CN105066349A - Inner machine mode switching control method of heat recovery multi-union machine and heat recovery multi-union machine - Google Patents
Inner machine mode switching control method of heat recovery multi-union machine and heat recovery multi-union machine Download PDFInfo
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- CN105066349A CN105066349A CN201510472246.3A CN201510472246A CN105066349A CN 105066349 A CN105066349 A CN 105066349A CN 201510472246 A CN201510472246 A CN 201510472246A CN 105066349 A CN105066349 A CN 105066349A
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- heat exchanger
- indoor heat
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- compressor
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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
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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
- F24F13/24—Means for preventing or suppressing noise
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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
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention discloses an inner machine mode switching control method of a heat recovery multi-union machine and the heat recovery multi-union machine. The heat recovery multi-union machine comprises a compressor, a reversing valve, an outdoor heat exchanger, a high-pressure gas pipe, a liquid pipe, a low-pressure gas pipe, an indoor heat exchanger and a cold and heat converter corresponding to the indoor heat exchanger. The inner machine mode switching control method includes the steps that when refrigerating mode and heating mode of the indoor heat exchanger are switched, whether the revering valve needs to be reversed or not is judged; the corresponding cold and heat converter is operated and the reversing valve is operated to control the indoor heat exchanger to conduct switching of the refrigerating mode and heating mode if the judgment result shows that the revering valve needs to be reversed; and the corresponding cold and heat converter is operated to control the indoor heat exchanger to conduct switching of the refrigerating mode and heating mode if the judgment result shows that the reversing valve does not need to be reversed. By means of the inner machine mode switching control method, selective distinguishing can be conducted according to different conversion situations, and flexible handling is performed, so that noise is reduced in an oriented manner, and the use comfort of users is improved.
Description
Technical field
The present invention relates to field of air conditioning, particularly machine patten transformation control method and heat-reclamation multi-compressors in a kind of heat-reclamation multi-compressors.
Background technology
Along with the development of multi-connected machine technology, heat-reclamation multi-compressors product more and more obtains the attention of user as the product of a efficient energy-saving.
Heat-reclamation multi-compressors can realize part indoor heat exchanger running refrigerating pattern in system, and part indoor heat exchanger runs the function of heating mode.In prior art, when indoor heat exchanger carries out the conversion of refrigeration mode and heating mode, usually controlled by the cold and hot converter corresponding with indoor heat exchanger.But, due to indoor heat exchanger carry out refrigeration mode and heating mode conversion time, relate to refrigerant and flow to the problem switched, the interior machine patten transformation control method conversion noise of prior art is larger, especially when high-pressure side refrigerant and the conversion of low-pressure side refrigerant, the impact of pressure can cause obvious noise and pipeline vibration, affects comfortableness when user uses.
Summary of the invention
The object of the present invention is to provide a kind of interior machine patten transformation control method and heat-reclamation multi-compressors of heat-reclamation multi-compressors, be intended to lower the noise that indoor heat exchanger carries out in refrigeration mode and heating mode transfer process, improve comfortableness when user uses.
This first aspect provides a kind of interior machine patten transformation control method of heat-reclamation multi-compressors, described heat-reclamation multi-compressors comprises compressor, reversal valve, outdoor heat exchanger, high-pressure air pipe, liquid pipe, low pressure gas pipe, indoor heat exchanger and the cold and hot converter corresponding with described indoor heat exchanger, described high-pressure air pipe is connected with the outlet of described compressor, described low pressure gas pipe is connected with the import of described compressor, described outdoor heat exchanger is connected on described liquid pipe, described indoor heat exchanger is connected with described liquid pipe, described reversal valve is for controlling the break-make of described liquid pipe and described high-pressure air pipe and the break-make with described low pressure gas pipe, described cold and hot converter is for controlling corresponding described indoor heat exchanger and the break-make of described high-pressure air pipe and the break-make with described low pressure gas pipe, described interior machine patten transformation control method comprises: when carrying out refrigeration mode and heating mode conversion to described indoor heat exchanger, judge that described reversal valve is the need of commutation, if judged result is yes, then operate corresponding described cold and hot converter and operate indoor heat exchanger described in described reversal valve co-controlling and carry out refrigeration mode and heating mode conversion, if judged result is no, the described cold and hot converter then operating correspondence controls described indoor heat exchanger and carries out refrigeration mode and heating mode conversion.
Further, described heat-reclamation multi-compressors has refrigeration and to be dominant operational mode and heat the operational mode that is dominant, judge that described reversal valve comprises the need of commutation: if carrying out before and after refrigeration mode and heating mode conversion to described indoor heat exchanger, described heat-reclamation multi-compressors is in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant respectively, then described judged result is yes; If carrying out before and after refrigeration mode and heating mode conversion to described indoor heat exchanger, described heat-reclamation multi-compressors be not in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant, then described judged result is no.
Further, judge that described reversal valve comprises the need of commutation: if conversion load is greater than predetermined load, then described judged result is yes, if described conversion load is less than or equal to described predetermined load, then described judged result is no, wherein, described conversion load is the load of the described indoor heat exchanger carrying out refrigeration mode and heating mode conversion.
Further, described compressor is frequency-changeable compressor, before converter cold and hot described in complete operation, make described compressor reduce frequency and run to the load needed, after converter cold and hot described in complete operation, make described compressor return to the load operation of needs.
Further, before converter cold and hot described in complete operation, described compressor frequency is made to be reduced to minimum load operation.
Further, the described cold and hot converter of operation correspondence comprises: the described cold and hot converter of operation correspondence makes described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect, described indoor heat exchanger is kept to be communicated with described liquid pipe, until the pressure of described indoor heat exchanger is in predetermined pressure range, then operate corresponding described cold and hot converter make described indoor heat exchanger be in conversion after mode operation.
Further, described compressor is frequency-changeable compressor, make before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect at the described cold and hot converter that operation is corresponding, make described compressor reduce frequency to run to the load needed, after mode operation after the described cold and hot converter that operation is corresponding makes described indoor heat exchanger be in conversion, described compressor is made to return to the load operation of needs.
Further, when described indoor heat exchanger is converted to heating mode from refrigeration mode, the described cold and hot converter that the mode operation after described cold and hot converter corresponding to operation makes described indoor heat exchanger be in conversion comprises operation corresponding makes described indoor heat exchanger be communicated with described high-pressure air pipe and disconnect with described low pressure gas pipe.
Further, if described judged result is yes, first operates corresponding described cold and hot converter and make described indoor heat exchanger be communicated with described high-pressure air pipe and disconnect with described low pressure gas pipe, then operate the commutation of described reversal valve.
Further, described compressor is frequency-changeable compressor, make before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect at the described cold and hot converter that operation is corresponding, make described compressor reduce frequency to run to the load needed, after the described reversal valve commutation of operation, described compressor is made to return to the load operation of needs.
Further, when described indoor heat exchanger is converted to refrigeration mode from heating mode, the described cold and hot converter that the mode operation after described cold and hot converter corresponding to operation makes described indoor heat exchanger be in conversion comprises operation corresponding makes described indoor heat exchanger disconnect with described high-pressure air pipe and be communicated with described low pressure gas pipe.
Further, if described judged result is yes, first operate the commutation of described reversal valve, the more described cold and hot converter operating correspondence makes described indoor heat exchanger disconnect with described high-pressure air pipe and be communicated with described low pressure gas pipe.
Further, described compressor is frequency-changeable compressor, after the commutation of operation described reversal valve, described cold and hot converter corresponding to operation make before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect, make described compressor reduce frequency to run to the load needed, after the described cold and hot converter that operation is corresponding makes described indoor heat exchanger disconnect with described high-pressure air pipe and is communicated with described low pressure gas pipe, described compressor is made to return to the load operation of needs.
Second aspect present invention provides a kind of heat-reclamation multi-compressors, described heat-reclamation multi-compressors comprises compressor, reversal valve, outdoor heat exchanger, high-pressure air pipe, liquid pipe, low pressure gas pipe, indoor heat exchanger and the cold and hot converter corresponding with described indoor heat exchanger, described high-pressure air pipe is connected with the outlet of described compressor, described low pressure gas pipe is connected with the import of described compressor, described outdoor heat exchanger is connected on described liquid pipe, described indoor heat exchanger is connected with described liquid pipe, described reversal valve is for controlling the break-make of described liquid pipe and described high-pressure air pipe and the break-make with described low pressure gas pipe, described cold and hot converter is for controlling corresponding described indoor heat exchanger and the break-make of described high-pressure air pipe and the break-make with described low pressure gas pipe, described heat-reclamation multi-compressors also comprises mode changeover control device, interior machine patten transformation control method according to any one of described mode changeover control device application first aspect present invention carries out refrigeration mode and heating mode conversion and control to the indoor heat exchanger of described heat-reclamation multi-compressors.
Based on machine patten transformation control method and heat-reclamation multi-compressors in heat-reclamation multi-compressors provided by the invention, the cold and hot converter corresponding with indoor heat exchanger is relied on to commutate relative to simple in prior art, and do not relate to the interior machine patten transformation control method of the control of entire system, the interior machine patten transformation control method of above heat-reclamation multi-compressors is when carrying out refrigeration mode and heating mode conversion, can the selective differentiation according to different change over conditions, sweetly disposition, make reversal valve participate in interior machine patten transformation in good time, reversal valve can be relied on to commutate by high-low pressure Sources controlling firmly, thus reduce noise targeted specifically, improve comfortableness when user uses.
By referring to the detailed description of accompanying drawing to exemplary embodiment of the present invention, further feature of the present invention and advantage thereof will become clear.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the principle schematic of the heat-reclamation multi-compressors of the interior machine patten transformation control method of the heat-reclamation multi-compressors of the application embodiment of the present invention.
Fig. 2 is the control flow chart of the interior machine patten transformation control method of the heat-reclamation multi-compressors of the embodiment of the present invention.
In Fig. 1, each Reference numeral represents respectively:
1, compressor;
2, gas-liquid separator;
3, equilibrated valve;
4, low pressure gas pipe;
5, the first cold and hot converter;
5A, the first indoor set heat magnetic valve;
5B, the first indoor set refrigeration magnetic valve;
6, the second cold and hot converter;
6A, the second indoor set heat magnetic valve;
6B, the second indoor set refrigeration magnetic valve;
7, the first indoor heat exchanger;
8, the second indoor heat exchanger;
12, liquid pipe;
13, high-pressure air pipe;
14, high-pressure air pipe check valve;
15, outdoor throttling arrangement;
16, outdoor heat exchanger;
17, reversal valve;
18, oil eliminator;
19, the first indoor throttling arrangement;
20, the second indoor throttling arrangement;
21, capillary.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part of authorizing description.In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
If relate to an element to be connected with another element, then technical term " connection " both can be an element and do not have the direct of other element between another element and be connected, and also can be an element and have the indirect of other element one or more between another element and be connected.
Fig. 1 is the principle schematic of the heat-reclamation multi-compressors of the interior machine patten transformation control method of the heat-reclamation multi-compressors of the application embodiment of the present invention.Fig. 2 is the control flow chart of the interior machine patten transformation control method of the heat-reclamation multi-compressors of the embodiment of the present invention.
As shown in Figure 1, in the present embodiment, heat-reclamation multi-compressors comprises compressor 1, gas-liquid separator 2, equilibrated valve 3, low pressure gas pipe 4, first cold and hot converter 5, first indoor set heats magnetic valve 5A, first indoor set refrigeration magnetic valve 5B, second cold and hot converter 6, second indoor set heats magnetic valve 6A, second indoor set refrigeration magnetic valve 6B, first indoor heat exchanger 7, second indoor heat exchanger 8, liquid pipe 12, high-pressure air pipe 13, high-pressure air pipe check valve 14, outdoor throttling arrangement 15, outdoor heat exchanger 16, reversal valve 17, oil eliminator 18, first indoor throttling arrangement 19, second indoor throttling arrangement 20, capillary 21 etc.
High-pressure air pipe 13 is connected with the outlet of compressor 1 by oil eliminator 18.High-pressure air pipe check valve 14 is arranged on high-pressure air pipe 13, and high-pressure air pipe 13 is also connected with the first indoor heat exchanger 7 by the first cold and hot converter 5, and is connected with the second indoor heat exchanger 8 by the second cold and hot converter 6.
Low pressure gas pipe 4 is connected with the import of compressor 1 by gas-liquid separator 2, and low pressure gas pipe 4 is also connected with the first indoor heat exchanger 7 by the first cold and hot converter 5, and is connected with the second indoor heat exchanger 8 by the second cold and hot converter 6.
Outdoor heat exchanger 16 and outdoor throttling arrangement 15 are serially connected with on liquid pipe 12.Wherein a port of outdoor heat exchanger 16 is connected with reversal valve 17.Liquid pipe 12 is also connected with the first indoor heat exchanger 7 by the first indoor throttling arrangement 19, and is connected with the second indoor heat exchanger 8 by the second indoor throttling arrangement 20.
Reversal valve 17 is for controlling liquid pipe 12 and the break-make of high-pressure air pipe 13 and the break-make with low pressure gas pipe 4.In the present embodiment, reversal valve 17 is cross valve, four ports of cross valve connect respectively high-pressure air pipe 13, outdoor heat exchanger 16 a port, be positioned at the low pressure gas pipe 4 of the inlet side of gas-liquid separator 2 and the one end by capillary 21, the other end of capillary 21 is connected with the import of compressor 1.When cross valve obtains electric, liquid pipe 12 can be made to be communicated with low pressure gas pipe 4, high-pressure air pipe 13 is communicated with by capillary 21 with low pressure gas pipe 4.During cross valve power down, high-pressure air pipe 13 can be made to be communicated with liquid pipe 12, the import of gas-liquid separator 2 is communicated with by capillary 21 with outlet.
First cold and hot converter 5 is for controlling the first indoor heat exchanger 7 and the break-make of high-pressure air pipe 13 and the break-make with low pressure gas pipe 4.In the present embodiment, the first cold and hot converter 5 comprises the first indoor set and heats magnetic valve 5A and the first indoor set refrigeration magnetic valve 5B.First indoor set heats magnetic valve 5A and is connected between high-pressure air pipe 13 and the first indoor heat exchanger 7.First indoor set refrigeration magnetic valve 5B is connected between low pressure gas pipe 4 and the first indoor heat exchanger 7.
Second cold and hot converter 6 is for controlling the second indoor heat exchanger 8 and the break-make of high-pressure air pipe 13 and the break-make with low pressure gas pipe 4.Second cold and hot converter 6 comprises the second indoor set and heats magnetic valve 6A and the second indoor set refrigeration magnetic valve 6B.Second indoor set heats magnetic valve 6A and is connected between high-pressure air pipe 13 and the second indoor heat exchanger 8.Second indoor set refrigeration magnetic valve 6B is connected between low pressure gas pipe 4 and the second indoor heat exchanger 8.
In the present embodiment, the first indoor throttling arrangement 19 is electric expansion valve, and the first indoor throttling arrangement 19 is connected between liquid pipe 12 and the first indoor heat exchanger 7, passes in and out the coolant quantity of the first indoor heat exchanger 7 for controlling liquid pipe 12.
In the present embodiment, the second indoor throttling arrangement 20 is electric expansion valve, and the second indoor throttling arrangement 20 is connected between liquid pipe 12 and the second indoor heat exchanger 8, passes in and out the coolant quantity of the second indoor heat exchanger 8 for controlling liquid pipe 12.
In the present embodiment, comprise two indoor heat exchangers in parallel and with two indoor heat exchangers, two cold and hot converters one to one, in other embodiments, the indoor heat exchanger of three more parallels and more than three the cold and hot converters corresponding with more than three indoor heat exchangers can be comprised.
As shown in Figure 1, high-pressure air pipe 13, liquid pipe 12 and low pressure gas pipe 4 are also respectively arranged with corresponding control valve.The two ends of equilibrated valve 3 are connected with high-pressure air pipe 13 and low pressure gas pipe 4 respectively.
Equilibrated valve 3 is when the whole running refrigerating pattern of the indoor heat exchanger of this heat-reclamation multi-compressors, and bypass high pressure lateral pressure, avoids the formation of high pressure dead band.
There is in the system of this heat-reclamation multi-compressors the refrigerant of three kinds of states simultaneously.
High-pressure air pipe 13 provides high-pressure gaseous refrigerant, high-pressure gaseous refrigerant can heat magnetic valve 5A by high-pressure air pipe check valve 14 and the first indoor set and enter in the first indoor heat exchanger 7, heat magnetic valve 6A by high-pressure air pipe check valve 14 and the second indoor set and enter the second indoor heat exchanger 8, thus high pressure thermal source can be provided to indoor heat exchanger through the control of corresponding cold and hot converter.
When high-pressure air pipe 13 is communicated with liquid pipe 12, high-pressure gaseous refrigerant obtains liquid refrigerants after outdoor heat exchanger 16 cools, and liquid pipe 12 can provide liquid refrigerants respectively to the first indoor heat exchanger 7 and the second indoor heat exchanger 8.
Low pressure refrigerant, after the first indoor heat exchanger 7 and the second indoor heat exchanger 8 freeze or heat, is sent back to the import of compressor 1 by low pressure gas pipe 4.
High-pressure air pipe 13 can selectablely with corresponding indoor heat exchanger be communicated with the control of low pressure gas pipe 4 through cold and hot converter, and indoor heat exchanger is run under the refrigeration mode needed or heating mode.
Heat-reclamation multi-compressors can realize part indoor heat exchanger in system and run in cooling mode, the function that part indoor heat exchanger runs in a heating mode.Wherein, high-pressure air pipe 13 and liquid pipe 12 can be selected when heating mode to be formed and to heat loop, liquid pipe 12 and low pressure gas pipe 4 can be selected when refrigeration mode to form refrigerating circuit.
In order to reduce the noise of heat-reclamation multi-compressors in refrigeration mode and heating mode transfer process and the reliability of increase patten transformation, the present embodiment proposes a kind of interior machine patten transformation control method of heat-reclamation multi-compressors, when this interior machine patten transformation control method is included in and carries out refrigeration mode and heating mode conversion to indoor heat exchanger, judge that reversal valve 17 is the need of commutation, if judged result is yes, then operate corresponding cold and hot converter and reversing valve operated 17 co-controlling indoor heat exchangers carry out refrigeration mode and heating mode conversion, if judged result is no, then operate corresponding cold and hot converter control indoor heat exchanger and carry out refrigeration mode and heating mode conversion.
A kind of judge that reversal valve 17 the need of commutation can be: heat-reclamation multi-compressors have refrigeration be dominant operational mode with heat the operational mode that is dominant, judge that reversal valve 17 comprises the need of commutation: if carrying out before and after refrigeration mode and heating mode conversion to indoor heat exchanger, heat-reclamation multi-compressors is in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant respectively, then judged result is yes; If carrying out before and after refrigeration mode and heating mode conversion to indoor heat exchanger, heat-reclamation multi-compressors be not in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant, then judged result is no.Wherein, be dominant operational mode and the division that heats the operational mode that is dominant of refrigeration can be, when in heat-reclamation multi-compressors, heating load is more than cooling load, heat-reclamation multi-compressors is in and heats the operational mode that is dominant, otherwise, when in heat-reclamation multi-compressors, heating load is less than cooling load, then heat-reclamation multi-compressors is in refrigeration and is dominant operational mode.
Another kind judges that reversal valve 17 the need of commutation can be: if conversion load is greater than predetermined load, then judge that reversal valve 17 is yes the need of the judged result of commutation, if conversion load is less than or equal to predetermined load, then judge that reversal valve 17 is no the need of the judged result of commutation.Wherein, the load that load is the indoor heat exchanger carrying out refrigeration mode and heating mode conversion is changed.
The cold and hot converter corresponding with indoor heat exchanger is relied on to commutate relative to simple in prior art, and do not relate to the interior machine patten transformation control method of the control of entire system, the interior machine patten transformation control method of above heat-reclamation multi-compressors is when carrying out refrigeration mode and heating mode conversion, can the selective differentiation according to different change over conditions, sweetly disposition, make reversal valve 17 participate in interior machine patten transformation in good time, reversal valve 17 is relied on to commutate by high-low pressure Sources controlling firmly, thus reduce noise targeted specifically, improve comfortableness when user uses.Further, when reversal valve 17 participates in the control of interior machine patten transformation, also reduce the possibility making the refrigerant of heat-reclamation multi-compressors system can not complete normal circulation, improve the reliability of patten transformation.
In the present embodiment preferably, compressor 1 is frequency-changeable compressor, before the cold and hot converter that complete operation is corresponding, make compressor 1 reduce frequency and run to the load needed, after the cold and hot converter that complete operation is corresponding, make compressor 1 return to the load operation of needs.Reducing frequency by making compressor 1 to run, complete machine load during patten transformation can be reduced, relative to not reducing for the conversion of frequency straight swap-in row mode, the pressure differential in transfer process can be reduced, thus reduce the noise in mode transition procedure.
Preferably, before the cold and hot converter that complete operation is corresponding, compressor 1 frequency is made to be reduced to minimum load operation.By making compressor reduce frequency to minimum load operation, complete machine load during patten transformation can be made to be decreased to minimum, reducing the pressure differential in transfer process as much as possible, thus reduce the noise in mode transition procedure further.
Preferably, the cold and hot converter of operation correspondence comprises: the cold and hot converter of operation correspondence makes indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect, indoor heat exchanger is kept to be communicated with liquid pipe 12, until indoor heat exchanger pressure is in predetermined pressure range, the mode operation after cold and hot converter corresponding to operation makes indoor heat exchanger be in conversion.When needing indoor heat exchanger to be converted to heating mode from refrigeration mode, the cold and hot converter of operation correspondence makes indoor heat exchanger be communicated with high-pressure air pipe 13 and disconnect with low pressure gas pipe 4, when needing indoor heat exchanger to be converted to refrigeration mode from heating mode, the cold and hot converter of operation correspondence makes indoor heat exchanger disconnect with high-pressure air pipe 13 and be communicated with low pressure gas pipe 4.
Due to pressure in indoor heat exchanger can be made before the pattern being finally converted to needs close to the pressure in liquid pipe 12, therefore conversion is the conversion carried out between middle pressure refrigerant and low pressure refrigerant or the conversion carried out between high pressure refrigerant and middle pressure refrigerant, for directly changing at high pressure refrigerant and low pressure refrigerant, pressure differential when changing can be reduced, thus noise when reducing conversion, noise is controlled in a rational scope.
Preferably, when compressor 1 is frequency-changeable compressor, make before indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect at the cold and hot converter that operation is corresponding, make compressor 1 reduce frequency to run below the load needed, after mode operation after the cold and hot converter that operation is corresponding makes indoor heat exchanger be in conversion, compressor 1 is made to return to the load operation of needs.
See Fig. 1 and Fig. 2, the transfer process of refrigeration mode and heating mode when judging that reversal valve 17 is no the need of the judged result commutated is described below for the first indoor set heat exchanger 7.
When judging that reversal valve 17 is no the need of the judged result commutated, compressor 1 is first made to reduce frequency to load minimum operation, operating the first cold and hot converter 5 again makes the first indoor set heat magnetic valve 5A and the first indoor set refrigeration magnetic valve 5B closes simultaneously, all disconnect with high-pressure air pipe 13 and low pressure gas pipe 4 to make the first indoor heat exchanger 7, and keep the first indoor throttling arrangement 19 to open the first indoor heat exchanger 7 being communicated with, until the pressure of the first indoor heat exchanger 7 is in predetermined pressure range with liquid pipe 12.
Wherein, predetermined pressure range can be the pressure limit of the setting that indoor heat exchanger can reach, also can be the multiple scope of refrigerant pressure in liquid pipe 12, such as, when representing refrigerant pressure in liquid pipe 12 with p, predetermined pressure range can be 90%p ~ 110%p.
If after this need the first indoor set heat exchanger 7 to be converted to heating mode from refrigeration mode, then open the first indoor set to heat magnetic valve 5A the first indoor heat exchanger 7 is communicated with high-pressure air pipe 13, close the first indoor set refrigeration magnetic valve 5B and the first indoor heat exchanger 7 is disconnected with low pressure gas pipe 4; If need the first indoor heat exchanger 7 to be converted to refrigeration mode from heating mode, then close the first indoor set to heat magnetic valve 5A the first indoor heat exchanger 7 and high-pressure air pipe 13 are disconnected, open the first indoor set refrigeration magnetic valve 5B and the first indoor heat exchanger 7 is communicated with low pressure gas pipe 4.
After pattern after the cold and hot converter 5 of control first makes the first indoor heat exchanger 7 be in conversion, make compressor 1 return to the load operation of needs, patten transformation is complete.
Preferably, if judge that reversal valve 17 is yes the need of the judged result of commutation, and indoor heat exchanger is when being converted to heating mode from refrigeration mode, the cold and hot converter of operation correspondence makes indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect, indoor heat exchanger is kept to be communicated with liquid pipe 12, until when indoor heat exchanger pressure is in predetermined pressure range, controls cold and hot converter and make indoor heat exchanger be communicated with high-pressure air pipe 13 and disconnect with low pressure gas pipe 4, then control reversal valve 17 and commutate.
The commutation of reversal valve 17 not only relates to noise problem; also relate to pressure control problems; the process control that reversal valve 17 commutates is bad to be existed and forms possibility in high pressure dead band, and now pressure conducting cannot rise and cause pressure protect, the reliability that Effect Mode is changed instantaneously.In the present embodiment, if judge that reversal valve 17 is yes the need of the judged result of commutation, from refrigeration mode in heating mode transfer process, pattern after first making corresponding cold and hot converter switch to conversion, reversal valve 17 is made to commutate again, the noise in transfer process can be reduced, and improve the reliability of patten transformation.
Further preferably, when compressor 1 is frequency-changeable compressor, make before indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect at the cold and hot converter that operation is corresponding, make compressor 1 reduce frequency to run to the load needed, after reversing valve operated 17 commutations, compressor 1 is made to return to the load operation of needs.As previously mentioned, compressor frequency reducing runs the noise that can reduce in mode transition procedure.
In addition preferably, if judge that reversal valve 17 is yes the need of the judged result of commutation, and indoor heat exchanger is when being converted to refrigeration mode from heating mode, reversing valve operated 17 commutations, the cold and hot converter of operation correspondence makes indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect, indoor heat exchanger is kept to be communicated with liquid pipe 12, until when indoor heat exchanger pressure is in predetermined pressure range, the cold and hot converter of operation correspondence makes indoor heat exchanger disconnect with high-pressure air pipe 13 and be communicated with low pressure gas pipe 4.
If judge that reversal valve 17 is yes the need of the judged result of commutation, and indoor heat exchanger is when being converted to refrigeration mode from heating mode, make reversal valve 17 prior to the cold and hot changer actions of correspondence, corresponding cold and hot converter can be made to wait for action after pressure balance, thus reach the effect reducing noise.
Further preferably, when compressor 1 is frequency-changeable compressor, after reversing valve operated 17 commutations, cold and hot converter corresponding to operation make before indoor heat exchanger and high-pressure air pipe 13 and low pressure gas pipe 4 all disconnect, make compressor 1 reduce frequency to run below the load needed, after the cold and hot converter that operation is corresponding makes indoor heat exchanger disconnect with high-pressure air pipe 13 and is communicated with low pressure gas pipe 4, compressor 1 is made to return to the load operation of needs.As previously mentioned, compressor 1 frequency reducing runs the noise that can reduce in mode transition procedure.
See Fig. 1 and Fig. 2, below for the second indoor set heat exchanger 8 illustrate judge reversal valve 17 the need of the judged result commutated be time refrigeration mode and the transfer process of heating mode.
When judging the judged result of reversal valve 17 the need of commutation as being and needing the second indoor heat exchanger 8 to be converted to heating mode from refrigeration mode, compressor 1 is first made to reduce frequency in minimum load operation, the second indoor set of the second cold and hot converter 6 is made to heat magnetic valve 6A again and the second indoor set refrigeration magnetic valve 6B disconnects simultaneously, all disconnect with high-pressure air pipe 13 and low pressure gas pipe 4 to make the second indoor heat exchanger 8, and make the second indoor throttling arrangement 20 open maintenance second indoor heat exchanger 8 to be communicated with liquid pipe 12, until when the refrigerant pressure in the second indoor heat exchanger 8 is in predetermined pressure range, the second indoor set controlling the second cold and hot converter 6 heats magnetic valve 6A and opens and the second indoor set refrigeration magnetic valve 6B disconnection, disconnect with low pressure gas pipe 4 to make the second indoor heat exchanger 8 be communicated with high-pressure air pipe 13, control reversal valve 17 again to commutate, in the present embodiment, reversal valve 17 is made to be switched to obtain electricity condition from power down, liquid pipe 12 is made to disconnect with high-pressure air pipe 13 and be communicated with low pressure gas pipe 4, outdoor heat exchanger 16 is switched to heating mode from refrigeration mode.The frequency finally making compressor 1 return to needs is run, and patten transformation completes.
When judging the judged result of reversal valve 17 the need of commutation as being and needing the second indoor heat exchanger 8 to be converted to refrigeration mode from heating mode, reversing valve operated 17 commutations, in the present embodiment, reversal valve 17 is made to change power-down state into by obtaining electricity condition, make liquid pipe 12 be communicated with high-pressure air pipe 13 and disconnect with low pressure gas pipe 4, outdoor heat exchanger 16 is switched to refrigeration mode from heating mode.Control compressor 1 and reduce frequency to minimum load operation.The second indoor set of the second cold and hot converter 6 is made to heat magnetic valve 6A and the second indoor set refrigeration magnetic valve 6B disconnection, all disconnect with high-pressure air pipe 13 and low pressure gas pipe 14 to make the second indoor heat exchanger 7, and make the second indoor throttling arrangement 20 open heat exchanger 8 in maintenance second to be communicated with liquid pipe 12, until when the refrigerant pressure in the second indoor heat exchanger 8 is in predetermined pressure range, the second indoor set controlling the second cold and hot converter 6 heats that magnetic valve 6A disconnects and the second indoor set refrigeration magnetic valve 6B opens, be communicated with low pressure gas pipe 4 to make the second indoor heat exchanger 8 disconnect with high-pressure air pipe 13.The frequency finally making compressor 1 return to needs is run, and patten transformation completes.
The present embodiment also provides a kind of heat-reclamation multi-compressors.This heat-reclamation multi-compressors comprises compressor 1, reversal valve 17, outdoor heat exchanger 16, high-pressure air pipe 13, liquid pipe 12, low pressure gas pipe 4, indoor heat exchanger and the cold and hot converter corresponding with indoor heat exchanger, high-pressure air pipe 13 is connected with the outlet of compressor 1, low pressure gas pipe 4 is connected with the import of compressor 1, outdoor heat exchanger 16 is connected on liquid pipe 12, reversal valve 17 is for controlling liquid pipe 12 and the break-make of high-pressure air pipe 13 and the break-make with low pressure gas pipe 4, cold and hot converter is for controlling corresponding indoor heat exchanger and the break-make of high-pressure air pipe 13 and the break-make with low pressure gas pipe 4.This heat-reclamation multi-compressors also comprises mode changeover control device, and the interior machine patten transformation control method of this mode changeover control device application of aforementioned carries out refrigeration mode and heating mode conversion and control to the indoor heat exchanger of heat-reclamation multi-compressors.
The control module that mode changeover control device can comprise judge module and be coupled with judge module, control module is also coupled with reversal valve 17 and cold and hot converter respectively.Judge module is for judging whether reversal valve 17 commutates.When judged result is no, the cold and hot converter of control module operation correspondence controls indoor heat exchanger and carries out refrigeration mode and heating mode conversion.When judged result is for being, control module reversing valve operated 17 and corresponding cold and hot converter co-controlling indoor heat exchanger carry out refrigeration mode and heating mode conversion.
This heat-reclamation multi-compressors can the patten transformation of mode conversion method to the indoor heat exchanger of heat-reclamation multi-compressors of application of aforementioned heat-reclamation multi-compressors control automatically.
Known according to above description, the interior machine patten transformation control method of the heat-reclamation multi-compressors of the above embodiment of the present invention and heat-reclamation multi-compressors provide a kind of a kind of technical scheme that can reduce noise when being applicable to heat-reclamation multi-compressors indoor heat exchanger patten transformation, can according to the change over condition that indoor heat exchanger is different selective differentiation, sweetly disposition, reduce noise targeted specifically by the participation of reversal valve, improve comfortableness when user uses.Further, by the setting of the operating sequence of reversal valve and cold and hot converter, when indoor heat exchanger is converted to refrigeration mode from heating mode, the first action of reversal valve can be made, action after corresponding cold and hot converter wait pressure balance, thus reach the effect reducing noise; And when being converted to heating mode at indoor heat exchanger from refrigeration mode, make the first action of cold and hot converter, when waiting for that indoor heat exchanger pressure to be converted reaches suitable, open corresponding indoor set and heat magnetic valve, last reversal valve completes commutation action, thus reaches the effect reducing noise.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (14)
1. the interior machine patten transformation control method of a heat-reclamation multi-compressors, described heat-reclamation multi-compressors comprises compressor, reversal valve, outdoor heat exchanger, high-pressure air pipe, liquid pipe, low pressure gas pipe, indoor heat exchanger and the cold and hot converter corresponding with described indoor heat exchanger, described high-pressure air pipe is connected with the outlet of described compressor, described low pressure gas pipe is connected with the import of described compressor, described outdoor heat exchanger is connected on described liquid pipe, described indoor heat exchanger is connected with described liquid pipe, described reversal valve is for controlling the break-make of described liquid pipe and described high-pressure air pipe and the break-make with described low pressure gas pipe, described cold and hot converter is for controlling corresponding described indoor heat exchanger and the break-make of described high-pressure air pipe and the break-make with described low pressure gas pipe, it is characterized in that, described interior machine patten transformation control method comprises: when carrying out refrigeration mode and heating mode conversion to described indoor heat exchanger, judge that described reversal valve is the need of commutation, if judged result is yes, then operate corresponding described cold and hot converter and operate indoor heat exchanger described in described reversal valve co-controlling and carry out refrigeration mode and heating mode conversion, if judged result is no, the described cold and hot converter then operating correspondence controls described indoor heat exchanger and carries out refrigeration mode and heating mode conversion.
2. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 1, it is characterized in that, described heat-reclamation multi-compressors has refrigeration and to be dominant operational mode and heat the operational mode that is dominant, judge that described reversal valve comprises the need of commutation: if carrying out before and after refrigeration mode and heating mode conversion to described indoor heat exchanger, described heat-reclamation multi-compressors is in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant respectively, then described judged result is yes; If carrying out before and after refrigeration mode and heating mode conversion to described indoor heat exchanger, described heat-reclamation multi-compressors be not in the freeze pattern that is dominant and the different mode heated in the pattern of being dominant, then described judged result is no.
3. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 1, it is characterized in that, judge that described reversal valve comprises the need of commutation: to carry out the load of the described indoor heat exchanger of refrigeration mode and heating mode conversion as conversion load, if described conversion load is greater than predetermined load, then described judged result is yes, if described conversion load is less than or equal to described predetermined load, then described judged result is no.
4. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 1, it is characterized in that, described compressor is frequency-changeable compressor, before converter cold and hot described in complete operation, make described compressor reduce frequency to run to the load needed, after converter cold and hot described in complete operation, make described compressor return to the load operation of needs.
5. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 4, is characterized in that, before converter cold and hot described in complete operation, makes described compressor frequency be reduced to minimum load operation.
6. the interior machine patten transformation control method of heat-reclamation multi-compressors according to any one of claim 1 to 5, it is characterized in that, the described cold and hot converter of operation correspondence comprises: the described cold and hot converter of operation correspondence makes described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect, described indoor heat exchanger is kept to be communicated with described liquid pipe, until the pressure of described indoor heat exchanger is in predetermined pressure range, then operate corresponding described cold and hot converter make described indoor heat exchanger be in conversion after mode operation.
7. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 6, it is characterized in that, described compressor is frequency-changeable compressor, make before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect at the described cold and hot converter that operation is corresponding, make described compressor reduce frequency to run to the load needed, after mode operation after the described cold and hot converter that operation is corresponding makes described indoor heat exchanger be in conversion, described compressor is made to return to the load operation of needs.
8. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 6, it is characterized in that, when described indoor heat exchanger is converted to heating mode from refrigeration mode, the described cold and hot converter that the mode operation after described cold and hot converter corresponding to operation makes described indoor heat exchanger be in conversion comprises operation corresponding makes described indoor heat exchanger be communicated with described high-pressure air pipe and disconnect with described low pressure gas pipe.
9. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 8, it is characterized in that, if described judged result is yes, first operating corresponding described cold and hot converter makes described indoor heat exchanger be communicated with described high-pressure air pipe and disconnect with described low pressure gas pipe, then operates the commutation of described reversal valve.
10. the interior machine patten transformation control method of heat-reclamation multi-compressors according to claim 9, it is characterized in that, described compressor is frequency-changeable compressor, make before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect at the described cold and hot converter that operation is corresponding, make described compressor reduce frequency to run to the load needed, after the described reversal valve commutation of operation, described compressor is made to return to the load operation of needs.
The interior machine patten transformation control method of 11. heat-reclamation multi-compressors according to claim 6, it is characterized in that, when described indoor heat exchanger is converted to refrigeration mode from heating mode, the described cold and hot converter that the mode operation after described cold and hot converter corresponding to operation makes described indoor heat exchanger be in conversion comprises operation corresponding makes described indoor heat exchanger disconnect with described high-pressure air pipe and be communicated with described low pressure gas pipe.
The interior machine patten transformation control method of 12. heat-reclamation multi-compressors according to claim 11, it is characterized in that, if described judged result is yes, first operate the commutation of described reversal valve, the more described cold and hot converter operating correspondence makes described indoor heat exchanger disconnect with described high-pressure air pipe and be communicated with described low pressure gas pipe.
The interior machine patten transformation control method of 13. heat-reclamation multi-compressors according to claim 12, it is characterized in that, described compressor is frequency-changeable compressor, after the described reversal valve commutation of operation, described cold and hot converter corresponding to operation makes before described indoor heat exchanger and described high-pressure air pipe and described low pressure gas pipe all disconnect, make described compressor reduce frequency to run to the load needed, after the described cold and hot converter that operation is corresponding makes described indoor heat exchanger disconnect with described high-pressure air pipe and is communicated with described low pressure gas pipe, described compressor is made to return to the load operation of needs.
14. 1 kinds of heat-reclamation multi-compressors, described heat-reclamation multi-compressors comprises compressor, reversal valve, outdoor heat exchanger, high-pressure air pipe, liquid pipe, low pressure gas pipe, indoor heat exchanger and the cold and hot converter corresponding with described indoor heat exchanger, described high-pressure air pipe is connected with the outlet of described compressor, described low pressure gas pipe is connected with the import of described compressor, described outdoor heat exchanger is connected on described liquid pipe, described indoor heat exchanger is connected with described liquid pipe, described reversal valve is for controlling the break-make of described liquid pipe and described high-pressure air pipe and the break-make with described low pressure gas pipe, described cold and hot converter is for controlling corresponding described indoor heat exchanger and the break-make of described high-pressure air pipe and the break-make with described low pressure gas pipe, it is characterized in that, described heat-reclamation multi-compressors also comprises mode changeover control device, described mode changeover control device application rights requires that according to any one of 1 to 13, machine patten transformation control method carries out refrigeration mode and heating mode conversion and control to the indoor heat exchanger of described heat-reclamation multi-compressors.
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