CN217900225U - Air conditioner - Google Patents
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- CN217900225U CN217900225U CN202222002961.9U CN202222002961U CN217900225U CN 217900225 U CN217900225 U CN 217900225U CN 202222002961 U CN202222002961 U CN 202222002961U CN 217900225 U CN217900225 U CN 217900225U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The utility model provides an air conditioner, it includes: a four-way valve; a compressor having an air suction port and an air discharge port for compressing a refrigerant; the exhaust port is connected with a first interface of the four-way valve, and the suction port is connected with a third interface of the four-way valve; a first port of the outdoor heat exchanger is connected with a second interface of the four-way valve; a first port of the indoor heat exchanger is connected with a fourth interface of the four-way valve; the two ends of the throttling component are respectively connected with the second port of the indoor heat exchanger and the second port of the outdoor heat exchanger; the electromagnetic heating device is sleeved outside the throttling component; when the throttling component is blocked by oil in a preset state, the electromagnetic heating device heats the throttling component so as to heat the lubricating oil blocked in the throttling component. The utility model discloses a set up electromagnetic heating device heating throttling element and solve oily stifled problem, have simple structure, the rate of heating is fast, efficient advantage, can melt lubricating oil fast, avoid the compressor idle running, improved the security of air conditioner.
Description
Technical Field
The utility model belongs to the technical field of the air conditioner, especially, relate to an air conditioner.
Background
When an environment-friendly refrigerant R290 refrigerant used by the existing air conditioner is used as a flowing working medium in a refrigerant circulation loop and the low-temperature heating working condition and the defrosting working condition are mutually converted, lubricating oil is easy to separate out and block throttling components such as capillary tubes, expansion tubes and the like with small flow areas due to low solubility of the lubricating oil at low temperature, so that the operation of a compressor is influenced.
In the prior art, the technical means for improving the oil blockage include increasing the refrigerant filling amount, electrically heating and melting the oil blockage position, changing the working frequency of the compressor and the like. In the existing mode, the requirement on the reliability of an air conditioning system is high due to the change of working frequency and the like in preventive measures, and the air conditioning system is easy to lose efficacy under extreme working conditions so as to cause the machine to stop; and the increased refrigerant charge will cause higher safety risk, and is not suitable for flammable refrigerant R290; meanwhile, the heating efficiency of the resistance heating mode is low, the heating speed is low, and the user experience under the low-temperature heating working condition is seriously influenced. Therefore, in a new stage of R290 refrigerant popularization, how to effectively prevent the throttle part from being blocked when the air conditioner performs low-temperature heating and defrosting conversion becomes one of the problems to be solved in the technical field of the air conditioner at present.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving one of the technical problems in the related art at least to a certain extent. For this purpose,
according to an embodiment of the present disclosure, there is provided an air conditioner including:
a four-way valve;
the compressor is provided with a suction port and an exhaust port and used for compressing a refrigerant, the exhaust port is connected with a first interface of the four-way valve, and the suction port is connected with a third interface of the four-way valve;
the first port of the outdoor heat exchanger is connected with the second interface of the four-way valve;
a first port of the indoor heat exchanger is connected with a fourth interface of the four-way valve;
two ends of the throttling component are respectively connected with the second port of the indoor heat exchanger and the second port of the outdoor heat exchanger;
the electromagnetic heating device is sleeved outside the throttling component;
when the throttling component is blocked by oil in a preset state, the electromagnetic heating device heats the throttling component so as to heat the lubricating oil blocked in the throttling component.
Through establishing electromagnetic heating device at the outside cover of throttle part, improved the throttle part and in the state of predetermineeing that low temperature heats the problem that oil is stifled when state interconversion with the state of defrosting easily, compare in traditional heating methods, electromagnetic heating device's rate of heating is fast, efficient, can melt lubricating oil fast to avoid the compressor to be in idle running state, improved air conditioning system's security.
According to an embodiment of the present disclosure, the electromagnetic heating apparatus includes:
the magnetic sleeve is sleeved outside the throttling component;
the electromagnetic coil is wound on the outer side of the magnetic sleeve;
the input end of the control assembly is electrically connected with a power circuit of the air conditioner, the output end of the control assembly is electrically connected with the electromagnetic coil, and the output end of the control assembly outputs alternating voltage;
the output end of the control assembly is electrically connected with the electromagnetic coil, so that the electromagnetic coil generates an alternating magnetic field, the magnetic sleeve is positioned in the alternating magnetic field to generate eddy current to generate heat, and the electromagnetic coil does not generate heat during electromagnetic heating, so that the electromagnetic coil can be heated to a higher temperature, the heat efficiency is high, the maintenance cost is low, the service life is long, accurate temperature control can be realized, and the operation reliability of the air conditioning system is improved.
According to an embodiment of the present disclosure, the electromagnetic heating device further includes a temperature detection device, the temperature detection device is mounted on the outer surface of the magnetic sleeve, and the temperature detection device detects the temperature of the outer surface of the magnetic sleeve. The throttle part is protected from overtemperature by arranging the temperature detection device, so that the condition that the throttle part is damaged due to overhigh temperature is avoided, and the safety performance of the air conditioner is further improved.
According to the embodiment of the present disclosure, the control component includes a rectification inverter unit and a power switch, the rectification inverter unit is electrically connected between the power circuit and the electromagnetic coil, the power switch is electrically connected between the electromagnetic coil and the rectification inverter unit, and the power switch is used for controlling the on/off of a circuit between the electromagnetic coil and the power circuit; alternating current of low frequency is rectified and converted into high-frequency voltage through the rectification inversion unit, and high-frequency current changing at high speed flows through the electromagnetic coil to generate a high-frequency alternating magnetic field, so that the rapid heating effect is achieved.
According to an embodiment of the present disclosure, the air conditioner further includes:
the main processing module is electrically connected with the control assembly;
the first pressure sensor is arranged at a first end of the throttling component and used for detecting the pressure of the refrigerant flowing through the first end;
the second pressure sensor is arranged at a second end of the throttling component and used for detecting the pressure of the refrigerant flowing through the second end;
the first pressure sensor and the second pressure sensor are both electrically connected with the main processing module.
The main processing module judges whether oil blockage occurs according to the pressure of the downstream refrigerant in the refrigerant flow direction of the throttling component, and then determines whether to start the electromagnetic heating device to solve the oil blockage problem, and the method is simple and convenient.
According to the embodiment of the disclosure, the main processing module comprises a judging unit, a data acquisition unit and a data processing unit, wherein the judging unit and the data acquisition unit are both electrically connected with the data processing unit; and/or the main processing module is electrically connected with the compressor; the main processing module can judge whether oil blockage occurs according to the running power of the compressor, so that whether the electromagnetic heating device is started or not is determined, and the compressor is prevented from being damaged.
According to the embodiment of the disclosure, a temperature detection device is arranged at the exhaust port of the compressor, and the temperature sensor detects the temperature of the exhaust port of the compressor; the oil blockage problem can be determined by the temperature at the air outlet, and the application range is wide.
According to the embodiment of the disclosure, a heat conduction layer is arranged between the magnetic sleeve and the throttling component or the magnetic sleeve and the throttling component are in interference fit through a pipe expanding process; and/or the magnetic sleeve is a stainless steel sleeve; has good heat-conducting property.
According to an embodiment of the present disclosure, the air conditioner further includes:
a chassis;
the outdoor shell is arranged on the chassis and defines an installation cavity with the chassis, and the four-way valve, the compressor and the outdoor heat exchanger are all arranged in the installation cavity;
the electric control box assembly is arranged in the installation cavity and comprises an electric control box body, and the control assembly is arranged in the electric control box body; the control component is integrated in the electric control box body, so that the integrated application is facilitated.
According to the embodiment of the disclosure, the refrigerant is an R290 refrigerant, the throttling component is a throttling short pipe or a capillary tube or an electronic expansion valve, and the preset state is a working state when the air conditioner is mutually converted between a low-temperature heating state and a defrosting state; the electromagnetic heating device is applicable to different throttling components.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of an air conditioner according to an embodiment of the present disclosure;
fig. 2 is a partial structural view of an outdoor unit of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a refrigerant circulation circuit according to an embodiment of the disclosure;
fig. 4 is a schematic structural view of an electromagnetic heating apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another refrigerant circulation circuit according to an embodiment of the disclosure;
FIG. 6 is a schematic structural diagram of another electromagnetic heating apparatus according to an embodiment of the present disclosure;
fig. 7 is a schematic diagram of a low temperature heating state conversion frost state according to an embodiment of the disclosure;
FIG. 8 is a schematic diagram illustrating a defrosting state to a low temperature heating state according to an embodiment of the disclosure;
fig. 9 is a schematic diagram of a circuit configuration of an air conditioner according to an embodiment of the present disclosure;
fig. 10 is a block diagram of a main processing module according to an embodiment of the present disclosure.
In the above figures: an air conditioner 100; a connecting pipe 10; an air conditioner outdoor unit 20; a chassis 201; an outdoor enclosure 202; a front panel 2021; side panels 2022; a cover plate 2023; an air outlet 203; an air outlet mask 204; an indoor air-conditioning unit 30; an indoor cabinet 301; an indoor fan 302; an oil blocked zone 40; a compressor 1; a liquid storage barrel 11; a compressor body 12; a four-way valve 2; an outdoor heat exchanger 3; a throttle member 4; an indoor heat exchanger 5; an electromagnetic heating device 6; a magnetic sleeve 61; an electromagnetic coil 62; a control assembly 63; a power switch 631; an alternating power supply 632; a temperature detection device 64; an electronic control box 7; a pressure sensor 8; a first pressure sensor 81; a second pressure sensor 82; a main processing module 9; a determination unit 91; a data acquisition unit 92; a data processing unit 93.
Detailed Description
The present invention is specifically described below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.
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 low-temperature and low-pressure state and discharges the refrigerant gas in a high-temperature and high-pressure state. 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 air conditioner includes an air conditioner indoor unit and an air conditioner outdoor unit, the air conditioner outdoor unit is a part of a refrigeration cycle including a compressor and an outdoor heat exchanger, the air conditioner indoor unit includes an indoor heat exchanger, and an expansion valve may be provided in the air conditioner indoor unit or the air conditioner outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.
The present invention provides an air conditioner 100, and the air conditioner 100 is described below with reference to fig. 1 to 10, wherein fig. 1 is a schematic structural diagram of the air conditioner 100.
Referring to fig. 1, the air conditioner 100 includes an indoor cabinet 301, the indoor cabinet 301 forms an external appearance of an indoor unit 30 of the air conditioner, the indoor cabinet 301 forms an air inlet and an air outlet, the air inlet and the air outlet are communicated to form an air duct, the indoor unit 30 of the air conditioner can be a hanging unit or a cabinet unit, when the indoor unit 30 of the air conditioner is a hanging unit, the air outlet is located at a front side of the indoor cabinet 301, and the air inlet can be located at an upper side or left and right sides of the indoor cabinet 301. The indoor unit 30 is hung on a wall when it is on-hook, and its rear side is placed against the wall.
It should be noted that the direction described herein is based on the direction of the user facing the air conditioner, wherein the left side and the right side are distinguished by the direction of the user facing the air conditioner, and the side facing the user when the air conditioner is used is defined as the front side, and the opposite side is defined as the rear side.
When the indoor air conditioner is a cabinet air conditioner, the air conditioner air outlet can be positioned on the front side and/or the left side, the right side and/or the upper side of the machine shell, and the air conditioner air inlet can be positioned on the rear side and/or the upper side and/or the left side and the right side of the indoor machine shell.
The air inlet of the air conditioner can be provided with an air inlet grille for filtering air and preventing larger impurities from entering the air channel. The air outlet of the air conditioner can be provided with an air deflector for guiding the air conditioner air exhausted by the indoor unit of the air conditioner.
The air deflector is approximately rectangular, the cross section of the air deflector is arc-shaped or flat, and indoor air coming out of the air outlet of the air conditioner blows out along the air deflector.
Specifically, the air deflector is rotatably connected to the air outlet of the air conditioner and used for opening or closing the air outlet of the air conditioner, and when the air outlet of the air conditioner is opened by the air deflector, the air deflector is used for guiding air exhausted from an indoor unit of the air conditioner.
And an air guide grid can be arranged at the air outlet of the air conditioner, so that the air at the air outlet of the air conditioner can be guided. The air guide grille can be further provided with the micropores, indoor air can be discharged from the micropores, and air outlet at the air outlet of the air conditioner can be softened.
The air conditioner 100 further comprises an indoor heat exchanger 5 and an indoor fan 302, the indoor heat exchanger 5 and the indoor fan 302 are both arranged in the air duct, the indoor heat exchanger 5 is used for exchanging heat with indoor air, the indoor fan 302 is used for introducing air into the air duct from an air inlet of the air conditioner, and the air is discharged from an air outlet of the air conditioner after exchanging heat through the indoor heat exchanger 5, so that the air conditioner can refrigerate and heat.
The air conditioner 100 further includes a bottom chassis 201 and an outdoor unit casing 202, the outdoor unit casing 202 is disposed on the bottom chassis 201 to form an appearance of the air conditioner outdoor unit 20, the outdoor unit casing 202 is connected to the bottom chassis 201 to define an installation chamber, an air inlet and an air outlet 203 are formed on the outdoor unit casing 202, and the air inlet is communicated with the air outlet 203 to form an outdoor air duct.
The outdoor unit casing 202 includes a front panel 2021 located on the front side, a back panel provided behind the front panel 2021, a pair of side panels 2022 provided on the left and right sides of the front panel 2021 and the back panel, and a cover panel 2023 provided above the chassis 201.
The air conditioner 100 further includes an outdoor fan disposed in the outdoor air duct and opposite to the air outlet 203, and air outside the outdoor housing 202 enters the installation chamber through the air inlet and is finally discharged through the air outlet 203 under the action of the outdoor fan.
In this embodiment, the air inlet is disposed on the side panel on the left side of the outdoor housing 202, and the number of air inlets is multiple, so that the weight of the outdoor housing 202 is reduced, and the heat dissipation efficiency is improved.
The air outlet 203 is disposed on the front panel 2021, the air outlet 203 is disposed near the air inlet, an air outlet mask 204 is disposed at the air outlet 203, the air outlet mask 204 blows out the air discharged from the air outlet 203 in an outward expanding manner, the air outlet area is enlarged, and the air outlet 203 blows out at a reduced air speed on the basis of ensuring the same air volume, thereby reducing the noise of the outdoor unit 20 of the air conditioner.
The air conditioner 100 further comprises a four-way valve 2, a compressor 1, an outdoor heat exchanger 3 and a throttling component 4 which are arranged in the installation cavity, wherein the compressor 1, the four-way valve 2, the outdoor heat exchanger 3, the throttling component 4 and the indoor heat exchanger 5 form a refrigerant circulation loop, so that a refrigerant can circulate in the refrigerant circulation loop, and the refrigerant is an environment-friendly refrigerant R290 refrigerant.
In this embodiment, the compressor 1 may be disposed near the right side in the installation chamber, and the outdoor fan and the outdoor heat exchanger 3 may be disposed near the left side in the installation chamber.
The compressor 1 has a suction port and a discharge port for compressing a refrigerant, that is, the compressor 1 is configured to compress a low-temperature and low-pressure refrigerant gas into a high-temperature and high-pressure refrigerant gas and discharge the refrigerant gas to the condenser. The compressor 1 comprises a liquid storage cylinder 11 and a compressor body 12 connected with the liquid storage cylinder 11, wherein the liquid storage cylinder 11 is provided with an air suction port, and the compressor body 12 is provided with an air exhaust port. It should be noted that the working principle of the compressor is well known to those skilled in the art, and therefore, the detailed description thereof is omitted.
An outdoor heat exchanger 3 and an indoor heat exchanger 5, one of which operates as a condenser and the other operates as an evaporator.
The four-way valve 2 is used for controlling the flow direction of refrigerant in the refrigerant loop so as to switch the outdoor heat exchanger 3 and the indoor heat exchanger 5 between the condenser and the evaporator.
Specifically, the four-way valve 2 is provided with a first interface, a second interface, a third interface and a fourth interface, an exhaust port of the compressor 1 is connected with the first interface of the four-way valve 2, and an air suction port is connected with the third interface of the four-way valve 2; the outdoor heat exchanger 3 and the indoor heat exchanger 5 each have a first port and a second port. A first port of the outdoor heat exchanger 3 is connected with a second interface of the four-way valve 2; a first port of the indoor heat exchanger 5 is connected with a fourth interface of the four-way valve 2, and two ends of the throttling component 4 are respectively connected with a second port of the indoor heat exchanger 5 and a second port of the outdoor heat exchanger 3, so that a closed-loop refrigerant circulation loop is formed. Referring to fig. 4, 6 to 8, the direction of the arrow in the figure is the flow direction of the refrigerant.
The air conditioner 100 further includes a connection pipe connecting the indoor unit 30 and the outdoor unit 20 for guiding the flow of the refrigerant.
The air conditioner 100 further comprises an electromagnetic heating device 6, the electromagnetic heating device 6 is sleeved on the outer side of the throttling component 4, when the throttling component 4 is blocked by oil in a preset state, the electromagnetic heating device 6 heats the throttling component 4, so that the frozen lubricating oil blocked inside is heated, the lubricating oil is melted and flows after being heated, and an air conditioning system of the air conditioner enters a normal operation state. The preset states are a state in which defrosting starts after the low-temperature heating state is finished and a state in which low-temperature heating starts after the defrosting state is finished.
Through establishing electromagnetic heating device 6 at the outside cover of throttle part 4, improved throttle part 4 when the operating condition who predetermines the state that the low temperature is converted mutually between heating state and the state of defrosting promptly, take place the stifled problem of oil easily, compare in traditional heating methods, electromagnetic heating device 6's rate of heating is fast, efficient, can melt the lubricating oil in throttle part 4 oil blocking area 40 fast to avoid the compressor to be in idle running state, improved air conditioning system's security.
Referring to fig. 4, the electromagnetic heating device 6 includes a magnetic sleeve 61, an electromagnetic coil 62, and a control assembly 63.
Specifically, the magnetic sleeve 61 is sleeved outside the throttling component 4, the electromagnetic coil 62 is wound outside the magnetic sleeve 61, the input end of the control assembly 63 is electrically connected with the power circuit of the air conditioner, the output end of the control assembly 63 is electrically connected with the electromagnetic coil 62, and the output end of the control assembly 63 outputs an alternating voltage. That is, after the control module 63 is connected to the power circuit of the air conditioner 100, an alternating power source 632 is provided, and the output end of the control module 63 is electrically connected to the electromagnetic coil 62, that is, the electromagnetic coil 62 is connected to the alternating power source 632. This structure causes the electromagnetic coil 62 to generate an alternating magnetic field, the magnetic sleeve 61 generates eddy currents in the alternating magnetic field to generate heat, and the heat is further conducted to the throttling part 4 through the pipe wall of the magnetic sleeve 61, thereby heating the throttling part 4. The electromagnetic coil 62 does not generate heat during electromagnetic heating, can heat to a higher temperature, has high thermal efficiency, low maintenance cost and long service life, can realize accurate temperature control, and improves the operation reliability of the air conditioning system.
A heat conduction layer is arranged between the magnetic sleeve 61 and the throttling component 4 or the magnetic sleeve 61 and the throttling component 4 are in interference fit through a tube expansion process, so that good heat conduction performance is achieved. The heat conducting layer may be a heat conducting silicone layer formed by coating.
In this embodiment, the magnetic sleeve 61 is a stainless steel sleeve, which has good heat conductivity, and can improve the safety performance of the air conditioner when the pipeline of the throttling component 4 is not a magnetic material or a working medium flowing inside the throttling component 4 has a certain safety risk.
Referring to fig. 4, the electromagnetic heating device 6 further includes a temperature detection device 64, the temperature detection device 64 being mounted on the outer surface of the magnetic sleeve 61, the temperature detection device 64 being configured to detect the temperature of the magnetic sleeve 61.
Specifically, the temperature detection device 64 is preset with a temperature upper limit value T h And a lower temperature limit T l And the measured temperature T and the upper limit value T of the temperature h Lower temperature limit T l Comparing, and when the measured temperature T is the upper limit value T of the temperature h At the above value, the electric circuit between the electromagnetic coil 62 and the power supply circuit is opened, thereby turning off the electromagnetic heating device 6. When the measured temperature T is the lower limit value T l When the air conditioner is clogged with oil, the circuit between the electromagnetic coil 62 and the power supply circuit is closed, so that the electromagnetic heating device 6 is turned on again.
The temperature detecting device 64 may be a temperature controller, a temperature sensor or a temperature probe. When the temperature detecting device 64 is a thermostat, it is connected in series in the circuit loop of the electromagnetic coil 62 and the control component 63, and controls the closing or opening of the circuit between the electromagnetic coil 62 and the power circuit according to the temperature of the magnetic sleeve 61.
When the temperature detection device 64 is a temperature controller, the temperature controller can perform overtemperature protection on the throttling component 4, realize automatic identification of high-temperature abnormity and cut off a circuit between the electromagnetic coil 62 and the power circuit, stop heating of the throttling component 4, avoid the condition that the throttling component 4 is damaged due to overhigh temperature, and further improve the safety performance of the air conditioner.
When the temperature detecting device 64 is a temperature sensor or a temperature probe, it is electrically connected to the main processing module 9.
Referring to fig. 6, the control module 63 includes a rectifying and inverting unit (not shown) electrically connected between the power circuit and the electromagnetic coil 62, and a power switch 631 electrically connected between the electromagnetic coil 62 and the rectifying and inverting unit, wherein the power switch 631 is used for controlling the on/off of the circuit between the electromagnetic coil 62 and the power circuit.
The rectification inversion unit can rectify 50-60 Hz low-frequency alternating current into direct current, then invert the direct current to form 20-40 kHz high-frequency current to act on the electromagnetic coil 62, the high-frequency current generates an alternating magnetic field with high-speed change through the electromagnetic coil 62, so that the magnetic sleeve 61 arranged in the middle of the electromagnetic coil 62 cuts alternating magnetic lines of force to generate alternating current, namely eddy current, the magnetic sleeve 61 generates heat quickly, the electromagnetic heating mode has the advantages of high heating speed and high thermal efficiency, and the problem of oil blockage is effectively solved.
Referring to fig. 5 and 10, the air conditioner 100 further includes a pressure sensor 8, and the pressure sensor 8 includes a first pressure sensor 81 and a second pressure sensor 82.
Specifically, the first pressure sensor 81 is disposed at a first end of the throttle member 4, and the first pressure sensor 81 detects the pressure of the refrigerant flowing through the first end; the second pressure sensor 82 is disposed at a second end of the throttling member 4, and the second pressure sensor 82 detects a pressure of the refrigerant flowing through the second end.
The air conditioner 100 further includes a main processing module 9 electrically connected to the control module 63, the main processing module 9 is electrically connected to the first pressure sensor 81 and the second pressure sensor 82 for acquiring pressure data detected by the two pressure sensors, and sending a control signal according to the pressure data detected by the pressure sensor downstream of the refrigerant flowing direction, and the control module 63 is configured to receive the control signal and control the on/off of the circuit between the electromagnetic coil 62 and the power circuit according to the control signal.
In some embodiments, the main processing module is a single-chip microcomputer.
More specifically, the first pressure sensor 81 and the second pressure sensor 82 are used for detecting the pressure values of the first end and the second end respectively when the air conditioner is in a preset state. Downstream of the refrigerant flow direction, namely after the refrigerant flows through the throttling component from the first end to the second end, the pressure data detected by the second pressure sensor 82 at the second end; after the refrigerant flows through the throttling member from the second end to the first end, the pressure data detected by the first pressure sensor 81 at the first end is obtained.
Whether oil blockage occurs is judged through the downstream pressure of the refrigerant flowing direction of the throttling part 4, and then whether the electromagnetic heating device 6 is started is determined to solve the oil blockage problem, so that the method is simple and convenient. The main processing module 9 includes a determining unit 91, a data collecting unit 92 and a data processing unit 93, and the data processing unit 93 is electrically connected to the determining unit 91 and the data collecting unit 92.
The determining unit 91 is used for determining whether the air conditioner is operating in a preset state, the data collecting unit 92 is connected to the first pressure sensor 81 and the second pressure sensor 82 for collecting the pressure data detected by the first pressure sensor and the second pressure sensor, and the data processing unit is used for acquiring the determining result output by the determining unit 91 and the downstream pressure data.
The data processing unit 93 is preset with a pressure threshold p 0 And a pressure range which is a pressure section of a normal pressure of the downstream of the throttling part 4, wherein the data processing unit 93 acquires the downstream pressure data p and a pressure threshold value p 0 And comparing the pressure range, and sending a control signal according to a comparison result.
Specifically, when the determining unit 91 determines that the air conditioner is in the preset state, and the downstream pressure data p acquired by the data processing unit 93 is the pressure threshold p 0 When the value is as follows, the data processing unit 93 issues a control signal for turning on the electromagnetic heating device 6, and the control unit 63 receives the control signal to close the circuit between the electromagnetic coil 62 and the power supply circuit, thereby turning on the electromagnetic heating device 6 and heating the throttle unit 4.
When the determining unit 91 determines that the air conditioner is in the preset state, and the downstream pressure data p obtained by the data processing unit 93 is the pressure threshold p 0 When the pressure is within the above range, the data processing unit 93 issues a control signal for turning off the electromagnetic heating device 6, and the control unit 63 receives the control signal to open the circuit between the electromagnetic coil 62 and the power supply circuit, thereby turning off the circuitThe electromagnetic heating device 6 avoids heating the throttling part 4.
In some embodiments of the present application, the main processing module 9 is electrically connected to the compressor 1, and the main processing module 9 is configured to control start and stop of the compressor 1.
The main processing module 9 is also configured to obtain the operating power P of the compressor 1 in real time, the main processing module 9 being preset with a power threshold P 0 A power range and the operating power and a power threshold P 0 The power ranges are compared, and a control signal is sent to the control component 63 according to the comparison result, and the control component 63 is configured to receive and control the on-off of the circuit between the electromagnetic coil 62 and the power circuit according to the control signal.
Wherein, the power range is the power interval when the compressor 1 normally operates, and under the preset state of the air conditioner, whether oil blockage occurs is judged through the operating power P of the compressor 1, and then whether the electromagnetic heating device 6 is started to solve the oil blockage problem is determined, so as to avoid damaging the compressor 1.
Specifically, the data processing unit 93 also presets a power threshold P 0 And a power range, when the determining unit 91 determines that the air conditioner is in the preset state, the data processing unit 93 obtains the operation power P as the power threshold P 0 When the value is as follows, the data processing unit 93 issues a control signal for turning on the electromagnetic heating device 6, and the control unit 63 receives the control signal to close the circuit between the electromagnetic coil 62 and the power supply circuit, thereby turning on the electromagnetic heating device 6 and heating the throttle unit 4.
When the determining unit 91 determines that the air conditioner is in the preset state, the data processing unit 93 obtains the operating power P as the power threshold P 0 When the value is within the power range, the data processing unit 93 issues a control signal for turning off the electromagnetic heating device 6, and the control unit 63 receives the control signal to open the circuit between the electromagnetic coil 62 and the power supply circuit, thereby turning off the electromagnetic heating device 6 and avoiding heating the throttling part 4.
The throttling component 4 is a throttling short pipe or a capillary pipe or an electronic expansion valve, that is, the electromagnetic heating device 6 can be applied to various throttling components including throttling short pipes, capillary pipes and electronic expansion pipes. It should be noted that, in other embodiments, the electromagnetic heating device 6 may also be applied to other devices where oil blockage may occur. When the throttling component is an electronic expansion valve, the main processing module 9 can control the opening and closing degree of the electronic expansion valve. The orifice 4 shown in fig. 4 and 6 is a choke stub.
Further, a temperature sensor (not shown) is arranged at the exhaust port of the compressor 1, the temperature sensor is electrically connected with the main processing module 9, and the temperature sensor detects the temperature of the exhaust port of the compressor 1; the oil blockage problem can be determined by the temperature at the air outlet, and the application range is wide.
The utility model provides an air conditioner solves the control logic of the stifled problem of oil as follows:
pre-checking: after starting the machine, the electromagnetic heating system is not started for the moment, and whether the parameters such as the surface temperature T of the stainless steel sleeve, the downstream pressure data P of the throttling component 4, the running power P of the compressor and the like are normal or not is detected, if not, an alarm signal is sent to the electric control box component.
Heating and starting: when the determining unit 91 determines that the air conditioner is in the preset state, the main processing module 9 detects that the running power real-time value P of the compressor is lower than the power threshold value P 0 And/or the downstream pressure data p of the throttling member 4 is lower than a pressure threshold value p 0 When the electromagnetic heating device 6 is turned on, the main processing module 9 sends a control signal to the control assembly 63.
And (3) heating and closing: the main processing module 9 detects that the operating power P of the compressor is higher than the power threshold P 0 And regressing that the power range of the normal power of the compressor is reached and/or the downstream pressure data p of the throttling element 4 is higher than the pressure threshold value p 0 And when the pressure returns to the pressure range of the normal pressure at the downstream of the throttle valve, the main processing module 9 sends a control signal to the control assembly 63 to close the electromagnetic heating device 6.
Temperature protection: detecting that the surface temperature of the stainless steel sleeve is higher than the upper limit value T of the temperature h When the electromagnetic heating device 6 is turned off to avoid the throttle member 4 from being over-heated, the surface temperature T is reduced to the lower temperature limit value T l And when the heating start condition is still met, the electromagnetic heater can be restartedAnd a thermal device 6.
In some embodiments of the present application, the alternating current frequency real-time value f, the alternating voltage real-time value U, and the alternating current real-time value I of the electromagnetic coil 62 may also be detected.
The electromagnetic heating device 6 can select a single heating state or a precise heating state. The single heating state means that the electromagnetic heating device 6 is at a given rated frequency f of the alternating current 0 Rated alternating voltage U 0 Rated alternating current I 0 Next, the operation is performed, and only the electromagnetic heating device 6 is controlled to be turned on and off.
The accurate heating state is that besides the control of the opening and closing of the electromagnetic heating device, one or more parameters of an alternating current frequency real-time value f, an alternating voltage real-time value U and an alternating current real-time value I can be changed according to the variation and the variation rate of one or more parameters including the surface temperature T of the stainless steel sleeve, the downstream pressure data P of the throttling component 4, the running power P of the compressor, the temperature of an outer disc monitored by the normal running of the air conditioner, the frequency of the compressor, the exhaust temperature of the compressor, the outdoor environment temperature and the like, so as to realize the requirements of accurate heating, temperature control and energy conservation.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An air conditioner, comprising:
a four-way valve;
the compressor is provided with a suction port and an exhaust port and used for compressing a refrigerant, the exhaust port is connected with a first interface of the four-way valve, and the suction port is connected with a third interface of the four-way valve;
the first port of the outdoor heat exchanger is connected with the second interface of the four-way valve;
a first port of the indoor heat exchanger is connected with a fourth interface of the four-way valve;
two ends of the throttling component are respectively connected with the second port of the indoor heat exchanger and the second port of the outdoor heat exchanger;
the electromagnetic heating device is sleeved on the outer side of the throttling component;
when the throttling component is blocked by oil in a preset state, the electromagnetic heating device heats the throttling component so as to heat the lubricating oil blocked in the throttling component.
2. The air conditioner according to claim 1, wherein the electromagnetic heating device comprises:
the magnetic sleeve is sleeved outside the throttling component;
the electromagnetic coil is wound on the outer side of the magnetic sleeve;
the input end of the control assembly is electrically connected with a power circuit of the air conditioner, the output end of the control assembly is electrically connected with the electromagnetic coil, and the output end of the control assembly outputs alternating voltage.
3. The air conditioner according to claim 2, wherein the electromagnetic heating device further comprises a temperature detection device mounted on an outer surface of the magnetic sleeve, the temperature detection device detecting a temperature of the outer surface of the magnetic sleeve.
4. The air conditioner according to claim 2 or 3, wherein the control component comprises a rectification inverter unit and a power switch, the rectification inverter unit is electrically connected between the power circuit and the electromagnetic coil, the power switch is electrically connected between the electromagnetic coil and the rectification inverter unit, and the power switch is used for controlling the on/off of a circuit between the electromagnetic coil and the power circuit.
5. The air conditioner according to claim 2, further comprising:
the main processing module is electrically connected with the control assembly;
the first pressure sensor is arranged at a first end of the throttling component and used for detecting the pressure of the refrigerant flowing through the first end;
the second pressure sensor is arranged at a second end of the throttling component and used for detecting the pressure of the refrigerant flowing through the second end;
the first pressure sensor and the second pressure sensor are both electrically connected with the main processing module.
6. The air conditioner as claimed in claim 5, wherein the main processing module comprises a judging unit, a data collecting unit and a data processing unit, and both the judging unit and the data collecting unit are electrically connected with the data processing unit; and/or the presence of a gas in the gas,
the main processing module is electrically connected to the compressor.
7. The air conditioner according to claim 5, wherein a temperature sensor is disposed at an exhaust port of the compressor, the temperature sensor is electrically connected to the main processing module, and the temperature sensor detects a temperature of the exhaust port of the compressor.
8. The air conditioner according to claim 2, wherein a heat conducting layer is arranged between the magnetic sleeve and the throttling component or the magnetic sleeve and the throttling component are in interference fit through a pipe expansion process; and/or the magnetic sleeve is a stainless steel sleeve.
9. The air conditioner of claim 2, further comprising:
a chassis;
the outdoor shell is arranged on the chassis and defines an installation cavity with the chassis, and the four-way valve, the compressor and the outdoor heat exchanger are all arranged in the installation cavity;
the electric control box assembly is arranged in the installation cavity and comprises an electric control box body, and the control assembly is arranged in the electric control box body.
10. The air conditioner according to claim 1, wherein the refrigerant is R290 refrigerant, the throttle member is a throttle short pipe or a capillary tube or an electronic expansion valve, and the preset state is an operating state when the air conditioner is switched between a low-temperature heating state and a defrosting state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002961.9U CN217900225U (en) | 2022-07-29 | 2022-07-29 | Air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222002961.9U CN217900225U (en) | 2022-07-29 | 2022-07-29 | Air conditioner |
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| CN217900225U true CN217900225U (en) | 2022-11-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164458A (en) * | 2022-07-26 | 2022-10-11 | 海信空调有限公司 | Air conditioner and oil blockage prevention control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115164458A (en) * | 2022-07-26 | 2022-10-11 | 海信空调有限公司 | Air conditioner and oil blockage prevention control method thereof |
| CN115164458B (en) * | 2022-07-26 | 2023-10-13 | 海信空调有限公司 | Air conditioner and oil blocking prevention control method thereof |
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