CN113619349A - Vehicle warm air system and engine cooling system - Google Patents
Vehicle warm air system and engine cooling system Download PDFInfo
- Publication number
- CN113619349A CN113619349A CN202010381629.0A CN202010381629A CN113619349A CN 113619349 A CN113619349 A CN 113619349A CN 202010381629 A CN202010381629 A CN 202010381629A CN 113619349 A CN113619349 A CN 113619349A
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- China
- Prior art keywords
- warm air
- main body
- branch
- engine
- heat recovery
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- B60H1/00321—Heat exchangers for air-conditioning devices
- B60H1/00328—Heat exchangers for air-conditioning devices of the liquid-air type
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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
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
- B60H1/039—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from air leaving the interior of the vehicle, i.e. heat recovery
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/20—Cooling circuits not specific to a single part of engine or machine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a vehicle warm air system and an engine cooling system, wherein the warm air system comprises a warm air component and a heat recovery component, the heat recovery component is arranged at the upstream of the warm air component, and a main body of the heat recovery component is at least formed by a heat-conducting material facing one side of an exhaust manifold of an engine; when the warm air system works, the medium in the main body can exchange heat with the high-temperature waste gas in the exhaust manifold, the heat in the high-temperature waste gas is partially absorbed by the medium in the main body, the medium in the main body is heated to be raised in temperature, and the medium with the raised temperature in the main body flows into the warm air component, so that the purpose of improving the warm air performance is achieved; and the body of the heat recovery member provided in the present invention may form a heat shield for an engine exhaust manifold.
Description
Technical Field
The invention relates to the technical field of vehicle warm air systems, in particular to a vehicle warm air system and an engine cooling system.
Background
At present, there are two main methods for improving the warm air performance of a diesel vehicle, one of which is a PTC (ceramic electric heating element) scheme, and air is blown by a fan to flow through the PTC electric heating element for forced convection, so that the purpose of improving the warm air temperature of the vehicle is achieved by using the scheme as a main heat exchange mode.
In addition, a parking heater is generally additionally arranged for improving the warm air performance of the diesel vehicle in a low-temperature environment, and on the basis of the original warm air of the vehicle, a set of independent fuel pipeline, a circuit, a combustion heating device, a control device and the like are additionally arranged, so that the preheating and the temperature rising of air entering a cab are realized, and meanwhile, the heating of air inlet of the engine in the low-temperature environment can be realized.
The two solutions described above have mainly the following drawbacks: the PTC power is limited, and when the ambient temperature is lower than-15 ℃, the energy requirement of warm air cannot be met; the parking heater is with high costs (the transformation expense of single whole car is about more than 5000 yuan), because additionally increase a set of fuel oil pipe, the security is poor.
Therefore, how to improve the warm air performance and reduce the use cost is a continuous objective pursued by those skilled in the art.
Disclosure of Invention
The vehicle warm air system provided by the invention has the advantages of high warm air performance and low use cost.
The vehicle warm air system comprises a warm air component and a heat recovery component, wherein the heat recovery component is arranged at the upstream of the warm air component, and the heat recovery component and the warm air component are connected in series with a warm air branch of an engine coolant loop; the heat recovery component comprises a main body with a cavity, the outer surface of the main body is further provided with an inlet and an outlet which are communicated with the cavity, the inlet is communicated with an outlet pipe of the engine cooling liquid, the main body is arranged near an engine exhaust manifold, and at least one side surface of the main body facing the engine exhaust manifold is formed by a heat-conducting material.
When the warm air system works, the cooling liquid flowing out of the engine firstly enters the cavity of the heat recovery component, the main body is arranged near the exhaust manifold of the engine, and at least one side of the main body facing the exhaust manifold of the engine is formed by the heat conducting material, so that the medium in the main body can exchange heat with the high-temperature exhaust gas in the exhaust manifold, the heat in the high-temperature exhaust gas is partially absorbed by the medium in the main body, the medium in the main body is heated to be increased in temperature, and the medium with the increased temperature in the main body flows into the warm air component again, so that the purpose of improving the warm air performance is achieved.
The body of the heat recovery member provided in the present invention may form a heat shield for an engine exhaust manifold. That is, the heat recovery member provided herein can function as a heat shield without installing a heat shield as in the prior art around the exhaust manifold of the engine in the present invention, and can also achieve recovery of gas energy inside the exhaust manifold.
Optionally, the body forms a heat shield for the engine exhaust manifold.
Optionally, the main body is a flat plate structure, and the flat plate structure is mounted above the engine exhaust manifold.
Optionally, the main body is provided with a bolt mounting hole, the bolt mounting hole and the cavity are arranged relatively independently, a bolt is arranged in the bolt mounting hole, and the main body is fixed to the engine exhaust manifold through the bolt.
Optionally, the body is disposed around the engine exhaust manifold.
Optionally, the body is a metal material.
Optionally, the heat recovery device further comprises a flow control valve for controlling the flow of the medium flowing through the heat recovery component so that the temperature of the engine coolant after flowing through the cavity is in a preset temperature range.
In addition, the invention also provides an engine cooling system, which comprises the vehicle warm air system and a small circulation branch which is connected with the warm air branch in parallel, wherein when the temperature of the engine coolant is lower than the preset temperature, the engine coolant simultaneously flows through the vehicle warm air system and the small circulation branch;
the flow control valve is used for controlling the flow of the medium flowing through the heat recovery component so that the temperature of the engine cooling liquid is in a preset temperature range after the engine cooling liquid flows through the cavity.
Optionally, the flow control valve is disposed in the small circulation branch;
or the warm air branch and the small circulation branch are both provided with the flow control valve.
Optionally, still include the radiator branch road, with the warm braw branch road that vehicle warm braw system located the microcirculation branch road is parallelly connected simultaneously, the pipe diameter of warm braw branch road with the pipe diameter of microcirculation branch road all is less than the pipe diameter of radiator branch road the radiator branch road is provided with radiator and temperature saver, works as engine coolant temperature is greater than when predetermineeing the temperature, the temperature saver is in the connected state, otherwise, the temperature saver is in the closed condition.
Since the engine cooling system of the present invention includes any one of the vehicle warm air systems described above, the engine cooling system also has the above-described technical effects of the vehicle warm air system.
Drawings
FIG. 1 is a schematic diagram of a vehicle heater system according to an embodiment of the present invention;
FIG. 2 is another angled three-dimensional view of the vehicle heater system of FIG. 1;
FIG. 3 is a schematic diagram of an engine cooling system in an embodiment of the present invention.
Wherein the one-to-one correspondence between reference numbers and components in fig. 1-3 is as follows:
1-engine, 2-radiator, 3-flow control valve, 4-heat recovery part, 4 a-bolt, 41-body; 42-an inlet; 43-an outlet; 5-an exhaust manifold, 6-a warm air component, 7-a thermostat and 8-a water pump;
9-a supercharger.
Detailed Description
In order to solve the technical problems of poor service performance, high use cost and safety of a parking heater of the PTC heater, the PTC heater is deeply researched and provides a specific solution.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a vehicle heater system according to an embodiment of the present invention; FIG. 2 is another angled three-dimensional view of the vehicle heater system of FIG. 1;
FIG. 3 is a schematic diagram of an engine cooling system in an embodiment of the present invention.
The invention provides an engine cooling system which comprises an engine 1, a warm air branch, a small circulation branch and a radiator branch, wherein the engine 1, the warm air branch, the small circulation branch and the radiator branch are connected in parallel between a main pipe of a cooling liquid outlet and a main pipe of a cooling liquid inlet of the engine.
In one embodiment of the invention, a flow control valve 3 is arranged on the small circulation branch. The radiator branch road is provided with a radiator 2, and the vehicle warm air branch road is provided with a warm air component 6. The pipe diameter of the radiator branch is usually larger than the pipe diameters of the small circulation branch and the vehicle warm air branch, accordingly, the resistance of the radiator branch is relatively small, and when the radiator branch is communicated, most of cooling liquid passes through the radiator branch.
A thermostat 7 can be installed on the radiator branch, when the temperature of the engine coolant is lower than a preset temperature (the starting temperature of the thermostat 7), the thermostat 7 is in a closed state, at the moment, the engine coolant does not flow through the radiator 2 and flows to a water pump 8 through a flow control valve 3, and at the moment, the coolant circulation mode is small circulation; correspondingly, when the water temperature is higher than the set value, the thermostat 7 is in an open state, and most of the coolant flows to the water pump through the radiator 2.
The vehicle warm air system further comprises a warm air component 6 and a heat recovery component 4, wherein the heat recovery component 4 is arranged at the upstream of the warm air component 6 and is connected in series with a warm air branch of the engine coolant circuit. That is, the engine coolant flows through the heat recovery part 4 first and then flows into the warm air part 6.
The heat recovery part 4 of the present invention comprises a main body 41 having a cavity, wherein the outer surface of the main body 41 is further provided with an inlet 42 and an outlet 43 which are communicated with the cavity, the inlet 42 is communicated with an outlet pipe of engine coolant, the main body 41 is arranged near an engine exhaust manifold 5, and at least one side surface of the main body 41 facing the engine exhaust manifold 5 is formed by a heat-conducting material.
When the warm air system works, the cooling liquid flowing out of the engine firstly enters the cavity of the heat recovery part 4, the main body 41 is arranged near the engine exhaust manifold 5, and the main body 41 is at least formed by a heat-conducting material facing one side of the engine exhaust manifold 5, so that the medium in the main body can exchange heat with the high-temperature waste gas in the exhaust manifold 5, the heat in the high-temperature waste gas is partially absorbed by the medium in the main body, the medium in the main body 41 is heated to be increased in temperature, and the medium with the increased temperature in the main body 41 flows into the warm air part 6 again, so that the purpose of improving the warm air performance is achieved.
The body 41 of the heat recovery member 4 provided in the present invention may form a heat shield of the engine exhaust manifold 5. That is, the heat recovery member 4 provided herein can function as a heat shield without installing a heat shield as in the prior art around the exhaust manifold 5 of the engine in the present invention, and can also achieve recovery of gas energy inside the exhaust manifold 5.
In one embodiment, the body may be a flat plate structure that is mounted above the engine exhaust manifold 5. The structure of the heat recovery part 4 is designed for a specific vehicle type, and the structure is simple and easy to implement on the premise of meeting the use requirement.
Of course, the structure of the heat recovery member 4 is not limited to the structure described herein, and may be configured appropriately according to the specific application environment and requirements.
In the above embodiments, the main body 41 may be provided with a bolt mounting hole, the bolt mounting hole and the cavity are relatively independently arranged, a bolt 4a is arranged in the bolt mounting hole, and the main body is fixed to the engine exhaust manifold 5 through the bolt. That is, the arrangement of the bolt mounting hole does not affect the sealing performance of the inner cavity.
In the above embodiment, the fixing manner of the main body 41 is simple and the occupied space is small.
Of course, for an application environment where the space around the exhaust manifold 5 is sufficient and the temperature required for warm air is high, the main body may be provided around the engine exhaust manifold 5. For example, the body surrounds the engine exhaust manifold 5 to increase the contact area therebetween, increasing the amount of heat exchange.
In the above embodiments, the vehicle heating system may further include a control valve, which may be the flow control valve 3 described above, for controlling the medium flow of the heat recovery part 4 so that the temperature of the engine coolant flowing through the cavity is within a predetermined temperature range.
The flow control valve 3 can improve the control precision of the warm air temperature, so that the exhaust energy recovery can be controlled.
The flow control valve 3 may be an electronically controlled valve, a hydraulically controlled valve, or a manually controlled valve.
The flow control valve 3 may be only provided in the small circulation branch, and the flow of the warm air branch is controlled by controlling the flow of the coolant in the small circulation branch. Of course, the warm air branch and the small circulation branch may be provided with flow control valves.
The working principle of the vehicle warm air branch, the small circulation branch and the radiator branch is approximately as follows: when the temperature of the engine coolant is lower than the preset temperature, the engine coolant flows through the warm air branch and the small circulation branch simultaneously.
As described above, the radiator branch is provided with the radiator 2 and the thermostat 7, and when the engine coolant temperature is greater than the preset temperature, the thermostat 7 is in a communicated state, otherwise, the thermostat 7 is in a closed state.
For other structures of the engine cooling system, please refer to the prior art, which is not described herein.
Still install booster 9 on the general vehicle, in order to make things convenient for the installation of each part, still be provided with in the main part and dodge the recess to dodge parts such as increaser 9.
In addition, a water pump 8 can be installed in the engine cooling system and used for providing medium flowing power. The water pump 8 may be installed at an inlet position of the engine 1.
Since the engine cooling system of the present invention includes the vehicle warm air system, the engine cooling system also has the technical effects of the vehicle warm air system.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.
Claims (10)
1. A vehicle warm air system comprising a warm air component, characterized by further comprising a heat recovery component (4), wherein the heat recovery component (4) is disposed upstream of the warm air component, and the heat recovery component (4) and the warm air component are connected in series in a warm air branch of an engine coolant circuit; the heat recovery component (4) comprises a main body (41) with a cavity, the outer surface of the main body (41) is further provided with an inlet (42) and an outlet (43) which are communicated with the cavity, the inlet (42) is communicated with an outlet pipe of the engine cooling liquid, the main body (41) is arranged near an engine exhaust manifold (5), and at least one side surface of the main body (41) facing the engine exhaust manifold (5) is formed by a heat-conducting material.
2. The vehicle heating system according to claim 1, wherein the main body (41) forms a heat shield of the engine exhaust manifold (5).
3. The vehicle heater system according to claim 1, wherein the main body (41) is a flat plate structure that is mounted above the engine exhaust manifold (5).
4. The vehicle heating system according to claim 1, wherein the main body (41) is provided with a bolt mounting hole which is provided independently from the cavity, and a bolt (4a) is provided inside the bolt mounting hole, and the main body is fixed to the engine exhaust manifold by the bolt (4 a).
5. The vehicle heating system according to claim 1, wherein the main body (41) is disposed around the engine exhaust manifold (5).
6. The vehicle heating system according to claim 1, wherein the main body (41) is a metal material.
7. The vehicle heater system according to any one of claims 1 to 6, further comprising a flow control valve (3) for controlling the flow of the medium flowing through the heat recovery member (4) so that the temperature of the engine coolant after flowing through the cavity is in a predetermined temperature range.
8. An engine cooling system, comprising the vehicle warm air system of any one of claims 1 to 6, and further comprising a small circulation branch connected in parallel with the warm air branch, the engine coolant flowing through the vehicle warm air system and the small circulation branch simultaneously when an engine coolant temperature is lower than a preset temperature;
the heat recovery device also comprises a flow control valve (3) for controlling the flow of the medium flowing through the heat recovery part (4) so that the temperature of the engine cooling liquid is in a preset temperature range after flowing through the cavity.
9. Engine cooling system according to claim 8, characterised in that the flow control valve (3) is arranged in the small circulation branch;
or the warm air branch and the small circulation branch are both provided with the flow control valve (3).
10. The engine cooling system according to claim 8, further comprising a radiator branch, which is connected in parallel with the warm air branch and the small circulation branch, wherein a pipe diameter of the warm air branch and a pipe diameter of the small circulation branch are both smaller than a pipe diameter of the radiator branch, the radiator branch is provided with a radiator and a thermostat, the thermostat is in a communication state when the temperature of the engine coolant is greater than the preset temperature, and otherwise, the thermostat is in a closing state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381629.0A CN113619349A (en) | 2020-05-08 | 2020-05-08 | Vehicle warm air system and engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010381629.0A CN113619349A (en) | 2020-05-08 | 2020-05-08 | Vehicle warm air system and engine cooling system |
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| Publication Number | Publication Date |
|---|---|
| CN113619349A true CN113619349A (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010381629.0A Pending CN113619349A (en) | 2020-05-08 | 2020-05-08 | Vehicle warm air system and engine cooling system |
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| CN (1) | CN113619349A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115176581A (en) * | 2022-08-08 | 2022-10-14 | 江苏大学 | Hot air cleaning device and heat dissipation prevention system for rice and wheat oil combine harvester |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115176581A (en) * | 2022-08-08 | 2022-10-14 | 江苏大学 | Hot air cleaning device and heat dissipation prevention system for rice and wheat oil combine harvester |
| CN115176581B (en) * | 2022-08-08 | 2023-12-01 | 江苏大学 | Hot air cleaning device and heat radiation prevention system for rice and wheat oil combine harvester |
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Application publication date: 20211109 |