CN210425664U - Waste heat recovery system using throttling sleeve - Google Patents
Waste heat recovery system using throttling sleeve Download PDFInfo
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- CN210425664U CN210425664U CN201921181708.6U CN201921181708U CN210425664U CN 210425664 U CN210425664 U CN 210425664U CN 201921181708 U CN201921181708 U CN 201921181708U CN 210425664 U CN210425664 U CN 210425664U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The utility model belongs to the field of new energy automobile heat pump air conditioning systems, and relates to a waste heat recovery system using a throttling short pipe, which comprises a refrigerant loop, a cooling liquid loop, a battery cooling system loop and a cooling liquid loop of a heating cycle; the refrigerant loop comprises a compressor, a gas-liquid separator, a waste heat recovery loop and a water-cooled condenser which are connected in sequence, and the water-cooled condenser is connected back to the compressor; the waste heat recovery loop comprises a first stop valve and an electronic expansion valve which are connected in parallel, one end of the waste heat recovery loop is connected with the water-cooled condenser, the other end of the waste heat recovery loop is connected with the external condenser, and the waste heat recovery loop flows back to the water-cooled condenser through the waste heat recoverer and the throttling short pipe; and a heating, ventilating and air conditioning assembly and a battery cooler are respectively connected in parallel between the gas-liquid separator and the waste heat recovery loop. The cost of the whole system can be reduced on the premise of ensuring basically equivalent heat exchange quantity by arranging the throttling short pipe. The heating performance of the heat pump air conditioner can be improved, the cruising ability of the whole vehicle is improved, and the heat pump air conditioner has certain industrial practical prospect.
Description
Technical Field
The utility model belongs to new energy automobile heat pump air conditioning system field relates to an use waste heat recovery system of throttle nozzle stub.
Background
The heating of new energy vehicles, especially electric vehicles, always influences the driving mileage and the comfort of drivers and passengers, and the greatest difference of the new energy vehicles compared with the air conditioning systems of the traditional vehicles lies in the change of heating modes. The traditional electric vehicle heats coolant by a high-pressure water heating PTC, the coolant flows into a warm air machine core, and air flow in a heating ventilation air conditioning assembly (HVAC) obtains heat after passing through the warm air machine core, so that heating can be realized; however, such a heating method consumes electric energy directly, and the driving mileage during heating is reduced by 40% to 50% as compared with that during non-use. As a leading-edge scheme of the current electric automobile, the heat pump air conditioning system can provide more heat than PTC under the condition of consuming electric energy, so that the heat pump can consume less energy under the same energy requirement, and the driving mileage is reduced by 20% compared with that of the heat pump air conditioning system without using the heat pump air conditioning system. The problem of insufficient heating of the electric automobile is effectively compensated by recovering the rest heat.
The waste heat recovered by the waste heat is from heat generated by the motor and the electric control unit in the running process of the vehicle. The traditional waste heat recoverer is a stacked (or plate) heat exchanger, wherein one path is a cooling liquid (glycol solution) loop, and the other path is a refrigerant loop, wherein the waste heat recovery comes from the circulation of the cooling liquid loop. The working principle is as follows: the cooling liquid flows through the electric control and driving motor unit, absorbs the heat generated at the electric control and driving motor unit, and then passes through the waste heat recoverer, and the heat is transferred to the refrigerant loop by the cooling liquid. The cooled cooling liquid returns to the water inlet of the water pump through the electromagnetic three-way valve to complete one circulation.
A key link in the waste heat system is a heat exchange process of a refrigerant and a cooling liquid absorbing heat of the electric control unit and the driving motor, the process is equivalent to an evaporation process in a refrigeration cycle system, and the heat exchange process is used for improving the suction temperature of the refrigerant entering a compressor by the compressor and directly improving the heat exchange efficiency (COP) of the refrigerant.
The most important heat absorption process of a refrigerant in the waste heat recovery and utilization of the heat pump system is a throttling depressurization process, a thermostatic expansion valve (TXV) used in the traditional throttling depressurization process is generally small in the heat recovered by the waste heat of the heat pump air conditioning system, the heat recovered by the waste heat is basically below 1000W, and the waste heat recovery system is only used for heating circulation, so that the required regulation range is small, and the stroke range of the thermostatic expansion valve is small in use.
SUMMERY OF THE UTILITY MODEL
In view of this, an object of the present invention is to provide a waste heat recovery system using a throttling short tube to improve the winter heating performance of a heat pump air conditioning system, and reduce the cost of the heat pump air conditioning system, especially the cost of a waste heat recovery loop.
In order to achieve the above purpose, the utility model provides a following technical scheme:
a waste heat recovery system applying a throttling sleeve comprises a refrigerant loop, a cooling liquid loop, a battery cooling system loop and a cooling liquid loop of a heating cycle; the refrigerant loop comprises a compressor, a gas-liquid separator, a waste heat recovery loop and a water-cooled condenser which are connected in sequence, and the water-cooled condenser is connected back to the compressor; the waste heat recovery loop comprises a first stop valve and an electronic expansion valve which are connected in parallel, one end of the waste heat recovery loop is connected with the water-cooled condenser, the other end of the waste heat recovery loop is connected with the external condenser, and the waste heat recovery loop flows back to the water-cooled condenser through the waste heat recoverer and the throttling short pipe; and a heating, ventilating and air conditioning assembly and a battery cooler are respectively connected in parallel between the gas-liquid separator and the waste heat recovery loop.
Optionally, the cooling liquid loop is arranged inside the waste heat recovery loop and comprises a low-temperature radiator and an electronic fan which are arranged inside the external condenser, the low-temperature radiator and the electronic fan are respectively communicated with a second three-way water valve, the second three-way water valve is communicated with the waste heat recoverer and flows into a third water pump through a third three-way water valve, and the waste heat recoverer and the electronic fan flow back to the low-temperature radiator and the electronic fan through the driving motor and the inverter.
Optionally, a filling port is communicated with the second three-way water valve, and water is added into the filling port through a third water kettle.
Optionally, the water-cooled condenser is connected to a first three-way water valve through a high-voltage electric heating system, and the first three-way water valve is respectively communicated with the heating, ventilation and air conditioning assembly, the battery cooler and the high-voltage electric heating system.
Optionally, the battery cooler is communicated to the water-cooled condenser through a first water pump.
Optionally, a third stop valve and a third thermostatic expansion valve which are communicated with each other are connected in parallel between the gas-liquid separator and the waste heat recovery loop.
Optionally, a first temperature and pressure sensor and a fourth temperature and pressure sensor are respectively arranged on two sides of the compressor.
Optionally, a second temperature and pressure sensor is communicated between the water-cooled condenser and the waste heat recovery loop.
Optionally, the heating, ventilating and air conditioning assembly includes a heating core, an evaporator, and a fan, which are respectively connected in parallel, and a first thermal expansion valve is disposed at an end of the heating core, the evaporator, and the fan.
Optionally, the battery cooler is communicated with a fourth three-way water valve through the current pack and the second water pump and flows back to the battery cooler, and the fourth three-way water valve is respectively communicated with the second water pump, the battery cooler and the coolant loop.
Optionally, a first water kettle is connected between the first water pump and the battery cooler.
Optionally, the water heater further comprises a second water kettle connected between the electric current bag and the second water pump.
Optionally, the heating, ventilating and air conditioning assembly is communicated to the waste heat recovery circuit through a second stop valve.
Optionally, the system further comprises a third temperature and pressure sensor arranged between the waste heat recoverer and the external condenser.
The beneficial effects of the utility model reside in that:
the utility model provides an overall system reforms transform two by traditional fuel vehicle, and overall system is the same basically with traditional heat pump system theory of operation. However, the utility model discloses in parallelly connected one set of waste heat recovery return circuit, can be through the setting of throttle sleeve, reduce the cost of whole system under the prerequisite that guarantees the heat transfer volume and is equivalent basically. The heating performance of the heat pump air conditioner can be improved, the cruising ability of the whole vehicle is improved, and the heat pump air conditioner has certain industrial practical prospect.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.
Drawings
For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a schematic view of the overall structure of the present embodiment.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.
Referring to FIG. 1, the reference numbers in the drawings denote: a compressor 1, a gas-liquid separator 2, a battery cooler 3, a low-temperature radiator 4, an external condenser 5, an electronic fan 6, a fan 7, an evaporator 8, a warm air core 9, a water-cooled condenser 10, a first stop valve 11, a second stop valve 12, a third stop valve 13, a first three-way water valve 14, a second three-way water valve 15, a third three-way water valve 16, a fourth three-way water valve 17 and an electronic expansion valve 18, the device comprises a throttling short pipe 19, a first water kettle 20, a second water kettle 21, a current bag 22, a first temperature and pressure sensor 23, a second temperature and pressure sensor 24, a first water pump 25, a second water pump 26, a first thermal expansion valve 27, a high-voltage electric heating system 28, a third water kettle 29, an inverter 30, a driving motor 31, a third water pump 32, a third temperature and pressure sensor 33, a fourth temperature and pressure sensor 34, a second thermal expansion valve 35 and a waste heat recoverer 36.
The utility model relates to a waste heat recovery system applying a throttling short pipe 19, which comprises a refrigerant loop, a cooling liquid loop, a battery cooling system loop and a cooling liquid loop of heating circulation; the refrigerant loop comprises a compressor 1, a gas-liquid separator 2, a waste heat recovery loop and a water-cooled condenser 10 which are connected in sequence, wherein the water-cooled condenser 10 is connected back to the compressor 1; the waste heat recovery loop comprises a first stop valve 11 and an electronic expansion valve 18 which are connected in parallel, one end of the waste heat recovery loop is connected with the water-cooled condenser 10, the other end of the waste heat recovery loop is connected with the external condenser 5, and the waste heat recovery loop flows back to the water-cooled condenser 10 through a waste heat recoverer 36 and a throttling short pipe 19; and a heating, ventilating and air conditioning assembly and a battery cooler 3 are respectively connected in parallel between the gas-liquid separator 2 and the waste heat recovery loop.
Optionally, the cooling liquid loop is arranged inside the waste heat recovery loop, and includes a low-temperature radiator 4 and an electronic fan 6 which are arranged inside an external condenser 5, the low-temperature radiator 4 and the electronic fan 6 are respectively communicated with a second three-way water valve 15, the second three-way water valve 15 is communicated with a waste heat recoverer 36 and flows into a third water pump 32 through a third three-way water valve 16, and the waste heat flows back to the low-temperature radiator 4 and the electronic fan 6 through a driving motor 31 and an inverter 30; the second three-way water valve 15 is communicated with a filling opening, and water is added into the filling opening through a third water kettle 29.
Specifically, the water-cooled condenser 10 is connected to a first three-way water valve 14 through a high-voltage electric heating system 28, and the first three-way water valve 14 is respectively communicated with the heating, ventilating and air conditioning assembly, the battery cooler 3 and the high-voltage electric heating system 28; the battery cooler 3 is communicated to the water-cooled condenser 10 through a first water pump 25; a third stop valve 13 and a third thermal expansion valve which are communicated are also connected in parallel between the gas-liquid separator 2 and the waste heat recovery loop; a first temperature and pressure sensor 23 and a fourth temperature and pressure sensor 34 are respectively arranged at two sides of the compressor 1; a second temperature and pressure sensor 24 is communicated between the water-cooled condenser 10 and the waste heat recovery loop; the heating ventilation air-conditioning assembly comprises a heating air core body 9, an evaporator 8 and a fan 7 which are respectively connected in parallel, and the end part of the heating ventilation air-conditioning assembly is provided with a first thermal expansion valve 27; the battery cooler 3 is communicated with a fourth three-way water valve 17 through a current packet 22 and a second water pump 26 and flows back to the battery cooler 3, and the fourth three-way water valve 17 is respectively communicated with the second water pump 26, the battery cooler 3 and a cooling liquid loop; also comprises a first kettle 20 communicated between the first water pump 25 and the battery cooler 3; a second kettle 21 connected between the electric current bag 22 and the second water pump 26; the heating, ventilation and air conditioning assembly is communicated to a waste heat recovery loop through a second stop valve 12; and a third temperature and pressure sensor 33 arranged between the waste heat recoverer 36 and the external condenser 5.
The heating cycle working principle of the system is as follows: the second three-way water valve 15 can control the flow direction of the water path, when the second three-way water valve 15 is communicated with the electronic fan 6 to disconnect the low-temperature radiator 4, the cooling liquid loop does not pass through the low-temperature radiator 4, and all heat generated by the inverter 30 and the driving motor 31 unit enters the waste heat recoverer 36. In the waste heat recoverer 36, the refrigerant throttled and depressurized by the throttling short pipe 19 exchanges heat with the cooling liquid to heat the refrigerant, so that the suction temperature of the compressor 1 is increased, the exhaust temperature of the compressor 1 is further increased, and the heat exchange amount of the water-cooled condenser 10 is also increased.
When the second three-way water valve 15 is used for disconnecting the electronic fan 6 and communicating the low-temperature radiator 4, at the moment, heat generated by the inverter 30 and the driving motor 31 unit is taken away by the low-temperature radiator 4, the waste heat recoverer 36 does not work, heat of the motor and the electric control unit is exhausted into the air through the low-temperature radiator 4, and at the moment, the electronic fan 6 works.
The utility model discloses a coolant liquid return circuit need add third kettle 29, and the effect of third kettle 29 is that the temperature fluctuation leads to pressure variation too big in the pipeline in preventing the circulation system, sets up the filling of the convenient coolant liquid of filler on the third kettle 29. The utility model provides a waste heat recovery system opens the back, and system heating capacity winter is about 700W of maximum promotion.
The working principle of the throttle short pipe 19 is consistent with that of a thermostatic expansion valve, the thermostatic expansion valve can adjust the opening degree according to different system pressures, and the throttle short pipe 19 cannot be adjusted in opening degree, so that different throttle short pipes 19 need to be matched according to different systems.
According to the matching results of different systems, the improvement of the heat exchange capacity of the throttle short pipe 19 in the waste heat recovery loop is basically equivalent to that of a thermal expansion valve, and the heat exchange capacities are respectively as follows: 500- & lt600 & gtW. The cost of the throttle pipe 19 is only 10% of that of the thermostatic expansion valve, so that the heat exchange capacity of the system is basically equivalent by using the throttle pipe 19, and the cost of the whole system can be reduced.
Some parts in this application, such as the hvac assembly, the battery cooler 3, the first three-way water valve 14, the second thermal expansion valve 35, etc., can be assembled by using parts in the prior art, and in this embodiment, the relevant parts of the long-safety relief C211EV are borrowed.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an use waste heat recovery system of choke sleeve which characterized in that:
the system comprises a refrigerant loop, a cooling liquid loop, a battery cooling system loop and a cooling liquid loop of heating circulation;
the refrigerant loop comprises a compressor, a gas-liquid separator, a waste heat recovery loop and a water-cooled condenser which are connected in sequence, and the water-cooled condenser is connected back to the compressor;
the waste heat recovery loop comprises a first stop valve and an electronic expansion valve which are connected in parallel, one end of the waste heat recovery loop is connected with the water-cooled condenser, the other end of the waste heat recovery loop is connected with the external condenser, and the waste heat recovery loop flows back to the water-cooled condenser through the waste heat recoverer and the throttling short pipe;
and a heating, ventilating and air conditioning assembly and a battery cooler are respectively connected in parallel between the gas-liquid separator and the waste heat recovery loop.
2. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: the cooling liquid loop is arranged inside the waste heat recovery loop and comprises a low-temperature radiator and an electronic fan which are arranged inside the external condenser, the low-temperature radiator and the electronic fan are respectively communicated with a second three-way water valve, the second three-way water valve is communicated with the waste heat recoverer and flows into a third water pump through a third three-way water valve, and the waste heat is returned to the low-temperature radiator and the electronic fan through the driving motor and the inverter.
3. The waste heat recovery system using a choke stub as claimed in claim 2, wherein: the second three-way water valve is communicated with a filling port, and water is added into the filling port through a third kettle.
4. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: the water-cooled condenser is connected to a first three-way water valve through a high-voltage electric heating system, and the first three-way water valve is respectively communicated with the heating ventilation air-conditioning assembly, the battery cooler and the high-voltage electric heating system.
5. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: the battery cooler is communicated to the water-cooled condenser through a first water pump.
6. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: and a third stop valve and a third thermostatic expansion valve which are communicated are also connected in parallel between the gas-liquid separator and the waste heat recovery loop.
7. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: and a first temperature and pressure sensor and a fourth temperature and pressure sensor are respectively arranged on two sides of the compressor.
8. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: and a second temperature and pressure sensor is communicated between the water-cooled condenser and the waste heat recovery loop.
9. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: the heating ventilation air-conditioning assembly comprises a heating core body, an evaporator and a fan which are respectively connected in parallel, and a first thermal expansion valve is arranged at the end part of the heating ventilation air-conditioning assembly.
10. The waste heat recovery system using a choke stub as claimed in claim 1, wherein: the battery cooler is communicated to a fourth three-way water valve through the current pack and the second water pump and flows back to the battery cooler, and the fourth three-way water valve is respectively communicated with the second water pump, the battery cooler and the cooling liquid loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181708.6U CN210425664U (en) | 2019-07-25 | 2019-07-25 | Waste heat recovery system using throttling sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921181708.6U CN210425664U (en) | 2019-07-25 | 2019-07-25 | Waste heat recovery system using throttling sleeve |
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| Publication Number | Publication Date |
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| CN210425664U true CN210425664U (en) | 2020-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921181708.6U Active CN210425664U (en) | 2019-07-25 | 2019-07-25 | Waste heat recovery system using throttling sleeve |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716993A (en) * | 2020-06-23 | 2020-09-29 | 重庆长安新能源汽车科技有限公司 | Low-energy-consumption heat management system |
| CN114216284A (en) * | 2021-11-29 | 2022-03-22 | 青岛海尔空调器有限总公司 | Control method of temperature management system of vehicle and temperature management system |
-
2019
- 2019-07-25 CN CN201921181708.6U patent/CN210425664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111716993A (en) * | 2020-06-23 | 2020-09-29 | 重庆长安新能源汽车科技有限公司 | Low-energy-consumption heat management system |
| CN114216284A (en) * | 2021-11-29 | 2022-03-22 | 青岛海尔空调器有限总公司 | Control method of temperature management system of vehicle and temperature management system |
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