CN213273116U - Air conditioner compressor soft start circuit and air conditioner - Google Patents
Air conditioner compressor soft start circuit and air conditioner Download PDFInfo
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- CN213273116U CN213273116U CN202021580979.1U CN202021580979U CN213273116U CN 213273116 U CN213273116 U CN 213273116U CN 202021580979 U CN202021580979 U CN 202021580979U CN 213273116 U CN213273116 U CN 213273116U
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Abstract
The utility model discloses an air conditioner compressor soft start circuit and air conditioner, the first end of switch unit links to each other with outside little the control unit, the second end of switch unit with the fifth end of contactor unit links to each other, the third end ground connection of switch unit, the first end of contactor unit is established ties on the live wire, the second end of contactor unit with the first end of compressor links to each other, the third end of contactor unit with the second end of soft start unit, the fourth end of contactor unit with the first end of soft start unit links to each other, the fifth end of contactor unit with the second end of switch unit links to each other, the third end of soft start unit establishes ties on the zero line, the fourth end of soft start unit with the second end of compressor links to each other, the fifth end of soft start unit with the third end of compressor links to each other, therefore, soft start of the starting current of the compressor is realized, and the reliability of the circuit is improved.
Description
Technical Field
The application relates to the technical field of air conditioner compressors, in particular to a soft start circuit of an air conditioner compressor and an air conditioner.
Background
The air conditioner compressor functions to compress a driving refrigerant in an air conditioner refrigerant circuit. An air conditioner compressor is generally installed in an outdoor unit. The air conditioner compressor extracts the refrigerant from a low-pressure area, compresses the refrigerant and sends the compressed refrigerant to a high-pressure area for cooling and condensation, heat is emitted into air through the radiating fins, the refrigerant is changed from a gas state into a liquid state, and the pressure is increased.
The compressor of the current single-phase constant-speed air conditioner generally has larger starting current, the higher the voltage is, the larger the starting current is, not only can great impact be generated on a power grid, but also the requirement of certain regions on the starting current can not be met, and the compressor can not pass the test items of voltage fluctuation, flicker and the like in national standards GB-17625.3 and GB-17625.2. The starting current of the medium-high power compressor is very large, so that the requirements on devices are high.
Therefore, how to provide a soft start circuit for an air conditioner compressor to realize soft start of a compressor starting current and avoid the overlarge compressor starting current, so as to improve the reliability of the circuit is a technical problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
The utility model provides an air conditioner compressor soft start circuit and air conditioner for compressor starting current is too big among the solution prior art, can't guarantee the technical problem of circuit reliability.
In some embodiments of the present application, a soft start circuit of an air conditioner compressor includes a switch unit, a contactor unit, a soft start unit and a compressor,
the first end of the switch unit is connected with an external micro control unit, the second end of the switch unit is connected with the fifth end of the contactor unit, the third end of the switch unit is grounded, the first end of the contactor unit is connected in series with a live wire, the second end of the contactor unit is connected with the first end of the compressor, the third end of the contactor unit is connected with the second end of the soft start unit, the fourth end of the contactor unit is connected with the first end of the soft start unit, the fifth end of the contactor unit is connected with the second end of the switch unit, the third end of the soft start unit is connected in series with a zero line, the fourth end of the soft start unit is connected with the second end of the compressor, and the fifth end of the soft start unit is connected with the third end of the compressor;
the switch unit is used for providing a starting signal for the soft starting circuit of the air conditioner compressor;
the contactor unit is used for starting the power supply of the soft start unit through the start signal;
the soft start unit is used for controlling the compressor to carry out soft start;
the compressor is used for performing soft start operation based on the soft start unit.
In some embodiments of the present invention, in the soft start circuit of the air conditioner compressor, the switch unit includes a second resistor, a third resistor and a transistor,
the first end of the second resistor is the first end of the switch unit, the collector of the triode is the second end of the switch unit, the common junction of the emitter of the triode and the second end of the third resistor is the third end of the switch unit, and the common junction of the second end of the second resistor and the first end of the third resistor is connected with the base of the triode.
In some embodiments of the present invention, in the soft start circuit of the compressor of the air conditioner, the contactor unit includes a relay, an ac contactor and a diode,
the third end of relay does the first end of contactor unit, ac contactor's fourth end does the second end of contactor unit, ac contactor's first end does the third end of contactor unit, the fourth end of relay with the common junction of ac contactor's second end does the fourth end of contactor unit, the second end of relay with the common junction of the positive pole of diode does the fifth end of contactor unit, the first end of relay with the common junction of the negative pole of diode connects direct current voltage source.
In some embodiments of the present invention, in the soft start circuit of the compressor of the air conditioner, the soft start unit includes a soft start module, a first resistor, a first capacitor and a second capacitor,
the first end of the soft start module is the first end of the soft start unit, the second end of the soft start module is the second end of the soft start unit, the common junction of the third end of the soft start module and the first end of the second capacitor is the third end of the soft start unit, the common junction of the second end of the first resistor, the second end of the first capacitor and the second end of the second capacitor is the fourth end of the soft start unit, the fifth end of the soft start module is the fifth end of the soft start unit, and the common junction of the first end of the first resistor and the first end of the first capacitor is connected with the fourth end of the soft start module.
The utility model also provides an air conditioner, include as above the soft start circuit of air conditioner compressor, still include:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
one of the outdoor heat exchanger and the indoor heat exchanger works for the condenser, and the other works for the evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
and the indoor coil temperature sensor is used for detecting the temperature of the indoor coil.
By applying the technical scheme, a first end of a switch unit is connected with an external micro control unit, a second end of the switch unit is connected with a fifth end of a contactor unit, a third end of the switch unit is grounded, the first end of the contactor unit is connected in series with a live wire, the second end of the contactor unit is connected with the first end of a compressor, the third end of the contactor unit is connected with the second end of a soft start unit, a fourth end of the contactor unit is connected with the first end of the soft start unit, the fifth end of the contactor unit is connected with the second end of the switch unit, the third end of the soft start unit is connected in series with a zero wire, the fourth end of the soft start unit is connected with the second end of the compressor, and the fifth end of the soft start unit is connected with the third end of the compressor; therefore, the starting current of the compressor is prevented from being overlarge, and the reliability of the circuit is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a perspective view showing an external appearance of an air conditioner according to an embodiment.
Fig. 2 is a circuit diagram schematically showing the configuration of an air conditioner according to the embodiment.
Fig. 3 is a block diagram showing an outline of the configuration of the control system of the air conditioner.
Fig. 4 shows a schematic structural diagram of a soft start circuit of an air conditioner compressor according to an embodiment of the present invention.
Fig. 5 shows a schematic structural diagram of a soft start circuit of an air conditioner compressor according to another embodiment of the present invention.
Description of the reference symbols
1: an air conditioner; 2: an outdoor unit; 3: an indoor unit; 10: a refrigerant circuit; 11: a compressor; 12: a four-way switching valve; 13: an outdoor heat exchanger;
14: an expansion valve; 16: an indoor heat exchanger; 21: an outdoor fan; 31: an indoor fan; 32: an indoor temperature sensor; 33: an indoor heat exchanger temperature sensor;
63: a vertical baffle; 64, 65: a horizontal baffle.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
The air conditioner 1 shown in fig. 1 includes: the indoor unit 3 is exemplified by an indoor unit (shown in the figure), and the indoor unit is usually mounted on an indoor wall surface WL or the like. For another example, an indoor cabinet (not shown) is also an indoor unit of the indoor unit.
The outdoor unit 2 is generally installed outdoors and used for heat exchange in an indoor environment. In the illustration of fig. 1, the outdoor unit 2 is indicated by a broken line because the outdoor unit 2 is located outdoors on the opposite side of the indoor unit 3 with respect to the wall surface WL.
Fig. 2 shows a circuit configuration of an air conditioner 1, and the air conditioner 1 includes a refrigerant circuit 10, and is capable of executing a vapor compression refrigeration cycle by circulating a refrigerant in the refrigerant circuit 10. The indoor unit 3 and the outdoor unit 2 are connected by a connecting pipe 4 to form a refrigerant circuit 10 in which a refrigerant circulates.
Further, as shown in fig. 3, the air conditioner 1 is provided with a control unit 50 for controlling the operation of each component in the air conditioner inside so that each component of the air conditioner 1 operates to realize each predetermined function of the air conditioner. The air conditioner 1 is further provided with a remote controller 5, and the remote controller 5 has a function of communicating with the control unit 50 using, for example, infrared rays or other communication methods. The remote controller 5 is used for various controls of the air conditioner by a user, and interaction between the user and the air conditioner is realized.
As described in the background art, in the prior art, the starting current of the compressor of the single-phase constant-speed air conditioner is generally large, and the higher the voltage is, the larger the starting current is, which not only generates a great impact on the power grid, but also cannot meet the requirement of some areas on the starting current, and cannot pass the test items of voltage fluctuation, flicker and the like in the national standards GB-17625.3 and GB-17625.2. The starting current of the medium-high power compressor is very large, so that the requirements on devices are high. Therefore, the prior art can not avoid the overlarge starting current of the compressor and can not ensure the reliability of the circuit.
In order to solve the above problems, the present application provides a soft start circuit for an air conditioner compressor, wherein a first terminal of a switch unit is connected to an external micro control unit, the second end of the switch unit is connected with the fifth end of the contactor unit, the third end of the switch unit is grounded, the first end of the contactor unit is connected in series on the live wire, the second end of the contactor unit is connected with the first end of the compressor, the third end of the contactor unit is connected with the second end of the soft start unit, the fourth end of the contactor unit is connected with the first end of the soft start unit, the fifth end of the contactor unit is connected with the second end of the switch unit, the third end of the soft start unit is connected in series on a zero line, the fourth end of the soft start unit is connected with the second end of the compressor, and the fifth end of the soft start unit is connected with the third end of the compressor; therefore, the starting voltage and the starting current of the air conditioner compressor can be intelligently adjusted, the instantaneous current and the instantaneous power of the compressor during starting are effectively reduced, the compressor is protected, the service life of the compressor is prolonged, the impact influence on a power grid caused by starting of a high-power air conditioner is reduced, and the reliability of a circuit is improved.
Fig. 4 is a schematic structural diagram of a soft start circuit of an air conditioner compressor according to an embodiment of the present invention,
the soft start circuit of the air conditioner compressor comprises a switch unit 101, a contactor unit 102, a soft start unit 103 and a compressor 104,
a first terminal of the switch unit 101 is connected to an external micro control unit, a second terminal of the switch unit 101 is connected to a fifth terminal of the contactor unit 102, the third terminal of the switch unit 101 is grounded, the first terminal of the contactor unit 102 is connected in series to the live line LIN, a second end of the contactor unit 102 is connected with a first end of the compressor 104, a third end of the contactor unit 102 is connected with a second end of the soft start unit 103, the fourth terminal of the contactor unit 102 is connected to the first terminal of the soft start unit 103, a fifth terminal of the contactor unit 102 is connected to a second terminal of the switching unit 101, a third end of the soft start unit 103 is connected in series to a zero line NIN, a fourth end of the soft start unit 103 is connected to a second end of the compressor 104, and a fifth end of the soft start unit 103 is connected to the third end of the compressor;
the switch unit 101 is used for providing a starting signal for the soft starting circuit of the air conditioner compressor;
the contactor unit 102 is used for starting the power supply of the soft start unit 103 through the start signal;
the soft start unit 103 is configured to control the compressor 104 to perform soft start;
the compressor 104 is configured to perform a soft start operation based on the soft start unit 103.
Specifically, the switch unit 101 provides a start signal for the soft start circuit of the air conditioner compressor, the contactor unit 102 starts the power supply of the soft start unit 103 through the start signal, the soft start unit 103 controls the compressor 104 to perform soft start, and the compressor 104 performs soft start according to the soft start unit 103, so that the instantaneous current and instantaneous power of the compressor 104 during start are reduced.
In order to stably provide the starting signal for the soft start circuit of the air conditioner compressor, in the preferred embodiment of the present application, as shown in fig. 5, the switch unit 101 includes a second resistor R2, a third resistor R3 and a transistor V2,
the first end of the second resistor R2 is the first end of the switch unit 101, the collector of the triode V2 is the second end of the switch unit 101, the common junction of the emitter of the triode V2 and the second end of the third resistor R3 is the third end of the switch unit, and the common junction of the second end of the second resistor R2 and the first end of the third resistor R3 is connected to the base of the triode V2.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and those skilled in the art may select other structures for providing the start signal for the soft start circuit of the air conditioner compressor according to the actual situation, which does not affect the protection scope of the present application.
In order to normally start the power supply of the soft start unit, in the preferred embodiment of the present application, as shown in fig. 5, the contactor unit 101 includes a relay K2, an ac contactor K1 and a diode V1,
the third end of relay K2 is the first end of contactor unit 102, the fourth end of ac contactor K1 is the second end of contactor unit 102, the first end of ac contactor K1 is the third end of contactor unit 102, the fourth end of relay K2 with the common junction of the second end of ac contactor K1 is the fourth end of contactor unit 102, the second end of relay K2 with the common junction of the positive pole of diode V1 is the fifth end of contactor unit 102, the first end of relay K2 with the common junction of the negative pole of diode V1 connects direct current voltage source.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and those skilled in the art may select other structures for starting the soft start unit according to practical situations, which does not affect the protection scope of the present application.
In order to normally control the compressor to perform a soft start, in a preferred embodiment of the present application, as shown in fig. 5, the soft start unit 103 includes a soft start module M1, a first resistor R1, a first capacitor C1 and a second capacitor C2,
a first end of the soft-start module M1 is a first end of the soft-start unit 103, a second end of the soft-start module M1 is a second end of the soft-start unit 103, a common junction of a third end of the soft-start module M1 and a first end of the second capacitor C2 is a third end of the soft-start unit 103, a common junction of a second end of the first resistor R1, a second end of the first capacitor C1, and a second end of the second capacitor C2 is a fourth end of the soft-start unit 103, a fifth end of the soft-start module M1 is a fifth end of the soft-start unit 103, and a common junction of the first end of the first resistor R1 and a first end of the first capacitor C1 is connected to the fourth end of the soft-start module M1.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and those skilled in the art may select other structures for controlling the compressor to perform soft start according to the actual situation, which does not affect the protection scope of the present application.
The operation principle of the soft start circuit of the air conditioner compressor in the embodiment of the present application is described below with reference to fig. 5:
in the circuit shown in fig. 5, the KM6 terminal of the soft START module M1 is connected to the third terminal of the contactor unit 102, the CON terminal is connected to the fourth terminal of the contactor unit 102, the N terminal is connected to the first terminal of the second capacitor C2, the first terminal of the second capacitor C2 is connected to the live line LIN of the power supply, the second terminal of the second capacitor C2 is connected to the second terminal of the first capacitor C1, the first terminal of the first capacitor C1 is connected to the START terminal of the soft START module M1, the first resistor R1 is connected in parallel to the two terminals of the first capacitor for current leakage, and the COMP-R terminal of the soft START module M1 is connected to the START winding R of the compressor 104. Triode V2 is used for driving relay K2, relay K2 is used for controlling the on-off of AC contactor K1, when compressor 104 has the start-up demand, MCU output high level signal makes triode V2 switch on, thereby make relay K2 actuation, power live wire LIN connects the third end of AC contactor K1, make AC contactor K1 actuation, the common junction of the fourth end of relay K2 and the second end of AC contactor K1 is connected to the KM6 end of soft start module M1, for the inside start power of module.
During soft START, a normally open contact between the START end and the N end of the soft START module M1 is connected, so that the second capacitor C2 is connected in parallel with the first capacitor C1, the capacitor during START is increased, and the START torque is increased. Meanwhile, the voltage is regulated and output between the COMP-R end and the N end through the silicon controlled rectifier, so that the working voltage of the compressor 104 is slowly increased, and the starting current of the compressor 104 is reduced. After the soft START is finished, the normally open contact of the relay between the START end and the N end is disconnected, so that the first capacitor C1 and the second capacitor C2 recover a normal connection mode, meanwhile, the normally closed contact of the relay between the COMP-R end and the N end is closed, the silicon controlled voltage regulating circuit is in short circuit, normal control is recovered, and the soft START action is finished.
By applying the technical scheme, a first end of a switch unit is connected with an external micro control unit, a second end of the switch unit is connected with a fifth end of a contactor unit, a third end of the switch unit is grounded, the first end of the contactor unit is connected in series with a live wire, the second end of the contactor unit is connected with the first end of a compressor, the third end of the contactor unit is connected with the second end of a soft start unit, a fourth end of the contactor unit is connected with the first end of the soft start unit, the fifth end of the contactor unit is connected with the second end of the switch unit, the third end of the soft start unit is connected in series with a zero wire, the fourth end of the soft start unit is connected with the second end of the compressor, and the fifth end of the soft start unit is connected with the third end of the compressor; therefore, the starting voltage and the starting current of the air conditioner compressor can be intelligently adjusted, the instantaneous current and the instantaneous power of the compressor during starting are effectively reduced, the compressor is protected, the service life of the compressor is prolonged, the impact influence on a power grid caused by starting of a high-power air conditioner is reduced, and the reliability of a circuit is improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (5)
1. A soft start circuit of an air conditioner compressor is characterized in that the circuit comprises a switch unit, a contactor unit, a soft start unit and a compressor,
the first end of the switch unit is connected with an external micro control unit, the second end of the switch unit is connected with the fifth end of the contactor unit, the third end of the switch unit is grounded, the first end of the contactor unit is connected in series with a live wire, the second end of the contactor unit is connected with the first end of the compressor, the third end of the contactor unit is connected with the second end of the soft start unit, the fourth end of the contactor unit is connected with the first end of the soft start unit, the fifth end of the contactor unit is connected with the second end of the switch unit, the third end of the soft start unit is connected in series with a zero line, the fourth end of the soft start unit is connected with the second end of the compressor, and the fifth end of the soft start unit is connected with the third end of the compressor;
the switch unit is used for providing a starting signal for the soft starting circuit of the air conditioner compressor;
the contactor unit is used for starting the power supply of the soft start unit through the start signal;
the soft start unit is used for controlling the compressor to carry out soft start;
the compressor is used for performing soft start operation based on the soft start unit.
2. The air conditioner compressor soft start circuit as claimed in claim 1, wherein said switching unit includes a second resistor, a third resistor and a transistor,
the first end of the second resistor is the first end of the switch unit, the collector of the triode is the second end of the switch unit, the common junction of the emitter of the triode and the second end of the third resistor is the third end of the switch unit, and the common junction of the second end of the second resistor and the first end of the third resistor is connected with the base of the triode.
3. The air conditioner compressor soft start circuit as set forth in claim 1, wherein said contactor unit includes a relay, an AC contactor and a diode,
the third end of relay does the first end of contactor unit, ac contactor's fourth end does the second end of contactor unit, ac contactor's first end does the third end of contactor unit, the fourth end of relay with the common junction of ac contactor's second end does the fourth end of contactor unit, the second end of relay with the common junction of the positive pole of diode does the fifth end of contactor unit, the first end of relay with the common junction of the negative pole of diode connects direct current voltage source.
4. The air conditioner compressor soft start circuit as claimed in claim 1, wherein said soft start unit comprises a soft start module, a first resistor, a first capacitor and a second capacitor,
the first end of the soft start module is the first end of the soft start unit, the second end of the soft start module is the second end of the soft start unit, the common junction of the third end of the soft start module and the first end of the second capacitor is the third end of the soft start unit, the common junction of the second end of the first resistor, the second end of the first capacitor and the second end of the second capacitor is the fourth end of the soft start unit, the fifth end of the soft start module is the fifth end of the soft start unit, and the common junction of the first end of the first resistor and the first end of the first capacitor is connected with the fourth end of the soft start module.
5. An air conditioner characterized in that the air conditioner comprises the air conditioner compressor soft start circuit according to any one of claims 1 to 4, and further comprises:
the refrigerant circulation loop circulates the refrigerant in a loop formed by the compressor, the condenser, the expansion valve, the evaporator, the four-way valve and the pressure reducer;
the compressor is used for compressing low-temperature and low-pressure refrigerant gas into high-temperature and high-pressure refrigerant gas and discharging the high-temperature and high-pressure refrigerant gas to the condenser;
one of the outdoor heat exchanger and the indoor heat exchanger works for the condenser, and the other works for the evaporator;
the four-way valve is used for controlling the flow direction of the refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger and the indoor heat exchanger between the condenser and the evaporator;
an indoor environment temperature sensor for detecting an indoor environment temperature;
and the indoor coil temperature sensor is used for detecting the temperature of the indoor coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021580979.1U CN213273116U (en) | 2020-08-03 | 2020-08-03 | Air conditioner compressor soft start circuit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021580979.1U CN213273116U (en) | 2020-08-03 | 2020-08-03 | Air conditioner compressor soft start circuit and air conditioner |
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| Publication Number | Publication Date |
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| CN213273116U true CN213273116U (en) | 2021-05-25 |
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| CN202021580979.1U Active CN213273116U (en) | 2020-08-03 | 2020-08-03 | Air conditioner compressor soft start circuit and air conditioner |
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