CN219711652U - Thermostat and cooling system - Google Patents
Thermostat and cooling system Download PDFInfo
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- CN219711652U CN219711652U CN202320551251.3U CN202320551251U CN219711652U CN 219711652 U CN219711652 U CN 219711652U CN 202320551251 U CN202320551251 U CN 202320551251U CN 219711652 U CN219711652 U CN 219711652U
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- 238000001816 cooling Methods 0.000 title claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 64
- 239000002826 coolant Substances 0.000 claims abstract description 12
- 238000004891 communication Methods 0.000 claims description 4
- 230000004044 response Effects 0.000 abstract description 7
- 230000008859 change Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 4
- 239000000110 cooling liquid Substances 0.000 description 21
- 238000007789 sealing Methods 0.000 description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model provides a thermostat and a cooling system; the utility model relates to a cooling system field, including the base member, case and driving piece, be equipped with the feed liquor runner in the base member, first play liquid runner and second play liquid runner, first play liquid runner passes through first opening intercommunication feed liquor runner, second play liquid runner passes through the second opening intercommunication feed liquor runner, first opening, case and second opening coaxial arrangement, the case can cooperate first opening or second opening, the case passes through the valve rod and connects the driving piece, the driving piece drives the case and moves in order to adjust first opening's aperture or second opening's aperture along its axial direction, be difficult to the problem of meeting the demand to present thermostat response speed and aperture regulation precision, adopt the driving piece initiative to drive the case, drive case adjustment position in order to change case and first opening, second opening's relative position, control engine coolant circulation process, improve the control speed and the aperture regulation precision to the thermostat, satisfy the demand of engine under the different operational environment.
Description
Technical Field
The utility model relates to the field of cooling systems, in particular to a thermostat and a cooling system.
Background
When the engine is matched with the whole vehicle or in the bench test process, the thermal balance state of the engine is unstable along with different operation conditions, so that the thermostat is generally adopted to maintain the cooling circulation system of the engine to control the operation state of the engine in order to ensure that the engine is always in a high-efficiency and safe operation state. At present, most of the thermostats are wax thermostats, paraffin is in a solid state at normal temperature, and according to the change of the liquid outlet temperature of an engine, the opening degree of a valve of the thermostat is controlled through the change of the paraffin state, so that the purpose of controlling the circulation of the size of a cooling system of the engine is achieved.
However, the response speed of the wax type thermostat is slower, the inlet and outlet temperatures of the engine can not be accurately and rapidly controlled, and particularly when the engine runs in some special working environments, the thermostat is required to rapidly respond, so that the running state of the engine can be rapidly adjusted, the oil consumption and the emission of the engine are optimized, the current thermostat is difficult to meet the use requirement, and the opening adjustment and the response speed of the thermostat are difficult to meet the requirement.
Disclosure of Invention
The utility model aims at overcoming the defects in the prior art, and provides a thermostat and a cooling system, wherein a driving piece is adopted to actively drive a valve core, so as to drive the valve core to adjust the position to change the relative positions of the valve core, a first opening and a second opening, control the circulation process of engine cooling liquid, improve the control speed and the opening adjustment precision of the thermostat, and meet the requirements of engines under different working environments.
The first object of the utility model is to provide a thermostat, which adopts the following technical scheme:
including base member, case and driving piece, be equipped with feed liquor runner, first play liquid runner and second play liquid runner in the base member, first play liquid runner passes through first opening intercommunication feed liquor runner, second play liquid runner passes through the second opening intercommunication feed liquor runner, first opening, case and second opening coaxial arrangement, case can cooperate first opening or second opening, the case passes through the valve rod and connects the driving piece, the driving piece drives the case and moves in order to adjust the aperture of first opening or the aperture of second opening along its axial direction.
Further, one end of the valve rod is connected with the end face of the valve core, the other end of the valve rod penetrates through the first liquid outlet channel and then extends out of the base body, and the driving piece is matched with a section of the valve rod located outside the base body.
Further, a rack is arranged on a section, outside the base body, of the valve rod, the driving piece is a driving motor, and the output end of the driving motor is connected with a gear meshed with the rack.
Further, the valve core is of a disc-shaped structure, and the cross section shape of the valve core along the direction perpendicular to the axis is matched with the first opening and the second opening.
Further, the valve core and the valve rod are coaxially arranged, and the outer edge of the valve core is of a smooth structure.
Further, the base body is provided with a mounting hole for the valve rod to pass through, a sealing element is matched in the mounting hole, and the valve rod is in sliding fit with the mounting hole through the sealing element.
Further, the sealing piece comprises a plurality of sealing rings, annular grooves corresponding to the sealing rings one by one are arranged in the mounting holes, the sealing rings are embedded into the annular grooves, and the inner ring of the sealing rings is attached to the valve rod.
Further, the first opening and the second opening are symmetrically arranged relative to the axis of the liquid inlet flow channel, the first opening and the second opening are both communicated with the side face of the tail end of the liquid inlet flow channel, the axis of the first opening is perpendicular to the axis of the liquid inlet flow channel at the communicated position, the first opening is located on one side of the axis of the first liquid outlet flow channel, and the second opening is located at one end of the axis of the second liquid outlet flow channel.
Further, the engine cooling device also comprises a controller and a temperature sensor, wherein the temperature sensor is arranged at the engine cooling liquid outlet and is used for measuring temperature information of the engine cooling liquid and sending the temperature information to the controller, and the controller is used for controlling the action of the driving piece so as to adjust the position of the valve core.
A second object of the present utility model is to provide a cooling system equipped with a thermostat as described in the first object.
Compared with the prior art, the utility model has the advantages and positive effects that:
(1) Aiming at the problem that the response speed and the opening degree adjusting precision of the prior thermostat are difficult to meet the requirements, a driving piece is adopted to actively drive a valve core, the valve core is driven to adjust the position so as to change the relative positions of the valve core, a first opening and a second opening, the circulation process of engine cooling liquid is controlled, the control speed and the opening degree adjusting precision of the thermostat are improved, and the requirements of engines under different working environments are met.
(2) Based on the temperature of the coolant outlet of the engine as the input quantity of closed-loop control, the temperature value is accurately judged in real time, so that the purpose of accurately and rapidly controlling the valve opening of the thermostat is realized.
(3) The engine control method has the advantages of quick response, accurate control and the like, can ensure that the engine runs in a safe heat balance state, can quickly and effectively respond to sudden working conditions, can realize long-term running of the engine in the optimized heat balance state, and achieves the aim of optimizing the economy and emission of the engine.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
Fig. 1 is a schematic view of a thermostat in embodiment 1 of the present utility model.
Fig. 2 is a schematic view of the valve core of embodiment 1 of the present utility model after adjusting the position.
Fig. 3 is a schematic view of the valve core of embodiment 1 of the present utility model after adjusting the position.
In the figure: 1. the driving motor, 2, the sealing piece, 3, the liquid inlet flow channel, 4, the second liquid outlet flow channel, 5, the first liquid outlet flow channel, 6, the valve core, 7, the valve rod and 8, the base member.
Detailed Description
Example 1
In an exemplary embodiment of the present utility model, as shown in fig. 1-3, a thermostat is provided.
The thermostat is a valve for controlling the flow path of the coolant, and opens or closes a passage of the coolant to the radiator according to the temperature of the coolant. The existing thermostat controls the opening degree of a valve by means of the physical characteristics of paraffin, and the purpose of adjusting the water inlet and outlet temperature of an engine is achieved, so that the thermostat has the problems of slow response and inaccurate control.
Based on this, in this embodiment, a thermostat is provided, in which the driving member is combined with the valve core 6 to actively adjust the flow direction of the cooling liquid flow channel in the thermostat, so that the liquid inlet flow channel 3 is communicated with the first liquid outlet flow channel 5, or the liquid inlet flow channel 3 is communicated with the second liquid outlet flow channel 4, and the active action of the driving member is utilized to realize rapid and accurate adjustment of the position of the valve core 6, thereby improving the control speed of the thermostat and improving the accuracy of adjusting the opening in the thermostat.
The above thermostat will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the thermostat comprises a base body 8, a valve core 6, a valve rod 7 and a driving piece, wherein a flow passage for cooling liquid to flow is arranged in the base body 8, and the flow path of the cooling liquid is adjusted according to the cooling requirements of the engine in different running states, so that the engine is in a required temperature state, and the oil consumption and the emission of the engine are optimized. The matrix 8 is internally provided with a liquid inlet channel 3 and a liquid outlet channel which are communicated with each other, two liquid outlet channels are arranged, one liquid outlet channel is a first liquid outlet channel 5, and the first liquid outlet channel 5 is connected with an external radiator for large circulation; the other is a second liquid outlet flow passage 4, and the second liquid outlet flow passage 4 is connected into a cooling cavity of the engine to perform small circulation in the engine. The valve core 6 is arranged in the matrix 8, the driving piece is connected with the valve core 6 through the valve rod 7, and the valve core 6 can change the communication relation between the liquid inlet channel 3, the first liquid outlet channel 5 and the second liquid outlet channel 4 through action, so that the circulation state of engine cooling liquid is changed.
One of the main components of the thermostat is a driving piece, the driving piece can be a driving motor 1, the driving motor 1 can receive a control signal from a controller, and the valve rod 7 is driven to drive the valve core 6 to act, so that the purpose of controlling the circulation of engine cooling liquid is achieved. The controller in the present embodiment may employ an engine control system (ECU).
The first liquid outlet flow channel 5 is communicated with the liquid inlet flow channel 3 through a first opening, the second liquid outlet flow channel 4 is communicated with the liquid inlet flow channel 3 through a second opening, the first opening, the valve core 6 and the second opening are coaxially arranged, the valve core 6 can be matched with the first opening or the second opening, the valve core 6 is connected with a driving piece through a valve rod 7, and the driving piece drives the valve core 6 to axially move along the driving piece so as to adjust the opening of the first opening or the opening of the second opening.
The valve element 6 serves as a core portion for adjusting the flow direction of the coolant, and can control the switching between the large circulation and the small circulation of the engine coolant. The engine cooling liquid flows into the matrix 8 from the liquid inlet channel 3, and under the condition that the small circulation can meet the cooling requirement of the engine, the position of the valve core 6 is adjusted to enable the valve core to block the first opening, and the cooling liquid flows into the second liquid outlet channel 4 from the liquid inlet channel 3 and returns to the engine for small circulation, as shown in fig. 2.
When the small circulation cannot meet the cooling requirement, the valve core 6 is adjusted to block the second opening, the cooling liquid flows into the first liquid outlet channel 5 from the liquid inlet channel 3, is conveyed to an external element through the first liquid outlet channel 5 and then returns to the engine for large circulation, as shown in fig. 3.
The valve element 6 is operated to adjust the opening degrees of the first opening and the second opening, not only the first opening or the second opening is blocked, but also the distance between the valve element 6 and the first opening and the distance between the valve element 6 and the second opening are changed. When the valve element 6 is in a state of not matching the first opening and the second opening, the clearance between the valve element 6 and the opening determines the flow area of the cooling liquid into the opening, namely the effective opening of the opening for the cooling liquid to enter, so the opening of the first opening and the second opening can be changed by adjusting the position of the valve element 6, and the speed of the cooling liquid entering the opening is changed.
The engine cooling device further comprises a controller and a temperature sensor, wherein the temperature sensor is arranged at an engine cooling liquid outlet and is used for measuring temperature information of engine cooling liquid and sending the temperature information to the controller, and the controller is used for controlling the action of the driving piece so as to adjust the position of the valve core 6.
Specifically, according to the feedback signal of the engine coolant outlet water temperature sensor and the engine rotating speed signal as inputs, the purpose of controlling the outlet water temperature of the engine under different operation conditions is achieved by calibrating the opening formed between the valve core 6 and the opening. And meanwhile, the actual position control of the valve core 6 is realized under special environments such as a plateau or a hot zone by correcting the atmospheric temperature and the atmospheric pressure.
Based on the temperature of the coolant outlet of the engine as PID closed-loop control input quantity, the purpose of accurately and rapidly controlling the opening of a channel formed between the valve core 6 and the opening of the thermostat is realized through real-time accurate judgment of the temperature value. Meanwhile, according to the specific engine model, the control and maintenance of the optimal cooling liquid water outlet temperature under different operation conditions can be realized, and the purposes of optimizing the comprehensive specific fuel consumption and emission are realized.
The thermostat has the advantages of quick response, accurate control and the like, can ensure that the engine runs in a safe heat balance state, and can also quickly and effectively respond to sudden working conditions. Meanwhile, based on the calibration and PID control of the outlet water temperature to the position of the valve core 6, the long-term operation of the engine in the optimal heat balance state can be realized, and the purposes of optimizing the economy and emission of the engine are achieved.
For the connection of the valve rod 7, the base body 8 and the valve core 6, one end of the valve rod 7 is connected with the end face of the valve core 6, the other end of the valve rod passes through the first liquid outlet flow passage 5 and then extends out of the base body 8, and the driving piece is matched with a section of the valve rod 7 located outside the base body 8. In this embodiment, the driving member is located at a side of the outer portion of the base 8, which is close to the first liquid outlet channel 5, and in other embodiments, the arrangement position of the driving member may be changed, and after the position of the driving member is changed, the position of the corresponding valve rod 7 needs to be adjusted, so that the valve rod 7 extends to the position of the driving member and is driven in cooperation with the driving member.
The section of the valve rod 7 outside the base body 8 is provided with a rack, the driving piece is a driving motor 1, and the output end of the driving motor 1 is connected with a gear meshed with the rack. In the present embodiment, a rack-and-pinion mechanism is used as a transmission mechanism between the driver and the valve stem 7. In other embodiments, a worm and gear mechanism, a screw slider mechanism, etc. may be used as a transmission mechanism to realize power transmission between the driving member and the valve rod 7, and the valve rod 7 is driven to act to drive the valve core 6 to adjust the position.
As shown in fig. 1 and 2, the valve core 6 has a disc structure, the cross section shape of the valve core 6 along the direction perpendicular to the axis is adapted to the first opening and the second opening, when the valve core 6 moves to the first opening position, the valve core 6 can cooperate with the first opening and block the first opening, so as to block the communication between the liquid inlet flow channel 3 and the first liquid outlet flow channel 5; when the valve core 6 moves to the second opening position, the valve core can be matched with the second opening and plug the second opening, so that the communication between the liquid inlet flow channel 3 and the second liquid outlet flow channel 4 is blocked.
The valve core 6 and the valve rod 7 are coaxially arranged, the outer edge of the valve core 6 is of a smooth structure, when the valve core 6 is matched with the first opening and the second opening, good lamination can be realized, the sealing performance is improved, and the leakage problem caused by the protruding ridge line position is avoided.
The base body 8 is provided with a mounting hole for the valve rod 7 to pass through, the size and the specification of the mounting hole are matched with those of the valve rod 7, the sealing piece 2 is matched in the mounting hole, the valve rod 7 is in sliding fit with the mounting hole through the sealing piece 2, and meanwhile, the joint sealing of the valve rod 7 is kept while the sliding fit is carried out, so that the cooling liquid in the first liquid outlet flow channel 5 is blocked from leaking outwards through the mounting hole.
In the reworking of the embodiment, the sealing element 2 comprises a plurality of sealing rings, annular grooves corresponding to the sealing rings one by one are arranged in the mounting holes, the sealing rings are embedded into the annular grooves, the inner ring of each sealing ring is attached to the valve rod 7, the position of each sealing ring is restrained by the annular grooves, and when the valve rod 7 slides relative to the mounting holes, the sealing rings are kept fixed relative to the base body 8.
For the configuration of the cooling liquid flow channel in the matrix 8, the first opening and the second opening are symmetrically arranged relative to the axis of the liquid inlet flow channel 3, the first opening and the second opening are both communicated with the side face of the tail end of the liquid inlet flow channel 3, the axis of the first opening is perpendicular to the axis of the liquid inlet flow channel 3 at the communicated position, the first opening is positioned at one side of the axis of the first liquid outlet flow channel 5, and the second opening is positioned at one end of the axis of the second liquid outlet flow channel 4.
Example 2
In another exemplary embodiment of the present utility model, a cooling system is provided.
The cooling system in this embodiment uses a thermostat as in embodiment 1.
Installing a thermostat on a cooling system, and referring to the above embodiment 1, connecting a first liquid outlet channel 5 with a radiator of the cooling system, radiating the coolant output in the first liquid outlet channel 5 through the radiator, and then flowing back to an engine through a water pump for large circulation; and the second liquid outlet flow passage 4 is connected with a water pump of the cooling system, and the cooling liquid output in the second liquid outlet flow passage is returned to the engine through the water pump to carry out small circulation in the engine. Since the thermostat as in example 1 is installed on the cooling system, the advantageous effects of the thermostat are described in example 1 and will not be described in detail.
For other structures in the cooling system that are not mentioned, existing structures may be employed.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a thermostat, a serial communication port, including the base member, case and driving piece, be equipped with feed liquor runner in the base member, first play liquid runner and second play liquid runner, first play liquid runner passes through first opening intercommunication feed liquor runner, second play liquid runner passes through the second opening intercommunication feed liquor runner, first opening, case and second opening coaxial arrangement, case can cooperate first opening or second opening, the case passes through the valve rod and connects the driving piece, the driving piece drives the case and moves in order to adjust the aperture of first opening or second open-ended aperture along its axial direction.
2. The thermostat of claim 1, wherein one end of the valve rod is connected to an end face of the valve core, and the other end of the valve rod passes through the first liquid outlet channel and extends out of the base body, and the driving member is matched with a section of the valve rod located outside the base body.
3. The thermostat of claim 2, wherein the section of the valve rod outside the base is provided with a rack, the driving member is a driving motor, and an output end of the driving motor is connected with a gear meshed with the rack.
4. The thermostat of claim 1, wherein the spool has a disk-like configuration, and wherein the spool has a cross-sectional shape perpendicular to the axis that matches the first opening and the second opening.
5. The thermostat of claim 4 wherein the valve core is coaxially disposed with the valve stem and has a rounded outer edge.
6. The thermostat of claim 1 wherein the base has a mounting hole for a valve stem to pass through, the mounting hole having a seal fitted therein, the valve stem being slidably engaged with the mounting hole by the seal.
7. The thermostat of claim 6, wherein the seal member includes a plurality of seal rings, annular grooves are provided in the mounting holes in one-to-one correspondence with the seal rings, the seal rings are embedded in the annular grooves, and an inner ring of the seal rings abuts against the valve stem.
8. The thermostat of claim 1 wherein the first opening and the second opening are symmetrically disposed about an axis of the inlet flow passage, the first opening and the second opening are each connected to a distal side of the inlet flow passage, the axis of the first opening is perpendicular to the axis of the inlet flow passage at the location of the connection, the first opening is located on one side of the axis of the first outlet flow passage, and the second opening is located on one end of the axis of the second outlet flow passage.
9. The thermostat of claim 1 further comprising a controller and a temperature sensor mounted to the engine coolant outlet, the temperature sensor for sensing temperature information of the engine coolant and sending the temperature information to the controller, the controller for controlling the actuation of the actuator to adjust the position of the valve spool.
10. A cooling system, characterized in that a thermostat as claimed in any one of claims 1-9 is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551251.3U CN219711652U (en) | 2023-03-16 | 2023-03-16 | Thermostat and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320551251.3U CN219711652U (en) | 2023-03-16 | 2023-03-16 | Thermostat and cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219711652U true CN219711652U (en) | 2023-09-19 |
Family
ID=88014229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320551251.3U Active CN219711652U (en) | 2023-03-16 | 2023-03-16 | Thermostat and cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219711652U (en) |
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2023
- 2023-03-16 CN CN202320551251.3U patent/CN219711652U/en active Active
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