CN203443187U - Air conditioning unit - Google Patents
Air conditioning unit Download PDFInfo
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- CN203443187U CN203443187U CN201320468987.0U CN201320468987U CN203443187U CN 203443187 U CN203443187 U CN 203443187U CN 201320468987 U CN201320468987 U CN 201320468987U CN 203443187 U CN203443187 U CN 203443187U
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- expansion valve
- heat exchanger
- compressor
- conditioning unit
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Abstract
The utility model provides an air conditioning unit, which comprises a compressor, a second heat exchanger and a first heat exchanger which are respectively connected to the compressor, a first connection pipe which is connected to the first heat exchanger and the second heat exchanger, and a first expansion valve, an economizer and a second expansion valve which are serially connected onto the first connection pipe, wherein the compressor is a two-stage compressor or a multi-stage compressor, and is connected with the economizer, the first expansion valve is arranged between the first heat exchanger and the economizer, and the second expansion valve is arranged between the second heat exchanger and the economizer. The air conditioning unit also comprises a second connection pipe and a third expansion valve, the second connection pipe is used for connecting the second heat exchanger with the first heat exchanger, and the third expansion valve is in serial connection with the second connection pipe and is adjustable. According to the air conditioning unit, the adjustment of the air conditioning unit can be realized by only adjusting the third expansion valve, a refrigerant can directly reach the second heat exchanger (the first heat exchanger) after passing the third expansion valve, the adjusting speed can be improved, and the running performance of the air conditioning unit can be enhanced. The utility model also provides another air conditioning unit.
Description
Technical field
The utility model relates to air-conditioning technical field, more particularly, relates to a kind of air-conditioning unit.
Background technology
Along with scientific and technological progress, heat pump performance improves gradually.At present, in order to promote cycle efficieny, adopt and have intercooled two-stage or multi-stage compression, middle cooling common employing economizer (or flash evaporation) is realized.Take two stages of compression kind of refrigeration cycle as example, as shown in Figure 1, on the first pipeline that connects condenser and evaporimeter, economizer (or flash evaporation) is set, the gas outlet of economizer (or flash evaporation) is connected with the secondary import of compressor, be serially connected with on the first pipeline and be positioned at the first expansion valve between economizer (or flash evaporation) and condenser, be serially connected with on the first pipeline and be positioned at the second expansion valve between economizer (or flash evaporation) and evaporimeter.As shown in Figure 2, high-pressure liquid refrigerant from condenser passes through the first expansion valve reducing pressure by regulating flow to state point 6, enter economizer (or flash evaporation), in economizer (or flash evaporation), gaseous coolant is separated from liquid refrigerants, gaseous coolant enters compressor, saturated liquid refrigerants to state point 8, enters evaporimeter by the second expansion valve reducing pressure by regulating flow.
When air-conditioning unit load changes, obviously, need to regulate the first expansion valve and the second expansion valve.But in adjustment process, refrigerant need to pass through economizer (or flash evaporation) just can reach evaporimeter (condenser), causes governing speed slower, makes the runnability of air-conditioning unit lower.
In addition, when air-conditioning unit load changes, need to regulate two expansion valves, make the control system of this air-conditioning unit more responsible, be prone to problem.
In sum, how improving governing speed, to improve the runnability of air-conditioning unit, is current those skilled in the art's problem demanding prompt solution.
Utility model content
The purpose of this utility model is to provide a kind of air-conditioning unit, to improve governing speed, and then the runnability of raising air-conditioning unit.
To achieve these goals, the utility model provides following technical scheme:
A kind of air-conditioning unit, comprise compressor, the second heat exchanger and the First Heat Exchanger that are connected with described compressor respectively, connect the first tube connector of described First Heat Exchanger and described the second heat exchanger, is serially connected with the first expansion valve, economizer and the second expansion valve on described the first tube connector; Wherein, described compressor is split-compressor or compound compressor, described economizer is connected with described compressor, and described the first expansion valve is between described First Heat Exchanger and described economizer, and described the second expansion valve is between described the second heat exchanger and described economizer; This air-conditioning unit also comprises:
The second tube connector that connects described the second heat exchanger and described First Heat Exchanger;
Be serially connected with described the second tube connector and adjustable the 3rd expansion valve.
Preferably, in above-mentioned air-conditioning unit, described the first expansion valve and described the second expansion valve are fixed expansion valve.
Preferably, in above-mentioned air-conditioning unit, described the first expansion valve and described the second expansion valve are fixed restriction orifice plate.
Preferably, in above-mentioned air-conditioning unit, described the 3rd expansion valve is electric expansion valve.
Preferably, in above-mentioned air-conditioning unit, described compressor is split-compressor, and the gas outlet of described economizer is connected with the secondary air inlet of described compressor.
Preferably, in above-mentioned air-conditioning unit, described compressor is three-stage blower, and described economizer is secondary economizer, the one-level gas outlet of described economizer is connected with the secondary air inlet of described compressor, and the secondary gas outlet of described economizer is connected with three grades of air inlets of described compressor.
The air-conditioning unit that the utility model provides, by setting up the second tube connector that connects First Heat Exchanger and the second heat exchanger, and on the second tube connector, be connected in series the 3rd expansion valve, the 3rd expansion valve is adjustable, refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need to could arrive the second heat exchanger (or First Heat Exchanger) through economizer with prior art refrigerant compares, obviously, reach regulating effect very fast, thereby improved governing speed, and then improved the runnability of this air-conditioning unit.
Simultaneously, the air-conditioning unit that the utility model provides, only by regulating the 3rd expansion valve, can realize the adjusting of this air-conditioning unit, without regulating again the first expansion valve and the second expansion valve, need to regulate two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, reduce controlled plant, simplified the control system of this air-conditioning unit, improved the reliability of this air-conditioning unit.
The air-conditioning unit providing based on above-described embodiment, the utility model also provides another kind of air-conditioning unit, this air-conditioning unit, comprise compressor, the second heat exchanger and the First Heat Exchanger that are connected with described compressor respectively, the first tube connector that connects described First Heat Exchanger and described the second heat exchanger, is serially connected with the first expansion valve, flash evaporation and the second expansion valve on described the first tube connector; Wherein, described compressor is split-compressor or compound compressor, described flash evaporation is connected with described compressor, and described the first expansion valve is between described First Heat Exchanger and described flash evaporation, and described the second expansion valve is between described the second heat exchanger and described flash evaporation; Described air-conditioning unit also comprises:
The second tube connector that connects described the second heat exchanger and described First Heat Exchanger;
Be serially connected with described the second tube connector and adjustable the 3rd expansion valve.
Preferably, in above-mentioned air-conditioning unit, described the first expansion valve and described the second expansion valve are fixed expansion valve.
Preferably, in above-mentioned air-conditioning unit, described the first expansion valve and described the second expansion valve are fixed restriction orifice plate.
Preferably, in above-mentioned air-conditioning unit, described the 3rd expansion valve is electric expansion valve.
Preferably, in above-mentioned air-conditioning unit, described compressor is split-compressor, and the gas outlet of described flash evaporation is connected with the secondary air inlet of described compressor.
Preferably, in above-mentioned air-conditioning unit, described compressor is three-stage blower, and described flash evaporation is secondary flash evaporation, the one-level gas outlet of described flash evaporation is connected with the secondary air inlet of described compressor, and the secondary gas outlet of described flash evaporation is connected with three grades of air inlets of described compressor.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The structured flowchart of the air-conditioning unit that Fig. 1 provides for prior art;
The theoretical refrigeration cyclic graph of the air-conditioning unit that Fig. 2 provides for prior art;
The structured flowchart of the air-conditioning unit that Fig. 3 provides for the utility model embodiment;
The another kind of structured flowchart of the air-conditioning unit that Fig. 4 provides for the utility model embodiment;
The theoretical refrigeration cyclic graph of the air-conditioning unit that Fig. 5 provides for the utility model embodiment.
The specific embodiment
The utility model embodiment provides a kind of air-conditioning unit, has improved governing speed, and then has improved the runnability of this air-conditioning unit.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 3, the air-conditioning unit that the utility model embodiment provides, comprise compressor, the second heat exchanger and the First Heat Exchanger that are connected with compressor respectively, the first tube connector that connects First Heat Exchanger and the second heat exchanger, is serially connected with the first expansion valve, economizer and the second expansion valve on the first tube connector; Wherein, compressor is split-compressor or compound compressor, and economizer is connected with compressor, and the first expansion valve is between First Heat Exchanger and economizer, and the second expansion valve is between the second heat exchanger and economizer; This air-conditioning unit also comprises: the second tube connector that connects the second heat exchanger and First Heat Exchanger; Be serially connected with the second tube connector and adjustable the 3rd expansion valve.
As shown in Figure 5, the Principles of Regulation of the air-conditioning unit that the utility model embodiment provides are (take and freeze as example): the high-pressure liquid refrigerant from First Heat Exchanger is divided into two-way, flow through respectively the first tube connector and the second tube connector, that flows through the first tube connector leads up to the first expansion valve reducing pressure by regulating flow to state point 6, enter economizer, in economizer, gaseous coolant is separated from liquid refrigerants, and saturated liquid refrigerants to state point 8, enters the second heat exchanger through the second expansion valve throttling; Flowing through, the second tube connector Yi road is direct passes through the 3rd expansion valve throttling to state point 8 ', enters the second heat exchanger.By regulating the aperture of the 3rd expansion valve, directly regulate and from First Heat Exchanger, through the second tube connector, flow to the cold medium flux of the second heat exchanger, controlled the state of state point 8 ', simultaneously also indirect regulation from First Heat Exchanger, through the first tube connector, flow to the cold medium flux of the second heat exchanger, controlled the state of state point 8, only by regulating the 3rd expansion valve to realize, regulate First Heat Exchanger to flow to the cold medium flux of the second heat exchanger, thereby can meet regulatory demand.
The air-conditioning unit that the utility model embodiment provides, by setting up the second tube connector that connects First Heat Exchanger and the second heat exchanger, and on the second tube connector, be connected in series the 3rd expansion valve, the 3rd expansion valve is adjustable, refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need to could arrive the second heat exchanger (or First Heat Exchanger) through economizer with prior art refrigerant compares, obviously, reach regulating effect very fast, thereby improved governing speed, and then improved the runnability of this air-conditioning unit.
Simultaneously, the air-conditioning unit that the utility model embodiment provides, only by regulating the 3rd expansion valve, can realize the adjusting of this air-conditioning unit, without regulating again the first expansion valve and the second expansion valve, need to regulate two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, reduce control object, simplified the control system of this air-conditioning unit, improved the reliability of this air-conditioning unit.
It should be noted that, refrigerant after regulating in prior art need to pass through economizer, pass through the outpost of the tax office one, and the refrigerant after adjusting directly flows to the second heat exchanger (First Heat Exchanger) by First Heat Exchanger (the second heat exchanger) in the air-conditioning unit that the utility model embodiment provides, there is no intermediate node, therefore improved governing speed.The air-conditioning unit that the utility model embodiment provides, has improved governing speed, and then has improved the runnability of this air-conditioning unit.Concrete, during refrigeration, the ability of compressor increases, can in the second heat exchanger, extract more refrigerant out, the coolant quantity in the second heat exchanger will reduce, there is the too low problem of evaporating pressure, and the air-conditioning unit that the utility model embodiment provides has been accelerated governing speed, accelerated to increase the cold medium flux that flow to the second heat exchanger, thereby solved faster the less problem of coolant quantity in the second heat exchanger, can solve faster the too low problem of the second heat exchanger evaporating pressure, thereby improve the runnability of this air-conditioning unit; While heating, the ability of compressor increases, can in First Heat Exchanger, extract more refrigerant out, the coolant quantity in First Heat Exchanger will reduce, there is the too low problem of evaporating pressure, and the air-conditioning unit that the utility model provides has been accelerated governing speed, accelerated to increase the cold medium flux that flow to First Heat Exchanger, thereby solved faster the less problem of coolant quantity in First Heat Exchanger, can solve faster the too low problem of First Heat Exchanger evaporating pressure, thereby improve the runnability of this air-conditioning unit.
Preferably, in the air-conditioning unit that above-described embodiment provides, the first expansion valve and the second expansion valve are fixed expansion valve, the first expansion valve and the second expansion valve are non-adjustable, when this air-conditioning unit of assembling, according to compressor, carry out optimum Match, select the first suitable expansion valve and the second expansion valve, can guarantee that the pressure in economizer mates with the intermediate pressure of compressor, makes this air-conditioning unit move in optimum state; Also can guarantee the liquid level in economizer, avoid occurring that gas that compressor sucks from economizer is with the problem of liquid coolant; Meanwhile, fixed expansion valve, cost is lower, and structure is more reliable.
The air-conditioning unit that the utility model embodiment provides, also can select the first expansion valve and the second expansion valve is adjustable expansion valve, in order to guarantee that this air-conditioning unit has higher running status, preferential selection the first expansion valve and the second expansion valve are fixed restriction orifice plate, this fixed restriction orifice plate has regulating power, but regulating power is lower.Certainly, the first expansion valve and the second expansion valve also can be other expansion valves, and the utility model embodiment does not do this particularly and limits.
For the ease of regulating, in the air-conditioning unit that above-described embodiment provides, the 3rd expansion valve is electric expansion valve, be convenient to like this adjusting of the 3rd expansion valve, simultaneously control system also can adopt tank level control system, based on the second heat exchanger (First Heat Exchanger) liquid level, changes and carries out Flow-rate adjustment mode and regulate continuously.Certainly, the 3rd expansion valve also can be other expansion valves, such as choke valve, capillary, variable-frequency restricting orifice, heating power expansion valve etc., and the utility model embodiment does not do this particularly and limits, as long as can guarantee that the 3rd expansion valve is adjustable.
Preferably, in the air-conditioning unit that above-described embodiment provides, compressor is split-compressor, and the gas outlet of economizer is connected with the secondary air inlet of compressor.Certainly, compressor also can be compound compressor, and economizer is two-stage or multistage economizer, concrete, and compressor is three-stage blower, and economizer is secondary economizer; Compressor is four-stage compressor, and economizer is three grades of economizers.Preferably, compressor is three-stage blower, and economizer is secondary economizer, and the one-level gas outlet of economizer is connected with the secondary air inlet of compressor, and the secondary gas outlet of economizer is connected with three grades of air inlets of compressor.
In the air-conditioning unit providing due to above-described embodiment, economizer also can be flash evaporation, therefore the utility model embodiment also provides another kind of air-conditioning unit, as shown in Figure 4, this air-conditioning unit, comprises compressor, the second heat exchanger and the First Heat Exchanger that are connected with compressor respectively, the first tube connector that connects First Heat Exchanger and the second heat exchanger, is serially connected with the first expansion valve, flash evaporation and the second expansion valve on the first tube connector; Wherein, compressor is split-compressor or compound compressor, and flash evaporation is connected with compressor, and the first expansion valve is between First Heat Exchanger and flash evaporation, and the second expansion valve is between the second heat exchanger and flash evaporation; This air-conditioning unit also comprises: the second tube connector that connects the second heat exchanger and First Heat Exchanger; Be serially connected with the second tube connector and adjustable the 3rd expansion valve.
As shown in Figure 5, the Principles of Regulation of the air-conditioning unit that the utility model embodiment provides are (take and freeze as example): the high-pressure liquid refrigerant from First Heat Exchanger is divided into two-way, flow through respectively the first tube connector and the second tube connector, that flows through the first tube connector leads up to the first expansion valve reducing pressure by regulating flow to state point 6, enter flash evaporation, in flash evaporation, gaseous coolant is separated from liquid refrigerants, and saturated liquid refrigerants to state point 8, enters the second heat exchanger through the second expansion valve throttling; Flowing through, the second tube connector Yi road is direct passes through the 3rd expansion valve throttling to state point 8 ', enters the second heat exchanger.By regulating the aperture of the 3rd expansion valve, directly regulate and from First Heat Exchanger, through the second tube connector, flow to the cold medium flux of the second heat exchanger, controlled the state of state point 8 ', simultaneously also indirect regulation from First Heat Exchanger, through the first tube connector, flow to the cold medium flux of the second heat exchanger, controlled the state of state point 8, only by regulating the 3rd expansion valve to realize, regulate First Heat Exchanger to flow to the cold medium flux of the second heat exchanger, thereby can meet regulatory demand.
The air-conditioning unit that the utility model embodiment provides, by setting up the second tube connector that connects First Heat Exchanger and the second heat exchanger, and on the second tube connector, be connected in series the 3rd expansion valve, the 3rd expansion valve is adjustable, refrigerant directly arrives the second heat exchanger (First Heat Exchanger) after the 3rd expansion valve, reach regulating effect, need to could arrive the second heat exchanger (or First Heat Exchanger) through flash evaporation with prior art refrigerant compares, obviously, reach regulating effect very fast, thereby improved governing speed, and then improved the runnability of this air-conditioning unit.
Simultaneously, the air-conditioning unit that the utility model embodiment provides, only by regulating the 3rd expansion valve, can realize the adjusting of this air-conditioning unit, without regulating again the first expansion valve and the second expansion valve, need to regulate two expansion valves (the first expansion valve and the second expansion valve) to compare with prior art, obviously, reduce control object, simplified the control system of this air-conditioning unit, improved the reliability of this air-conditioning unit.
It should be noted that, refrigerant after regulating in prior art need to pass through flash evaporation, pass through the outpost of the tax office one, and the refrigerant after adjusting directly flows to the second heat exchanger (First Heat Exchanger) by First Heat Exchanger (the second heat exchanger) in the air-conditioning unit that the utility model embodiment provides, there is no intermediate node, therefore improved governing speed.The air-conditioning unit that the utility model embodiment provides, has improved governing speed, and then has improved the runnability of this air-conditioning unit.Concrete, during refrigeration, the ability of compressor increases, can in the second heat exchanger, extract more refrigerant out, the coolant quantity in the second heat exchanger will reduce, there is the too low problem of evaporating pressure, and the air-conditioning unit that the utility model embodiment provides has been accelerated governing speed, accelerated to increase the cold medium flux that flow to the second heat exchanger, thereby solved faster the less problem of coolant quantity in the second heat exchanger, can solve faster the too low problem of the second heat exchanger evaporating pressure, thereby improve the runnability of this air-conditioning unit; While heating, the ability of compressor increases, can in First Heat Exchanger, extract more refrigerant out, the coolant quantity in First Heat Exchanger will reduce, there is the too low problem of evaporating pressure, and the air-conditioning unit that the utility model provides has been accelerated governing speed, accelerated to increase the cold medium flux that flow to First Heat Exchanger, thereby solved faster the less problem of coolant quantity in First Heat Exchanger, can solve faster the too low problem of First Heat Exchanger evaporating pressure, thereby improve the runnability of this air-conditioning unit.
Preferably, in the air-conditioning unit that above-described embodiment provides, the first expansion valve and the second expansion valve are fixed expansion valve, the first expansion valve and the second expansion valve are non-adjustable, when this air-conditioning unit of assembling, according to compressor, carry out optimum Match, select the first suitable expansion valve and the second expansion valve, can guarantee that the pressure in flash evaporation mates with the intermediate pressure of compressor, makes this air-conditioning unit move in optimum state; Also can guarantee the liquid level in flash evaporation, avoid occurring that gas that compressor sucks from flash evaporation is with the problem of liquid coolant; Meanwhile, fixed expansion valve, cost is lower, and structure is more reliable.
The air-conditioning unit that the utility model embodiment provides, also can select the first expansion valve and the second expansion valve is adjustable expansion valve, in order to guarantee that this air-conditioning unit has higher running status, preferential selection the first expansion valve and the second expansion valve are fixed restriction orifice plate, this fixed restriction orifice plate has regulating power, but regulating power is lower.Certainly, the first expansion valve and the second expansion valve also can be other expansion valves, and the utility model embodiment does not do this particularly and limits.
For the ease of regulating, in the air-conditioning unit that above-described embodiment provides, the 3rd expansion valve is electric expansion valve, be convenient to like this adjusting of the 3rd expansion valve, simultaneously control system also can adopt tank level control system, based on the second heat exchanger (First Heat Exchanger) liquid level, changes and carries out Flow-rate adjustment mode and regulate continuously.Certainly, the 3rd expansion valve also can be other expansion valves, such as choke valve, capillary, variable-frequency restricting orifice, heating power expansion valve etc., and the utility model embodiment does not do this particularly and limits, as long as can guarantee that the 3rd expansion valve is adjustable.
Preferably, in the air-conditioning unit that above-described embodiment provides, compressor is split-compressor, and the gas outlet of flash evaporation is connected with the secondary air inlet of compressor.Certainly, compressor also can be compound compressor, and flash evaporation is two-stage or Multi-stage flash hair device, concrete, and compressor is three-stage blower, and flash evaporation is secondary flash evaporation; Compressor is four-stage compressor, and flash evaporation is three grades of flash evaporations.Preferably, compressor is three-stage blower, and flash evaporation is secondary flash evaporation, and the one-level gas outlet of flash evaporation is connected with the secondary air inlet of compressor, and the secondary gas outlet of flash evaporation is connected with three grades of air inlets of compressor.
The air-conditioning unit that the utility model embodiment provides, can be the air-conditioning unit of separate refrigeration, also can be the air-conditioning unit (heat pump) heating separately, or the air-conditioning unit for heating and freeze, the utility model embodiment does not limit the type of this air-conditioning unit.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (12)
1. an air-conditioning unit, comprise compressor, the second heat exchanger and the First Heat Exchanger that are connected with described compressor respectively, connect the first tube connector of described First Heat Exchanger and described the second heat exchanger, is serially connected with the first expansion valve, economizer and the second expansion valve on described the first tube connector; Wherein, described compressor is split-compressor or compound compressor, described economizer is connected with described compressor, and described the first expansion valve is between described First Heat Exchanger and described economizer, and described the second expansion valve is between described the second heat exchanger and described economizer; It is characterized in that, described air-conditioning unit also comprises:
The second tube connector that connects described the second heat exchanger and described First Heat Exchanger;
Be serially connected with described the second tube connector and adjustable the 3rd expansion valve.
2. air-conditioning unit according to claim 1, is characterized in that, described the first expansion valve and described the second expansion valve are fixed expansion valve.
3. air-conditioning unit according to claim 1, is characterized in that, described the first expansion valve and described the second expansion valve are fixed restriction orifice plate.
4. air-conditioning unit according to claim 1, is characterized in that, described the 3rd expansion valve is electric expansion valve.
5. according to the air-conditioning unit described in any one in claim 1-4, it is characterized in that, described compressor is split-compressor, and the gas outlet of described economizer is connected with the secondary air inlet of described compressor.
6. according to the air-conditioning unit described in any one in claim 1-4, it is characterized in that, described compressor is three-stage blower, described economizer is secondary economizer, the one-level gas outlet of described economizer is connected with the secondary air inlet of described compressor, and the secondary gas outlet of described economizer is connected with three grades of air inlets of described compressor.
7. an air-conditioning unit, comprise compressor, the second heat exchanger and the First Heat Exchanger that are connected with described compressor respectively, connect the first tube connector of described First Heat Exchanger and described the second heat exchanger, is serially connected with the first expansion valve, flash evaporation and the second expansion valve on described the first tube connector; Wherein, described compressor is split-compressor or compound compressor, described flash evaporation is connected with described compressor, and described the first expansion valve is between described First Heat Exchanger and described flash evaporation, and described the second expansion valve is between described the second heat exchanger and described flash evaporation; It is characterized in that, described air-conditioning unit also comprises:
The second tube connector that connects described the second heat exchanger and described First Heat Exchanger;
Be serially connected with described the second tube connector and adjustable the 3rd expansion valve.
8. air-conditioning unit according to claim 7, is characterized in that, described the first expansion valve and described the second expansion valve are fixed expansion valve.
9. air-conditioning unit according to claim 7, is characterized in that, described the first expansion valve and described the second expansion valve are fixed restriction orifice plate.
10. air-conditioning unit according to claim 7, is characterized in that, described the 3rd expansion valve is electric expansion valve.
11. air-conditioning units according to any one of claims of claim 7-10, is characterized in that, described compressor is split-compressor, and the gas outlet of described flash evaporation is connected with the secondary air inlet of described compressor.
12. air-conditioning units according to any one of claims of claim 7-10, it is characterized in that, described compressor is three-stage blower, described flash evaporation is secondary flash evaporation, the one-level gas outlet of described flash evaporation is connected with the secondary air inlet of described compressor, and the secondary gas outlet of described flash evaporation is connected with three grades of air inlets of described compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468987.0U CN203443187U (en) | 2013-08-01 | 2013-08-01 | Air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320468987.0U CN203443187U (en) | 2013-08-01 | 2013-08-01 | Air conditioning unit |
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| Publication Number | Publication Date |
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| CN203443187U true CN203443187U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320468987.0U Expired - Lifetime CN203443187U (en) | 2013-08-01 | 2013-08-01 | Air conditioning unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344610A (en) * | 2013-08-01 | 2015-02-11 | 珠海格力电器股份有限公司 | Air conditioning unit |
-
2013
- 2013-08-01 CN CN201320468987.0U patent/CN203443187U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344610A (en) * | 2013-08-01 | 2015-02-11 | 珠海格力电器股份有限公司 | Air conditioning unit |
| CN104344610B (en) * | 2013-08-01 | 2016-08-24 | 珠海格力电器股份有限公司 | Air-conditioner set |
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