CN201028862Y - Heat pump system using auxiliary cooling coil technology - Google Patents
Heat pump system using auxiliary cooling coil technology Download PDFInfo
- Publication number
- CN201028862Y CN201028862Y CNU2007200506358U CN200720050635U CN201028862Y CN 201028862 Y CN201028862 Y CN 201028862Y CN U2007200506358 U CNU2007200506358 U CN U2007200506358U CN 200720050635 U CN200720050635 U CN 200720050635U CN 201028862 Y CN201028862 Y CN 201028862Y
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- outdoor
- cooling coil
- heat exchanger
- secondary cooling
- compressor
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Abstract
The utility model provides a heat pump system using the technology of auxiliary cooling pipe coil which comprises an indoor machine and an outdoor machine. The indoor machine comprises at least an indoor machine and a throttling component connected with the indoor machine. The outdoor machine comprises a liquid storing pot, an outdoor heat exchanger component, a four-way valve and a compressor part. Every part is connected through a pipeline to form integrated refrigerant circulation circuit. The outdoor heat exchanger component is in series consists of an outdoor heat exchanger, an outdoor throttling device and an auxiliary pipe coil. The other end of the outdoor heat exchanger is connected with the A terminal of the four-way valve. The other end of the auxiliary cooling pipe coil is connected with the liquid storing pot. When the outdoor machine makes heat, the refrigerant through the auxiliary cooling pipe coil only passes through the indoor throttling component with high temperature and is unlikely to frost. Simultaneously, when the indoor machine refrigerates, the refrigerant firstly passes through the outdoor heat exchanger to have heat exchange and then cools further through the auxiliary cooling pipe coil to increase the condensate depression of the system.
Description
Technical field
The utility model relates to air-conditioning technical field, particularly a kind of heat pump that uses secondary cooling coil technology.
Background technology
The present general outdoor heat exchanger of going up the air-out structure that adopts of the off-premises station of air-conditioning system, the air quantity that adopts the bottom of the outdoor heat exchanger of this air-out structure to obtain is less, and when air-conditioning system was carried out heating operation, the bottom of outdoor heat exchanger was easy to frosting.And when the condensed water of the generation in the process of heating can't smooth and easy discharge, be easy to cause the outdoor heat exchanger bottom to freeze, can't carry out normal defrost, thereby influence the heating effect of system.When existing air-conditioning system is carried out heating operation, cold-producing medium is after the throttling for the first time of indoor restricting element, then by the outside restricting element, the inlet chamber external heat exchanger carries out heat exchange, this moment since cold-producing medium through twice throttling, temperature is lower, and the air quantity that outdoor heat exchanger bottom obtains is little, very easily cause outdoor heat exchanger bottom frosting, thereby influence the heating performance of system.Therefore need develop and a kind ofly adopt air-out structure outdoor heat exchanger and effectively prevent the icing heat pump in outdoor heat exchanger bottom.
The utility model content
The purpose of this utility model provides a kind of heat pump that uses secondary cooling coil technology, and this system can prevent outdoor heat exchanger bottom frosting effectively when heating, thus the heating effect of the system of assurance.
The purpose of this utility model is achieved by the following technical solution:
Use the heat pump of secondary cooling coil technology, comprise indoor units and outdoor unit, described indoor units comprises at least one indoor set and the restricting element that is connected with this indoor set, described outdoor unit comprises fluid reservoir, the outdoor heat exchanger assembly, cross valve, compressor part, each parts connect to form complete refrigerant circulation loop by pipeline, described outdoor heat exchanger assembly is by outdoor heat exchanger, outdoor throttling arrangement and secondary cooling coil compose in series, the outdoor heat exchanger other end is connected with the end of cross valve A, and the secondary cooling coil other end is connected with fluid reservoir.
Its second is characterised in that: described secondary cooling coil is positioned at the outdoor heat exchanger bottom.
Its 3rd is characterised in that: described outdoor throttling arrangement comprises device for drying and filtering, outdoor check valve, electric expansion valve and filter, described device for drying and filtering, outdoor check valve compose in series first assembly, described electric expansion valve, filter compose in series second assembly, and first assembly and second assembly are connected in parallel again.
Its 4th is characterised in that: described compressor part comprises constant speed compressor and digital compressor, described constant speed compressor is connected with digital compressor parallel, the gas outlet of above-mentioned two compressors is connected to the B end of cross valve, and air entry is connected to the D end of cross valve.
Its 5th is characterised in that: the gas outlet of described constant speed compressor and digital compressor is connected the B end that is connected to cross valve behind oil eliminator and the check valve respectively.
Its 6th is characterised in that: the air entry of described constant speed compressor and digital compressor has been connected the D end that is connected to cross valve behind the same vapour separator.
The utility model has changed traditional mode of utilizing to outdoor heat exchanger, with the coil pipe of the least significant end position of outdoor heat exchanger as secondary cooling coil, when indoor set heats, cold-producing medium through indoor restricting element first throttle after, intermediate pressure state with system enters secondary cooling coil part, and then through outdoor throttling arrangement inlet chamber external heat exchanger, higher relatively at the pipe temperature of outdoor heat exchanger bottom like this, be not easy frosting, guaranteed the heating effect of unit.
Outdoor heat exchanger is divided into two parts, and when indoor set heated, the cold-producing medium of the secondary cooling coil of flowing through was only through indoor restricting element throttling, and temperature is higher relatively, is not easy frosting; In the indoor set refrigeration, cold-producing medium carries out heat exchange through outdoor heat exchanger earlier simultaneously, further cooling off through secondary cooling coil, can increase the degree of supercooling of system so again then.
Description of drawings:
Fig. 1 is a connection diagram of using the heat pump of secondary cooling coil technology among the utility model embodiment 1.
The specific embodiment
First embodiment
The heat pump of the secondary cooling coil technology of use as shown in Figure 1 comprises indoor units and outdoor unit, and described indoor units comprises at least one indoor set and the restricting element that is connected with this indoor set.Described outdoor unit comprises fluid reservoir 1, outdoor heat exchanger assembly, cross valve 2, compressor part, each parts connect to form complete refrigerant circulation loop by pipeline, described outdoor heat exchanger assembly is composed in series by outdoor heat exchanger 3, outdoor throttling arrangement and secondary cooling coil 4, outdoor heat exchanger 3 other ends are connected with the A end of cross valve 2, secondary cooling coil 4 other ends are connected with fluid reservoir 1, and described secondary cooling coil 4 is positioned at outdoor heat exchanger 3 bottoms.
Described in the present embodiment outdoor throttling arrangement comprises device for drying and filtering 5, outdoor check valve 6, electric expansion valve 7 and filter 8, described device for drying and filtering 5, outdoor check valve 6 compose in series first assembly, described electric expansion valve 7, filter 8 compose in series second assembly, first assembly and second assembly are connected in parallel again, described compressor part comprises constant speed compressor 9 and digital compressor 10, and described constant speed compressor 9 and digital compressor 10 are connected in parallel.The gas outlet of described constant speed compressor and digital compressor is connected the B end that is connected to cross valve behind oil eliminator and the check valve respectively.What constant speed compressor 9 connected is first oil eliminator 11 and first check valve 13, and what digital compressor 10 connected is second oil eliminator 12 and second check valve 14.The air entry of described constant speed compressor 9 and digital compressor 10 has been connected the D end that is connected to cross valve 2 behind the same vapour separator 15.
Further instruction, indoor set has two in the present embodiment, be respectively first indoor set 16, second indoor set 17 they be connected with first throttle element 18, second restricting element 19 respectively.
Introduce the course of work of the heat pump of the secondary cooling coil technology of use that the utility model relates to below.
When indoor set carries out refrigeration work, after cold-producing medium compresses through compressor part, carry out heat exchange through oil eliminator, check valve, cross valve 2 back inlet chamber external heat exchangers 3 with outside air, enter secondary cooling coil 4 through behind the outdoor throttling arrangement then, in secondary cooling coil 4, further enter fluid reservoir 1 after the cooling, can increase unit degree of supercooling herein like this.Cold-producing medium flows out from fluid reservoir 1, carries out heat exchange through machine and room air in the inlet chamber behind the indoor restricting element, is sucked by the compressor air entry through cross valve 2, vapour separator 15 backs then, is participated in circulation next time by compressor compression back.
When indoor set heats work, after cold-producing medium compresses through compressor part, through oil eliminator, check valve, machine and room air carry out heat exchange in the cross valve 2 back inlet chambers, enter fluid reservoir 1 through behind the indoor restricting element then, this moment, cold-producing medium was only through indoor restricting element throttling, it is subcooled liquid with intermediate pressure, be in the intermediate pressure of whole system and the state of temperature, cold-producing medium flows out from fluid reservoir 1 then, through secondary cooling coil 4, inlet chamber external heat exchanger 3 carries out heat exchange with outside air behind the outdoor throttling arrangement, because secondary cooling coil 4 is positioned at the bottom of outdoor heat exchanger 3, the cold-producing medium in the secondary cooling coil 4 of flowing through has the pressure and temperature in the middle of the system, therefore secondary cooling coil 4 can frosting and is frozen, and how no matter whole system can keep good heating effect under the abominable operating mode.Cold-producing medium is sucked by the compressor air entry through cross valve 2, vapour separator 15 backs successively through behind the outdoor heat exchanger 3, is participated in circulation next time by compressor compression back.
The applicant has introduced structure of the present utility model by above embodiment, the utility model also has some more conspicuous to one skilled in the art distortion, as the increase of indoor heat exchanger number together with the throttling arrangement of connecting with it, but the change of essence does not take place in the total of complete machine; Also have the common replacement of described throttling arrangement and increase branch road in parallel; Indoor and outdoor heat exchangers in parallel or series connection etc.Therefore, under inspiration of the present utility model, the conspicuous distortion that those skilled in the art makes all should fall within the protection domain of the present utility model.
Claims (6)
1. use the heat pump of secondary cooling coil technology, comprise indoor units and outdoor unit, described indoor units comprises at least one indoor set and the restricting element that is connected with this indoor set, it is characterized in that: described outdoor unit comprises fluid reservoir (1), the outdoor heat exchanger assembly, cross valve (2), compressor part, each parts connect to form complete refrigerant circulation loop by pipeline, described outdoor heat exchanger assembly is by outdoor heat exchanger (3), outdoor throttling arrangement and secondary cooling coil (4) compose in series, outdoor heat exchanger (3) other end is connected with the A end of cross valve (2), and secondary cooling coil (4) other end is connected with fluid reservoir (1).
2. the heat pump of the secondary cooling coil technology of use according to claim 1 is characterized in that: described secondary cooling coil (4) is positioned at outdoor heat exchanger (3) bottom.
3. the heat pump of the secondary cooling coil technology of use according to claim 1, it is characterized in that: described outdoor throttling arrangement comprises device for drying and filtering (5), outdoor check valve (6), electric expansion valve (7) and filter (8), described device for drying and filtering (5), outdoor check valve (6) compose in series first assembly, described electric expansion valve (7), filter (8) compose in series second assembly, and first assembly and second assembly are connected in parallel again.
4. the heat pump of the secondary cooling coil technology of use according to claim 1, it is characterized in that: described compressor part comprises constant speed compressor (9) and digital compressor (10), described constant speed compressor (9) and digital compressor (10) are connected in parallel, the gas outlet of above-mentioned two compressors is connected to the B end of cross valve (2), and air entry is connected to the D end of cross valve (2).
5. the heat pump of the secondary cooling coil technology of use according to claim 4 is characterized in that: the gas outlet of described constant speed compressor (9) and digital compressor (10) is connected the B end that is connected to cross valve (2) behind oil eliminator and the check valve respectively.
6. the heat pump of the secondary cooling coil technology of use according to claim 4 is characterized in that: the air entry of described constant speed compressor (9) and digital compressor (10) has been connected the D end that is connected to cross valve (2) behind the same vapour separator (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506358U CN201028862Y (en) | 2007-04-18 | 2007-04-18 | Heat pump system using auxiliary cooling coil technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200506358U CN201028862Y (en) | 2007-04-18 | 2007-04-18 | Heat pump system using auxiliary cooling coil technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028862Y true CN201028862Y (en) | 2008-02-27 |
Family
ID=39133077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200506358U Expired - Lifetime CN201028862Y (en) | 2007-04-18 | 2007-04-18 | Heat pump system using auxiliary cooling coil technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028862Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605818A (en) * | 2015-12-10 | 2016-05-25 | 张贝 | Double-working-condition air conditioner |
-
2007
- 2007-04-18 CN CNU2007200506358U patent/CN201028862Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605818A (en) * | 2015-12-10 | 2016-05-25 | 张贝 | Double-working-condition air conditioner |
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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 |
Granted publication date: 20080227 |
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| CX01 | Expiry of patent term |