CN102313334A - Defrosting control method for direct-current variable-frequency air conditioner with water heater - Google Patents
Defrosting control method for direct-current variable-frequency air conditioner with water heater Download PDFInfo
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- CN102313334A CN102313334A CN201110180954A CN201110180954A CN102313334A CN 102313334 A CN102313334 A CN 102313334A CN 201110180954 A CN201110180954 A CN 201110180954A CN 201110180954 A CN201110180954 A CN 201110180954A CN 102313334 A CN102313334 A CN 102313334A
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- water heater
- defrosting
- machine
- air conditioner
- expansion valve
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Abstract
The invention provides a defrosting control method for a direct-current variable-frequency air conditioner with a water heater, which comprises the following steps: (1) setting the normal use water temperature T1 of the water heater; (2) when the air conditioner begins to defrost and is in the defrosting process, starting the electronic expansion valve of an air-cooling internal machine to the fixed defrosting step number; (3) detecting the water yielding temperature Tr of the water heater in real time; when Tr is more than or equal to T1, starting the electronic expansion valve of the internal machine of a water heater casing pipe to the fixed defrosting step number; when Tr is less than T1, switching off the electronic expansion valve of the internal machine of the water heater casing pipe to zero; and (4) restoring the normal control of the air conditioner until defrosting is finished. With the method, the water temperature of the water heater can be kept while the external machine of the direct-current variable-frequency air conditioner with the water heater is defrosted.
Description
Technical field:
The present invention relates to field of air conditioning, specifically is a kind of defrosting control method of DC frequency-changing band water heater air conditioner device.
Background technology
The difunctional air-conditioner of many DC frequency-changings has been arranged in the market; Be the air-conditioner of band water heater mostly; These technology are all very ripe, and the difunctional air-conditioner of DC frequency-changing is made up of an outer machine interior machine different with two, and an interior machine is common indoor air-cooled interior machine; Machine is a machine in the water heater sleeve pipe in the another one, is used for water in the heating water heater.
This air-conditioner has a very big defective; Be exactly that outer machine cross valve can commutate to the state of refrigeration, at this moment when machine need defrost outside; The coiler temperature can be very low in the air-cooled interior coiler temperature of DC frequency-changing band water heater air conditioner device and the water heater sleeve pipe; To such an extent as to the water in can't heating water heater causes the hot water in the water heater can be more and more colder along with the passing of defrosting time, influence the user and in the time of defrosting or in a period of time of finishing of defrosting, can't normally use hot water.Particularly when winter temperature was low, because machine all needs work in the air-cooled interior machine of DC frequency-changing band water heater air conditioner device and the water heater sleeve pipe, off-premises station was easy to frosting, so the frequency of defrosting is also very high.If the machine defrosting went out cold water in the time of will causing having a bath outside the user ran into when having a bath, influence the user and use hot water.
Summary of the invention:
The technical problem that the present invention will solve is, overcomes the defective of prior art, can keep the defrosting control method of water heater temperature's DC frequency-changing band water heater air conditioner device when a kind of defrosting of machine outside is provided.
Technical solution of the present invention is, the present invention provides a kind of defrosting control method of DC frequency-changing band water heater air conditioner device, and it may further comprise the steps:
(1), sets the normal use water temperature T 1 of water heater;
(2), when air-conditioning gets into defrosting and in the defrost process, the electric expansion valve of machine in air-cooled is reached fixedly step number of defrosting;
(3), in real time detect the leaving water temperature Tr of water heater, when Tr >=T1, the electric expansion valve of machine in the water heater sleeve pipe is reached fixedly step number of defrosting, when Tr＜T1, close the electric expansion valve of machine in the water heater sleeve pipe zero;
(4), after defrosting finishes, recover the normal control of air-conditioning.
Adopt the method for the invention, have the following advantages:
Adopt the defrosting control method of DC frequency-changing band water heater air conditioner device according to the invention; Can control water heater switch of the electric expansion valve of machine in the water heater sleeve pipe in defrost process according to the leaving water temperature of water heater; Thereby the cold medium flux of machine in the water heater sleeve pipe is flow through in control, when the leaving water temperature of water heater is low, makes just in the water heater sleeve pipe that no refrigerant flows through in the machine; Thereby the water temperature in the water heater is reduced, can keep the water heater temperature when making air-conditioner machine defrosting outside yet.
The specific embodiment:
Below in conjunction with the specific embodiment the present invention is done further detailed explanation.
The present invention provides a kind of defrosting control method of DC frequency-changing band water heater air conditioner device, and it may further comprise the steps:
(1), sets the normal use water temperature T 1 of water heater; In the present embodiment, setting T1 is 50 degree, and these data can be adjusted as required voluntarily;
(2), when air-conditioning gets into defrosting and in the defrost process, the electric expansion valve of machine in air-cooled is reached fixedly step number of defrosting; Electric expansion valve reaches maximum 480 steps of step number when defrosting in the present embodiment; Shorten defrosting time for augmented flow like this; I.e. defrosting fixedly step number was 480 steps; Machine all has electric expansion valve in air-cooled interior machine in the DC frequency-changing band water heater air conditioner device and the water heater sleeve pipe, and these two interior machines all are the flows of controlling refrigerant through electric expansion valve.
(3), in real time detect the leaving water temperature Tr of water heater, when Tr >=T1, the electric expansion valve of machine in the water heater sleeve pipe is reached fixedly step number of defrosting; When Tr＜T1, the electric expansion valve of machine in the water heater sleeve pipe is closed zero, close zero; That is, make in the water heater sleeve pipe that no refrigerant flows through in the machine.
(4), after defrosting finishes, recover the normal control of air-conditioning.
The present invention when the water heater leaving water temperature is higher, can let air-cooled in machine and the water heater sleeve pipe machine all participate in defrosting work, therefore than only let air-cooled in efficient height during machine participation defrosting work, thereby can reduce defrosting time, play energy-conservation effect.
Claims (1)
1. the defrosting control method of a DC frequency-changing band water heater air conditioner device, it is characterized in that: it may further comprise the steps:
(1), sets the normal use water temperature T 1 of water heater;
(2), when air-conditioning gets into defrosting and in the defrost process, the electric expansion valve of machine in air-cooled is reached fixedly step number of defrosting;
(3), in real time detect the leaving water temperature Tr of water heater, when Tr >=T1, the electric expansion valve of machine in the water heater sleeve pipe is reached fixedly step number of defrosting, when Tr＜T1, close the electric expansion valve of machine in the water heater sleeve pipe zero;
(4), after defrosting finishes, recover the normal control of air-conditioning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110180954A CN102313334A (en) | 2011-06-30 | 2011-06-30 | Defrosting control method for direct-current variable-frequency air conditioner with water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110180954A CN102313334A (en) | 2011-06-30 | 2011-06-30 | Defrosting control method for direct-current variable-frequency air conditioner with water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102313334A true CN102313334A (en) | 2012-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110180954A Pending CN102313334A (en) | 2011-06-30 | 2011-06-30 | Defrosting control method for direct-current variable-frequency air conditioner with water heater |
Country Status (1)
| Country | Link |
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| CN (1) | CN102313334A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121290A (en) * | 2019-12-19 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Control method and control device of electronic expansion valve and heat pump water heater |
| CN115096018A (en) * | 2022-05-30 | 2022-09-23 | 浙江中广电器集团股份有限公司 | Defrosting control method of heat pump EVI (evaporative air drying) natural fluorine and ground water multi-split air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453290Y (en) * | 2000-12-01 | 2001-10-10 | 朱伯言 | Air conditioner with water heater |
| CN1560518A (en) * | 2004-02-18 | 2005-01-05 | 广东科龙电器股份有限公司 | Split cold-warm air conditioner combined with water heater |
| JP2007322084A (en) * | 2006-06-02 | 2007-12-13 | Hitachi Appliances Inc | Heat pump water heater |
| JP4078034B2 (en) * | 2001-02-06 | 2008-04-23 | 東芝キヤリア株式会社 | Heat pump water heater |
| CN101532746A (en) * | 2009-04-23 | 2009-09-16 | 东莞市康源节能科技有限公司 | Heat pump-hot water machine set having function of air conditioning and control method thereof |
-
2011
- 2011-06-30 CN CN201110180954A patent/CN102313334A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2453290Y (en) * | 2000-12-01 | 2001-10-10 | 朱伯言 | Air conditioner with water heater |
| JP4078034B2 (en) * | 2001-02-06 | 2008-04-23 | 東芝キヤリア株式会社 | Heat pump water heater |
| CN1560518A (en) * | 2004-02-18 | 2005-01-05 | 广东科龙电器股份有限公司 | Split cold-warm air conditioner combined with water heater |
| JP2007322084A (en) * | 2006-06-02 | 2007-12-13 | Hitachi Appliances Inc | Heat pump water heater |
| CN101532746A (en) * | 2009-04-23 | 2009-09-16 | 东莞市康源节能科技有限公司 | Heat pump-hot water machine set having function of air conditioning and control method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111121290A (en) * | 2019-12-19 | 2020-05-08 | 宁波奥克斯电气股份有限公司 | Control method and control device of electronic expansion valve and heat pump water heater |
| CN111121290B (en) * | 2019-12-19 | 2021-11-09 | 宁波奥克斯电气股份有限公司 | Control method and control device of electronic expansion valve and heat pump water heater |
| CN115096018A (en) * | 2022-05-30 | 2022-09-23 | 浙江中广电器集团股份有限公司 | Defrosting control method of heat pump EVI (evaporative air drying) natural fluorine and ground water multi-split air conditioner |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |