CN103375935B - Two-stage compression circulation system and there is its control method of air-conditioner - Google Patents
Two-stage compression circulation system and there is its control method of air-conditioner Download PDFInfo
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- CN103375935B CN103375935B CN201210125289.0A CN201210125289A CN103375935B CN 103375935 B CN103375935 B CN 103375935B CN 201210125289 A CN201210125289 A CN 201210125289A CN 103375935 B CN103375935 B CN 103375935B
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Abstract
The invention provides a kind of two-stage compression circulation system and there is its control method of air-conditioner.According to two-stage compression circulation system of the present invention, comprise compressor, compressor is provided with gas supplementing opening; Indoor heat exchanger, is connected with compressor; Outdoor heat exchanger, is connected with compressor; Also comprise: flash vessel, be connected with indoor heat exchanger with outdoor heat exchanger respectively; Magnetic valve, is connected with the gas outlet of flash vessel with the gas supplementing opening of compressor respectively.According to the control method of air-conditioner of the present invention, air-conditioner comprises aforesaid two-stage compression circulation system, and when to meet following condition simultaneously, to compressor tonifying Qi: the operating frequency of compressor is F, the switching frequency of compressor is f, F >=f; Under refrigeration mode, outdoor environment temperature is T1, and switching temperature is T, T1 >=T; Or under heating mode, outdoor environment temperature is T2, switching temperature T, T2≤T; Boot running time is t, and after the start of air-conditioner, running time reaches t.
Description
Technical field
The present invention relates to compressor control field, especially, relate to a kind of two-stage compression circulation system and there is its control method of air-conditioner.
Background technology
The heating districts that China Huanghe valley, North China etc. are vast, in the winter of cold, because pressure ratio is large, refrigerant flow is low, and the heating capacity of traditional air-cooled heat pump unit is significantly decayed, and cannot meet the requirement of heat supply heating, also cannot reliability service.Traditional air cool heat pump air conditioning system generally can only use under the environment more than-5 DEG C.Need to develop a kind of heating performance both having improved system, the energy-conservation comfortable small rotor compression air-cooled heat pump unit of the refrigeration performance of system can be improved again.
Summary of the invention
The object of the invention is the control method of the air-conditioner providing a kind of two-stage compression circulation system and have it, to solve air-conditioner in use efficiency and the energy-conservation technical problem that can not take into account.
For achieving the above object, the invention provides a kind of two-stage compression circulation system, comprise compressor, compressor is provided with gas supplementing opening; Indoor heat exchanger, is connected with compressor; Outdoor heat exchanger, is connected with compressor; Also comprise: flash vessel, be connected with indoor heat exchanger with outdoor heat exchanger respectively; Magnetic valve, is connected with the gas outlet of flash vessel with the gas supplementing opening of compressor respectively.
Further, the internal diameter of the path of magnetic valve is d, 1mm≤d≤3mm.
Further, also comprise the control module of Controlling solenoid valve opening and closing, control module is electrically connected with magnetic valve.
Further, be provided with first throttle valve between flash vessel and outdoor heat exchanger, between flash vessel and indoor heat exchanger, be provided with second throttle.
The present invention also provides a kind of control method of air-conditioner, and air-conditioner comprises aforesaid two-stage compression circulation system, and when to meet following condition simultaneously, to compressor tonifying Qi: the operating frequency of compressor is F, the switching frequency of compressor is f, F >=f; Under refrigeration mode, outdoor environment temperature is T1, and switching temperature is T, T1 >=T; Or under heating mode, outdoor environment temperature is T2, switching temperature T, T2≤T; Boot running time is t, and after the start of air-conditioner, running time reaches t.
Further, control module Controlling solenoid valve is opened and is closed stopping to compressor tonifying Qi to compressor tonifying Qi or Controlling solenoid valve.
Further, under heating defrost pattern, shut electromagnetic valve, stops to compressor tonifying Qi.
Further, under dehumidification mode, shut electromagnetic valve, stops to compressor tonifying Qi.
Further, switching frequency is f, 20Hz≤f≤40Hz.
Further, under refrigeration mode, switching temperature is T, 20 DEG C≤T≤25 DEG C.
Further, under heating mode, switching temperature is T, 10 DEG C≤T≤15 DEG C.
Further, boot running time is t, 8s≤t≤15s.
The present invention has following beneficial effect:
The present invention, by arranging the switch of solenoid control compressor tonifying Qi, improves the operating efficiency of two-stage compression circulation system, economize energy.Control method, controls air-conditioner according to conditions such as compressor operating, outdoor environment temperature, boot running time for target with energy-conservation and efficiency, ensures secondary cycle reliability service, makes that system is both energy-conservation turn improves operating efficiency.
Except object described above, feature and advantage, the present invention also has other object, feature and advantage.Below with reference to figure, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and 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 schematic diagram according to two-stage compression circulation system of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
See Fig. 1, according to two-stage compression circulation system of the present invention, comprising: compressor 1, compressor 1 is provided with gas supplementing opening; Indoor heat exchanger 4, is connected with compressor 1; Outdoor heat exchanger 3, is connected with compressor 1; Also comprise: flash vessel 5, be connected with indoor heat exchanger 4 with outdoor heat exchanger 3 respectively; Magnetic valve 8, is connected with the gas outlet of flash vessel 5 with the gas supplementing opening of compressor 1 respectively.Cross valve 2 is connected with indoor heat exchanger with outdoor heat exchanger 3 respectively, and cross valve 2 is also connected with compressor 1.By arranging the switch of solenoid control compressor tonifying Qi, improve the operating efficiency of two-stage compression circulation system, economize energy.
See Fig. 1, the internal diameter of the path of magnetic valve 8 is d, 1mm≤d≤3mm.Internal diameter within the scope of this has certain capillary throttle effect, can form height pressure reduction, stop the phenomenon occurred with liquid in gas during tonifying Qi.
See Fig. 1, also comprise the control module of Controlling solenoid valve 8 opening and closing, control module is electrically connected with magnetic valve 8.By the power on/off of magnetic valve 8, and then realize the switch controlling tonifying Qi process, simple.
See Fig. 1, be provided with first throttle valve 7a between flash vessel 5 and outdoor heat exchanger 3, between flash vessel 5 and indoor heat exchanger 4, be provided with second throttle 7b.
According to the control method of air-conditioner of the present invention, air-conditioner comprises aforesaid two-stage compression circulation system, and when to meet following condition simultaneously, to compressor 1 tonifying Qi: the operating frequency of compressor 1 is F, the switching frequency of compressor 1 is f, F >=f; Under refrigeration mode, outdoor environment temperature is T1, and switching temperature is T, T1 >=T; Or under heating mode, outdoor environment temperature is T2, switching temperature T, T2≤T; Boot running time is t, and after the start of air-conditioner, running time reaches t.
Control module Controlling solenoid valve 8 is opened and is closed stopping to compressor 1 tonifying Qi to compressor 1 tonifying Qi or Controlling solenoid valve 8.To be energized cut-off switch control realization by magnetic valve 8, to be simple and easy to realize.Open when magnetic valve 8 is energized, solenoid (often burst at the seams circle) is energized, start tonifying Qi; Close during power-off, solenoid power-off, stop tonifying Qi.
Under heating defrost pattern, shut electromagnetic valve 8, stops to compressor 1 tonifying Qi.Heating defrost process actual is run with cryogenic refrigeration, then need to close the reliability that tonifying Qi ensures whole compressibility.
Under dehumidification mode, shut electromagnetic valve 8, stops to compressor 1 tonifying Qi.The running frequency that dehumidifies in addition is lower, even if open tonifying Qi also obviously can not increase latent heat, improve moisture removal, the efficiency of namely opening tonifying Qi is low, so do not need to open tonifying Qi.
Switching frequency is f, 20Hz≤f≤40Hz.Then disconnect tonifying Qi when compressor frequency is less than switching frequency, when higher than under switching frequency condition, then open tonifying Qi and improve cooling or heating effect.When compressor frequency is higher than switching frequency, illustrates that compressor can not reach desired effects, now open tonifying Qi, improve compressor efficiency, to reach desired effects, switching frequency is generally arranged between 20-40Hz according to different situations.
Under refrigeration mode, switching temperature T, 20 DEG C≤T≤25 DEG C.Under heating mode, switching temperature T, 10 DEG C≤T≤15 DEG C.
Boot running time is t, 8s≤t≤15s.In order to ensure whole system security of operation, carrying out the switching of tonifying Qi process after start is stable again, opening tonifying Qi again after therefore needing start to run certain hour, general setting boot running time is 8-15s.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
The present invention, by arranging the switch of solenoid control compressor tonifying Qi, improves the operating efficiency of two-stage compression circulation system, economize energy.Control method with energy-conservation and efficiency for target, control according to compressor operating, outdoor environment temperature, boot running time etc., ensure secondary cycle reliability service, and converter technique and secondary cycle are organically combined, improve the level of comfort of convertible frequency air-conditioner, widen the use range of operation of convertible frequency air-conditioner, the range of operation especially under low temperature condition, optimize the energy conservation characteristic improving convertible frequency air-conditioner simultaneously.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a control method for air-conditioner, is characterized in that, described air-conditioner comprises two-stage compression circulation system, and described two-stage compression circulation system comprises:
Compressor (1), (1) is provided with gas supplementing opening with described compressor;
Indoor heat exchanger (4), is connected with described compressor (1);
Outdoor heat exchanger (3), is connected with described compressor (1);
Flash vessel (5), is connected with described indoor heat exchanger (4) with described outdoor heat exchanger (3) respectively;
Magnetic valve (8), is connected with the gas outlet of described flash vessel (5) with the gas supplementing opening of described compressor (1) respectively, and the internal diameter of the path of described magnetic valve (8) is d, 1mm≤d≤3mm,
The control method of described air-conditioner comprises:
When to meet following condition simultaneously, to described compressor (1) tonifying Qi:
The operating frequency of described compressor (1) is F, and the switching frequency of described compressor (1) is f, F >=f;
Under refrigeration mode, outdoor environment temperature is T1, and switching temperature is T, T1 >=T; Or under heating mode, outdoor environment temperature is T2, switching temperature T, T2≤T;
Boot running time is t, and after the start of described air-conditioner, running time reaches t.
2. the control method of air-conditioner according to claim 1, is characterized in that, described two-stage compression circulation system also comprises the control module of Controlling solenoid valve (8) opening and closing, and described control module is electrically connected with described magnetic valve (8).
3. the control method of air-conditioner according to claim 2, it is characterized in that, be provided with first throttle valve (7a) between described flash vessel (5) and described outdoor heat exchanger (3), between described flash vessel (5) and described indoor heat exchanger (4), be provided with second throttle (7b).
4. the control method of air-conditioner according to claim 1, it is characterized in that, control module controls described magnetic valve (8) and opens to (1) tonifying Qi of described compressor or control described magnetic valve (8) closedown stopping to described compressor (1) tonifying Qi.
5. the control method of air-conditioner according to claim 4, is characterized in that, under heating defrost pattern, closes described magnetic valve (8), stops to described compressor (1) tonifying Qi.
6. the control method of air-conditioner according to claim 4, is characterized in that, under dehumidification mode, closes described magnetic valve (8), stops to described compressor (1) tonifying Qi.
7. the control method of air-conditioner according to claim 1, is characterized in that, described switching frequency is f, 20Hz≤f≤40Hz.
8. the control method of air-conditioner according to claim 1, is characterized in that, under refrigeration mode, described switching temperature is T, 20 DEG C≤T≤25 DEG C.
9. the control method of air-conditioner according to claim 1, is characterized in that, under heating mode, described switching temperature is T, 10 DEG C≤T≤15 DEG C.
10. the control method of air-conditioner according to claim 1, is characterized in that, described boot running time is t, 8s≤t≤15s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210125289.0A CN103375935B (en) | 2012-04-25 | 2012-04-25 | Two-stage compression circulation system and there is its control method of air-conditioner |
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| CN201210125289.0A CN103375935B (en) | 2012-04-25 | 2012-04-25 | Two-stage compression circulation system and there is its control method of air-conditioner |
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| CN103375935A CN103375935A (en) | 2013-10-30 |
| CN103375935B true CN103375935B (en) | 2016-03-23 |
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| CN104596166A (en) * | 2013-10-31 | 2015-05-06 | 海尔集团公司 | Air conditioner and air supplying and enthalpy adding method thereof |
| CN104110908B (en) * | 2014-07-03 | 2016-08-31 | 珠海格力电器股份有限公司 | Three stage compression autocascade cycle heat pump and control method thereof |
| CN104456840B (en) * | 2014-11-13 | 2017-06-13 | 广东美的制冷设备有限公司 | Air injection enthalpy-increasing type air-conditioning and its control method |
| CN105091405A (en) * | 2015-07-22 | 2015-11-25 | 珠海格力电器股份有限公司 | Air conditioning unit and method for increasing intake capacity of air conditioning unit |
| CN106196482B (en) * | 2016-07-28 | 2019-02-15 | 广东美芝制冷设备有限公司 | The control method of air-conditioning system |
| KR102581680B1 (en) * | 2017-02-01 | 2023-09-22 | 엘지전자 주식회사 | Outdoor unit of an air conditioner |
| DE102017214941A1 (en) | 2017-08-25 | 2019-02-28 | Dometic Sweden Ab | Recreational vehicle, cooling device, control system and method of controlling the cooling device |
| WO2019082168A1 (en) | 2017-10-27 | 2019-05-02 | Dometic Sweden Ab | Systems, methods, and apparatuses for providing communications between climate control devices in a recreational vehicle |
| CN109539623B (en) * | 2018-11-28 | 2020-05-19 | 珠海格力电器股份有限公司 | Air conditioning system and air supplementing and enthalpy increasing control method thereof |
| CN109990429B (en) * | 2019-03-15 | 2021-04-09 | 奥克斯空调股份有限公司 | Air conditioner defrosting control method and air conditioner |
| CN109945440A (en) * | 2019-03-29 | 2019-06-28 | 海信（山东）空调有限公司 | The heat-production control method and Gas-supplying enthalpy-increasing system of Gas-supplying enthalpy-increasing system |
| CN111156651B (en) * | 2020-01-14 | 2021-02-26 | 珠海格力电器股份有限公司 | Gulp valve control method, compressor, air conditioner, memory and controller |
| CN111306731B (en) * | 2020-03-03 | 2021-03-23 | 珠海格力电器股份有限公司 | Air conditioner electromagnetic valve control method, device and equipment, electromagnetic valve system and air conditioner |
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