high temperature side as the temperature from the inside air temperature detecting means becomes lower than 25 ° C., the cooling load is increased. Is relatively small (for example, outside temperature 25
When there is no solar radiation around ℃, inside air temperature around 25 ℃), when the set temperature is set to the low temperature in the first range, the cooling operation is performed, and the air volume is set to the minimum air volume, it is set by the inside air correction means. The amount of correction to the low temperature side to the temperature means is small, and the increase in the number of rotations is small or not, so it is possible to reduce the extra cooling capacity and reduce the frequency of freezing of the vehicle interior heat exchanger. it can. Further, when there is some heat load (for example, there is solar radiation around the outside temperature of 25 ° C. and the inside air temperature is around 35 ° C.), the amount of correction to the low temperature side to the set temperature means by the inside air correction means is large, so the rotation speed increases. Yes,
Comfort can be maintained without increasing the temperature of the blowout air. On the other hand, when the set temperature is set to the third range, the heating operation is performed, and the air volume is set to the minimum air volume under the condition that the heat load is small (for example, the outside air temperature is around 0 ° C and the inside air temperature is around 25 ° C) The increase in the rotation speed due to the inside air temperature is small or none, and the same effect as the first means can be obtained. Further, when there is a heating load to some extent (for example, outside air temperature around 0 ° C. and inside air temperature around 0 ° C.), the rotation speed is increased by the inside air correction means, so that the blowing temperature does not decrease and comfort can be maintained. it can.

According to the fifth means, the solar radiation amount detecting means for detecting the solar radiation amount outside the vehicle compartment, and the solar radiation amount correcting means for correcting the set temperature of the setting temperature means according to the signal from the solar radiation amount detecting means. Here, assuming that the solar radiation amount correction means increases the correction amount to the low temperature side by setting the set temperature of the set temperature means as the solar radiation amount is larger, for example, the outside air temperature is around 25 ° C. and the solar radiation amount is When the set temperature is set to a low temperature in the first range and the air volume is set to the minimum air volume under a small number of conditions, the cooling operation is being performed, and the solar radiation amount correction means changes the set temperature to the set temperature means. Since the amount of correction to the low temperature side is small, the increase in the number of rotations is small or none, the extra cooling capacity can be reduced, and the frequency of freezing of the vehicle interior heat exchanger can be reduced. Also, for example, when there is some heat load due to solar radiation, the amount of correction to the set temperature means by the solar radiation amount correction means to the low temperature side is large, so the number of revolutions increases Comfort can be maintained without rising. On the other hand, in the absence of solar radiation, when the set temperature is set to the third high temperature and the air volume is set to the minimum air volume, the heating operation is performed, and the solar radiation amount correction means shifts to the low temperature side to the set temperature. The amount of correction is small, and the decrease in rotation speed is small or none, and proper heating operation is performed.
Also, when there is insolation with a small heating load, the amount of correction to the low temperature side to the set temperature by the insolation correction means is large, so the number of revolutions decreases, the blowing temperature drops, and there is no sweltering heat due to insolation. Can be maintained.

[0025]

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

FIG. 1 is a block diagram of an embodiment of the heat pump cooling / heating / dehumidifying control device for an electric vehicle according to the present invention.

As shown in the configuration diagram of FIG. 1, the electric compressor 1
The outside air heat exchanger 2, the outside air heat exchanger blower device 3, the inside air heat exchanger blower device 6, the inside air heat exchanger blower device 6 and the inside air outlet 8. A first ventilation circuit 9 to be connected, a first vehicle interior air heat exchanger 10 arranged in the first ventilation circuit 9, and the first vehicle interior air heat in the first ventilation circuit 9 A second vehicle interior air heat exchanger 11 arranged downstream of the exchanger 10;
A second ventilation circuit 22 branched from the downstream side of the vehicle interior air heat exchanger 10 and joined again to the first ventilation circuit 9 downstream of the second vehicle interior air heat exchanger 11; Second
A mix damper 12 for performing air volume distribution between the vehicle interior air heat exchanger 11 and the second ventilation circuit 22 to adjust the outlet temperature of the vehicle interior outlet, and an actuator 23 for operating the mix damper 12. Four-way switching valve 7
A refrigerant expansion device 4, the electric compressor 1, the vehicle exterior air heat exchanger 2, the first and second vehicle interior air heat exchangers 10 and 11, the four-way switching valve 7, and the refrigerant expansion device. In a heat pump cooling and heating dehumidifying device for an electric vehicle, which is composed of a refrigerant pipe 5 connecting 4 to each other, an air blown into the vehicle interior into an inverter 21 for driving a motor of the electric compressor 1 at a variable rotation speed and an air conditioning operation panel 13. A set temperature means 14 using a variable VR for setting corresponding to or related to the temperature, and an air volume setting means 15 composed of SW for setting the air volume of the air blower 6 for the vehicle interior air heat exchanger, A register arranged downstream of the vehicle interior air heat exchanger air blower 6 for variably driving the air volume of the vehicle interior air heat exchanger air blower 6 according to the SW position of the air volume setting means 15. 6, the air-conditioning control means 20, and the air-conditioning control means 20, when the set temperature from the set temperature means 14 is in the first range, in the cooling mode, in the second range, in the dehumidifying and heating mode, and in the third range. Based on the control mode determination means 24 for determining the heating mode, the rotation speed calculation means 25 for calculating the rotation speed corresponding to the output temperature signal of the set temperature means 14, and the rotation speed calculated by the rotation speed calculation means 25. Rotation speed output means 2 for outputting the rotation speed to the inverter 21
6. The opening calculation means 27 for calculating the opening of the mix damper 12 according to the set temperature from the set temperature means 14, and the actuator 23 is opened to a predetermined value based on the opening calculated by the opening calculation means 27. Opening degree output means 2 to be operated every time
8, an operation mode switching unit 29 that switches the four-way switching valve 7 based on the determination result of the control mode determination unit 24, and an output control unit 30 that controls the refrigerant expansion device 4.

The operation of the above structure will be described with reference to FIG. First, cooling is performed, and cold air (5 ° C to 1
5 ° C.) is required, the set temperature means 14 is operated to set it to a position (first range) between A to A in FIG. The control mode determination unit 24 in the air conditioning control unit 20 determines the cooling mode, the operation mode switching unit 29 switches the four-way switching valve 7 to the refrigerant circuit indicated by the solid line, and the output control unit 30 further sets the refrigerant expansion device 4 to the proper state. Control the aperture. Further, the opening degree calculation means 27 calculates the full cold opening degree in FIG. 2 while the set temperature of the set temperature means 14 is between A and A. Therefore, the opening degree output means 28 operates the mix damper 12 to the position A. In addition, the rotation speed calculation means 25
As shown in FIG. 2, when the set temperature of the set temperature means 14 is A, the highest rotation speed is calculated, and the rotation speed is decreased as the set temperature of the set temperature means 14 is changed to a. Cage,
The lowest rotation speed is calculated at position a. Therefore, by adjusting the first range (a to a) of the set temperature of the set temperature means 14, the rotation speed of the electric compressor 1 is changed and the refrigerant circulation amount is increased or decreased. It can be changed.

Further, in the spring, autumn, etc., when a blowout temperature in an intermediate temperature range (for example, 15 to 30 ° C.) is required, the set temperature means 14 is operated to move the position between a and c in FIG. 2 (second range). Set to. The control mode determination unit 24 in the air conditioning control unit 20 determines the dehumidifying and heating mode, the operation mode switching unit 29 switches the four-way switching valve 7 to the refrigerant circuit shown by the solid line (the same as the cooling mode), and the output control unit 3
0 controls the refrigerant expansion device 4 to an appropriate expansion. Also,
In the opening degree calculation means 27, the set temperature of the set temperature means 14 is shown in FIG.
When the position is a, the opening of full cold is calculated, and the opening is changed in the hot direction so that the set temperature of the set temperature means 14 is changed to u. The position of full hot is calculated at the position. Further, as shown in FIG. 2, the rotation speed calculation means 25 calculates a constant rotation speed as shown in FIG. 2 when the set temperature of the set temperature means 14 is between A and C. Therefore, the first set temperature of the set temperature means 14
By adjusting the range (a to c), the opening degree of the mix damper 12 can be changed from full hot to full cold, and the blowout temperature can be changed in the middle temperature range.

Further, when heating is performed and hot air (for example, 30 ° C. or higher) is required, the set temperature means 14 is operated, as shown in FIG.
Set it to the position between U and D (the third range). The control mode determination means 24 in the air conditioning control means 20 determines the heating mode, and the operation mode switching means 29 determines the four-way switching valve 7.
To the refrigerant circuit indicated by the dotted line, and further the output control means 3
0 controls the refrigerant expansion device 4 to an appropriate expansion. Also,
The opening calculation means 27 has a set temperature of the set temperature means 14
Between d, the opening degree of full hot in FIG. 2 is calculated. Therefore, the opening output means 28 operates the mix damper 12 to the B position. Further, as shown in FIG. 2, the rotation speed calculation means 25 calculates the lowest rotation speed when the set temperature of the set temperature means 14 is C, and changes the set temperature of the set temperature means 14 to D. , The number of rotations is increased, and the highest number of rotations is calculated at position d.

Therefore, the rotation speed of the electric compressor 1 is changed by adjusting the third range (W) to (D) of the set temperature of the set temperature means 14, and the refrigerant circulation amount is increased or decreased. Changes can be made in the high temperature range.

As described above, the control mode, the number of revolutions of the electric compressor 1 and the blowout temperature adjusting means are appropriately controlled at the same time only by operating the set temperature means, so that it is possible to easily obtain from cold air to warm air. For example, under environmental conditions with a relatively small heating load (for example, when there is no solar radiation in spring or autumn), the temperature setting device 4
When the setting of No. 4 is set to the third range (w to d), the control mode determination means 24 determines the heating mode and performs the heating operation. After that, when strong sunlight is encountered, the dehumidifying heating operation can be performed by lowering the set temperature and changing the setting to, for example, the second range (a to c), and it is possible to quickly obtain relatively cool air. . If a lower blowout temperature is desired, a lower blowout temperature can be obtained simply by changing the set temperature to the first range (a to a).

FIG. 3 is a block diagram of an embodiment of the heat pump cooling / heating / dehumidifying control device for an electric vehicle according to the present invention.

The description of the structure of the refrigeration cycle is the same as that of the embodiment of claim 1, and therefore the description thereof is omitted. The configuration of the control system is substantially the same as that of the embodiment of claim 1, so that only the differences will be described.

The air-conditioning control means 20 is a set temperature means 1
The output from the temperature setting means 14 and the control mode determination means 24 that determines the setting temperature from 4 is the cooling mode in the first range, the dehumidifying and heating mode in the second range, and the heating mode in the third range. Based on the signals from the rotation speed calculation means 25 for calculating the rotation speed corresponding to the temperature signal and the air flow rate setting means 15, the smaller the set air flow rate, the smaller the degree of decrease in the rotation speed calculated by the rotation speed calculation means 25. In accordance with the air volume correction means 31 for increasing, the rotation speed output means 26 for outputting the rotation speed to the inverter 21 based on the rotation speed corrected and calculated by the air flow correction means 31, and the set temperature from the set temperature means 14, An opening calculation means 27 for calculating the opening of the mix damper 12, an opening output means 28 for operating the actuator 23 to a predetermined opening based on the opening calculated by the opening calculation means 27, and the control. Mode determining means operating mode switching means 29 based on the determination result switches the four-way switching valve 7 of 24, and an output control unit 30 for controlling the refrigerant throttle device 4.

Here, as shown in FIG. 3, the output temperature signal of the set temperature means 14 is converted into the rotation speed calculation means 2 in the air conditioning control means 20.
5, the rotation speed calculation means 25 refers to the characteristic curve a as shown in FIG.
The number of rotations corresponding to the output temperature signal of is calculated. Based on the signal from the air volume setting means 15, the air volume correction means 31 increases the degree of decrease in the rotation speed calculated by the rotation speed calculation means 25 as the air volume decreases. For example, FIG.
As shown in, when the air volume is the minimum air volume LO (1st speed), the degree of decrease is the largest as indicated by the straight line a, and the correction is performed, and when the air volume is the maximum air volume HI (4th speed), the straight line b is represented. The degree of decrease is corrected to be the smallest, and output to the rotation speed output means 26. The rotation speed output means 26 outputs a signal of this rotation speed to the inverter 21, and the inverter 21 drives the electric compressor 1 at this instructed rotation speed.

Therefore, in the cooling mode, under a condition where the heat load is small (for example, spring and autumn day and day), the set temperature is set to a low temperature, for example, the position of A in FIG. 4A to 1B (first range). In addition, when the air volume is set to the minimum air volume, the degree of decrease of the rotation speed by the air flow correction means 31 is the largest and the rotation speed of the electric compressor 1 is low (for example, 50 Hz), so that the extra cooling capacity is reduced. Therefore, the frequency of freezing of the heat exchanger in the vehicle interior can be reduced. Further, when the heat load is large (under hot summer in the summer), for example, if the set temperature is set to a low temperature and the air volume is set to the maximum air volume HI, the degree of decrease in the rotation speed by the air volume correction means 31 is the smallest and the maximum. Since the electric compressor 1 is driven at a rotation speed (for example, 120 Hz), the vehicle interior can be cooled with the maximum cooling capacity.

Further, in the dehumidifying and heating mode, when the heat load (heating load) is small (for example, spring, autumn morning, evening), the set temperature is set to a. When the temperature is set to, and the air volume is set to the minimum air volume,
Since the degree of decrease in the number of revolutions by the air volume correction means 31 is the largest and the number of revolutions of the electric compressor 1 is low (for example, 40 Hz), the extra heating capacity can be reduced, and the discharge pressure and the discharge temperature of the electric compressor 1 can be reduced. Can suppress the rise of. When the heat load (heating load) is small and the humidity is relatively high due to rain or the like, for example, if the air volume is set to the maximum air volume HI, the degree of decrease in the rotation speed by the air volume correction means 31 is the smallest (for example, 50 Hz). Since the electric compressor 1 is driven, the dehumidification amount can be increased and the vehicle interior can be heated.

Further, in the heating mode, under a condition where the heat load is small (for example, spring, autumn morning, and evening), the set temperature is set to a high temperature, for example, the position of d of U to D (third range) in FIG. When the air flow rate is set and the air flow rate is set to the minimum air flow rate, the degree of decrease of the rotation speed by the air flow correction means 31 is the largest and the rotation speed of the electric compressor 1 is low (for example, 50 Hz), so that the extra heating capacity is reduced. Therefore, the discharge pressure and discharge temperature of the electric compressor 1 can be prevented from rising. Also,
When the heat load is large, for example, set the set temperature to a high temperature,
If the air volume is set to the maximum air volume HI, the degree of decrease in the rotational speed by the air volume correction means 31 is the smallest, and the maximum rotational speed (for example, 1
Since the electric compressor 1 is driven at 20 Hz), the vehicle interior can be heated with the maximum heating capacity.

Here, the air volume correction means 31 uses the rotation speed calculated by the rotation speed calculation means 25 when the set air volume is maximum as a reference, and the rotation calculated by the rotation speed calculation means 25 becomes smaller as the set air volume decreases. Although the degree of decrease in the number is set to be large, in other words, the larger the set air volume is based on the rotational speed calculated by the rotational speed calculation means 25 when the set air volume is the minimum, the more the rotational speed calculation means 25 is set. Even if the degree of increase in the rotational speed calculated by the above is increased, the same operation and action are obtained.

FIG. 5 is a block diagram of an embodiment of the heat pump cooling / heating / dehumidifying control device for an electric vehicle according to the present invention.

The description of the structure of the refrigeration cycle is the same as that of the embodiment of claim 1, so that the description is omitted. The configuration of the control system is substantially the same as that of the embodiment of claim 1, so that only the differences will be described.

The outside air temperature detecting means 17 for detecting the temperature outside the passenger compartment and the air-conditioning control means 20 include a cooling mode when the set temperature from the set temperature means 14 is in the first range and a dehumidifying and heating mode when the set temperature is in the second range. Control mode determination means 24 for determining the mode and the heating range mode in the third range, and an outside air temperature correction means 32 for correcting the set temperature of the set temperature means 14 according to a signal from the outside air temperature detection means 17. A rotation speed calculation means 25 for calculating the rotation speed corresponding to the output temperature signal of the outside air temperature correction means 32, and a rotation for outputting the rotation speed to the inverter 21 based on the rotation speed calculated by the rotation speed calculation means 25. The opening calculation means 27 for calculating the opening of the mix damper 12 according to the set temperature from the number output means 26 and the set temperature means 14, and the actuation based on the opening calculated by the opening calculation means 27. The opening degree output means 28 for operating the eater 23 to a predetermined opening degree, the operation mode switching means 29 for switching the four-way switching valve 7 based on the determination result of the control mode determination means 24, and the refrigerant expansion device 4 are controlled. And output control means 30.

Therefore, when the set temperature means 14 is set between A and A as shown in FIG. 6, the cooling mode operation is performed. For example, the set temperature set by the set temperature means 14 is the outside air. FIG. 6 shows how the temperature correction means 32 makes a correction.
Shown in For example, since the set temperature is decreased as the outside air temperature exceeds 20 ° C. (for example, when the outside air temperature is 30 ° C., 1 ° C. or less compared to when the outside air temperature is 20 ° C .; the straight line a), the cooling load is large (outside air temperature However, the appropriate cooling capacity can be obtained.

Further, as shown in FIG. 6, when the set temperature means 14 is set to a range from W to D, the heating mode operation is performed. For example, the set temperature set by the set temperature means 14 is outside air. FIG. 6 shows how the temperature correction means 32 makes a correction. For example, the set temperature is increased as the outside air temperature falls below 20 ° C. (for example, when the outside air temperature is 10 ° C., the outside temperature 2
Since it is 1 ° C higher than at 0 ° C; the straight line of b),
An appropriate heating capacity can be obtained in response to a large heating load (low outside air temperature).

FIG. 7 is a block diagram of an embodiment of the heat pump cooling / heating / dehumidifying control device for an electric vehicle according to the present invention.

The description of the structure of the refrigeration cycle is the same as that of the embodiment of claim 1, and therefore the description thereof is omitted. The configuration of the control system is substantially the same as that of the embodiment of claim 1, so that only the differences will be described.

The inside air temperature detecting means 18 for detecting the temperature in the passenger compartment and the air conditioning control means 20 are used when the set temperature from the set temperature means 14 is in the first range, in the cooling mode, and in the second range, the dehumidifying and heating mode. Control mode determining means 24 for determining the mode and the heating mode in the third range, and an inside air temperature correcting means 33 for correcting the set temperature of the set temperature means 14 according to a signal from the inside air temperature detecting means 18. A rotation speed calculation means 25 for calculating the rotation speed corresponding to the output temperature signal of the inside air temperature correction means 33, and a rotation for outputting the rotation speed to the inverter 21 based on the rotation speed calculated by the rotation speed calculation means 25. The opening calculation means 27 for calculating the opening of the mick damper 12 according to the set temperature from the number output means 26 and the set temperature means 14, and the actuation based on the opening calculated by the opening calculation means 27. The opening degree output means 28 for operating the controller 23 to a predetermined opening degree, the operation mode switching means 29 for switching the four-way switching valve 7 based on the determination result of the control mode determination means 24, and the control of the refrigerant expansion device 4. And an output control means 30 for performing.

Therefore, when the set temperature means 14 is set between A and A as shown in FIG. 8, the cooling mode operation is performed, and the set temperature set by the set temperature means 14 is the inside air temperature correction. It shows how the correction is performed by the means 33. For example, since the set temperature is decreased as the inside air temperature exceeds 25 ° C (for example, when the inside air temperature is 35 ° C, 1 ° C lower than when the inside air temperature is 25 ° C; the straight line a), the cooling load is large (inside air temperature However, the appropriate cooling capacity can be obtained.

Further, as shown in FIG. 8, when the setting temperature setting means 14 is set between woo and d, the heating mode operation is performed. For example, the setting temperature set by the setting temperature means 14 is FIG. 8 shows how the temperature correction means 33 makes a correction. For example, the set temperature is increased as the inside air temperature falls below 25 ° C (for example, when the inside air temperature is 15 ° C, the inside air temperature is 2
Since it is 1 ° C higher than at 5 ° C; the straight line of b),
An appropriate heating capacity can be obtained in response to a large heating load (inside air temperature is low).

FIG. 9 is a block diagram of an embodiment of the heat pump cooling and heating dehumidification control device for an electric vehicle according to the present invention.

The description of the structure of the refrigeration cycle is the same as that of the embodiment of claim 1, so that the description is omitted. The configuration of the control system is substantially the same as that of the embodiment of claim 1, so that only the differences will be described.

The solar radiation amount detecting means 19 for detecting the solar radiation amount outside the vehicle compartment and the air-conditioning control means 20 are provided when the set temperature from the set temperature means 14 is in the first range when in the cooling mode and when in the second range when it is dehumidifying. Control mode determination means 24 for determining the heating mode and the heating mode in the third range, and the solar radiation amount detection means 1
Insolation amount correcting means 34 for correcting the set temperature of the setting temperature means 14 according to a signal from 9, and the solar radiation amount correcting means 3
4, a rotation speed calculation means 25 for calculating the rotation speed corresponding to the output temperature signal of 4, and a rotation speed output means 26 for outputting the rotation speed to the inverter 21 based on the rotation speed calculated by the rotation speed calculation means 25, Depending on the set temperature from the set temperature means 14, the opening degree calculation means 27 for calculating the opening degree of the mix damper 12, and the actuator 23 is operated to a predetermined opening degree based on the opening degree calculated by the opening degree calculation means 27. The opening degree output means 28, the operation mode switching means 29 that switches the four-way switching valve 7 based on the determination result of the control mode determination means 24, and the output control means 30 that controls the refrigerant expansion device 4. There is.

Therefore, the setting of the set temperature means 14 is performed as shown in FIG.
As described above, during the period between A and B, the cooling mode operation is performed, and the set temperature set by the set temperature means 14 is
The manner in which the correction is performed by the solar radiation amount correction means 34 is shown. For example, when the amount of solar radiation is 0 kcal / h · m ² , the characteristic is a straight line a. As the solar radiation exceeds 0, the set temperature is decreased (for example, when the solar radiation is 500 kcal / h · m ² , the solar radiation is 1 ° C lower than when it is 0 kcal / h · m ² ; An appropriate cooling capacity can be obtained in response to a large cooling load (a large amount of solar radiation).

When the setting of the set temperature means 14 is set between woo and d as shown in FIG. 10, the heating mode operation is performed. For example, the set temperature set by the set temperature means 14 is the solar radiation. FIG. 10 shows how the quantity correction means 34 makes a correction.
Shown in For example, it seems that the set temperature is decreased as the amount of solar radiation exceeds 0 kcal / h · m ² (for example, the amount of solar radiation is 500 k
With cal / h ・ m ² , the amount of solar radiation is 0 ° C lower than that at 0 kcal / h ・ m ² ; it is set to the straight line of b), so appropriate heating is performed in response to the reduction of the heating load (the amount of solar radiation is large). You can gain the ability.

The embodiments of claims 1 to 5 have been described above. However, if the invention is carried out in a combination of claims 1 and 3, claim 2 and 3, or claims 2 and 3, 4 and 5, for example. Further, higher effects can be expected, such as a reduction in the frequency of freezing during cooling and a reduction in the discharge temperature of the electric compressor 1 during heating. In addition, according to claims 1 to 5, the control mode, the rotation speed of the electric compressor, and the mix damper are used as the input elements mainly for the set temperature (the outside temperature, the inside temperature, and the solar radiation amount are corrected with respect to the set temperature). Although it is the content of calculating the opening degree, if the parameters such as the target temperature, the target outlet temperature, and the required heat load amount are replaced with the input elements, it can be controlled as an automatic air conditioner.

[0057]

【The invention's effect】

(Claim 1) According to the first means of the present invention, in the air conditioning control means, the set temperature from the set temperature means has a first cooling mode in a first range, a second dehumidifying and heating mode in a second range, and a third mode. The control mode determination means for determining the heating mode in the range of the range, the rotation speed calculation means for calculating the rotation speed of the motor of the electric compressor according to the set temperature from the set temperature means, and the set temperature from the set temperature means According to, since it has an opening degree calculating means for calculating the opening degree of the blowout temperature adjusting means for adjusting the temperature of the air blown into the passenger compartment, the control mode, by operating the set temperature means,
Since the rotational speed of the electric compressor and the opening degree of the blow-out temperature adjusting means are appropriately controlled at the same time, it is possible to easily obtain from cold air to warm air. In other words, the air conditioning operation of the electric vehicle can be performed with the same operation feeling as that of the manual air conditioning vehicle of the gasoline vehicle.

(Claim 2) According to the second means of the present invention, the first means, the air volume setting means for selecting the amount of air blown into the vehicle interior, and the air volume setting means or the vehicle interior air heat exchanger Based on the signal of the actual air volume of the blower, the smaller the set air volume or the actual air volume, the larger the air volume correction means for increasing the degree of decrease in the rotation speed calculated by the rotation speed calculation means. It is possible to prevent and reduce the excessive operation of the electric compressor (the set air volume is small and the rotation speed of the electric compressor is large) under the condition that the heating load is small, and the frequency of restarts is reduced, thus improving energy saving. You can also plan.

(Claim 3) According to the third means of the present invention, the first means, the outside air temperature detecting means for detecting the temperature outside the vehicle compartment, and the setting according to the signal from the outside air temperature detecting means. Since the outside air temperature correcting means for correcting the set temperature of the temperature means is provided, even if there is a change in the outside air, it is possible to reduce the change in the blowout temperature. Therefore, the frequency of changing and adjusting the set temperature can be reduced.

(Claim 4) According to the fourth means of the present invention, the first means, the inside air temperature detecting means for detecting the temperature in the passenger compartment, and the setting according to the signal from the inside air temperature detecting means are set. Since the inside air temperature correction means for correcting the set temperature of the temperature means is provided, the blowout temperature can be corrected according to the situation of the inside air. In other words, for example, in the cooling mode, the correction amount is increased when the temperature inside the vehicle is high in the hot summer weather, so the vehicle interior can be quickly lowered, and the correction amount decreases when the inside air temperature decreases. Therefore, proper air conditioning operation can be performed while saving energy. Therefore, the frequency of changing and adjusting the set temperature can be reduced.

(Claim 5) According to the fifth means of the present invention, according to the first means, the solar radiation amount detecting means for detecting the solar radiation amount outside the vehicle compartment, and the signal from the solar radiation amount detecting means. Since the solar radiation amount correction means for correcting the set temperature of the set temperature means is provided, the blowout temperature can be corrected according to the situation of the solar radiation amount. That is, for example, in the cooling mode, the correction amount is increased so that the set temperature is lowered when the amount of solar radiation is large in the hot summer, so that the blowout temperature can be lowered and the feeling of grief can be reduced. You can secure comfort. At the same time, the frequency of changing and adjusting the set temperature can be reduced.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an embodiment of a heat pump cooling and heating dehumidification control device for an electric vehicle according to claim 1.

FIG. 2 is a calculation explanatory diagram of a rotation speed calculation means and an opening degree calculation means described in FIG. 1 of claim 1;

FIG. 3 is a configuration diagram of an embodiment of a heat pump cooling / heating / dehumidifying control device for an electric vehicle according to claim 2;

FIG. 4 is a calculation explanatory view of the air volume correction means, the rotation speed calculation means, and the opening degree calculation means according to claim 2;

FIG. 5 is a configuration diagram of an embodiment of a heat pump cooling / heating / dehumidifying control device for an electric vehicle according to claim 3;

FIG. 6 is a calculation explanatory diagram of an outside air temperature correction means according to claim 3;

FIG. 7 is a configuration diagram of an embodiment of a heat pump cooling / heating / dehumidifying control device for an electric vehicle according to claim 4;

FIG. 8 is a calculation explanatory diagram of the inside air temperature correction means according to claim 4;

FIG. 9 is a configuration diagram of an embodiment of a heat pump cooling / heating / dehumidifying control device for an electric vehicle according to claim 5;

FIG. 10 is a calculation explanatory diagram of the solar radiation amount correction means described in FIG. 9 of claim 5;

FIG. 11 is a configuration diagram of an embodiment of a conventional heat pump cooling / heating dehumidification control device for an electric vehicle.

FIG. 12 is a calculation explanatory diagram of a rotation speed calculation unit shown in FIG. 11.

[Explanation of symbols]

 1 Electric Compressor 2 Outside Air Heat Exchanger 3 Blower for Outside Air Heat Exchanger 4 Refrigerant Throttling Device 5 Refrigerant Piping 6 Blower for Inside Air Heat Exchanger 7 Four-way Switching Valve 8 Inside Air Outlet 9 First Ventilation Circuit 10 1st vehicle interior air heat exchanger 11 2nd vehicle interior air heat exchanger 12 Mix damper 13 Air conditioning operation panel 14 Set temperature means 15 Air volume setting means 16 Register 17 Outside air temperature detecting means 18 Inside air temperature detecting means 19 Solar radiation Quantity detection means 20 Air conditioning control means 21 Inverter 22 Second ventilation circuit 23 Actuator 24 Control mode determination means 25 Rotation speed calculation means 26 Rotation speed output means 27 Opening calculation means 28 Opening output means 29 Operating mode switching means 30 Output control Means 31 Air volume correction means 32 Outside air temperature correction means 33 Inside air temperature correction means Compressor 34 Solar radiation Amount correcting means 35 Bypass circuit 36 First three-way switching valve 37 Second three-way switching valve 38 Vehicle interior / outside air introduction device 39 Ventilation circuit switching damper 40 Ventilation circuit switching actuator 41 First refrigerant expansion device 42 Second refrigerant expansion device Device 43 Control mode setting means

Claims (5)

[Claims] 1. An electric compressor having a built-in motor, set temperature means for setting the temperature corresponding to or related to the temperature of air blown into a vehicle compartment, and energizing the motor of the electric compressor to make the electric compressor a variable speed. An inverter driven by, an air conditioning control means for instructing the inverter the number of revolutions of the electric compressor, and an air conditioning control means for instructing the air conditioning control means to set the temperature from the set temperature means to a first range cooling mode, Control mode determination means for determining a dehumidifying heating mode in the second range and a heating mode in the third range, and setting from the set temperature means when the set temperature from the set temperature means is in the first range The higher the temperature is, the more the rotation speed is decreased, and when the set temperature from the set temperature means is in the second range, the rotation speed is fixed to a predetermined rotation speed or the set temperature of the set temperature means is higher. , The above When the set temperature from the set temperature means is in the third range, the number of turns is increased or decreased, and the higher the set temperature of the set temperature means is, the more the number of rotations is calculated. When the set temperature from the temperature means is in the first range, the outlet temperature adjusting means for adjusting the temperature of the air blown into the passenger compartment is fixed to the maximum cooling opening degree, and the set temperature from the set temperature means is in the second range. When the set temperature of the set temperature means is higher, the opening degree of the temperature adjusting means is changed in the heating opening direction from the maximum cooling opening degree to the maximum heating opening degree, and When the set temperature is in the third range, the higher the set temperature of the set temperature means is,
An operation mode switch that switches the operation mode of the heat pump cooling and heating dehumidifier based on the determination result of the control mode determination means and the opening operation means that changes the opening degree of the blowout temperature adjusting means in the heating direction or fixes the maximum heating opening degree Means, and a rotation speed output means for outputting the rotation speed to the inverter based on the rotation speed calculated by the rotation speed calculation means,
A heat pump cooling / heating dehumidification control device for an electric vehicle, comprising: an opening output means for operating the blowout temperature adjusting means to a predetermined opening based on the opening calculated by the opening calculating means. 2. The smaller the set air volume or the actual air volume, the smaller the rotation speed based on the air volume setting means for setting the air volume blown into the vehicle interior and the signal of the actual air volume of the air volume setting means or the air blower for the vehicle interior air heat exchanger. 2. The heat pump cooling and heating dehumidification control device for an electric vehicle according to claim 1, further comprising an air volume correction means for increasing the degree of decrease in the rotation speed calculated by the number calculation means. 3. An outside air temperature detecting means for detecting the temperature outside the passenger compartment, and an outside air temperature correcting means for correcting the set temperature of the set temperature means according to a signal from the outside air temperature detecting means. The heat pump cooling and heating dehumidification control device for an electric vehicle according to claim 1. 4. An inside air temperature detecting means for detecting the temperature inside the vehicle compartment, and an inside air temperature correcting means for correcting the set temperature of the set temperature means according to a signal from the inside air temperature detecting means. The heat pump cooling and heating dehumidification control device for an electric vehicle according to claim 1. 5. A solar radiation amount detecting means for detecting the amount of solar radiation outside the passenger compartment, and a solar radiation amount correcting means for correcting the set temperature of the setting temperature means according to a signal from the solar radiation amount detecting means. The heat pump cooling and heating dehumidification control device for an electric vehicle according to claim 1.