CN201265919Y - Air Conditioning system - Google Patents
Air Conditioning system Download PDFInfo
- Publication number
- CN201265919Y CN201265919Y CNU2008200499310U CN200820049931U CN201265919Y CN 201265919 Y CN201265919 Y CN 201265919Y CN U2008200499310 U CNU2008200499310 U CN U2008200499310U CN 200820049931 U CN200820049931 U CN 200820049931U CN 201265919 Y CN201265919 Y CN 201265919Y
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- Prior art keywords
- compressor
- flash evaporator
- valve
- conditioning system
- air
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- 238000004378 air conditioning Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 abstract description 10
- 239000003507 refrigerant Substances 0.000 description 42
- 238000001816 cooling Methods 0.000 description 9
- 238000005057 refrigeration Methods 0.000 description 9
- 238000000926 separation method Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013526 supercooled liquid Substances 0.000 description 1
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- Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
Abstract
The utility model relates to an air conditioning system especially relates to an air conditioning system that can effectively promote complete machine efficiency. The air conditioning system comprises a compressor, a liquid storage device, a flash evaporator, a first throttling part, a second throttling part, a four-way reversing valve, an outdoor heat exchanger and an indoor heat exchanger; all parts are connected together through pipelines; the air outlet of the compressor is connected with the reversing valve through a pipeline, and the first air suction port of the compressor is connected with the liquid storage device through a pipeline; the other end of the liquid storage device is connected with a reversing valve; a steam outlet of the flash evaporator is connected with a second air suction port of the compressor; the second throttling part comprises two capillary tubes and a one-way valve, wherein a channel formed by connecting the capillary tubes and the one-way valve in series is connected with the other capillary tube in parallel; the second throttling component is close to the one-way valve conducting end and is connected with a first air inlet of the flash evaporator; the second air inlet of the flash evaporator is connected with the first throttling part. The air conditioning system can obtain higher refrigerating capacity and energy efficiency ratio, and maintain the original performance index under the heating condition.
Description
Technical Field
The utility model relates to an air conditioning system especially relates to an air conditioning system that can effectively promote complete machine efficiency.
Background
At present, the technology of increasing enthalpy by injection (EVI) of a compressor of a household air conditioner is gradually applied, but the current system configuration mode is adopted. This effect is exerted only when the air conditioner is heating, and is not exerted in the cooling mode.
For example, chinese patent publication No. CN201043823 discloses the following technical solutions:
as shown in fig. 1, a thick solid arrow line in the figure indicates a flow direction of the refrigerant when the air conditioning system heats; the thin solid arrows indicate the flow of refrigerant during cooling of the air conditioning system.
An air conditioning system comprises a compressor 1, a flash evaporator assembly, a four-way reversing valve 2, an outdoor heat exchanger 3, an indoor heat exchanger 4, a liquid storage device 5 and a main throttling component 6; all parts are connected together through pipelines; the compressor 1 is provided with an air outlet P1 and a first air suction port X1 and a second air suction port X2; the flash evaporator assembly comprises a flash evaporator 8 with an air inlet 81, a vapor outlet 82 and a liquid outlet 83, two electromagnetic valves 71 and 72, two capillary tubes 91 and 92 and two one-way valves 101 and 102; the part inside the dashed line box in the figure is the flash evaporator component. The liquid outlet 83 of the flash evaporator is connected with an auxiliary throttling component which is formed by connecting a channel formed by connecting a first capillary tube 91 and a second electromagnetic valve 72 in series, connecting the channel with a second capillary tube 92 in parallel and then connecting the channel with a second one-way valve 102 of which the conducting end is close to the liquid outlet 83 in series; a first one-way valve 101 is connected between the steam outlet 82 of the flash evaporator and the cut-off end of the second one-way valve 102, and the cut-off end of the first one-way valve 101 is connected with the steam outlet of the flash evaporator. Of course, the end of the first check valve 101 connected to the blocking end of the second check valve 102 may be connected to the portion of the auxiliary throttle member where the passage formed by the first capillary 91 and the second solenoid valve 72 connected in series is connected in parallel to the second capillary 92. The auxiliary throttling part can also be formed by connecting a capillary tube and a second one-way valve with a conducting end close to the liquid outlet in series.
The steam outlet 82 of the flash evaporator is connected with a second suction port X2 of the compressor through a pipeline; a first electromagnetic valve 71 is connected between the steam outlet 82 of the flash evaporator and a second suction port X2 of the compressor; an air inlet 81 of the flash evaporator is connected with one end of the main throttling part 6, and the main throttling part is a capillary tube in the embodiment; the other end of the main throttling component 6 is connected to one end of the indoor heat exchanger 4 (the end is the inlet end of the indoor heat exchanger 4 by taking a refrigeration mode as a definition standard); the joint of the first check valve 101 and the second check valve 102 is connected to one end of the outdoor heat exchanger 3 (the end is the outlet end of the outdoor heat exchanger 3 with the cooling mode as the definition standard).
The operation of the air conditioning system is described as follows:
in the cooling mode, the first solenoid valve 71 connected to the second suction port X2 of the compressor 1 is closed, and the characteristics of the compressor 1 are identical to those of a general compressor. Refrigerant gas discharged from a compressor exhaust port P1 enters the outdoor heat exchanger 3 for cooling, cooled high-pressure refrigerant liquid enters the flash evaporator 8 through the first one-way valve 101, at the moment, the flash evaporator 8 is equivalent to a high-pressure liquid storage device in function and can store refrigerant, and when the working condition changes, the refrigerant gas can play a role in stably adjusting the system by storing and releasing the refrigerant. The air inlet 81 of the flash evaporator 8 is connected with a main throttling component, namely a capillary tube 6, for throttling and pressure reduction, the throttled refrigerant liquid enters the indoor heat exchanger 4 for evaporation, the evaporated refrigerant gas enters the liquid storage device 5, the liquid storage device 5 is a low-pressure liquid storage device and has the function of a vapor-liquid separator, and the compressor 1 absorbs the refrigerant gas in the liquid storage device 5 for compression, so that a complete refrigeration cycle is completed. At this time, the second check valve 102 can be conducted only in one direction, and therefore the auxiliary throttle member is not conducted with the refrigerant.
In the heating mode, the first solenoid valve 71 connected to the second suction port X2 of the compressor 1 is opened, and the compressor 1 has the function of increasing enthalpy by injection. High-temperature and high-pressure gas discharged by the compressor 1 firstly enters the indoor heat exchanger 4, the refrigerant releases heat, the refrigerant liquid after heat exchange is throttled and depressurized through the main capillary tube 6 to become a low-temperature and low-pressure refrigerant vapor-liquid mixture, and the refrigerant enters the flash evaporator 8 through the air inlet 81, is equivalent to a low-pressure liquid accumulator and has the vapor-liquid separation effect. In the flash evaporator 8, the refrigerant gas in the upper part is the refrigerant gas and the refrigerant liquid in the lower part is the refrigerant liquid due to the vapor-liquid separation action, the refrigerant gas in the upper part of the flash evaporator enters the compressor 1 from the vapor outlet 82 through the first electromagnetic valve 71 and the second suction port X2, and the refrigerant liquid in the lower part passes through the auxiliary throttle member under the action of the second check valve 102, and the throttled refrigerant enters the outdoor heat exchanger 3 to be evaporated. The evaporated refrigerant gas enters the accumulator 5 and then enters the first suction port X1 of the compressor 1, thereby completing the entire cycle.
The air conditioning system can only play a role in the injection enthalpy-increasing technology when the air conditioner heats, and the role of the air conditioner is not played in the refrigeration mode.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air conditioning system that can obtain high refrigerating output and energy efficiency ratio.
In order to achieve the above object, the utility model provides a following technical scheme:
the air conditioning system comprises a compressor, a liquid storage device, a flash evaporator, a first throttling part, a second throttling part, a four-way reversing valve, an outdoor heat exchanger and an indoor heat exchanger;
all parts are connected together through pipelines;
the compressor is provided with an air outlet, a first air suction port and a second air suction port;
the air outlet of the compressor is connected with the four-way reversing valve through a pipeline, and the first air suction port of the compressor is connected with the liquid storage device through a pipeline; the other end of the liquid storage device is connected with the four-way reversing valve through a pipeline;
wherein,
the flash evaporator is provided with a steam outlet, a first air inlet and a second air inlet; the steam outlet of the flash evaporator is connected with a second air suction port of the compressor through a pipeline;
the second throttling part comprises two capillary tubes and a valve, wherein a channel formed by connecting one capillary tube and the valve in series is connected with the other capillary tube in parallel; the end, close to the valve conducting end, of the second throttling component is connected with a first air inlet of the flash evaporator, and the other end of the second throttling component is connected with an outdoor heat exchanger;
and a second air inlet of the flash evaporator is connected with the first throttling part, and the other end of the first throttling part is connected with the indoor heat exchanger.
By optimizing the configuration of the system, the air conditioning system can utilize the vapor-liquid separation function of the flash evaporator in the refrigeration and heating modes, can obtain higher refrigeration capacity and energy efficiency ratio under the refrigeration working condition, and keeps the original performance index under the heating working condition.
Drawings
FIG. 1 is a schematic diagram of a prior art air conditioning system;
fig. 2 is a schematic view of a first embodiment of the air conditioning system of the present invention;
fig. 3 is a schematic view of a second embodiment of the air conditioning system of the present invention;
fig. 4 is a schematic diagram of an air conditioning system according to a third embodiment of the present invention.
The present invention will be further explained with reference to the drawings and examples.
Detailed Description
Example one
As shown in fig. 2, a thick solid arrow line in the figure indicates a flow direction of the refrigerant when the air conditioning system heats; the thin solid arrows indicate the flow of refrigerant during cooling of the air conditioning system.
An air conditioning system comprises a compressor 10, a flash evaporator 80, a four-way reversing valve 20, an outdoor heat exchanger 30, an indoor heat exchanger 40, a liquid storage device 50 and a first throttling part 60 (namely a throttling valve); all parts are connected together through pipelines; the compressor 10 has an air outlet B1 and first and second air inlets A1 and A2. The flash evaporator has inlet first and second inlets 801, 802 and a vapor outlet 803. The two capillary tubes 702 and 704, the first one-way valve 701 and the electromagnetic valve 703 constitute a second throttling component, in this embodiment, the valve connected to the capillary tube 702 is a one-way valve, and of course, the valve may also be a two-way valve or an electromagnetic valve. The first check valve 701, the capillary 702 and the solenoid valve 703 are connected in series in sequence, and the capillary 704 is connected in parallel with a branch of the three series. The first air inlet 801 of the flash evaporator 80 is connected to the conducting end of the second throttling component 70 close to the first check valve 701, and the other end of the second throttling component 70 is connected to one end of the outdoor heat exchanger 30 (the end is the outlet end of the outdoor heat exchanger 30 by taking the refrigeration mode as a definition standard). The second air inlet 802 of the flash evaporator 80 is connected to the first throttling part 60, and the other end of the first throttling part 60 is connected to one end of the indoor heat exchanger (the end is the inlet end of the indoor heat exchanger 40 by taking the cooling mode as a definition standard). The vapor outlet 803 of the flash evaporator 80 is connected to the second suction port a2 of the compressor 10 through a pipeline. The first suction port a1 of the compressor 10 is connected to the accumulator 50, and the other end of the accumulator 50 is connected to the four-way selector valve 20. The outlet B1 of the compressor 10 is connected to the four-way reversing valve 20.
The working process of the embodiment is described as follows:
in a refrigeration mode, the air conditioning system has a function of increasing enthalpy by injection, high-temperature and high-pressure gas discharged by the compressor 10 enters the outdoor heat exchanger 30, and is changed into high-pressure liquid refrigerant after sufficient heat exchange, the liquid refrigerant is throttled and depressurized by the capillary tube 704 and then enters the flash evaporator 80 from the first air inlet 801, at the moment, the flash evaporator 80 serves as a medium-pressure liquid reservoir, effective vapor-liquid separation can be performed on the refrigerant, the refrigerant exchanges heat with itself to form saturated vapor and subcooled liquid, the saturated vapor in the saturated vapor does not enter the indoor heat exchanger 40 any more, but directly enters a medium-pressure cavity of the compressor 10 from the second air suction port a2 of the compressor 10 through the vapor outlet 803 of the flash evaporator 80, and the cycle is completed by compression. The supercooled liquid at the bottom of the flash evaporator 80 is further throttled by the first throttling component 60 (i.e., capillary tube) and then enters the indoor heat exchanger 40 at a certain dryness, after heat exchange by the indoor heat exchanger 40, the refrigerant gas enters the liquid reservoir 50 and then enters the first air intake a1 of the compressor 10 to be compressed, thereby completing the cycle. Wherein, according to the size of the machine type, the refrigerant entering the medium-pressure cavity of the compressor 10 can be subjected to certain pressure reduction and flow control, thereby achieving the best effect.
In the heating mode, the compressor 10 has the function of increasing enthalpy by injection. High-temperature and high-pressure gas discharged by the compressor 10 enters the indoor heat exchanger 40, heat is released by refrigerant in the indoor heat exchanger 40, refrigerant liquid after heat exchange is throttled and depressurized by the first throttling component 60, the refrigerant enters the flash evaporator 80 from the second air inlet, and the flash evaporator 80 also has the function of vapor-liquid separation. In the flash evaporator 80, the refrigerant gas is in the upper part and the refrigerant liquid is in the lower part due to the vapor-liquid separation action, the refrigerant gas in the upper part of the flash evaporator 80 enters the compressor 10 through the vapor outlet 803, the refrigerant liquid in the lower part is throttled by the capillary tube 702 and the capillary tube 704, and the throttled refrigerant enters the outdoor heat exchanger 30 and is evaporated. The first check valve 701 is needed to adjust and control the flow rate of the refrigerant before and after the flash evaporator 80 when the system is used for cooling and heating, the refrigerant only passes through the capillary tube 704 when the system is used for cooling, passes through the capillary tube 704 and the capillary tube 702 when the system is used for heating, and the electromagnetic valve 703 can act at a certain characteristic temperature (usually 0 ℃ or other temperatures), so that the passage of the capillary tube 702 is cut off, and a better heating effect is achieved. The refrigerant gas after evaporation, which enhances the efficiency of the entire system, enters the accumulator 50 and then the first suction port a1 of the compressor 10, thereby completing the entire cycle.
Example two
As shown in fig. 3, the present embodiment is different from the first embodiment in that a capillary tube 90 is additionally provided between the vapor outlet 803 of the flash evaporator 80 and the second suction port of the compressor 10, and the capillary tube 90 can effectively balance the system pressure, control the flow rate, and the like.
EXAMPLE III
As shown in fig. 4, the present embodiment is different from the second embodiment in that the first throttling part 60 is composed of two channels connected in parallel, each channel being formed by a capillary tube and a check valve in series, and the check valves in the two channels are conducted in opposite directions. One of the two is formed by connecting a main refrigeration capillary 604 and a second one-way valve 603 in series, and the conducting end of the second one-way valve 603 is close to a second air inlet 802 of the flash evaporator 80; the other one is formed by connecting a main heating capillary 602 and a third one-way valve 601 in series, and the conducting end of the third one-way valve 601 is far away from a second air inlet 802 of the flash evaporator 80.
Of course, the air conditioning system of the present invention can also be deformed by other methods. In conclusion, obvious modifications and other changes from the embodiments described above are intended to be included within the scope of the appended claims.
Claims (5)
1. The air conditioning system comprises a compressor, a liquid storage device, a flash evaporator, a first throttling part, a second throttling part, a four-way reversing valve, an outdoor heat exchanger and an indoor heat exchanger;
all parts are connected together through pipelines;
the compressor is provided with an air outlet, a first air suction port and a second air suction port;
the air outlet of the compressor is connected with the four-way reversing valve through a pipeline, and the first air suction port of the compressor is connected with the liquid storage device through a pipeline; the other end of the liquid storage device is connected with the four-way reversing valve through a pipeline;
the method is characterized in that:
the flash evaporator is provided with a steam outlet, a first air inlet and a second air inlet; the steam outlet of the flash evaporator is connected with a second air suction port of the compressor through a pipeline;
the second throttling part comprises two capillary tubes and a valve, wherein a channel formed by connecting one capillary tube and the valve in series is connected with the other capillary tube in parallel; the end, close to the valve conducting end, of the second throttling component is connected with a first air inlet of the flash evaporator, and the other end of the second throttling component is connected with an outdoor heat exchanger;
and a second air inlet of the flash evaporator is connected with the first throttling part, and the other end of the first throttling part is connected with the indoor heat exchanger.
2. The air conditioning system as set forth in claim 1,
the method is characterized in that:
the first throttling component is a capillary tube.
3. The air conditioning system as set forth in claim 1,
the method is characterized in that:
the first throttling part comprises two capillary tubes and two one-way valves, wherein a serial pipeline consisting of one-way valve and one capillary tube is connected in parallel with a serial pipeline consisting of the other one-way valve and the other capillary tube; the conducting directions of the two one-way valves are opposite.
4. The air conditioning system according to any one of claims 1 to 3,
the method is characterized in that:
and a capillary tube is arranged between the steam outlet of the flash evaporator and the second air suction port of the compressor.
5. The air conditioning system as set forth in claim 1,
the method is characterized in that:
the valve is one of a one-way valve, a two-way valve and an electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200499310U CN201265919Y (en) | 2008-06-30 | 2008-06-30 | Air Conditioning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200499310U CN201265919Y (en) | 2008-06-30 | 2008-06-30 | Air Conditioning system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201265919Y true CN201265919Y (en) | 2009-07-01 |
Family
ID=40832286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200499310U Expired - Lifetime CN201265919Y (en) | 2008-06-30 | 2008-06-30 | Air Conditioning system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201265919Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102538273A (en) * | 2012-02-10 | 2012-07-04 | 海信（山东）空调有限公司 | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner |
| CN102927008A (en) * | 2011-08-10 | 2013-02-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, and air conditioning system having it |
| CN103807936A (en) * | 2012-11-08 | 2014-05-21 | 杭州三花研究院有限公司 | Heat pump air-conditioner system |
| CN104949402A (en) * | 2014-03-28 | 2015-09-30 | 珠海格力电器股份有限公司 | Refrigerant regulator, refrigerant regulating method and air conditioner |
-
2008
- 2008-06-30 CN CNU2008200499310U patent/CN201265919Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927008A (en) * | 2011-08-10 | 2013-02-13 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, and air conditioning system having it |
| CN102927008B (en) * | 2011-08-10 | 2015-06-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor, and air conditioning system having it |
| CN102538273A (en) * | 2012-02-10 | 2012-07-04 | 海信（山东）空调有限公司 | Vapor-injected air-conditioning system, vapor-injected air-conditioning control method and air-conditioner |
| CN103807936A (en) * | 2012-11-08 | 2014-05-21 | 杭州三花研究院有限公司 | Heat pump air-conditioner system |
| CN103807936B (en) * | 2012-11-08 | 2018-06-26 | 杭州三花研究院有限公司 | A kind of heat pump air conditioning system |
| CN104949402A (en) * | 2014-03-28 | 2015-09-30 | 珠海格力电器股份有限公司 | Refrigerant regulator, refrigerant regulating method and air conditioner |
| CN104949402B (en) * | 2014-03-28 | 2019-03-05 | 珠海格力电器股份有限公司 | Refrigerant regulator, refrigerant regulating method and air conditioner |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |
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| CX01 | Expiry of patent term |