CN204612275U - Gas-liquid separation device and air-conditioning system - Google Patents
Gas-liquid separation device and air-conditioning system Download PDFInfo
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- CN204612275U CN204612275U CN201520282262.1U CN201520282262U CN204612275U CN 204612275 U CN204612275 U CN 204612275U CN 201520282262 U CN201520282262 U CN 201520282262U CN 204612275 U CN204612275 U CN 204612275U
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Abstract
The utility model provides a kind of gas-liquid separation device and air-conditioning system, and wherein, gas-liquid separation device comprises: fluid reservoir, electric heater unit and control device, fluid reservoir offers refrigerant inlet and refrigerant exit; Electric heater unit is arranged on fluid reservoir, for heating the refrigerant in fluid reservoir; Control device is connected with electric heater unit with the outdoor heat exchanger of air-conditioning system respectively, control device can the Guan Wen of heat exchanger tube of sensing chamber's external heat exchanger, and according to the start and stop of pipe temperature control electric heater unit, wherein, refrigerant exit is communicated with the gas returning port of compressor in air-conditioning system; The gas-liquid separation device that the utility model provides, when pipe potential temperature is in preset temperature interval, automatic startup electric heater unit is to the refrigerant heating in fluid reservoir, heat up to impel refrigerant and evaporate, thus reduction enters the liquid refrigerants amount in compressor from gas returning port, which avoid too much liquid refrigerants enter compressor and cause compressor to occur the situation of liquid hammer, thus extend the life-span of compressor.
Description
Technical field
The utility model relates to air-conditioning technical field, in particular to a kind of gas-liquid separation device and the air-conditioning system with this gas-liquid separation device.
Background technology
At present, when existing air-conditioning system heats in the winter time, there is the situation of outdoor heat exchanger heat exchange surface frosting more, thus cause the exchange capability of heat of outdoor heat exchanger to reduce; And in existing air-conditioning system, all change refrigerant by cross valve and flow to realize outdoor heat exchanger defrost, but, because in the defrost stage, indoor machine fan is in closed condition, this heat making outdoor heat exchanger that compressor work only can be utilized to produce carries out defrost, this reduces defrost efficiency on the one hand, on the other hand, because the refrigerant in indoor heat exchanger cannot absorb heat from environment, and cause refrigerant temperature on the low side, thus make a large amount of refrigerant Yin Wendu in indoor heat exchanger too low and be condensed into liquid state; But, in existing air-conditioning system, liquid refrigerants in indoor heat exchanger can directly enter in compressor by cooled via return air pipeline, and cause the risk occurring liquid hit phenomenon in compressor to increase, situations such as causing the air valve of compressor to be out of shape because liquid hammer situation continues long meeting, break, be even broken occurs, thus make the service life of compressor in existing air-conditioning system relatively low, thus be unfavorable for the market competition of product.
Utility model content
In order to solve the problems of the technologies described above one of at least, an object of the present utility model is to provide a kind of gas-liquid separation device for air-conditioning system, effectively can carry out gas-liquid separation to the refrigerant entering compressor, enter compressor to avoid liquid refrigerants.
Another object of the present utility model is to provide a kind of air-conditioning system with above-mentioned gas-liquid separation device.
To achieve these goals, the embodiment of the utility model first aspect provides a kind of gas-liquid separation device, for air-conditioning system, comprising: fluid reservoir, described fluid reservoir offers refrigerant inlet and refrigerant exit; Electric heater unit, described electric heater unit is arranged on described fluid reservoir, for heating the refrigerant in described fluid reservoir; And control device, described control device is connected with described electric heater unit with the outdoor heat exchanger of described air-conditioning system respectively, described control device can detect the Guan Wen of the heat exchanger tube of described outdoor heat exchanger, and the start and stop of electric heater unit according to described pipe temperature control; Wherein, described refrigerant exit is communicated with the gas returning port of compressor in described air-conditioning system.
The gas-liquid separation device that the embodiment of the utility model first aspect provides, be arranged in air-conditioning system, and the refrigerant exit of fluid reservoir is communicated with the gas returning port of compressor, by arranging electric heater unit on fluid reservoir, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger is in preset temperature interval, control device controls electric heater unit and starts to heat the refrigerant in fluid reservoir, thus impel the liquid refrigerants in fluid reservoir heat up and evaporate, and then reduction enters the liquid refrigerants amount in compressor from gas returning port, which avoid too much liquid refrigerants enter compressor and cause in compressor the situation occurring liquid hammer, thus extend the life-span of compressor, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger is outside preset temperature interval, control device controls electric heater unit and heats fluid reservoir, until after air-conditioning system enters the state of heating completely, control device controls electric heater unit and quits work, to reduce the energy consumption of product.
Specifically, in the existing air-conditioning system defrost stage, a large amount of refrigerant Yin Wendu in indoor heat exchanger are too low and be condensed into liquid state, after this liquid refrigerants enters compressor, cause occurring in compressor the phenomenon of liquid hammer and damage compressor, thus reducing the dependability of air-conditioning system; And the gas-liquid separation device that the utility model provides, be arranged in air-conditioning system, and the refrigerant exit of fluid reservoir is communicated with the gas returning port of compressor, then before liquid refrigerants enters compressor, by the heating of electric heater unit liquid towards refrigerant to impel it to heat up and to evaporate, thus avoid the situation appearance that liquid refrigerants directly enters compressor, and then reduce in compressor the risk occurring liquid hammer, extend the life-span of compressor.
In addition, the gas-liquid separation device in above-described embodiment of providing of the utility model can also have following additional technical feature:
According to an embodiment of the present utility model, described control device comprises: temperature sensor, and described temperature sensor is arranged on described heat exchanger tube, for detecting the Guan Wen of described heat exchanger tube, and sends temperature signal; And Control Component, described Control Component is connected with described temperature sensor, and described Control Component receives described temperature signal, and controls the start and stop of described electric heater unit according to described temperature signal.
According to an embodiment of the present utility model, described Control Component comprises: signal conversion element, described signal conversion element is connected with described temperature sensor, described signal conversion element receives described temperature signal, and judge the mode of operation of described air-conditioning system according to described temperature signal, to generate executive signal; And control element, described control element is connected with described electric heater unit and described signal conversion element respectively, and described control element receives described executive signal, and controls the start and stop of described electric heater unit according to described executive signal.
The Guan Wenhou of temperature sensor sensing chamber external heat exchanger heat exchanger tube, the temperature detected is sent to Control Component, the signal conversion element of Control Component receives this temperature signal, and then the mode of operation of air-conditioning system is judged according to this temperature signal, such as, the temperature signal received and preset temperature signals are compared by signal conversion element, when detected temperatures is positioned at preset temperature interval, signal conversion element can show that current air-conditioning system is in the judged result of defrost pattern, now, signal conversion element can send executive signal to control element, and after control element receives this executive signal, start electric heater unit to heat fluid reservoir, thus realize control device control electric heater unit start when air-conditioning system is in defrost pattern, when detected temperatures is positioned at outside preset temperature interval, signal conversion element can show that current air-conditioning system is in the judged result of non-defrost pattern, now, signal conversion element cannot generate executive signal, then electric heater unit is in off working state, thus realize when not needing to close electric heater unit when heating fluid reservoir, to save the use power consumption of air-conditioning system, further, when the corresponding general air-conditioning system of minimum in preset temperature interval switches to heating mode completely from defrost pattern, the pipe temperature value of the heat exchanger tube of outdoor heat exchanger, and the peak of preset temperature corresponding air-conditioning system is when switching to defrost pattern from heating mode, the pipe temperature value of the heat exchanger tube of outdoor heat exchanger.
According to an embodiment of the present utility model, described electric heater unit comprises the heat tape of strip, and described heat tape is wrapped in the outside wall surface of described fluid reservoir.
The heat tape that electric heater unit comprises strip is set, particularly, heat tape is made up of the metal materials such as aluminium foil, nichrome, ferroaluminium or the nonmetallic materials such as carborundum, molybdenum dioxide, the heat tape of strip is wrapped in the outside wall surface of fluid reservoir, the then rear heat production of heat tape energising of strip, the heat that heat tape produces passes to fluid reservoir by heat conducting mode, to impel fluid reservoir to heat up, and then impels refrigerant in fluid reservoir heat up and evaporate; In addition, the heat tape due to strip has good pliability, can bend distortion easily, makes the installation fixation procedure of heat tape comparatively convenient and swift.
According to an embodiment of the present utility model, described heat tape is wrapped in the lower end of the sidewall of described fluid reservoir.
Main Function due to heat tape is to the liquid refrigerants heating in fluid reservoir, gaseous state is converted to impel the liquid refrigerants in fluid reservoir, and liquid refrigerants is deposited on the bottom of fluid reservoir under its Action of Gravity Field, then heat tape is arranged on fluid reservoir side wall lower ends by this programme, can intensively heat the liquid refrigerants being positioned at fluid reservoir bottom, thus improve the efficiency of heating surface of liquid towards refrigerant, to realize rapidly to coolant adding in the loop of air-conditioning system, thus indirectly guarantee the defrost efficiency of air-conditioning system.
According to an embodiment of the present utility model, described electric heater unit comprises the electrical heating ring in multiple outside wall surface being set in described fluid reservoir, and multiple described electrical heating central spacer is arranged.
Electric heater unit is set and comprises multiple electrical heating ring, particularly, electrical heating ring is made up of the metal materials such as aluminium foil, nichrome, ferroaluminium or the nonmetallic materials such as carborundum, molybdenum dioxide, by in the outside wall surface of multiple electrical heating ring sheathed fluid reservoir at intervals, then heat production after the energising of electrical heating ring, the heat that electrical heating ring produces passes to fluid reservoir by heat conducting mode, to impel fluid reservoir to heat up, and then impels refrigerant in fluid reservoir heat up and evaporate; In addition, because electrical heating ring can directly be set on fluid reservoir, thus provide convenience for the assembling of electrical heating ring and replacing, improve assembling and the overhaul efficiency of product.
According to an embodiment of the present utility model, described gas-liquid separation device also comprises: collet, and described collet is set on the outer surface of described electric heater unit.
Collet is set to reduce the exchange heat between electric heater unit and outside air, thus reduce the heat loss of electric heater unit, thus the heat making electric heater unit produce is as much as possible for heating the refrigerant in fluid reservoir, namely improve the efficiency of heating surface of electric heater unit, this makes fluid reservoir rapidly to coolant adding in the loop of air-conditioning system, thus can indirectly guarantee the defrost efficiency of air-conditioning system.
The embodiment of the utility model second aspect provides a kind of air-conditioning system, comprising: compressor, and described compressor has gas returning port and exhaust outlet; Cross valve, described cross valve has D port, E port, S port and C port, and described D port is communicated with described exhaust outlet; Outdoor heat exchanger, one end of described outdoor heat exchanger is communicated with described C port; Throttling arrangement, one end of described throttling arrangement is communicated with the other end of described outdoor heat exchanger; Indoor heat exchanger, one end of described indoor heat exchanger is communicated with the other end of described throttling arrangement, and the other end of described indoor heat exchanger is communicated with described E port; With the gas-liquid separation device such as according to any one of above-mentioned first aspect embodiment, the refrigerant inlet of the fluid reservoir of described gas-liquid separation device is communicated with described S port, and the refrigerant exit of described fluid reservoir is communicated with described gas returning port; Wherein, the temperature sensor of described gas-liquid separation device is arranged on the heat exchanger tube of described outdoor heat exchanger.
The air-conditioning system that the embodiment of the utility model second aspect provides, be provided with the gas-liquid separation device described in above-mentioned any one embodiment, be communicated with by the S port of the refrigerant inlet with cross valve that arrange the fluid reservoir of gas-liquid separation device, refrigerant exit is communicated with the gas returning port of compressor, thus realizes in the refrigerant loop of this gas-liquid separation device access air-conditioning system, when air-conditioning system is in heating mode, the D port of cross valve is communicated with E port, C port is communicated with S port, then refrigerant circulation path is within air-conditioning systems: compressor-cross valve-indoor heat exchanger-throttling arrangement-outdoor heat exchanger-cross valve-gas-liquid separation device-compressor, in the process, after entering indoor heat exchanger from the high pressure gaseous refrigerant of exhaust outlet discharge, heat exchange is carried out with the air in room, the cryogenic high pressure gaseous coolant formed after heat exchange forms low-temp low-pressure gaseous coolant after throttling arrangement, then low-temp low-pressure gaseous coolant enters outdoor heat exchanger, and carry out heat exchange by the air in outdoor heat exchanger and environment, and the heat in absorbing environmental air, low-temp low-pressure gaseous coolant after heat exchange is got back in compressor, because winter environment temperature is relatively low, moisture in surrounding air is easy condensation frosting on outdoor heat exchanger, so control air-conditioning system enters defrost pattern and carries out defrost, under defrost pattern, the D port of cross valve is communicated with C port, E port is communicated with S port, then refrigerant circulation path is within air-conditioning systems: compressor-cross valve-outdoor heat exchanger-throttling arrangement-indoor heat exchanger-cross valve-gas-liquid separation device-compressor, in the process, after entering outdoor heat exchanger from the high pressure gaseous refrigerant of exhaust outlet discharge, the heat of refrigerant impels the frost being attached to outdoor heat exchanger surface to melt, the cryogenic high pressure gas-liquid mixed refrigerant formed after heat exchange is through throttling arrangement pressure release, refrigerant enters indoor heat exchanger simultaneously, usually, for guaranteeing the comfort of product, now, fan in indoor set is in closed condition, namely now in indoor heat exchanger low-temp low-pressure gas-liquid mixed refrigerant because heat exchange cannot be carried out to absorb heat, and a large amount of refrigerant is existed in liquid form, then in this programme set temperature sensor with the heat exchanger tube temperature of sensing chamber's external heat exchanger, while air-conditioning system enters defrost pattern, control device detects that the temperature value on heat exchanger tube is positioned at preset temperature interval, then control device controls electric heater unit startup, after gas-liquid mixed refrigerant then in indoor heat exchanger enters fluid reservoir, under the heat effect of electric heater unit, liquid refrigerants is impelled to evaporate, directly enter in compressor to avoid liquid coolant, which avoid too much liquid refrigerants enter compressor and cause in compressor the situation occurring liquid hammer, thus extend the life-span of compressor, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger is outside preset temperature interval, control device controls electric heater unit and heats fluid reservoir, until after air-conditioning system enters the state of heating completely, control device controls electric heater unit and quits work, to reduce the energy consumption of product.
According to an embodiment of the present utility model, described air-conditioning system also comprises: oil separating device, and the entrance of described oil separating device is communicated with described exhaust outlet, and the outlet of described oil separating device is communicated with described D port.
The oil carried in the fluid that oil separating device discharges the exhaust outlet of compressor is set and carries out recycling, thus avoid compressor and lack oil condition and occur.
According to an embodiment of the present utility model, described outdoor heat exchanger and described indoor heat exchanger are finned heat exchanger.
Because the heat exchange area of finned heat exchanger is large, heat exchange efficiency is high, therefore under the prerequisite that heat exchange amount is certain, the volume of finned heat exchanger other heat exchangers and Yan Geng little relatively, outdoor heat exchanger is set and indoor heat exchanger is finned heat exchanger, then correspondingly reduce the volume of product, reduce the cost of product.
Additional aspect of the present utility model and advantage become obvious by description part below, or are recognized by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the structural representation of air-conditioning system described in the utility model;
Fig. 2 is the structural representation of air-conditioning system heating mode described in the utility model;
Fig. 3 is the structural representation of air-conditioning system defrost pattern described in the utility model.
Wherein, the corresponding relation in Fig. 1 to Fig. 3 between Reference numeral and component names is:
1 gas-liquid separation device, 11 fluid reservoirs, 111 refrigerant inlet, 112 refrigerant exits, 12 electric heater units, 2 compressors, 21 exhaust outlets, 22 gas returning ports, 3 cross valves, 4 outdoor heat exchangers, 5 throttling arrangements, 6 indoor heat exchangers;
Arrow shown in figure represents the flow direction of refrigerant.
Detailed description of the invention
In order to more clearly understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Set forth a lot of detail in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection domain of the present utility model is not by the restriction of following public specific embodiment.
The gas-liquid separation device 1 and air-conditioning system that there is provided according to some embodiments of the utility model are described referring to Fig. 1 to Fig. 3.
As shown in Figure 1 to Figure 3, the gas-liquid separation device 1 that the embodiment of the utility model first aspect provides, comprising: fluid reservoir 11, electric heater unit 12 and control device (not shown).
Particularly, fluid reservoir 11 offers refrigerant inlet 111 and refrigerant exit 112; Electric heater unit 12 is arranged on fluid reservoir 11, for heating the refrigerant in fluid reservoir 11; Control device is connected with electric heater unit 12 with the outdoor heat exchanger 4 of air-conditioning system respectively, and control device can the Guan Wen of heat exchanger tube of sensing chamber's external heat exchanger 4, and according to the start and stop of pipe temperature control electric heater unit 12; Wherein, refrigerant exit 112 is communicated with the gas returning port 22 of compressor in air-conditioning system 2.
The gas-liquid separation device 1 that the embodiment of the utility model first aspect provides, be arranged in air-conditioning system, and the refrigerant exit 112 of fluid reservoir 11 is communicated with the gas returning port 22 of compressor 2, by arranging electric heater unit 12 on fluid reservoir 11, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger 4 is in preset temperature interval, control device controls electric heater unit 12 and starts to heat the refrigerant in fluid reservoir 11, thus impel the liquid refrigerants in fluid reservoir 11 heat up and evaporate, and then reduction enters the liquid refrigerants amount in compressor 2 from gas returning port 22, which avoid too much liquid refrigerants enter compressor 2 and cause the situation occurring liquid hammer in compressor 2, thus extend the life-span of compressor 2, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger 4 is outside preset temperature interval, control device controls electric heater unit and heats fluid reservoir, until after air-conditioning system enters the state of heating completely, control device controls electric heater unit 12 and quits work, to reduce the energy consumption of product.
In an embodiment of the present utility model, control device comprises: temperature sensor and Control Component.
Particularly, temperature sensor is arranged on heat exchanger tube, for detecting the Guan Wen of heat exchanger tube, and sends temperature signal; Control Component is connected with temperature sensor, and Control Component receives temperature signal, and controls the start and stop of electric heater unit 12 according to temperature signal.
Further, Control Component comprises: signal conversion element and control element.
Particularly, signal conversion element is connected with temperature sensor, and signal conversion element receives temperature signal, and judges the mode of operation of air-conditioning system according to temperature signal, to generate executive signal; Control element is connected with electric heater unit 12 and signal conversion element respectively, and control element receives executive signal, and controls the start and stop of electric heater unit 12 according to executive signal.
In this embodiment, the Guan Wenhou of temperature sensor sensing chamber external heat exchanger 4 heat exchanger tube, the temperature detected is sent to Control Component, the signal conversion element of Control Component receives this temperature signal, and then the mode of operation of air-conditioning system is judged according to this temperature signal, such as, the temperature signal received and preset temperature signals are compared by signal conversion element, when detected temperatures is positioned at preset temperature interval, signal conversion element can show that current air-conditioning system is in the judged result of defrost pattern, now, signal conversion element can send executive signal to control element, and after control element receives this executive signal, start electric heater unit 12 to heat fluid reservoir 11, thus realize control device control electric heater unit 12 start when air-conditioning system is in defrost pattern, when detected temperatures is positioned at outside preset temperature interval, signal conversion element can show that current air-conditioning system is in the judged result of non-defrost pattern, now, signal conversion element cannot generate executive signal, then electric heater unit 12 is in off working state, thus realize when not needing to close electric heater unit 12 when heating fluid reservoir 11, to save the use power consumption of air-conditioning system, further, when the corresponding general air-conditioning system of minimum in preset temperature interval switches to heating mode completely from defrost pattern, the pipe temperature value of the heat exchanger tube of outdoor heat exchanger 4, and the peak of preset temperature corresponding air-conditioning system is when switching to defrost pattern from heating mode, the pipe temperature value of the heat exchanger tube of outdoor heat exchanger 4.
In a specific embodiment of the present utility model, as shown in Figure 1 to Figure 3, electric heater unit 12 comprises the heat tape of strip, and heat tape is wrapped in the outside wall surface of fluid reservoir 11.
In this embodiment, the heat tape that electric heater unit 12 comprises strip is set, particularly, heat tape is made up of the metal materials such as aluminium foil, nichrome, ferroaluminium or the nonmetallic materials such as carborundum, molybdenum dioxide, the heat tape of strip is wrapped in the outside wall surface of fluid reservoir 11, the then rear heat production of heat tape energising of strip, the heat that heat tape produces passes to fluid reservoir 11 by heat conducting mode, to impel fluid reservoir 11 to heat up, and then refrigerant in fluid reservoir 11 is impelled to heat up and evaporate; In addition, the heat tape due to strip has good pliability, can bend distortion easily, makes the installation fixation procedure of heat tape comparatively convenient and swift.
In a specific embodiment of the present utility model, as shown in Figure 1 to Figure 3, heat tape is wrapped in the lower end of the sidewall of fluid reservoir 11.
In this embodiment, Main Function due to heat tape is to the liquid refrigerants heating in fluid reservoir 11, gaseous state is converted to impel the liquid refrigerants in fluid reservoir 11, and liquid refrigerants is deposited on the bottom of fluid reservoir 11 under its Action of Gravity Field, then heat tape is arranged on fluid reservoir 11 side wall lower ends by this programme, can intensively heat the liquid refrigerants being positioned at fluid reservoir 11 bottom, thus improve the efficiency of heating surface of liquid towards refrigerant, to realize rapidly to coolant adding in the loop of air-conditioning system, thus indirectly guarantee the defrost efficiency of air-conditioning system.
In an embodiment of the present utility model, electric heater unit 12 comprises the electrical heating ring (not shown) in multiple outside wall surface being set in fluid reservoir 11, and multiple electrical heating central spacer is arranged.
In this embodiment, electric heater unit 12 is set and comprises multiple electrical heating ring, particularly, electrical heating ring is made up of the metal materials such as aluminium foil, nichrome, ferroaluminium or the nonmetallic materials such as carborundum, molybdenum dioxide, by in the outside wall surface of multiple electrical heating ring sheathed fluid reservoir 11 at intervals, then heat production after the energising of electrical heating ring, the heat that electrical heating ring produces passes to fluid reservoir 11 by heat conducting mode, to impel fluid reservoir 11 to heat up, and then refrigerant in fluid reservoir 11 is impelled to heat up and evaporate; In addition, because electrical heating ring can directly be set on fluid reservoir 11, thus provide convenience for the assembling of electrical heating ring and replacing, improve assembling and the overhaul efficiency of product.
In an embodiment of the present utility model, gas-liquid separation device 1 also comprises: collet (not shown), and collet is set on the outer surface of electric heater unit 12.
In this embodiment, collet is set to reduce the exchange heat between electric heater unit 12 and outside air, thus reduce the heat loss of electric heater unit 12, thus the heat making electric heater unit 12 produce is as much as possible for heating the refrigerant in fluid reservoir 11, namely improve the efficiency of heating surface of electric heater unit 12, this makes fluid reservoir 11 rapidly to coolant adding in the loop of air-conditioning system, thus can indirectly guarantee the defrost efficiency of air-conditioning system.
The embodiment of the utility model second aspect provides a kind of air-conditioning system, as shown in Figure 1 to Figure 3, comprising: the gas-liquid separation device 1 of compressor 2, cross valve 3, outdoor heat exchanger 4, throttling arrangement 5, indoor heat exchanger 6 and above-mentioned any embodiment.
Particularly, compressor 2 has gas returning port 22 and exhaust outlet 21; Cross valve 3 has D port, E port, S port and C port, and D port is communicated with exhaust outlet 21; One end of outdoor heat exchanger 4 is communicated with C port; One end of throttling arrangement 5 is communicated with the other end of outdoor heat exchanger 4; One end of indoor heat exchanger 6 is communicated with the other end of throttling arrangement 5, and the other end of indoor heat exchanger 6 is communicated with E port; The refrigerant inlet 111 of the fluid reservoir 11 of gas-liquid separation device 1 is communicated with S port, and the refrigerant exit 112 of fluid reservoir 11 is communicated with gas returning port 22; Wherein, on the heat exchanger tube of the temperature sensor of gas-liquid separation device 1 heat exchanger 4 disposed in the outdoor.
The air-conditioning system that the embodiment of the utility model second aspect provides, be provided with the gas-liquid separation device 1 described in above-mentioned any one embodiment, be communicated with by the S port of the refrigerant inlet 111 with cross valve 3 that arrange the fluid reservoir 11 of gas-liquid separation device 1, refrigerant exit 112 is communicated with the gas returning port 22 of compressor 2, thus realizes this gas-liquid separation device 1 to access in the refrigerant loop of air-conditioning system, when air-conditioning system is in heating mode, as shown in Figure 2, the D port of cross valve 3 is communicated with E port, C port is communicated with S port, then refrigerant circulation path is within air-conditioning systems: compressor 2-cross valve 3-indoor heat exchanger 6-throttling arrangement 5-outdoor heat exchanger 4-cross valve 3-gas-liquid separation device 1-compressor 2, in the process, after entering indoor heat exchanger 6 from the high pressure gaseous refrigerant of exhaust outlet 21 discharge, heat exchange is carried out with the air in room, the cryogenic high pressure gaseous coolant formed after heat exchange forms low-temp low-pressure gaseous coolant after throttling arrangement 5, then low-temp low-pressure gaseous coolant enters outdoor heat exchanger 4, and carry out heat exchange by outdoor heat exchanger 4 and the air in environment, and the heat in absorbing environmental air, low-temp low-pressure gaseous coolant after heat exchange is got back in compressor 2, because winter environment temperature is relatively low, moisture in surrounding air is easy condensation frosting on outdoor heat exchanger 4, so control air-conditioning system enters defrost pattern and carries out defrost, under defrost pattern, as shown in Figure 3, the D port of cross valve 3 is communicated with C port, E port is communicated with S port, then refrigerant circulation path is within air-conditioning systems: compressor 2-cross valve 3-outdoor heat exchanger 4-throttling arrangement 5-indoor heat exchanger 6-cross valve 3-gas-liquid separation device 1-compressor 2, in the process, after entering outdoor heat exchanger 4 from the high pressure gaseous refrigerant of exhaust outlet 21 discharge, the heat of refrigerant impels the frost being attached to outdoor heat exchanger 4 surface to melt, the cryogenic high pressure vapour-liquid mixing refrigerant formed after heat exchange is through throttling arrangement 5 pressure release, refrigerant enters indoor heat exchanger 6 simultaneously, usually, for guaranteeing the comfort of product, now, fan in indoor set is in closed condition, namely now in indoor heat exchanger 6 low-temp low-pressure vapour-liquid mixing refrigerant because heat exchange cannot be carried out to absorb heat, and a large amount of refrigerant is existed in liquid form, then in this programme set temperature sensor with the heat exchanger tube temperature of sensing chamber's external heat exchanger 4, while air-conditioning system enters defrost pattern, control device detects that the temperature value on heat exchanger tube is positioned at preset temperature interval, then control device control electric heater unit 12 starts, after vapour-liquid mixing refrigerant then in indoor heat exchanger 6 enters fluid reservoir 11, under the heat effect of electric heater unit 12, liquid refrigerants is impelled to evaporate, directly enter in compressor 2 to avoid liquid coolant, which avoid too much liquid refrigerants enter compressor 2 and cause the situation occurring liquid hammer in compressor 2, thus extend the life-span of compressor 2, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger 4 is outside preset temperature interval, control device controls electric heater unit 12 pairs of fluid reservoirs 11 and heats, until after air-conditioning system enters the state of heating completely, control device controls electric heater unit 12 and quits work, to reduce the energy consumption of product.
In an embodiment of the present utility model, air-conditioning system also comprises: oil separating device (not shown), and the entrance of oil separating device is communicated with exhaust outlet 21, and the outlet of oil separating device is communicated with D port.
In this embodiment, the oil carried is set carries out recycling in the fluid that oil separating device discharges the exhaust outlet 21 of compressor 2, thus avoid compressor 2 and lack oil condition and occur.
In an embodiment of the present utility model, outdoor heat exchanger 4 and indoor heat exchanger 6 are finned heat exchanger.
In this embodiment, because the heat exchange area of finned heat exchanger is large, heat exchange efficiency is high, therefore under the prerequisite that heat exchange amount is certain, the volume of finned heat exchanger other heat exchangers and Yan Geng little relatively, outdoor heat exchanger 4 is set and indoor heat exchanger 6 is finned heat exchanger, then correspondingly reduce the volume of product, reduce the cost of product.
In sum, the gas-liquid separation device that the utility model provides, be arranged in air-conditioning system, and the refrigerant exit of fluid reservoir is communicated with the gas returning port of compressor, by arranging electric heater unit on fluid reservoir, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger is in preset temperature interval, control device controls electric heater unit and starts to heat the refrigerant in fluid reservoir, thus impel the liquid refrigerants in fluid reservoir heat up and evaporate, and then reduction enters the liquid refrigerants amount in compressor from gas returning port, which avoid too much liquid refrigerants enter compressor and cause in compressor the situation occurring liquid hammer, thus extend the life-span of compressor, when control device detects that the pipe potential temperature of the heat exchanger tube of outdoor heat exchanger is outside preset temperature interval, control device controls electric heater unit and heats fluid reservoir, until after air-conditioning system enters the state of heating completely, control device controls electric heater unit and quits work, to reduce the energy consumption of product.
Specifically, in the existing air-conditioning system defrost stage, a large amount of refrigerant Yin Wendu in indoor heat exchanger are too low and be condensed into liquid state, after this liquid refrigerants enters compressor, cause occurring in compressor the phenomenon of liquid hammer and damage compressor, thus reducing the dependability of air-conditioning system; And the gas-liquid separation device that the utility model provides, be arranged in air-conditioning system, and the refrigerant exit of fluid reservoir is communicated with the gas returning port of compressor, then before liquid refrigerants enters compressor, by the heating of electric heater unit liquid towards refrigerant to impel it to heat up and to evaporate, thus avoid the situation appearance that liquid refrigerants directly enters compressor, and then reduce in compressor the risk occurring liquid hammer, extend the life-span of compressor.
In the utility model, term " first ", " second " object only for describing, and instruction or hint relative importance can not be interpreted as; Term " multiple " then refers to two or more, unless otherwise clear and definite restriction.The term such as term " installation ", " being connected ", " connection ", " fixing " all should be interpreted broadly, and such as, " connection " can be fixedly connected with, and also can be removably connect, or connects integratedly; " being connected " can be directly be connected, and also indirectly can be connected by intermediary.For the ordinary skill in the art, the concrete meaning of above-mentioned term in the utility model can be understood as the case may be.
In the description of this description, specific features, structure, material or feature that the description of term " embodiment ", " some embodiments ", " specific embodiment " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present utility model or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a gas-liquid separation device, for air-conditioning system, is characterized in that, comprising:
Fluid reservoir, described fluid reservoir offers refrigerant inlet and refrigerant exit;
Electric heater unit, described electric heater unit is arranged on described fluid reservoir, for heating the refrigerant in described fluid reservoir; With
Control device, described control device is connected with described electric heater unit with the outdoor heat exchanger of described air-conditioning system respectively, and described control device can detect the Guan Wen of the heat exchanger tube of described outdoor heat exchanger, and the start and stop of electric heater unit according to described pipe temperature control;
Wherein, described refrigerant exit is communicated with the gas returning port of compressor in described air-conditioning system.
2. gas-liquid separation device according to claim 1, is characterized in that, described control device comprises:
Temperature sensor, described temperature sensor is arranged on described heat exchanger tube, for detecting the Guan Wen of described heat exchanger tube, and sends temperature signal; With
Control Component, described Control Component is connected with described temperature sensor, and described Control Component receives described temperature signal, and controls the start and stop of described electric heater unit according to described temperature signal.
3. gas-liquid separation device according to claim 2, is characterized in that, described Control Component comprises:
Signal conversion element, described signal conversion element is connected with described temperature sensor, and described signal conversion element receives described temperature signal, and judges the mode of operation of described air-conditioning system according to described temperature signal, to generate executive signal; With
Control element, described control element is connected with described electric heater unit and described signal conversion element respectively, and described control element receives described executive signal, and controls the start and stop of described electric heater unit according to described executive signal.
4. gas-liquid separation device according to claim 1, is characterized in that,
Described electric heater unit comprises the heat tape of strip, and described heat tape is wrapped in the outside wall surface of described fluid reservoir.
5. gas-liquid separation device according to claim 4, is characterized in that,
Described heat tape is wrapped in the lower end of the sidewall of described fluid reservoir.
6. gas-liquid separation device according to claim 1, is characterized in that,
Described electric heater unit comprises the electrical heating ring in multiple outside wall surface being set in described fluid reservoir, and multiple described electrical heating central spacer is arranged.
7. the gas-liquid separation device according to any one of claim 4 to 6, is characterized in that, also comprises:
Collet, described collet is set on the outer surface of described electric heater unit.
8. an air-conditioning system, is characterized in that, comprising:
Compressor, described compressor has gas returning port and exhaust outlet;
Cross valve, described cross valve has D port, E port, S port and C port, and described D port is communicated with described exhaust outlet;
Outdoor heat exchanger, one end of described outdoor heat exchanger is communicated with described C port;
Throttling arrangement, one end of described throttling arrangement is communicated with the other end of described outdoor heat exchanger;
Indoor heat exchanger, one end of described indoor heat exchanger is communicated with the other end of described throttling arrangement, and the other end of described indoor heat exchanger is communicated with described E port; With
Gas-liquid separation device according to any one of claim 1 to 7, the refrigerant inlet of the fluid reservoir of described gas-liquid separation device is communicated with described S port, and the refrigerant exit of described fluid reservoir is communicated with described gas returning port;
Wherein, the temperature sensor of described gas-liquid separation device is arranged on the heat exchanger tube of described outdoor heat exchanger.
9. air-conditioning system according to claim 8, is characterized in that, also comprises:
Oil separating device, the entrance of described oil separating device is communicated with described exhaust outlet, and the outlet of described oil separating device is communicated with described D port.
10. air-conditioning system according to claim 8, is characterized in that,
Described outdoor heat exchanger and described indoor heat exchanger are finned heat exchanger.
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| CN201520282262.1U CN204612275U (en) | 2015-04-30 | 2015-04-30 | Gas-liquid separation device and air-conditioning system |
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| CN107917548A (en) * | 2017-10-13 | 2018-04-17 | 珠海格力电器股份有限公司 | The control method and heat pump system of heat pump system |
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| CN114992811A (en) * | 2022-06-16 | 2022-09-02 | 宁波奥克斯电气股份有限公司 | Control method for air conditioner outlet air temperature, air conditioner and readable storage medium |
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| CN114992811A (en) * | 2022-06-16 | 2022-09-02 | 宁波奥克斯电气股份有限公司 | Control method for air conditioner outlet air temperature, air conditioner and readable storage medium |
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