CN110925074B - Thermostat structure and engine - Google Patents
Thermostat structure and engine Download PDFInfo
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- CN110925074B CN110925074B CN201911239214.3A CN201911239214A CN110925074B CN 110925074 B CN110925074 B CN 110925074B CN 201911239214 A CN201911239214 A CN 201911239214A CN 110925074 B CN110925074 B CN 110925074B
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- water temperature
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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
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Abstract
The invention discloses a thermostat structure and an engine, wherein the thermostat structure is arranged in a cooling liquid circulating water path of the engine, the cooling liquid circulating water path comprises a first circulating water path and a circulating branch path, two ends of the circulating branch path are communicated with the first circulating water path to form a second circulating water path, a thermostat is arranged at the communication position of the first circulating branch path and the second circulating branch path, the thermostat structure comprises a water temperature induction column and a valve disc, the water temperature induction column is arranged at the communication position and extends along the radial direction of the cooling liquid circulating water path, and the water temperature induction column comprises a first induction section arranged corresponding to the first circulating water path and a second induction section arranged corresponding to the second circulating water path; the valve disc is sleeved outside the water temperature induction column and is movably arranged along the axial direction of the water temperature induction column, so that the valve disc can rapidly open the second circulation water channel according to the water temperature of the first circulation water channel.
Description
Technical Field
The invention relates to the field of temperature adjusting devices of automobile engine cooling systems, in particular to a thermostat structure and an engine.
Background
In order to meet the strict requirements on oil consumption and emission in the sixth stage of China, technologies such as engine supercharging direct injection miniaturization, in-cylinder integration of an exhaust manifold and a high-pressure fuel injection system are increasingly applied. These techniques improve fuel consumption and emissions issues, but they present significant challenges to engine thermal management as they increase engine thermal load. The traditional wax thermostat completely depends on water temperature to open the thermostat, the water temperature of an engine cannot be accurately controlled, and the electric heating thermostat can effectively solve the problems.
In the prior art, an electric heating thermostat consists of a heating rod, a wax bag, a valve disc, a spring, a shell and a bracket. The ECU controls the electric heating thermostat through an engine wiring harness, the rotating speed, the load, the vehicle speed and the air inlet temperature of the engine are read firstly to obtain the current target water temperature through table lookup, the actual water temperature is read out through a water temperature sensor, and the heating duty ratio is adjusted according to the temperature difference to adjust the water temperature of the engine. Because the electric heating thermostat is arranged at the water inlet of the engine, and the water temperature sensor is arranged at the tail end of the engine cylinder cover with higher temperature, the temperature difference exists between the water temperature near the wax packet of the electric heating thermostat and the water temperature measured by the water temperature sensor. Under some extreme working conditions, the temperature of the water temperature sensor is very high, and according to the relation between the water temperature and the duty ratio, the electric heating thermostat considers that the paraffin can be melted by the water temperature at the moment and does not need to start the heating function. However, due to the temperature difference, the water temperature near the wax bag does not reach the melting temperature, and the thermostat cannot be opened by the water temperature. On the premise that the arrangement of the thermostat cannot be changed, the problem that the temperature of the engine is high due to the fact that the electric heating thermostat is used due to the existence of temperature difference.
Disclosure of Invention
The invention mainly aims to provide a thermostat structure, and aims to solve the problem that a thermostat cannot be opened quickly under the condition of temperature difference.
In order to achieve the above object, the present invention provides a thermostat structure disposed in an engine coolant circulation water path, the coolant circulation water path including a first circulation water path and a circulation branch, two ends of the circulation branch being communicated with the first circulation water path to form a second circulation water path, the thermostat being disposed at a communication position of the first circulation water path and the second circulation water path, the thermostat structure comprising:
the water temperature induction column is arranged at the communication position and extends along the radial direction of the cooling liquid circulation water channel, and comprises a first induction section and a second induction section, wherein the first induction section corresponds to the first circulation water channel, and the second induction section corresponds to the second circulation water channel; and the number of the first and second groups,
the valve disc is sleeved outside the water temperature induction column and movably arranged along the axial direction of the water temperature induction column, and the valve disc is provided with a first position and a second position, wherein the first position is in sealing fit with the first induction section so that cooling water circulates in the first circulating water path, and the second position is in clearance fit with the second induction section so that the cooling water circulates in the first circulating water path and the second circulating water path simultaneously.
Optionally, one end of the valve disc, which is far away from the water temperature sensing column, is provided with a flow collecting plate, and the flow collecting plate extends along the axial direction of the water temperature sensing column and is arranged corresponding to the first sensing section.
Optionally, the extension length of the current collecting plate is not less than the height of the effective water temperature sensing area of the first sensing section; and/or the presence of a gas in the gas,
the extension length of the current collecting plate is 12 mm-24 mm.
Optionally, the width of the current collecting plate is greater than the radial width of the first induction section; and/or the presence of a gas in the gas,
the width of the flow gathering plate is 12 mm-18 mm; and/or the presence of a gas in the gas,
the flow collecting plate is arranged in parallel with the water temperature induction column in the axial direction.
Optionally, the flow collecting plate has two opposite sides arranged along the radial direction of the water temperature sensing column, and two sides of the flow collecting plate are provided with side plates extending towards the water temperature sensing column.
Optionally, in a radial direction of the water temperature sensing column, the width of the first sensing section is greater than that of the second sensing section;
the valve disc is provided with a mounting hole for mounting the valve disc on the water temperature induction column, and the mounting hole is matched with the first induction section.
Optionally, the thermostat structure further comprises:
the adjusting plate is movably sleeved at one end, far away from the second induction section, of the water temperature induction column and used for moving towards the second induction section when the first induction section senses that the water temperature of the cooling water rises; and the number of the first and second groups,
the first spring is sleeved outside the first induction section, one end of the first spring is connected with the adjusting plate, the other end of the first spring is connected with the valve disc, and the adjusting plate faces towards the second induction section and drives the valve disc to face towards the second induction section when the second induction section moves.
Optionally, the thermostat structure further comprises:
the base is fixedly arranged at one end, far away from the first induction section, of the water temperature induction column; and the number of the first and second groups,
the second spring is sleeved outside the second induction section, one end of the second spring is connected with the base, and the other end of the second spring is connected with the valve disc and used for driving the valve disc to move and reset towards the first induction section.
Optionally, the thermostat structure further comprises a housing, an end of the water temperature sensing column is fixedly connected to the housing, the housing is provided with two brackets which extend towards the water temperature sensing column and are oppositely arranged, and the two mounting brackets are correspondingly provided with sliding grooves;
and a connecting plate is arranged at one end of the valve disc, which is far away from the water temperature induction column, the connecting plate and the flow gathering plate are arranged at intervals, and the connecting plate is arranged in the sliding groove.
The invention also provides an engine which is characterized by comprising a thermostat structure, wherein the thermostat structure is arranged in a cooling liquid circulating water path of the engine, the cooling liquid circulating water path comprises a first circulating water path and a circulating branch, two ends of the circulating branch are communicated with the first circulating water path to form a second circulating water path, and the thermostat is arranged at the communication position of the first circulating water path and the second circulating water path; the valve disc is sleeved outside the water temperature induction column and movably arranged along the axial direction of the water temperature induction column, and the valve disc is provided with a first position and a second position, wherein the first position is in sealing fit with the first induction section so that cooling water circulates in the first circulating water path, and the second position is in clearance fit with the second induction section so that the cooling water circulates in the first circulating water path and the second circulating water path simultaneously.
According to the technical scheme, the water temperature sensing column is arranged at the communication position of the first circulating water path and the second circulating water path, and the water temperature is sensed through the water temperature sensing column, so that the valve disc sleeved on the water temperature sensing column moves up and down, and the effect of quickly opening the thermostat is achieved.
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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of an embodiment of a thermostat structure provided in the present invention;
FIG. 2 is a side view of the thermostat structure provided in FIG. 1;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a schematic structural view of the valve disc of FIG. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Structure of |
212 | |
| 1 | |
22 | |
| 11 | |
221 | |
| 12 | |
222 | |
| 13 | |
3 | |
| 131 | |
31 | |
| 14 | |
311 | Side plate |
| 2 | Water |
32 | |
| 21 | |
33 | |
| 211 | Adjusting plate |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing electric heating thermostat is arranged at a water inlet of an engine, and a water temperature sensor is arranged at the tail end of a cylinder cover of the engine with higher temperature, so that the temperature difference exists between the water temperature near a wax packet of the electric heating thermostat and the water temperature measured by the water temperature sensor. Under some extreme working conditions, the temperature measured by the water temperature sensor is very high, and according to the relation between the water temperature and the duty ratio, the electric heating thermostat considers that the paraffin can be melted by the water temperature at the moment without starting the heating function. However, due to the temperature difference, the water temperature near the wax bag does not reach the melting temperature, and the thermostat cannot be opened by the water temperature. On the premise that the arrangement of the thermostat cannot be changed, the problem that the temperature of the engine is high due to the fact that the electric heating thermostat is used due to the existence of temperature difference. In view of this, the present invention provides a thermostat structure that allows the thermostat to open quickly even in the presence of temperature differences.
The invention provides a thermostat structure 100, which is suitable for an electric heating thermostat, please refer to fig. 1 and fig. 2, the thermostat structure 100 is arranged in a coolant circulation water path of an engine, the coolant circulation water path includes a first circulation water path and a circulation branch, two ends of the circulation branch are communicated with the first circulation water path to form a second circulation water path, and the thermostat is arranged at a communication position of the first circulation water path and the second circulation water path. The thermostat structure 100 comprises a water temperature induction column 2 and a valve disc 3, the water temperature induction column 2 is arranged at the communication position and extends along the radial direction of the cooling liquid circulation water channel, and the water temperature induction column 2 comprises a first induction section 21 arranged corresponding to the first circulation water channel and a second induction section 22 arranged corresponding to the second circulation water channel; the valve disc 3 is sleeved outside the water temperature induction column 2 and movably arranged along the axial direction of the water temperature induction column 2, and the valve disc 3 is provided with a first position which is in sealing fit with the first induction section 21 so that cooling water circulates in the first circulation water path, and a second position which is in clearance fit with the second induction section 22 so that the cooling water circulates in the first circulation water path and the second circulation water path simultaneously.
In the technical scheme of the invention, the water temperature induction column 2 is arranged at the communication position of the first circulation branch and the second circulation branch, and the water temperature is induced by the water temperature induction column 2, so that the valve disc 3 sleeved on the water temperature induction column 2 moves up and down, and the effect of quickly opening the thermostat is achieved.
Specifically, the first circulation water path is a small circulation of engine coolant; the second circulation water path is a large circulation of the engine coolant, namely a heat dissipation circulation of the coolant. It should be noted that the water temperature sensing column 2 extends along the "radial direction" of the cooling liquid circulation water path, and is not limited to a cylindrical shape, and only refers to the extending direction from the center to the edge of the water temperature sensing column, and the water temperature sensing column 2 may have other shapes, such as a prism shape, with a larger contact surface with water.
Referring to fig. 1 and 2, further, the valve disc 3 is horizontally disposed and sleeved on the water temperature sensing column 2, and a flow collecting plate 31 is disposed at an end of the valve disc 3 away from the water temperature sensing column 2, the flow collecting plate 31 extends along the axial direction of the water temperature sensing column 2 and is disposed corresponding to the first sensing section 21, so that when the cooling liquid flowing in the first circulation water channel passes through the first sensing section 21, the cooling liquid can be collected at the first sensing section 21, and the temperature of the first sensing section 21 of the water temperature sensing column 2 is higher.
Preferably, the extension length of the current collecting plate 31 is not less than the height of the effective water temperature sensing area of the first sensing section 21, where the extension length refers to the length of the current collecting plate 31 in the up-down direction; in this embodiment, the extension length of the current collecting plate 31 is 12mm to 24 mm; the width of the current collecting plate 31 is greater than the radial width of the first sensing section 21, where the width of the current collecting plate 31 is the width of the connection with the valve disc 3; in this embodiment, the width of the current collecting plate 31 is 12mm to 18 mm; the flow collecting plate 31 is disposed parallel to the axial direction of the water temperature sensing column 2, that is, the flow collecting plate 31 and the portion of the flow collecting plate 31 extending toward the valve disc 3 are disposed at 90 °, but may be disposed at other angles, where 90 ° is more favorable for reducing the flow velocity at the first sensing section 21, so as to collect the coolant around the first sensing section 21.
Specifically, referring to fig. 4, two sides of the current collecting plate 31 are oppositely disposed along the radial direction of the water temperature sensing column 2, and two sides of the current collecting plate 31 are provided with side plates 311 extending toward the water temperature sensing column 2, so that the cooling liquid is collected at the first sensing section 21.
Referring to fig. 2 and 3, in the radial direction of the water temperature sensing column 2, the width of the first sensing section 21 is greater than that of the second sensing section 22.
Further, referring to fig. 4, the valve disc 3 is plate-shaped and is adapted to an inlet of the second circulating water path, a mounting hole 32 is formed in the middle of the valve disc 3 to mount the valve disc 3 on the water temperature sensing column 2, and the mounting hole 32 is adapted to the first sensing section 21. Preferably, the mounting hole 32 is a circular hole, and the first sensing segment 21 is correspondingly disposed in a cylinder.
Furthermore, the thermostat structure 100 further includes an adjusting plate 211 and a first spring 212, wherein the adjusting plate 211 is movably sleeved at one end of the water temperature sensing column 2 far away from the second sensing section 22, so as to move towards the second sensing section when the first sensing section 21 senses that the temperature of the cooling water is increased; first spring 212 cover is established the outside of first response section 21, the one end of first spring 212 with regulating plate 211 is connected, the other end with valve disc 3 is connected, with regulating plate 211 orientation when the second response section removes, drive valve disc 3 orientation the second response section removes for the coolant liquid is followed mounting hole 32 with the clearance of second response post 22 flows in the second circulation water route.
Furthermore, the thermostat structure 100 further comprises a base 221 and a second spring 222, which are fixedly installed at one end of the water temperature sensing column 2 far away from the first sensing section 21 and one end of the water temperature sensing column far away from the first sensing section 21; the second spring 222 is sleeved outside the second sensing section 22, one end of the second spring 222 is connected to the base 221, and the other end of the second spring 222 is connected to the valve disc 3, so as to drive the valve disc 3 to move and reset toward the first sensing section 21, so that the cooling liquid heat dissipation cycle is closed.
Furthermore, the thermostat structure 100 further comprises a housing 1, the thermostat structure 100 further comprises the housing 1, and the housing 1 is provided with a water inlet 11 for communicating with the second circulating water path; the water temperature induction column 2 is fixedly connected below the shell 1 and extends along the radial direction of the cooling liquid circulation water channel, the end part of the water temperature induction column 2 is fixedly connected with the shell 1, the shell 1 is provided with two brackets 13 which extend towards the water temperature induction column 2 and are oppositely arranged, and the two mounting brackets 13 are correspondingly provided with sliding grooves 131; a connecting plate 33 is disposed at an end of the valve disc 3 away from the water temperature sensing column 2, the connecting plate 33 and the flow collecting plate 31 are spaced, the connecting plate 33 is disposed on the sliding groove 131, and the sliding groove 131 has a movable stroke, so that the valve disc 3 is movably disposed on the water temperature sensing column 2, and the second circulating water path is opened or closed.
Preferably, the water temperature sensing column 2 contains a wax pack inside for sensing the water temperature, so that the paraffin is melted and increased in volume when the water temperature rises, thereby pushing the adjustment plate 211 to move downward.
Preferably, the housing 1 further comprises a water replenishment port 14 for replenishing the cooling liquid; the shell is further provided with an electric plug, and the water temperature induction column 2 is internally provided with a heating device to heat and melt the wax packet.
The invention also provides an engine, which comprises the thermostat structure 100, wherein the thermostat structure 100 is arranged in a cooling liquid circulating water path of the engine, the cooling liquid circulating water path comprises a first circulating water path and a circulating branch, two ends of the circulating branch are communicated with the first circulating water path to form a second circulating water path, and the thermostat is arranged at the communication position of the first circulating branch and the second circulating branch; the valve disc 3 is sleeved outside the water temperature induction column 2 and movably arranged along the axial direction of the water temperature induction column 2, and the valve disc 3 is provided with a first position which is in sealing fit with the first induction section 21 so that cooling water circulates in the first circulation water path, and a second position which is in clearance fit with the second induction section 22 so that the cooling water circulates in the first circulation water path and the second circulation water path simultaneously.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (9)
1. The utility model provides a thermostat structure establishes in engine coolant liquid circulation water route, coolant liquid circulation water route includes first circulation water route and circulation branch road, the both ends of circulation branch road with first circulation water route intercommunication to form second circulation water route, the thermostat is located first circulation water route with the intercommunication department in second circulation water route, its characterized in that, the thermostat structure includes:
the water temperature induction column is arranged at the communication position and extends along the radial direction of the cooling liquid circulation water channel, and comprises a first induction section and a second induction section, wherein the first induction section corresponds to the first circulation water channel, and the second induction section corresponds to the second circulation water channel; and the number of the first and second groups,
the valve disc is sleeved outside the water temperature induction column and movably arranged along the axial direction of the water temperature induction column, and is provided with a first position which is in sealing fit with the first induction section so that cooling water flows in the first circulating water path and a second position which is in clearance fit with the second induction section so that the cooling water flows in the first circulating water path and the second circulating water path simultaneously;
wherein, the thermostat structure still includes:
the adjusting plate is movably sleeved at one end, far away from the second induction section, of the water temperature induction column and used for moving towards the second induction section when the first induction section senses that the water temperature of the cooling water rises; and the number of the first and second groups,
the first spring is sleeved outside the first induction section, one end of the first spring is connected with the adjusting plate, the other end of the first spring is connected with the valve disc, and the adjusting plate faces towards the second induction section and drives the valve disc to face towards the second induction section when the second induction section moves.
2. The thermostat structure according to claim 1, wherein a flow collecting plate is provided at an end of the valve disc away from the water temperature sensing post, the flow collecting plate extending in an axial direction of the water temperature sensing post and being disposed corresponding to the first sensing section.
3. A thermostat structure according to claim 2, wherein said flow collecting plate extends for a length not less than the height of the effective water temperature sensing zone of said first sensing section; and/or the presence of a gas in the gas,
the extension length of the current collecting plate is 12 mm-24 mm.
4. A thermostat structure according to claim 2, wherein the width of said flow focusing plate is greater than the radial width of said first sensing section; and/or the presence of a gas in the gas,
the width of the flow gathering plate is 12 mm-18 mm; and/or the presence of a gas in the gas,
the flow collecting plate is arranged in parallel with the water temperature induction column in the axial direction.
5. The thermostat structure of claim 2, wherein the flow collecting plate has two sides disposed opposite to each other in a radial direction of the water temperature sensing post, and side plates extending toward the water temperature sensing post are provided on the two sides of the flow collecting plate.
6. A thermostat structure according to claim 1, wherein said first sensing section has a width larger than that of said second sensing section in a radial direction of said water temperature sensing column;
the valve disc is provided with a mounting hole for mounting the valve disc on the water temperature induction column, and the mounting hole is matched with the first induction section.
7. The thermostat structure of claim 1, further comprising:
the base is fixedly arranged at one end, far away from the first induction section, of the water temperature induction column; and the number of the first and second groups,
the second spring is sleeved outside the second induction section, one end of the second spring is connected with the base, and the other end of the second spring is connected with the valve disc and used for driving the valve disc to move and reset towards the first induction section.
8. The thermostat structure according to claim 2, wherein the thermostat structure further comprises a housing, one end of the water temperature sensing column far away from the second sensing section is fixedly connected with the housing, the housing is provided with two brackets extending towards the water temperature sensing column and oppositely arranged, and the two mounting brackets are correspondingly provided with sliding grooves;
and a connecting plate is arranged at one end of the valve disc, which is far away from the water temperature induction column, the connecting plate and the flow gathering plate are arranged at intervals, and the connecting plate is arranged in the sliding groove.
9. An engine comprising a thermostat construction, said thermostat construction being as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239214.3A CN110925074B (en) | 2019-12-05 | 2019-12-05 | Thermostat structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239214.3A CN110925074B (en) | 2019-12-05 | 2019-12-05 | Thermostat structure and engine |
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| CN110925074A CN110925074A (en) | 2020-03-27 |
| CN110925074B true CN110925074B (en) | 2021-02-05 |
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| CN201911239214.3A Active CN110925074B (en) | 2019-12-05 | 2019-12-05 | Thermostat structure and engine |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2325168A1 (en) * | 2000-11-06 | 2002-05-06 | Joseph Fishman | Electronically controlled thermostat |
| CN204691888U (en) * | 2015-06-17 | 2015-10-07 | 重庆长安汽车股份有限公司 | A kind of thermostat support with flow guide structure |
| CN208456708U (en) * | 2018-04-28 | 2019-02-01 | 江西腾勒动力有限公司 | A kind of engine water paths structure |
| CN208364904U (en) * | 2018-06-13 | 2019-01-11 | 瑞安市万泰汽车电器有限公司 | A kind of intelligent electric-controlledization electronic thermostat |
| CN110185533A (en) * | 2019-06-26 | 2019-08-30 | 曲阜天博汽车零部件制造有限公司 | A kind of thermosistor of the engine-cooling system with opposite design structure |
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