CN205351844U - Changes in temperature type air conditioning system and single cold mould air conditioning system - Google Patents

Changes in temperature type air conditioning system and single cold mould air conditioning system Download PDF

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Publication number
CN205351844U
CN205351844U CN201620017031.2U CN201620017031U CN205351844U CN 205351844 U CN205351844 U CN 205351844U CN 201620017031 U CN201620017031 U CN 201620017031U CN 205351844 U CN205351844 U CN 205351844U
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heat exchanger
interface
gas
throttle
port
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CN201620017031.2U
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刘燕飞
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Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Midea Group Co Ltd
Guangdong Midea Refrigeration Equipment Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The utility model discloses a changes in temperature type air conditioning system and single cold mould air conditioning system. The changes in temperature type air conditioning system include: enhanced vapor injection compressor, indoor outdoor heat exchanger, flash vessel, gas -liquid separation, control valve and automatically controlled heat exchanger. The flash vessel includes three interface, first interface and indoor heat exchanger intercommunication, second interface and outdoor heat exchanger intercommunication. Gas -liquid separation links to each other with the third interface including import, liquid outlet and gas outlet, import. The liquid outlet is connected to the refrigerant piping between the indoor outdoor heat exchanger through the drain pipe on, the control valve is established ties on the drain pipe. Automatically controlled heat exchanger is established ties between a throttling arrangement and second interface. According to the utility model discloses a changes in temperature type air conditioning system has guaranteed the safe in utilization of electric control element, has improved the gaseous state content of jet -propelled refrigerant, avoids producing the liquid hammer to the compressor.

Description

Cold and warm type air-conditioning system and single cold type air conditioning system
Technical field
This utility model relates to air conditioning system field, especially relates to a kind of cold and warm type air-conditioning system and single cold type air conditioning system.
Background technology
Major part adopts the air conditioning system of air injection enthalpy-increasing compressor, is all, by flash vessel, condensed cold-producing medium is carried out gas-liquid separation, and isolated gaseous refrigerant returns to compressor by puff prot, thus promoting household air-conditioner.Characteristic according to air injection enthalpy-increasing compressor, if there being liquid refrigerant to be returned directly to compressor, not only can reduce household air-conditioner, also compressor can be caused damage, visible how to avoid or reduce liquid refrigerants being returned directly to compressor, be an up the key issue of household air-conditioner and reliability.
In the electric-control system of convertible frequency air-conditioner, the heating of off-premises station automatically controlled part especially frequency-variable module is big, greatly constrains the frequency of compressor operating in high temperature environments.Specifically, automatically controlled heat radiation is generally used metal heat sink and is dispelled the heat by cross-ventilation.But when outdoor temperature is higher, owing to caloric value is big, heat dissipation metal also can run into heat radiation bottleneck.In this case for avoiding burning out automatically controlled device, the reduction compressor operation frequency of usual way is to reduce automatically controlled heating, thus affecting convertible frequency air-conditioner refrigeration at high temperature.
In associated materials, some are also had to utilize the scheme that electric control element is dispelled the heat by coolant.But adopt liquid refrigerants heat radiation, can lose refrigerating capacity and the efficiency of air-conditioner, and due in cold-producing medium evaporation process temperature too low cause automatically controlled on have condensed water to generate, exist and automatically controlled use safe hidden danger.Also having employing by flash vessel isolated gaseous coolant, electric control element to be dispelled the heat, but easily produce liquid hammer, scheme haves much room for improvement.
Utility model content
One of technical problem that utility model is intended to solve in correlation technique at least to a certain extent.For this, the utility model proposes a kind of cold and warm type air-conditioning system, it is possible to effective solve the integrity problem of electric control element during high-temperature refrigeration, avoid producing liquid hit phenomenon simultaneously.
Another purpose of the present utility model is in that to provide a kind of single cold type air conditioning system, it is also possible to effectively solve the integrity problem of electric control element during high-temperature refrigeration, avoids producing liquid hit phenomenon simultaneously.
According to cold and warm type air-conditioning system of the present utility model, including: air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor has air vent, gas returning port and puff prot;Commutation assembly, described commutation assembly has the first port to the 4th port, described first port connects with described 3rd port with one of them in described second port, and described first port connects with described 4th port with another in described second port, described first port is connected with described air vent, and described second port is connected with described gas returning port;Indoor heat exchanger and outdoor heat exchanger, the first end of described indoor heat exchanger is connected with described 3rd port, and the first end of described outdoor heat exchanger is connected with described 4th port;Flash vessel, described flash vessel includes first interface to the 3rd interface, described first interface connects with the second end of described indoor heat exchanger, described second interface connects with the second end of described outdoor heat exchanger, described flash vessel is configured to carry out the gas-liquid mixture of one of them inflow from described first interface and described second interface gas-liquid separation, and another from described first interface and described second interface of remaining part is discharged after the gas part separated is discharged from described 3rd interface, separated;First throttle device and the second throttling arrangement, described first throttle device is connected in series between described outdoor heat exchanger and described second interface, and described second throttling arrangement is connected in series between described indoor heat exchanger and described first interface;Gas-liquid separation device, described gas-liquid separation device includes import, liquid outlet and gas outlet, described import is connected with described 3rd interface, described liquid outlet is connected between described second throttling arrangement and described flash vessel by drain pipe, or described liquid outlet is connected between described first throttle device and described flash vessel by drain pipe;Controlling valve, described control valve is connected in series on described drain pipe;For the automatically controlled heat exchanger that the electric control element of cold and warm type air-conditioning system is dispelled the heat, described automatically controlled heat exchanger is connected in series between described first throttle device and described second interface.
According to cold and warm type air-conditioning system of the present utility model, by automatically controlled heat exchanger of connecting between flash vessel with first throttle device, through the coolant of first throttle device, there is suitable temperature during refrigeration, effectively electric control element can be carried out radiating and cooling and do not produce condensed water, it is effectively ensured normal operation during electric control element high temperature, it is ensured that the service life of electric control element and use safety.By being arranged in series gas-liquid separation device between flash vessel and compressor puff prot, secondary gas-liquid separation can improve the gaseous state content of jet coolant, it is to avoid compressor is produced liquid hammer.The setting simultaneously controlling valve can avoid coolant to there is the risk recharging compressor, improves operational reliability and the overall performance of cold and warm type air-conditioning system.
Alternatively, described first throttle device is capillary tube or electric expansion valve, and described second throttling arrangement is capillary tube or electric expansion valve.
Alternatively, described control valve is check valve or electromagnetic valve.
In certain embodiments, described first throttle device is the first one-way throttle valve of the direction one-way throttle from described flash vessel to described outdoor heat exchanger.
In certain embodiments, described second throttling arrangement is the second one-way throttle valve of the direction one-way throttle from described flash vessel to described indoor heat exchanger.
In certain embodiments, described first throttle device and described second throttling arrangement all include the first capillary tube, is connected in parallel the first coolant path and the second coolant path, described first coolant path is in series with the second capillary tube, being in series with check valve on described second coolant path, described first capillary tube is connected with described first coolant path being connected in parallel and the second coolant path.
Preferably, described commutation assembly is cross valve.
Alternatively, described gas-liquid separation device is fluid reservoir or gas-liquid separator.
Preferably, described liquid outlet is connected between described second throttling arrangement and described flash vessel.
According to single cold type air conditioning system of the present utility model, including: air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor has air vent, gas returning port and puff prot;Indoor heat exchanger and outdoor heat exchanger, the first end of described indoor heat exchanger is connected with described gas returning port, and the first end of described outdoor heat exchanger is connected with described air vent;Flash vessel, described flash vessel includes first interface to the 3rd interface, and described first interface connects with the second end of described indoor heat exchanger, and described second interface connects with the second end of described outdoor heat exchanger;First throttle device and the second throttling arrangement, described first throttle device is connected in series between described outdoor heat exchanger and described second interface, and described second throttling arrangement is connected in series between described indoor heat exchanger and described first interface;Gas-liquid separation device, described gas-liquid separation device includes import, liquid outlet and gas outlet, described import is connected with described 3rd interface, described liquid outlet is connected between described second throttling arrangement and described flash vessel by drain pipe, or described liquid outlet is connected between described first throttle element and described flash vessel by drain pipe;Controlling valve, described control valve is connected in series on described drain pipe;For the automatically controlled heat exchanger that the electric control element of single cold type air conditioning system is dispelled the heat, described automatically controlled heat exchanger is connected in series between described second interface and described first throttle device.
According to single cold type air conditioning system of the present utility model, by automatically controlled heat exchanger of connecting between flash vessel with first throttle device, through the coolant of first throttle device, there is suitable temperature during refrigeration, effectively electric control element can be carried out radiating and cooling and do not produce condensed water, it is effectively ensured normal operation during electric control element high temperature, it is ensured that the service life of electric control element and use safety.By being arranged in series gas-liquid separation device between flash vessel and compressor puff prot, secondary gas-liquid separation can improve the gaseous state content of jet coolant, it is to avoid compressor is produced liquid hammer.The setting simultaneously controlling valve can avoid coolant to there is the risk recharging compressor, improves operational reliability and the overall performance of cold and warm type air-conditioning system.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by practice of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cold and warm type air-conditioning system according to this utility model embodiment;
Fig. 2 is the structural representation of the cold and warm type air-conditioning system according to one embodiment of this utility model;
Fig. 3 is the structural representation of the cold and warm type air-conditioning system according to another embodiment of this utility model;
Fig. 4 is the structural representation of the throttling arrangement according to one embodiment of this utility model;
Fig. 5 is the structural representation of the cold and warm type air-conditioning system according to another embodiment of this utility model;
Fig. 6 is the structural representation of the cold and warm type air-conditioning system according to this utility model further embodiment;
Fig. 7 is the structural representation of the single cold type air conditioning system according to this utility model embodiment.
Accompanying drawing labelling:
Cold and warm type air-conditioning system A, single cold type air conditioning system B,
Air injection enthalpy-increasing compressor 1, air vent a, gas returning port b, puff prot c,
Commutation assembly the 2, first port d, the second port e, the 3rd port f, the 4th port g,
Outdoor heat exchanger 3, indoor heat exchanger 4,
Flash vessel 5, first interface h, the second interface i, the 3rd interface j,
First throttle device the 6, second throttling arrangement 7, automatically controlled heat exchanger 8, control valve 10,
Gas-liquid separation device 9, import k, liquid outlet p, gas outlet q, drain pipe 91,
First one-way throttle valve the 61, second one-way throttle valve 71,
First capillary tube m1, the second capillary tube m2, check valve m3, the first coolant path l1, the second coolant path l2;
Three capillary m4.
Detailed description of the invention
Describing the cold and warm type air-conditioning system A according to this utility model embodiment below with reference to Fig. 1-Fig. 6, wherein cold and warm type air-conditioning system A has refrigeration mode and heating mode.
As shown in Figure 1, cold and warm type air-conditioning system A according to this utility model embodiment, including: air injection enthalpy-increasing compressor 1, commutation assembly 2, indoor heat exchanger 4, outdoor heat exchanger 3, flash vessel 5, first throttle device the 6, second throttling arrangement 7, control valve 10, gas-liquid separation device 9 and automatically controlled heat exchanger 8.
Wherein, air injection enthalpy-increasing compressor 1 has air vent a, gas returning port b and puff prot c, air injection enthalpy-increasing compressor 1 is for being compressed the coolant that gas returning port b flows into, form High Temperature High Pressure cold media gas after coolant compression and discharge from air vent a, gaseous coolant can pass into compressor to be compressed from puff prot c injection, reach to increase enthalpy purpose, promote household air-conditioner.It should be noted that the structure of air injection enthalpy-increasing compressor and operation principle etc. are prior art, just it is not described in detail here.
Commutation assembly 2 has the first port d, the second port e, a 3rd port f and the four port g, and the first port d and one of them in the second port e connect with the 3rd port f, and another in the first port d and the second port e connects with the 4th port g.It is to say, commutation assembly 2 has two kinds of conducting states, a kind of conducting state is the first port d and the three port f connection, and the second port e and the four port g connection.Another kind of conducting state is the first port d and the four port g connection, and the second port e and the three port f connection.Wherein, the first port d is connected with air vent a, and the second port e is connected with gas returning port b.
Owing to cross valve application technology in air-conditioning equipment is comparatively ripe, and cross valve volume is little, less costly, and cross valve commutation is stable, reliable, therefore the commutation preferred cross valve of assembly 2.Certainly, this utility model is not limited to this, for instance, commutation assembly 2 can be also the valve member in parallel, in series by multiple control valves disclosed in prior art, is not specifically limited here.
First end of indoor heat exchanger 4 and the 3rd port f are connected, and the first end of outdoor heat exchanger 3 and the 4th port g are connected.
Flash vessel 5 includes first interface h to the 3rd interface j, flash vessel 5 is configured to the gas-liquid mixture of one of them inflow from first interface h and the second interface i is carried out gas-liquid separation, and the gas part separated is discharged from the 3rd interface j, remaining part another discharge from first interface h and the second interface i after separation.
Wherein first interface h connects with the second end of indoor heat exchanger 4, and the second throttling arrangement 7 is connected in series between indoor heat exchanger 4 and first interface h, and the second throttling arrangement 7 is for the reducing pressure by regulating flow of coolant.
Second interface i connects with the second end of outdoor heat exchanger 3, and first throttle device 6 is connected in series between outdoor heat exchanger 3 and the second interface i, and first throttle device 6 is for the reducing pressure by regulating flow of coolant.
Gas-liquid separation device 9 includes import k, liquid outlet p and gas outlet q, import k and the three interface j is connected, liquid outlet p is connected between the second throttling arrangement 7 and flash vessel 5 by drain pipe 91, or liquid outlet p is connected between first throttle device 6 and flash vessel 5 by drain pipe 91.Preferably, as it is shown in figure 1, liquid outlet p is connected between the second throttling arrangement 7 and flash vessel 5.Control valve 10 to be connected in series on drain pipe 91.
Automatically controlled heat exchanger 8 is for dispelling the heat to the electric control element of cold and warm type air-conditioning system A, and automatically controlled heat exchanger 8 is connected in series between the second interface i and first throttle device 6.It is understood that electric control element is the control part of air-conditioner, as electric control element can be connected with air injection enthalpy-increasing compressor 1 and commutation assembly 2 to control air injection enthalpy-increasing compressor 1 and the duty of commutation assembly 2.
Specifically, air injection enthalpy-increasing compressor 1, commutation assembly 2, indoor heat exchanger 4, outdoor heat exchanger 3, first throttle device 6 and the second throttling arrangement 7 limit the kind of refrigeration cycle path for the coolant that circulates and heat circulating path.Flash vessel 5, gas-liquid separation device 9 and automatically controlled heat exchanger 8 are connected on above-mentioned parts to limit the circulation path of injection coolant.
It should be noted that, the concrete structure of cross valve, indoor heat exchanger 4, outdoor heat exchanger 3, flash vessel 5, gas-liquid separation device 9 and throttling arrangement and operation principle etc. are prior art, automatically controlled heat exchanger 8 may be used without the heat exchanger structure disclosed in prior art, is just not described in detail here.
Below two kinds of mode of operations of the cold and warm type air-conditioning system A with reference to Fig. 1 are described:
Refrigeration mode: shown in the single arrow in Fig. 1.High pressure gaseous coolant is by the air vent a of air injection enthalpy-increasing compressor 1 through commutation assembly 2 inlet chamber external heat exchanger 3 heat exchange, and after heat exchange completes, major part gaseous coolant is condensed into liquid refrigerants.Gas-liquid mixed coolant realizes once throttling into the coolant of medium temperature and medium pressure state through first throttle device 6, due to the temperature of coolant of medium temperature and medium pressure state, still relatively the temperature of electric control element is low, therefore electric control element can be carried out heat exchange cooling by automatically controlled heat exchanger 8 by the coolant of medium temperature and medium pressure state effectively, and condensed water will not be produced, it is ensured that the service life of electric control element and job stability.The coolant of medium temperature and medium pressure enters in flash vessel 5 through the second interface i and is separated into two-way:
The first via: liquid refrigerants is through first interface h, crossing the second throttling arrangement 7, to carry out second throttle be low temperature, heat exchange is carried out subsequently into indoor heat exchanger 4, heat exchange is evaporated to gas and returns to the gas returning port b of air injection enthalpy-increasing compressor 1 through commutation assembly 2 after completing, be compressed into high temperature and high pressure gas afterwards and be discharged into subsequent cycle.
Second tunnel: flowed into gas-liquid separation device 9 by the gas part separated in flash vessel 5 by the 3rd interface j, flash vessel 5 coolant being flowed into gas-liquid separation device 9 carries out secondary gas-liquid separation.The high-purity gaseous coolant that secondary separation goes out from gas outlet q flow out, spray in air injection enthalpy-increasing compressor 1 by puff prot c, with the first via enter gas returning port b be compressed to a degree of gas mix be compressed again after discharge, entrance subsequent cycle.From the isolated remainder of gas-liquid separation device 9 then by liquid outlet p, flow through controlling in the circulation that valve 10 returns to the first via on drain pipe 91.For ease of describing, will go into the coolant of puff prot c in the following description and be called jet coolant.Need exist for be explanatorily, control valve 10 and can turn on the refrigerant flow between liquid outlet p to second throttling arrangement 7, close the refrigerant flow that the second throttling arrangement 7 arrives between liquid outlet p, recharge such that it is able to be effectively prevented from coolant, improve operational reliability and the overall performance of cold and warm type air-conditioning system A.
Preferably, controlling valve 10 is check valve or electromagnetic valve, for instance, check valve according to liquid refrigerants accumulate number and be in and open or close state, it is possible to multi-form by controller control, GRAVITY CONTROL etc., consequently facilitating the stability contorting of compressor and operation.
Heating mode: shown in the double-head arrow in Fig. 1.High pressure gaseous coolant is entered indoor heat exchanger 4 by the air vent a of air injection enthalpy-increasing compressor 1 through commutation assembly 2 and carries out heat exchange, and after heat exchange completes, major part gaseous coolant is condensed into liquid refrigerants.Gas-liquid mixed coolant flows into the second throttling arrangement 7 to carry out throttling into medium temperature and medium pressure state for the first time, owing to controlling the setting of valve 10, the coolant of medium temperature and medium pressure state is stopped in outside liquid outlet p, recharge such that it is able to be effectively prevented from coolant, improve operational reliability and the overall performance of cold and warm type air-conditioning system A.The coolant of medium temperature and medium pressure state can only enter in flash vessel 5 through first interface h and be separated into two-way:
The first via: liquid refrigerants flows out through the second interface i, then flow into automatically controlled heat exchanger 8, liquid refrigerants now is only through the reducing pressure by regulating flow of the second throttling arrangement 7, therefore liquid refrigerants is the liquid refrigerants of medium temperature and medium pressure state, due to the temperature of coolant of medium temperature and medium pressure state, still relatively the temperature of electric control element is low, therefore electric control element can be carried out heat exchange cooling by automatically controlled heat exchanger 8 by the coolant of medium temperature and medium pressure state effectively, and condensed water will not be produced, it is ensured that the service life of electric control element and job stability.The coolant of medium temperature and medium pressure state carries out second time throttling for low temperature through first throttle device 6 afterwards, the coolant of low temperature enters into and carries out heat exchange in outdoor heat exchanger 3, heat exchange flashes to gas after completing, this gas returns to the gas returning port b of air injection enthalpy-increasing compressor 1 through commutation assembly 2, is compressed into high temperature and high pressure gas afterwards and is discharged into subsequent cycle.
Second tunnel: flowed into gas-liquid separation device 9 by the gas part separated in flash vessel 5 by the 3rd interface j, flash vessel 5 coolant being flowed into gas-liquid separation device 9 carries out secondary gas-liquid separation.The high-purity gaseous coolant that secondary separation goes out from gas outlet q flow out, spray in air injection enthalpy-increasing compressor 1 by puff prot c, with the first via enter gas returning port b be compressed to a degree of gas mix be compressed again after discharge, entrance subsequent cycle.From the isolated remainder of gas-liquid separation device 9 then by liquid outlet p, flow through in the circulation that the control valve 10 (control valve 10 now turns on liquid outlet p and first interface h) on drain pipe 91 returns to the first via.
It should be noted that caloric value is relatively big during electric control element work, when summer operation, heat is not easily evacuated, and affects safe operation and the service behaviour of electric control element.In the automatically controlled control system of transducer air conditioning, the electric control element of its off-premises station easily generates heat, and especially the heating of the frequency-variable module in electric control element is big, constrains the operation of compressor frequency in high temperature environments greatly.
Therefore in the cold and warm type air-conditioning system A of this utility model embodiment, the coolant utilizing medium temperature and medium pressure state absorbs the heat of electric control element in automatically controlled heat exchanger 8, realize the coolant of medium temperature and medium pressure state and the heat exchange of electric control element, rational in infrastructure, radiating efficiency is high, and condensed water will not be produced on electric control element surface, it is effectively improved service life and the job stability of electric control element.
Owing to jet coolant is to obtain through flash vessel 5 and gas-liquid separation device 9 secondary separation, improve the gaseous coolant content flowing into puff prot c, thus avoiding, compressor being produced liquid hammer, it is ensured that the job stability of compressor.
Controlling valve can stop liquid refrigerants to pass through liquid outlet p inflow gas-liquid separation device 9, it is to avoid cross valve tangentially causes liquid refrigerants to recharge the risk into compressor later.Preferably, controlling valve 10 is check valve or electromagnetic valve, for instance, check valve according to liquid refrigerants accumulate number and be in and open or close state, it is possible to multi-form by controller control, GRAVITY CONTROL etc., consequently facilitating the stability contorting of compressor and operation.
Cold and warm type air-conditioning system A according to this utility model embodiment, by automatically controlled heat exchanger 8 of connecting between flash vessel 5 with first throttle device 6, flash vessel 5 coolant that coolant is medium temperature and medium pressure state that is isolated or that throttled through first throttle device 6, automatically controlled heat exchanger 8 can be flowed through so that electric control element to be dispelled the heat, can effectively ensure that normal operation during electric control element high temperature, and condensed water will not be produced at electric control element, it is ensured that the service life of electric control element and use safety.By being arranged in series gas-liquid separation device 9 between the puff prot c of flash vessel 5 and air injection enthalpy-increasing compressor 1, secondary gas-liquid separation can improve the gaseous state content of jet coolant, it is to avoid compressor is produced liquid hammer.The setting controlling valve 10 can stop liquid refrigerants to pass through liquid outlet p inflow gas-liquid separation device 9, it is to avoid cross valve tangentially causes liquid refrigerants to recharge the risk into compressor later, improves operational reliability and the overall performance of cold and warm type air-conditioning system A.
In this utility model embodiment, gas-liquid separation device 9 can be fluid reservoir, and gas-liquid separation device 9 is alternatively gas-liquid separator, is not specifically limited here.
The structure type controlling valve 10 is alternatively multiple, and controlling valve 10 can be check valve, controls valve 10 and is alternatively electromagnetic valve.
Specifically, first throttle device 6 and the second throttling arrangement 7 also can respectively capillary tube, as it is shown in figure 5, first throttle device 6 and the second throttling arrangement 7 can respectively electric expansion valves.First throttle device 6 and the second throttling arrangement 7 can structure identical, first throttle device 6 and the second throttling arrangement 7 are alternatively the combination of different restricting element, as shown in Figure 6, first throttle device 6 can be the first one-way throttle valve 61, and the second throttling arrangement 7 can be independent three capillary m4.
It addition, when the flow direction of coolant changes, the amount of restriction of first throttle device 6 and the second throttling arrangement 7 also can change accordingly, to meet first throttle device 6 and the second throttling arrangement 7 in kind of refrigeration cycle and the difference throttling demand heating in circulation.Such as, as in figure 2 it is shown, first throttle device 6 and the second throttling arrangement 7 can respectively one-way throttle valves.Again as it is shown on figure 3, first throttle device 6 and the second throttling arrangement 7 also can combiners that respectively capillary tube and check valve are constituted.
In a specific embodiment, as in figure 2 it is shown, the first one-way throttle valve 61 that first throttle device 6 is the direction one-way throttle from flash vessel 5 to outdoor heat exchanger 3.That is, when coolant heat exchanger 3 outdoor flows to the direction of flash vessel 5, the coolant flowed through is not throttled by the first one-way throttle valve 61, and when coolant flows from flash vessel 5 to the direction of outdoor heat exchanger 3, the coolant flowed through is throttled by the first one-way throttle valve 61.
Second throttling arrangement 7 is the second one-way throttle valve 71 of the direction one-way throttle from flash vessel 5 to indoor heat exchanger 4.That is, when coolant heat exchanger 4 indoor flows to the direction of flash vessel 5, the coolant flowed through is not throttled by the second one-way throttle valve 71, and when coolant flows from flash vessel 5 to the direction of indoor heat exchanger 4, the coolant flowed through is throttled by the second one-way throttle valve 71.
In sum, can be understood as, in cooling mode, the main effect that coolant is played one-way conduction of first throttle device 6, it is not required to coolant is throttled, thus the coolant of the medium temperature and medium pressure state out of heat exchanger 3 heat exchange outdoor can be made to enter in automatically controlled heat exchanger 8 without throttling, the coolant utilizing medium temperature and medium pressure state absorbs the heat of electric control element in automatically controlled heat exchanger 8, realize the coolant of medium temperature and medium pressure state and the heat exchange of electric control element, rational in infrastructure, radiating efficiency is high, and condensed water will not be produced on electric control element surface, it is effectively improved service life and the job stability of electric control element, the second main effect that coolant is played reducing pressure by regulating flow of throttling arrangement 7, thus can make the coolant entered in indoor heat exchanger 4 is low temperature, and then can more efficiently in indoor heat exchanger 4 evaporation absorb heat reach refrigeration purpose.
In a heating mode, the main effect that coolant is played reducing pressure by regulating flow of first throttle device 6, thus the coolant that coolant is low temperature of inlet chamber external heat exchanger 3 can be made, evaporate better and absorb heat from the external world, the second main effect that coolant is played one-way conduction of throttling arrangement 7, not to the coolant throttle after heat exchanger 4 heat exchange indoor, thus can make the coolant entering automatically controlled heat exchanger 8 is medium temperature and medium pressure state.
It should be noted that, one-way throttle valve described in this utility model has two kinds of effects, one of them effect is the effect playing reducing pressure by regulating flow, another effect is the effect playing one-way conduction, one-way throttle valve has the first end and the second end, when coolant flow to the second end from the first end, one-way throttle valve play the effect of one-way conduction time, then when coolant flow to the first end from the second end, one-way throttle valve plays the effect of reducing pressure by regulating flow.It is understood that the structure and working principle of one-way throttle valve is prior art, just it is not described in detail here.
In this embodiment, commutation assembly 2 is cross valve, and liquid outlet p is connected between the second throttling arrangement 7 and flash vessel 5, and its concrete circulation pattern is as follows:
Refrigeration mode: high temperature and high pressure gas by the air vent a of air injection enthalpy-increasing compressor 1 → through cross valve 2 → inlet chamber external heat exchanger 3 heat exchange → heat exchange be condensed into after completing liquid flow through the first one-way throttle valve 61 do not throttle → flow through automatically controlled heat exchanger 8 without the medium temperature and medium pressure state coolant after throttling and electric control element is carried out heat exchange cooling → subsequently enter flash vessel 5 carry out gas-liquid separation and become two-way → first via: the coolant of liquid low temperature after the second one-way throttle valve 71 throttles → throttles enters indoor heat exchanger 4 to carry out being evaporated to after heat exchange → heat exchange completes gas and is compressed into high temperature and high pressure gas through the gas returning port b of cross valve 2 → return to air injection enthalpy-increasing compressor 1 and is discharged into subsequent cycle;Second tunnel: by the gas separated in flash vessel 5 suck after gas-liquid separation device 9 secondary separation → complete the puff prot c of air injection enthalpy-increasing compressor 1 → with the first via entered by gas returning port b be compressed to a degree of gas mix be compressed again after discharge, entrance subsequent cycle;The liquid refrigerants that secondary separation goes out returns in the circulation of the first via after the control valve 10 on drain pipe 91.
Heating mode: high temperature and high pressure gas is first flowed through the second one-way throttle valve 71 flash vessel 5 that do not throttle → enter and carried out gas-liquid separation by the air vent a of air injection enthalpy-increasing compressor 1 → carry out being condensed into after heat exchange → heat exchange completes liquid through cross valve 2 → enter indoor heat exchanger 4 and become two-way → first via: flow through automatically controlled heat exchanger 8 without the coolant of the medium temperature and medium pressure state after the second one-way throttle valve 71 throttling and electric control element is carried out the coolant inlet chamber external heat exchanger 3 of the coolant liquid of heat exchange cooling → medium temperature and medium pressure state low temperature after the first one-way throttle valve 61 throttles → throttles carry out being evaporated to after heat exchange → heat exchange completes gas and be compressed into high temperature and high pressure gas through the gas returning port b of cross valve 2 → return to air injection enthalpy-increasing compressor 1 and be discharged into subsequent cycle;Second tunnel: by the gas separated in flash vessel 5 suck after gas-liquid separation device 9 secondary separation → complete the puff prot c of air injection enthalpy-increasing compressor 1 → with the first via entered by gas returning port b be compressed to a degree of gas mix be compressed again after discharge, entrance subsequent cycle;The liquid refrigerants that secondary separation goes out returns in the circulation of the first via after the control valve 10 on drain pipe 91.
In another specific embodiment, as it is shown on figure 3, first throttle device 6 and the second throttling arrangement 7 are the combiner that capillary tube is constituted with check valve.
Specifically, as shown in Figure 4, combiner includes the first capillary tube m1, be connected in parallel the first coolant path l1 and the second coolant path l2, first coolant path l1 is in series with the second capillary tube m2, being in series with check valve m3 on second coolant path l2, the first capillary tube m1 connects with the first coolant path l1 being connected in parallel and the second coolant path l2.In the example of fig. 4, when coolant flows along r1 direction, check valve m3 turns on the second coolant path l2, and coolant flows out from the second coolant path l2 after flowing through the first capillary tube m1.When coolant flows along r2 direction, check valve m3 ends the second coolant path l2, and coolant flows through the second capillary tube m2 from the first coolant path l1, flows out after flowing through the first capillary tube m1 afterwards.It is to say, in this combiner, when coolant flows along r1 direction, coolant throttles through the first capillary tube m1, when coolant flows along r2 direction, coolant throttles through the second capillary tube m2, it is achieved coolant flow direction not, the purpose that amount of restriction is different.
More specifically, in the second throttling arrangement 7, the check valve m3 of the second throttling arrangement 7 is configured to the direction one-way conduction from flash vessel 5 to indoor heat exchanger 4.So, when coolant heat exchanger 4 indoor flows to the direction of flash vessel 5, coolant flows through the first capillary tube m1 of the second throttling arrangement 7, the second capillary tube m2.When coolant flows from flash vessel 5 to the direction of indoor heat exchanger 4, coolant flows through the first capillary tube m1 of the second throttling arrangement 7.Same, in first throttle device 6, the check valve m3 of first throttle device 6 is configured to the direction one-way conduction from flash vessel 5 to outdoor heat exchanger 3.
Certainly, the structure of the combiner that capillary tube and check valve are constituted is formed multiple, and this utility model is not limited to this, for instance, check valve m3 also can be connected on the first coolant path l1.Or, the first capillary tube m1 and the second capillary tube m2 also can be replaced by choke valve, is not especially limited here.
Referring to Fig. 7, the single cold type air conditioning system B according to this utility model embodiment is described.
Single cold type air conditioning system B according to this utility model embodiment, as shown in Figure 6, including: air injection enthalpy-increasing compressor 1, indoor heat exchanger 4, outdoor heat exchanger 3, flash vessel 5, first throttle device the 6, second throttling arrangement 7, gas-liquid separation device 9, valve 10 and automatically controlled heat exchanger 8 are controlled.
Air injection enthalpy-increasing compressor 1 has air vent a, gas returning port b and puff prot c.First end of indoor heat exchanger 4 is connected with gas returning port b, and the first end of outdoor heat exchanger 3 is connected with air vent a.
Flash vessel 5 includes first interface h to the 3rd interface j, first interface h and connects with the second end of indoor heat exchanger 4, and the second interface i connects with the second end of outdoor heat exchanger 3.First throttle device 6 is connected in series between outdoor heat exchanger 3 and the second interface i, and the second throttling arrangement 7 is connected in series between indoor heat exchanger 4 and first interface h.
Gas-liquid separation device 9 includes import k, liquid outlet p and gas outlet q, import k and the three interface j is connected, liquid outlet p is connected between the second throttling arrangement 7 and flash vessel 5 by drain pipe 91, or liquid outlet p is connected between first throttle device 6 and flash vessel 5 by drain pipe 91, controls valve 10 and be connected in series on drain pipe 91.
Automatically controlled heat exchanger 8 is for dispelling the heat to the electric control element of single cold type air conditioning system B, and automatically controlled heat exchanger 8 is connected in series between the second interface i and first throttle device 6.
Specifically, air injection enthalpy-increasing compressor 1, indoor heat exchanger 4, outdoor heat exchanger 3 and first throttle device the 6, second throttling arrangement 7 limit the kind of refrigeration cycle path for the coolant that circulates.Flash vessel 5, gas-liquid separation device 9 and automatically controlled heat exchanger 8 are connected on above-mentioned parts to limit the circulation path of injection coolant.
The kind of refrigeration cycle of single cold type air conditioning system B and the circulation path of injection coolant are substantially the same when refrigerating state with cold and warm type air-conditioning system A, repeat no more here.
In single cold type air conditioning system B, gas-liquid separation device 9 can be fluid reservoir, and gas-liquid separation device 9 is alternatively gas-liquid separator.First throttle device 6 and the second throttling arrangement 7 can be electric expansion valve, capillary tube etc., and controlling valve 10 can be check valve or electromagnetic valve etc..
Equally, single waring and cooling air conditioning system B according to this utility model embodiment, by automatically controlled heat exchanger 8 of connecting between flash vessel 5 with first throttle device 6, flash vessel 5 coolant that coolant is medium temperature and medium pressure state that is isolated or that throttled through first throttle device 6, automatically controlled heat exchanger 8 can be flowed through so that electric control element to be dispelled the heat, can effectively ensure that normal operation during electric control element high temperature, and condensed water will not be produced at electric control element, it is ensured that the service life of electric control element and use safety.By being arranged in series gas-liquid separation device 9 between the puff prot c of flash vessel 5 and air injection enthalpy-increasing compressor 1, secondary gas-liquid separation can improve the gaseous state content of jet coolant, it is to avoid compressor is produced liquid hammer.The setting controlling valve 10 can stop liquid refrigerants to pass through liquid outlet p inflow gas-liquid separation device 9, it is to avoid cross valve tangentially causes liquid refrigerants to recharge the risk into compressor later, improves operational reliability and the overall performance of single cold type air conditioning system B.
In the description of this specification, specific features, structure, material or feature that the description of reference term " some embodiments ", " example " or " some examples " etc. means in conjunction with this embodiment or example describe are contained at least one embodiment of the present utility model or example.In this manual, the schematic representation of above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that embodiment of the present utility model, it will be understood by those skilled in the art that: these embodiments can being carried out multiple change, amendment, replacement and modification when without departing from principle of the present utility model and objective, scope of the present utility model is limited by claim and equivalent.

Claims (10)

1. a cold and warm type air-conditioning system, it is characterised in that including:
Air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor has air vent, gas returning port and puff prot;
Commutation assembly, described commutation assembly has the first port to the 4th port, described first port connects with described 3rd port with one of them in described second port, and described first port connects with described 4th port with another in described second port, described first port is connected with described air vent, and described second port is connected with described gas returning port;
Indoor heat exchanger and outdoor heat exchanger, the first end of described indoor heat exchanger is connected with described 3rd port, and the first end of described outdoor heat exchanger is connected with described 4th port;
Flash vessel, described flash vessel includes first interface to the 3rd interface, described first interface connects with the second end of described indoor heat exchanger, described second interface connects with the second end of described outdoor heat exchanger, described flash vessel is configured to carry out the gas-liquid mixture of one of them inflow from described first interface and described second interface gas-liquid separation, and another from described first interface and described second interface of remaining part is discharged after the gas part separated is discharged from described 3rd interface, separated;
First throttle device and the second throttling arrangement, described first throttle device is connected in series between described outdoor heat exchanger and described second interface, and described second throttling arrangement is connected in series between described indoor heat exchanger and described first interface;
Gas-liquid separation device, described gas-liquid separation device includes import, liquid outlet and gas outlet, described import is connected with described 3rd interface, described liquid outlet is connected between described second throttling arrangement and described flash vessel by drain pipe, or described liquid outlet is connected between described first throttle device and described flash vessel by drain pipe;
Controlling valve, described control valve is connected in series on described drain pipe;
For the automatically controlled heat exchanger that the electric control element of cold and warm type air-conditioning system is dispelled the heat, described automatically controlled heat exchanger is connected in series between described first throttle device and described second interface.
2. cold and warm type air-conditioning system according to claim 1, it is characterised in that described first throttle device is capillary tube or electric expansion valve, described second throttling arrangement is capillary tube or electric expansion valve.
3. cold and warm type air-conditioning system according to claim 1, it is characterised in that described control valve is check valve or electromagnetic valve.
4. cold and warm type air-conditioning system according to claim 1, it is characterised in that described first throttle device is the first one-way throttle valve of the direction one-way throttle from described flash vessel to described outdoor heat exchanger.
5. cold and warm type air-conditioning system according to claim 1, it is characterised in that described second throttling arrangement is the second one-way throttle valve of the direction one-way throttle from described flash vessel to described indoor heat exchanger.
6. cold and warm type air-conditioning system according to claim 1, it is characterized in that, described first throttle device and described second throttling arrangement all include the first capillary tube, is connected in parallel the first coolant path and the second coolant path, described first coolant path is in series with the second capillary tube, being in series with check valve on described second coolant path, described first capillary tube is connected with described first coolant path being connected in parallel and the second coolant path.
7. cold and warm type air-conditioning system according to claim 1, it is characterised in that described commutation assembly is cross valve.
8. cold and warm type air-conditioning system according to claim 1, it is characterised in that described gas-liquid separation device is fluid reservoir or gas-liquid separator.
9. cold and warm type air-conditioning system according to claim 1, it is characterised in that described liquid outlet is connected between described second throttling arrangement and described flash vessel.
10. a single cold type air conditioning system, it is characterised in that including:
Air injection enthalpy-increasing compressor, described air injection enthalpy-increasing compressor has air vent, gas returning port and puff prot;
Indoor heat exchanger and outdoor heat exchanger, the first end of described indoor heat exchanger is connected with described gas returning port, and the first end of described outdoor heat exchanger is connected with described air vent;
Flash vessel, described flash vessel includes first interface to the 3rd interface, and described first interface connects with the second end of described indoor heat exchanger, and described second interface connects with the second end of described outdoor heat exchanger;
First throttle device and the second throttling arrangement, described first throttle device is connected in series between described outdoor heat exchanger and described second interface, and described second throttling arrangement is connected in series between described indoor heat exchanger and described first interface;
Gas-liquid separation device, described gas-liquid separation device includes import, liquid outlet and gas outlet, described import is connected with described 3rd interface, described liquid outlet is connected between described second throttling arrangement and described flash vessel by drain pipe, or described liquid outlet is connected between described first throttle element and described flash vessel by drain pipe;
Controlling valve, described control valve is connected in series on described drain pipe;
For the automatically controlled heat exchanger that the electric control element of single cold type air conditioning system is dispelled the heat, described automatically controlled heat exchanger is connected in series between described second interface and described first throttle device.
CN201620017031.2U 2016-01-06 2016-01-06 Changes in temperature type air conditioning system and single cold mould air conditioning system Active CN205351844U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016834A (en) * 2016-07-12 2016-10-12 广州瑞姆节能设备有限公司 Small-size user air source low-temperature heat pump
CN106440571A (en) * 2016-11-15 2017-02-22 珠海格力电器股份有限公司 Flash device and heat pump device including same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106016834A (en) * 2016-07-12 2016-10-12 广州瑞姆节能设备有限公司 Small-size user air source low-temperature heat pump
CN106440571A (en) * 2016-11-15 2017-02-22 珠海格力电器股份有限公司 Flash device and heat pump device including same

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