CN106440027B - Fixed frequency one-driving-two air conditioning unit - Google Patents
Fixed frequency one-driving-two air conditioning unit Download PDFInfo
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- CN106440027B CN106440027B CN201610770532.2A CN201610770532A CN106440027B CN 106440027 B CN106440027 B CN 106440027B CN 201610770532 A CN201610770532 A CN 201610770532A CN 106440027 B CN106440027 B CN 106440027B
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- fixed
- coil
- frequency compressor
- normally closed
- closed contact
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
Abstract
The invention discloses a fixed-frequency one-driving-two air conditioning unit, wherein two fixed-frequency compressors and a fan (10) are arranged in an external unit of the fixed-frequency one-driving-two air conditioning unit; a live wire end (8) of the first fixed-frequency compressor (7) is connected with a zero line end (9) of the first fixed-frequency compressor through a second normally closed contact (5) and the first coil (1); the second normally closed contact (5) is connected with a fan (10) through one first normally open contact (3), and the fan (10) is connected with a zero line end (9) of the first constant-frequency compressor (7) through the other first normally open contact (3); a live wire end (8) of the second fixed-frequency compressor (11) is connected with a zero line end (9) of the second fixed-frequency compressor through the first normally closed contact (2) and the second coil (4); the first normally closed contact (2) is connected with the fan (10) through a second normally open contact (6), and the fan (10) is connected with a zero line end (9) of a second constant-frequency compressor (11) through another second normally open contact (6). The unit can realize the interlocking of the two compressors.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to a fixed-frequency one-drive-two air conditioning unit.
Background
The common fixed-frequency air conditioner comprises an outer unit and an inner unit, wherein a compressor and a fan are arranged in the outer unit. Thus, if two internal machines are to be driven, two external machines are generally required. However, the price competition in the domestic air conditioning industry is becoming more and more popular, and the cost is controlled to the extent that the rhenium is necessary. Therefore, in order to control the cost, it is naturally proposed that one external unit is used for dragging two internal units, two fixed-frequency compressors, one heat exchanger and one fan are arranged in the external unit, the two compressors are respectively and independently powered by the two internal units, and the two compressors share the heat exchanger and the fan, so that the purposes of reducing the cost and reducing the size of the external unit are achieved.
However, the above assumption has a key technical problem, namely how to realize the control and interlocking of the two compressor circuits of the external unit, because the compressor and the fan can operate normally when any one internal unit is opened and power is supplied to the corresponding compressor in the traditional control mode, but if the two internal units are opened simultaneously and power is supplied to the two compressors, a zero-fire line of the fan is short-circuited to cause the machine to drop.
Disclosure of Invention
The invention aims to solve the technical problem of providing a fixed-frequency one-drive-two air conditioning unit which can realize the interlocking of two compressors, ensure that the compressors and a fan can normally work no matter one indoor unit is singly opened or two indoor units are simultaneously opened, avoid short circuit and reduce the cost.
The technical solution of the present invention is to provide a fixed frequency one-drive-two air conditioning unit with the following structure, which comprises a first inner machine and a second inner machine,
the unit also comprises an external machine, wherein a first fixed-frequency compressor, a second fixed-frequency compressor, a heat exchanger and a fan for exchanging heat with the heat exchanger are arranged in the external machine shell; the two fixed-frequency compressors share the heat exchanger, and a first heat exchange coil and a second heat exchange coil are arranged in the heat exchanger; the first fixed-frequency compressor, the first heat exchange coil and the first inner machine form a first refrigerant circulation loop, and the second fixed-frequency compressor, the second heat exchange coil and the second inner machine form a second refrigerant circulation loop; the two internal machines respectively supply power to the corresponding fixed-frequency compressors;
the control circuit of the outdoor unit comprises a first relay and a second relay, wherein the first relay comprises a first coil, a first normally closed contact and two first normally open contacts, and the second relay comprises a second coil, a second normally closed contact and two second normally open contacts;
the fire wire end of the first constant-frequency compressor is connected with the inlet side of the second normally closed contact, the outlet side of the second normally closed contact is connected with the inlet end of the first coil, and the outlet end of the first coil is connected with the zero wire end of the first constant-frequency compressor; the outlet side of the second normally closed contact is also connected with the inlet end of the fan through a first normally open contact, and the leading-out end of the fan is connected with the zero line end of the first fixed-frequency compressor through another first normally open contact;
the fire wire end of the second constant-frequency compressor is connected with the inlet side of the first normally closed contact, the outlet side of the first normally closed contact is connected with the inlet end of the second coil, and the outlet end of the second coil is connected with the zero wire end of the second constant-frequency compressor; the outlet side of the first normally closed contact is connected with the inlet end of the fan through a second normally open contact, and the leading-out end of the fan is connected with the zero line end of the second fixed-frequency compressor through another second normally open contact.
The operation of the control circuit is analyzed in three conditions. Of course, the working principle of the relay is explained first, and when the coil of the relay is electrified, the normally open contact of the relay closes the circuit and the normally closed contact opens the circuit.
Situation one, first indoor set is the start alone, and supply power alone to the zero line terminal of first constant frequency compressor, thus, first coil is electrified and the second coil electroless, first normally closed contact and two second normally open contacts are all disconnected, second normally closed contact and two first normally open contacts are all closed, and the electric current is from the fire line terminal of first constant frequency compressor through second normally closed contact, the incoming end of a first normally open contact arrival fan, draw forth the end by the fan again and get back to first constant frequency compressor zero line terminal through another first normally open contact, first constant frequency compressor and fan all are electrified normal work promptly.
Situation two, the second indoor set is the start alone, and supply power alone to the zero live wire end of second constant frequency compressor, thus, the second coil gets electric and first coil electroless, first normally closed contact and two second normally open contacts are all closed, second normally closed contact and two first normally open contacts are all broken off, and the electric current is from the live wire end of second constant frequency compressor through first normally closed contact, the incoming end of a second normally open contact arrival fan, draw forth the end from the fan again and get back to the zero line end of second constant frequency compressor through another second normally open contact, second constant frequency compressor and fan all get electric normal work promptly.
Situation three, two internal machines are all opened, the zero line of two constant frequency compressors all receives the electricity, if the zero line of first constant frequency compressor received the electricity earlier, then the electric current reachd first coil through second normally closed contact earlier, lead to the disconnection of first normally closed contact, ensure that the second coil can not receive the electricity, so under this state, two compressors all normally received the electricity work, and first normally closed contact and two second normally open contacts all break off, second normally closed contact and two first normally open contacts are all closed, and the electric current is from the live wire end of first constant frequency compressor through second normally closed contact, the incoming end of a first normally open contact arrival fan, get back to first constant frequency compressor zero line through another first normally open contact by the end of drawing forth of fan again.
Of course, if the third state is that the zero line and the live line of the second constant-frequency compressor are powered first, the two compressors are powered normally to work, and the current reaches the inlet end of the fan from the live line end of the second compressor through the first normally closed contact and the second normally open contact and then returns to the zero line end of the second constant-frequency compressor from the outlet end of the fan through the other second normally open contact.
In conclusion, the control circuit realizes the interlocking of the two compressors, ensures that the compressors and the fan can normally work and avoid short circuit no matter one indoor unit is singly opened or two indoor units are simultaneously opened, solves the technical problem which troubles the industry for many years, and effectively prevents the condition that the fan is burnt out due to short circuit. Moreover, the outer machine of the machine set does not need to be additionally powered, the power supply and control of the inner machine are completely realized, the installation difficulty is simplified, the outer machine is not provided with a control board any more, the cost is reduced, and the circuit control process is stable and reliable. Moreover, the two compressors share one set of heat exchanger and fan, so that the manufacturing cost of the unit is further reduced, and the overall volume of the external unit is reduced.
Drawings
Fig. 1 is a schematic diagram of a control circuit of an external unit of a fixed frequency one-drive-two air conditioning unit according to the present invention.
Fig. 2 is a schematic diagram of the system structure of the fixed-frequency one-driving-two air conditioning unit of the invention.
The heat exchanger comprises a first coil, a second coil, a first normally closed contact, a first normally open contact, a second coil, a second normally closed contact, a second normally open contact, a first constant-frequency compressor, a fire wire end, a zero wire end, a fan, a second constant-frequency compressor, a heat exchanger, a first heat exchange coil, a second heat exchange coil, a first indoor unit, a second heat exchange coil, a second indoor unit and a heat exchanger, wherein the first coil, the second normally closed contact, the first normally open contact, the second coil, the first heat exchange coil, the second heat exchange coil, the first indoor unit, the second heat exchange coil, the second heat exchanger and the first heat exchange coil are shown in the figure.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to fig. 1 and 2, the fixed frequency one-driving-two air conditioning unit of the present invention includes a first inner unit 15, a second inner unit 16 and an outer unit.
The outer shell is internally provided with a first fixed-frequency compressor 7, a second fixed-frequency compressor 11, a heat exchanger 12 and a fan 10 for exchanging heat with the heat exchanger 12. The two fixed-frequency compressors share the heat exchanger 12, and specifically, the heat exchanger 12 is internally provided with a first heat exchange coil 13 and a second heat exchange coil 14; the first fixed-frequency compressor 7, the first heat exchange coil 13 and the first indoor unit 15 form a first refrigerant circulation loop, and the second fixed-frequency compressor 11, the second heat exchange coil 14 and the second indoor unit 16 form a second refrigerant circulation loop; the two heat exchange coils are integrated in the same heat exchanger 12 in a staggered and winding mode, and the same fan 10 supplies power to the two heat exchange coils.
The two internal machines respectively supply power to the corresponding fixed-frequency compressors. Specifically, each indoor unit leads out a zero-live wire to be connected with a zero-live wire end of the corresponding fixed-frequency compressor, an on-off switch is arranged on a connecting circuit, and the on-off switch is controlled by a control panel of the indoor unit.
This control circuit of outer machine includes first relay and second relay, and first relay includes a first coil 1, a first normally closed contact 2 and two first normally open contacts 3, and the second relay includes a second coil 4, a second normally closed contact 5 and two second normally open contacts 6.
A fire wire end 8 of the first fixed-frequency compressor 7 is connected with an inlet side of the second normally closed contact 5, an outlet side of the second normally closed contact 5 is connected with an inlet end of the first coil 1, and an outlet end of the first coil 1 is connected with a zero wire end 9 of the first fixed-frequency compressor 7; the outlet side of the second normally closed contact 5 is also connected with the inlet end of the fan 10 through a first normally open contact 3, and the leading-out end of the fan 10 is connected with the zero line end 9 of the first constant-frequency compressor 7 through another first normally open contact 3.
A fire wire end 8 of a second fixed-frequency compressor 11 is connected with an inlet side of a first normally closed contact 2, an outlet side of the first normally closed contact 2 is connected with an inlet end of a second coil 4, and an outlet end of the second coil 4 is connected with a zero wire end 9 of the second fixed-frequency compressor 11; the outlet side of the first normally closed contact 2 is connected with the inlet end of a fan 10 through a second normally open contact 6, and the leading-out end of the fan 10 is connected with the zero line end 9 of a second constant-frequency compressor 11 through another second normally open contact 6.
Claims (1)
1. The utility model provides a fixed frequency one drags two air conditioning unit, it includes first interior machine (15) and second interior machine (16), its characterized in that:
the unit also comprises an external machine, wherein a first fixed-frequency compressor (7), a second fixed-frequency compressor (11), a heat exchanger (12) and a fan (10) for exchanging heat with the heat exchanger (12) are arranged in the external machine shell; the two fixed-frequency compressors share the heat exchanger (12), and a first heat exchange coil (13) and a second heat exchange coil (14) are arranged in the heat exchanger (12); the first fixed-frequency compressor (7), the first heat exchange coil (13) and the first indoor unit (15) form a first refrigerant circulation loop, and the second fixed-frequency compressor (11), the second heat exchange coil (14) and the second indoor unit (16) form a second refrigerant circulation loop; the two internal machines respectively supply power to the corresponding fixed-frequency compressors;
the control circuit of the outdoor unit comprises a first relay and a second relay, wherein the first relay comprises a first coil (1), a first normally closed contact (2) and two first normally open contacts (3), and the second relay comprises a second coil (4), a second normally closed contact (5) and two second normally open contacts (6);
a fire wire end (8) of the first constant-frequency compressor (7) is connected with an inlet side of the second normally closed contact (5), an outlet side of the second normally closed contact (5) is connected with an inlet end of the first coil (1), and an outlet end of the first coil (1) is connected with a zero wire end (9) of the first constant-frequency compressor (7); the outlet side of the second normally closed contact (5) is also connected with the inlet end of a fan (10) through a first normally open contact (3), and the leading-out end of the fan (10) is connected with the zero line end (9) of the first fixed-frequency compressor (7) through another first normally open contact (3);
a live wire end (8) of the second constant-frequency compressor (11) is connected with an inlet side of the first normally closed contact (2), an outlet side of the first normally closed contact (2) is connected with an inlet end of the second coil (4), and an outlet end of the second coil (4) is connected with a null wire end (9) of the second constant-frequency compressor (11); the outlet side of the first normally closed contact (2) is connected with the inlet end of a fan (10) through a second normally open contact (6), and the leading-out end of the fan (10) is connected with the zero line end (9) of a second constant-frequency compressor (11) through another second normally open contact (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610770532.2A CN106440027B (en) | 2016-08-30 | 2016-08-30 | Fixed frequency one-driving-two air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610770532.2A CN106440027B (en) | 2016-08-30 | 2016-08-30 | Fixed frequency one-driving-two air conditioning unit |
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| Publication Number | Publication Date |
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| CN106440027A CN106440027A (en) | 2017-02-22 |
| CN106440027B true CN106440027B (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610770532.2A Active CN106440027B (en) | 2016-08-30 | 2016-08-30 | Fixed frequency one-driving-two air conditioning unit |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110118422B (en) * | 2018-02-07 | 2021-07-13 | 台达电子工业股份有限公司 | Air conditioning system and operation method thereof |
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| CN2551903Y (en) * | 2002-04-16 | 2003-05-21 | 张荣德 | Split-type air-conditioner |
| CN2752658Y (en) * | 2004-12-07 | 2006-01-18 | Tcl集团股份有限公司 | Single-cooling one with two air conditioner outdoor machine control circuit |
| CN101109588A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | One-master-driving-two air conditioner refrigerating system with constant frequency |
| JP2010206891A (en) * | 2009-03-02 | 2010-09-16 | Nippon Sharyo Seizo Kaisha Ltd | Erroneous operation preventing device for engine generator |
| CN204739817U (en) * | 2015-06-01 | 2015-11-04 | 广东芬尼克兹节能设备有限公司 | Dual system heat pump set evaporates control system |
| CN205980040U (en) * | 2016-08-30 | 2017-02-22 | 宁波奥克斯电气股份有限公司 | Decide one to drag two air conditioning unit frequently |
-
2016
- 2016-08-30 CN CN201610770532.2A patent/CN106440027B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2551903Y (en) * | 2002-04-16 | 2003-05-21 | 张荣德 | Split-type air-conditioner |
| CN2752658Y (en) * | 2004-12-07 | 2006-01-18 | Tcl集团股份有限公司 | Single-cooling one with two air conditioner outdoor machine control circuit |
| CN101109588A (en) * | 2006-07-19 | 2008-01-23 | 乐金电子(天津)电器有限公司 | One-master-driving-two air conditioner refrigerating system with constant frequency |
| JP2010206891A (en) * | 2009-03-02 | 2010-09-16 | Nippon Sharyo Seizo Kaisha Ltd | Erroneous operation preventing device for engine generator |
| CN204739817U (en) * | 2015-06-01 | 2015-11-04 | 广东芬尼克兹节能设备有限公司 | Dual system heat pump set evaporates control system |
| CN205980040U (en) * | 2016-08-30 | 2017-02-22 | 宁波奥克斯电气股份有限公司 | Decide one to drag two air conditioning unit frequently |
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| CN106440027A (en) | 2017-02-22 |
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