CN215321886U - Heat pump defrosting system, vehicle heat pump air conditioner and electric automobile - Google Patents
Heat pump defrosting system, vehicle heat pump air conditioner and electric automobile Download PDFInfo
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- CN215321886U CN215321886U CN202121951152.1U CN202121951152U CN215321886U CN 215321886 U CN215321886 U CN 215321886U CN 202121951152 U CN202121951152 U CN 202121951152U CN 215321886 U CN215321886 U CN 215321886U
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Abstract
The utility model provides a heat pump defrosting system, a vehicle heat pump air conditioner and an electric vehicle, wherein the heat pump defrosting system can defrost a heat exchanger outside a vehicle through a hot gas bypass defrosting loop, so that the heat exchanger outside the vehicle can be defrosted under the condition of uninterrupted heating, namely, the heat can be continuously output to a passenger cabin while the defrosting function is realized, the comfort level of the passenger cabin is better, the defrosting scheme is more scientific and reasonable, and the technical problem that the comfort level of the passenger cabin is seriously influenced due to the unreasonable shutdown defrosting scheme of the existing heat pump system is solved.
Description
Technical Field
The utility model relates to the technical field of air conditioner defrosting, in particular to a heat pump defrosting system, a vehicle heat pump air conditioner and an electric vehicle.
Background
When the vehicle heat pump air conditioner performs heating circulation in winter, the heat exchanger outside the vehicle is used as an evaporator to absorb heat of the environment outside the vehicle, and the condenser inside the vehicle releases heat for the environment inside the vehicle to realize heating in winter. Because the environment temperature outside the car is lower winter, if the surface temperature of the heat exchanger outside the car is lower than the dew point temperature of the air, then the moisture in the air can frost on the surface of the heat exchanger outside the car, and the frost layer can obstruct the heat exchange between the heat exchanger outside the car and the external environment, so that the normal operation of the system is not facilitated, and even the normal heating function can not be provided. Therefore, the defrosting of the heat pump air conditioner of the pure electric vehicle in winter is a problem which needs to be solved in the field.
The existing heat pump for the vehicle mostly adopts a shutdown defrosting technology, namely, a heat pump system needs to be specially used for defrosting of a heat exchanger outside the vehicle, so that the heat pump system cannot continuously heat a passenger compartment, and the comfort level of the passenger compartment is greatly influenced.
In conclusion, the shutdown defrosting scheme of the existing heat pump system is unreasonable, and the comfort level of the passenger compartment is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a heat pump defrosting system, a heat pump air conditioner for a vehicle, and an electric vehicle, so as to solve the technical problem that the shutdown defrosting scheme of the existing heat pump system is unreasonable, and the comfort of the passenger compartment is seriously affected.
In a first aspect, an embodiment of the present invention provides a heat pump defrosting system, including: the defrosting device comprises a heat pump system body and a hot gas bypass defrosting loop;
the heat pump system body includes: the internal condenser is connected with the external heat exchanger through a first pipeline, the first throttling mechanism is arranged on the first pipeline, the external heat exchanger is connected with the internal evaporator through a second pipeline, the second pipeline comprises a common pipeline, a first pipeline branch and a second pipeline branch, the first pipeline branch and the second pipeline branch are respectively connected with the common pipeline, the common pipeline is arranged close to one side of the external heat exchanger, the first electromagnetic valve is arranged on the first pipeline branch, the second throttling mechanism is arranged on the second pipeline branch, and the gas-liquid separator is connected with the first pipeline branch close to the internal evaporator through a third pipeline, the gas-liquid separator is connected with the compressor through a fourth pipeline, and the compressor is connected with the condenser in the automobile through a fifth pipeline;
the hot gas bypass defrost circuit comprising: the heat exchanger comprises a sixth pipeline and a third throttling mechanism arranged on the sixth pipeline, wherein one end of the sixth pipeline is connected with the first pipeline close to the heat exchanger part outside the vehicle, and the other end of the sixth pipeline is connected with the fifth pipeline.
Further, the method also comprises the following steps: a one-way valve;
the check valve is arranged on a first pipeline between the first throttling mechanism and the heat exchanger outside the vehicle.
Further, the heat pump system body further includes: a second solenoid valve;
one end of the second electromagnetic valve is connected with the first pipeline close to the internal condenser through a seventh pipeline, and the other end of the second electromagnetic valve is connected with the fifth pipeline through an eighth pipeline.
Further, the first throttling mechanism, the second throttling mechanism and the third throttling mechanism are flow-controllable throttling mechanisms.
Further, the first throttling mechanism, the second throttling mechanism and the third throttling mechanism are electronic expansion valves.
Further, the method also comprises the following steps: a heat sink;
the heat dissipation device is arranged adjacent to the exterior heat exchanger.
Further, the heat dissipation device includes: a fan.
Further, the method also comprises the following steps: a blower;
the blower is disposed in the passenger compartment.
In a second aspect, an embodiment of the present invention further provides a heat pump air conditioner for a vehicle, where the heat pump defrosting system of the first aspect is adopted to defrost a heat exchanger outside a vehicle.
In a third aspect, an embodiment of the present invention further provides an electric vehicle, where the vehicle heat pump air conditioner according to the second aspect is arranged on the electric vehicle.
Further, the method also comprises the following steps: an electric vehicle body; the vehicle heat pump air conditioner is arranged on the electric automobile body.
In an embodiment of the present invention, there is provided a heat pump defrosting system including: the defrosting device comprises a heat pump system body and a hot gas bypass defrosting loop; the heat pump system body includes: an internal condenser, a first throttle mechanism, an external heat exchanger, an internal evaporator, a second throttle mechanism, a first electromagnetic valve, a gas-liquid separator and a compressor, wherein the internal condenser is connected with the external heat exchanger through a first pipeline, the first pipeline is provided with a first throttling mechanism, the external heat exchanger is connected with the internal evaporator through a second pipeline, the second pipeline comprises a common pipeline, a first pipeline branch and a second pipeline branch, the first pipeline branch and the second pipeline branch are respectively connected with the common pipeline, the common pipeline is arranged close to one side of the heat exchanger outside the vehicle, a first electromagnetic valve is arranged on a first pipeline branch, a second throttling mechanism is arranged on a second pipeline branch, the gas-liquid separator is connected with the first pipeline branch close to the evaporator part inside the vehicle through a third pipeline, the gas-liquid separator is connected with the compressor through a fourth pipeline, and the compressor is connected with the condenser inside the vehicle through a fifth pipeline; the hot gas bypass defrost circuit includes: the heat exchanger comprises a sixth pipeline and a third throttling mechanism arranged on the sixth pipeline, wherein one end of the sixth pipeline is connected with the first pipeline close to the heat exchanger part outside the vehicle, and the other end of the sixth pipeline is connected with the fifth pipeline. According to the heat pump defrosting system, the heat exchanger outside the vehicle can be defrosted through the hot gas bypass defrosting loop, so that the heat exchanger outside the vehicle can be defrosted under the condition of uninterrupted heating, namely, the heat can be continuously output to the passenger compartment while the defrosting function is realized, the comfort level of the passenger compartment is better, the defrosting scheme is more scientific and reasonable, and the technical problems that the shutdown defrosting scheme of the existing heat pump system is unreasonable and the comfort level of the passenger compartment is seriously influenced are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a heat pump defrosting system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a conventional heat pump system according to an embodiment of the present invention.
Icon: 11-internal condenser; 12-a first throttling mechanism; 13-an exterior heat exchanger; 14-an in-vehicle evaporator; 15-a second throttling mechanism; 16-a first solenoid valve; 17-a gas-liquid separator; 18-a compressor; 19-a third throttling mechanism; 20-a one-way valve; 21-a second solenoid valve; 22-a heat sink; 23-blower.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The existing heat pump for the vehicle mostly adopts a shutdown defrosting technology, namely, a heat pump system needs to be specially used for defrosting of a heat exchanger outside the vehicle, so that the heat pump system cannot continuously heat a passenger compartment, and the comfort level of the passenger compartment is greatly influenced.
Based on the heat pump defrosting system, the heat exchanger outside the vehicle is defrosted through the hot gas bypass defrosting loop, so that the heat exchanger outside the vehicle is defrosted under the condition of uninterrupted heating, namely, the heat can be continuously output to the passenger compartment while the defrosting function is realized, the comfort level of the passenger compartment is better, and the defrosting scheme is more scientific and reasonable.
For the convenience of understanding the present embodiment, a detailed description will be given to a heat pump defrosting system disclosed in the present embodiment.
The first embodiment is as follows:
fig. 1 is a schematic structural diagram of a heat pump defrosting system according to an embodiment of the present invention, as shown in fig. 1, the heat pump defrosting system includes: the defrosting device comprises a heat pump system body and a hot gas bypass defrosting loop;
the heat pump system body includes: the system comprises an internal condenser 11, a first throttling mechanism 12, an external heat exchanger 13, an internal evaporator 14, a second throttling mechanism 15, a first electromagnetic valve 16, a gas-liquid separator 17 and a compressor 18, wherein the internal condenser 11 is connected with the external heat exchanger 13 through a first pipeline, the first pipeline is provided with the first throttling mechanism 12, the external heat exchanger 13 is connected with the internal evaporator 14 through a second pipeline, the second pipeline comprises a common pipeline, a first pipeline branch and a second pipeline branch, the first pipeline branch and the second pipeline branch are respectively connected with the common pipeline, the common pipeline is arranged close to one side of the external heat exchanger 13, the first pipeline branch is provided with the first electromagnetic valve 16, the second pipeline branch is provided with the second throttling mechanism 15, the gas-liquid separator 17 is connected with the first pipeline branch close to the internal evaporator 14 through a third pipeline, the gas-liquid separator 17 is connected with the compressor 18 through a fourth pipeline, the compressor 18 is connected with the internal condenser 11 through a fifth pipeline;
the hot gas bypass defrost circuit includes: and one end of the sixth pipeline is connected with the first pipeline close to the part of the heat exchanger 13 outside the vehicle, and the other end of the sixth pipeline is connected with the fifth pipeline.
Referring to fig. 1, the operation of the heat pump defrost system of the present invention will be described.
When defrosting is needed, the original heating mode of the heat pump system body continues to work, and meanwhile, the hot gas bypass defrosting loop is opened. Thus, the high temperature gas absorbed from the exterior heat exchanger 13 reaches the first electromagnetic valve 16 through the pipeline, and then reaches the compressor 18 through the gas-liquid separator 17, a part of the high pressure and high temperature gaseous refrigerant flowing out of the compressor 18 is converted into a low pressure and relatively high temperature gas state through the third throttling mechanism 19 of the hot gas bypass defrosting circuit, and the other part of the high pressure and high temperature gaseous refrigerant reaches the interior condenser 11 of the heat pump system body, and then releases heat to the passenger compartment through the interior condenser 11, and at the same time, the condenser mixes the obtained gas-liquid two-phase refrigerant in the passenger compartment with the low pressure and relatively high temperature gas after passing through the first throttling mechanism 12, and finally, the gas enters the exterior heat exchanger 13 to evaporate, and the defrosting effect is achieved through the relatively high temperature.
Fig. 2 is a schematic view of a conventional heat pump system according to the present invention.
During heating, high-temperature gas absorbed by the exterior heat exchanger 13 reaches the first electromagnetic valve 16 through a pipeline, then reaches the compressor 18 through the gas-liquid separator 17, high-pressure and high-temperature gaseous refrigerant flowing out of the compressor 18 reaches the interior condenser 11, then heat is released to the passenger compartment through the interior condenser 11, and meanwhile, the obtained gas-liquid two-phase refrigerant in the passenger compartment reaches the exterior heat exchanger 13 through the first throttling mechanism 12 and is discharged to the external environment;
during the defrosting operation, the high-temperature gas absorbed from the interior evaporator 14 reaches the gas-liquid separator 17 through the pipeline, and then reaches the compressor 18, the high-pressure high-temperature gaseous refrigerant flowing out of the compressor 18 reaches the exterior heat exchanger 13 after passing through the second electromagnetic valve 21 and the first throttling mechanism 12, so as to defrost the exterior heat exchanger 13, and the cold air defrosted by the exterior heat exchanger 13 enters the interior evaporator 14 through the pipeline and the second throttling mechanism 15, so that the interior evaporator 14 cools the passenger compartment. Therefore, the mode of the defrosting work is to refrigerate the passenger compartment to defrost the heat exchanger 13 outside the vehicle, and the defrosting of the heat exchanger 13 outside the vehicle is realized at the cost of sacrificing the comfort level of the passenger compartment, so that the defrosting work is not scientific and reasonable enough, and the comfort level of the passenger compartment is influenced.
In an embodiment of the present invention, there is provided a heat pump defrosting system including: the defrosting device comprises a heat pump system body and a hot gas bypass defrosting loop; the heat pump system body includes: the system comprises an internal condenser 11, a first throttling mechanism 12, an external heat exchanger 13, an internal evaporator 14, a second throttling mechanism 15, a first electromagnetic valve 16, a gas-liquid separator 17 and a compressor 18, wherein the internal condenser 11 is connected with the external heat exchanger 13 through a first pipeline, the first pipeline is provided with the first throttling mechanism 12, the external heat exchanger 13 is connected with the internal evaporator 14 through a second pipeline, the second pipeline comprises a common pipeline, a first pipeline branch and a second pipeline branch, the first pipeline branch and the second pipeline branch are respectively connected with the common pipeline, the common pipeline is arranged close to one side of the external heat exchanger 13, the first pipeline branch is provided with the first electromagnetic valve 16, the second pipeline branch is provided with the second throttling mechanism 15, the gas-liquid separator 17 is connected with the first pipeline branch close to the internal evaporator 14 through a third pipeline, the gas-liquid separator 17 is connected with the compressor 18 through a fourth pipeline, the compressor 18 is connected with the internal condenser 11 through a fifth pipeline; the hot gas bypass defrost circuit includes: and one end of the sixth pipeline is connected with the first pipeline close to the part of the heat exchanger 13 outside the vehicle, and the other end of the sixth pipeline is connected with the fifth pipeline. As can be seen from the above description, the heat pump defrosting system of the present invention can defrost the heat exchanger 13 outside the vehicle through the hot gas bypass defrosting circuit, so as to defrost the heat exchanger 13 outside the vehicle under the condition of uninterrupted heating, that is, while the defrosting function is realized, heat can be continuously output to the passenger compartment, the comfort level of the passenger compartment is better, the defrosting scheme is more scientific and reasonable, and the technical problems that the shutdown defrosting scheme of the existing heat pump system is unreasonable and the comfort level of the passenger compartment is seriously affected are solved.
In an alternative embodiment of the present invention, referring to fig. 1, the heat pump defrost system further comprises: a check valve 20;
the check valve 20 is provided on the first line between the first throttle mechanism 12 and the exterior heat exchanger 13.
The check valve 20 can prevent the gas with low pressure and relatively high temperature flowing out from the third throttling mechanism 19 from entering the first throttling mechanism 12 and further entering the in-vehicle condenser 11, which is safer.
In an alternative embodiment of the present invention, referring to fig. 1, the heat pump system body further includes: a second electromagnetic valve 21;
one end of the second electromagnetic valve 21 is connected with the first pipeline close to the internal condenser 11 through a seventh pipeline, and the other end of the second electromagnetic valve 21 is connected with the fifth pipeline through an eighth pipeline.
The second electromagnetic valve 21 is used when the in-vehicle evaporator 14 performs cooling, and the cooling is not the focus of the present application, and therefore, the details of the cooling operation process are not described herein.
In an alternative embodiment of the present invention, the first throttling means 12, the second throttling means 15 and the third throttling means 19 are flow-rate-controllable throttling means.
In an alternative embodiment of the utility model, the first throttling means 12, the second throttling means 15 and the third throttling means 19 are electronic expansion valves.
In an alternative embodiment of the present invention, referring to fig. 1, the heat pump defrost system further comprises: a heat sink 22;
the heat sink 22 is disposed adjacent to the exterior heat exchanger 13, and dissipates heat from the exterior heat exchanger 13.
In an alternative embodiment of the present invention, the heat sink 22 comprises: a fan.
In an alternative embodiment of the present invention, referring to fig. 1, the heat pump defrost system further comprises: a blower 23;
the blower 23 is provided in the passenger compartment.
Example two:
the embodiment of the utility model also provides a vehicle heat pump air conditioner which adopts the heat pump defrosting system in the first embodiment to defrost the heat exchanger 13 outside the vehicle.
Example three:
the embodiment of the utility model also provides an electric automobile, and the vehicle heat pump air conditioner in the second embodiment is arranged on the electric automobile.
Specifically, the vehicle heat pump air conditioner is arranged on the electric vehicle body.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A heat pump defrost system, comprising: the defrosting device comprises a heat pump system body and a hot gas bypass defrosting loop;
the heat pump system body includes: the internal condenser is connected with the external heat exchanger through a first pipeline, the first throttling mechanism is arranged on the first pipeline, the external heat exchanger is connected with the internal evaporator through a second pipeline, the second pipeline comprises a common pipeline, a first pipeline branch and a second pipeline branch, the first pipeline branch and the second pipeline branch are respectively connected with the common pipeline, the common pipeline is arranged close to one side of the external heat exchanger, the first electromagnetic valve is arranged on the first pipeline branch, the second throttling mechanism is arranged on the second pipeline branch, and the gas-liquid separator is connected with the first pipeline branch close to the internal evaporator through a third pipeline, the gas-liquid separator is connected with the compressor through a fourth pipeline, and the compressor is connected with the condenser in the automobile through a fifth pipeline;
the hot gas bypass defrost circuit comprising: the heat exchanger comprises a sixth pipeline and a third throttling mechanism arranged on the sixth pipeline, wherein one end of the sixth pipeline is connected with the first pipeline close to the heat exchanger part outside the vehicle, and the other end of the sixth pipeline is connected with the fifth pipeline.
2. The heat pump defrost system of claim 1 further comprising: a one-way valve;
the check valve is arranged on a first pipeline between the first throttling mechanism and the heat exchanger outside the vehicle.
3. The heat pump defrost system of claim 1, wherein the heat pump system body further comprises: a second solenoid valve;
one end of the second electromagnetic valve is connected with the first pipeline close to the internal condenser through a seventh pipeline, and the other end of the second electromagnetic valve is connected with the fifth pipeline through an eighth pipeline.
4. The heat pump defrost system of claim 1 wherein the first, second and third throttle mechanisms are flow-controllable throttle mechanisms.
5. The heat pump defrost system of claim 1 wherein the first, second and third throttle mechanisms are electronic expansion valves.
6. The heat pump defrost system of claim 1 further comprising: a heat sink;
the heat dissipation device is arranged adjacent to the exterior heat exchanger.
7. The heat pump defrost system of claim 1 further comprising: a blower;
the blower is disposed in the passenger compartment.
8. A heat pump air conditioner for a vehicle, characterized in that the heat pump air conditioner for a vehicle defrosts an exterior heat exchanger using the heat pump defrosting system of any one of claims 1 to 7.
9. An electric vehicle characterized in that the vehicle heat pump air conditioner as claimed in claim 8 is provided on the electric vehicle.
10. The electric vehicle according to claim 9, further comprising: an electric vehicle body; the vehicle heat pump air conditioner is arranged on the electric automobile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121951152.1U CN215321886U (en) | 2021-08-18 | 2021-08-18 | Heat pump defrosting system, vehicle heat pump air conditioner and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121951152.1U CN215321886U (en) | 2021-08-18 | 2021-08-18 | Heat pump defrosting system, vehicle heat pump air conditioner and electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN215321886U true CN215321886U (en) | 2021-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121951152.1U Active CN215321886U (en) | 2021-08-18 | 2021-08-18 | Heat pump defrosting system, vehicle heat pump air conditioner and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215321886U (en) |
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2021
- 2021-08-18 CN CN202121951152.1U patent/CN215321886U/en active Active
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