CN100559092C - Aircondition - Google Patents
Aircondition Download PDFInfo
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- CN100559092C CN100559092C CNB2005101318953A CN200510131895A CN100559092C CN 100559092 C CN100559092 C CN 100559092C CN B2005101318953 A CNB2005101318953 A CN B2005101318953A CN 200510131895 A CN200510131895 A CN 200510131895A CN 100559092 C CN100559092 C CN 100559092C
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- temperature
- admission pressure
- aircondition
- checkout gear
- compressor
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Abstract
The invention provides a kind of aircondition, this aircondition outside the temperature degree lower, cause under the situation that admission pressure often descends because of frosting takes place on the outdoor heat converter, although can solve the starting that needs the heating capacity air-conditioner especially/stop frequency increasing, to the problem of indoor heating capacity deficiency.When heating operation, under by the occasion of the detected admission pressure of admission pressure checkout gear (7) less than the regulation setting value of setting for temperature degree outside each, descend by the operating frequency that makes compressor (1), not only can suppress the decline of admission pressure, the frosting that delay is carried out on outdoor heat exchanger (2) can also be carried out and the corresponding operation of desired indoor heating ability.
Description
Technical field
The present invention relates to a kind of aircondition.
Background technology
When heating operation outside under the condition that the temperature degree is lower, on the outdoor heat converter frosting can take place, deficiency can appear in the refrigerant amount of the air inlet side of compressor, causes admission pressure to descend.Under such occasion, the method of controlling operation thereof of taking in the existing aircondition is generally shown in the flow chart among Figure 10, promptly when low tension switch is worked, compressor is stopped, air-conditioner is carried out promptly stopped (example wherein can be opened flat 8-254362 with reference to the open communique spy of Japan Patent).
But; outside the temperature degree very low, often cause under the situation that admission pressure descends because of occurring frosting on the outdoor heat converter; although need heating capacity this moment especially; but adopting above-mentioned routine operation control method, the frequency that air-conditioner occurs and start/stop through regular meeting increases, to the problem of indoor heating capacity deficiency.
Summary of the invention
The present invention is intended to solve the above-mentioned problems in the prior art, its purpose is to provide a kind of like this aircondition, method of controlling operation thereof in this aircondition is: that carries out when the temperature degree is very low outside heats in the operation, even decline has appearred in admission pressure, compressor is stopped, but its operating frequency is reduced, make deficiency can not occur to indoor heating capacity.
In order to address the above problem, the present invention descends the frequency of compressor under admission pressure is lower than occasion for the pre-specified setting value of temperature degree outside each.
The technique effect that the present invention produces is as follows.Method of controlling operation thereof of the present invention is that carries out when the temperature degree is low outside heats in the operating process, even decline has appearred in admission pressure, does not also make the compressor shut-down operation, but frequency is descended.Like this, deficiency can not occur, and the frosting of carrying out can be delayed also on outdoor heat converter to indoor heating capacity.
The specific embodiment of the present invention is summarized as follows.The 1st embodiment of the present invention is, when heating operation, if by the detected admission pressure of admission pressure checkout gear less than for the pre-specified setting value of each outer temperature degree, the operating frequency of compressor is descended.Like this, can suppress the decline of admission pressure, postpone the frosting on outdoor heat converter, carry out, make indoor heating capacity be kept and do not descend.
The 2nd embodiment is specially, and in the aircondition in the 1st embodiment, according to the differential temperature between indoor set inlet temperature and the remote controller design temperature, the slippage of the operating frequency of compressor is changed.Like this, not only can suppress the decline of admission pressure, the frosting that delay is carried out on outdoor heat converter, but also can realize and the corresponding operation of the desired heating capacity of the interior space, improve user's comfort.
The 3rd embodiment is specially, in the aircondition in the 1st embodiment, when heating operation, if less than for the pre-specified setting value of each outer temperature degree, the operating frequency of compressor is descended by the detected outdoor heat converter temperature of outdoor heat converter temperature-detecting device.Like this, can suppress the decline of admission pressure, postpone the frosting on outdoor heat converter, carry out, make indoor heating capacity be kept and do not descend.
The 4th embodiment is specially, and in the aircondition in the 3rd embodiment, according to the differential temperature between indoor set inlet temperature and the remote controller design temperature, the slippage of the operating frequency of compressor is changed.Like this, not only can suppress the decline of admission pressure, the frosting that delay is carried out on outdoor heat converter, but also can realize and the corresponding operation of the desired heating capacity of the interior space, improve user's comfort.
The 5th embodiment is specially, and in the aircondition in arbitrary embodiment of the 1st～the 4th, is provided with the number of times restriction for the operation that compressor frequency is descended.Like this, excessive reduction that can blanketing frequency prevents the heating capacity situation not enough greatly with respect to the desired heating capacity of the interior space of air-conditioner.
Description of drawings
Fig. 1 shows the freezing loop schematic diagram in the embodiments of the invention,
Fig. 2 is that the admission pressure in the embodiments of the invention 1,5 is set figure,
Fig. 3 is the operational flowchart in the embodiment of the invention 1,
Fig. 4 is the frequency reducing coefficient schematic diagram in the embodiment of the invention 2,4,
Fig. 5 is the operational flowchart in the embodiment of the invention 2,
Fig. 6 is the schematic diagram that the off-premises station heat exchanger temperature in the embodiment of the invention 3 is set situation,
Fig. 7 is the operational flowchart in the embodiment of the invention 3,
Fig. 8 is the operational flowchart in the embodiment of the invention 4,
Fig. 9 is the operational flowchart in the embodiment of the invention 5,
Figure 10 is the flow chart in the existing aircondition.
In the above-mentioned accompanying drawing, 1 is power variable type compressor, and 2 is outdoor heat exchanger, 3 is outdoor blowers, and 4 is the off-premises station electric expansion valve, and 5 is cross valve, 6 is the outdoor heat converter temperature-detecting device, and 7 is the admission pressure checkout gear, and 8 is outer temperature degree checkout gear, 9 is the off-premises station control device, 10 is indoor side heat exchanger, and 11 is indoor blower, and 12 is the indoor set electric expansion valve, 13 is indoor set intake air temperature checkout gear, and 14 is the indoor set control device.
The specific embodiment
Come with reference to the accompanying drawings some embodiments of the present invention are elaborated.Need to prove that technical scope of the present invention is not subjected to the restriction of these embodiment.
(embodiment 1)
Freezing loop schematic diagram among the embodiment 1 has been shown among Fig. 1.
Comprise off-premises station and indoor set in the freezing loop shown in Fig. 1, comprise in the described off-premises station: power variable type compressor 1; Outdoor heat exchanger 2; Outdoor blowers 3; The electric expansion valve 4 that can reduce pressure freely makes refrigerating operation and heats the cross valve 5 that operation switches; Outdoor heat converter temperature-detecting device 6; Admission pressure checkout gear 7; Outer temperature degree checkout gear 8; With off-premises station control device 9.Comprise in the indoor set: indoor side heat exchanger 10; Indoor blower 11; The electric expansion valve 12 that is used to reduce pressure; Indoor set intake air temperature checkout gear 13; With indoor set control device 14.
Fig. 2 is the admission pressure setting value table that is used to illustrate method of controlling operation thereof of the present invention, wherein, has all distributed the admission pressure setting value of regulation for each outer temperature degree.
Fig. 3 is the operational flowchart that is used to illustrate method of controlling operation thereof of the present invention.
When heating operation, detect admission pressure Ps by admission pressure checkout gear 7 earlier, detect outer temperature degree To by outer temperature degree checkout gear 8.Then, draw admission pressure setting value Ps_1～Ps_6 by outer temperature degree with reference to Fig. 2, the admission pressure Ps with reality compares again.
If admission pressure Ps sets value less than admission pressure, then on current frequency, be multiplied by the frequency reducing COEFFICIENT K f of regulation, frequency is descended.
By carrying out above-mentioned operation, can suppress the decline of admission pressure, delay the frosting on the outdoor heat converter, and be maintained indoor heating capacity, heating capacity is unlikely descends.
(embodiment 2)
Fig. 4 is the frequency reducing coefficient table that is used to illustrate method of controlling operation thereof of the present invention, wherein, for every kind of temperature difference between remote controller design temperature and the indoor intake air temperature, has all allocated the frequency reducing coefficient of regulation in advance.
Fig. 5 is the operational flowchart that is used to illustrate method of controlling operation thereof of the present invention.
With the same among the embodiment 1, when heating operation, detect admission pressure Ps by admission pressure checkout gear 7 earlier, detect outer temperature degree To by outer temperature degree checkout gear 8.
Then, detect intake air temperature Ti, calculate the differential temperature Δ D between remote controller design temperature and the Ti again, and draw frequency reducing COEFFICIENT K f by Fig. 4 by indoor intake air temperature checkout gear.
If admission pressure Ps sets value less than admission pressure, then on current frequency, be multiplied by Kf, frequency is descended.
By carrying out such operation, not only can suppress the decline of admission pressure, delay the frosting on outdoor heat converter, carried out, but also can realize and the corresponding operation of desired indoor heating ability, improve user's comfort.
(embodiment 3)
Fig. 6 is the off-premises station heat exchanger temperature setting value table that is used to illustrate another kind of method of controlling operation thereof of the present invention, wherein, has all distributed the off-premises station heat exchanger temperature setting value of regulation for each outer temperature degree.
Fig. 7 is the operational flowchart that is used for illustrating the present invention's method of controlling operation thereof.
When heating operation, at first detect off-premises station heat exchanger temperature Te, and detect outer temperature degree To by outer temperature degree checkout gear 8 by off-premises station heat exchanger temperature checkout gear 6.
Next, obtain corresponding off-premises station heat exchanger temperature setting value Te_1～Te_6 by outer temperature degree with reference to Fig. 7, the off-premises station heat exchanger temperature Te with reality compares again.
If off-premises station heat exchanger temperature Te less than off-premises station heat exchanger temperature setting value, then is multiplied by the frequency reducing COEFFICIENT K f of regulation on current frequency, frequency is descended.
By carrying out such operation, can suppress the decline of admission pressure, the frosting that delay is carried out on outdoor heat converter, and can be maintained indoor heating capacity, heating capacity is unlikely descends.
(embodiment 4)
Fig. 8 is the operational flowchart that is used for illustrating another method of controlling operation thereof of the present invention.
With the same among the embodiment 3, when heating operation, at first detect off-premises station heat exchanger temperature Te, and detect outer temperature degree To by outer temperature degree checkout gear 8 by off-premises station heat exchanger temperature checkout gear 6.
Then, detect intake air temperature Ti, and calculate the differential temperature Δ D between remote controller design temperature and the Ti, by drawing frequency reducing COEFFICIENT K f among Fig. 4 by indoor intake air temperature checkout gear.
If off-premises station heat exchanger temperature Te then is multiplied by Kf less than off-premises station heat exchanger temperature setting value on current frequency, frequency is descended.
By carrying out these operations, not only can suppress the decline of admission pressure, delay the frosting on outdoor heat converter, carried out, but also can realize and the corresponding operation of desired indoor heating ability, improve user's comfort.
(embodiment 5)
Fig. 9 is the operational flowchart that is used to illustrate another kind of method of controlling operation thereof of the present invention.
When heating operation, at first detect admission pressure Ps, and detect outer temperature degree To by outer temperature degree checkout gear 8 by admission pressure checkout gear 7.
Then, draw with the corresponding admission pressure of outer temperature degree from Fig. 2 and to set value Ps_1～Ps_6, and compare with the admission pressure Ps of reality.If admission pressure Ps sets value less than admission pressure, then on current frequency, be multiplied by the frequency reducing COEFFICIENT K f of regulation, frequency is descended.In addition, the operation that frequency is descended is carried out at most 3 times, above behind this number of times, then is maintained current frequency.
In the above description, though only in embodiment 5, be provided with the number of times restriction, the number of times restriction be set in other embodiments also be fine.
By carrying out such operation, excessive reduction that can blanketing frequency prevents the not enough greatly situation of heating capacity of air-conditioner for the desired heating capacity of the interior space.
In addition, in the aircondition that method of controlling operation thereof of the present invention is not limited to be made of a pair of indoor set and off-premises station, also be applicable in the multi-room type air-conditioning devices such as one drag two.
Claims (3)
1. aircondition, comprising off-premises station and indoor set,
Comprise in the described off-premises station: power variable type compressor; Outdoor heat exchanger; Outdoor blowers; Electric expansion valve; Cross valve; The outdoor heat converter temperature-detecting device; The low pressure checkout gear; Outer temperature degree checkout gear and off-premises station control device;
Described indoor set comprises: indoor side heat exchanger; Indoor blower; Electric expansion valve; Indoor set intake air temperature checkout gear; With the indoor set control device,
It is characterized in that: when heating operation,, the operating frequency of compressor is descended if set value less than the regulation of setting for each outer temperature degree by the detected admission pressure of low pressure checkout gear, and
Described aircondition as admission pressure, according to the temperature difference between indoor set inlet temperature and the remote controller design temperature, changes the slippage of the operating frequency of compressor with low pressure.
2. aircondition as claimed in claim 1, it is characterized in that: go out low pressure from the temperature estimation of outdoor heat exchanger, if the value of described low pressure then makes the operating frequency of compressor descend less than for the pre-specified setting value of each outer temperature degree.
3. aircondition as claimed in claim 1 or 2 is characterized in that: be provided with the number of times restriction for the operation that compressor frequency is descended.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004363880A JP2006170528A (en) | 2004-12-16 | 2004-12-16 | Air conditioner |
| JP2004363880 | 2004-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789846A CN1789846A (en) | 2006-06-21 |
| CN100559092C true CN100559092C (en) | 2009-11-11 |
Family
ID=36671476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101318953A Expired - Fee Related CN100559092C (en) | 2004-12-16 | 2005-12-15 | Aircondition |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2006170528A (en) |
| CN (1) | CN100559092C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543288A (en) * | 2017-08-25 | 2018-01-05 | 广东美的暖通设备有限公司 | Air-conditioning system, the control method of air-conditioning system and device |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008202908A (en) * | 2007-02-22 | 2008-09-04 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| JP2011174639A (en) * | 2010-02-24 | 2011-09-08 | Hitachi Appliances Inc | Air conditioner |
| JP2013164251A (en) * | 2012-02-13 | 2013-08-22 | Panasonic Corp | Refrigerating apparatus |
| CN103968494B (en) * | 2013-01-25 | 2016-08-03 | 珠海格力电器股份有限公司 | Control method of air conditioning system and air conditioning system |
| CN103292422B (en) * | 2013-06-17 | 2015-12-23 | 南京天加空调设备有限公司 | Direct-current variable-frequency multi-connection mechanism cold runs pressure of inspiration(Pi) control method |
| JP5590195B1 (en) | 2013-07-11 | 2014-09-17 | 株式会社富士通ゼネラル | Air conditioner |
| CN104764171B (en) * | 2015-04-27 | 2017-10-27 | 珠海格力电器股份有限公司 | Air conditioner and control method and device thereof |
| KR102372489B1 (en) * | 2017-07-10 | 2022-03-08 | 엘지전자 주식회사 | Air conditioning device using vapor injection cycle and method for controlling thereof |
| CN108204657B (en) * | 2017-12-29 | 2020-07-28 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner and computer readable storage medium |
| CN108716756B (en) * | 2018-05-24 | 2020-10-23 | 广东美的制冷设备有限公司 | Operation control method, operation control device, air conditioner and computer readable storage medium |
| DE112019007078T5 (en) * | 2019-03-25 | 2021-12-30 | Mitsubishi Electric Corporation | AIR CONDITIONER |
| CN110500699B (en) * | 2019-08-19 | 2021-01-05 | 珠海格力电器股份有限公司 | Air conditioner shutdown protection method and device, air conditioner controller, air conditioner and storage medium |
| CN112406449B (en) * | 2019-08-23 | 2022-06-10 | 上海汽车集团股份有限公司 | Control method and control system for delaying frosting of condenser outside vehicle |
| CN110617610B (en) * | 2019-09-20 | 2021-05-28 | 海信（山东）空调有限公司 | Compressor frequency control method, outdoor unit and variable frequency air conditioner |
-
2004
- 2004-12-16 JP JP2004363880A patent/JP2006170528A/en not_active Withdrawn
-
2005
- 2005-12-15 CN CNB2005101318953A patent/CN100559092C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543288A (en) * | 2017-08-25 | 2018-01-05 | 广东美的暖通设备有限公司 | Air-conditioning system, the control method of air-conditioning system and device |
| CN107543288B (en) * | 2017-08-25 | 2020-03-03 | 广东美的暖通设备有限公司 | Air conditioning system, and control method and device of air conditioning system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1789846A (en) | 2006-06-21 |
| JP2006170528A (en) | 2006-06-29 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20131215 |