CN202071840U - Four-stage energy adjustable heat pump type rail transmit train air conditioning unit - Google Patents
Four-stage energy adjustable heat pump type rail transmit train air conditioning unit Download PDFInfo
- Publication number
- CN202071840U CN202071840U CN2011200645094U CN201120064509U CN202071840U CN 202071840 U CN202071840 U CN 202071840U CN 2011200645094 U CN2011200645094 U CN 2011200645094U CN 201120064509 U CN201120064509 U CN 201120064509U CN 202071840 U CN202071840 U CN 202071840U
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- heat exchanger
- conditioning unit
- compressor
- indoor heat
- pump type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The utility model discloses a four-stage energy adjustable heat pump type rail transmit train air conditioning unit consisting of two independent refrigerating loops, wherein the each refrigerating loop comprises a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way reversing valve and a gas-liquid separator, the compressor, the outdoor heat exchanger, the indoor heat exchanger, the four-way reversing valve and the gas-liquid separator are connected through refrigerant pipelines. The four-stage energy adjustable heat pump type rail transmit train air conditioning unit of the utility model has the beneficial effects that: the air conditioning unit has a wider energy adjustable range and can realize four kinds of refrigerating capacity/heating capacity outputs, i.e., 100%, 75%, 50%, and 25%; starting/stopping frequencies of the compressor during the refrigerating/heating are less, thus the impact to a train-mounted power source of the rail transmit train can be reduced; the temperature fluctuation in a compartment is small during the refrigerating, thus the air conditioning unit can operate within a high temperature season scope; and the air conditioning unit also has the advantages of low energy consumption and high integral energy efficiency ratio.
Description
Technical field
The utility model relates to a kind of track traffic air-conditioning, particularly a kind of level Four capacity control formula pump type heat rail transit train air-conditioning unit.
Background technology
Under normal conditions, it is fast and greatly that the running environment of rail transit train changes, violent as peak load conditions passenger flow on and off duty fluctuation, weather (fine, the rainy day) temperature difference is big, overhead/ground and tunnel temperature differ greatly etc., cause the compartment load variations fluctuation of rail transit train violent, therefore, the compartment thermal load of rail transit train also is quick and violent to the variation of the refrigerating capacity demand of the air-conditioning unit of rail transit train.
At present, rail transit train air-conditioning unit generally adopts two refrigeration systems, 1 invariable frequency compressor of the general employing of the configuration of each refrigeration system, and promptly each refrigeration system has only startup/stop mode; Can only export 50% (closing the compressor of 1 refrigeration system) or 100% refrigerating capacity to rail transit train air-conditioning unit, therefore cause the compressor start of refrigeration system/stop very frequent, impact to the vehicle power of rail transit train is bigger, the contact of electric elements that has increased the control system of rail transit train consumes, the compartment temperature fluctuation is big, power consumption height (comprehensive Energy Efficiency Ratio is low), and be limited in scope at the high temperature season refrigerating operaton, the general environment temperature is higher than 45 ℃, and the air-conditioning unit just need stop refrigerating operaton.
In addition, adopt the electro heat form when air-conditioning unit heats, realize that the heating capacity that requires needs identical power consumption, Energy Efficiency Ratio low (Energy Efficiency Ratio is 1), winter is bigger to the horsepower input that rail transit train air-conditioning unit requires, the power consumption height.
The proposition of raising that traveling comfort is required along with the passenger and national energy-saving and emission-reduction policy, target, the multistage capacity control and the energy-conservation demand of rail transit train air-conditioning unit also grow with each passing day.
The utility model content
The technical problems to be solved in the utility model is: big in order to overcome present rail transit train air-conditioning unit energy output pulsation, problems such as temperature fluctuation is big, energy consumption height provide a kind of level Four capacity control formula pump type heat rail transit train air-conditioning unit.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of level Four capacity control formula pump type heat rail transit train air-conditioning unit, by two independently refrigerating circuit form, each refrigerating circuit all has a compressor, an outdoor heat exchanger, an indoor heat exchanger, a four-way change-over valve and a gas-liquid separator, connects by the refrigerant pipeline between compressor, outdoor heat exchanger, indoor heat exchanger, four-way change-over valve and the gas-liquid separator.
Compressor is provided with the unloading electromagnetic valve.
One of them indoor heat exchanger is made of by the parallel connection of refrigerant pipeline mutually half of two indoor heat exchangers, and another indoor heat exchanger is made of by the parallel connection of refrigerant pipeline mutually second half of two indoor heat exchangers.
The export pipeline of outdoor heat exchanger is provided with the first liquid way solenoid valve.
The inlet ductwork of indoor heat exchanger is provided with the second liquid way solenoid valve.
The beneficial effects of the utility model are: have capacity control scope widely, can realize 100%, 75%, 50%, 25% 4 kind of refrigerating capacity/heating capacity output; Compressor start during refrigeration/stop number of times is few, has reduced the impact to the rail transit train vehicle power; Compartment temperature fluctuation is little during refrigeration, can move in the high temperature season scope; Energy consumption is low, the Energy Efficiency Ratio height.
Description of drawings
Fig. 1 is the systematic cyclic graph under the utility model refrigeration mode;
Fig. 2 is the systematic cyclic graph under the utility model heating mode.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, 2, a kind of level Four capacity control formula pump type heat rail transit train air-conditioning unit, by two independently refrigerating circuit form, each refrigerating circuit all has a compressor 1, outdoor heat exchanger 2, indoor heat exchanger 3, a four-way change-over valve 4 and a gas-liquid separator 5, one first liquid way solenoid valve 6, one second liquid way solenoid valve 7, high-voltage switch gear 8, filter 9, liquid-sighting glass 10 and two heating power expansion valves 11 connect by the refrigerant pipeline between each system unit; One of them indoor heat exchanger 3 is made of by the parallel connection of refrigerant pipeline mutually half of two indoor heat exchangers 3, and another indoor heat exchanger 3 is made of by the parallel connection of refrigerant pipeline mutually second half of two indoor heat exchangers 3.
Under refrigeration mode, outdoor heat exchanger 2 is a condenser, and indoor heat exchanger 3 is an evaporator.Under heating mode, outdoor heat exchanger 2 is an evaporator, and indoor heat exchanger 3 is a condenser.
In the utility model, compressor 1 adopts the semi-hermetic piston-type compressor of band unloading electromagnetic valve, so compressor 1 has offloading functions.
Under refrigeration mode; outdoor heat exchanger 2 is that the first liquid way solenoid valve 6 is set on the condensator outlet pipeline; it mainly acts on is when refrigeration system stops (when compressor quits work); cut off this first liquid way solenoid valve 6; stop liquid refrigerant to continue to flow into evaporator; prevent that compressor 1 from producing liquid hammer, protection compressor 1 when starting.Indoor heat exchanger 3 is on the inlet ductwork of evaporator the second liquid way solenoid valve 7 to be set, main effect be when high temperature by closing half of indoor heat exchanger 3 evaporators, reduce the IL of compressor, guarantee the normal operation of unit (compressor).
During four-way change-over valve 4 outages, the air-conditioning unit operates in refrigeration mode, and indoor heat exchanger 3 is an evaporator, and outdoor heat exchanger 2 is a condenser, realizes refrigerating function.When four-way change-over valve 4 energising, the switching by the electromagnetic valve inner valve makes refrigerant loop reverse, and indoor heat exchanger 3 be a condenser, and outdoor heat exchanger 2 is an evaporator, the realization heat-production functions.
Exportable 50% and 100% free air capacity is opened/stopped to 1 compressor by what be arranged on unloading electromagnetic valve on the compressor.Therefore 1 cooling/heating system can provide refrigerating capacity/heating capacity of 50% and 100%.
By above-mentioned layout as seen, this air-conditioning unit by the opening of compressor, stop making up and the break-make control of liquid way solenoid valve can realize four kinds of refrigerating capacitys and heating capacity output, can realize about 100%, 75%, 50%, 25% refrigeration and heating mode according to their various combination mode air-conditioning unit; And has an offloading functions.
The concrete mode of four kinds of refrigerating capacity/heating capacity outputs is as follows:
100% refrigerating capacity/heating capacity output:
The compressor 1 of two refrigerating circuits all is fully loaded with work; And outdoor heat exchanger 2 and indoor heat exchanger 3 work;
75% refrigerating capacity/heating capacity output:
Refrigerating circuit compressor 1 a normal full load job, compressor 1 unloaded operation of another one refrigerating circuit, and outdoor heat exchanger 2 and indoor heat exchanger 3 work;
50% refrigerating capacity/heating capacity output:
Refrigerating circuit compressor 1 unloaded operation, compressor 1 unloaded operation of another one refrigerating circuit, and outdoor heat exchanger 2 and indoor heat exchanger 3 work;
25% refrigerating capacity/heating capacity output:
Refrigerating circuit compressor 1 unloaded operation, and outdoor heat exchanger 2 and indoor heat exchanger 3 work; The compressor 1 of another one refrigerating circuit quits work, and outdoor heat exchanger 2 and indoor heat exchanger 3 are not worked.
When refrigeration mode under the hot conditions (as: outside temperature greater than 45 ℃), the detachable carrying row of each refrigeration system compressor of air-conditioning unit, and close half of 1 indoor heat exchanger 3.Owing to improved outdoor area relatively, can make height be pressed with the decline of certain amplitude; Owing to reduced evaporator area, can make low pressure control in certain scope, (promptly control the field of application that low pressure is no more than compressor) simultaneously.Therefore, this mode can make the air-conditioning unit keep certain refrigerating capacity in higher ambient temperature.Concrete highest temperature SC service ceiling is different according to the border and the specific requirement meeting of design condition.
More than show and described groundwork of the present utility model and principal character.Those skilled in the art should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.
Claims (5)
1. level Four capacity control formula pump type heat rail transit train air-conditioning unit, it is characterized in that: by two independently refrigerating circuit form, each refrigerating circuit all has a compressor (1), an outdoor heat exchanger (2), an indoor heat exchanger (3), a four-way change-over valve (4) and a gas-liquid separator (5), connects by the refrigerant pipeline between compressor (1), outdoor heat exchanger (2), indoor heat exchanger (3), four-way change-over valve (4) and the gas-liquid separator (5).
2. level Four capacity control formula pump type heat rail transit train air-conditioning unit according to claim 1, it is characterized in that: described compressor (1) is provided with the unloading electromagnetic valve.
3. level Four capacity control formula pump type heat rail transit train air-conditioning unit according to claim 1, it is characterized in that: described one of them indoor heat exchanger (3) is by half mutual refrigerant pipeline parallel connection formation of passing through of two indoor heat exchangers (3), and another indoor heat exchanger (3) is by second half mutual refrigerant pipeline parallel connection formation of passing through of two indoor heat exchangers (3).
4. level Four capacity control formula pump type heat rail transit train air-conditioning unit according to claim 1, it is characterized in that: the export pipeline of described outdoor heat exchanger (2) is provided with the first liquid way solenoid valve (6).
5. level Four capacity control formula pump type heat rail transit train air-conditioning unit according to claim 1, it is characterized in that: the inlet ductwork of described indoor heat exchanger (3) is provided with the second liquid way solenoid valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645094U CN202071840U (en) | 2011-03-14 | 2011-03-14 | Four-stage energy adjustable heat pump type rail transmit train air conditioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200645094U CN202071840U (en) | 2011-03-14 | 2011-03-14 | Four-stage energy adjustable heat pump type rail transmit train air conditioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202071840U true CN202071840U (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200645094U Expired - Lifetime CN202071840U (en) | 2011-03-14 | 2011-03-14 | Four-stage energy adjustable heat pump type rail transmit train air conditioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202071840U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103621612A (en) * | 2013-12-02 | 2014-03-12 | 天津大学 | Movable fruit and vegetable temperature shock processing system without adopting electricity |
| CN104554313A (en) * | 2015-01-12 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Ultra-thin air conditioning unit and urban rail vehicle installed with air conditioning unit |
| CN105539477A (en) * | 2016-02-04 | 2016-05-04 | 上海科泰运输制冷设备有限公司 | Defrosting unit of heat pump air conditioner |
| US10442272B2 (en) | 2014-08-22 | 2019-10-15 | Thermo King Corporation | Method and system for defrosting a heat exchanger |
| CN114508868A (en) * | 2021-12-31 | 2022-05-17 | 上海科泰运输制冷设备有限公司 | Refrigeration device, refrigeration control method and system |
-
2011
- 2011-03-14 CN CN2011200645094U patent/CN202071840U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103621612A (en) * | 2013-12-02 | 2014-03-12 | 天津大学 | Movable fruit and vegetable temperature shock processing system without adopting electricity |
| US10442272B2 (en) | 2014-08-22 | 2019-10-15 | Thermo King Corporation | Method and system for defrosting a heat exchanger |
| CN104554313A (en) * | 2015-01-12 | 2015-04-29 | 南车青岛四方机车车辆股份有限公司 | Ultra-thin air conditioning unit and urban rail vehicle installed with air conditioning unit |
| CN105539477A (en) * | 2016-02-04 | 2016-05-04 | 上海科泰运输制冷设备有限公司 | Defrosting unit of heat pump air conditioner |
| CN105539477B (en) * | 2016-02-04 | 2018-07-24 | 上海科泰运输制冷设备有限公司 | Heat pump air conditioner defrost unit |
| CN114508868A (en) * | 2021-12-31 | 2022-05-17 | 上海科泰运输制冷设备有限公司 | Refrigeration device, refrigeration control method and system |
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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: 20111214 |
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| CX01 | Expiry of patent term |