CN205641208U

CN205641208U - Single -cooling air conditioner

Info

Publication number: CN205641208U
Application number: CN201620384526.9U
Authority: CN
Inventors: 刘湍顺; 杨亚新; 陈明瑜; 任超; 孙兴; 白军辉
Original assignee: Midea Group Co Ltd; Guangdong Midea Refrigeration Equipment Co Ltd
Current assignee: Midea Group Co Ltd; GD Midea Air Conditioning Equipment Co Ltd
Priority date: 2016-04-29
Filing date: 2016-04-29
Publication date: 2016-10-12
Anticipated expiration: 2026-04-29

Abstract

The utility model discloses a single -cooling air conditioner, include: double -cylinder compressor, outdoor heat exchanger, indoor heat exchanger and vapour and liquid separator, double -cylinder compressor include first cylinder, second cylinder, first reservoir and second reservoir, the induction port and the first reservoir intercommunication of first cylinder, and the induction port and the second reservoir intercommunication of second cylinder, the value range of the exhaust volume ratio of second cylinder and first cylinder is 1%~10%, vapour and liquid separator includes gas outlet, first interface and second interface, and the gas outlet links to each other with the second reservoir, and it has an aperture adjustable throttling element to establish ties between first interface and the outdoor heat exchanger, and it has the 2nd throttling element of fixed aperture to establish ties between second interface and the indoor heat exchanger. According to the utility model discloses a single -cooling air conditioner effectively improves the air conditioner efficiency.

Description

Single cold type air-conditioner

Technical field

This utility model relates to refrigerating field, especially relates to a kind of single cold type air-conditioner.

Background technology

Gaseous refrigerant after throttling and before entering vaporizer is not carried out excellent by current air-conditioning refrigeration system Change cyclic design, cause gaseous refrigerant to affect evaporator heat exchange performance, and increase compressor compresses power consumption, Thus have influence on energy efficiency of air conditioner level.Air injection enthalpy-increasing and Two-stage Compression technology can improve air conditioning system low Heating capacity level under gentle ultralow temperature, but for the commonly used cooling condition of air-conditioning, efficiency promotes non- The most limited.

Utility model content

One of technical problem that this utility model is intended to solve in correlation technique the most to a certain extent.

To this end, the utility model proposes a kind of single cold type air-conditioner, energy efficiency of air conditioner can be effectively improved, have Effect promotes energy-saving and emission-reduction.

Single cold type air-conditioner according to this utility model embodiment, including: duplex cylinder compressor, described twin-tub pressure Contracting machine includes housing, the first cylinder, the second cylinder, the first reservoir and the second reservoir, on described housing It is provided with air vent, described first cylinder and described second cylinder to be respectively provided in described housing, described first storage Liquid device and described second reservoir are located at outside described housing, the air entry of described first cylinder and described first storage Liquid device connects, and the air entry of described second cylinder connects with described second reservoir, described second cylinder and institute The span of the delivery space ratio stating the first cylinder is 1%～10%；Outdoor heat exchanger and indoor heat exchanger, First end of described outdoor heat exchanger is connected with described air vent, and the first end of described indoor heat exchanger is with described First reservoir is connected；Gas-liquid separator, described gas-liquid separator includes gas outlet, first interface and Two interfaces, described gas outlet is connected with described second reservoir, described first interface and described outdoor heat exchange Second end of device is connected, and described second interface is connected with the second end of described indoor heat exchanger, and described first connects It is in series with aperture adjustable first throttle element, described second interface and institute between mouth and described outdoor heat exchanger State the second section fluid element being in series with fixing aperture between indoor heat exchanger.

Single cold type air-conditioner according to this utility model embodiment, by arranging above-mentioned duplex cylinder compressor, permissible It is effectively improved energy efficiency of air conditioner, effectively facilitates energy-saving and emission-reduction, simultaneously by arranging gas-liquid separator, Ke Yiti High heat exchange efficiency, reduces compressor compresses power consumption, improves air-conditioner ability and efficiency further, further through setting Put the second reservoir, the service life of duplex cylinder compressor can be extended.

In embodiments more of the present utility model, described first throttle element is electric expansion valve, described Two restricting elements are capillary tube or choke valve.

In embodiments more of the present utility model, connect between described gas outlet and described second reservoir There is electromagnetic valve.

In embodiments more of the present utility model, the span of the volume of described gas-liquid separator is 100mL-500mL。

In embodiments more of the present utility model, the volume of described first reservoir is more than described second liquid storage The volume of device.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of the single cold type air-conditioner according to this utility model embodiment；

Fig. 2 is the schematic diagram of the single cold type air-conditioner being provided with electromagnetic valve according to this utility model embodiment；

Fig. 3 is the schematic diagram of the duplex cylinder compressor according to this utility model embodiment；

Fig. 4 is the flow process of the control method during single cold type air-conditioner refrigeration according to this utility model embodiment Figure.

Reference:

Single cold type air-conditioner 100,

Duplex cylinder compressor 1, housing the 10, first cylinder the 11, second cylinder the 12, first reservoir 13, Two reservoirs 14, air vent 15,

Outdoor heat exchanger 3, indoor heat exchanger 4,

Gas-liquid separator 5, gas outlet m, first interface f, the second interface g,

First throttle element 6, second section fluid element 7,

Electromagnetic valve 20.

Detailed description of the invention

Of the present utility model embodiment is described below in detail, and the example of described embodiment is shown in the drawings.Under Face is exemplary by the embodiment being described with reference to the drawings, it is intended to be used for explaining this utility model, and can not It is interpreted as restriction of the present utility model.

In description of the present utility model, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, "front", "rear", "left", "right", " perpendicular Directly ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " footpath To ", the orientation of the instruction such as " circumferential " or position relationship be based on orientation shown in the drawings or position relationship, only It is for the ease of describing this utility model and simplifying description rather than instruction or the device of hint indication or element Must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that new to this practicality The restriction of type.

Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint Relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ", The feature of " second " can express or implicitly include at least one this feature.Retouch of the present utility model In stating, " multiple " are meant that at least two, such as two, three etc., unless otherwise the most concrete Limit.

In this utility model, unless otherwise clearly defined and limited, term " install ", " being connected ", " connect ", the term such as " fixing " should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be can Dismounting connects, or integral；Can be mechanically connected, it is also possible to be electrical connection or each other can communication；Permissible It is to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be the connection or two of two element internals The interaction relationship of individual element, unless otherwise clear and definite restriction.For those of ordinary skill in the art Speech, can understand above-mentioned term concrete meaning in this utility model as the case may be.

The single cold type air-conditioner 100 according to this utility model embodiment is described in detail below with reference to Fig. 1-Fig. 3, Wherein single cold type air-conditioner 100 has refrigeration mode.

As shown in Figure 1-Figure 3, according to the single cold type air-conditioner 100 of this utility model embodiment, including: double Cylinder compressor 1, outdoor heat exchanger 3 and indoor heat exchanger 4, gas-liquid separator 5, first throttle element 6 With second section fluid element 7.Wherein duplex cylinder compressor 1 includes housing the 10, first cylinder the 11, second cylinder 12, the first reservoir 13 and the second reservoir 14, housing 10 is provided with air vent 15, the first cylinder 11 Being respectively provided in housing 10 with the second cylinder 12, the first reservoir 13 and the second reservoir 14 are located at housing Outside 10, air entry and first reservoir 13 of the first cylinder 11 connect, the air entry of the second cylinder 12 with Second reservoir 14 connects.It is to say, the first cylinder 11 and the second cylinder 12 carry out independent compression mistake Journey, the gas coolant separated from the first reservoir 13 is compressed in being drained into the first cylinder 11, from The gas coolant that second reservoir 14 is separated is compressed in being drained into the second cylinder 12, from the first gas Coolant after the compression that cylinder 11 is discharged and the coolant after the compression that the second cylinder 12 is discharged are drained into shell respectively Then discharge from air vent 15 in body 10.

The span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～10%, enters one Step ground, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～9%, preferably Ground, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 4%～9%.Such as The delivery space ratio of two cylinders 12 and the first cylinder 11 can be the parameter such as 4%, 5%, 8% or 8.5%.

First end of outdoor heat exchanger 3 is connected with air vent 15, the first end of indoor heat exchanger 4 and first Reservoir 15 is connected.Gas-liquid separator 5 includes gas outlet m, first interface f and the second interface g, gas Body outlet m and the second reservoir 14 are connected, and first interface f is connected with the second end of outdoor heat exchanger 3, Second interface g is connected with the second end of indoor heat exchanger 4, goes here and there between first interface f and outdoor heat exchanger 3 It is associated with aperture adjustable first throttle element 6, is in series with fixing between the second interface g and indoor heat exchanger 4 The second section fluid element 7 of aperture.Alternatively, first throttle element 6 is electric expansion valve, the second throttling unit Part 7 is capillary tube or choke valve, it is of course possible to be understood by, and first throttle element 6 can also is that other are opened Spend adjustable element such as heating power expansion valve.

When single cold type air-conditioner 100 freezes, the high temperature discharged from the air vent 15 of duplex cylinder compressor 1 is high Pressure coolant is drained in outdoor heat exchanger 3 and carries out condensation heat radiation, the high-pressure liquid discharged from outdoor heat exchanger 3 Coolant is drained into gas-liquid separator 5 from first interface f after the one-level reducing pressure by regulating flow of first throttle element 6 In carry out gas-liquid separation, the intermediate pressure gaseous coolant separated is drained into the second liquid storage from gas outlet m Carrying out further gas-liquid separation in device 14, gaseous coolant is drained into the second cylinder from the second reservoir 14 afterwards It is compressed in 12.

From the intermediate pressure liquid coolant of the second interface g discharge of gas-liquid separator 5 through second section fluid element Heat exchange is carried out to reduce indoor environment temperature in being drained into indoor heat exchanger 4 after the two-step throttle blood pressure lowering of 7, from Indoor heat exchanger 4 discharge coolant be drained in the first reservoir 13, from first reservoir 13 discharge cold Matchmaker is compressed in being drained into the first cylinder 11.

It follows that when single cold type air-conditioner 100 runs, the coolant of different pressures state has respectively entered In first cylinder 11 and the second cylinder 12, the first cylinder 11 and the second cylinder 12 complete independently compression process, Coolant after the compression that the first cylinder 11 is discharged and the coolant after the compression that the second cylinder 12 is discharged are discharged to Discharge from air vent 15 after mixing in housing 10, simultaneously because the second cylinder 12 and row of the first cylinder 11 The span of air space ratio is 1%～10%, and the coolant that flow is less and pressure state is higher is drained into row It is compressed in the second cylinder 12 that air space is less, such that it is able to improve efficiency, energy-saving and emission-reduction.

Simultaneously by being provided with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 4, thus gas Liquid/gas separator 5 is compressed in being expelled back into the second cylinder 12 after being separated by a part of gaseous coolant, by This is flowed into the gas content in the coolant of indoor heat exchanger 4 when reducing refrigeration, decrease gaseous coolant pair As the impact of heat exchange property of the indoor heat exchanger 4 of vaporizer, such that it is able to improve heat exchange efficiency, reduce Compressor compresses power consumption.

Again owing to being provided with the second reservoir 14, such that it is able to the coolant discharged from gas-liquid separator 5 is entered The further gas-liquid separation of row, can avoid liquid coolant to return in the second cylinder 12 further, thus avoid There is liquid hit phenomenon in duplex cylinder compressor 1, improves the service life of duplex cylinder compressor 1.

Single cold type air-conditioner 100 according to this utility model embodiment, by arranging above-mentioned duplex cylinder compressor 1, Energy efficiency of air conditioner can be effectively improved, effectively facilitate energy-saving and emission-reduction, simultaneously by arranging gas-liquid separator 5, Heat exchange efficiency can be improved, reduce compressor compresses power consumption, improve air-conditioner ability and efficiency further, again By arranging the second reservoir 14, the service life of duplex cylinder compressor can be extended.

As in figure 2 it is shown, in embodiments more of the present utility model, gas outlet m and the second reservoir Electromagnetic valve 20 it is in series with between 14, thus when the liquid coolant in gas-liquid separator 5 is beyond safety levels, Liquid refrigerants can be avoided to enter in the second cylinder 12 by closing electromagnetic valve 20, such that it is able to avoid double There is liquid hammer in cylinder compressor 1, extends the service life of duplex cylinder compressor 1.It is possible to further at gas On liquid/gas separator 5, liquid level sensor is set, controls electromagnetic valve 20 by the testing result of liquid level sensor Open and-shut mode.

In embodiments more of the present utility model, the span of the volume of gas-liquid separator 5 is 100mL-500mL。

In embodiments more of the present utility model, the volume of the first reservoir 13 is more than the second reservoir 14 Volume.Thus on the premise of the decrement ensureing the second cylinder 12, by making the second reservoir 14 Volume less, cost can be reduced.Preferably, the volume of the second reservoir 14 is not more than the first liquid storage / 2nd of device 13 volume.

Single cold type air-conditioner according to this utility model above-described embodiment (is set specified refrigeration by utility model people Amount is 3.5kw, and the delivery space ratio of the second cylinder and the first cylinder is set as 7.6%) in different operating modes Under efficiency compare with existing single cold type air-conditioner efficiency at the same conditions, counted as follows According to:

It follows that according to the single cold type air-conditioner of this utility model embodiment relative to existing single cold type pressure Contracting machine, each operating mode efficiency and annual efficiency APF are all obviously improved.

This utility model of different specified refrigerating capacitys and different delivery space ratio is implemented by utility model people simultaneously The single cold type air-conditioner of example compares with the single cold type air-conditioner under existing identical operating mode, finds that efficiency is equal Have lifting, through overtesting, such as utility model people finds that the single cold type air-conditioner of this utility model embodiment (sets Quota customization cold is 2.6kw, and the delivery space ratio of the second cylinder and the first cylinder is set as 9.2%) Compared with the single cold type air-conditioner under existing identical operating mode, efficiency improves 7.3%.

The control of the single cold type air-conditioner according to this utility model embodiment is described in detail below with reference to Fig. 1-Fig. 4 Method processed, wherein single cold type air-conditioner is the single cold type air-conditioner according to this utility model above-described embodiment.

The control method of the single cold type air-conditioner according to this utility model embodiment, comprises the steps: refrigeration During operation, the aperture according to the testing result adjustment first throttle element to the first detection object is to setting aperture. It is to say, during refrigeration, acquisition process controls the parameter needed for first throttle element, and then basis obtains The aperture of state modulator first throttle element is until meeting condition.

Wherein the first detection object includes outdoor environment temperature, the running frequency of duplex cylinder compressor, air vent Delivery temperature, the pressure at expulsion of air vent, from gas outlet discharge coolant intermediate pressure, go out from gas At least one in the medium temperature of coolant of mouth discharge, gas-liquid separator temperature, pressure of the gas and liquid separator. Needing to illustrate, intermediate pressure and medium temperature can connect gas outlet and the second storage by detection Coolant in the pipeline of liquid device draws.

After the aperture of first throttle element meets condition, can be after running the n second, detection the first inspection again Survey object, then adjust the aperture of first throttle element according to testing result, so repeat.Certainly bar is repeated Part is not limited to this, such as can be after receiving the operational order of user, detection the first detection object again, Then the aperture of first throttle element is adjusted according to testing result.In other words, when refrigeration, at first throttle After the aperture of element meets condition, the n second can run or after receiving the operation signal of user, right The relevant parameter of the aperture of first throttle element detects judgement again, then adjusts first segment according to result of determination The aperture of fluid element, so repeats.

The control method of the single cold type air-conditioner according to this utility model embodiment, can well control first The aperture of restricting element arrives presets aperture, reaches optimum energy-saving effect.

The control method according to this utility model embodiment is described below in detail as a example by six specific embodiments.

Embodiment 1:

In this embodiment, the first detection object is outdoor environment temperature T4 and delivery temperature, first basis The outdoor environment temperature T4 detected obtains running frequency F, and according to the outdoor environment temperature T4 detected Being calculated setting delivery temperature with running frequency F, then adjusting the aperture of first throttle element so that examining The delivery temperature measured reaches to set delivery temperature.It is understood that computing formula is located at single cold type in advance In the electric control element of air-conditioner, computing formula specifically can limit according to practical situation.

Specifically, when the first detection object is outdoor environment temperature T4 and delivery temperature, during refrigeration start Detection outdoor environment temperature T4, determines running frequency F of compressor, determines according to T4 and F and set according to T4 Determining delivery temperature TP, wherein TP=a1*F+b1+c1*T4, the span of a1, b1, c1 can be with outdoor Ambient temperature T4 is corresponding, such as 20 DEG C >=T4: a1 takes-10--10；B1 takes-100--100；c1 Take-10 10；When 20 DEG C of ＜ T4≤30 DEG C: a1 takes-8--8；B1 takes-80--80；C1 takes-8 8； When 30 DEG C of ＜ T4≤40 DEG C: a1 takes-9--9；B1 takes-90--90；C1 takes-6 6；As 40 DEG C of ＜ T4 When≤50 DEG C: a1 takes-8--8；B1 takes-90--90；C1 takes-5 5；As 50 DEG C of ＜ T4: a1 takes -10--10；B1 takes-100--100；C1 takes-5 5.Of course, it should be understood that a1, b1, c1 Value is not limited to this, such as can also be unrelated with outdoor environment temperature T4, but set in advance in system.

It should be noted that when a1, b1 one of them or time simultaneously value is 0, it is believed that formula above In unrelated with this parameter, such as a1=0, i.e. think unrelated with frequency F.

Then according to the operation aperture of TP regulation first throttle element.First throttle element regulation is steady after putting in place Fixed operation.Again detect outdoor temperature T4 after the n second whether to change or whether user has operation, then Aperture according to associated change regulation first throttle element.

Such as, refrigerating operaton of starting shooting, detect that T4 temperature is 35 DEG C, inquire about corresponding compressor under this T4 Running frequency should be 90HZ, and the delivery temperature coefficient a1 in corresponding temperature interval is 0.6, b1 is 20, c1 is 0.2, calculate setting delivery temperature TP=0.6*90+20+0.2*35=81, according to setting delivery temperature Tp=81 DEG C, regulate first throttle element aperture: the TP detected under initial opening has reached 90 degree, then Open big first throttle element, reach to set the first throttle element aperture that delivery temperature Tp=81 DEG C is corresponding, also That is make the delivery temperature detected reach to set delivery temperature.First throttle element reaches target aperture Rear stable operation.Detect T4 after the n second to be not changed in, continue stable operation.

In this embodiment, the running frequency of compressor is determined by outdoor environment temperature, such as predetermined many Individual outdoor environment temperature is interval, multiple outdoor environment temperature intervals corresponding multiple compressor operating frequencies respectively, The outdoor environment temperature at the outdoor environment temperature place that inquiry detects is interval, i.e. can get corresponding compressor Running frequency.Of course, it should be understood that the running frequency of compressor can also be by setting on the compressor Detect device and detect.

Embodiment 2:

In this embodiment, the first detection object is outdoor environment temperature T4 and pressure at expulsion, first basis The outdoor environment temperature T4 detected obtains running frequency F, and according to the outdoor environment temperature T4 detected Being calculated setting pressure at expulsion with running frequency F, then adjusting the aperture of first throttle element so that examining The pressure at expulsion measured reaches to set pressure at expulsion.

Specifically, when the first detection object is outdoor environment temperature T4 and pressure at expulsion, during refrigeration start Detection outdoor environment temperature T4, determines running frequency F of compressor, determines according to T4 and F and set according to T4 Determine pressure at expulsion Pp；Wherein Pp=a3*F+b3+c3*T4；The span of a3, b3, c3 can be with outdoor Ambient temperature T4 is corresponding, such as 20 DEG C >=T4: a3 takes-5--5；B3 takes-8--8；C3 takes-1 1； When 20 DEG C of ＜ T4≤30 DEG C: a3 takes-5 5；B3 takes-10--10；C3 takes-2 2；As 30 DEG C of ＜ T4 When≤40 DEG C: a3 takes-5--5；B3 takes-12--12；C3 takes-3 3；When 40 DEG C of ＜ T4≤50 DEG C: A3 takes-6--6；B3 takes-15--15；C3 takes-4 4；As 50 DEG C of ＜ T4: a3 takes-7--7；B3 takes -20--20；C3 takes-5 5.Of course, it should be understood that the value of a3, b3, c3 is not limited to this, example As can also be unrelated with outdoor environment temperature T4, but set in advance in system.It should be noted that When a3, b3 one of them or time simultaneously value is 0, it is believed that unrelated with this parameter in formula above, Such as a3=0, i.e. think unrelated with frequency F.

Then according to the operation aperture of Pp regulation first throttle element.First throttle element regulation is steady after putting in place Fixed operation.Again detect outdoor temperature T4 after the n second whether to change or whether user has operation, then First throttle element aperture is regulated according to associated change.

Such as start shooting refrigerating operaton, detect that T4 temperature is 35 DEG C, inquire about corresponding compressor fortune under this T4 Line frequency should be 80HZ, and the pressure at expulsion coefficient a3 in corresponding temperature interval is 0.02, b3 is 0.7, c3 is 0.02, calculate pressure at expulsion Pp=0.02*80+0.7+0.02*35=3.0, according to setting pressure at expulsion Pp=3.0MPa regulates first throttle element aperture: detect that pressure at expulsion Pp reaches under initial opening 2.5MPa, then turn down first throttle element, reaches to set the first throttle that pressure at expulsion Pp=3.0MPa is corresponding Element aperture, say, that make the pressure at expulsion detected reach to set pressure at expulsion.First throttle element Reach stable operation after target aperture, detect T4 after the n second and be not changed in, continue stable operation.

Embodiment 3:

In this embodiment, the first detection object is outdoor environment temperature T4, first according to the room detected External environment temperature T4 obtains running frequency F, and according to the outdoor environment temperature T4 detected and running frequency F is calculated the setting aperture of first throttle element, and the aperture then adjusting first throttle element is opened to setting Degree.

Specifically, when the first detection object is outdoor environment temperature T4, sensing chamber's outer shroud when refrigeration starts Border temperature T4；Determine compressor operating frequency F according to T4, determine first throttle element according to T4 and F Set aperture Lr；Wherein set aperture Lr=a5*F+b5+c5*T4；The wherein span of a5, b5, c5 Can be corresponding with outdoor environment temperature T4, such as preset different outdoor environment temperature intervals corresponding different The span of a5, b5, c5, then can limit the value of a5, b5, c5 according to practical situation.

Compare setting aperture Lr and the difference of first throttle element initial opening of first throttle element, such as one Cause, need not regulate, as inconsistent, then be adjusted to set aperture Lr.After first throttle element regulation puts in place Stable operation.Again detect outdoor temperature T4 after the n second whether to change or whether user has operation, so First throttle element aperture is regulated afterwards according to associated change.

Embodiment 4:

In this embodiment, preset multiple outdoor temperatures interval, the corresponding different gas in each outdoor temperature interval The temperature of liquid/gas separator, the first detection object is the temperature of outdoor environment temperature T4 and gas-liquid separator, first First according to actually detected to the outdoor environment temperature T4 gas-liquid that obtains the outdoor temperature interval at place corresponding divide From the design temperature of device, then adjust the aperture of first throttle element until the actually detected gas-liquid separator arrived Temperature meet design temperature.

Specifically, when the temperature that the first detection object is outdoor environment temperature T4 and gas-liquid separator, system Detection outdoor environment temperature T4 and temperature Ts of gas-liquid separator when cold boot runs, according to the room detected External environment temperature T4 inquires about the design temperature of gas-liquid separator corresponding to corresponding outdoor temperature interval, such as The corresponding relation of the interval design temperature with gas-liquid separator of outdoor temperature can be such that as 20 DEG C >=T4: Ts takes 0 30；When 0 DEG C of ＜ T4≤30 DEG C: Ts takes 0 40；When 30 DEG C of ＜ T4≤40 DEG C: Ts takes 0 50； When 40 DEG C of ＜ T4≤50 DEG C: Ts takes 0 60；As 50 DEG C of ＜ T4: Ts takes 0 65.It is of course possible to Being understood by, above-mentioned numerical value is exemplary illustration, and is not to concrete restriction of the present utility model.

Then the aperture of first throttle element is adjusted so that temperature Ts of the gas-liquid separator detected meets Design temperature.

Such as start shooting refrigerating operaton, detect that T4 temperature is 35 DEG C, inquire about corresponding gas-liquid under this T4 interval Separator temperature Ts should be 26 DEG C, detects that temperature Ts of gas-liquid separator reaches under initial opening 20 DEG C, then open big first throttle element, reach the first throttle element aperture that design temperature Ts=26 DEG C is corresponding, That is temperature Ts making the gas-liquid separator detected reaches design temperature.First throttle element reaches Stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable operation.

Embodiment 5:

In this embodiment, the first detection object is outdoor environment temperature T4 and intermediate pressure；First basis The outdoor environment temperature T4 detected obtains running frequency F, and according to the outdoor environment temperature T4 detected Being calculated setting intermediate pressure with running frequency F, then adjusting the aperture of first throttle element so that examining The intermediate pressure measured reaches to set intermediate pressure.

Specifically, the relational expression between intermediate pressure Ps and outdoor environment temperature T4 and running frequency F is set Can be Ps=a7*F+b7+c7*T4, wherein the span of a7, b7, c7 can be with outdoor environment temperature T4 is corresponding, such as, preset the value district of different outdoor environment temperature intervals corresponding different a7, b7, c7 Between, the value of a7, b7, c7 then can be limited according to practical situation.

Embodiment 6:

In this embodiment, preset multiple outdoor temperatures interval, the corresponding different gas in each outdoor temperature interval The pressure of liquid/gas separator, the first detection object is the pressure of outdoor environment temperature T4 and gas-liquid separator, first First according to actually detected to the outdoor environment temperature T4 gas-liquid that obtains the outdoor temperature interval at place corresponding divide From the setting pressure of device, then adjust the aperture of first throttle element until the actually detected gas-liquid separator arrived Pressure meet set pressure.

Specifically, when the pressure that the first detection object is outdoor environment temperature T4 and gas-liquid separator, system Detection outdoor environment temperature T4 and the pressure Ps of gas-liquid separator when cold boot runs, according to the room detected External environment temperature T4 inquires about the setting pressure of gas-liquid separator corresponding to corresponding outdoor temperature interval, such as The interval corresponding relation setting pressure with gas-liquid separator of outdoor temperature can be such that as 20 DEG C >=T4: Ps takes 0.1 8；When 20 DEG C of ＜ T4≤30 DEG C: Ps takes 0.1 10；When 30 DEG C of ＜ T4≤40 DEG C: Ps takes 0.1 15；When 40 DEG C of ＜ T4≤50 DEG C: Ps takes 0.1 20；As 50 DEG C of ＜ T4: Ps Take 0.1 25.Of course, it should be understood that above-mentioned numerical value is exemplary illustration, and it is not to this reality With novel concrete restriction.

Then the aperture of first throttle element is adjusted so that the pressure Ps of the gas-liquid separator detected meets Set pressure.

Such as start shooting refrigerating operaton, detect that T4 temperature is 50 DEG C, inquire about corresponding gas-liquid under this T4 interval The setting pressure Ps of separator should be 2.0MPa, the pressure Ps of the gas-liquid separator detected under initial opening Reach 2.2MPa, then turned down first throttle element, reached to set pressure Ps=2.2MPa corresponding first Restricting element aperture, say, that the pressure Ps of the gas-liquid separator detected is met and sets pressure. First throttle element reaches stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable Run.

It is understood that illustrating of being merely given as of above-mentioned six specific embodiments, this utility model is real The control method executing example is not limited to above-mentioned six kinds, by calculated setting exhaust pressure in above-described embodiment The setup parameters such as power, setting delivery temperature, setting aperture, setting intermediate pressure can also be adopted in other ways Draw, such as, it is interval that different outdoor temperatures can be set, the corresponding no setting in multiple outdoor temperature intervals Parameter, according to actually detected to the outdoor temperature interval at outdoor environment temperature place set the most accordingly Determine parameter.Will also be appreciated that consulting the parameter obtained can also pass through above by outdoor environment temperature The computing formula preset draws.

In this utility model, unless otherwise clearly defined and limited, fisrt feature is in second feature On " " or D score can be that the first and second features directly contact, or the first and second features are passed through Intermediary mediate contact.And, fisrt feature second feature " on ", " top " and " on Face " but fisrt feature directly over second feature or oblique upper, or be merely representative of fisrt feature level Highly higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " Can be fisrt feature immediately below second feature or obliquely downward, or it is high to be merely representative of fisrt feature level Degree is less than second feature.

In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", It is concrete that the description of " concrete example " or " some examples " etc. means to combine this embodiment or example describes Feature, structure, material or feature are contained at least one embodiment of the present utility model or example.? In this specification, the schematic representation of above-mentioned term is necessarily directed to identical embodiment or example. And, the specific features of description, structure, material or feature can be with one or more embodiments in office or show Example combines in an appropriate manner.Additionally, in the case of the most conflicting, those skilled in the art can Carry out with the feature of the different embodiments described in this specification or example and different embodiment or example In conjunction with and combination.

Although above it has been shown and described that embodiment of the present utility model, it is to be understood that above-mentioned reality It is exemplary for executing example, it is impossible to be interpreted as that, to restriction of the present utility model, those of ordinary skill in the art exists Above-described embodiment can be changed in the range of this utility model, revise, replace and modification.

Claims

1. a single cold type air-conditioner, it is characterised in that including:

Duplex cylinder compressor, described duplex cylinder compressor includes housing, the first cylinder, the second cylinder, the first liquid storage Device and the second reservoir, described housing is provided with air vent, described first cylinder and described second cylinder respectively Being located in described housing, described first reservoir and described second reservoir are located at outside described housing, and described The air entry of one cylinder connects with described first reservoir, the air entry of described second cylinder and described second storage Liquid device connects, and the span of the delivery space ratio of described second cylinder and described first cylinder is 1%～10%；

Outdoor heat exchanger and indoor heat exchanger, the first end of described outdoor heat exchanger is connected with described air vent, First end of described indoor heat exchanger is connected with described first reservoir；

Gas-liquid separator, described gas-liquid separator includes gas outlet, first interface and the second interface, described Gas outlet is connected with described second reservoir, the second end phase of described first interface and described outdoor heat exchanger Even, described second interface is connected with the second end of described indoor heat exchanger, described first interface and described outdoor Aperture adjustable first throttle element, described second interface and described indoor heat exchanger it is in series with between heat exchanger Between be in series with the second section fluid element of fixing aperture.

Single cold type air-conditioner the most according to claim 1, it is characterised in that described first throttle unit Part is electric expansion valve, and described second section fluid element is capillary tube or choke valve.

Single cold type air-conditioner the most according to claim 1, it is characterised in that described gas outlet and It is in series with electromagnetic valve between described second reservoir.

Single cold type air-conditioner the most according to claim 1, it is characterised in that described gas-liquid separator The span of volume be 100mL-500mL.

5. according to the single cold type air-conditioner according to any one of claim 1-4, it is characterised in that described The volume of the first reservoir is more than the volume of described second reservoir.