CN104848578A - Air conditioner and control method for air conditioner - Google Patents
Air conditioner and control method for air conditioner Download PDFInfo
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- CN104848578A CN104848578A CN201510211998.4A CN201510211998A CN104848578A CN 104848578 A CN104848578 A CN 104848578A CN 201510211998 A CN201510211998 A CN 201510211998A CN 104848578 A CN104848578 A CN 104848578A
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- Prior art keywords
- heat exchanger
- interface
- outdoor heat
- air
- temperature
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B13/00—Compression machines, plants or systems, with reversible cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
- F25B47/02—Defrosting cycles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/027—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means
- F25B2313/02742—Compression machines, plants or systems with reversible cycle not otherwise provided for characterised by the reversing means using two four-way valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2103—Temperatures near a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2106—Temperatures of fresh outdoor air
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an air conditioner and a control method for the air conditioner. The air conditioner comprises a compressor, a first reversing component, an indoor heat exchanger, a second reversing component, a first outdoor heat exchanger and a second outdoor heat exchanger. The compressor is provided with an exhaust port and an air return port. The first reversing component is provided with a first valve port, a second valve port, a third valve port and a fourth valve port; the first valve port is communicated with one of the second valve port and the third valve port; and the fourth valve port is communicated with the other of the second valve port and the third valve port. The second reversing component is provided with a first interface, a second interface, a third interface and a fourth interface; the first interface is communicated with one of the second interface and the third interface; and the fourth interface is communicated with the other of the second interface and the third interface; a first throttle element and a first controller are connected in parallel between the first interface and a second end of the indoor heat exchanger; and the fourth interface is connected with the second valve port. The disclosed air conditioner can increase the comfort level of using the heating function of the air conditioner by a user at certain degrees.
Description
Technical field
The present invention relates to art of refrigeration units, especially relate to the control method of a kind of air-conditioner and air-conditioner.
Background technology
When winter, using air-condition device heated, the air-conditioner outdoor unit of air-conditioner there will be the phenomenon of frosting due to low temperature.Point out in prior art, to the defrosting of air-conditioner outdoor unit normally after air-conditioner runs a period of time, the heating mode of air-conditioner is switched to refrigeration mode, indoor heat exchanger is as the heat in evaporimeter absorption chamber, outdoor heat exchanger as condenser to dispel the heat to air-conditioner outdoor unit, thus realize defrosting, but in this absorption chamber, the Defrost technology of heat has had a strong impact on the comfortableness of user.
Summary of the invention
The present invention is intended to solve one of technical problem in correlation technique at least to a certain extent.For this reason, the present invention proposes a kind of air-conditioner, and described air-conditioner can improve the comfortableness of user.
The present invention also proposes a kind of control method of air-conditioner, for controlling above-mentioned air-conditioner.
According to air-conditioner of the present invention, comprising: compressor, described compressor has exhaust outlet and gas returning port; First commutation assembly, described first commutation assembly has the first valve port to the 4th valve port, described first valve port is communicated with one of them in the 3rd valve port with the second valve port, described 4th valve port and described second valve port are communicated with another in described 3rd valve port, described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port; Indoor heat exchanger, the first end of described indoor heat exchanger is connected with described 3rd valve port; Second commutation assembly, described second commutation assembly has first interface to the 4th interface, described first interface is communicated with one of them in the 3rd interface with the second interface, described 4th interface and described second interface are communicated with another in described 3rd interface, be connected with the first throttle element and the first controller that are connected in parallel between described first interface and the second end of described indoor heat exchanger, described 4th interface is connected with described second valve port; First outdoor heat exchanger and the second outdoor heat exchanger, the first end of described first outdoor heat exchanger is connected with described 3rd interface, the first end of described second outdoor heat exchanger is connected with described second interface, is connected with the second section fluid element and second controller that are connected in parallel between the second end of described first outdoor heat exchanger and the second end of described second outdoor heat exchanger.
According to air-conditioner of the present invention, by arranging the first outdoor heat exchanger and the second outdoor heat exchanger in air-conditioner outdoor unit, and second section fluid element and second controller is connected in parallel between the first outdoor heat exchanger and the second outdoor heat exchanger, second commutation assembly is set in refrigerant loop simultaneously, indoor heat exchanger can be made to continue to indoor heating when the first outdoor heat exchanger or the second outdoor heat exchanger defrost, and this improves the comfortableness of user when using air-condition device heat-production functions to a certain extent.
According to some embodiments of the present invention, described first commutation assembly is cross valve.
According to some embodiments of the present invention, described second commutation assembly is cross valve.
In some embodiments of the invention, described first controller is configured to be in normally off.
According to some embodiments of the present invention, described second controller is configured to be in normally open.
In some embodiments of the invention, described first throttle element is capillary or electric expansion valve, and described second section fluid element is capillary or electric expansion valve.
According to some embodiments of the present invention, described first outdoor heat exchanger and described second outdoor heat exchanger are two independently heat exchange elements, or described first outdoor heat exchanger and described second outdoor heat exchanger are two parts of a heat exchange element.
According to the control method of air-conditioner of the present invention, described air-conditioner is above-mentioned air-conditioner, and described control method is as follows:
When following arbitrary condition meets, control described air-conditioner and enter the first self-circulating defrosting pattern, in described first self-circulating defrosting pattern, second controller is closed, and defrosts to the first outdoor heat exchanger:
Condition one, compressor is accumulative run t1 minute after, first temperature T1 is less than the first predetermined value T11, and the first temperature T1 and the first predetermined difference value BT1 sum are less than or equal to T10, and the 3rd temperature T3 > the 3rd predetermined value T33, wherein the first temperature T1 is the temperature of the first outdoor heat exchanger, second temperature T2 is the temperature of the second outdoor heat exchanger, 3rd temperature T3 is the environment temperature in air-conditioner outdoor unit, described T10 be air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T1 in m2 minute;
Condition two, compressor is accumulative run t2 minute after, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature T3 > the 5th predetermined value T34, and continues m3 minute;
Condition three, compressor is accumulative run t3 minute after, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature T3 > the 7th predetermined value T35;
When following arbitrary condition meets, control described air-conditioner and enter the second self-circulating defrosting pattern, in described second self-circulating defrosting pattern, second controller is closed, and defrosts to the second outdoor heat exchanger:
Condition four, compressor is accumulative run t4 minute after, second temperature T2 is less than the first setting value T21, and the second temperature T2 and second sets difference BT2 sum is less than or equal to T20, and the 3rd temperature T3 > the 3rd setting value T331, wherein said T20 are air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T2 in m2 minute;
Condition five, compressor is accumulative run t5 minute after, the second temperature T2 is less than the 4th setting value T22, the 3rd temperature T3 > the 5th setting value T341, and continues m31 minute;
Condition six, compressor is accumulative run t6 minute after, the second temperature T2 is less than the 6th setting value T23, the 3rd temperature T3 > the 7th setting value T351;
Wherein when simultaneously meet enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern time, first enter the first self-circulating defrosting pattern, after enter the second self-circulating defrosting pattern again.
When air-conditioner runs the first self-circulating defrosting pattern or the second self-circulating defrosting pattern, when detect meet exit criteria time, exit defrost.
According to the control method of air-conditioner of the present invention, in the defrost process of air-conditioner, indoor heat exchanger can be made to continue to indoor radiating, thus ensure that indoor set in defrost process continue heat, this improves the comfortableness of user when using air-condition device heat-production functions to a certain extent, pass through the temperature of detection first outdoor heat exchanger and the second outdoor heat exchanger simultaneously, and itself and predetermined value are compared to determine whether to defrost, can defrost according to actual conditions, air-conditioner is avoided to carry out defrosting in frostless situation and waste energy, achieve the object of frost defrosting.
According to some embodiments of the present invention, when the first self-circulating defrosting pattern, described exit criteria is: detect T1 higher than the first set temperature value, detect that T1 continued for first scheduled time higher than the second set temperature value or detects time of defrosting to described first outdoor heat exchanger more than the first setting-up time, wherein said first set temperature value is greater than described second set temperature value; When to described second outdoor heat exchanger defrosting, described exit criteria is: detect T2 higher than the 3rd set temperature value, detect that T2 continued for second scheduled time higher than the 4th set temperature value or detects time of defrosting to described second outdoor heat exchanger more than the second setting-up time, wherein said 3rd set temperature value is greater than described 4th set temperature value.
Accompanying drawing explanation
Fig. 1 flows to schematic diagram according to the air-conditioner of the embodiment of the present invention refrigerant when kind of refrigeration cycle;
Fig. 2 flows to schematic diagram according to the refrigerant that air-conditioner is heating circulation of the embodiment of the present invention;
Refrigerant when Fig. 3 is the first outdoor heat exchanger defrosting according to the air-conditioner of the embodiment of the present invention flows to schematic diagram;
Refrigerant when Fig. 4 is the second outdoor heat exchanger defrosting according to the air-conditioner of the embodiment of the present invention flows to schematic diagram;
Control flow schematic diagram when Fig. 5 is the first outdoor heat exchanger defrosting according to the air-conditioner of the embodiment of the present invention;
Control flow schematic diagram when Fig. 6 is the second outdoor heat exchanger defrosting according to the air-conditioner of the embodiment of the present invention.
Reference numeral:
Air-conditioner 100;
Compressor 1; Exhaust outlet A; Gas returning port B;
First commutation assembly 2; First valve port C; Second valve port D; 3rd valve port E; 4th valve port F;
Second commutation assembly 3; First interface G; Second interface H; 3rd interface I; 4th interface J;
Indoor heat exchanger 4;
First throttle element 5;
First controller 6;
First outdoor heat exchanger 7;
Second outdoor heat exchanger 8;
Second section fluid element 9;
Second controller 10.
Detailed description of the invention
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings.Be exemplary below by the embodiment be described with reference to the drawings, be intended to for explaining the present invention, and can not limitation of the present invention be interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axis ", " radial direction ", orientation or the position relationship of the instruction such as " circumference " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.
In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise at least one this feature.In describing the invention, the implication of " multiple " is at least two, such as two, three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the term such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or integral; Can be mechanical connection, also can be electrical connection or each other can communication; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements, unless otherwise clear and definite restriction.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " can be fisrt feature immediately below second feature or tiltedly below, or only represent that fisrt feature level height is less than second feature.
Below with reference to the accompanying drawings describe the air-conditioner 100 according to the embodiment of the present invention, may be used for regulating indoor temperature.
As Figure 1-Figure 4, the commutation of compressor 1, first commutation assembly 2, second assembly 3, indoor heat exchanger 4, first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 can be comprised according to the air-conditioner 100 of the embodiment of the present invention.
Particularly, compressor 1 has exhaust outlet A and gas returning port B, and it is inner that refrigerant enters into compressor 1 from gas returning port B, forms the refrigerant of HTHP, discharge from exhaust outlet A after compressor 1 compresses.
First commutation assembly 2 has the first valve port C to the 4th valve port F, wherein, first valve port C is communicated with one of them in the 3rd valve port E with the second valve port D, 4th valve port F and the second valve port D are communicated with another in the 3rd valve port E, in other words, when the first valve port C is communicated with the second valve port D, the 4th valve port F is communicated with the 3rd valve port E, when the first valve port C is communicated with the 3rd valve port E, the 4th valve port F is communicated with the second valve port D.In addition, the first valve port C is connected with exhaust outlet A, and the 4th valve port F is connected with gas returning port B.
Preferably, the first commutation assembly 2 is cross valve, when the first commutation assembly 2 power-off, first valve port C is communicated with the second valve port D, and the 4th valve port F is communicated with the 3rd valve port E, when the first commutation assembly 2 is energized, first valve port C is communicated with the 3rd valve port E, and the 4th valve port F is communicated with the second valve port D.But be understandable that, the first commutation assembly 2 can be formed as other elements, can realize commutating as long as there is the first valve port C to the 4th valve port F.
The first valve port C due to the first commutation assembly 2 can be connected with one of them in the 3rd valve port E with the second valve port D and to be communicated with to realize commutating, 4th valve port F and the second valve port D are connected with another in the 3rd valve port E and are communicated with to realize commutating, this makes air-conditioner 100 can change between refrigeration mode and heating mode, thus achieves refrigerating function and the heat-production functions of air-conditioner 100.
The first end of indoor heat exchanger 4 is connected with the 3rd valve port E, and indoor heat exchanger 4 can with indoor environment heat exchange with the temperature in conditioning chamber.
Second commutation assembly 3 has first interface G to the 4th interface J, wherein, first interface G is communicated with one of them in the 3rd interface I with the second interface H, 4th interface J and the second interface H are communicated with another in the 3rd interface I, in other words, when first interface G is communicated with the second interface H, the 4th interface J is communicated with the 3rd interface I, when first interface G is communicated with the 3rd interface I, the 4th interface J is communicated with the second interface H.
The first throttle element 5 and the first controller 6 that are connected in parallel is connected with between first interface G and the second end of indoor heat exchanger 4, 4th interface J is connected with the second valve port D, first throttle element 5 can to the coolant throttle step-down in refrigerant flow, first controller 6 may be used for the break-make controlling refrigerant flow, such as, when the first controller 6 is opened, refrigerant between first interface G and the second end of indoor heat exchanger 4 is by the first controller 6, and not by first throttle element 5, when the first controller 6 cuts out, refrigerant between first interface G and the second end of indoor heat exchanger 4 is then by first throttle element 5, and not by the first controller 6.
Preferably, the second commutation assembly 3 is cross valve, when the second commutation assembly 3 power-off, first interface G is communicated with the second interface H, 4th interface J is communicated with the 3rd interface I, and when the second commutation assembly 3 is energized, first interface G is communicated with the 3rd interface I, and the 4th interface J is communicated with the second interface H.But be understandable that, the second commutation assembly 3 can be formed as other elements, can realize commutating as long as there is the first valve port C to the 4th valve port F.
The first end of the first outdoor heat exchanger 7 is connected with the 3rd interface I, the first end of the second outdoor heat exchanger 8 is connected with the second interface H, the second section fluid element 9 and second controller 10 that are connected in parallel is connected with between second end of the first outdoor heat exchanger 7 and the second end of the second outdoor heat exchanger 8, second controller 10 can be used for the break-make controlling refrigerant in refrigerant flow, and second section fluid element 9 can be used for the coolant throttle step-down in refrigerant flow.Be understandable that, when second controller 10 is opened, refrigerant between second end of the first outdoor heat exchanger 7 and the second end of the second outdoor heat exchanger 8 flows through second controller 10 to realize the conducting of refrigerant, and not by second section fluid element 9, when second controller 10 is closed, refrigerant between second end of the first outdoor heat exchanger 7 and the second end of the second outdoor heat exchanger 8 through second section fluid element 9 with reducing pressure by regulating flow, and without second controller 10, thus, by second controller 10 and second section fluid element 9 are connected in parallel between the second end of the first outdoor heat exchanger 7 and the second end of the second outdoor heat exchanger 8, can so that air-conditioner 100 defrosts to the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 respectively.
Air-conditioner 100 in the embodiment of the present invention is when defrosting to the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 respectively, indoor apparatus of air conditioner continues to indoor radiating to regulate indoor temperature, indoor auxiliary heating device also can be opened simultaneously, to increase indoor heating effect further, because indoor auxiliary heating device is prior art, be not just described in detail herein.It is appreciated of course that, when defrosting, if heat indoor environment without the need to indoor auxiliary heating device, also can be closed.In the following description, all to defrost time, indoor auxiliary heating device is opened and is described.
Such as, as shown in Figure 1, when air-conditioner 100 is in refrigeration mode, first valve port C of the first commutation assembly 2 is communicated with the second valve port D, 4th valve port F is communicated with the 3rd valve port E, the first interface G of the second commutation assembly 3 is communicated with the second interface H, 4th interface J and the 3rd interface I connects, first controller 6 is in closed condition, second controller 10 is in opening, the refrigerant of the HTHP of discharging through compressor 1 is through first commutation the first valve port C of assembly 2 and the second valve port D, through the 4th interface J and the 3rd interface I of the second commutation assembly 3, flow into the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8, and energy exchange is carried out with external environment in the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8, refrigerant flows out from the second outdoor heat exchanger 8 subsequently, through the second interface H and the first interface G of the second commutation assembly 3, flow to first throttle element 5, the refrigerant of low-temp low-pressure is formed after first throttle element 5 reducing pressure by regulating flow, flow into indoor heat exchanger 4, in indoor heat exchanger 4, evaporation endothermic is to reduce indoor temperature, refrigerant after heat exchange is through the first commutation the 3rd valve port E of assembly 2 and the 4th valve port F, and enter into compressor 1 by the gas returning port B of compressor 1, thus formation kind of refrigeration cycle, reciprocal with this.
Certainly, what those having ordinary skill in the art will appreciate that is, when air-conditioner 100 freezes, also can be that the first interface G of the second commutation assembly 3 is communicated with the 3rd interface I, 4th interface J is communicated with the second interface H, thus, the 4th interface J of the second commutation assembly 3 is flowed directly into from the refrigerant of the second valve port D outflow of the first commutation assembly 2, then the second outdoor heat exchanger 8 and the first outdoor heat exchanger 7 is flowed out to from the second interface H, flow out to the 3rd interface I from the first outdoor heat exchanger 7 subsequently, then flow to first throttle element 5 from first interface G.
As shown in Figure 2, when air-conditioner 100 is in heating mode, first valve port C of the first commutation assembly 2 is communicated with the 3rd valve port E, 4th valve port F is communicated with the second valve port D, the first interface G of the second commutation assembly 3 is communicated with the second interface H, 4th interface J is communicated with the 3rd interface I, first controller 6 cuts out, second controller 10 is opened, the refrigerant of the HTHP of discharging through the exhaust outlet A of compressor 1 flows to indoor heat exchanger 4 through the first valve port C and the 3rd valve port E, in indoor heat exchanger 4, condensation heat radiation is to heat to indoor environment, then first throttle element 5 is entered into, the refrigerant of low-temp low-pressure is formed after first throttle element 5 reducing pressure by regulating flow, through first interface G and the second interface H, enter into the second outdoor heat exchanger 8 and the first outdoor heat exchanger 7 evaporation endothermic, then flow out from the first outdoor heat exchanger 7, through the 3rd interface I and the 4th interface J, flow to the second valve port D and the 4th valve port F, and get back to compressor 1 through the gas returning port B of compressor 1, reciprocal with this, what realize air-conditioner 100 heats circulation.
Certainly, what those having ordinary skill in the art will appreciate that is, when air-conditioner 100 heats, the first interface G that may also be the second commutation assembly 3 is communicated with the 3rd interface I, 4th interface J is communicated with the second interface H, thus, the refrigerant of heat exchanger 4 outflow is after first throttle element 5 reducing pressure by regulating flow indoor, directly by first interface G and the 3rd interface I, enter into the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 evaporation endothermic, then flow out from the second outdoor heat exchanger 8, through the second interface H and the 4th interface J, flow to the second valve port D and the 4th valve port F, thus turn back to compressor 1.
As shown in Figure 3, when air-conditioner 100 is in the first self-circulating defrosting pattern, during to the first outdoor heat exchanger 7 defrost, first valve port C of the first commutation assembly 2 is communicated with the 3rd valve port E, 4th valve port F is communicated with the second valve port D, the first interface G of the second commutation assembly 3 is communicated with the 3rd interface I, 4th interface J is communicated with the second interface H, first controller 6 is opened, second controller 10 is closed, indoor auxiliary heating device is opened, the refrigerant of the HTHP of now compressor 1 exhaust outlet A discharge is through the first valve port C and the 3rd valve port E, flow into indoor heat exchanger 4 condensation heat radiation to improve indoor temperature, form the liquid refrigerants of HTHP subsequently, then by the first controller 6, flow through first interface G and the 3rd interface I, flow to the first outdoor heat exchanger 7 condensation heat radiation to defrost to the first outdoor heat exchanger 7, with after after second section fluid element 9 reducing pressure by regulating flow, enter into the second outdoor heat exchanger 8 evaporation endothermic, then by the second interface H and the 4th interface J, flow through the second valve port D and the 4th valve port F, and turn back to compressor 1 by the gas returning port B of compressor 1.In the defrost process to the first outdoor heat exchanger 7, indoor heat exchanger 4 continues to indoor heating, and the unlatching of adding indoor auxiliary heating device further increases heating effect, thus drastically increases the comfortableness of user.
As shown in Figure 4, when air-conditioner 100 is in the second self-circulating defrosting pattern, during to the second outdoor heat exchanger 8 defrost, first valve port C of the first commutation assembly 2 is communicated with the 3rd valve port E, 4th valve port F is communicated with the second valve port D, the first interface G of the second commutation assembly 3 is communicated with the second interface H, 4th interface J is communicated with the 3rd interface I, first controller 6 is opened, second controller 10 is closed, indoor auxiliary heating device is opened, now the refrigerant of the HTHP of the exhaust outlet A discharge of compressor 1 is through the first valve port C and the 3rd valve port E, flow into indoor heat exchanger 4 condensation heat radiation to improve indoor temperature, form the liquid refrigerants of HTHP subsequently, then by the first controller 6, flow through first interface G and the second interface H, flow to the second outdoor heat exchanger 8 condensation heat radiation to defrost to the second outdoor heat exchanger 8, afterwards after second section fluid element 9 reducing pressure by regulating flow, enter into evaporation endothermic in the first outdoor heat exchanger 7, subsequently by the 3rd interface I and the 4th interface J, flow through the second valve port D and the 4th valve port F, compressor 1 is turned back to through the gas returning port B of compressor 1, the defrost to the second outdoor heat exchanger 8 is back and forth realized with this.In the defrost process to the second outdoor heat exchanger 8, indoor heat exchanger 4 continues to indoor heating, and the unlatching of adding indoor auxiliary heating device further increases heating effect, thus drastically increases the comfortableness of user.
According to the air-conditioner 100 of the embodiment of the present invention, by arranging the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 in air-conditioner outdoor unit, and second section fluid element 9 and second controller 10 is connected in parallel between the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8, second commutation assembly 3 is set in refrigerant loop simultaneously, indoor heat exchanger 4 can be made to continue to indoor heating when the first outdoor heat exchanger 7 or the second outdoor heat exchanger 8 defrost, this improves the comfortableness of user when using air-condition device 100 heat-production functions to a certain extent, avoid the problem that when existing air-conditioner defrosts in outside, indoor cannot heat.
According to some embodiments of the present invention, first controller 6 is configured to be in normally off, only have when air-conditioner 100 is in defrost pattern, first controller 6 is just opened, thus, without the need to controlling the running status of the first controller 7, being convenient to the controlling run of air-conditioner 100, making air-conditioner 100 be in refrigeration for a long time or heat state.
In some embodiments of the invention, second controller 10 is configured to be in normally open, and only have when defrost pattern opened by air-conditioner 100, second controller is just closed, thus is convenient to the normal work of air-conditioner 100 when refrigeration mode and heating mode.
Alternatively, first throttle element 5 is capillary or electric expansion valve, second section fluid element 9 is also capillary or electric expansion valve, such as, first throttle element 5 and second section fluid element 9 can be capillary simultaneously or be electric expansion valve simultaneously, certainly, first throttle element 5 also can be one in capillary or electric expansion valve, and second section fluid element 9 is another in capillary or electric expansion valve.Further alternatively, first throttle element 5 and second section fluid element 9 are electric expansion valve, because the aperture by controlling electric expansion valve can control the size of cold medium flux, when electronic expansion valve opening is maximum without throttling action, therefore, without the need to arrange and the controller of electric expansion valve parallel connection can realize reducing pressure by regulating flow to refrigerant and break-make, this has saved cost to a certain extent.
According to some embodiments of the present invention, the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 are two independently heat exchange elements, thus, can improve the exchange capability of heat of outdoor heat exchanger to a great extent.Certainly, the present invention is not limited thereto, the first outdoor heat exchanger 7 and the second outdoor heat exchanger 8 also can be two parts of a heat exchange element, and not only structure is simple, but also has saved cost to a certain extent.
Below the control method of the air-conditioner according to the embodiment of the present invention is described in detail, wherein air-conditioner is air-conditioner according to the above embodiment of the present invention, the first temperature sensor, the second temperature sensor and three-temperature sensor can be provided with in air-conditioner, wherein, first temperature sensor is for detecting the temperature of the first outdoor heat exchanger, second temperature sensor is for detecting the temperature of the second outdoor heat exchanger, and three-temperature sensor is for detecting the environment temperature in air-conditioner outdoor unit.
When following arbitrary condition meets, control air-conditioner and enter the first self-circulating defrosting pattern, in the first self-circulating defrosting pattern, first valve port of the first commutation assembly is communicated with the 3rd valve port, and the 4th valve port is communicated with the second valve port, the first interface of the second commutation assembly and the 3rd orifice, 4th interface and the second orifice, first controller is opened, and second controller is closed, and defrosts to the first outdoor heat exchanger:
Condition one, compressor is accumulative run t1 minute after, first temperature T1 is less than the first predetermined value T11, and the first temperature T1 and the first predetermined difference value BT1 sum are less than or equal to T10, and the 3rd temperature T3 > the 3rd predetermined value T33, wherein the first temperature T1 is the temperature of the first outdoor heat exchanger, second temperature T2 is the temperature of the second outdoor heat exchanger, 3rd temperature T3 is the environment temperature in air-conditioner outdoor unit, T10 be air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T1 in m2 minute.
Condition two, compressor is accumulative run t2 minute after, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature T3 > the 5th predetermined value T34, and continues m3 minute.
Condition three, compressor is accumulative run t3 minute after, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature T3 > the 7th predetermined value T35.
When meeting above-mentioned condition one to any one condition in condition three between the environment temperature in the temperature, air-conditioner outdoor unit of the first outdoor heat exchanger and each preset temperature, air-conditioner just enters the first self-circulating defrosting pattern, to the first outdoor heat exchanger defrost.
Be understandable that, the concrete numerical value of the first predetermined value T11, the first predetermined difference value BT1, the 3rd predetermined value T33, the 4th predetermined value T12, the 5th predetermined value T34, the 6th predetermined value T13 and the 7th predetermined value T35 specifically can set according to actual conditions, does not just carry out concrete restriction here.In condition one, condition two, condition three, the Cumulative Elapsed Time of compressor also specifically can limit according to actual conditions simultaneously.
When following arbitrary condition meets, control air-conditioner and enter the second self-circulating defrosting pattern, in the second self-circulating defrosting pattern, first valve port of the first commutation assembly is communicated with the 3rd valve port, and the 4th valve port is communicated with the second valve port, the first interface of the second commutation assembly and the second orifice, 4th interface and the 3rd orifice, first controller is opened, and second controller is closed, and defrosts to the second outdoor heat exchanger:
Condition four, compressor is accumulative run t4 minute after, second temperature T2 is less than the first setting value T21, and the second temperature T2 and second sets difference BT2 sum is less than or equal to T20, and the 3rd temperature T3 > the 3rd setting value T331, wherein T20 be air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T2 in m2 minute.
Condition five, compressor is accumulative run t5 minute after, the second temperature T2 is less than the 4th setting value T22, the 3rd temperature T3 > the 5th setting value T341, and continues m31 minute.
Condition six, compressor is accumulative run t6 minute after, the second temperature T2 is less than the 6th setting value T23, the 3rd temperature T3 > the 7th setting value T351.
When meeting above-mentioned condition four to any one condition in condition six between the environment temperature in the temperature, air-conditioner outdoor unit of the second outdoor heat exchanger and each preset temperature, air-conditioner just enters the second self-circulating defrosting pattern, to the second outdoor heat exchanger defrost.
Be understandable that, the concrete numerical value of the first setting value T21, the second setting difference BT2, the 3rd setting value T331, the 4th setting value T22, the 5th setting value T341, the 6th setting value T23 and the 7th setting value T351 specifically can set according to actual conditions, does not just carry out concrete restriction here.In condition four, condition five, condition six, the Cumulative Elapsed Time of compressor also specifically can limit according to actual conditions simultaneously.
When simultaneously meet enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern time, first enter the first self-circulating defrosting pattern, after enter the second self-circulating defrosting pattern again.But, be understandable that, if only have one to meet defrost condition among the first outdoor heat exchanger and the second outdoor heat exchanger, then enter the self-circulating defrosting pattern of that outdoor heat exchanger meeting defrost condition.
When air-conditioner runs the first self-circulating defrosting pattern or the second self-circulating defrosting pattern, when detect meet exit criteria time, exit defrost, that is, the air-conditioner running the first self-circulating defrosting pattern or the second self-circulating defrosting pattern detect meet exit the condition of defrost time, at once exit defrost pattern, switch to heating mode or refrigeration mode.
According to the control method of air-conditioner of the present invention, in the defrost process of air-conditioner, indoor heat exchanger can be made to continue to indoor radiating, thus ensure that indoor set in defrost process continue heat, this improves the comfortableness of user when using air-condition device heat-production functions to a certain extent, pass through the temperature of detection first outdoor heat exchanger and the second outdoor heat exchanger simultaneously, and itself and predetermined value are compared to determine whether to defrost, can defrost according to actual conditions, air-conditioner is avoided to carry out defrosting in frostless situation and waste energy, ensure that the object realizing having frost defrosting.
Further, when the first self-circulating defrosting pattern, exit criteria is: detect T1 higher than the first set temperature value, detect that T1 continued for first scheduled time higher than the second set temperature value or detects time of defrosting to the first outdoor heat exchanger more than the first setting-up time, wherein the first set temperature value is greater than the second set temperature value.When to the second outdoor heat exchanger defrosting, exit criteria is: detect T2 higher than the 3rd set temperature value, detect that T2 continued for second scheduled time higher than the 4th set temperature value or detects time of defrosting to the second outdoor heat exchanger more than the second setting-up time, wherein the 3rd set temperature value is greater than the 4th set temperature value.
When the first self-circulating defrosting pattern and the second self-circulating defrosting pattern meet respective exit criteria respectively, air-conditioner exits defrost pattern immediately, thus switches to heating mode or refrigeration mode, to continue to indoor heating or refrigeration.
Such as, when air-conditioner is in heating mode, compressor open record compressor start runs to the T1 minimum of a value T10 in 12 minutes after 7 minutes continuously, and T2 minimum of a value is T20.
As shown in Figure 5, if compressor start or the first outdoor heat exchanger defrost terminate rear timing and start, compressor added up operation after 29 minutes, decision condition one, if T1 < first predetermined value T11 (such as, T11=-7 DEG C), and T1+ first predetermined difference value BT1 (such as, BT1=2.5 DEG C)≤T10, and the 3rd temperature T3 > the 3rd predetermined value T33 (such as, T33=-22 DEG C), if satisfy condition one, check whether the second outdoor heat exchanger defrost flag is 0 simultaneously, if 0, air-conditioner just enters the first self-circulating defrosting pattern, to give the first outdoor heat exchanger defrost, now the defrost flag of the first outdoor heat exchanger is 1.If do not satisfy condition one, then continue decision condition two and condition three, if having one to meet in condition two and condition three, and the second outdoor heat exchanger defrost flag is 0, then air-conditioner enters the first self-circulating defrosting pattern.
After air-conditioner enters the first self-circulating defrosting pattern 1s, continue to detect T1, when T1 > first set temperature value being detected (such as, first set temperature value is 18 DEG C) time, exit the first self-circulating defrosting pattern, otherwise continue to detect, when T1 > second set temperature value being detected (such as, second set temperature value is 8 DEG C), and continue first scheduled time (such as first scheduled time is 30 seconds), or detect that time that air-conditioner defrosts to the first outdoor heat exchanger more than the first setting-up time (such as, first setting-up time is 3 minutes) time, air-conditioner exits the first self-circulating defrosting pattern, now the defrost flag of the first outdoor heat exchanger is 0.
As shown in Figure 6, if compressor start or the second outdoor heat exchanger defrost terminate rear timing and start, compressor added up operation after 29 minutes, decision condition four, if T2 < first setting value T21 (such as, T21=-7 DEG C), and T2+ second sets difference BT2 (such as, BT2=2.5 DEG C)≤T20, and the 3rd temperature T3 > the 3rd setting value T331 (such as, T331=-22 DEG C), if satisfy condition four, check whether the first outdoor heat exchanger defrost flag is 0 simultaneously, if 0, air-conditioner just enters the second self-circulating defrosting pattern, to give the second outdoor heat exchanger defrost, now the defrost flag of the second outdoor heat exchanger is 1, if do not satisfy condition four, then air-conditioner continues decision condition five and condition six, if have one to meet in condition five and condition six, and the first outdoor heat exchanger defrost flag is 0, then air-conditioner enters the second self-circulating defrosting pattern.
After air-conditioner enters the second self-circulating defrosting pattern 1s, continue to detect T2, when T2 > the 3rd set temperature value being detected (such as, 3rd set temperature value is 18 DEG C) time, exit the second self-circulating defrosting pattern, otherwise continue to detect, when T2 > the 4th set temperature value being detected (such as, 4th set temperature value is 8 DEG C), and continue second scheduled time (such as second scheduled time is 30 seconds), or detect that time that air-conditioner defrosts to the second outdoor heat exchanger more than the second setting-up time (such as, second setting-up time is 3 minutes) time, air-conditioner exits the second self-circulating defrosting pattern, now the defrost flag of the second outdoor heat exchanger is 0.
After air-conditioner exits defrost pattern, first controller is in closed condition, second controller is in opening, the first interface of the second commutation assembly and the second orifice, 4th interface and the 3rd orifice, air-conditioner enters heating mode or refrigeration mode, exits defrost pattern and enter into heating mode certain hour (such as, 4 minutes) indoor auxiliary heating device closedown afterwards at air-conditioner.
In the description of this description, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, to the schematic representation of above-mentioned term not must for be identical embodiment or example.And the specific features of description, structure, material or feature can combine in one or more embodiment in office or example in an appropriate manner.In addition, when not conflicting, the feature of the different embodiment described in this description or example and different embodiment or example can carry out combining and combining by those skilled in the art.
Although illustrate and describe embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, revises, replace and modification.
Claims (9)
1. an air-conditioner, is characterized in that, comprising:
Compressor, described compressor has exhaust outlet and gas returning port;
First commutation assembly, described first commutation assembly has the first valve port to the 4th valve port, described first valve port is communicated with one of them in the 3rd valve port with the second valve port, described 4th valve port and described second valve port are communicated with another in described 3rd valve port, described first valve port is connected with described exhaust outlet, and described 4th valve port is connected with described gas returning port;
Indoor heat exchanger, the first end of described indoor heat exchanger is connected with described 3rd valve port;
Second commutation assembly, described second commutation assembly has first interface to the 4th interface, described first interface is communicated with one of them in the 3rd interface with the second interface, described 4th interface and described second interface are communicated with another in described 3rd interface, be connected with the first throttle element and the first controller that are connected in parallel between described first interface and the second end of described indoor heat exchanger, described 4th interface is connected with described second valve port;
First outdoor heat exchanger and the second outdoor heat exchanger, the first end of described first outdoor heat exchanger is connected with described 3rd interface, the first end of described second outdoor heat exchanger is connected with described second interface, is connected with the second section fluid element and second controller that are connected in parallel between the second end of described first outdoor heat exchanger and the second end of described second outdoor heat exchanger.
2. air-conditioner according to claim 1, is characterized in that, described first commutation assembly is cross valve.
3. air-conditioner according to claim 1, is characterized in that, described second commutation assembly is cross valve.
4. air-conditioner according to claim 1, is characterized in that, described first controller is configured to be in normally off.
5. air-conditioner according to claim 1, is characterized in that, described second controller is configured to be in normally open.
6. air-conditioner according to claim 1, is characterized in that, described first throttle element is capillary or electric expansion valve, and described second section fluid element is capillary or electric expansion valve.
7. air-conditioner according to claim 1, it is characterized in that, described first outdoor heat exchanger and described second outdoor heat exchanger are two independently heat exchange elements, or described first outdoor heat exchanger and described second outdoor heat exchanger are two parts of a heat exchange element.
8. a control method for air-conditioner, is characterized in that, described air-conditioner is the air-conditioner according to any one of claim 1-7, and described control method is as follows:
When following arbitrary condition meets, control described air-conditioner and enter the first self-circulating defrosting pattern, in described first self-circulating defrosting pattern, second controller is closed, and defrosts to the first outdoor heat exchanger:
Condition one, compressor is accumulative run t1 minute after, first temperature T1 is less than the first predetermined value T11, and the first temperature T1 and the first predetermined difference value BT1 sum are less than or equal to T10, and the 3rd temperature T3 > the 3rd predetermined value T33, wherein the first temperature T1 is the temperature of the first outdoor heat exchanger, second temperature T2 is the temperature of the second outdoor heat exchanger, 3rd temperature T3 is the environment temperature in air-conditioner outdoor unit, described T10 be air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T1 in m2 minute;
Condition two, compressor is accumulative run t2 minute after, the first temperature T1 is less than the 4th predetermined value T12, the 3rd temperature T3 > the 5th predetermined value T34, and continues m3 minute;
Condition three, compressor is accumulative run t3 minute after, the first temperature T1 is less than the 6th predetermined value T13, the 3rd temperature T3 > the 7th predetermined value T35;
When following arbitrary condition meets, control described air-conditioner and enter the second self-circulating defrosting pattern, in described second self-circulating defrosting pattern, second controller is closed, and defrosts to the second outdoor heat exchanger:
Condition four, compressor is accumulative run t4 minute after, second temperature T2 is less than the first setting value T21, and the second temperature T2 and second sets difference BT2 sum is less than or equal to T20, and the 3rd temperature T3 > the 3rd setting value T331, wherein said T20 are air conditioner heat-production run and compressor start continuous service after m1 minute to the minimum of a value of the T2 in m2 minute;
Condition five, compressor is accumulative run t5 minute after, the second temperature T2 is less than the 4th setting value T22, the 3rd temperature T3 > the 5th setting value T341, and continues m31 minute;
Condition six, compressor is accumulative run t6 minute after, the second temperature T2 is less than the 6th setting value T23, the 3rd temperature T3 > the 7th setting value T351;
Wherein when simultaneously meet enter the first self-circulating defrosting pattern and the second self-circulating defrosting pattern time, first enter the first self-circulating defrosting pattern, after enter the second self-circulating defrosting pattern again.
When air-conditioner runs the first self-circulating defrosting pattern or the second self-circulating defrosting pattern, when detect meet exit criteria time, exit defrost.
9. the control method of air-conditioner according to claim 8, is characterized in that,
When the first self-circulating defrosting pattern, described exit criteria is: detect T1 higher than the first set temperature value, detect that T1 continued for first scheduled time higher than the second set temperature value or detects time of defrosting to described first outdoor heat exchanger more than the first setting-up time, wherein said first set temperature value is greater than described second set temperature value;
When to described second outdoor heat exchanger defrosting, described exit criteria is: detect T2 higher than the 3rd set temperature value, detect that T2 continued for second scheduled time higher than the 4th set temperature value or detects time of defrosting to described second outdoor heat exchanger more than the second setting-up time, wherein said 3rd set temperature value is greater than described 4th set temperature value.
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