CN104949385B - vehicular heat pump system - Google Patents
vehicular heat pump system Download PDFInfo
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- CN104949385B CN104949385B CN201410125911.7A CN201410125911A CN104949385B CN 104949385 B CN104949385 B CN 104949385B CN 201410125911 A CN201410125911 A CN 201410125911A CN 104949385 B CN104949385 B CN 104949385B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a kind of Vehicular heat pump system, the Vehicular heat pump system includes：Dehumidify line, before external heat exchanger is introduced in part of refrigerant therein is supplied to evaporator after the first expansion gear for the cold-producing medium stream that is circulated in refrigerant circulation lines, to be dehumidified in the heat pump mode to the inside of vehicle, so as to when the inside to vehicle is dehumidified, it is introduced in refrigerant compared with evaporator before the external heat exchanger with elevated pressures, allow refrigerant smoothly to flow to the evaporator of low pressure by the line that dehumidifies, and smoothly the inside of vehicle is dehumidified.
Description
Technical field
The present invention relates to a kind of Vehicular heat pump system, more particularly, it is related to such a Vehicular heat pump system, this is automobile-used
Heat pump includes：Dehumidify line, for the cold-producing medium stream that is circulated in refrigerant circulation lines after the first expansion gear in quilt
Part of refrigerant therein is supplied to evaporator before being incorporated into external heat exchanger, with the heat pump mode in vehicle
Portion is dehumidified, so as to when the inside to vehicle is dehumidified, be introduced in refrigerant compared with evaporator with higher
Before the external heat exchanger of pressure, it is allowed to which refrigerant smoothly flows to the evaporator of low pressure by the line that dehumidifies, and smoothly right
Dehumidified the inside of vehicle.
Background technology
In general, car air-conditioner includes being used to make the cooling system of the internal cooling of vehicle and for the inside to vehicle
The heating system heated.In the vaporizer side of refrigerant circulation, cooling system is by flowing through the air outside evaporator
Air is converted into cold air with carrying out heat exchange in the refrigerant of evaporator internal flow, so that the internal cooling of vehicle.
In the heater core side of cooling water circulation, heating system by flow through the air outside heater core with inside heater core
The cooling water of flowing carries out heat exchange and air is converted into warm air, to heat the inside of vehicle.
Meanwhile, the heat pumps different from car air-conditioner have been employed, and the heat pump can use a refrigerant to follow
Ring optionally performs cooling by changing the flow direction of refrigerant and heated.For example, heat pump includes two heat exchange
Device（One air being mounted in inside air-conditioning shell for the inside with being blown into vehicle carries out the internal exchanger of heat exchange；
Another is the external heat exchanger for carrying out heat exchange with the environment outside air-conditioning shell）With for making the flow direction of refrigerant
The direction regulating valve of change.Therefore, according to the flow direction for the refrigerant that valve regulation is adjusted by direction, when operating at refrigerating mode
When internal exchanger be used as cool down heat exchanger, and when operating at heating mode internal exchanger be used as be used for heat
Heat exchanger.
Polytype Vehicular heat pump system has been proposed, and Fig. 1 shows that the representativeness of Vehicular heat pump system is shown
Example.
As shown in figure 1, Vehicular heat pump system includes：Compressor 30, for compressing and discharging refrigerant；Internal exchanger
32, the heat of the refrigerant for making to discharge from compressor 30 is radiated；First expansion valve 34 and the first bypass valve 36, in parallel
Install, the refrigerant for optionally flowing through internal exchanger 32 passes through；External heat exchanger 48, it is swollen for flowing through first
The refrigerant of the swollen bypass valve 36 of valve 34 or first carries out heat exchange with outdoor environment；Evaporator 60, for flowing through external heat-exchanging
The refrigerant evaporation of device 48；Storage tank（accumulator）62, for the refrigerant for flowing through evaporator 60 to be divided into vapor phase refrigerant
And liquid phase refrigerant；Inner side heat exchanger 50, for making the refrigerant for being supplied to evaporator 60 and the refrigeration for returning to compressor 30
Agent carries out heat exchange；Second expansion valve 56, for optionally expanding the refrigerant supplied to evaporator 60；Second bypass valve
58, installed in parallel with the second expansion valve 56, for optionally making the outlet side of external heat exchanger 48 and the entrance of storage tank 62
Side is connected.
In Fig. 1, label 10 indicates air-conditioning shell, and internal exchanger 32 and evaporator 60 are embedded in air-conditioning shell 10, label
12 indicate that temperature adjustment door, the combined amount for controlling cold air and warm air, and label 20 are indicated installed in air-conditioning shell
The air blower of porch.
According to the heat pump with said structure, when operating at heat pump mode（Heating mode）When, the first bypass valve 36
Closed with the second expansion valve 56, and the first expansion valve 34 and the second bypass valve 58 are opened.In addition, temperature adjustment door 12 is according to such as
Operated shown in Fig. 1.Therefore, the refrigerant discharged from compressor 30 flows through internal exchanger 32, the first expansion valve 34, outside successively
Heat exchanger 48, the high-pressure side 52 of inner side heat exchanger 50, the second bypass valve 58, the low-pressure side of storage tank 62 and inner side heat exchanger 50
54, it is then return to compressor 30.That is, internal exchanger 32 is used as heater and external heat exchanger 48 is used as evaporation
Device.
When operating at air conditioning mode（Refrigerating mode）When, the first bypass valve 36 and the second expansion valve 56 are opened, and first
The bypass valve 58 of expansion valve 34 and second is closed.In addition, temperature adjustment door 12 closes the passage of internal exchanger 32.Therefore, from pressure
The refrigerant that contracting machine 30 is discharged flows through internal exchanger 32, the first bypass valve 36, external heat exchanger 48, inner side heat exchanger 50 successively
High-pressure side 52, the second expansion valve 56, evaporator 60, the low-pressure side 54 of storage tank 62 and inner side heat exchanger 50, be then return to
Compressor 30.That is, the internal exchanger 32 that evaporator 60 is used as evaporator and closed by temperature adjustment door 12 is used
Make heater（It is identical with heat pump mode）.
However, in the case of traditional automobile-used heat pump, in heat pump mode（Heating mode）Under, in air-conditioning shell 10
The internal exchanger 32 in portion is used as heater to perform heating, outside air-conditioning shell 10（That is, installed in the engine of vehicle
At the front side in cabin）External heat exchanger 48 be used as with outdoor air carry out heat exchange evaporator.
In this example, if the temperature for the refrigerant being incorporated into external heat exchanger 48 is higher than the temperature of outdoor air,
In other words, if the temperature of refrigerant is high, then because frosting causes external heat exchanger 48 can not in external heat exchanger 48
Heat is absorbed from outdoor air and heat exchanger effectiveness is reduced, therefore, heating properties and the efficiency reduction of heat pump.
In order to solve the above problems, reference picture 2, by easily describe submitted by the same inventor of the present invention the
A kind of Vehicular heat pump system disclosed in 10-2012-0103054 Korean patent publications.Vehicular heat pump system includes：Compressor
70, in refrigerant circulation lines 91, for compressing and discharging refrigerant；Internal exchanger 71, in air-conditioning shell 80
Portion is simultaneously connected with the refrigerant circulation lines 91 of the outlet side of compressor 70, for make the internal flow of air-conditioning shell 80 air and from
Heat exchange is carried out between the refrigerant that compressor 70 is discharged；Evaporator 75, installed in the inside of air-conditioning shell 80 and with compressor 70
The refrigerant circulation lines 91 of entrance side are connected, for making the air in the internal flow of air-conditioning shell 80 and the system supplied to compressor 70
Heat exchange is carried out between cryogen；External heat exchanger 73, installed in the outside of air-conditioning shell 80, for making to circulate through refrigerant circulation
Heat exchange is carried out between the refrigerant and outdoor air of line 91；First expansion gear 72, the entrance of heat exchanger 73 mounted externally
In the refrigerant circulation lines 91 of side, for optionally being made supplied to external heat exchanger 73 according to air conditioning mode or heat pump mode
Refrigerant expands；Second expansion gear 74, in the refrigerant circulation lines 91 of the entrance side of evaporator 75, for making supply
Refrigerant to evaporator 75 expands；First by-pass line 92, installs the refrigerant of the entrance side for making the second expansion gear 74
The refrigerant circulation lines 91 of the outlet side of circular route 91 and evaporator 75 are connected to each other, so that refrigerant bypasses the second expansion gear
74 and evaporator 75；First reversal valve 90, at the first by-pass line 92 and the bifurcation of refrigerant circulation lines 91, for changing
The flow direction of variable refrigerant, so that the refrigerant for passing through external heat exchanger 73 according to air conditioning mode or heat pump mode flow to
One by-pass line 92 or the second expansion gear 74.
In addition, in order to be dehumidified in the heat pump mode to the inside of vehicle, dehumidifying line 94 is installed for making evaporator 75
The by-pass line 92 of refrigerant circulation lines 91 and first of entrance side be connected to each other, in the refrigerant to flow through the first by-pass line 92
A part flowed towards evaporator 75, and on-off valve 94a be arranged on dehumidifying line 94 on.
In addition, the second by-pass line 93 bypasses the side of external heat exchanger 73 according to the refrigerant for flowing through the first expansion gear 72
Formula is installed.
Therefore, it is less than zero degree or in external heat exchanger 73 in the case of frosting in outdoor temperature, because refrigerant is logical
Cross the second by-pass line 93 and bypass external heat exchanger 73, therefore minimize the influence of the outdoor air of low temperature, further, since passing through
Heating plant 76 reclaims the used heat of electronic unit（waste heat）, therefore heat pump can smoothly operate and improve heating
Performance.
In addition, in the heat pump mode, being dehumidified if necessary to the inside to vehicle, then opening the on-off of dehumidifying line 94
Valve 94a, the refrigerant then expanded in the first expansion gear 72 flow to the first by-pass line 92 by external heat exchanger 73.
In the example, a part of diverging flow flowing in the refrigerant of the first by-pass line 92 to dehumidifying line 94 is simultaneously supplied to evaporator
75, dehumidifying is performed with the inside to vehicle.
However, the refrigerant expanded in the first expansion gear 72 while external heat exchanger 73 are flowed through with outdoor cold sky
Gas carries out heat exchange and reduces pressure.Due in the heat pump mode in evaporator 75 almost without refrigerant, finally, based on figure
The pressure of on-off valve 94a, the A sides of 2 dehumidifying line 94 gets lower than B sides（Evaporator）Pressure, therefore, under dehumidification mode
The refrigerant flowed in the first by-pass line 92 will not flow to evaporator 75 but reverse flow.It is thus impossible to vehicle
Dehumidified inside.
The content of the invention
It is therefore proposed that the present invention is to solve the above mentioned problem occurred in the prior art, it is an object of the invention to provide
A kind of Vehicular heat pump system, the Vehicular heat pump system includes：Dehumidify line, for the refrigerant circulated in refrigerant circulation lines
Flow through and part of refrigerant therein be supplied to evaporator before external heat exchanger is introduced in after the first expansion gear,
To be dehumidified in the heat pump mode to the inside of vehicle, so as to when the inside to vehicle is dehumidified, be drawn in refrigerant
Enter to before the external heat exchanger with elevated pressures compared with evaporator, it is allowed to which refrigerant is smoothly flowed to by the line that dehumidifies
The evaporator of low pressure, and smoothly the inside of vehicle is dehumidified.
To achieve these goals, the present invention provides a kind of Vehicular heat pump system, and the Vehicular heat pump system includes：Compression
Machine, in refrigerant circulation lines, for compressing and discharging refrigerant；Internal exchanger, inside air-conditioning shell, is used for
Make the air inside air-conditioning shell and from carrying out heat exchange between the refrigerant of compressor discharge；Evaporator, in air-conditioning shell
Portion, for making air inside air-conditioning shell and supplied to carrying out heat exchange between the refrigerant of compressor；External heat exchanger, is installed
Outside air-conditioning shell, heat exchange is carried out between the refrigerant of refrigerant circulation lines and outdoor air for making to cycle through；First
Expansion gear, is mounted in the refrigerant circulation lines between internal exchanger and external heat exchanger, for making refrigerant swollen
It is swollen；Second expansion gear, in the refrigerant circulation lines of the entrance side of evaporator, for expanding refrigerant；By-pass line,
This is connected according to the refrigerant circulation lines for the entrance side for making the second expansion gear and the refrigerant circulation lines of outlet side of evaporator
The mode of sample is installed, to make refrigerant bypass the second expansion gear and evaporator in the heat pump mode；Dehumidify line, installed in refrigeration
On agent circular route, for the part in the refrigerant circulated in refrigerant circulation lines to be supplied into evaporator, with heat pump
The inside of vehicle is dehumidified under pattern, wherein, dehumidifying line supplies the part in the refrigerant for flowing through the first expansion gear
Should be to evaporator.
According to a preferred embodiment of the invention, Vehicular heat pump system includes：Dehumidify line, for being followed in refrigerant circulation lines
The cold-producing medium stream of ring supplies part of refrigerant therein before external heat exchanger is introduced in after the first expansion gear
Should to evaporator, to be dehumidified in the heat pump mode to the inside of vehicle, so that when the inside to vehicle is dehumidified,
Refrigerant is introduced in compared with evaporator before the external heat exchanger with elevated pressures, it is allowed to which refrigerant is put down by the line that dehumidifies
The evaporator of low pressure is quietly flowed to, and smoothly the inside of vehicle is dehumidified.
In addition, the outlet of the bypass runner and first flow of expansion valve is collinearly formed, so that the hydrodynamic noise of refrigerant
Minimized with the pressure loss, wherein, dehumidifying line is connected to the bypass runner of expansion valve.
In addition, for controlling the controller of the on-off valve of dehumidifying line to be installed to be, judging that evaporator is under dehumidification mode
On-off valve is closed in no frosting when sensing frosting, so that heat pump can prevent evaporimeter frosting.
In addition, the pipe diameter of dehumidifying line is less than the pipe diameter of the refrigerant circulation lines of the outlet side of the first expansion gear, or
The pipe of person's dehumidifying line is connected according to mode as the bifurcated above the pipe of refrigerant circulation lines, so as to divide from refrigerant circulation lines
The amount that fork flow to the refrigerant of dehumidifying line is relatively few, so that it is guaranteed that heating properties.
Brief description of the drawings
Pass through the detailed description carried out below in conjunction with the accompanying drawings to the preferred embodiments of the present invention, above and other of the invention
Objects, features and advantages will be apparent, wherein：
Fig. 1 is the structure chart of traditional Vehicular heat pump system；
Fig. 2 is the structure chart of another traditional Vehicular heat pump system；
Fig. 3 is the structure chart of the air conditioning mode of Vehicular heat pump system according to a preferred embodiment of the invention；
Fig. 4 is the knot of the first heating mode of the heat pump mode of Vehicular heat pump system according to a preferred embodiment of the invention
Composition；
Fig. 5 is first heating mode of the Vehicular heat pump system according to a preferred embodiment of the invention in execution heat pump mode
While perform dehumidification mode structure chart；
Fig. 6 is the knot of the second heating mode of the heat pump mode of Vehicular heat pump system according to a preferred embodiment of the invention
Composition；
Fig. 7 is second heating mode of the Vehicular heat pump system according to a preferred embodiment of the invention in execution heat pump mode
While perform dehumidification mode structure chart；
Fig. 8 is the structure chart that the outlet for the dehumidifying line for showing Fig. 5 is connected to the by-pass line of the second expansion gear；
Fig. 9 is the perspective view of Fig. 8 expansion valve.
Embodiment
Now, the preferred embodiments of the present invention are described in detail with reference to the accompanying drawings.
First, refrigerant circulation lines are included according to the Vehicular heat pump system of the present invention（R）On the compressor that is sequentially connected
100th, internal exchanger 110, the first expansion gear 120, external heat exchanger 130, the second expansion gear 140, evaporator 160, and
And preferably, Vehicular heat pump system is applied to electric vehicle or motor vehicle driven by mixed power.
In addition, in refrigerant circulation lines（R）On, bypass the by-pass line of the second expansion gear 140 and evaporator 160（R1）、
Bypass the auxiliary bypass line of external heat exchanger 130（R2）, expansion line（R3）（First expansion gear 120 is arranged on expansion line（R3）
On）It is connected in parallel respectively.
In addition, the first reversal valve 191 is arranged on by-pass line（R1）Bifurcation at, the second reversal valve 192 be arranged on auxiliary
By-pass line（R2）Bifurcation at, and two-port valve 122 be arranged on expansion line（R3）Bifurcation at.
Therefore, under air conditioning mode, as shown in figure 3, the refrigerant discharged from compressor 100 cycles through inside and changed successively
Hot device 110, external heat exchanger 130, the second expansion gear 140, evaporator 160 and compressor 100.
In this example, internal exchanger 110 is used as condenser and evaporator 160 is used as evaporator.
Meanwhile, identical with internal exchanger 110, external heat exchanger 130 also serves as condenser.
In heat pump mode（First heating mode）Under, as shown in figure 4, the refrigerant discharged from compressor 100 is circulated successively
Pass through the aperture of internal exchanger 110, the first expansion gear 120（orifice）121st, external heat exchanger 130, by-pass line（R1）
And compressor 100.
In this example, internal exchanger 110 is used as condenser and external heat exchanger 130 is used as evaporator.Refrigerant
It is not supplied to the second expansion gear 140 and evaporator 160.
Meanwhile, when being dehumidified in the heat pump mode to the inside of vehicle, in refrigerant circulation lines（R）The system of middle circulation
A part in cryogen passes through the line that dehumidifies（R4）（It will be described later）Evaporator 160 is provided to, with to vehicle
Dehumidified inside.
As described above, heat pump according to a preferred embodiment of the invention, because air conditioning mode and heat pump mode have
Identical refrigerant circulation direction and cause refrigerant circulation lines（R）It can share, prevent the stagnation of refrigerant and simplify refrigeration
Agent circular route（R）.
Hereinafter, it will be described in detail the part of the Vehicular heat pump system according to the present invention.
First, installed in refrigerant circulation lines（R）On compressor 100 by receive come from engine（Internal-combustion engine
Machine）Or motor driving force and suction and compression refrigerant while operate, then, the gas phase refrigeration of discharge HTHP
Agent.
Compressor 100 sucks and compressed the refrigerant that is discharged from evaporator 160 and by cold-producing medium supply under air conditioning mode
To internal exchanger 110, and compressor 100 is sucked and compressed from external heat exchanger 130 and discharges and flow through in the heat pump mode
By-pass line（R1）Refrigerant and refrigerant be supplied to internal exchanger 110.
In addition, under the dehumidification mode of heat pump mode, because refrigerant is supplied with simultaneously by by-pass line（R1）With except
Wet line（R4）On evaporator 160, therefore compressor 100 sucks and is compressed in and flow through by-pass line（R1）With dehumidifying line（R4）On
The refrigerant that converges after evaporator 160 simultaneously refrigerant be supplied to internal exchanger 110.
Internal exchanger 110 be arranged on the inside of air-conditioning shell 150 and with the refrigerant circulation lines of the outlet side of compressor 100
（R）Connection, so that the air in the internal flow of air-conditioning shell 150 and the refrigerant progress heat exchange from the discharge of compressor 100.
In addition, evaporator 160 be arranged on air-conditioning shell 150 inside and with the refrigerant circulation of the entrance side of compressor 100
Line（R）Connection, so that the air in the internal flow of air-conditioning shell 150 carries out heat exchange with the refrigerant supplied to compressor 100.
Internal exchanger 110 both functions as condenser under air conditioning mode and heat pump mode.
Evaporator 160 is used as evaporator under air conditioning mode, but evaporator 160 is in the first heating mode of heat pump mode
Stop with the second heating mode as evaporator, its reason is the first heating mode and the second heating mode in heat pump mode
Under not to evaporator 160 supply refrigerant, and evaporator 160 under dehumidification mode be used as evaporator, its reason be dehumidifying
The part in refrigerant is supplied to evaporator 160 under pattern.
In addition, internal exchanger 110 and evaporator 160 are separated from each other inside air-conditioning shell 150 according to predetermined space, and
In this example, internal exchanger 110 and evaporator 160 from the upstream side of the air-flow direction inside air-conditioning shell 150 successively
Install.
Therefore, as shown in figure 3, being used as in evaporator 160 under the air conditioning mode of evaporator, from the row of the second expansion gear 140
The refrigerant for the low-temp low-pressure put is provided to evaporator 160, and in this example, passes through air blower（It is not shown）In air-conditioning
The air of the internal flow of shell 150 is entered while evaporator 160 are flowed through by the refrigerant with the low-temp low-pressure in evaporator 160
Row heat exchange and be converted to cold air, the inside of vehicle is then disposed to, so that the internal cooling of vehicle.
As shown in figure 4, internally heat exchanger 110 is used as the heat pump mode of condenser（First heating mode）Under, from compression
The refrigerant for the HTHP that machine 100 is discharged is provided to internal exchanger 110, and in this example, passes through air blower（Not
Show）With the height in internal exchanger 110 while the air of the internal flow of air-conditioning shell 150 is flowing through internal exchanger 110
The refrigerant of warm high pressure carries out heat exchange and is converted into warm air, the inside of vehicle is then disposed to, so as to heat vehicle
Inside.
Meanwhile, for size, it is preferable that evaporator 160 is more than internal exchanger 110.
In addition, for adjusting the temperature for bypassing the air capacity of internal exchanger 110 and flowing through the air capacity of internal exchanger 110
Degree regulation door 151 is arranged between the evaporator 160 inside air-conditioning shell 150 and internal exchanger 110.
The regulation of temperature adjustment door 151 bypasses the air capacity of internal exchanger 110 and flows through the air of internal exchanger 110
Amount, so as to suitably control the temperature of air discharged from air-conditioning shell 150.
In this example, under air conditioning mode, as shown in figure 3, when the front side channel of internal exchanger 110 is adjusted by temperature
When section door 151 is completely closed, bypass internal exchanger 110 due to flowing through the cold air of evaporator 160 and be provided to vehicle
Inside, therefore farthest perform cooling.
In heat pump mode（First heating mode）Under, as shown in figure 4, when the passage for bypassing internal exchanger 110 passes through temperature
When degree regulation door 151 is completely closed, because whole air are flowing through internal exchanger 110（As condenser）While changed
For warm air and warm air is provided to the inside of vehicle, therefore farthest perform heating.
In addition, external heat exchanger 130 is arranged on the outside of air-conditioning shell 150 and and refrigerant circulation lines（R）Connection, so that
Refrigerant circulation lines（R）Heat exchange is carried out between the refrigerant and outdoor air of middle circulation.
Here, external heat exchanger 130 is arranged at the front side of the enging cabin of vehicle, so that in external heat exchanger 130
Heat exchange is carried out between the refrigerant and outdoor air of portion's flowing.
Identical with internal exchanger 110 under air conditioning mode, external heat exchanger 130 is used as condenser, and in the example
In, it is cold while the refrigerant of the HTHP of the internal flow of external heat exchanger 130 is carrying out heat exchange with outdoor air
It is solidifying.In heat pump mode（First heating mode）Under, different from internal exchanger 110, external heat exchanger 130 is used as evaporator, and
And in this example, the same of heat exchange is being carried out with outdoor air in the refrigerant of the low temperature of the internal flow of external heat exchanger 130
When evaporated.
In addition, the refrigerant that the first expansion gear 120 is arranged between internal exchanger 110 and external heat exchanger 130 is followed
Loop wire（R）On, optionally expand the refrigerant supplied to external heat exchanger 130 according to air conditioning mode or heat pump mode.
That is, expansion line（R3）With the refrigerant circulation lines between internal exchanger 110 and external heat exchanger 130
（R）Install in parallel, and in this example, the first expansion gear 120, which has, is arranged on expansion line（R3）On aperture 121.
In addition, two-port valve 122 is arranged on expansion line（R3）And refrigerant circulation lines（R）Bifurcation at, two-port valve 122 is used
In the flow direction for changing refrigerant according to air conditioning mode or heat pump mode, led to the refrigerant for flowing through internal exchanger 110
Cross expansion line（R3）By aperture 121 or bypass aperture 121.
Therefore, under air conditioning mode, the refrigerant for being discharged from compressor 100 and flowing through internal exchanger 110 passes through two-way
Valve 122 bypasses aperture 121 and is provided to external heat exchanger 130.In heat pump mode（First heating mode）Under, from compressor
100 discharge and flow through the refrigerant of internal exchanger 110 and expanded simultaneously while aperture 121 are flowed through by two-port valve 122
It is provided to external heat exchanger 130.
Meanwhile, the two-port valve 122 of the first expansion gear 120 and aperture 121 can be formed according to separate mode or integral manner.
In addition, by-pass line（R1）Install in this manner：Make the refrigerant circulation of the entrance side of the second expansion gear 140
Line（R）With the refrigerant circulation lines of the outlet side of evaporator 160（R）It is connected to each other, so as to cycle through refrigerant circulation lines（R）
Refrigerant optionally bypass the second expansion gear 140 and evaporator 160.
As it is shown in the figures, by-pass line（R1）It is arranged in parallel with the second expansion gear 140 and evaporator 160.Namely
Say, by-pass line（R1）Entrance side be connected to the refrigerant for making the expansion gear 140 of external heat exchanger 130 and second be connected to each other and follow
Loop wire（R）, and by-pass line（R1）Outlet side be connected to the refrigerant for making evaporator 160 and compressor 100 be connected to each other and follow
Loop wire（R）.
As a result, under air conditioning mode, the refrigerant of external heat exchanger 130 is flowed through towards the second expansion gear 140 and is evaporated
Device 160 flows, still, in heat pump mode（First heating mode）Under, the refrigerant for flowing through external heat exchanger 130 passes through by-pass line
（R1）Compressor 100 is directly toward to flow and bypass the second expansion gear 140 and evaporator 160.
Here, the flow direction of refrigerant is changed according to air conditioning mode and heat pump mode by the first reversal valve 191 come real
It is existing.
First reversal valve 191 is arranged on by-pass line（R1）And refrigerant circulation lines（R）Bifurcation at, with according to this side
Formula changes the flow direction of refrigerant：The refrigerant for flowing through external heat exchanger 130 is other according to air conditioning mode or heat pump mode direction
Route（R1）Or second expansion gear 140 flow.
In this example, under air conditioning mode, the first reversal valve 191 changes the flowing side of refrigerant in this manner
To：Discharged from compressor 100 and flow through internal exchanger 110 and the refrigerant of external heat exchanger 130 the second expansion gear of direction
140 and evaporator 160 flow, also, in heat pump mode（First heating mode）Under, the first reversal valve 191 is in this manner
Change the flow direction of refrigerant：Discharged from compressor 100 and flow through internal exchanger 110, the first expansion gear 120 and outside
The refrigerant of heat exchanger 130 is towards by-pass line（R1）Flowing.
It is preferred that making the first reversal valve 191 be arranged on by-pass line（R1）Entrance side bifurcation at and use three
Port valve.
In addition to the first reversal valve 191 is using triple valve, it is preferable that triple valve is preferably used in the second reversal valve 192.
For heat to be supplied to along by-pass line（R1）The heating plant 180 of the refrigerant of flowing is arranged on by-pass line（R1）
On.
Heating plant 180 has water cooling type heat exchanger 181, and water cooling type heat exchanger 181 includes：Refrigerant heat exchanger portion 181a,
In by-pass line（R1）The refrigerant of middle flowing is flow in refrigerant heat exchanger portion 181a, by the useless of the electronic unit 200 of vehicle
Heat is supplied in by-pass line（R1）The refrigerant of middle flowing；Cooling water heat exchanging part 181b, the cooling circulated in electronic unit 200
Water flow to cooling water heat exchanger 181b, and cooling water heat exchanging part 181b is arranged at refrigerant heat exchanger portion 181a side.
Therefore, in the heat pump mode, heat pump can be carried by reclaiming the used heat of the electronic unit 200 from vehicle
High heating properties.
Motor, inverter and miscellaneous part be concurrently there are as the electronic unit 200 of vehicle.
In addition, storage tank 170 is arranged on the refrigerant circulation lines of the entrance side of compressor 100（R）On.
The refrigerant that storage tank 170 is supplied to compressor 100 is divided into liquid phase refrigerant and vapor phase refrigerant and only by gas phase
Cold-producing medium supply is to compressor 100.
In addition, being also internally mounted to internal exchanger in air-conditioning shell 150 for the electric heater 115 for improving the efficiency of heating surface
110 downstream.
That is, heat pump can be transported by making electric heater 115 be used as auxiliary thermal source when starting and starting vehicle
Then heating properties are improved, and also can operate electric heater 115 when heat pump lacks thermal source.
Preferably, electric heater 115 is ptc heater.
In addition, auxiliary bypass line（R2）In this manner with refrigerant circulation lines（R）Install in parallel：Flow through first
The refrigerant of expansion gear 120 optionally bypasses external heat exchanger 130.
In other words, auxiliary bypass line（R2）It is installed to be the outlet side of connection external heat exchanger 130 and the system of entrance side
Refrigerant cycle line（R）, so as to cycle through refrigerant circulation lines（R）Refrigerant bypass external heat exchanger 130.
In addition, the second reversal valve 192 of the flow direction for changing refrigerant is installed in this manner：Make in refrigeration
Agent circular route（R）The refrigerant of middle circulation optionally flow to auxiliary bypass line（R2）.
Second reversal valve 192 is arranged on auxiliary bypass line（R2）And refrigerant circulation lines（R）Bifurcation at, to change system
The flow direction of cryogen, so that refrigerant is towards external heat exchanger 130 or auxiliary bypass line（R2）Flowing.
In this example, when the frosting in external heat exchanger 130 or when outdoor temperature is less than zero degree, due to external heat-exchanging
Device 130 smoothly can not suck heat from outdoor air, therefore the second reversal valve 192 causes in refrigerant circulation lines（R）Middle circulation
Refrigerant bypass external heat exchanger 130.
Meanwhile, without making outdoor temperature be essentially 0 DEG C.Only when outdoor air and the system flowed in external heat exchanger 130
When heat exchange efficiency between cryogen is good, heat pump just makes cold-producing medium stream through external heat exchanger 130, and when heat exchange efficiency is bad
Heat pump makes refrigerant detour to pass through, so as to improve heating properties and efficiency.
In addition, in external heat exchanger 130 in the case of frosting, when refrigerant flow to auxiliary bypass line（R2）And bypass
During external heat exchanger 130, frosting can be made to postpone or remove frosting.
In addition, dehumidifying line（R4）Installed in refrigerant circulation lines（R）On, for will be in refrigerant circulation lines（R）Middle circulation
Refrigerant in a part be supplied to evaporator 160, dehumidifying is performed with the inside to vehicle.
In this example, in order to which the inside to vehicle is dehumidified, because the refrigerant of low temperature must be supplied to evaporator
160, therefore dehumidifying line（R4）The refrigerant of low temperature is connected in refrigerant circulation lines（R）The part of middle circulation.
More particularly, dehumidify line（R4）A part in the refrigerant for flowing through the first expansion gear 120 is supplied to and steamed
Send out device 160.
In other words, dehumidify line（R4）Make the refrigerant circulation lines of the outlet side of the first expansion gear 120（R）And evaporator
The refrigerant circulation lines of 160 entrance side（R）It is connected to each other.
In the accompanying drawings, dehumidify line（R4）Entrance be connected to system between the first expansion gear 120 and external heat exchanger 130
Refrigerant cycle line（R）, so that the part in refrigerant is being introduced in external heat-exchanging after the first expansion gear 120 is flowed through
Dehumidifying line is flow to before device 130（R4）And it is provided to evaporator 160.
In addition, under dehumidification mode, in refrigerant circulation lines（R）A part in the refrigerant of middle circulation passes through the line that dehumidifies
（R4）Supplied to evaporator 160, and in this example, in order to ensure heating properties, from refrigerant circulation lines（R）Diverging flow
To dehumidifying line（R4）The amount of refrigerant must be relatively fewer.
Therefore, in order that diverging flow to dehumidifying line（R4）Refrigerant amount be less than in refrigerant circulation lines（R）In follow
The flow of the refrigerant of ring, can be used ensuing two methods.
The first：Dehumidify line（R4）Pipe diameter be less than the first expansion gear 120 outlet side refrigerant circulation lines（R）
Pipe diameter so that diverging flow to dehumidifying line（R4）Refrigerant quantitative change it is few.
Second：Dehumidify line（R4）Pipe according in refrigerant circulation lines（R）Pipe above the mode of bifurcated connect so that
Diverging flow to dehumidifying line（R4）Refrigerant quantitative change it is few.
If that is, dehumidifying line（R4）Pipe according in refrigerant circulation lines（R）Pipe above the mode of bifurcated connect
Connect, then when in refrigerant circulation lines（R）The refrigerant of middle circulation is towards dehumidifying line above（R4）During bifurcated, bifurcated stream
Move dehumidifying line（R4）Refrigerant amount due to gravity（Own wt）And tail off.
In addition, opening and closing dehumidifying line（R4）On-off valve 195 be arranged on dehumidifying line（R4）On, with only in dehumidifying mould
The part flowed through under formula in the refrigerant of the first expansion gear 120 can flow to dehumidifying line（R4）.
In addition, heat pump also includes the controller for being used to control on-off valve 195（It is not shown）.
Controller opens dehumidifying line only under dehumidification mode by opening on-off valve 195（R4）, and be not dehumidifying
Under the pattern of pattern dehumidifying line is closed by closing on-off valve 195（R4）.
In addition, under dehumidification mode, when it is determined that the frosting of evaporator 160 or when sensing frosting, controller closes on-off valve
195, so as to prevent the refrigerant supplied to evaporator 160 from passing through the line that dehumidifies（R4）, to prevent from making evaporator under dehumidification mode
160 frostings.
As described above, under dehumidification mode, changed in cold-producing medium stream after the first expansion gear 120 being introduced in outside
A part before hot device 130 in refrigerant passes through the line that dehumidifies（R4）Supplied to evaporator 160.In this case, due to
Dehumidify line（R4）The refrigerant of middle flowing is introduced into the refrigerant before external heat exchanger 130, stated differently, since except
Wet line（R4）The refrigerant of middle flowing does not also carry out heat exchange with the outdoor cold air in external heat exchanger 130, therefore, in dehumidifying
Line（R4）The pressure of the refrigerant of middle flowing is higher than the pressure of evaporator 160.
That is, reference picture 5, based on dehumidifying line（R4）On-off valve 195, due under dehumidification mode, working as on-off
When valve 195 is opened, the pressure of C sides is higher than D sides（Vaporizer side）Pressure, therefore flow through the refrigerant of the first expansion gear 120
In a part pass through the line that dehumidifies（R4）The evaporator 160 of low pressure is smoothly flow to, therefore, heat pump can be smoothly right
The inside of vehicle performs dehumidifying.
In addition, as shown in Fig. 3 to Fig. 7, dehumidify line（R4）The refrigerant of the outlet entrance side that is connected to evaporator 160 follow
Loop wire（R）, or as shown in figure 8, dehumidifying line（R4）Outlet be connected to the second expansion gear 140.
In Fig. 3 into Fig. 7, dehumidify line（R4）Outlet and the refrigerant between the second expansion gear 140 and evaporator 160
Circular route（R）Connection.Therefore, dehumidifying line is flowed through（R4）Refrigerant be introduced directly into evaporator 160.
In fig. 8, dehumidify line（R4）Outlet be connected with the second expansion gear 140, but in this example, flow through dehumidifying
Line（R4）Refrigerant do not expanded in the second expansion gear 140, and be introduced into evaporator 160.
That is, as shown in figure 9, the second expansion gear 140 includes expansion valve 140a, expansion valve 140a, which has, to be used to make
The expansion runner 144 of refrigerant expansion and the bypass runner 147 that runner 144 is expanded for bypassing refrigerant.
In this example, dehumidify line（R4）Outlet be connected with expansion valve 140a bypass runner 147, and flow through dehumidifying
Line（R4）Refrigerant bypass expansion runner 144 by bypassing runner 147 and be provided to evaporator 160.
Reference picture 9, there will be briefly described the expansion valve 140a of the second expansion gear 140.Expansion valve 140a includes：Main body
141, with first flow 142 and second flow channel 143, and first flow 142 has the refrigeration for being used for making to be supplied to evaporator 160
The expansion runner 144 of agent expansion, the refrigerant discharged from evaporator 160 is flow in second flow channel 143；Valve body 145, is arranged on
Inside main body 141, the refrigerant of expansion runner 144 is flowed through for being adjusted by controlling the opening degree of expansion runner 144
Amount；Bar 146, liftably inside main body 141, the outlet side of flash-pot 160 is carried out and in second flow channel for basis
The temperature change of the refrigerants of flowing in 143 and lift valve body 145.
Here, expansion valve 140a main body 141 includes：Entrance 142a, for refrigerant to be incorporated into expansion runner 144；
142b is exported, for the refrigerant for flowing through expansion runner 144 to be discharged.
Inside main body 141, entrance 142a and outlet 142b in this example, are entered with being arranged in 90 degree of angle
Mouthful 142a and outlet 142b are separated from each other along vertical direction according to predetermined space, and expand runner 144 and formed in entrance
Between 142a and outlet 142b.
In addition, the dividing plate set according to the temperature change of the refrigerant flowed in second flow channel 143（Diaphragm,
It is not shown）At the upper end of main body 141.Therefore, valve is made while the raising and lowering according to the displacement of dividing plate of bar 146
Body 145 is operated.
In addition, bypass runner 147（Dehumidify line（R4）It is connected to bypass runner 147）Formed in main body 141, and with first
The outlet 142b of runner 142（The downstream of expansion runner 144 is arranged on along the flow direction of refrigerant）Connection.
In this example, the entrance 147a and first flow 142 of bypass runner 147 outlet 142b are collinearly arranged.
In other words, the entrance 147a of bypass runner 147 and the outlet 142b of first flow 142 are formed according to straight line.
Therefore, dehumidifying line is flowed through（R4）Refrigerant the expansion stream of the second expansion gear 140 is bypassed by bypassing runner 147
Road 144 is simultaneously supplied directly into evaporator 160.
Further, since the outlet 142b of bypass runner 147 and first flow 142 is formed according to straight line, therefore heat pump
Can minimize the hydrodynamic noise and the pressure loss of refrigerant.
Simultaneously as dehumidifying line（R4）Outlet be inserted into the bypass runner 147 of the second expansion gear 140, therefore remove
Wet line（R4）It can be simply assembled, and due to simple attachment structure the quantity of part can be reduced and system
Weight reduction.
Below, the operation of the Vehicular heat pump system by description according to a preferred embodiment of the invention（action）.
A air conditioning modes（Refrigerating mode）（See Fig. 3）
In air conditioning mode（Refrigerating mode）Under, as shown in figure 3, closing auxiliary bypass line by the second reversal valve 192（R2）,
And close by-pass line also by the first reversal valve 191（R1）, and two-port valve 122 closes aperture 121.
In addition, the cooling water for circulating through electronic unit 200 is not supplied to the water cooling type heat exchanger 181 of heating plant 180.
Meanwhile, flow through inside to realize that the temperature adjustment door 151 inside maximum cooling, air-conditioning shell 150 is closed
The passage of heat exchanger 110, so that the air being blown into by air blower in air-conditioning shell 150 is cold while evaporator 160 are flowed through
But and by bypassing internal exchanger 110 supplied to the inside of vehicle, so that the internal cooling of vehicle.
Next, refrigerant circulating process will be described.
The vapor phase refrigerant of the HTHP discharged after being compressed in compressor 100 is provided to installed in air-conditioning shell
Internal exchanger 110 inside 150.
As shown in figure 3, because temperature adjustment door 151 closes the passage of internal exchanger 110, therefore changed supplied to inside
The refrigerant of hot device 110 directly flow to external heat exchanger 130 in the case where not carrying out heat exchange with air.
The refrigerant for flowing to external heat exchanger 130 is condensed while heat exchange is carried out with outdoor air, therefore, gas
Phase refrigerant is converted to liquid phase refrigerant.
Meanwhile, internal exchanger 110 and external heat exchanger 130 both function as condenser, but refrigerant it is main with outdoor
Air condensed in the external heat exchanger 130 of heat exchange.
Then, the refrigerant for flowing through external heat exchanger 130 is depressurized and expanded while the second expansion gear 140 are flowed through,
The liquid phase refrigerant of low-temp low-pressure is accordingly changed into, is then introduced into evaporator 160.
The refrigerant being incorporated into evaporator 160 carries out heat by the air with being blown into by air blower in air-conditioning shell 150
Exchange and evaporate, while, because the evaporation latent heat by refrigerant carries out heat absorption and make it that air is cooled down, it is then, cold
But air is provided to the inside of vehicle, so that the internal cooling of vehicle.
Then, the refrigerant discharged from evaporator 160 is introduced in compressor 100 and repeats above-mentioned circulation.
First heating mode of B heat pump modes（See Fig. 4）
First heating mode of heat pump mode, which is operated in external heat exchanger 130, to be not present frosting or outdoor temperature and is higher than
In the case of zero degree.As shown in figure 4, closing auxiliary bypass line by the second reversal valve 192（R2）And pass through the first reversal valve 191
Open by-pass line（R1）So that refrigerant is not provided to the second expansion gear 140 and evaporator 160.
In addition, opening aperture 121 by two-port valve 122.
Meanwhile, the water cooling type heat exchanger of the chilled(cooling) water supply (CWS) heated by the electronic unit 200 of vehicle to heating plant 180
181 cooling water heat exchanging part 181b.
In addition, under the first heating mode, the temperature adjustment door 151 inside air-conditioning shell 150, which is closed, bypasses internal exchanger
110 passage, so that the air being blown into by air blower in air-conditioning shell 150 is flowing through evaporator 160（Shut down）Flow afterwards
It is changed into warm air while through internal exchanger 110, is then supplied to the inside of vehicle, heats the inside of vehicle.
Next, refrigerant circulating process will be described.
The vapor phase refrigerant of the HTHP discharged after being compressed in compressor 100 is introduced in installed in air-conditioning shell
In internal exchanger 110 inside 150.
The vapor phase refrigerant for the HTHP being incorporated into internal exchanger 110 by air blower with being blown into air-conditioning shell
Air in 150 be condensed while heat exchange, and in this example, the air for flowing through internal exchanger 110 is turned
Warm air is changed to and supplied to the inside of vehicle, so as to heat the inside of vehicle.
Then, the refrigerant discharged from internal exchanger 110 is depressurized while aperture 121 are flowed through by two-port valve 122
And expand, the liquid phase refrigerant of low-temp low-pressure is accordingly changed into, then, the external heat exchanger 130 as evaporator is provided to.
Refrigerant supplied to external heat exchanger 130 is evaporated while heat exchange is carried out with outdoor air and by the
One reversal valve 191 flows through by-pass line（R1）.In this example, by-pass line is flowed through（R1）Refrigerant flowing through water cooling type heat exchanger
Heat exchange is carried out with flowing through cooling water heat exchanging part 181b cooling water while 181 refrigerant heat exchanger portion 181a, with recovery vehicle
Electronic unit 200 used heat, then, refrigerant is introduced in compressor 100, to repeat above-mentioned circulation.
The dehumidification mode of first heating mode of C heat pump modes（See Fig. 5）
The dehumidification mode of first heating mode of heat pump mode only operates at same under Fig. 4 the first heating mode in system
When need to operate in the case of dehumidifying to the inside of vehicle.
Therefore, the parts different from Fig. 4 the first heating mode will only be described.
Under dehumidification mode, dehumidifying line is opened in addition by on-off valve 195 in the state of the operating of the first heating mode
（R4）.
In addition, the temperature adjustment door 151 inside air-conditioning shell 150 closes the passage for bypassing internal exchanger 110.Therefore, by
The air that air blower is blown into air-conditioning shell 150 is cooled while evaporator 160 are flowed through, and then, is flowing through internal heat
It is changed into warm air while device 110 and is provided to the inside of vehicle, so that heat pump can be added to the inside of vehicle
Heat.
In this example, because the amount of the refrigerant supplied to evaporator 160 is few and air cooling performance is low, therefore make
The change of indoor temperature is minimized, so that heat pump smoothly can dehumidify to the air for flowing through evaporator 160.
Next, the cyclic process that refrigerant will be described.
Flow through one in compressor 100, the refrigerant in the aperture 121 of the expansion gear 120 of internal exchanger 110 and first
Shunt through external heat exchanger 130, and the remainder in refrigerant flows through dehumidifying line（R4）.
The refrigerant for flowing through external heat exchanger 130 is evaporated while heat exchange is carried out with outdoor air, then, is passed through
First reversal valve 191 flows through by-pass line（R1）.In this example, by-pass line is flowed through（R1）Refrigerant flowing through water-cooling type heat exchange
Heat exchange is carried out with flowing through cooling water heat exchanging part 181b cooling water while the refrigerant heat exchanger portion 181a of device 181, to return
Refrigerant is evaporated while the used heat of the electronic unit 200 returned the vehicle to the garage and knock off.
Flow through dehumidifying line（R4）Cold-producing medium supply to evaporator 160, and with the air in the internal flow of air-conditioning shell 150
Evaporated while heat exchange.
In above process, the air for flowing through evaporator 160 is dehumidified, and the air being dehumidified is flowing through internal heat
It is changed into warm air while device 110, then, supplied to the inside of vehicle to perform heating.
Then, the refrigerant for flowing separately through water cooling type heat exchanger 181 and evaporator 160 converges to together and is introduced in pressure
In contracting machine 100, then, above-mentioned circulation is repeated.
Second heating mode of D heat pump modes（See Fig. 6）
Second heating mode of heat pump mode operates at frosting or outdoor temperature in external heat exchanger 130 and is less than zero degree
In the case of.As shown in fig. 6, opening auxiliary bypass line by the second reversal valve 192（R2）And side is opened by the first reversal valve 191
Route（R1）.
In addition, closing dehumidifying line by on-off valve 195（R4）, aperture 121 is opened by two-port valve 122, and pattern turns
Room air inflow pattern is changed to, for room air to be incorporated into air-conditioning shell 150.
Meanwhile, the water cooling type heat exchanger of the chilled(cooling) water supply (CWS) heated by the electronic unit 200 of vehicle to heating plant 180
181 cooling water heat exchanging part 181b.
In addition, under the second heating mode, the temperature adjustment door 151 inside air-conditioning shell 150, which is closed, bypasses internal exchanger
110 passage, so that the air being blown into by air blower in air-conditioning shell 150 is flowing through evaporator 160（Shut down）Flow afterwards
It is changed into warm air while through internal exchanger 110, is then supplied to the inside of vehicle, heats the inside of vehicle.
Next, refrigerant circulating process will be described.
The vapor phase refrigerant of the HTHP discharged after being compressed in compressor 100 is introduced in installed in air-conditioning shell
In internal exchanger 110 inside 150.
The vapor phase refrigerant for the HTHP being incorporated into internal exchanger 110 by air blower with being blown into air-conditioning shell
Air in 150 be condensed while heat exchange, and in this example, flows through the air conversion of internal exchanger 110
For warm air and the inside of vehicle is provided to, so as to be internally heated to vehicle.
Then, the refrigerant discharged from internal exchanger 110 is depressurized while aperture 121 are flowed through by two-port valve 122
And expand, it is accordingly changed into the liquid phase refrigerant of low-temp low-pressure.Then, refrigerant flow to auxiliary bypass line（R2）And bypass outside
Heat exchanger 130.
Then, auxiliary bypass line is flowed through（R2）Refrigerant by-pass line is flowed through by the first reversal valve 191（R1）.Show at this
In example, by-pass line is flowed through（R1）Refrigerant while the refrigerant heat exchanger portion 181a of water cooling type heat exchanger 181 is flowed through with stream
Cooling water through cooling water heat exchanging part 181b carries out heat exchange, with the used heat for the electronic unit 200 for reclaiming vehicle, then, will make
Cryogen is incorporated into compressor 100, to repeat above-mentioned circulation.
The dehumidification mode of second heating mode of E heat pump modes（See Fig. 7）
The dehumidification mode of second heating mode of heat pump mode only operates at same under Fig. 6 the second heating mode in system
When need to operate in the case of dehumidifying to the inside of vehicle.
Therefore, the parts different from Fig. 6 the second heating mode will only be described.
Under dehumidification mode, dehumidifying line is opened additionally by on-off valve 195 in the state of the operating of the second heating mode
（R4）.
In addition, the temperature adjustment door 151 inside air-conditioning shell 150 closes the passage for bypassing internal exchanger 110.Therefore, by
The air that air blower is blown into air-conditioning shell 150 is cooled while evaporator 160 are flowed through, and is then flowing through internal exchanger
It is changed into warm air while 110 and is provided to the inside of vehicle, so that heat pump can be internally heated to vehicle.
In this example, because the amount of the refrigerant supplied to evaporator 160 is few and air cooling performance is low, therefore make
The change of indoor temperature is minimized, so that heat pump smoothly can dehumidify to the air for flowing through evaporator 160.
Next, refrigerant circulating process will be described.
Flow through one in compressor 100, the refrigerant in the aperture 121 of the expansion gear 120 of internal exchanger 110 and first
Divide and pass through auxiliary bypass line（R2）External heat exchanger 130 is bypassed, and the remainder of refrigerant flows through dehumidifying line（R4）.
Flow through auxiliary bypass line（R2）Refrigerant by-pass line is flowed through by the first reversal valve 191（R1）.In this example,
Flow through by-pass line（R1）Refrigerant while the refrigerant heat exchanger portion 181a of water cooling type heat exchanger 181 is flowed through with flow through cooling
Water heat exchanging part 181b cooling water carries out heat exchange, to make refrigerant while the used heat of electronic unit 200 of vehicle is reclaimed
Evaporation.
Flow through dehumidifying line（R4）Cold-producing medium supply to evaporator 160, and with the air in the internal flow of air-conditioning shell 150
Evaporated while heat exchange.
In above process, the air for flowing through evaporator 160 is dehumidified, and the air being dehumidified is flowing through internal heat
It is changed into warm air while device 110, then, the inside of vehicle is provided to, to perform heating.
Then, the refrigerant for flowing separately through water cooling type heat exchanger 181 and evaporator 160 converges to together and is incorporated into compression
In machine 100, then, above-mentioned circulation is repeated.
Claims (8)
1. a kind of Vehicular heat pump system, including：
Compressor (100), in refrigerant circulation lines (R), for compressing and discharging refrigerant；
Internal exchanger (110), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and from compression
Heat exchange is carried out between the refrigerant of machine (100) discharge；
Evaporator (160), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and supplied to compression
Heat exchange is carried out between the refrigerant of machine (100)；
External heat exchanger (130), the outside installed in air-conditioning shell (150), for the system for making to circulate through refrigerant circulation lines (R)
Heat exchange is carried out between cryogen and outdoor air；
First expansion gear (120), is mounted on the refrigerant between internal exchanger (110) and external heat exchanger (130)
On circular route (R), for expanding refrigerant；
Second expansion gear (140), in the refrigerant circulation lines (R) of the entrance side of evaporator (160), for making refrigeration
Agent expands；
By-pass line (R1), according to the refrigerant circulation lines (R) and evaporator (160) of the entrance side for making the second expansion gear (140)
The such mode of refrigerant circulation lines (R) connection of outlet side install, it is swollen to make refrigerant bypass second in the heat pump mode
Swollen device (140) and evaporator (160)；
Dehumidify line (R4), in refrigerant circulation lines (R), for the refrigerant that will be circulated in refrigerant circulation lines (R)
In a part be supplied to evaporator (160), to be dehumidified in the heat pump mode to the inside of vehicle,
Wherein, the part that dehumidifying line (R4) will be flowed through in the refrigerant of the first expansion gear (120) is supplied to evaporator
(160),
Wherein, the second expansion gear (140) includes：Expansion valve (140a), expansion valve (140a), which has, to be used to expand refrigerant
Expansion runner (144) and for make refrigerant bypass expansion runner (144) bypass runner (147),
Wherein, dehumidifying line (R4) makes the refrigerant circulation lines (R) and expansion valve (140a) of the outlet side of the first expansion gear (120)
Bypass runner (147) be connected to each other, with flow through dehumidifying line (R4) refrigerant by bypass runner (147) bypass expansion stream
Road (144) is simultaneously provided to evaporator (160),
Wherein, the expansion valve (140a) includes：Entrance (142a), for refrigerant to be incorporated into expansion runner (144)；Go out
Mouth (142b), the discharge refrigerant for expansion runner (144) will to be flowed through,
Wherein, the entrance (147a) for being connected to dehumidifying line (R4) of bypass runner (147) exports (142b) collinearly cloth with described
Put so that the refrigerant for flowing through dehumidifying line (R4) bypasses the expansion runner of the second expansion gear (140) by bypassing runner (147)
(144) it is directly supplied to evaporator (160).
2. heat pump according to claim 1, wherein, dehumidifying line (R4) makes the outlet side of the first expansion gear (120)
Refrigerant circulation lines (R) and the refrigerant circulation lines (R) of entrance side of evaporator (160) be connected to each other.
3. heat pump according to claim 1, wherein, the on-off valve (195) for opening and closing dehumidifying line (R4)
On dehumidifying line (R4) so that flow through the part in the refrigerant of the first expansion gear (120) only under dehumidification mode
It flow to dehumidifying line (R4).
4. heat pump according to claim 3, the heat pump also includes：
Controller, for controlling on-off valve (195), and under dehumidification mode, when it is determined that or sense evaporator (160) knot
When white, controller control closes on-off valve (195), to prevent refrigerant to be supplied to evaporator by the line that dehumidifies (R4)
(160)。
5. heat pump according to claim 1, wherein, heating plant (180) is arranged on by-pass line (R1), by car
Electronic unit (200) used heat be supplied to along by-pass line (R1) flow refrigerant.
6. heat pump according to claim 1, wherein, auxiliary bypass line (R2) is arranged in refrigerant circulation lines (R),
External heat exchanger is bypassed with the refrigerant that the first expansion gear (120) is flowed through when frosting in external heat exchanger (130)
(130)。
7. a kind of Vehicular heat pump system, including：
Compressor (100), in refrigerant circulation lines (R), for compressing and discharging refrigerant；
Internal exchanger (110), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and from compression
Heat exchange is carried out between the refrigerant of machine (100) discharge；
Evaporator (160), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and supplied to compression
Heat exchange is carried out between the refrigerant of machine (100)；
External heat exchanger (130), the outside installed in air-conditioning shell (150), for the system for making to circulate through refrigerant circulation lines (R)
Heat exchange is carried out between cryogen and outdoor air；
First expansion gear (120), is mounted on the refrigerant between internal exchanger (110) and external heat exchanger (130)
On circular route (R), for expanding refrigerant；
Second expansion gear (140), in the refrigerant circulation lines (R) of the entrance side of evaporator (160), for making refrigeration
Agent expands；
By-pass line (R1), according to the refrigerant circulation lines (R) and evaporator (160) of the entrance side for making the second expansion gear (140)
The such mode of refrigerant circulation lines (R) connection of outlet side install, it is swollen to make refrigerant bypass second in the heat pump mode
Swollen device (140) and evaporator (160)；
Dehumidify line (R4), in refrigerant circulation lines (R), for the refrigerant that will be circulated in refrigerant circulation lines (R)
In a part be supplied to evaporator (160), to be dehumidified in the heat pump mode to the inside of vehicle,
Wherein, the part that dehumidifying line (R4) will be flowed through in the refrigerant of the first expansion gear (120) is supplied to evaporator
(160),
Wherein, the pipe diameter of dehumidifying line (R4) is less than the pipe of the refrigerant circulation lines (R) of the outlet side of the first expansion gear (120)
Diameter so that the amount that the refrigerant of the dehumidifying line (R4) is branched to from the refrigerant circulation lines (R) is relatively fewer.
8. a kind of vehicle heat pump, including：
Compressor (100), in refrigerant circulation lines (R), for compressing and discharging refrigerant；
Internal exchanger (110), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and from compression
Heat exchange is carried out between the refrigerant of machine (100) discharge；
Evaporator (160), it is internal installed in air-conditioning shell (150), for making the internal air of air-conditioning shell (150) and supplied to compression
Heat exchange is carried out between the refrigerant of machine (100)；
External heat exchanger (130), the outside installed in air-conditioning shell (150), for the system for making to circulate through refrigerant circulation lines (R)
Heat exchange is carried out between cryogen and outdoor air；
First expansion gear (120), is mounted on the refrigerant between internal exchanger (110) and external heat exchanger (130)
On circular route (R), for expanding refrigerant；
Second expansion gear (140), in the refrigerant circulation lines (R) of the entrance side of evaporator (160), for making refrigeration
Agent expands；
By-pass line (R1), according to the refrigerant circulation lines (R) and evaporator (160) of the entrance side for making the second expansion gear (140)
The such mode of refrigerant circulation lines (R) connection of outlet side install, it is swollen to make refrigerant bypass second in the heat pump mode
Swollen device (140) and evaporator (160)；
Dehumidify line (R4), in refrigerant circulation lines (R), for the refrigerant that will be circulated in refrigerant circulation lines (R)
In a part be supplied to evaporator (160), to be dehumidified in the heat pump mode to the inside of vehicle,
Wherein, the part that dehumidifying line (R4) will be flowed through in the refrigerant of the first expansion gear (120) is supplied to evaporator
(160),
Wherein, on pipe of the pipe of dehumidifying line (R4) according to the refrigerant circulation lines (R) of the outlet side in the first expansion gear (120)
Mode as square bifurcated is connected so that the refrigerant circulated in the refrigerant circulation lines (R) branches to superposed
The amount for branching to the refrigerant of the dehumidifying line (R4) during dehumidifying line (R4) because of gravity is relatively fewer.
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|---|---|---|---|
| CN201410125911.7A CN104949385B (en) | 2014-03-31 | 2014-03-31 | vehicular heat pump system |
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|---|---|---|---|
| CN201410125911.7A CN104949385B (en) | 2014-03-31 | 2014-03-31 | vehicular heat pump system |
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| CN104949385B true CN104949385B (en) | 2017-08-25 |
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| CN107031347B (en) * | 2016-01-13 | 2019-08-09 | 翰昂汽车零部件有限公司 | In-vehicle air conditioner |
| DE102016214116A1 (en) * | 2016-08-01 | 2018-02-01 | Volkswagen Aktiengesellschaft | Air conditioning device for a motor vehicle |
| CN108072186B (en) * | 2016-11-14 | 2021-09-28 | 杭州三花研究院有限公司 | Air conditioning system |
| US10744849B2 (en) | 2018-08-14 | 2020-08-18 | Ford Global Technologies, Llc | Closed loop auxiliary heating circuit and an electric motor vehicle incorporating that circuit |
| WO2020204570A1 (en) * | 2019-04-05 | 2020-10-08 | 한온시스템 주식회사 | Heat management system for vehicle |
| JP7410672B2 (en) * | 2019-08-28 | 2024-01-10 | サンデン株式会社 | Vehicle air conditioner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102679477A (en) * | 2011-03-09 | 2012-09-19 | 汉拏空调株式会社 | Heat pump system for vehicle |
| CN102947113A (en) * | 2010-06-16 | 2013-02-27 | 日产自动车株式会社 | Vehicle air conditioning system |
| CN103148642A (en) * | 2011-12-07 | 2013-06-12 | 现代自动车株式会社 | Condenser for vehicle |
| WO2013084737A1 (en) * | 2011-12-09 | 2013-06-13 | サンデン株式会社 | Vehicle air conditioner |
| CN103303097A (en) * | 2012-03-05 | 2013-09-18 | 本田技研工业株式会社 | Air conditioner for vehicle |
| JP2014034371A (en) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | Vehicle air conditioner |
| CN104833129A (en) * | 2014-02-06 | 2015-08-12 | 汉拿伟世通空调有限公司 | Heat pump system for vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012233676A (en) * | 2011-04-21 | 2012-11-29 | Denso Corp | Heat pump cycle |
-
2014
- 2014-03-31 CN CN201410125911.7A patent/CN104949385B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102947113A (en) * | 2010-06-16 | 2013-02-27 | 日产自动车株式会社 | Vehicle air conditioning system |
| CN102679477A (en) * | 2011-03-09 | 2012-09-19 | 汉拏空调株式会社 | Heat pump system for vehicle |
| CN103148642A (en) * | 2011-12-07 | 2013-06-12 | 现代自动车株式会社 | Condenser for vehicle |
| WO2013084737A1 (en) * | 2011-12-09 | 2013-06-13 | サンデン株式会社 | Vehicle air conditioner |
| CN103303097A (en) * | 2012-03-05 | 2013-09-18 | 本田技研工业株式会社 | Air conditioner for vehicle |
| JP2014034371A (en) * | 2012-08-10 | 2014-02-24 | Honda Motor Co Ltd | Vehicle air conditioner |
| CN104833129A (en) * | 2014-02-06 | 2015-08-12 | 汉拿伟世通空调有限公司 | Heat pump system for vehicle |
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|---|---|
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