CN205641636U

CN205641636U - Heating and cooling air conditioner

Info

Publication number: CN205641636U
Application number: CN201620388384.3U
Authority: CN
Inventors: 李金波; 戚文端; 曾祥兵; 刘湍顺; 杨亚新; 任超; 孙兴
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 heating and cooling air conditioner, include: double -cylinder compressor, switching -over subassembly, 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%, the switching -over subassembly includes first valve port to fourth valve port, and the fourth valve port links to each other with first reservoir, 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 a throttling element of fixed aperture to establish ties between first interface and the outdoor heat exchanger, and it has the 2nd throttling element of aperture adjustable to establish ties between second interface and the indoor heat exchanger. According to the utility model discloses a heating and cooling air conditioner effectively improves the air conditioner efficiency.

Description

Heating and air conditioner

Technical field

The utility model relates to refrigerating field, especially relates to a kind of heating and air conditioner.

Background technology

Current air-conditioning refrigeration system not to after throttling and the gaseous refrigerant entering before evaporimeter be optimized cyclic design, cause gaseous refrigerant to affect evaporimeter heat exchange property, and increase compressor compresses power consumption, thereby having influence on air-conditioner efficiency level. air injection enthalpy-increasing and Two-stage Compression technology can improve the heating capacity level of air-conditioning system under low temperature and ultralow temperature, but the cooling condition often using for air-conditioning, efficiency promotes very limited.

Utility model content

The utility model is intended to solve at least to a certain extent one of technical problem in correlation technique.

For this reason, the utility model proposes a kind of heating and air conditioner, can effectively improve air-conditioner efficiency, effectively promote energy-saving and emission-reduction.

According to the heating and air conditioner of the utility model embodiment, comprising: duplex cylinder compressor, described twin-tub is pressed Contracting machine comprises housing, the first cylinder, the second cylinder, the first reservoir and the second reservoir, on described housing Be provided with exhaust outlet, described the first cylinder and described the second cylinder are located at respectively in described housing, described the first storage Liquid device and described the second reservoir are located at outside described housing, the air entry of described the first cylinder and described the first storage Liquid device is communicated with, and the air entry of described the second cylinder is communicated with described the second reservoir, described the second cylinder and institute The span of stating the delivery space ratio of the first cylinder is 1%～10%; Commutation assembly, described commutation assembly Comprise the first valve port to the four valve ports, one of them in described the first valve port and the second valve port and the 3rd valve port Be communicated with, described the 4th valve port is communicated with another in described the second valve port and described the 3rd valve port, and described the One valve port is connected with described exhaust outlet, and described the 4th valve port is connected with described the first reservoir; Outdoor heat exchanger And indoor heat exchanger, the first end of described outdoor heat exchanger is connected with described the second valve port, described indoor heat exchange The first end of device is connected with described the 3rd valve port; Gas-liquid separator, described gas-liquid separator comprise gas vent, First interface and the second interface, described gas vent is connected with described the second reservoir, described first interface with The second end of described outdoor heat exchanger is connected, the second end phase of described the second interface and described indoor heat exchanger Connect, between described first interface and described outdoor heat exchanger, be in series with the first throttle element of fixing aperture, institute State and between the second interface and described indoor heat exchanger, be in series with the adjustable second section fluid element of aperture.

According to the heating and air conditioner of the utility model embodiment, by above-mentioned duplex cylinder compressor is set, can effectively improve air-conditioner efficiency, effectively promote energy-saving and emission-reduction, by gas-liquid separator is set, can improve heat exchange efficiency simultaneously, reduce compressor compresses power consumption, further improve air-conditioner ability and efficiency, by the second reservoir is set, can extend the service life of duplex cylinder compressor again.

In embodiment more of the present utility model, described first throttle element is capillary or choke valve, and described second section fluid element is electric expansion valve.

In embodiment more of the present utility model, between described gas vent and described the second reservoir, be in series with magnetic valve.

In embodiment more of the present utility model, the span of gas-liquid separator volume is 100mL-500mL.

In embodiment more of the present utility model, the volume of described the first reservoir is greater than the volume of the second reservoir.

Brief description of the drawings

Fig. 1 is according to the schematic diagram of the heating and air conditioner of the utility model embodiment;

Fig. 2 is according to the schematic diagram of the heating and air conditioner that is provided with magnetic valve of the utility model embodiment;

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

Fig. 4 is according to the flow process of the control method in heating and air conditioner when refrigeration of the utility model embodiment Figure;

Fig. 5 is the flow chart of the control method while heating according to the heating and air conditioner of the utility model embodiment.

Reference numeral:

Heating and air conditioner 100,

Duplex cylinder compressor 1, housing 10, the first cylinder 11, the second cylinder 12, the first reservoir 13, the second reservoir 14, exhaust outlet 15,

Commutation assembly 2, the first valve port D, the second valve port C, the 3rd valve port E, the 4th valve port S,

Outdoor heat exchanger 3, indoor heat exchanger 4,

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

First throttle element 6, second section fluid element 7,

Magnetic valve 20.

Detailed description of the invention

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

In description of the present utility model, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " perpendicular directly ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " footpath to ", orientation or the position relationship of instructions such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must there is specific orientation, with specific orientation structure and operation, therefore can not be interpreted as this practicality new the restriction of type.

In addition, term " first ", " second " are only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity that indicates indicated technical characterictic. thus, at least one this feature can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ". in description of the present utility model, the implication of " multiple " is at least two, for example two, three etc., unless otherwise expressly limited specifically.

In the utility model, unless otherwise clearly defined and limited, term " installation ", " being connected ", The term such as " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also can Dismounting connects, or integral; Can be mechanical connection, can be also electrical connection or each other can communication; Can Being to be directly connected, also can being indirectly connected by intermediary, can be the connection or two of two element internals The interaction relationship of individual element, unless separately there is clear and definite restriction. for those of ordinary skill in the art and Speech, can understand the concrete meaning of above-mentioned term in the utility model as the case may be.

Describe in detail according to the heating and air conditioner 100 of the utility model embodiment below with reference to Fig. 1-Fig. 3, wherein heating and air conditioner 100 has refrigeration mode and heating mode.

As shown in Figure 1-Figure 3, according to the heating and air conditioner 100 of the utility model embodiment, comprise: two cylinder compressor 1, commutation assembly 2, outdoor heat exchanger 3 and indoor heat exchanger 4, gas-liquid separator 5, first restricting element 6 and second section fluid element 7. wherein duplex cylinder compressor 1 comprise housing 10, the first cylinder 11, the second cylinder 12, the first reservoir 13 and the second reservoir 14, housing 10 is provided with exhaust outlet 15, the one cylinder 11 and the second cylinder 12 are located at respectively in housing 10, the first reservoir 13 and the second reservoir 14 are located at outside housing 10, the air entry of the first cylinder 11 is communicated with the first reservoir 13, the second cylinder 12 air entry be communicated with the second reservoir 14. that is to say, the first cylinder 11 and the second cylinder 12 carry out independent compression process, the gas coolant of separating from the first reservoir 13 is drained in the first cylinder 11 row compression, the gas coolant of separating from the second reservoir 14 is drained in the second cylinder 12 and compresses, refrigerant refrigerant the compression of discharging from the first cylinder 11 and the compression of discharging from the second cylinder 12 respectively be drained in housing 10 and then discharge from exhaust outlet 15.

The span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～10%. further, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is 1%～9%, preferably, the span of the delivery space ratio of the second cylinder 12 and the first cylinder 11 is that the delivery space ratio of 4%～9%. for example the second cylinder 12 and the first cylinder 11 can be the parameter such as 4%, 5%, 8% or 8.5%.

Commutation assembly 2 comprises the first valve port D to the four valve port S, the first valve port D and the second valve port C and one of them connection in three valve port E, in the 4th valve port S and the second valve port C and described the 3rd valve port E another connection, the first valve port D is connected with exhaust outlet 15, the 4th valve port S is connected with the first reservoir 13. the first end of outdoor heat exchanger 3 is connected with the second valve port C, the first end of indoor heat exchanger 4 and the 3rd valve port E is connected. particularly, in the time that heating and air conditioner 100 is freezed, the first valve port D is communicated with the second valve port C and the 3rd valve port E is communicated with the 4th valve port S, in the time that heating and air conditioner 100 heats, the first valve port D be communicated with the 3rd valve port E and the second valve port C is communicated with the 4th valve port S. preferably, commutation assembly 2 is four logical valve.

Gas-liquid separator 5 comprises gas vent m, first interface f and the second interface g, gas vent m is connected with the second reservoir 14, first interface f is connected with the second end of outdoor heat exchanger 3, the second interface g is connected with the second end of indoor heat exchanger 4, between first interface f and outdoor heat exchanger 3, be in series with between first throttle element 6, the second interface g of fixing aperture and indoor heat exchanger 4 and be in series with the adjustable second section fluid element 7. of aperture

Alternatively, first throttle element 6 is capillary or choke valve, and second section fluid element 7 is electric expansion valve, certainly can understand, and second section fluid element 7 can also be such as heating power expansion valve of the adjustable element of other apertures.

In the time that heating and air conditioner 100 is freezed, the high temperature of discharging from the exhaust outlet 15 of duplex cylinder compressor 1 is high press refrigerant to be drained into and in outdoor heat exchanger 3, to carry out condensation heat radiation by the first valve port D and the second valve port C, from the high-pressure liquid refrigerant that outdoor heat exchanger 3 is discharged after the one-level reducing pressure by regulating flow of first throttle element 6 from one interface f is drained into and in gas-liquid separator 5, carries out gas-liquid separation, the intermediate pressure gaseous coolant of separating be drained into the second reservoir 14 and carry out further gas-liquid separation from gas vent m, afterwards gaseous coolant from the second reservoir 14 is drained in the second cylinder 12 and compresses.

The intermediate pressure liquid refrigerants of discharging from the second interface g of gas-liquid separator 5 is drained in indoor heat exchanger 4 and carries out heat exchange to reduce indoor environment temperature after the two-step throttle step-down of second section fluid element 7, the refrigerant of discharging from indoor heat exchanger 4 is drained into the first reservoir 13 by the 3rd valve port E and the 4th valve port S, and the refrigerant of discharging from the first reservoir 13 is drained in the first cylinder 11 and compresses.

In the time that heating and air conditioner 100 heats, the high temperature of discharging from the exhaust outlet 15 of duplex cylinder compressor 1 is high press refrigerant to be drained in indoor heat exchanger 4 and to carry out condensation heat radiation to rise by the first valve port D and the 3rd valve port E high indoor environment temperature, the high-pressure liquid refrigerant of discharging from indoor heat exchanger 4 is through second section fluid element 7 one-level reducing pressure by regulating flow after be drained into and gas-liquid separator 5, carry out gas-liquid separation from the second interface g, isolate the intermediate pressure gaseous coolant coming is drained into the second reservoir 14 and carries out further gas-liquid from gas vent m separate, gaseous coolant is drained in the second cylinder 12 and compresses from the second reservoir 14 afterwards.

The intermediate pressure liquid refrigerants of discharging from the first interface f of gas-liquid separator 5 is drained into and in outdoor heat exchanger 3, carries out heat exchange after the two-step throttle step-down of first throttle element 6, the refrigerant of discharging from outdoor heat exchanger 3 is drained into the first reservoir 13 by the second valve port C and the 4th valve port S, and the refrigerant of discharging from the first reservoir 13 is drained in the first cylinder 11 and compresses.

Hence one can see that, in the time that heating and air conditioner 100 is moved, the refrigerant of different pressures state enters into respectively in the first cylinder 11 and the second cylinder 12, the first cylinder 11 and the second cylinder 12 complete independently compression processes, refrigerant refrigerant the compression of discharging from the first cylinder 11 and the compression of discharging from the second cylinder 12 is discharged to after the interior mixing of housing 10, discharge from exhaust outlet 15, while is due to the row of the second cylinder 12 and the first cylinder 11 the span of air space ratio is 1%～10%, the refrigerant that flow is less and pressure state is higher is drained into row in less the second cylinder 12 of air space, compress, thereby can improve efficiency, energy-saving and emission-reduction.

Simultaneously by be provided with gas-liquid separator 5 between outdoor heat exchanger 3 and indoor heat exchanger 4, thereby gas-liquid separator 5 is expelled back in the second cylinder 12 and compresses after a part of gaseous coolant is separated, reduce thus the gas content in the refrigerant that flow into indoor heat exchanger 4 while refrigeration and reduced the gas content in the refrigerant that flow into outdoor heat exchanger 3 while heating, reduce the impact of the heat exchange property of gaseous coolant on the indoor heat exchanger 4 as evaporimeter or outdoor heat exchanger 3, thereby can improve heat exchange efficiency, reduce compressor compresses power consumption.

Again owing to being provided with the second reservoir 14, thereby can carry out further gas-liquid separation to the refrigerant of discharging from gas-liquid separator 5, can further avoid liquid coolant to get back in the second cylinder 12, thereby avoid duplex cylinder compressor 1 that liquid hit phenomenon occurs, improve the service life of duplex cylinder compressor 1.

According to the heating and air conditioner 100 of the utility model embodiment, by above-mentioned duplex cylinder compressor 1 is set, can effectively improve air-conditioner efficiency, effectively promote energy-saving and emission-reduction, by gas-liquid separator 5 is set, can improve heat exchange efficiency simultaneously, reduce compressor compresses power consumption, further improve air-conditioner ability and efficiency, by the second reservoir 14 is set, can extend the service life of duplex cylinder compressor again.

Can improve heat exchange efficiency, reduce compressor compresses power consumption, further improve air-conditioner ability and efficiency, again between 14, be in series with magnetic valve 20, thus in the time that the liquid coolant in gas-liquid separator 5 exceeds safe liquid level, can avoid liquid refrigerants to enter into the second cylinder 12 by shut electromagnetic valve 20, thereby can avoid two there is liquid hammer in cylinder compressor 1, extend the service life of duplex cylinder compressor 1. further, can be at gas on liquid/gas separator 5, liquid level sensor is set, testing result control magnetic valve 20 by liquid level sensor open and-shut mode.

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

In embodiment more of the present utility model, thereby the volume of the first reservoir 13 is greater than the volume of the second reservoir 14. under the prerequisite of decrement that ensures the second cylinder 12, by making the volume of the second reservoir 14 less, can reduce costs. preferably, the volume of the second reservoir 14 is not more than 1/2nd, of the first reservoir 13 volumes

Utility model people is by according to the heating and air conditioner of the utility model above-described embodiment, (setting specified refrigerating capacity is 3.5kw, the delivery space ratio of the second cylinder and the first cylinder is set as to 7.6%) efficiency under different operating modes compares with the efficiency of existing heating and air conditioner under identical operating mode, obtains following data:

Hence one can see that, and according to the heating and air conditioner of the utility model embodiment, with respect to existing cold-warm type compressor, each operating mode efficiency and annual efficiency APF all have obvious lifting.

Utility model people compares the heating and air conditioner of the utility model embodiment of specified difference refrigerating capacity and different delivery space ratio with the heating and air conditioner under existing identical operating mode simultaneously, find that efficiency all has lifting, for example utility model people finds that through overtesting (setting specified refrigerating capacity is 2.6kw for the heating and air conditioner of the utility model embodiment, the delivery space ratio of the second cylinder and the first cylinder is set as to 9.2%) to compare with the heating and air conditioner under existing identical operating mode, efficiency has promoted 7.3%.

Describe in detail according to the control method of the heating and air conditioner of the utility model embodiment below with reference to Fig. 1-Fig. 5, wherein heating and air conditioner is according to the heating and air conditioner of the utility model above-described embodiment.

According to the control method of the heating and air conditioner of the utility model embodiment, while comprising the steps: refrigerating operaton according to the aperture that the testing result of the first detected object is adjusted to second section fluid element to setting aperture. the intermediate pressure of the delivery temperature of pressure, exhaust outlet, the refrigerant of discharging from gas vent, from gas vent degree of arranging. that is to say, when freezing and heating, all required parameters of acquisition process control second section fluid element, the aperture of the parameter control second section fluid element that then basis obtains is until satisfy condition.

Wherein the first detected object comprises at least one medium temperature, gas-liquid separation actuator temperature, pressure of the gas and liquid separator of the intermediate pressure of the pressure at expulsion of delivery temperature, the exhaust outlet of running frequency, the exhaust outlet of outdoor environment temperature, duplex cylinder compressor, the refrigerant of discharging from gas vent, the refrigerant of discharging from gas vent.

The second detected object comprises outdoor environment temperature, the running frequency of duplex cylinder compressor, the exhaust of exhaust outlet when heating operation, extremely set according to the aperture of the testing result of the second detected object being adjusted to second section fluid element the medium temperature of the refrigerant going out, gas-liquid separation actuator temperature, at least one in pressure of the gas and liquid separator. can what understand is, the first detected object and the second detected object can be the same or different. need to describe be, intermediate pressure can be connected in the pipeline of gas vent and the second reservoir by detection with medium temperature refrigerant draw.

After the aperture of second section fluid element satisfies condition, can be after operation n second, again detect the first inspection survey object or the second detected object, then adjust the aperture of second section fluid element according to testing result, so heavy describe in detail according to the control method of the utility model embodiment as an example of six specific embodiments example below. repeat condition is not limited to this certainly, for example can receive after user's operational order, again detect the first detected object or the second detected object, then adjust the aperture of second section fluid element according to testing result. in other words, in the time freezing or heat, after the aperture of second section fluid element satisfies condition, can be in operation n second or receiving after user's operation signal, the relevant parameter of the aperture to second section fluid element again detect judgement, then adjust the aperture of second section fluid element according to result of determination, so repeat.

According to the control method of the heating and air conditioner of the utility model embodiment, the aperture that can well control second section fluid element arrives default aperture, reaches optimum energy-saving effect.

It is multiple.

Embodiment 1:

In this embodiment, the first detected object and/or the second detected object are outdoor environment temperature T4 and delivery temperature, first obtain running frequency F according to the outdoor environment temperature T4 detecting, and calculate setting delivery temperature according to the outdoor environment temperature T4 detecting and running frequency F, then the aperture of adjusting second section fluid element reaches setting delivery temperature with the delivery temperature that makes to detect. is understandable that, computing formula is located in the electric control element of heating and air conditioner in advance, and computing formula can specifically limit according to actual conditions.

Get-10 10 Sensing chamber's external environment temperature T 4, determines the running frequency F of compressor according to T4, determine and establish according to T4 and F Determine delivery temperature TP, wherein TP=a1*F+b1+c1*T4, the span of a1, b1, c1 can be with outdoor Environment temperature T4 correspondence, for example, in the time of 20 DEG C >=T4: get-10--10 of a1; Get-100--100 of b1; C1 Particularly, in the time that the first detected object is outdoor environment temperature T4 and delivery temperature, when refrigeration start; In the time of 20 DEG C of < T4≤30 DEG C: get-8--8 of a1; Get-80--80 of b1; C1 gets-8 8; In the time of 30 DEG C of < T4≤40 DEG C: get-9--9 of a1; Get-90--90 of b1; C1 gets-6 6; As 40 DEG C of < T4 ≤ 50 DEG C time: get-8--8 of a1; Get-90--90 of b1; C1 gets-5 5; In the time of 50 DEG C of < T4: a1 gets-10--10; Get-100--100 of b1; C1 gets-5 5. and certainly can understand, a1, b1, c1's Value is not limited to this, for example can also be irrelevant with outdoor environment temperature T4, but predefined in system.

It should be noted that, when a1, b1 one of them or when simultaneously value is 0, can think that above formula second section fluid element regulates after putting in place steady.

Then regulate the operation aperture of second section fluid element according to TP. in this cache oblivious, for example, in the time of a1=0, think and the irrelevant .Again detect outdoor temperature T4 after the n second whether to change or whether user has operation that surely moves of frequency F, then regulates the aperture of second section fluid element according to associated change.

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, 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 temperatureTp=81 DEG C, regulate second section fluid element aperture:the TP detected under initial opening has reached 90 degree, thenOpen big second section fluid element, reach to set the second section fluid element aperture that delivery temperature Tp=81 DEG C is corresponding, alsoThat is make the delivery temperature detected reach to set delivery temperature.c2 gets-6 6Rear stable operation.Detect T4 after the n second to be not changed in, continue stable operation.

When the second detection object is outdoor environment temperature T4 and delivery temperature, when heating start outside sensing chamber Ambient temperature T4, determines running frequency F of compressor according to T4, determines setting aerofluxus temperature according to T4 and F Degree TP, wherein TP=a2*F+b2+c2*T4; The span of a2, b2, c2 can be with outdoor environment temperature T4 is corresponding, such as when 5 DEG C of < T4≤15 DEG C:a2 takes-8--8; B2 takes-80--80; C2 takes-8 8; As 15 DEG C of < T4:a2 takes-9--9; B2 takes-90--90; Second section fluid element reaches target aperture .Of course, it should be understood that The value of a2, b2, c2 is not limited to this, such as can also be unrelated with outdoor environment temperature T4, but system Interior set in advance.It should be noted that when a2, b2 one of them or time simultaneously value is 0, can recognize For unrelated with this parameter in formula above, such as a2=0, i.e. think unrelated with frequency F.

Then according to the operation aperture of TP regulation second section fluid element.The regulation of second section fluid element 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 Second section fluid element aperture is regulated according to associated change.

Such as during start heating operation, detect that T4 temperature is 7 DEG C, inquire about corresponding compressor fortune under this T4 Line frequency should be 75HZ, and the delivery temperature coefficient a2 in corresponding temperature interval is 0.4, b2 is 10, c2 is 5, Calculate delivery temperature Tp=0.4*75+10+5*7=75, according to setting delivery temperature Tp=75 DEG C, regulation the Two restricting element apertures: the Tp detected under initial opening has reached 70 DEG C, then turn down expansion valve, reach To setting the second section fluid element aperture that delivery temperature Tp=75 DEG C is corresponding, say, that make the row detected Temperature reaches to set delivery temperature.Second section fluid element reaches stable operation after target aperture.Examine after the n second Survey T4 to be not changed in, continue stable operation.

Need illustrate, heating and air conditioner outdoor environment temperature T4 less than less than 5 DEG C time, Being easy to frosting, delivery temperature can constantly change, and can not enter according to delivery temperature the most in that case Row regulation.

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 and/or the second detection object are outdoor environment temperature T4 and row Atmospheric pressure, first obtains running frequency F according to the outdoor environment temperature T4 detected, and according to detecting Outdoor environment temperature T4 and running frequency F be calculated setting pressure at expulsion, then adjust the second throttling The aperture of element is so that the pressure at expulsion detected 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 second section fluid element.The regulation of second section fluid element 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 Second section fluid 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 second section fluid element aperture: detect that pressure at expulsion Pp reaches under initial opening 2.5MPa, then turn down second section fluid element, reaches to set the second throttling 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.Second section fluid element Reach stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable operation.

When the second detection object is outdoor environment temperature T4 and pressure at expulsion, when heating start outside sensing chamber Ambient temperature T4, determines running frequency F of compressor according to T4, determines setting exhaust pressure according to T4 and F Power Pp；Wherein Pp=a4*F+b4+c4*T4；The span of a4, b4, c4 can be with outdoor environment temperature T4 is corresponding, such as-15 DEG C >=T4: a4 takes-10--10；B4 takes-8--8；C4 takes-5 5；When During-15 DEG C of ＜ T4≤-5 DEG C: a4 takes-12 12；B4 takes-10--10；C4 takes-6 6；As-5 DEG C of ＜ T4 When≤5 DEG C: a4 takes-15--15；B4 takes-12--12；C4 takes-7 7；When 5 DEG C of ＜ T4≤15 DEG C: A4 takes-18--18；B4 takes-15--15；C4 takes-8 8；As 15 DEG C of ＜ T4: a4 takes-20--20； B4 takes-18--18；C4 takes-9 9.Of course, it should be understood that the value of a4, b4, c4 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 a4, b4 one of them or time simultaneously value is 0, it is believed that unrelated with this parameter in formula above, Such as a4=0, i.e. think unrelated with frequency F.

Embodiment 3:

In this embodiment, the first detection object and/or the second detection object are outdoor environment temperature T4, first First obtain running frequency F according to the outdoor environment temperature T4 detected, and according to the outdoor environment detected Temperature T4 and running frequency F are calculated the setting aperture of second section fluid element, then adjust the second throttling The aperture of element is to setting aperture.

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

When the second detection object is outdoor environment temperature T4, detection outdoor environment temperature T4 when heating beginning； Determine compressor operating frequency F according to T4, determine setting aperture Lr of second section fluid element according to T4 and F； Wherein set aperture Lr=a6*F+b6+c6*T4；Wherein the span of a6, b6, c6 can be with outdoor ring Border temperature T4 is corresponding, such as-15 DEG C >=T4: a6 takes-20--20；B6 takes-200--200；c6 Take-10 10；When-15 DEG C of ＜ T4≤-5 DEG C: a6 takes-18--18；B6 takes-180--180；C6 takes-9 9； When-5 DEG C of ＜ T4≤5 DEG C: a6 takes-15--15；B6 takes-150--150；C6 takes-8 8.It is of course possible to reason Solving, the value of a6, b6, c6 is not limited to this, such as can also be unrelated with outdoor environment temperature T4, But it is set in advance in system.It should be noted that when a6, b6 one of them or simultaneously value be 0 Time, it is believed that unrelated with this parameter in formula above, such as a6=0, i.e. think with frequency F without Close.

Such as start shooting heating operation, detect that T4 temperature is-7 DEG C, inquire about corresponding compressor operating under this T4 Frequency should be 90HZ, and the expansion valve opening coefficient a6 in corresponding temperature interval is 1.2, b6 is 80, c6 is 3, Calculate expansion valve opening Lr=1.2*90+80+3* (-7)=167, according to setting aperture Lr=167 step, adjust Joint second section fluid element aperture: second section fluid element initial opening Lr is 200 steps, then turn down the second throttling Element, reaches to set aperture Lr=167 step.Second section fluid element reaches to set stable operation after aperture.n Detect T4 after Miao to be not changed in, continue stable operation.

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 and/or the second detection object are outdoor environment temperature T4 and gas-liquid The temperature of separator, first according to actually detected to outdoor environment temperature T4 obtain the outdoor temperature at place The design temperature of interval corresponding gas-liquid separator, then adjusts the aperture of second section fluid element until reality is examined The temperature of the gas-liquid separator measured meets 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 second section fluid 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 turn down second section fluid element, reach the second section fluid element aperture that design temperature Ts=26 DEG C is corresponding, That is temperature Ts making the gas-liquid separator detected reaches design temperature.Second section fluid element reaches Stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable operation.

When the temperature that the second detection object is outdoor environment temperature T4 and gas-liquid separator, heat start fortune Outdoor environment temperature T4 and temperature Ts of gas-liquid separator is detected, according to the outdoor environment temperature detected during row Degree T4 inquires about the design temperature of gas-liquid separator corresponding to corresponding outdoor temperature interval, such as outdoor temperature The corresponding relation of the interval design temperature with gas-liquid separator can be such that as-15 DEG C >=T4: Ts takes -50—30；When-15 DEG C of ＜ T4≤-5 DEG C: Ts takes-45 40；When-5 DEG C of ＜ T4≤5 DEG C: Ts takes -40—50；When 5 DEG C of ＜ T4≤15 DEG C: Ts takes-35 60；As 15 DEG C of ＜ T4: Ts takes-30 65. Of course, it should be understood that above-mentioned numerical value is exemplary illustration, and be not to of the present utility model specifically Limit.

Such as start shooting heating operation, detect that T4 temperature is 6 DEG C, inquire about corresponding gas-liquid under this T4 interval and divide Should be 20 DEG C from device temperature Ts, the Ts detected under initial opening has reached 25 DEG C, then turn down the second throttling Element, reaches the second section fluid element aperture that design temperature Ts=20 DEG C is corresponding, say, that so that detection To temperature Ts of gas-liquid separator reach design temperature.Second section fluid element is stable after reaching target aperture Run.Detect T4 after the n second to be not changed in, continue stable operation.

Embodiment 5:

In this embodiment, first detection object and/or second detection object be outdoor environment temperature T4 and in Between pressure；First running frequency F is obtained according to the outdoor environment temperature T4 detected, and according to detecting Outdoor environment temperature T4 and running frequency F be calculated setting intermediate pressure, then adjust the second throttling The aperture of element is so that the intermediate pressure detected 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.It is understood that during refrigeration The value of a7, b7, c7 can be the same or different with the value of a7, b7, c7 when heating.

Such as when heating, detect that T4 temperature is 7 DEG C, inquire about corresponding compressor operating frequency under this T4 and answer For 75HZ, the pressure coefficient a7 in corresponding temperature interval is 0.01, b7 is 0.6, c7 is 0.1, calculates Set intermediate pressure Ps=0.01*75+0.6+0.1*7=2.05, according to setting intermediate pressure Ps=2.05MPa, Regulation second section fluid element aperture: detect intermediate pressure Ps under initial opening and reached 1.8MPa, then open Big second section fluid element, reaches to set second section fluid element aperture corresponding to intermediate pressure Ps=2.05MPa, It is to say, adjust the aperture of second section fluid element so that the intermediate pressure detected reaches to set intermediate pressure Power, second section fluid element reaches stable operation after target aperture.Detect T4 after the n second to be not changed in, continue Stable operation.

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 and/or the second detection object are outdoor environment temperature T4 and gas-liquid The pressure of separator, first according to actually detected to outdoor environment temperature T4 obtain the outdoor temperature at place The setting pressure of interval corresponding gas-liquid separator, then adjusts the aperture of second section fluid element until reality is examined The pressure of the gas-liquid separator measured meets setting 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 second section fluid 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 opened big second section fluid element, reached to set pressure Ps=2.2MPa corresponding second Restricting element aperture, say, that the pressure Ps of the gas-liquid separator detected is met and sets pressure. Second section fluid element reaches stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable Run.

When the pressure that the second detection object is outdoor environment temperature T4 and gas-liquid separator, heat start fortune Outdoor environment temperature T4 and the pressure Ps of gas-liquid separator is detected, according to the outdoor environment temperature detected during row Degree T4 inquires about the setting pressure of gas-liquid separator corresponding to corresponding outdoor temperature interval, such as outdoor temperature The interval corresponding relation setting pressure with gas-liquid separator can be such that as-15 DEG C >=T4: Ps takes 0.1—10；When-15 DEG C of ＜ T4≤-5 DEG C: Ps takes 0.1 12；When-5 DEG C of ＜ T4≤5 DEG C: Ps takes 0.1—15；When 5 DEG C of ＜ T4≤15 DEG C: Ps takes 0.1 20；As 15 DEG C of ＜ T4: Ps takes 0.1 25. Of course, it should be understood that above-mentioned numerical value is exemplary illustration, and be not to of the present utility model specifically Limit.

Such as start shooting heating operation, detect that T4 temperature is-8 DEG C, inquire about corresponding gas-liquid under this T4 interval and divide Should be 1.2MPa from the setting pressure Ps of device, under initial opening, detect that the pressure Ps of gas-liquid separator reaches To 1.3MPa, then turn down second section fluid element, reach to set the second corresponding for pressure Ps=1.2MPa throttling Element aperture, say, that the pressure Ps of the gas-liquid separator detected is met and sets pressure.Second Restricting element reaches stable operation after target aperture.Detect T4 after the n second to be not changed in, continue stable operation.

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, such as can be by second section during refrigeration in above-mentioned six kinds of examples The regulative mode of the aperture of fluid element is carried out with the regulative mode of the aperture of second section fluid element when heating at random Combination.Simultaneously it is understood that by calculated setting pressure at expulsion, setting in above-described embodiment The setup parameters such as delivery temperature, setting aperture, setting intermediate pressure can also be adopted and draw in other ways, example As interval in different outdoor temperatures can be arranged, the corresponding no setup parameter in multiple outdoor temperature intervals, root The outdoor temperature interval at the outdoor environment temperature place that border detects factually i.e. can get corresponding setup parameter. Will also be appreciated that and consult the meter that the parameter obtained can also be passed through to preset above by outdoor environment temperature Calculation formula 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 heating and 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%；

Commutation assembly, described commutation assembly includes the first valve port to the 4th valve port, described first valve port and second One of them connection in valve port and the 3rd valve port, described 4th valve port and described second valve port and the described 3rd Another connection in valve port, described first valve port is connected with described air vent, and described 4th valve port is with described First reservoir is connected；

Outdoor heat exchanger and indoor heat exchanger, the first end of described outdoor heat exchanger and described second valve port phase Even, the first end of described indoor heat exchanger is connected with described 3rd valve port；

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 The first throttle element of fixing aperture, described second interface and described indoor heat exchanger it is in series with between heat exchanger Between be in series with aperture adjustable second section fluid element.

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

Heating and 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.

Heating and 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 heating and 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.