CN203823994U - Air-conditioning system - Google Patents
Air-conditioning system Download PDFInfo
- Publication number
- CN203823994U CN203823994U CN201320725740.2U CN201320725740U CN203823994U CN 203823994 U CN203823994 U CN 203823994U CN 201320725740 U CN201320725740 U CN 201320725740U CN 203823994 U CN203823994 U CN 203823994U
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- air
- conditioning system
- compressor
- cylinder
- temperature
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- Expired - Lifetime
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 20
- 230000007613 environmental effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012886 linear function Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
Abstract
The utility model provides an air-conditioning system. The air-conditioning system comprises a double-cylinder variable capacitance compressor, which is provided with an upper cylinder air suction port, a lower cylinder air suction port and an exhaust port. The air-conditioning system comprises an electromagnetic valve, one end of the electromagnetic valve is connected with the exhaust port of the double-cylinder variable capacitance compressor, and the other end of the electromagnetic valve is connected with a check valve and the lower cylinder air suction port of the double-cylinder variable capacitance compressor; one end of the check valve is connected with the electromagnetic valve, and the other end of the check valve is connected to the inner cavity of a gas-liquid separator. The air-conditioning system expands the cooling/heating thermal adjustment range and improves the energy efficiency and the comfort level.
Description
Technical field
The utility model relates to field of air conditioning, in particular to a kind of air-conditioning system.
Background technology
The following situation of existing air-conditioner ubiquity: due to the difference of the indoor set operation quantity of indoor and outdoor temperature or multi-connected machine, cause the same set of air-conditioning system may be in different operating load conditions under different situations.And just indoor temperature can be stabilized in when only having the refrigerating/heating amount of air-conditioning output and indoor environment thermic load to reach balance on the target temperature that user sets.Therefore to regulate according to environmental heat load be the necessary condition of stablizing indoor temperature to the refrigerating/heating amount of air-conditioning system.
For above situation, the common practice of existing air-conditioner is:
(1), fixed machine set compressor frequently runs to when indoor temperature reaches goal-setting temperature and shuts down, in the time that indoor temperature exceeds design temperature certain limit, start shooting again.
(2), frequency conversion unit compressor in the time that indoor environment temperature approaches goal-setting temperature carries out frequency reducing control, finally make air-conditioner refrigerating/heating amount and environmental heat load reach balance by a series of frequency reducing, raising frequency adjustment, environment temperature is controlled in goal-setting temperature.
The weak point that prior art exists:
(1), fixed unit frequently can cause near indoor temperature fluctuation up and down target temperature near startup-shutdown operation design temperature point; cannot stablize and be controlled in the scope that distance objective temperature is less; comfortableness is poor, and the start-stop of compressor can make power consumption increase, overall efficiency decline.
(2) although, frequency conversion unit by rotating speed adjustable environment temperature can be controlled in most cases distance objective temperature more among a small circle in; but in the time that environmental heat load is very little; while there will be compressor to mix down to compressor design minimum frequency, the refrigerating/heating amount of air-conditioning system is still greater than the situation of environmental heat load; just only take this time and the fixed the same scheme of machine frequently; carrying out the control of compressor startup-shutdown makes environment temperature reach design temperature; and once compressor carries out start-stop control; efficiency can decline, and comfortableness can variation.
(3) all there is its optimum speed scope in frequency-changeable compressor,, when compressor frequency too low and when exceeding its best and turn the range of speeds electric efficiency can decline, therefore in the time that environmental heat load is very little, in order to ensure air-conditioning system refrigerating/heating amount and environmental heat load balance, compressor frequency may be much smaller than its optimum operation scope, electric efficiency is declined, cause efficiency to decline.
Utility model content
The utility model aims to provide a kind of air-conditioning system, the start-stop operation of carrying out compressor to solve air-conditioning system of the prior art increases power consumption, entirety efficiency declines, frequency-conversion air-conditioning system is in the time that environmental heat load is very little, compressor frequency may be much smaller than its optimum operation scope, electric efficiency is declined, the technical problem that causes efficiency to decline.
The utility model provides a kind of air-conditioning system, comprises double-cylinder variable-capacity compressor, and double-cylinder variable-capacity compressor has upper cylinder air entry, lower cylinder air entry and exhaust outlet; Air-conditioning system also comprises magnetic valve, magnetic valve one end connects the exhaust outlet of double-cylinder variable-capacity compressor, the other end connects respectively the lower cylinder air entry of check valve and double-cylinder variable-capacity compressor, one end connected electromagnetic valve of check valve, the inner chamber of other end access gas-liquid separator.
Further, air-conditioning system has state and the single cylinder running status of twin-tub operation.
Further, air-conditioning system has electromagnetic valve pipeline closes, the twin-tub running status that lower cylinder air entry and gas-liquid separator are communicated with.
Further, air-conditioning system has electromagnetic valve pipeline and is communicated with, the single cylinder running status that exhaust outlet and lower cylinder air entry are communicated with.
Further, also comprise, capillary, in parallel with check valve.
Further, also comprise, be arranged on the temperature-sensitive bag at air inlet place of indoor set or the temperature-sensitive bag of the temperature-sensitive bag of indoor set manual operator or remote controller, for detection of indoor environment temperature T
ring.
Further, also comprise control module; Control module control compressor operating frequency is F, and with the time cycle circulation of presetting, circulation records indoor environment temperature T
ringand obtain user arrange temperature objectives T
if; Control system has that to make the running frequency of compressor be F=A (T
ring-T
ifthe first state of)+B+E and to make the running frequency of compressor be Fn=Fn-1[D+C (Tn-Tn-1)] the second state of/D, wherein, A, B, E are predetermined constant, and F is compressor operating frequency, and Fn represents the compressor operating frequency of n sense cycle; Fn-1 represents n-1 sense cycle compressor operating frequency, and C, D are predetermined constant, and Tn represents the indoor environment temperature detecting, T the n time
n-1represent the indoor environment temperature detecting for the n-1 time.
Application the technical solution of the utility model, compressor has magnetic valve for controlling twin-tub running status and single cylinder running status, thereby expands cooling system/heating capacity adjustable range, improves efficiency and comfortableness.
Brief description of the drawings
The Figure of description that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 shows the control flow chart of the control method of the air-conditioning system of an embodiment of the utility model;
Fig. 2 shows the structural representation of the air-conditioning system of an embodiment of the utility model;
Fig. 3 shows the structural representation of the high pressure two-port valve adopting in air-conditioning system of the present utility model;
Fig. 4 shows the structural representation of the high pressure two-port valve adopting in air-conditioning system of the present utility model;
Fig. 5 shows the structural representation of the low pressure two-port valve adopting in air-conditioning system of the present utility model; And
Fig. 6 shows the structural representation of the low pressure two-port valve adopting in air-conditioning system of the present utility model.
Detailed description of the invention
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the utility model in detail.
The utility model is utilization expands cooling system/heating capacity in conjunction with transfiguration technology adjustable range with the twin-tub of vapour liquid separator or frequency-changeable compressor more than twin-tub, and ensure within the specific limits compressor electric motor efficiency, thereby improve overall efficiency and comfortableness.
Air-conditioning system of the present utility model and control method arrange as follows:
1,, at indoor set air inlet set environment temperature-sensitive bag, every t1 that crosses detects indoor environment temperature T second
ring, wherein Tn represents the indoor environment temperature detecting for the n time, T
n-1represent the indoor environment temperature detecting for the n-1 time.
Give an example as embodiment herein, temperature-sensitive bag is set at the air inlet place of indoor set and detects real-time indoor actual environment temperature.As other embodiments, also can be the indoor actual environment temperature that indoor set manual operator temperature-sensitive bag detects, also can be the indoor actual environment temperature that remote controller temperature-sensitive is wrapped detection, no matter be arranged on which place temperature-sensitive bag, as long as actual indoor environment temperature being detected in real time.
2, detect in real time user and set the indoor environment temperature T that refrigerating/heating need to reach
if(target temperature that manual operator or remote controller are set, namely user needs room temperature control at how many degree).
3, set compressor minimum operation frequency Z and maximum running frequency Y, this is the constant that can arrange respectively according to the difference of air-conditioning system, for example 1≤Z≤40,70≤Y≤150.
4, the utility model is twin-tub, and F is compressor twin-tub running frequency, and f is compressor single cylinder running frequency, Z≤F≤Y conventionally, Z≤f≤G (Z+H).
5, some constant relevant to air conditioner set constructor or variable: t1, t2, A, B, C, D, E, G, H, T are set.(these values can arrange respectively different constants or variate-value according to the difference of air-conditioning system).
For example, 40≤t1≤1000,40≤t2≤1000 ,-100≤A≤100,1≤B≤100 ,-10000≤C≤10000,1≤D≤10000,1≤E≤50,1≤G≤5,, 1≤H≤10,1≤T≤5.
Wherein under refrigeration mode A, C be on the occasion of, under heating mode, A, C are negative value.
Particularly, wherein t1 and t2 are Preset Times, determine different time values according to the difference of air-conditioning system, can be determined by experiment; A, B, C, D, E, G, H are default constants, establish different values according to the difference of compressor and air-conditioning system, specifically can be determined by experiment; T is default actual environment temperature and the difference desired value of targeted environment temperature, this difference desired value is for determining whether indoor environment temperature reaches the environment temperature of user's request, this numerical value is as the foundation of compressor frequency control mode switching, and G (Z+H) is the peak frequency of compressor single cylinder operation.
Shown in Figure 1, control method of the present utility model is as follows:
Unit start operation, magnetic valve power down is switched to compressor twin-tub running status, running frequency F=A (T
ring-T
if)+B, continuous service t1 detected after second | T
ring-T
if|;
(1) if | T
ring-T
if|≤T, Fn=Fn
-1[D+C (Tn-Tn
-1)]/D, wherein Fn represents the compressor operating frequency of n sense cycle; Fn
-1represent n-1 sense cycle compressor operating frequency;
(2) if | T
ring-T
if| >T, F=A (T
ring-T
if)+B+E, detects after the t2 time excessively again | T
ring-T
if| repeating above judgement above is compressor twin-tub running frequency computational methods,
(3), when compressor is in the time that twin-tub moves, when calculate F<Z time, magnetic valve powers on, switch to the running of compressor single cylinder, and compressor frequency f=GF when single cylinder running, wherein F still calculates according to the method for above (1), (2);
(4), when compressor is in the time that single cylinder turns round, when calculate F>Z+H time, magnetic valve power down, switches to compressor twin-tub running, compressor operating frequency is moved according to F calculated value.
That is to say, the utility model is constantly monitored indoor environment temperature and design temperature in real time, in the time that the difference of environment temperature and design temperature is less than preset value, and the running frequency of the relatively last sense cycle of compressor, stably frequency reducing automatically; In the time being greater than preset value, compressor moves with a certain linear function frequency reducing.On the other hand, when system discovery running frequency is during lower than compressor minimum operation frequency, automatically twin-tub running status is switched to single cylinder running status, because compressor adopts single cylinder operation after transfiguration, its refrigerating/heating amount can adapt to very little thermic load, to avoid occurring start-stop control and underfrequency.When running frequency is during higher than certain preset value, then switch to twin-tub running status.
Shown in Figure 2, air-conditioning system of the present utility model, comprises double-cylinder variable-capacity compressor 30, and double-cylinder variable-capacity compressor 30 is drawn three tunnels: upper cylinder air entry, lower cylinder air entry and exhaust outlet.Double-cylinder variable-capacity compressor 30, the first heat exchanger 10, orifice union 40 and the second heat exchanger 20 connect into loop, also comprise cross valve 60, magnetic valve 70, check valve 50.First Heat Exchanger 10 and the second heat exchanger 20 are by the selective double-cylinder variable-capacity compressor 30 that is communicated with of cross valve 60, magnetic valve 70 one end connect the exhaust outlet of double-cylinder variable-capacity compressor 30, the other end connects respectively the lower cylinder air entry of check valve 50 and double-cylinder variable-capacity compressor 30, one end connected electromagnetic valve 70 of check valve 50, other end access gas-liquid separator 80 inner chambers, it is from gas-liquid separator 80 to lower cylinder air entry that the permission of check valve 50 flows to.The inner chamber other end of gas-liquid separator 80 connects upper cylinder air entry.
Air-conditioning system of the present utility model is in service, and in the time that magnetic valve powers on, electromagnetic valve pipeline is opened, and exhaust outlet of compressor and compressor lower cylinder air entry are communicated with, and compressor is single cylinder operation (lower rotor part idle running) now; In the time of magnetic valve power down, electromagnetic valve pipeline is closed, and compressor lower cylinder air entry and gas-liquid separator inner chamber are communicated with, and system return-air enters upper cylinder and lower cylinder simultaneously, now twin-tub operation of compressor.(in this embodiment, be normally closed solenoid valve, just in time contrary with power down if normally open solenoid valve powers on.)
Preferably, be also provided with capillary, connect with described magnetic valve (70), when air-conditioning system switches to twin-tub running status by single cylinder running status, lower cylinder, in high pressure conditions, is accelerated the balance between high-low pressure by capillary.
In addition, the magnetic valve that the utility model is mentioned can also utilize other the valve that possesses same function to substitute.For example can carry out replacement of solenoid valve with two-port valve.General two-port valve has two kinds of high voltage type two-port valve 71 (structure is referring to Fig. 3, Fig. 4) and low pressure two-port valves 72 (structure is referring to Fig. 5, Fig. 6), its middle and high voltage type two-port valve has A, B, C, tetra-interfaces of D, and low pressure two-port valve has A, B, tri-interfaces of C.
In the utility model, can also replace with two-port valve the scheme of magnetic valve, for example:
High voltage type two-port valve A interface is connected to variable positive displacement compressor exhaust side, and B interface connects air entry under check valve and compressor, and C interface connects variable positive displacement compressor suction side, and D interface connects variable positive displacement compressor exhaust side.
High voltage type two-port valve A interface is connected to air entry under check valve and compressor, and B interface connects variable positive displacement compressor exhaust side, and C interface connects variable positive displacement compressor suction side, and D interface connects variable positive displacement compressor exhaust side.
High voltage type two-port valve A interface is connected to variable positive displacement compressor exhaust side, and B interface connects air entry under check valve and compressor, and C interface connects variable positive displacement compressor exhaust side, and D interface connects variable positive displacement compressor suction side.
High voltage type two-port valve A interface is connected to air entry under check valve and compressor, and B interface connects variable positive displacement compressor exhaust side, and C interface connects variable positive displacement compressor exhaust side, and D interface connects variable positive displacement compressor suction side.
Low pressure two-port valve A interface is connected to variable positive displacement compressor exhaust side, and B interface connects air entry under check valve and compressor, and C interface connects variable positive displacement compressor suction side.
Low pressure two-port valve A interface is connected to air entry under check valve and compressor, and B interface connects variable positive displacement compressor exhaust side, and C interface connects variable positive displacement compressor suction side.
Low pressure two-port valve A interface is connected to variable positive displacement compressor exhaust side, and B interface connects air entry under check valve and compressor, and C interface connects variable positive displacement compressor exhaust side.
Low pressure two-port valve A interface is connected to air entry under check valve and compressor, and B interface connects variable positive displacement compressor exhaust side, and C interface connects variable positive displacement compressor exhaust side.
As can be seen from the above description, the utility model has been realized following technique effect:
1, expand cooling system/heating capacity adjustable range, improve efficiency and comfortableness.
2, ensure within the specific limits compressor electric motor efficiency, improve efficiency.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. an air-conditioning system, is characterized in that, comprises double-cylinder variable-capacity compressor (30), and described double-cylinder variable-capacity compressor (30) has upper cylinder air entry, lower cylinder air entry and exhaust outlet; Also comprise magnetic valve (70), described magnetic valve (70) one end connects the exhaust outlet of described double-cylinder variable-capacity compressor (30), the other end connects respectively the lower cylinder air entry of check valve (50) and described double-cylinder variable-capacity compressor (30), one end of described check valve (50) connects described magnetic valve (70), the inner chamber of other end access gas-liquid separator.
2. air-conditioning system according to claim 1, is characterized in that, described air-conditioning system has state and the single cylinder running status of twin-tub operation.
3. air-conditioning system according to claim 2, is characterized in that, described air-conditioning system has described magnetic valve (70) pipeline closes, the twin-tub running status that described lower cylinder air entry and described gas-liquid separator are communicated with.
4. air-conditioning system according to claim 2, is characterized in that, described air-conditioning system has described magnetic valve (70) pipeline connection, the single cylinder running status that described exhaust outlet and described lower cylinder air entry are communicated with.
5. air-conditioning system according to claim 1, is characterized in that, also comprise, and capillary, in parallel with described check valve (50).
6. air-conditioning system according to claim 1, is characterized in that, also comprises, is arranged on the temperature-sensitive bag at air inlet place of indoor set or the temperature-sensitive bag of the temperature-sensitive bag of indoor set manual operator or remote controller, for detection of indoor environment temperature T
ring.
7. air-conditioning system according to claim 6, is characterized in that, also comprises control module; Described control module control compressor operating frequency is F, and with the time cycle circulation of presetting, circulation records indoor environment temperature T
ringand obtain user arrange temperature objectives T
if; It is F=A (T that described control system has the compressor operating of making frequency
ring-T
ifthe first state of)+B+E is Fn=F with making the running frequency of compressor
n-1d+C (Tn-Tn-1)] the second state of/D, wherein, A, B, E are predetermined constant, and F is compressor operating frequency, and Fn represents the compressor operating frequency of n sense cycle; Fn-1 represents n-1 sense cycle compressor operating frequency, and C, D are predetermined constant, and Tn represents the indoor environment temperature detecting, T the n time
n-1represent the indoor environment temperature detecting for the n-1 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725740.2U CN203823994U (en) | 2013-11-15 | 2013-11-15 | Air-conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320725740.2U CN203823994U (en) | 2013-11-15 | 2013-11-15 | Air-conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823994U true CN203823994U (en) | 2014-09-10 |
Family
ID=51479481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320725740.2U Expired - Lifetime CN203823994U (en) | 2013-11-15 | 2013-11-15 | Air-conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823994U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180372A (en) * | 2015-09-29 | 2015-12-23 | Tcl空调器(中山)有限公司 | Method and device for controlling air conditioner |
| WO2018006569A1 (en) * | 2016-07-08 | 2018-01-11 | 广东美的制冷设备有限公司 | Air-conditioning system |
| CN109916056A (en) * | 2018-08-17 | 2019-06-21 | 珠海格力电器股份有限公司 | A kind of method, apparatus and unit, air-conditioning system of control compression machine-cut cylinder |
-
2013
- 2013-11-15 CN CN201320725740.2U patent/CN203823994U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105180372A (en) * | 2015-09-29 | 2015-12-23 | Tcl空调器(中山)有限公司 | Method and device for controlling air conditioner |
| CN105180372B (en) * | 2015-09-29 | 2018-07-31 | Tcl空调器(中山)有限公司 | Air-conditioner control method and device |
| WO2018006569A1 (en) * | 2016-07-08 | 2018-01-11 | 广东美的制冷设备有限公司 | Air-conditioning system |
| CN109916056A (en) * | 2018-08-17 | 2019-06-21 | 珠海格力电器股份有限公司 | A kind of method, apparatus and unit, air-conditioning system of control compression machine-cut cylinder |
| CN109916056B (en) * | 2018-08-17 | 2020-08-14 | 珠海格力电器股份有限公司 | Method and device for controlling cylinder cutting of compressor, unit and air conditioning system |
| US11852132B2 (en) | 2018-08-17 | 2023-12-26 | Gree Electric Appliances, Inc. Of Zhuhai | Compressor cylinder switching control method and device, unit and air conditioning system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |