CN1755259A - The control method of multi-air-conditioner and refrigeration simultaneously and heating operation - Google Patents
The control method of multi-air-conditioner and refrigeration simultaneously and heating operation Download PDFInfo
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- CN1755259A CN1755259A CN 200510070082 CN200510070082A CN1755259A CN 1755259 A CN1755259 A CN 1755259A CN 200510070082 CN200510070082 CN 200510070082 CN 200510070082 A CN200510070082 A CN 200510070082A CN 1755259 A CN1755259 A CN 1755259A
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- pyrogenicity
- refrigeration
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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
- F25B2313/00—Compression machines, plants or systems with reversible cycle not otherwise provided for
- F25B2313/007—Compression machines, plants or systems with reversible cycle not otherwise provided for three pipes connecting the outdoor side to the indoor side with multiple indoor units
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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
- F25B2313/023—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units
- F25B2313/0231—Compression machines, plants or systems with reversible cycle not otherwise provided for using multiple indoor units with simultaneous cooling and heating
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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
- F25B2600/2501—Bypass 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
- F25B2700/2106—Temperatures of fresh outdoor air
Abstract
The control method of refrigeration and heating operation in the time of a kind of multi-air-conditioner, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit.Described control method comprises the steps: to set respectively refrigeration and pyrogenicity reference area, to determine the principal mode of described multi-air-conditioner according to outdoor temperature; Measure outdoor temperature, to select described refrigeration and pyrogenicity reference area according to outdoor temperature; To the capacity summation of each indoor unit of being set to refrigeration operation or heating operation, to calculate refrigeration and pyrogenicity ratio; And the part of definite and described refrigeration and corresponding refrigeration of pyrogenicity ratio and pyrogenicity reference area, to determine the principal mode of described multi-air-conditioner.
Description
The application requires the interests of the korean patent application No.2004-78564 that 2004.10.2 submits to korean industrial property office, and this paper draws its disclosure and is list of references.
Technical field
The present invention relates to the control method of multi-air-conditioner and refrigeration simultaneously and heating operation, specifically, relate to a kind of can be simultaneously with a part of indoor unit that an outdoor unit links to each other in carry out refrigerating operation and in another part indoor unit, carry out the control method of multi-air-conditioner and the while refrigeration and the heating operation of heating operation.
Background technology
In general, multi-air-conditioner comprises: an outdoor unit; The a plurality of indoor units that are connected in parallel with this outdoor unit; Tributary unit with a plurality of High-pressure air valves and low pressure gas valve is in order to the cold-producing medium flow velocity of control introducing indoor unit; And be connected high-pressure air pipe and low pressure tracheae between outdoor unit and each valve of tributary unit; The open No.1993-099525 of Japanese unexamined patent publication No. has put down in writing a kind of of it and has given an example.
Common multi-air-conditioner can be carried out refrigeration operation, heating operation, main refrigeration operation and main heating operation according to pyrogenicity ratio (or refrigeration ratio).As shown in Figure 1, when the pyrogenicity ratio is 0% (when one or more operating indoor units are worked by the refrigeration pattern), carry out the refrigeration operation; When the pyrogenicity ratio is 100% (when one or more operating indoor units are worked by the pyrogenicity pattern), carry out heating operation; When the pyrogenicity ratio greater than 0% less than 50% the time (capacity of one or more indoor units that are set to refrigeration work greater than the capacity of the indoor unit that is set to pyrogenicity work time), carry out main refrigeration operation; And when the pyrogenicity ratio more than or equal to 50% less than 100% the time (when one or more capacity that are set to the indoor unit of refrigeration work are less than or equal to the capacity of the indoor unit that is set to pyrogenicity work), carry out main heating operation.The meaning of pyrogenicity ratio is to carry out the ratio of capacity and operating indoor unit total capacity of the indoor unit of heating operation.
When multi-air-conditioner is worked by main pyrogenicity pattern or main refrigeration pattern, the one or more High-pressure air valves that link to each other with one or more indoor units that are set to pyrogenicity work are opened, and the one or more low pressure gas valve that link to each other with one or more indoor units that are set to pyrogenicity work are closed.In addition, the one or more High-pressure air valves that link to each other with one or more indoor units that are set to refrigeration work are closed, and the one or more low pressure gas valve that link to each other with one or more indoor units that are set to refrigeration work are opened.The result, the high-temperature gas cold-producing medium is introduced in one or more indoor units that are set to pyrogenicity work, and the cryogenic gaseous cold-producing medium introduced in one or more indoor units that are set to refrigeration work, thereby in a plurality of indoor units, carry out refrigeration operation and heating operation respectively.
Yet, in the conventional multi-air-conditioner that adopts said structure, decide main refrigeration or main heating operation according to the pyrogenicity ratio, therefore, just may set unsuitable principal mode in some cases.
For example, be under 53% the situation, to carry out main heating operation at the pyrogenicity ratio, and irrelevant with outdoor temperature.If outdoor temperature at this moment is higher, the outdoor heat converter temperature of outdoor unit is raise, thereby the pressure of this outdoor heat converter will increase higherly.On the contrary, can make the indoor heat converter increase in temperature of each indoor unit that links to each other with this outdoor heat converter by cross valve, thereby, the freezing capacity of each indoor unit of carrying out the refrigeration operation is reduced.
Along with increasing of outdoor heat converter temperature higher, the blowdown presssure of compressor also increases.Reason must make the compression volume of compressor be reduced for this reason, to protect this compressor.If but the compression volume of compressor were reduced, the freezing capacity reduction that then makes the pyrogenicity efficient of one or more indoor units of carrying out heating operation and carry out one or more indoor units of refrigeration operation.
Be less than or equal to the about 20% of each indoor unit total capacity such as the capacity of the indoor unit that ought one or morely be set to refrigeration operation, and the pyrogenicity ratio is at 40% o'clock, carries out main refrigeration operation.Reduce if carry out the house interior temperature of refrigeration operation, the temperature of one or more indoor heat converters of one or more indoor units of carrying out the refrigeration operation is reduced.As a result, just make one or more indoor heat converter condensations of one or more indoor units of carrying out the refrigeration operation.One or more indoor heat converter condensations for one or more indoor units of preventing to carry out the refrigeration operation must reduce the compression volume of compressor, and the pyrogenicity of each indoor unit and freezing capacity are reduced.In these cases, the capacity of outdoor heat converter and the one or more indoor units that are set heating operation is greater than the capacity that is set one or more indoor units of carrying out the refrigeration operation.As a result, be difficult to form high pressure, thereby the pyrogenicity efficient of one or more indoor units of carrying out heating operation is reduced at the compressor outlet side.
Summary of the invention
So one aspect of the present invention is the control method that a kind of multi-air-conditioner and refrigeration simultaneously and heating operation will be provided, and when carrying out refrigeration simultaneously and heating operation, can improve freezing capacity and can also improve pyrogenicity efficient.
According to an aspect, the control method of refrigeration and heating operation when the invention provides a kind of multi-air-conditioner, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit, wherein, described control method comprises the steps: to set respectively refrigeration and pyrogenicity reference area, to determine the principal mode of described multi-air-conditioner according to outdoor temperature; Measure outdoor temperature, to select described refrigeration and pyrogenicity reference area according to outdoor temperature; To the capacity summation of each indoor unit of being set to refrigeration operation or heating operation, to calculate refrigeration and pyrogenicity ratio; And the part of definite and described refrigeration and corresponding refrigeration of pyrogenicity ratio and pyrogenicity reference area, to determine the principal mode of described multi-air-conditioner.
A part will be addressed others of the present invention and/or advantage in this subsequent specification, and a part will more for obvious, perhaps can be understood by putting into practice the present invention from these explanations.
Description of drawings
From below in conjunction with the description of accompanying drawing, these and/or others of the present invention and advantage will be become more for clear and be more readily understood, wherein to embodiment:
Fig. 1 is the principal mode schematic diagram of the common multi-air-conditioner of expression when carrying out refrigeration and heating operation simultaneously;
Fig. 2 is multi-air-conditioner refrigerant circuits figure of the present invention;
Fig. 3 is the block diagram of expression multi-air-conditioner structure shown in Figure 2;
Fig. 4 is the principal mode schematic diagram of expression first embodiment of the invention multi-air-conditioner when carrying out refrigeration and heating operation simultaneously;
The flow chart of refrigeration and heating operation when Fig. 5 is explanation first embodiment of the invention multi-air-conditioner;
Fig. 6 is the principal mode schematic diagram of expression second embodiment of the invention multi-air-conditioner when carrying out refrigeration and heating operation simultaneously;
Fig. 7 is the flow chart of refrigeration simultaneously of explanation second embodiment of the invention multi-air-conditioner and heating operation.
The specific embodiment
Below preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.The following examples are used for by the present invention of reference description of drawings.
Fig. 2 is a kind of multi-air-conditioner refrigerant circuits of the present invention figure.As shown in Figure 2, described multi-air-conditioner comprises an outdoor unit 10; First to the interior unit 20a of fourth ventricle, 20b, and 20c and 20d, they and outdoor unit 10 are connected in parallel; And refrigeration pattern/pyrogenicity mode switch element 30, in order between refrigeration pattern and pyrogenicity pattern, to switch each indoor unit 20a, 20b, the mode of operation of 20c and 20d.
Described outdoor unit 10 comprises: cross valve 12, in order to the flow direction of control from the cold-producing medium of compressor 11 dischargings; Outdoor heat converter 13 is carried out heat exchange with the outdoor air of introducing outdoor unit 10; Outdoor motor control valve 14 is in order to the swell refrigeration agent; And receiving vessel 15 and reservoir 16, with so that gaseous refrigerant and liquid refrigerant be separated from each other.Described indoor unit 20a, 20b, 20c links to each other with described outdoor unit 10 through high-pressure air pipe 17, low pressure tracheae 18 and high-pressure liquid tube 19 with 20d, by these pipes, cold-producing medium is offered each indoor unit 20a, 20b, 20c and 20d.
Low pressure tracheae 18 is connected to the input of outdoor unit 10 compressors 11, and outdoor motor control valve 14 links to each other with outdoor heat converter 13 series connection, and high-pressure liquid tube 19 links to each other with outdoor motor control valve 14 through receiving vessel 15.Outdoor motor control valve 14 is connected in parallel with the by-passing valve 41a and the check valve 41b that are used as the flow control valve door, so that at the refrigeration duration of work, the liquid refrigerant that makes outdoor heat converter 13 dischargings is by bypath valve 41a and check valve 41b, and at the pyrogenicity duration of work, 41a is closed along with bypath valve, and makes cold-producing medium pass through outdoor motor control valve 14.
Between cross valve 12 and high-pressure liquid tube 19, high pressure arm 42 is set, this is the branch road of telling from high-pressure air pipe 17.High pressure arm magnetic valve 43a as the on/off valve is housed on high pressure arm 42, and check (non-return) valve 43b, reflux from high-pressure air pipe 17 to prevent cold-producing medium.Between cross valve 12 and high-pressure air pipe 17, another check (non-return) valve 44 is housed, to prevent back flow of refrigerant.On high-pressure liquid tube 19, refrigeration pattern/pyrogenicity mode switch element pipe magnetic valve 24a and 24b is housed, flow to the flow velocity of the cold-producing medium of high-pressure liquid tube 19 in order to control from refrigeration pattern/pyrogenicity mode switch element 30.
First to the interior unit 20a of fourth ventricle, 20b, and 20c and 20d comprise: first to the interior heat exchanger 21a of fourth ventricle, 21b, 21c and 21d; First in the fourth ventricle motor handle valve 22a, 22b, 22c and 22d, they with first to the interior heat exchanger 21a of fourth ventricle, 21b, 21c and 21d are connected in series; And first to the 4th temperature sensor 37a, 37b, 37c and 37d, they are installed in each indoor unit 20a respectively, and 20b is between 20c and 20d and the refrigeration pattern/pyrogenicity mode switch element 30.
Refrigeration pattern/pyrogenicity mode switch element 30 comprises: be installed in first to the 4th gases at high pressure branched pipe 33a, and 33b, first to the 4th pyrogenicity valve 31a on 33c and the 33d, 31b, 31c and 31d, they branch out from high-pressure air pipe 17 respectively; And be installed in first to the 4th low-pressure gas branched pipe 34a, and 34b, first to the 4th refrigeration valve 32a on 34c and the 34d, 32b, 32c and 32d, they branch out from low pressure tracheae 18 respectively.First group of pyrogenicity links to each other with the first refrigerant pipe 35a with the refrigeration valve, is connected to the first indoor unit 20a.Equally, second to the 4th group of pyrogenicity and refrigeration valve respectively with second to the 4th refrigerant pipe 35b, 35c links to each other with 35d.
When the multi-air-conditioner with said structure was carried out main refrigeration operation, the first outlet 12a of cross valve 12 was communicated with the second outlet 12b of this cross valve 12, and the 3rd of cross valve 12 exports 12c and exports 12d with the 4th of this cross valve 12 and be communicated with.Meanwhile, the high pressure arm magnetic valve 43a of high pressure arm 42 is opened.In addition, one or more pyrogenicity valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are closed, and one or more refrigeration valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are opened.Otherwise, one or more pyrogenicity valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are opened, and one or more refrigeration valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are closed.
So, by outdoor heat converter 13 some cold-producing mediums of discharging from compressor 11 are concentrated, by high-pressure liquid tube 19, offer each indoor unit of carrying out the refrigeration operation, and then, make house interior refrigeration by each indoor heat converter evaporation.By the cold-producing medium of each indoor heat converter,,, flow to the inlet of compressor 11 by each the refrigeration valve and the low pressure tracheae 18 of refrigeration pattern/pyrogenicity mode switch element 30 as low-pressure gaseous refrigerant through heat exchange.
On the other hand, discharge and pass through some cold-producing mediums of cross valve 12 from compressor 11, each pyrogenicity valve by high pressure arm 42, high-pressure air pipe 17 and refrigeration pattern/pyrogenicity mode switch element 30, be provided for each indoor unit of carrying out heating operation, and then concentrated by each indoor heat converter, make house interior pyrogenicity.The cold-producing medium by one or more indoor heat converters is provided for high-pressure liquid tube 19, here combine with the cold-producing medium that offers one or more indoor units of carrying out the refrigeration operation, make house interior refrigeration, and then flow to compressor 11 by low pressure tracheae 18.
When described multi-air-conditioner was carried out main heating operation, the first outlet 12a of cross valve 12 was communicated with the 3rd outlet 12c of this cross valve 12, and the second outlet 12b of cross valve 12 is communicated with the 4th outlet 12d of this cross valve 12.Meanwhile, the high pressure arm magnetic valve 43a of high pressure arm 42 is closed.In addition, one or more pyrogenicity valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out heating operation are opened, and one or more refrigeration valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are closed.Otherwise, one or more pyrogenicity valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are closed, and one or more refrigeration valves of the refrigeration pattern/pyrogenicity mode switch element 30 that links to each other with one or more indoor units of carrying out the refrigeration operation are opened.
So the cold-producing medium of discharging from compressor 11 is provided for one or more indoor heat converters of each indoor unit of carrying out heating operation by high-pressure air pipe 17, is concentrated by each indoor heat converter, makes house interior pyrogenicity.And then be given to high-pressure liquid tube 19 by one or more expansion valves.Some cold-producing mediums that are given to high-pressure liquid tube 19 are provided for one or more indoor units of carrying out the refrigeration operation, by each indoor heat converter evaporation, make house interior refrigeration; Flow to compressor 11 by low pressure tracheae 18 and reservoir 16 then.
In addition, all the other cold-producing mediums that are given to high-pressure liquid tube 19 return outdoor unit 10.Specifically, this cold-producing medium is handled valve 14 by receiving vessel 15 and outdoor motor and is provided for outdoor heat converter 13, evaporated by outdoor heat converter 13, third and fourth outlet 12c, the 12d and the reservoir 16 by cross valve 12 flows to compressor 11 then.
As shown in Figure 3, described outdoor unit 10 also comprises: outdoor unit microprocessor 23, in order to each parts of control outdoor unit 10; And outdoor temperature sensor 25, in order to the temperature of sensing chamber's outer air.
Described first in the fourth ventricle unit 20a, 20b, 20c and 20d also comprise first in the fourth ventricle unit microprocessor 36a, 36b, 36c and 36d control each parts of each indoor unit respectively.
Described refrigeration pattern/pyrogenicity mode switch element 30 also comprises refrigeration pattern/pyrogenicity mode switch element microprocessor 38, in order to control first to the 4th refrigeration valve 32a, 32b, 32c and 32d and first to the 4th pyrogenicity valve 31a, 31b, 31c and the 31d.
Following refrigeration and pyrogenicity control method when describing the first embodiment of the invention multi-air-conditioner with reference to Figure 4 and 5.
At first, measure outdoor temperature (50), when determining main operating pattern, to consider outdoor temperature and pyrogenicity ratio by outdoor temperature sensor 25; Obtain being set to the capacity sum of each indoor unit of refrigeration operation and the capacity sum that is set to each indoor unit of heating operation then, to calculate pyrogenicity ratio (52).
Then, determine whether outdoor temperature is greater than or equal to first fiducial temperature (54).Preferably described first fiducial temperature is set for minimum outdoor temperature, outdoor heat converter 13 at this moment raises under main pyrogenicity pattern, in order to reduce the refrigeration and the pyrogenicity efficient of whole system.Though can change described first fiducial temperature according to the difference of each system, shown in present embodiment in, have as shown in Figure 4, first fiducial temperature is set at 15 ℃.
If outdoor temperature is lower than first fiducial temperature, determine then whether the pyrogenicity ratio is less than or equal to second a reference value (64).If the pyrogenicity ratio is less than or equal to second a reference value, then system carries out main refrigeration pattern work (66); If the pyrogenicity ratio is greater than second a reference value, then system carries out main pyrogenicity pattern work (68).Though can change described second a reference value according to the difference of each system, preferably have as shown in Figure 4, described second a reference value is set at 50%.
If outdoor temperature is greater than or equal to first fiducial temperature when operating procedure 54, determine then whether the pyrogenicity ratio is less than or equal to first reference value (56).Preferably first reference value is set to such an extent that be higher than described second a reference value.As shown in Figure 4, described first reference value is 55%.If the pyrogenicity ratio is less than or equal to first reference value, then system carries out main refrigeration pattern work (58); If the pyrogenicity ratio is greater than first reference value, then system carries out main pyrogenicity pattern work (62).
When outdoor temperature is greater than or equal to first fiducial temperature as described above, set pyrogenicity ratio a reference value for high value as critical factor, thereby, system carries out the work of main refrigeration pattern, under such condition, system of the prior art carries out main pyrogenicity pattern work (is under the 50-55% situation at pyrogenicity ratio shown in Figure 4).Therefore, when outdoor temperature is high, carry out the work of main pyrogenicity pattern, reduce with refrigeration and the pyrogenicity efficient that prevents described multi-air-conditioner.
If when system carries out work after the decision principal mode, the capacity of one or more indoor units of the capacity of one or more indoor units of implementation heating operation or implementation refrigeration operation changes, and then operating process 50 is carried out and reseted principal mode (60).
Though can distinguish outdoor temperature so that set a plurality of a reference values according to the outdoor temperature of being distinguished, shown in present embodiment in, according to outdoor temperature with two different a reference values decision principal mode.In this case, preferably pre-determine each a reference value and being stored in the microprocessor.
Following refrigeration and heating operation control method when describing the multi-air-conditioner of second preferred embodiment of the invention with reference to Fig. 6 and 7.
At first, by outdoor temperature sensor 25 measurement outdoor temperatures and by first to the 4th temperature sensor 37a, 37b, 37c and 37d measurement wait to set each indoor unit 20a of principal mode, 20b, the indoor temperature of 20c and 20d (70); Obtain being set to the capacity sum of each indoor unit of refrigeration operation and the capacity sum that is set to each indoor unit of heating operation then, to calculate pyrogenicity ratio (72).
Then, determine whether needed refrigeration capacity is less than or equal to 20% (74) of each indoor unit total capacity.Needed refrigeration capacity is the summation that is set to each indoor unit capacity of refrigeration operation.If needed refrigeration capacity greater than 20% of each indoor unit total capacity, is then carried out the operating process 54 of Fig. 5.On the other hand, if needed refrigeration capacity is less than or equal to 20% of each indoor unit total capacity, then determines to install one or more house interior temperature that are set to the indoor unit of refrigeration operation and whether be less than or equal to second fiducial temperature (76).Described second fiducial temperature is minimum temperature, and the heat exchanger 13 of at this moment carrying out each indoor unit of refrigeration operation is condensed under main pyrogenicity pattern.
Be higher than second fiducial temperature if one or more those house interior temperature that are set to the indoor unit of refrigeration operation are installed, then carry out the operating process 54 of Fig. 5.On the other hand, be less than or equal to second fiducial temperature, determine that then whether the pyrogenicity ratio is more than or equal to the 3rd a reference value (78) if one or more those house interior temperature that are set to the indoor unit of refrigeration operation are installed.As shown in Figure 6, this 3rd a reference value is set at and is lower than in 50% the pyrogenicity ratio.In an illustrated embodiment, described second a reference value is 30%.Therefore, carry out the zone (30-50%) of main refrigeration pattern operation in the prior art, do not carry out main refrigeration pattern but the operation of main pyrogenicity pattern, to prevent because control avoids each indoor unit to be descended by the performance of system due to condensing.
Carry out main pyrogenicity pattern operation, then commence operation step 70 if carry out the capacity of one or more indoor units of heating operation or refrigeration operation to change.Though can set principal mode according to conventional method shown in Figure 1 (promptly only according to the pyrogenicity ratio), when not satisfying the condition of operating procedure 74,76 and 78, then carry out the operating procedure 54 of Fig. 5.
Though consider the make decision principal mode of described multi-air-conditioner of the situation of refrigeration ratio and other condition at the same time, but in first and second embodiment, the make decision principal mode of described multi-air-conditioner of the situation of considering pyrogenicity ratio and other condition at the same time.
As obviously visible from top description institute, the condition of considering outdoor temperature and pyrogenicity ratio (or refrigeration ratio) at the same time when refrigeration and the pyrogenicity described principal mode of making decision.Therefore, the present invention has the effect that prevents to set irrelevantly in specific pyrogenicity ratio zone principal mode, and therefore avoids systematic function to become bad.
In addition, capacity at one or more indoor units of carrying out the refrigeration operation is less than or equal to each indoor base ratio that equals total capacity, and when the house interior temperature of carrying out the refrigeration operation is less than or equal to fiducial temperature, set less pyrogenicity ratio a reference value, to determine described principal mode.Therefore, the present invention has the effect that prevents to set irrelevantly in specific pyrogenicity ratio zone principal mode, and therefore avoids systematic function to become bad.
Though represented and described several embodiments of the present invention, but the people who is familiar with this area will be understood that, can change these embodiments, and unlikely disengaging principle of the present invention and marrow, its scope is limited in appended each claim and their equivalents.
Claims (11)
1. the control method of a refrigeration and heating operation multi-air-conditioner time, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit, wherein, described control method comprises the steps:
Set refrigeration and pyrogenicity reference area respectively, to determine the principal mode of described multi-air-conditioner according to outdoor temperature;
Measure outdoor temperature, to select described refrigeration and pyrogenicity reference area according to outdoor temperature;
To the capacity summation of each indoor unit of being set to refrigeration operation or heating operation, to calculate refrigeration and pyrogenicity ratio; And
Determine the part with described refrigeration and corresponding refrigeration of pyrogenicity ratio and pyrogenicity reference area, to determine the principal mode of described multi-air-conditioner.
2. the method for claim 1, wherein, described principal mode is main refrigeration pattern or main pyrogenicity pattern, and the decision of described main refrigeration pattern or main pyrogenicity pattern is become the relevant principal mode of part with refrigeration and corresponding refrigeration of pyrogenicity ratio and pyrogenicity reference area.
3. the control method of a refrigeration and heating operation multi-air-conditioner time, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit, wherein, described control method comprises the steps:
Measure outdoor temperature;
Obtain being set to the capacity sum of each indoor unit of refrigeration operation and the capacity sum that is set to each indoor unit of heating operation, to calculate the pyrogenicity ratio;
The pyrogenicity ratio a reference value that compares the pyrogenicity ratio and set according to outdoor temperature; And
During greater than pyrogenicity ratio a reference value, described multi-air-conditioner is carried out main pyrogenicity pattern operation at the pyrogenicity ratio, and when the pyrogenicity ratio was not more than pyrogenicity ratio a reference value, described multi-air-conditioner was carried out main refrigeration pattern operation.
4. method as claimed in claim 3, wherein, with described pyrogenicity ratio a reference value set with the outdoor temperature direct ratio.
5. method as claimed in claim 4 wherein, when outdoor temperature is greater than or equal to fiducial temperature, is set described pyrogenicity ratio a reference value for first reference value; When outdoor temperature is lower than fiducial temperature, set described pyrogenicity ratio a reference value for second a reference value littler than first reference value.
6. the control method of a refrigeration and heating operation multi-air-conditioner time, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit, wherein, described control method comprises the steps:
Measure outdoor temperature;
Obtain being set to the capacity sum of each indoor unit of refrigeration operation and the capacity sum that is set to each indoor unit of heating operation, to calculate the pyrogenicity ratio;
When outdoor temperature is greater than or equal to fiducial temperature, compare pyrogenicity ratio and first reference value, to determine the principal mode of described multi-air-conditioner; When outdoor temperature is lower than fiducial temperature, compare pyrogenicity ratio and second a reference value littler, to determine the principal mode of described multi-air-conditioner than first reference value.
7. the control method of a refrigeration and heating operation multi-air-conditioner time, described multi-air-conditioner comprises a plurality of indoor units that are connected in parallel with an outdoor unit, wherein, described control method comprises the steps:
The temperature in each space of a plurality of indoor units is equipped with in measurement;
Obtain being set to the capacity sum of each indoor unit of refrigeration operation and the capacity sum that is set to each indoor unit of heating operation;
If the capacity that is set to each indoor unit of refrigeration operation is less than or equal to the predetermined percentage of each indoor unit total capacity, and the temperature that each space of one or more indoor units that are set to refrigeration operation is housed is less than or equal to fiducial temperature, then compare pyrogenicity ratio and a pyrogenicity ratio a reference value, this pyrogenicity ratio a reference value is set less than another pyrogenicity ratio a reference value, described another pyrogenicity ratio a reference value be at each the indoor unit capacity that is set to refrigeration operation greater than each indoor unit total capacity predetermined percentage, and the temperature that each space of the one or more indoor units that are set to the refrigeration operation is housed sets when being higher than fiducial temperature; And
During greater than described pyrogenicity ratio a reference value, described multi-air-conditioner is carried out main pyrogenicity pattern operation at the pyrogenicity ratio.
8. method as claimed in claim 7, wherein, described fiducial temperature is a maximum temperature, under this temperature, the heat exchanger that is set to each indoor unit of refrigeration operation is condensed.
9. method as claimed in claim 7, wherein, described predetermined percentage is 10-30%.
10. multi-air-conditioner, it comprises:
The a plurality of indoor units that are connected in parallel with an outdoor unit;
Outdoor temperature sensor is in order to measure outdoor temperature; And
Control module is carried out control and is handled, and when the pyrogenicity ratio a reference value that the pyrogenicity ratio sets greater than an outdoor temperature that records according to outdoor temperature sensor, handles described multi-air-conditioner with the work of main pyrogenicity pattern; And when the pyrogenicity ratio is not more than described pyrogenicity ratio a reference value, with main refrigeration pattern work.
11. a multi-air-conditioner, it comprises:
The a plurality of indoor units that are connected in parallel with an outdoor unit;
A plurality of outdoor temperature sensor are in order to measure the temperature in each space that each indoor unit is installed; And
Control module, carrying out control handles, the predetermined percentage that is less than or equal to each indoor unit total capacity in order to capacity at each indoor unit that is set to the refrigeration operation, and when the temperature that each space of one or more indoor units that are set to refrigeration operation is housed is less than or equal to fiducial temperature, relatively pyrogenicity ratio and a pyrogenicity ratio a reference value; This pyrogenicity ratio a reference value is set less than another pyrogenicity ratio a reference value, described another pyrogenicity ratio a reference value be at each the indoor unit capacity that is set to refrigeration operation greater than each indoor unit total capacity predetermined percentage, and the temperature that each space of the one or more indoor units that are set to the refrigeration operation is housed sets when being higher than fiducial temperature; And determine main operating pattern according to this comparative result.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR200478564 | 2004-10-02 | ||
| KR1020040078564A KR20060029564A (en) | 2004-10-02 | 2004-10-02 | A multi air conditioner system and simultaneously cooling and heating driving method of the multi air conditioner system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1755259A true CN1755259A (en) | 2006-04-05 |
| CN100510562C CN100510562C (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100700828A Expired - Fee Related CN100510562C (en) | 2004-10-02 | 2005-05-09 | Multi air conditioner system and simultaneous cooling and heating operation controlling method thereof |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1643195B1 (en) |
| KR (1) | KR20060029564A (en) |
| CN (1) | CN100510562C (en) |
| DE (1) | DE602005017106D1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642521A (en) * | 2016-09-21 | 2017-05-10 | 广东美的暖通设备有限公司 | Control method of multi-split air-conditioning system |
| CN109373498A (en) * | 2018-10-17 | 2019-02-22 | 珠海格力电器股份有限公司 | Demand model control method, device, system and the air-conditioning of temperature control equipment |
| CN109708253A (en) * | 2018-12-29 | 2019-05-03 | 广东美的暖通设备有限公司 | The control method and air-conditioning system of air-conditioning system |
| CN114508837A (en) * | 2021-12-24 | 2022-05-17 | 青岛海尔空调电子有限公司 | Control method for three-pipe type multi-split air conditioning unit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100854829B1 (en) * | 2007-02-13 | 2008-08-27 | 엘지전자 주식회사 | Air conditioning system and control method for the same |
| KR100791930B1 (en) * | 2007-04-06 | 2008-01-04 | 삼성전자주식회사 | Outdoor unit for multi-type air conditioner |
| JP5383899B2 (en) * | 2010-02-17 | 2014-01-08 | 三菱電機株式会社 | Air conditioning system |
| CN107560092B (en) | 2017-09-25 | 2019-10-22 | 珠海格力电器股份有限公司 | Multi-connection operation condition control method, system and heat pump multi-connected machine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2974179B2 (en) | 1991-10-09 | 1999-11-08 | 松下冷機株式会社 | Multi-room air conditioner |
| KR100437805B1 (en) | 2002-06-12 | 2004-06-30 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time and method for controlling the same |
| KR100447203B1 (en) * | 2002-08-22 | 2004-09-04 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time and method for controlling the same |
| KR100447204B1 (en) * | 2002-08-22 | 2004-09-04 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time and method for controlling the same |
| KR20040064452A (en) | 2003-01-13 | 2004-07-19 | 엘지전자 주식회사 | Multi-type air conditioner for cooling/heating the same time |
-
2004
- 2004-10-02 KR KR1020040078564A patent/KR20060029564A/en not_active Application Discontinuation
-
2005
- 2005-04-28 DE DE200560017106 patent/DE602005017106D1/en active Active
- 2005-04-28 EP EP20050103533 patent/EP1643195B1/en active Active
- 2005-05-09 CN CNB2005100700828A patent/CN100510562C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642521A (en) * | 2016-09-21 | 2017-05-10 | 广东美的暖通设备有限公司 | Control method of multi-split air-conditioning system |
| CN109373498A (en) * | 2018-10-17 | 2019-02-22 | 珠海格力电器股份有限公司 | Demand model control method, device, system and the air-conditioning of temperature control equipment |
| CN109708253A (en) * | 2018-12-29 | 2019-05-03 | 广东美的暖通设备有限公司 | The control method and air-conditioning system of air-conditioning system |
| CN114508837A (en) * | 2021-12-24 | 2022-05-17 | 青岛海尔空调电子有限公司 | Control method for three-pipe type multi-split air conditioning unit |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1643195A3 (en) | 2006-06-07 |
| EP1643195A2 (en) | 2006-04-05 |
| DE602005017106D1 (en) | 2009-11-26 |
| EP1643195B1 (en) | 2009-10-14 |
| KR20060029564A (en) | 2006-04-06 |
| CN100510562C (en) | 2009-07-08 |
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