CN110160290A - Conditioner - Google Patents

Abstract

The present invention provides a kind of conditioner of the boiling of tracing back of refrigerant being able to suppress in reservoir.Conditioner has: indoor heat exchanger；Outdoor heat exchanger；Compressor is installed on the refrigerant circuit for connecting indoor heat exchanger with outdoor heat exchanger, by the refrigerant compression of sucking and ejection；And reservoir (33), it is installed on the upstream portion of the compressor of refrigerant circuit, the liquid component of storing refrigerant simultaneously returns to the gas componant of refrigerant to the sucting of compressor.The refrigerant inflow part, the main refrigerant outflow portion for returning to the gas componant of refrigerant from refrigerant storage portion (71) to compressor and the agitating plate (72) floated in the refrigerant of the liquid of the inside of refrigerant storage portion (71) that reservoir (33) has the refrigerant storage portion (71) of the liquid component of storing refrigerant, refrigerant is made to flow into refrigerant storage portion (71).

Description

Conditioner

Technical field

The present invention relates to conditioners.

Background technique

The conditioner of the heat-pump-type used in vehicle etc. has heating refrigerant circuit and cooling mostly Refrigerant circuit, shared compressor, outdoor heat exchanger in two refrigerant circuits.In addition, sometimes in the upstream portion of compressor (suction side) is equipped with reservoir.Reservoir is to store simultaneously the remaining liquid component of the refrigerant recycled in refrigerant circuit The mode for mainly returning to the gas componant of refrigerant to the sucting of compressor functions.Match in the upstream portion of the compressor The reservoir set mainly is functioned in heating operation, and when the operating of conditioner stops, a large amount of refrigerant becomes Liquid and be stored in inside.(for example, referring to Japanese Unexamined Patent Publication 2017-20670 (hereinafter referred to as patent document 1)).

In the conditioner of patent document 1, it is connected with reservoir in the suction side of compressor, is stopped in operating When, most refrigerant becomes liquid and is stored in reservoir.Also, when from the status triggering compressor, reservoir Inside becomes low pressure, and the liquid component for being stored in the refrigerant of the inside of reservoir gradually gasifies and is inhaled into compressor.

However, the liquid component for the refrigerant being stored in reservoir in the starting of compressor etc., is in subsurface Part becomes superheat state (state for no matter when all carrying out phase change from liquid refrigerant to gas refrigerant) and occurs stagnant It stays.Therefore, the boiling of tracing back of refrigerant occurs when the temperature of refrigerant is more than certain degree of superheat, at this point, considering to have to produce in reservoir Liquid refrigerant in raw expansion extraordinary noise or reservoir is attracted to the situation in compressor.Also, work as liquid refrigeration When agent is attracted in compressor, the unfavorable condition for having big load to compressor effect is generated.

Summary of the invention

The scheme of the invention is in view of the foregoing and complete, its purpose is to provide one kind to be able to suppress in reservoir Refrigerant boiling of tracing back conditioner.

The present invention uses scheme below in order to solve the above problems.

(1) conditioner of a scheme of the invention has: indoor heat exchanger, makes the refrigeration passed through in inside Agent and Air Conditioning carry out heat exchange；Outdoor heat exchanger makes the refrigerant passed through in inside and extraneous gas carry out hot friendship It changes；Compressor is installed on the refrigerant circuit for connecting the indoor heat exchanger with the outdoor heat exchanger, will suck Refrigerant compression and ejection；And reservoir, it is installed on the upstream portion of the compressor of the refrigerant circuit, is stored The liquid component of refrigerant simultaneously returns to the gas componant of refrigerant to the sucting of the compressor, wherein the storage Storage includes refrigerant storage portion, the liquid component of storing refrigerant；Refrigerant inflow part makes described in refrigerant inflow Refrigerant storage portion；Refrigerant outflow portion mainly makes the gas componant of refrigerant from the refrigerant storage portion to the pressure Contracting machine returns；And agitating plate, float in the refrigerant of the liquid of the inside in the refrigerant storage portion.

By above-mentioned structure, when the compressor is operated, the gas componant of the refrigerant in reservoir passes through refrigerant stream Out portion and be inhaled into compressor, and be present in reservoir upstream side refrigerant by refrigerant inflow part to system It is flowed into cryogen reservoir.At this point, the liquid component for being stored in the refrigerant in the refrigerant storage portion of reservoir gradually gasify and It is inhaled into compressor.

In addition, when refrigerant is flowed into from refrigerant inflow part into refrigerant storage portion, the liquid component of the refrigerant It is flowed down downwards in refrigerant storage portion, makes agitating plate upper and lower displacement because of the flowing of the liquid component.In refrigerant storage portion The liquid component of refrigerant be stirred by the displacement of agitating plate.Convection current is generated in refrigerant storage portion as a result, makes to make Stage gasification of the liquid component of refrigerant in cryogen reservoir early stage the degree of superheat is not surging.

(2) on the basis of the scheme of above-mentioned (1), being also possible to the agitating plate is the through hole carried on the back with perforation table Structure.

In this case, refrigerant when being changed up and down in refrigerant storage portion when agitating plate, in refrigerant storage portion Liquid component pass through in the through hole for being set to agitating plate.Therefore, the refrigerant in refrigerant storage portion is good by efficiency Ground stirring.

(3) on the basis of the scheme of above-mentioned (1) or (2), being also possible to the indoor heat exchanger is in heating operation When so that the refrigerant and Air Conditioning that spray from the compressor is carried out the heat exchanger of heat exchange, the outdoor heat exchanger is The refrigerant after the inside of the indoor heat exchanger passes through and extraneous gas is set to carry out the heat of heat exchange in heating operation The refrigerant inflow part of exchanger, the reservoir is connect with the downstream portion of the outdoor heat exchanger.

In this case, when compressor stops, a large amount of refrigerant is stored in the refrigerant of reservoir as liquid In reservoir, therefore the displacement of the agitating plate in refrigerant storage portion is in the boiling of tracing back for refrigerant when restarting for inhibiting compressor Aspect becomes especially effectively.

According to the solution of the present invention, reservoir has the agitating plate floated in refrigerant storage portion, which receives The flowing of the refrigerant flowed into refrigerant storage portion and be displaced in refrigerant, therefore can be in refrigerant storage portion Interior generation convection current.Therefore, according to the solution of the present invention, the liquid component of the refrigerant in refrigerant storage portion can be made to overheat The stage gasification for spending not surging early stage, to inhibit the boiling of tracing back of refrigerant.

Detailed description of the invention

Fig. 1 is the composition figure of the conditioner of one embodiment of the present invention.

Fig. 2 is the longitudinal section view of the reservoir of one embodiment of the present invention.

Fig. 3 is the perspective view of the agitating plate of one embodiment of the present invention.

Fig. 4 is the composition figure of the conditioner of one embodiment of the present invention.

Fig. 5 is the composition figure of the conditioner of one embodiment of the present invention.

Specific embodiment

Hereinafter, being illustrated based on the drawings one embodiment of the present invention.

Fig. 1 is the composition figure of the conditioner 10 of present embodiment.

The conditioner 10 of present embodiment is equipped on the engine (internal combustion for not having the driving source as vehicle Machine) electric motor vehicle etc., carry out heating operation using heat pump cycle.Conditioner 10 has air-conditioning unit 11, energy Enough make the heat pump cycle 12 and control device 13 of refrigerant circulation.

Air-conditioning unit 11 has the pipeline 51 for Air Conditioning circulation, the air blower 52 being contained in the pipeline 51, evaporation Device 53 (cooling indoor heat exchanger), air mixing door 54, heating indoor heat exchanger 55 and heater core 56。

Pipeline 51 has the air taking mouth 57 of the upstream side on the circulating direction of Air Conditioning and is located at downstream The air blow-off outlet 58 of side.Also, above-mentioned air blower 52, evaporator 53, air mixing door 54, heating indoor heat exchange Device 55 and heater core 56 are configured in order from the upstream side of the circulating direction of Air Conditioning towards downstream side.

Air blower 52 for example drives according to the driving voltage that the control carried out by control device 13 applies, and will pass through Air taking mouth 57 and be taken into the Air Conditioning in pipeline 51 (at least one party in internal gas and extraneous gas) towards under Side is swum to send out.

Evaporator 53 (flows in pipeline 51 in the refrigerant for being flowed into internal low pressure and the Air Conditioning passed through around Dynamic air) between carry out heat exchange, the air-conditioning that heat absorption when being evaporated by refrigerant will pass through around evaporator 53 Air is cooling.

The indoor heat exchanger 55 of heating can carry out heat release by the refrigerant in the inside high temperature passed through and high pressure, The Air Conditioning passed through around the indoor heat exchanger 55 of heating is heated.

Heater core 56 is configured at the position of 55 downstream of indoor heat exchanger of the ratio heating in pipeline 51.Heating Device core 56 heats electric heater 62 with water by piping 61 and water pump 63 is connect.The movement that heater core 56 passes through water pump 63 Heating at it water recycles water between electric heater 62.Also, the water after electric heater 62 heats is heated to heater from water Core 56 supplies, and thus heats the Air Conditioning passed through around heater core 56.

Air mixing door 54 can be rotated by driving mechanism (not shown), which passes through control device 13 controls carried out drive.Specifically, air mixing door 54 turns in the heating location in pipeline 51 and between cooling position Dynamic, the heating location is the ventilating path (heating path) for making indoor heat exchanger 55 and heater core 56 towards heating Open position (referring to Fig. 4), the cooling position are to make the position open around the ventilating path (cooling path) of heating path It sets (referring to Fig. 5).

Heat pump cycle 12 for example has the indoor heat exchanger 55, compressor 21, system of above-mentioned evaporator 53 and heating Heat expansion valve 22, by-passing valve 23, outdoor heat exchanger 24, receiving tank 25, refrigeration valve 26, secondary condenser 27, check-valves 28, system Colod-application expansion valve 29, cooling secondary unit 31, heating valve 32, reservoir 33, dehumidification valve 34 and evaporability control valve 35, above-mentioned each component parts is connected via refrigerant flow path.

The sucting of compressor 21 is connect with reservoir 33, and blowing unit is connect with the indoor heat exchanger 55 of heating.Pressure Contracting machine 21 receives the driving force of the driving mechanism driven by the control that control device 13 carries out to drive, from the master of reservoir 33 The gas componant of refrigerant is sucked, and after by the refrigerant compression, the Xiang Shangshu as high temperature and the refrigerant of high pressure 55 side spray of indoor heat exchanger of heating go out.

Heating expansion valve 22 is so-called throttle valve, makes the refrigerant sprayed from the indoor heat exchanger 55 of heating After expansion, as low temperature, the spray form of low pressure and 2 phase of gas-liquid (being rich in liquid phase) refrigerant and sprayed to outdoor heat exchanger 24 Out.

It should be noted that being used from the blowing unit of compressor 21 via the indoor heat exchanger 55 of heating until heating The access of expansion valve 22 is high-pressure side primary path 41.

By-passing valve 23 is set in the downstream portion of the indoor heat exchanger 55 of heating around the system of high-pressure side primary path 41 On the hot cooling bypass 42 using expansion valve 22 and connecting with outdoor heat exchanger 24, and control is opened and closed by control device 13 System.It should be noted that by-passing valve 23 is closed state in the execution of heating operation, in the execution Shi Weikai shape of refrigeration operation State.

As a result, in the execution of heating operation, the refrigerant flowed out from the indoor heat exchanger 55 of heating passes through heating It is flowed into the state of low temperature and low pressure to outdoor heat exchanger 24 with expansion valve 22.On the other hand, in the execution of refrigeration operation When, the refrigerant flowed out from the indoor heat exchanger 55 of heating is by by-passing valve 23 with the state of high temperature to outdoor heat exchange Device 24 flows into.

Outdoor heat exchanger 24 carries out heat exchange between the refrigerant and outdoor atmosphere for being flowed into inside.In addition, in room The front of outer heat-exchanger 24 is equipped with the fan 24a that can be blown towards outdoor heat exchanger 24.It should be noted that fan 24a is driven by the control that control device 13 carries out.

Outdoor heat exchanger 24 can utilize the refrigerant by internal low temperature and low pressure in the execution of heating operation It absorbs heat from outdoor atmosphere, to make refrigerant vapor by the heat absorption from outdoor atmosphere.On the other hand, holding in refrigeration operation When row, outdoor heat exchanger 24 can be using the refrigerant by internal high temperature to outdoor atmosphere heat release, to for example pass through The air-supply of heat release and fan 24a to outdoor atmosphere cools down refrigerant.

It is logical that the cooling master connecting with the downstream portion of outdoor heat exchanger 24 in refrigerant flow path is arranged in refrigeration valve 26 On road 43, and control is opened and closed by control device 13.Refrigeration valve 26 is open state in the execution of refrigeration operation, is transported in heating It is closed state when the execution turned.

Receiving tank 25 is set to the upstream side of the refrigeration valve 26 in cooling primary path 43.Receiving tank 25 is stored in refrigeration fortune The remaining refrigerant being flowed into when turning by outdoor heat exchanger 24 in the refrigerant in cooling primary path 43.

Secondary condenser 27 is set to the position of 25 downstream of ratio receiving tank in cooling primary path 43, in being flowed into Heat exchange is carried out between the refrigerant in portion and outdoor atmosphere.

Check-valves 28 is set to the position of 27 downstream of ratio secondary condenser in cooling primary path 43.Check-valves 28 exists Make to circulate by the refrigerant after secondary condenser 27 towards downstream side when the execution of refrigeration operation, it is anti-in the execution of dehumidifying operating The only adverse current of ratio check-valves 28 of the refrigerant into cooling primary path 43 position of (27 side of secondary condenser) on the upstream side.

Cooling expansion valve 29 is so-called throttle valve, the check-valves 28 and evaporator being connected in cooling primary path 43 Between 53 inflow entrance.Cooling expansion valve 29 makes according to the valve opening controlled by control device 13 through the system after check-valves 28 After cryogen expansion, as low temperature, the spray form of low pressure and 2 phase of gas-liquid (being rich in gas phase) refrigerant and sprayed to evaporator 53.

Cooling secondary unit 31 is to lean on upstream than cooling expansion valve 29 across being located in cooling primary path 43 The upstream portion of the position of side and the mode of the downstream part positioned at the position than 53 downstream of evaporator configure.It is cooling auxiliary It helps heat exchanger 31 in the execution of refrigeration operation, heat exchange is carried out between above-mentioned upstream portion and downstream part, it will be upper The refrigerant for swimming part is cooling before flowing into evaporator 53.

It should be noted that the cooling primary path 43 in present embodiment is passed through from the downstream portion of outdoor heat exchanger 24 By receiving tank 25, refrigeration valve 26, secondary condenser 27, check-valves 28, cooling secondary unit 31, cooling expansion valve 29, Evaporator 53, evaporability control valve 35 and the access being connect with reservoir 33.

Heating valve 32 is arranged in around cooling primary path 43 and by the downstream portion of outdoor heat exchanger 24 and reservoir 33 The heating of connection is on bypass 44.It heats valve 32 and control is opened and closed by control device 13.Valve 32 is heated in heating operation It is open state when execution, is closed state in the execution of refrigeration operation.

Reservoir 33 is connected between merging part 46 and above-mentioned compressor 21, and the merging part 46 is by cooling primary path 43 downstream is connect with heating with the downstream of bypass 44.Reservoir 33 makes the refrigerant air-liquid point flowed into from merging part 46 From, and the remaining liquid component (liquid phase) of refrigerant is stored in inside, and mainly make the gas componant (gas of refrigerant Phase) it is drawn into compressor 21.

Fig. 2 is the figure for indicating the detailed construction of inside of reservoir 33.Internal structure about the reservoir 33 is later It is described in detail.

Dehumidification valve 34 is set on dehumidifying flow path 48, and control, the dehumidifying flow path 48 is opened and closed by control device 13 By the part for being located at the position than 28 downstream of check-valves in cooling primary path 43 and the position in high-pressure side primary path 41 It is connected in the part of the position of 55 downstream of indoor heat exchanger than heating.Dehumidification valve 34 is in the execution of dehumidifying operating It is closed state in the execution of operating (refrigeration operation and heating operation) in addition to this for open state.

Evaporability control valve 35 is set to evaporator 53 and cooling secondary unit in cooling primary path 43 Between 31, control is opened and closed by control device 13.Evaporability control valve 35 is controlled so as in the execution of dehumidifying operating, with Reduce in the execution of refrigeration operation compared to aperture.

Here, in the present embodiment, having the heating refrigerant recycled for refrigerant in inside in heating operation Circuit and the cooling refrigerant circuit in refrigeration operation for refrigerant in inside circulation, two refrigerant circuit shared compressors 21, outdoor heat exchanger 24 and reservoir 33.

Heating has indoor heat exchanger 55 and heating expansion valve 22 via heating with refrigerant circuit and will press The high-pressure side primary path 41 and lead to around cooling master that the blowing unit of contracting machine 21 is connect with the upstream portion of outdoor heat exchanger 24 Road 43 and the heating bypass 44 for connecting the downstream portion of outdoor heat exchanger 24 with reservoir 33.In addition, cooling refrigeration Agent circuit, which has, connect the downstream portion of outdoor heat exchanger 24 with reservoir 33 via cooling expansion valve 29, evaporator 53 Cooling primary path 43 and include via the high-pressure side primary path 41 of the indoor heat exchanger 55 of heating a part and Cooling bypass 42 and around heating with expansion valve 22 and by the upstream of the blowing unit of compressor 21 and outdoor heat exchanger 24 The access of portion's connection.

In addition, including being filled in the refrigerant circuit of heating refrigerant circuit and cooling refrigerant circuit The refrigerant of portion's circulation, but be mixed into the refrigerant and be lubricated for the sliding part to the equipment in the circuits such as compressor 21 Lubricating oil.It, will can be to compression in heating operation when imagining the heating operation for needing to make compressor 21 with high rotary work The lubricating oil that machine 21 carries out the amount of sufficient lubrication is mixed into refrigerant.

Then, illustrate the movement of above-mentioned conditioner 10.Fig. 4 is conditioner when indicating heating operation The explanatory diagram of 10 movement, Fig. 5 are the explanatory diagrams of the movement of the conditioner 10 when indicating refrigeration operation.It needs to illustrate It is that chain-dotted line indicates that the high pressure conditions of refrigerant, solid line indicate that the low-pressure state of refrigerant, dotted line indicate refrigerant in the figure The part that do not circulate.

(heating operation)

In heating operation, as shown in figure 4, air mixing door 54 is in the heating location of open heating path, valve is heated 32 be open state.It should be noted that in heating operation, by-passing valve 23, refrigeration valve 26, dehumidification valve 34 and evaporability control Valve 35 is closed state.

In this case, pass through the indoor heat exchange in heating from the refrigerant of the high temperature sprayed of compressor 21 and high pressure The Air Conditioning in pipeline 51 is heated in heat release in device 55.

Also, it is expanded by heating with expansion valve 22 by the refrigerant after the indoor heat exchanger of heating 55 As the spray form of 2 phase of gas-liquid rich in liquid phase, later, absorbs heat in outdoor heat exchanger 24 from outdoor atmosphere and become and be rich in The spray form of 2 phase of gas-liquid of gas phase.Pass through heating bypass 44 and merging part by the refrigerant after outdoor heat exchanger 24 46 and to reservoir 33 flow into.The refrigerant of reservoir 33 is flowed into inside it by gas-liquid separation, the mainly refrigeration of gas phase Agent (gas componant of refrigerant) is inhaled into compressor 21.

At this point, the Air Conditioning flowed in the pipeline 51 of air-conditioning unit 11 is by after evaporator 53, in heating path Interior indoor heat exchanger 55 and heater core 56 by heating.Also, Air Conditioning is handed over by the Indoor Thermal of heating After being heated when parallel operation 55 and heater core 56, by blow-off outlet 58 as heating wind direction car room in supply.

(refrigeration operation)

In refrigeration operation, as shown in figure 5, air mixing door 54 is cold in being passed through by the Air Conditioning after evaporator 53 But the cooling position in path, by-passing valve 23, refrigeration valve 26 and evaporability control valve 35 are open state.It should be noted that system Heat expansion valve 22, heating valve 32 and dehumidification valve 34 are closed state.

In this case, the indoor heat exchanger for passing through heating from the refrigerant of the high temperature sprayed of compressor 21 and high pressure 55 and by-passing valve 23 and to after outdoor atmosphere heat release in outdoor heat exchanger 24, flowed into cooling primary path 43.Then, Refrigerant is after having recycled remainder by receiving tank 25, to the heat release again of outdoor atmosphere in secondary condenser 27.Later, freeze Agent carries out expanding the spray form for becoming 2 phase of gas-liquid rich in liquid phase by cooling expansion valve 29, then, by evaporator Heat absorption in 53 is cooling by the Air Conditioning in pipeline 51.

Also, by the refrigerant of 2 phase of gas-liquid rich in gas phase after evaporator 53 in cooling secondary unit 31 It is flowed into after middle carry out heat exchange into reservoir 33.The refrigerant rich in gas phase of reservoir 33 is flowed into inside it by gas-liquid Separation, the refrigerant (gas componant of refrigerant) of mainly gas phase are inhaled into compressor 21.

At this point, after the Air Conditioning flowed in the pipeline 51 of air-conditioning unit 11 is cooled when passing through evaporator 53, around It crosses the indoor heat exchanger 55 that heating is used and is supplied as refrigeration wind from blow-off outlet 58 into car room.

Then, the reservoir 33 used in the conditioner 10 of present embodiment is illustrated referring to Fig. 2, Fig. 3 Detailed construction.

Reservoir 33 constitutes shell 65 by columned cylindrical container, is provided with and freezes in the upper wall 65A of the shell 65 With primary path 43, the inflow side connector 66 that heating bypass 44 connects and the outflow side being connect with the sucting of compressor 21 Connector 67.

In the present embodiment, inflow side connector 66 constitutes the refrigerant inflow part of reservoir 33, outflow side connector Constitute the refrigerant outflow portion of reservoir 33.

The following position directly of upper wall 65A in shell 65 is installed in a manner of having setting gap between upper wall 65A There is abutment wall 68.Introducing port 68a is formed in abutment wall 68, the system that introducing port 68a will be flowed into from inflow side connector 66 The space of the lower section of abutment wall 68 of the cryogen into shell 65 imports.

In the present embodiment, formed shell 65 in ratio abutment wall 68 on the lower the spatial portion of side part constitute to gas The refrigerant storage portion 71 for the reservoir 33 that the liquid component of refrigerant after liquid separation is stored.

Effuser 69 is installed in abutment wall 68, the upper end of the effuser 69 is connect with outflow side connector 67, under End side extends near the bottom wall in shell 65.End piece 70 is installed in the lower end of effuser 69, the end piece 70 have multiple through hole 70a of the inside and outside connection of effuser 69.In addition, in the radial outside of effuser 69, with effuser 69 are coaxially configured with guiding tube 74, and the diameter of the guiding tube 74 is bigger than the diameter of effuser 69.The lower end of guiding tube 74 is solid Bottom surface in shell 65, and upper end is open to the spatial portion of the underface of abutment wall 68.Pass through inflow side connector 66 and introducing port 68a and be flowed into the gas componant of the refrigerant of the upper space in refrigerant storage portion 71 from the upper of guiding tube 74 End passes through the through hole 70a in the gap and end piece 70 between guiding tube 74 and effuser 69, and passes through effuser 69 Inside and outflow side connector 67 and be inhaled into the sucting of compressor 21.

It should be noted that being formed with intercommunicating pore 75 in the peripheral wall portion of the lower end of guiding tube 74.In addition, in Fig. 2 Symbol 95 be the desiccant for being set in refrigerant storage portion 71 and be used to make to be mixed into the moisture drying in refrigerant, symbol L is the liquid component for the refrigerant being stored in refrigerant storage portion 71.

Agitating plate 72 is contained in the inside in refrigerant storage portion 71, which is being stored in refrigerant storage portion 71 Float in the refrigerant (the liquid component L of refrigerant) of interior liquid.Specific gravity of the agitating plate 72 by specific gravity than the refrigerant of liquid Small raw material is formed.

Fig. 3 is the perspective view of agitating plate 72.

Agitating plate 72 is formed as the outer diameter circular plate shape smaller than the internal diameter in refrigerant storage portion 71.It is formed on agitating plate 72 There is the insertion hole 76 passed through for guiding tube 74.It is bigger than the outer diameter of guiding tube 74 that insertion hole 76 is formed as diameter, so that agitating plate 72 When floating in the refrigerant of liquid in refrigerant storage portion 71, the free displacement of agitating plate 72 is not hindered.In addition, stirring It mixes and is formed on plate 72 by multiple through holes 73 of its table back perforation.When agitating plate 72 in refrigerant storage portion 71 in liquid Float when upper and lower displacement in refrigerant, through hole 73 makes refrigerant by the way that inside it, thus efficiently stirring is stored in refrigeration Refrigerant in developing agent storage portion 71.

Then, illustrate the function of reservoir 33.

State storage of the refrigerant to have liquefied when compressor 21 stops for a long time after heating operation, in refrigerant circuit It is stored in the refrigerant storage portion 71 of reservoir 33.Therefore, it is stored in the refrigerant storage portion 71 of reservoir 33 a large amount of The liquid component L of refrigerant.

When from the status triggering compressor 21, the gas componant of the refrigerant in reservoir 33 passes through outflow side connector 67 and the refrigerant that is inhaled into the sucting of compressor 21, and is present in heating bypass 44 passes through inflow side and connects Interface 66 and flowed into refrigerant storage portion 71.At this point, becoming low pressure in the refrigerant storage portion 71 of reservoir 33, it is stored in The liquid component L of refrigerant in refrigerant storage portion 71 gradually gasifies and is inhaled into the sucting of compressor 21.

In addition, when refrigerant is flowed into from the inflow side connector 66 of reservoir 33 into refrigerant storage portion 71, from stream Enter the liquid component L of the refrigerant for the introducing port 68a that side connector 66 is flowed into shell 65 into refrigerant storage portion 71 The liquid level of refrigerant drips.At this point, making the refrigerant in refrigerant storage portion 71 because of the dripping for liquid component L of refrigerant Liquid surface or dripping ingredient L fall directly on agitating plate 72 and make agitating plate 72 in the refrigerant of liquid on Lower variation.At this point, the refrigerant of the liquid in refrigerant storage portion 71 is stirred the stirring of plate 72.Especially set on agitating plate 72 Multiple through holes 73 are equipped with, therefore the refrigerant of liquid passes through the through hole 73, thus the liquid in refrigerant storage portion 71 Refrigerant is stirred well by efficiency.As a result, the refrigerant of the liquid in refrigerant storage portion 71 be stirred plate 72 stirring and Convection current is carried out in refrigerant storage portion 71.As a result, the refrigerant of the liquid in refrigerant storage portion 71 is not high in the degree of superheat Stage of the early stage risen gasifies, thus the refrigerant in refrigerant storage portion 71 trace back boil it is suppressed.

As described above, in the conditioner of present embodiment 10, the agitating plate 72 of reservoir 33 is in refrigerant Float in the refrigerant of liquid in reservoir 71, and agitating plate due to the dripping for refrigerant because being sucked from inflow side connector 66 72 change up and down in refrigerant.Also, the upper and lower variation of agitating plate 72 at this time is to the liquid in refrigerant storage portion 71 Refrigerant be stirred.Therefore, in the case where using conditioner 10 of present embodiment, reservoir can be made Stage gasification of the refrigerant of liquid in 33 refrigerant storage portion 71 early stage the degree of superheat is not surging, to inhibit to freeze The boiling of tracing back of agent.

Therefore, it in the case where using conditioner 10 of present embodiment, is able to suppress caused by tracing back and boiling Expand the generation of extraordinary noise.In addition, the liquid refrigerant being able to suppress due to tracing back boiling in reservoir 33 is attracted to compressor In 21, there is the case where big load to the effect of compressor 21.

Especially in the conditioner of present embodiment 10, in the refrigerant storage portion 71 for being contained in reservoir 33 It is provided on interior agitating plate 72 by multiple through holes 73 of table back perforation.Therefore, when agitating plate 72 changes in refrigerant, Can efficiency stir the refrigerant of the liquid in refrigerant storage portion 71 well.

Compare in addition, the conditioner 10 of present embodiment only accommodates in the refrigerant storage portion 71 of reservoir 33 The agitating plate 72 of simple structure, thus be able to suppress reservoir 33 product cost it is surging, and inhibit to freeze simultaneously The boiling of tracing back of agent.

It should be noted that within the scope of its spirit can the present invention is not limited to above-mentioned embodiment Enough carry out various design alterations.

Claims (3)

1. a kind of conditioner, which is characterized in that have:

Indoor heat exchanger makes the refrigerant passed through in inside and Air Conditioning carry out heat exchange；

Outdoor heat exchanger makes the refrigerant passed through in inside and extraneous gas carry out heat exchange；

Compressor is installed on the refrigerant circuit for connecting the indoor heat exchanger with the outdoor heat exchanger, will inhale The refrigerant compression entered and ejection；And

Reservoir is installed on the upstream portion of the compressor of the refrigerant circuit, and the liquid component of storing refrigerant is simultaneously Return to the gas componant of refrigerant to the sucting of the compressor,

The reservoir includes

Refrigerant storage portion, the liquid component of storing refrigerant；

Refrigerant inflow part makes refrigerant flow into the refrigerant storage portion；

Refrigerant outflow portion returns to the gas componant of refrigerant from the refrigerant storage portion to the compressor； And

Agitating plate floats in the refrigerant of the liquid of the inside in the refrigerant storage portion.

2. conditioner according to claim 1, which is characterized in that

The agitating plate has the through hole of perforation table back.

3. conditioner according to claim 1 or 2, which is characterized in that

The indoor heat exchanger is that the refrigerant and Air Conditioning that spray from the compressor is made to carry out heat in heating operation The heat exchanger of exchange,

The outdoor heat exchanger be make in heating operation the refrigerant after the inside of the indoor heat exchanger passes through with Extraneous gas carries out the heat exchanger of heat exchange,

The refrigerant inflow part of the reservoir is connect with the downstream portion of the outdoor heat exchanger.