CN114688607B - Air conditioner control method and device and air conditioner - Google Patents
Air conditioner control method and device and air conditioner Download PDFInfo
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- CN114688607B CN114688607B CN202011633934.0A CN202011633934A CN114688607B CN 114688607 B CN114688607 B CN 114688607B CN 202011633934 A CN202011633934 A CN 202011633934A CN 114688607 B CN114688607 B CN 114688607B
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- air conditioner
- heat
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- defrosting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/18—Details or features not otherwise provided for combined with domestic apparatus
Abstract
The invention provides an air conditioner control method and device and an air conditioner; the air conditioner control method comprises the following steps: the air conditioner is in a heating mode, controls the internal machine to heat and controls the heat storage part to store heat; the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat. The method can avoid the reduction of the room temperature in the defrosting mode and can provide a comfortable heating environment.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner control method, an air conditioner control device and an air conditioner.
Background
In the heating mode of the existing air conditioner, the external heat exchanger can frost, so that the air conditioner needs to defrost regularly.
The existing defrosting process has the following two problems: 1) In the defrosting mode, the heat exchanger of the internal machine absorbs ambient heat to be used as an evaporator, so that the indoor temperature is reduced; and the inner machine heat exchanger is restrained from absorbing ambient heat by stopping the inner machine fan. Another problem arises from the fact that the internal fan stops acting: 2) Because the heat absorption of the heat exchanger of the internal machine is inhibited, but the refrigerant is not completely evaporated, the refrigerant returns to the compressor in a two-phase state, and the reliability of the compressor is affected; in order to ensure the normal operation of the compressor, the problem of the temperature drop caused by the above problem is appropriately ignored.
It can be seen that the existing air conditioner may cause a decrease in room temperature during defrosting.
Disclosure of Invention
The invention solves the problem that the air conditioner can cause the temperature to drop in the defrosting process.
In order to solve the problems, the invention provides a control method of an air conditioner, the air conditioner comprises an outer machine, a heat storage part and at least one inner machine, wherein the outer machine is communicated with the heat storage part and each inner machine through a pipeline; the air conditioner control method comprises the following steps: the air conditioner is in a heating mode, controls the internal machine to heat and controls the heat storage part to store heat; the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat.
Compared with the prior art, the embodiment can achieve the following technical effects: the heat storage part is used for storing heat, so that the continuous heating of the unit is ensured; and when defrosting is performed, the heat storage part releases heat for defrosting; the defrosting time can be shortened, and the reduction of the room temperature can be avoided; thereby providing a comfortable heating environment and improving the user experience of the product.
In one embodiment of the invention, the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat; comprising the following steps: controlling the air conditioner to enter a preliminary defrosting state according to the heat of the heat storage part; when the air conditioner meets the first switching condition, the four-way valve is controlled to be in a closed state, and the air conditioner is controlled to be in a defrosting state.
In this embodiment, whether to enter the preliminary defrosting state and the defrosting state is determined according to whether or not the heat of the heat storage portion reaches the heat demand of defrosting.
In one embodiment of the present invention, the heat storage part includes a heat storage tank, and the external machine communicates with the heat storage tank; and controlling the air conditioner to enter a preliminary defrosting state according to the heat of the heat storage part, wherein the method comprises the following steps: judging whether the heat capacity of the heat storage tank is larger than or equal to a preset heat capacity value; and when the heat capacity is larger than or equal to the preset heat capacity value, controlling the external machine to enter the preliminary defrosting state.
In one embodiment of the invention, the heat capacity h=d× (s+f) +ti×c; wherein, D is the drainage value of the heat storage tank; s is the specific heat value of water; the F is the melting heat value of water; the Ti is preset defrosting time; and C is the heating capacity of the air conditioner.
In this embodiment, a calculation method of the heat capacity is provided, which can calculate the heat capacity, whereby control to enter the preliminary defrosting state can be achieved.
In one embodiment of the present invention, the first switching condition includes: the time for the air conditioner to enter the preliminary defrosting state is at least 10 minutes.
In this embodiment, the air conditioner is controlled to be in the preliminary defrosting state, and when the air conditioner reaches the optimal defrosting state, the air conditioner is controlled to be in the defrosting state, so that a better defrosting effect is achieved.
In one embodiment of the present invention, the controlling the air conditioner to enter a defrost state includes: and controlling the frequency of the compressor of the external machine to be a defrosting frequency value, wherein the defrosting frequency value is 60-100Hz.
In one embodiment of the present invention, the controlling the air conditioner to enter a defrost state includes: and controlling the opening of the second expansion valve of the internal machine to be a defrosting opening value, wherein the defrosting opening value is 100-140Pls.
In this embodiment, in the defrosting state, if the frequency of the compressor is too high, the heat exchange amount of the evaporator is insufficient, so that the problem of liquid return is caused, and the reliability of the product is affected; and the compressor frequency is too low, which may cause insufficient heat for defrosting, cause a longer defrosting time, or may cause defrosting residues. Therefore, the proper defrosting frequency value is determined, the problem can be well solved, the heat exchange quantity of the evaporator is guaranteed, the liquid return problem is avoided, sufficient heat is provided for defrosting, and the defrosting time is shortened.
On the other hand, in the defrost state, an excessive opening degree of the second expansion valve of the internal machine may cause excessive heat to be distributed to the internal machine, resulting in poor defrosting capacity; and if the opening is too small, the heat distributed to the inner machine is too small to at least room temperature, so that indoor heating is affected, and discomfort is brought to a user. Therefore, by setting a proper defrosting opening value, the problems can be well solved, the defrosting capacity is ensured, sufficient heating is provided for the room, and the user experience is improved.
In one embodiment of the present invention, the air conditioner control method further includes: when the air conditioner finishes defrosting, controlling the air conditioner to enter a heating preparation state; and when the air conditioner meets the second switching condition, controlling the four-way valve to be in an open state and controlling the air conditioner to be restored to the heating mode.
In one embodiment of the present invention, the second switching condition includes at least one of the following conditions: the time for the air conditioner to enter the preliminary heating state is at least 10min; the pressure difference between the exhaust pressure and the suction pressure of the external machine is at least 2.5MPa; the temperature of the heat exchanger of the external machine is at least 10 ℃.
In this embodiment, when defrosting is completed, the air conditioner is not immediately restored to the heating mode, but is first brought into the preliminary heating state, and is brought to a condition where the air conditioner can be switched to the heating mode, the air conditioner is controlled to be brought into the heating mode, and the reliability of operation of the air conditioner is improved.
In summary, when the air conditioner switches from the heating mode to the defrosting mode, the air conditioner enters the preliminary defrosting state for transition; and when the defrosting mode is restored to the heating mode, the preliminary heating state is entered for transition. In the defrosting mode, defrosting efficiency of the air conditioner is ensured, and operation reliability of the air conditioner is improved.
In one embodiment of the invention, the heat storage part comprises a ground heating hydraulic system, and the external machine can exchange heat with the ground heating hydraulic system; the air conditioner is a heating mode, and further comprises: the external machine and the ground heating hydraulic system are controlled to be in a first heat exchange state, and the first heat exchange state is that the external machine supplies heat to the ground heating hydraulic system.
In the embodiment, in the heating mode, the geothermal hydraulic system can also provide heat for the indoor space while storing heat, so that the indoor temperature and the comfort level can be improved.
In one embodiment of the invention, the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat; comprising the following steps: when the floor heating temperature value is greater than or equal to a preset temperature value, controlling the external machine to enter a preliminary defrosting state; when the air conditioner meets the first switching condition, the four-way valve is controlled to be in a closed state, and the air conditioner is controlled to be in a defrosting state.
In one embodiment of the invention, the preset temperature value is at least 30 ℃.
In this embodiment, in order to ensure that the geothermal hydraulic system supplies heat to the room, the air conditioner is controlled to enter the preliminary defrosting state and the defrosting state when the geothermal temperature value is equal to or greater than the preset temperature value. Thereby avoid indoor temperature to drop, lead to the comfort level to reduce, influence user experience.
In one embodiment of the present invention, the controlling the air conditioner to enter a defrost state includes: the external machine and the ground heating hydraulic system are controlled to be in a second heat exchange state, and the second heat exchange state is that the ground heating hydraulic system supplies heat to the external machine.
In one embodiment of the present invention, the controlling the air conditioner to enter a defrosting state further includes: when the floor heating temperature value is smaller than a preset temperature value, controlling to increase the opening of a second expansion valve of the inner machine and controlling an inner machine fan of the inner machine to stop rotating; and controlling the external machine and the ground heating hydraulic system to be in a third heat exchange state, wherein the third heat exchange state is that the ground heating hydraulic system and the external machine stop exchanging heat.
In one embodiment of the present invention, the controlling to increase the opening degree of the second expansion valve of the internal machine includes: controlling the opening degree of the second expansion valve to be increased from a defrosting opening degree value to a fixed opening degree value; the control of the inner machine fan of the inner machine to stop rotating comprises the following steps: controlling the inner machine fan to stop rotating from a weak wind mode; the control of the external machine and the ground heating hydraulic system to be in a third heat exchange state comprises the following steps: and controlling the heat exchange water pump to be in a closed state.
In another aspect, the present invention provides an air conditioner control device, where the air conditioner includes an external unit, a heat storage unit, and at least one internal unit, and the external unit is connected to the heat storage unit and each internal unit through a pipeline; the air conditioner control device includes: the heating module is used for controlling the internal mechanism to heat and controlling the heat storage part to store heat; and the defrosting module is used for controlling the internal mechanism to heat and controlling the heat storage part to release heat.
In still another aspect, the present invention provides an air conditioner, comprising: a computer-readable storage medium storing a computer program and a packaged IC, the computer program, when read and executed by the packaged IC, implementing the air conditioner control method according to any one of the embodiments above.
Drawings
Fig. 1 is a flowchart of a control method of an air conditioner according to a first embodiment of the present invention.
Fig. 2 is a detailed flowchart of the air conditioner control method shown in fig. 1.
Fig. 3 is a schematic block diagram of an air conditioner control device according to a second embodiment of the present invention.
Fig. 4 is a schematic block diagram of a readable storage medium according to a fourth embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
[ first embodiment ]
Referring to fig. 1, a control method of an air conditioner according to a first embodiment of the present invention is provided. The air conditioner executing the air conditioner control method comprises an outer machine, a heat storage part and at least one inner machine, wherein the outer machine is communicated with the heat storage part and each inner machine through pipelines. The air conditioner control method includes, for example:
s110: the air conditioner is in a heating mode, controls the internal heating mechanism to heat and controls the heat storage part to store heat.
When a plurality of internal machines are provided, the internal machines are respectively heated in the heating mode. The heat storage part can be provided with a hydraulic module, and the purpose of heat storage is achieved by absorbing heat through the hydraulic module.
S130: the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat.
When a plurality of internal machines are provided, at least one of the internal machines can be controlled to serve as an evaporator for refrigeration, the other at least one internal machine can be controlled to serve as a condenser for heating, and meanwhile, the heat storage part is controlled to release heat so as to defrost the external machines.
Referring to fig. 2, in a specific embodiment, the S130 includes, for example:
s131: and controlling the air conditioner to enter a preliminary defrosting state according to the heat of the heat storage part.
S132: when the air conditioner meets the first switching condition, the four-way valve is controlled to be in a closed state, and the air conditioner is controlled to be in a defrosting state.
With continued reference to fig. 2, in another specific embodiment, the air conditioner control method further includes, for example:
s140: and when the air conditioner finishes defrosting, controlling the air conditioner to enter a heating preparation state.
S150: and when the air conditioner meets the second switching condition, controlling the four-way valve to be in an open state and controlling the air conditioner to be restored to the heating mode.
The air conditioner control method will be described in detail below taking the example that the heat storage part comprises a heat storage tank; the heat storage tank is provided with the hydraulic module, and the external machine is communicated with the heat storage tank.
The S131 may be to determine whether the heat capacity of the heat storage tank is less than a preset heat capacity value. The preset heat value can be calculated in advance according to a test, and can be the heat required when defrosting is completed. The preset heat value can be determined according to different models and different volumes of heat storage tanks.
Wherein the heat capacity h=d× (s+f) +ti×c; the D is the drainage value of the heat storage tank; s is the specific heat value of water; the F is the melting heat value of water; the Ti is preset defrosting time; and C is the heating capacity of the air conditioner. The c= (Te 1-Te 2) x I; wherein Te1 is an indoor temperature value of the internal machine; te2 is an outdoor temperature value of the external machine; and I is a thermal load coefficient.
Correspondingly, the preset heat value can also be calculated by the formula. For example, by maximizing the amount of frost formed by the air conditioner, and then determining the minimum heat capacity required by the thermal storage tank when defrosting of the air conditioner can be completed.
In the above formula: the D may be the amount of water discharged during defrosting calculated in the preliminary experiment, and may be obtained by performing experimental confirmation on the air conditioner. The specific heat value S is the heat required for 1g of water to rise in temperature by 1 ℃, and the heat required for 1g of water to rise in temperature by 5 ℃ is about 5X 4.217J/g; the temperature of 5 ℃ is the temperature at which melted water can not be frozen any more and can be directly discharged in a liquid state, and experiments prove that the defrosting temperature can be changed into defrosting and liquid water can be discharged when the defrosting temperature reaches more than 5 ℃.
The heat of fusion F was approximately 333.6J/g of heat required for 1g of ice to 1g of water. The defrosting time Ti is defrosting time obtained under the defrosting test condition, namely at 0-2 ℃, and the air conditioner is frosted most under the defrosting test condition. The heating capacity C of the air conditioner is the maximum capacity of all internal machines or the heating capacity before defrosting, namely the internal capacity when the air conditioner runs in the heating mode before entering the defrosting mode.
In the step S131, when the heat capacity is equal to or greater than the preset heat capacity value, the heat capacity of the heat storage tank may complete defrosting the external unit, thereby controlling the external unit to enter the preliminary defrosting state.
The external machine entering the preliminary defrosting state includes: and controlling to reduce the frequency of the compressor of the external machine and controlling to increase the opening degree of the first expansion valve of the external machine.
Specifically, the frequency of the compressor is controlled to be reduced from the normal working state to the minimum frequency value. The minimum frequency value may be a theoretically achievable frequency minimum of the compressor.
Controlling to increase the opening of the first expansion valve may be controlling to increase the opening of the first expansion valve to a maximum opening value; it may also be that after the preliminary defrosting state is entered for a period of time, the opening degree of the first expansion valve is increased to the maximum opening degree value. I.e. in the pre-defrost state, the first expansion valve is fully open.
The four-way valve is in the preliminary defrosting state before being switched to the closed state, and the S132 is executed when the external machine is in the preliminary defrosting state. Wherein the first switching condition includes: and the duration of the air conditioner or the external machine entering the preliminary defrosting state is at least 10min.
When the air conditioner reaches at least one of the above conditions, performing S132 includes: and controlling the four-way valve to be in a closed state and controlling the air conditioner to enter a defrosting state.
Wherein controlling the air conditioner to enter the defrost state comprises: and controlling the outer machine of the air conditioner to perform corresponding actions, and controlling the inner machine of the air conditioner to perform corresponding actions.
The controlling the external machine of the air conditioner to perform corresponding actions comprises: controlling the frequency of the compressor to be increased may be increasing the frequency of the compressor by a defrost frequency value, for example between 60-100 Hz; and controlling the outer machine fan of the outer machine to stop rotating.
When the air conditioner is switched from the preliminary defrosting state to the defrosting state, for example, controlling the frequency of the compressor to be increased from the minimum frequency value to the defrosting frequency value; maintaining the opening value of the first expansion valve to be the maximum opening value; and controlling the external fan to change from a normal rotation state to stop rotating.
When the air conditioner is provided with a plurality of internal machines, the controlling the internal machines of the air conditioner to perform corresponding actions comprises: controlling the first internal machine to act so as to continue heating; and controls the other second internal machine to perform general heating control. Specifically, controlling the first internal machine to perform actions to continue heating includes: controlling the opening of a second expansion valve of the first internal machine to be a defrosting opening value, wherein the defrosting opening value is 100-140Pls; and controlling the inner machine fan of the first inner machine to be in a weak wind state, or reducing the rotating speed value of the inner machine fan.
When the air conditioner is switched from the preliminary defrosting state to the defrosting state, for example, controlling the opening degree of a second expansion valve of the first internal machine to be reduced to the defrosting opening degree value; and controlling the fan of the first inner machine to change from a normal working state to the weak wind state.
Therefore, when the air conditioner is in the defrosting state, the first internal machine can be kept to continuously heat, so that the indoor temperature is not reduced.
In S140, when the air conditioner finishes defrosting, the air conditioner is controlled to enter a heating preparation state, that is, the external unit is controlled to enter the heating preparation state.
The preliminary heating state includes: controlling the compressor reduction frequency of the external machine may be reducing the frequency of the compressor to the minimum frequency value, for example reducing the frequency of the compressor from the defrost frequency value to the minimum frequency value.
In the preliminary heating state, the opening degree of the first expansion valve is kept to be the maximum opening degree value, the outer machine fan is kept to be in a stop state, the opening degree of the second expansion valve is kept to be a defrosting opening degree value, and the inner machine fan is kept to be in a weak wind state; of course, it is also included to keep the second internal machine continuously for general heating control.
In the S150, the second switching condition includes at least one of the following conditions: the condition 1) the duration of the air conditioner or the external machine entering the preliminary heating state is at least 10min; condition 2) the high-low pressure difference between the discharge pressure and the suction pressure of the external machine is at least 2.5MPa; condition 3) the heat exchanger temperature of the external machine is at least 10 ℃.
And when the air conditioner meets at least one condition, controlling the four-way valve to be switched into an open state, and controlling the air conditioner to be restored to the heating mode. For example, the heating mode before the air conditioner is restored to the preliminary defrosting state.
And when the air conditioner is controlled to return to the heating mode, controlling the frequency of the compressor of the external machine to be increased from the minimum frequency value to a target frequency value, wherein the target frequency value can be smaller than the frequency value of the compressor before the preliminary defrosting state.
In another specific embodiment, the heat storage part comprises a ground heating hydraulic system, and the ground heating hydraulic system can exchange heat with the external machine. Unlike the above-described specific embodiments, the air conditioner control method includes, for example:
in S110, when the air conditioner is in a heating mode, the method further includes controlling the external machine and the ground heating hydraulic system to be in a first heat exchange state, where the first heat exchange state is that the external machine supplies heat to the ground heating hydraulic system.
The external machine supplies heat to the ground heating hydraulic system so as to achieve the aim of supplying heat indoors.
And the S131 may be to control the air conditioner to enter the preliminary defrosting state according to a floor heating temperature value. The floor heating temperature value is at least 30 ℃, and of course, the floor heating temperature value can be between 30 and 35 ℃.
For example, when the air conditioner needs defrosting, a floor heating temperature value of the floor heating hydraulic system is obtained, and when the floor heating temperature value is greater than 35 ℃, the air conditioner is controlled to enter the preliminary defrosting state.
Wherein when the step S132 is executed, that is, when the air conditioner enters the defrosting state, the method further includes: and controlling the external machine and the ground heating hydraulic system to be in a second heat exchange state, wherein the second heat exchange state is that the ground heating hydraulic system supplies heat to the external machine, so that defrosting of the external machine is performed.
And when the air conditioner is in the defrosting state, if the floor heating temperature value is smaller than the preset temperature value. In this case: and controlling the outer machine to be kept in the defrosting state, controlling the inner machine to perform corresponding actions, and controlling the outer machine and the ground heating hydraulic system to be in a third heat exchange state, wherein the third heat exchange state is that the ground heating hydraulic system and the heat storage tank stop exchanging heat.
Wherein, the controlling the internal machine to perform corresponding actions includes: controlling the opening value of the second expansion valve of the first internal machine to increase, for example, controlling the opening value of the second expansion valve of the first internal machine to increase from the defrosting opening value to a fixed opening value, for example, 380-500Pls; the method further comprises the step of controlling the inner machine fan of the first inner machine to reduce the rotating speed, for example, controlling the inner machine fan of the first inner machine to change from the weak wind state to stop rotating.
On the other hand, the controlling the internal machine to perform the corresponding action further includes: controlling the second expansion valve of the second internal machine to increase, for example, to the fixed opening value; and controlling the inner machine fan of the second inner machine to be kept in a stop state.
Furthermore, the controlling the heat storage tank and the ground heating hydraulic system to be in the third heat exchange state includes: and controlling a heat exchange water pump to be in a closed state, wherein the heat exchange water pump is used for controlling water in the ground heating hydraulic system and copper pipes of the external machine to flow in an interactive mode so as to exchange heat, and closing the heat exchange water pump to stop flowing of water in the ground heating hydraulic system, so that heat exchange between the external machine and the ground heating hydraulic system is stopped.
And controlling the first internal machine, the second internal machine and the third heat exchange state to be continued until the air conditioner meets the second switching condition, and then controlling the air conditioner to restore to the heating mode.
[ second embodiment ]
Referring to fig. 3, a schematic block diagram of an air conditioner control device according to a second embodiment of the present invention is shown. The air conditioner having the air conditioner control device 300 further includes an external machine, a heat storage portion, and at least one internal machine, the external machine communicates the heat storage portion and each of the internal machines through a pipe, and the air conditioner control device 300 includes, for example: a heating module 310, configured to control the internal heating and control the heat storage unit to store heat; and a defrosting module 330 for controlling the internal heat generation and the heat storage part to release heat.
In a specific embodiment, the heating module 310 and the defrosting module 330 of the air conditioner control device 300 cooperate to implement the air conditioner control method described in the first embodiment, which is not described herein.
[ third embodiment ]
A third embodiment of the present invention provides an air conditioner including, for example, an external machine, a heat storage portion, and at least one internal machine. In a specific embodiment, the heat storage part comprises a heat storage tank, and the external machine is communicated with the heat storage tank and each internal machine through a pipeline. In another specific embodiment, the thermal storage portion includes, for example, a ground heating hydraulic system that can exchange heat with the external machine.
The air conditioner includes, for example, a packaged IC and a computer readable storage medium; the computer readable storage medium stores a computer program which, when read and run by the packaged IC, implements the air conditioner control method as described in the first embodiment.
In a specific embodiment, the packaged IC is, for example, a processor chip electrically connected to the computer readable storage medium for reading and executing the computer program. The packaged IC may also be a packaged circuit board that encapsulates a processor chip that can read and execute the computer program; of course, the circuit board may also encapsulate the computer-readable storage medium.
The processor chip may be further provided with the air conditioner control device 500 according to the second embodiment, and the processor chip may implement the air conditioner control method according to the first embodiment through the air conditioner control device 500, which is not described herein again.
[ fourth embodiment ]
Referring to fig. 4, a schematic structural diagram of a readable storage medium according to a fourth embodiment of the present invention is provided. The readable storage medium 400 is, for example, a nonvolatile memory, which is, for example: magnetic media (e.g., hard disk, floppy disk, and magnetic strips), optical media (e.g., CDROM disks and DVDs), magneto-optical media (e.g., optical disks), and hardware devices that are specially constructed for storing and performing computer-executable instructions (e.g., read-only memory (ROM), random Access Memory (RAM), flash memory, etc.). Computer-executable instructions 410 are stored on the readable storage medium 400. The readable storage medium 400 may be provided with computer executable instructions 410 executed by one or more processors or processing devices to cause an air conditioner in which the readable storage medium 400 is located to implement the air conditioner control method as described in the first embodiment.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.
Claims (13)
1. The control method of the air conditioner is characterized in that the air conditioner comprises an outer machine, a heat storage part and at least one inner machine, wherein the outer machine is communicated with the heat storage part and each inner machine through a pipeline; the air conditioner control method comprises the following steps:
the air conditioner is in a heating mode, controls the internal machine to heat and controls the heat storage part to store heat;
the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat;
the air conditioner is in a defrosting mode, controls the internal mechanism to heat and controls the heat storage part to release heat; comprising the following steps:
controlling the air conditioner to enter a preliminary defrosting state according to the heat of the heat storage part;
when the air conditioner meets a first switching condition, controlling the four-way valve to be in a closed state and controlling the air conditioner to enter a defrosting state; the first switching condition includes: the time for the air conditioner to enter the preliminary defrosting state is at least 10min;
the heat storage part comprises a heat storage tank, and the external machine is communicated with the heat storage tank; and controlling the air conditioner to enter a preliminary defrosting state according to the heat of the heat storage part, wherein the method comprises the following steps:
judging whether the heat capacity of the heat storage tank is larger than or equal to a preset heat capacity value;
when the heat capacity is larger than or equal to the preset heat capacity value, controlling the external machine to enter the preliminary defrosting state; the external machine entering the preliminary defrosting state includes: and controlling to reduce the frequency of the compressor of the external machine and controlling to increase the opening degree of the first expansion valve of the external machine.
2. The air conditioner control method according to claim 1, wherein the heat capacity h=d× (s+f) +ti×c;
wherein, D is the drainage value of the heat storage tank; s is the specific heat value of water; the F is the melting heat value of water; the Ti is preset defrosting time; and C is the heating capacity of the air conditioner.
3. The air conditioner control method according to claim 1, wherein the controlling the air conditioner to enter a defrost state comprises:
and controlling the frequency of the compressor of the external machine to be a defrosting frequency value, wherein the defrosting frequency value is 60-100Hz.
4. The air conditioner control method according to claim 1, wherein the controlling the air conditioner to enter a defrost state comprises:
and controlling the opening of the second expansion valve of the internal machine to be a defrosting opening value, wherein the defrosting opening value is 100-140Pls.
5. The air conditioner control method according to claim 1, further comprising:
when the air conditioner finishes defrosting, controlling the air conditioner to enter a heating preparation state; the preliminary heating state includes: controlling the compressor of the external machine to reduce the frequency;
when the air conditioner meets a second switching condition, controlling a four-way valve to be in an open state and controlling the air conditioner to be restored to the heating mode;
the second switching condition includes at least one of:
the time for the air conditioner to enter the preliminary heating state is at least 10min;
the pressure difference between the exhaust pressure and the suction pressure of the external machine is at least 2.5MPa;
the temperature of the heat exchanger of the external machine is at least 10 ℃.
6. The air conditioner control method according to claim 1, wherein the heat storage portion includes a floor heating hydraulic system, and the external machine is heat-exchangeable with the heating hydraulic system;
the air conditioner is a heating mode, and further comprises: the external machine and the ground heating hydraulic system are controlled to be in a first heat exchange state, and the first heat exchange state is that the external machine supplies heat to the ground heating hydraulic system.
7. The air conditioner control method according to claim 6, wherein the air conditioner is in a defrost mode, controls the internal heat generation, and controls the heat storage portion to generate heat; comprising the following steps:
when the floor heating temperature value is greater than or equal to a preset temperature value, controlling the external machine to enter a preliminary defrosting state;
when the air conditioner meets the first switching condition, the four-way valve is controlled to be in a closed state, and the air conditioner is controlled to be in a defrosting state.
8. The method according to claim 7, wherein the preset temperature value is at least 30 ℃.
9. The air conditioner control method as set forth in claim 7, wherein said controlling the air conditioner to enter a defrost state includes:
the external machine and the ground heating hydraulic system are controlled to be in a second heat exchange state, and the second heat exchange state is that the ground heating hydraulic system supplies heat to the external machine.
10. The air conditioner control method according to claim 9, wherein the controlling the air conditioner to enter a defrost state further comprises:
when the floor heating temperature value is smaller than a preset temperature value,
controlling and increasing the opening of a second expansion valve of the inner machine and controlling an inner machine fan of the inner machine to stop rotating;
and controlling the external machine and the ground heating hydraulic system to be in a third heat exchange state, wherein the third heat exchange state is that the ground heating hydraulic system and the external machine stop exchanging heat.
11. The method for controlling an air conditioner according to claim 10, wherein,
the control to increase the opening degree of the second expansion valve of the internal machine includes: controlling the opening degree of the second expansion valve to be increased from a defrosting opening degree value to a fixed opening degree value;
the control of the inner machine fan of the inner machine to stop rotating comprises the following steps: controlling the inner machine fan to stop rotating from a weak wind mode;
the control of the external machine and the ground heating hydraulic system to be in a third heat exchange state comprises the following steps: and controlling the heat exchange water pump to be in a closed state.
12. An air conditioner control device, characterized in that the air conditioner control device adopts the air conditioner control method according to any one of claims 1 to 11; the air conditioner comprises an outer machine, a heat storage part and at least one inner machine, wherein the outer machine is communicated with the heat storage part and each inner machine through pipelines; the air conditioner control device includes:
the heating module is used for controlling the internal mechanism to heat and controlling the heat storage part to store heat;
and the defrosting module is used for controlling the internal mechanism to heat and controlling the heat storage part to release heat.
13. An air conditioner, comprising: a computer-readable storage medium storing a computer program and a packaged IC, the computer program, when read and executed by the packaged IC, implementing the air conditioner control method according to any one of claims 1 to 11.
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Effective date of registration: 20220920 Address after: 315100 No. 1166 Mingguang North Road, Jiangshan Town, Ningbo, Zhejiang, Yinzhou District Applicant after: NINGBO AUX ELECTRIC Co.,Ltd. Applicant after: AUX AIR CONDITIONING LIMITED BY SHARE Ltd. Address before: 315100 Oakes, No.999, Mingshu Road, Jiangshan Town, Yinzhou District, Ningbo City, Zhejiang Province Applicant before: NINGBO AUX ELECTRIC Co.,Ltd. Applicant before: Ningbo Oxfam intelligent commercial air conditioning manufacturing Co.,Ltd. |
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