CN213743650U - Cooling fan system and vehicle - Google Patents
Cooling fan system and vehicle Download PDFInfo
- Publication number
- CN213743650U CN213743650U CN202022310048.6U CN202022310048U CN213743650U CN 213743650 U CN213743650 U CN 213743650U CN 202022310048 U CN202022310048 U CN 202022310048U CN 213743650 U CN213743650 U CN 213743650U
- Authority
- CN
- China
- Prior art keywords
- contact switch
- electromagnetic clutch
- coil
- relay
- coils
- Prior art date
- 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.)
- Active
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 230000005540 biological transmission Effects 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000012809 cooling fluid Substances 0.000 claims description 2
- 238000002679 ablation Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 14
- 239000002826 coolant Substances 0.000 description 13
- 230000007423 decrease Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The embodiment of the utility model discloses cooling fan system and vehicle. Wherein, this cooling fan system includes: the temperature control switch comprises at least one contact switch unit; the relays are arranged in one-to-one correspondence with the contact switch units of the temperature control switches, the contact switch units of the temperature control switches are connected in series with the first coils of the corresponding relays, and the two ends of the series connection are respectively and electrically connected with the first end and the second end of the power supply; the second coils of the electromagnetic clutches and the relays are arranged in a one-to-one correspondence mode, the second coils of the electromagnetic clutches are connected in series with the first normally open contact switches of the corresponding relays, and two ends of the second coils after the second coils of the electromagnetic clutches are connected in series are electrically connected with the first end and the second end of the power supply respectively; the fan is connected with the electromagnetic clutch. The embodiment of the utility model provides a technical scheme can reduce temperature detect switch branch current, effectively reduces temperature detect switch's ablation fault rate.
Description
Technical Field
The utility model relates to the technical field of engines, especially, relate to a cooling fan system and vehicle.
Background
Cooling fans are an important part of engine cooling systems. The fan is connected with the engine through the electromagnetic clutch. The temperature control switch is used for monitoring the water temperature of the engine. The temperature control switch is provided with different temperature gear switches. Different temperature gear switches correspond to different coils of the electromagnetic clutch. Different coils of the electromagnetic clutch correspond to different power transmission efficiencies. When the water temperature of the engine reaches the threshold temperature of the corresponding gear switch action, the gear switch is conducted, the corresponding coil in the electromagnetic clutch is electrified, and the engine drives the fan to rotate.
Because the temperature control switch is repeatedly switched on and off under a larger current, the problem of ablation damage of different degrees exists, so that the failure rate of the electromagnetic clutch is higher, and the system reliability is poorer.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides a cooling fan system and vehicle to realize temperature detect switch control relay, relay control electromagnetic clutch's purpose reduces temperature detect switch branch road electric current, effectively reduces temperature detect switch's ablation fault rate.
In a first aspect, an embodiment of the present invention provides a cooling fan system, including:
a power source;
a temperature controlled switch including at least one contact switch unit;
the relays are arranged in one-to-one correspondence with the contact switch units of the temperature control switch and comprise first coils and first normally open contact switches, the contact switch units of the temperature control switch are connected with the first coils of the corresponding relays in series, and two ends of the contact switch units after being connected in series are respectively electrically connected with a first end and a second end of a power supply;
the second coils of the electromagnetic clutches are arranged in one-to-one correspondence with the relays, the second coils of the electromagnetic clutches are connected in series with the first normally open contact switches of the corresponding relays, and the two ends of the second coils after the second coils are connected in series are respectively electrically connected with the first end and the second end of the power supply;
and the fan is connected with the electromagnetic clutch.
Furthermore, the number of the contact switch units in the temperature control switch is two, and different contact switch units correspond to different temperature gears;
the two second coils of the electromagnetic clutch are respectively a large coil and a small coil, the large coil of the electromagnetic clutch is annular, the small coil of the electromagnetic clutch is annular, and the large coil and the small coil of the electromagnetic clutch are arranged in a concentric ring type;
the relay corresponding to the contact switch unit with the high temperature gear corresponds to the large coil of the electromagnetic clutch; and the relay corresponding to the contact switch unit with low temperature gear corresponds to the small coil of the electromagnetic clutch.
Furthermore, the relay corresponding to the contact switch unit with the high temperature gear further comprises a second normally open contact switch, and the second normally open contact switch is connected in parallel with the first normally open contact switch of the relay corresponding to the contact switch unit with the low temperature gear.
Further, the cooling fan system further includes an overcurrent protection element, a first end of the power supply is electrically connected to a first end of the overcurrent protection element,
the contact switch unit of the temperature control switch is connected with the first coil of the corresponding relay in series, and the two ends of the temperature control switch after being connected in series are respectively and electrically connected with the second end of the power supply and the second end of the over-current protection element;
and the second coil of the electromagnetic clutch is connected with the first normally-open contact switch of the corresponding relay in series, and two ends of the electromagnetic clutch after being connected in series are respectively and electrically connected with the second end of the power supply and the second end of the over-current protection element.
Further, the overcurrent protection element includes a fuse or a circuit breaker.
Further, the cooling fan system further comprises a first diode arranged corresponding to the relay, the first diode is connected in parallel with the first coil of the corresponding relay, and the first diode is used for discharging current in the first coil of the corresponding relay when the contact switch unit corresponding to the corresponding relay is changed from on to off.
Further, the cooling fan system further comprises a second diode arranged corresponding to the second coil of the electromagnetic clutch, the second diode is connected in parallel with the corresponding second coil of the electromagnetic clutch, and the second diode is used for discharging current in the corresponding second coil of the electromagnetic clutch when the corresponding first normally-open contact switch of the relay is changed from on to off.
Further, the temperature control switch is a metal expansion type temperature control switch.
Further, the contact switch unit includes: the bimetallic strip, the transmission part, the movable contact and the fixed contact are arranged in a laminated mode, and the bimetallic strip is connected with the movable contact through the transmission part.
In a second aspect, the embodiment of the present invention further provides a vehicle, including: the engine with the utility model discloses the cooling fan system that arbitrary embodiment provided, the engine is connected with the fan through electromagnetic clutch, and the engine is used for providing power for the fan through electromagnetic clutch, and temperature detect switch is used for monitoring the temperature of engine cooling system's coolant liquid.
The utility model discloses among the technical scheme, cooling fan system includes: the temperature control switch comprises at least one contact switch unit; the relays are arranged in one-to-one correspondence with the contact switch units of the temperature control switches, each relay comprises a first coil and a first normally open contact switch, the contact switch units of the temperature control switches are connected in series with the corresponding first coils of the relays, and the two ends of the relays after being connected in series are respectively electrically connected with the first end and the second end of the power supply; the second coils of the electromagnetic clutches and the relays are arranged in a one-to-one correspondence mode, the second coils of the electromagnetic clutches are connected in series with the first normally open contact switches of the corresponding relays, and two ends of the second coils after the second coils of the electromagnetic clutches are connected in series are electrically connected with the first end and the second end of the power supply respectively; the fan is connected with the electromagnetic clutch to realize the purpose that the temperature control switch controls the relay, and the relay controls the electromagnetic clutch, reduce the branch current of the temperature control switch, and effectively reduce the ablation fault rate of the temperature control switch.
Drawings
Fig. 1 is a schematic circuit diagram of a cooling fan system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an overall structure of a cooling fan system according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of another cooling fan system according to an embodiment of the present invention;
fig. 4 is a schematic cross-sectional structural view of an electromagnetic clutch according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of another cooling fan system according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of another cooling fan system according to an embodiment of the present invention;
fig. 7 is a schematic cross-sectional structure diagram of a temperature control switch according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the utility model provides a cooling fan system. Fig. 1 is a schematic circuit diagram of a cooling fan system according to an embodiment of the present invention. Fig. 2 is a schematic view of an overall structure of a cooling fan system according to an embodiment of the present invention. The cooling fan system includes: a power supply 10, a temperature controlled switch 20, a relay 30, an electromagnetic clutch 40, and a fan 50.
Wherein the temperature controlled switch 20 comprises at least one contact switch unit 21. The relays 30 are arranged in one-to-one correspondence with the contact switch units 21 of the temperature control switch 20, each relay 30 comprises a first coil 31 and a first normally open contact switch 32, the contact switch units 21 of the temperature control switch 20 are connected in series with the corresponding first coils 31 of the relays 30, and two ends of the series connection are electrically connected with the first end N1 and the second end N2 of the power supply 10 respectively. The second coils 41 of the electromagnetic clutches 40 are arranged in one-to-one correspondence with the relays 30, the second coils 41 of the electromagnetic clutches 40 are connected in series with the first normally open contact switches 32 of the corresponding relays 30, and the two ends of the series are electrically connected with the first end N1 and the second end N2 of the power supply 10 respectively. The fan 50 is connected to the electromagnetic clutch 40.
The power supply 10 may be a dc power supply. The temperature controlled switch 20 may be used to monitor the temperature of the coolant of the engine cooling system. The temperature-controlled switch 20 may be provided at a coolant outlet of the engine cooling system. The engine cooling system may be a water cooling system. The cooling fluid may be water. The number of the contact switch units 21 in the temperature-controlled switch 20 may be one or more. If the number of the contact switch units 21 in the temperature control switch 20 is plural, different contact switch units 21 correspond to different temperature steps. The contact switch unit 21 changes from the off state to the on state when the temperature of the coolant of the engine cooling system gradually rises above a first set temperature; and when the temperature of the cooling liquid of the engine cooling system is gradually reduced to be lower than the second set temperature, the on state is changed into the off state. The first set temperature may be greater than or equal to the second set temperature. The first set temperature and the second set temperature for different contact switch units 21 are different. The higher the first set temperature and the second set temperature corresponding to the contact switch unit 21 are, the higher the temperature step corresponding to the contact switch unit 21 is. The temperature control switch 20 may be a metal expansion type temperature control switch. The engine 1 may power the fan 50 through the electromagnetic clutch 40. The relay 30 may be mounted on and fixed to the engine front bracket.
Fig. 1 exemplarily shows a case where the number of the contact switch units 21 in the temperature control switch 20 is one. As shown in fig. 1, when the temperature of the coolant of the engine cooling system gradually increases to be higher than the first set temperature, the contact switch unit 21 is turned from the off state to the on state, the first coil 31 of the relay 30 is energized, the first normally open contact switch 32 is turned from the off state to the on state, and the second coil 41 of the electromagnetic clutch 40 is energized, so that the rotation speed of the fan 50 is increased. When the temperature of the coolant of the engine cooling system gradually decreases to be lower than the second set temperature, the contact switch unit 21 is turned from the on state to the off state, the first coil 31 of the relay 30 is de-energized, the first normally open contact switch 32 is turned from the on state to the off state, and the second coil 41 of the electromagnetic clutch 40 is de-energized, so that the rotation speed of the fan 50 decreases.
The contact switch unit 21 in the temperature control switch 20 and the first coil 31 of the corresponding relay 30 are arranged in a loop, the first normally open contact switch 32 of the corresponding relay 30 and the second coil 41 of the electromagnetic clutch 40 are arranged in another loop, so that the relay is controlled by the temperature control switch, the purpose of controlling the electromagnetic clutch by the relay is realized, namely, a clutch wire harness of the integrated relay controller is developed, the purpose of circuit conversion is realized, the situation that the temperature control switch is directly arranged in the same loop with the second coil of the electromagnetic clutch is avoided, the loop current is large, and the situation that the temperature control switch is ablated is caused is avoided.
In the technical solution of this embodiment, the cooling fan system includes: the temperature control switch comprises at least one contact switch unit; the relays are arranged in one-to-one correspondence with the contact switch units of the temperature control switches, each relay comprises a first coil and a first normally open contact switch, the contact switch units of the temperature control switches are connected in series with the corresponding first coils of the relays, and the two ends of the relays after being connected in series are respectively electrically connected with the first end and the second end of the power supply; the second coils of the electromagnetic clutches and the relays are arranged in a one-to-one correspondence mode, the second coils of the electromagnetic clutches are connected in series with the first normally open contact switches of the corresponding relays, and two ends of the second coils after the second coils of the electromagnetic clutches are connected in series are electrically connected with the first end and the second end of the power supply respectively; the fan is connected with the electromagnetic clutch to realize the purpose that the temperature control switch controls the relay, and the relay controls the electromagnetic clutch, reduce the branch current of the temperature control switch, and effectively reduce the ablation fault rate of the temperature control switch.
Optionally, on the basis of the above embodiment, fig. 3 is a schematic circuit structure diagram of another cooling fan system provided by the embodiment of the present invention, and fig. 4 is a schematic sectional structure diagram of an electromagnetic clutch provided by the embodiment of the present invention, the number of the contact switch units 21 in the temperature control switch 20 is two, and different contact switch units 21 correspond to different temperature gears. The electromagnetic clutch 40 has two second coils 41, and the two second coils 41 are a large coil 411 and a small coil 412, respectively. The relay 301 corresponding to the contact switch unit 211 with a high temperature position corresponds to the large coil 411 of the electromagnetic clutch 40; the relay 302 corresponding to the contact switch unit 212 having a low temperature step corresponds to the small coil 412 of the electromagnetic clutch 40.
The large coil 411 of the electromagnetic clutch 40 may be in a ring shape, the small coil 412 of the electromagnetic clutch 40 may be in a ring shape, and the large coil 411 and the small coil 412 of the electromagnetic clutch 40 may be arranged in a concentric ring shape. The large attracting disk 421 of the electromagnetic clutch 40 may be ring-shaped, the small attracting disk 422 of the electromagnetic clutch 40 may be ring-shaped, and the large attracting disk 421 and the small attracting disk 422 of the electromagnetic clutch 40 may be arranged in concentric rings. The large coil 411 of the electromagnetic clutch 40 is used for controlling the attraction and separation of the large attraction disc 421 and the transmission disc 424. The small coil 412 of the electromagnetic clutch 40 is used for controlling the engagement and disengagement of the small engaging disk 422 and the driving disk 424.
The large coil 411 of the electromagnetic clutch 40 is electrified to generate electromagnetic force to attract the large attraction disc 421, so that the large attraction disc is pressed onto the transmission disc 424, and power is transmitted between the large attraction disc and the transmission disc 424 by virtue of static friction force. At this time, the large suction plate 421 and the fan installation plate 423 are rigidly connected. The power transmission path may be from the engine rotating main shaft 101 to the transmission disc, then to the large suction disc 421, then to the fan mounting disc 423, and then to the fan.
The small coil 412 of the electromagnetic clutch 40 is electrified to generate electromagnetic force to attract the small attraction disc 422, so that the small attraction disc 422 is pressed on the transmission disc 424, and power is transmitted between the small attraction disc 422 and the transmission disc 424 by static friction force. The ring-shaped steel plate 425 is cast in the aluminum fan mounting plate 423, and the permanent magnet 426 rotates the ring-shaped steel plate 425 by means of permanent magnetic force, thereby rotating the fan mounting plate 423 and the fan. The power transmission path can be from the engine rotating main shaft 101 to the transmission disc 424, then to the small attracting disc 422, then to the permanent magnet 426, then to the annular steel plate 425, then to the fan mounting disc 423, and then to the fan.
The fan has three running states, namely first gear, second gear and third gear, and the rotating speed is increased in sequence. As shown in fig. 3, in the first gear, when neither the large coil 411 nor the small coil 412 of the electromagnetic clutch 40 is energized, the fan rotation speed is the lowest, and the efficiency of the engine to transmit power to the fan is the lowest. In the second gear, the small coil 412 of the electromagnetic clutch 40 is energized, and when the large coil 411 is not energized, the fan speed is low. In the third gear, when the large coil 411 and the small coil 412 of the electromagnetic clutch 40 are both electrified, the rotating speed of the fan is high, and the efficiency of the engine for transmitting power to the fan is highest.
As shown in fig. 3, when the temperature of the coolant of the engine cooling system gradually increases to a first set temperature corresponding to the contact switch unit 212 having a lower temperature range, the contact switch unit 212 is turned from the off state to the on state, the first coil 31 of the relay 302 is energized, the first normally open contact switch 32 of the relay 302 is turned from the off state to the on state, and the small coil 412 of the electromagnetic clutch 40 is energized, so that the rotation speed of the fan 50 is increased from the first gear to the second gear. Then, if the fan rotation speed continues to gradually increase to the first set temperature corresponding to the contact switch unit 211 higher than the temperature gear, when the temperature of the coolant of the engine cooling system continues to increase, the contact switch unit 211 is turned from the off state to the on state, the first coil 31 of the relay 301 is energized, the first normally open contact switch 32 of the relay 301 is turned from the off state to the on state, and the large coil 411 of the electromagnetic clutch 40 is energized, so that the rotation speed of the fan 50 is increased from the second gear to the third gear. Then, when the fan rotation speed gradually decreases to a second set temperature corresponding to the contact switch unit 211 having a higher temperature step when the temperature of the coolant in the engine cooling system is lower than the first set temperature, the first coil 31 of the relay 301 is de-energized, the first normally open contact switch 32 of the relay 301 is de-energized from the on state to the off state, and the large coil 411 of the electromagnetic clutch 40 is de-energized, so that the rotation speed of the fan 50 decreases from the third gear to the second gear. Then, if the fan rotation speed continues to gradually decrease to a second set temperature corresponding to the contact switch unit 212 with a lower temperature step as the temperature of the coolant of the engine cooling system continues to decrease, the contact switch unit 212 changes from the on state to the off state, the first coil 31 of the relay 302 is de-energized, the first normally open contact switch 32 of the relay 302 changes from the on state to the off state, and the small coil 412 of the electromagnetic clutch 40 is de-energized, so that the rotation speed of the fan 50 decreases from the second gear to the first gear.
Optionally, on the basis of the above embodiment, fig. 5 is a schematic circuit structure diagram of another cooling fan system provided in the embodiment of the present invention, the relay 30 corresponding to the contact switch unit 211 with a high temperature gear further includes a second normally open contact switch 33, and the second normally open contact switch 33 is connected in parallel with the first normally open contact switch 32 of the relay 30 corresponding to the contact switch unit 212 with a low temperature gear.
When the first normally open contact switch 32 of the relay 302 corresponding to the contact switch unit 212 with the low temperature gear and/or the contact switch unit 212 with the low temperature gear cannot be normally closed, if the fan rotation speed is increased gradually to a first set temperature corresponding to the contact switch unit 211 with the high temperature gear if the temperature of the coolant of the engine cooling system is higher than the temperature of the coolant of the engine cooling system, the contact switch unit 211 is changed from the off state to the on state, the first coil 31 of the relay 301 is electrified, the first normally open contact switch 32 of the relay 301 is changed from the off state to the on state, the second normally open contact switch 33 of the relay 301 is changed from the off state to the on state, the large coil 411 of the electromagnetic clutch 40 is electrified, the small coil 412 of the electromagnetic clutch 40 is electrified, so that the rotation speed of the fan 50 is increased to the third gear, and therefore, the first normally open contact switch 32 of the relay 302 corresponding to the contact switch unit 212 with the low temperature gear and/or the single normally open contact switch unit 212 with the low temperature gear is avoided When the element 212 is not normally closed, the small coil of the electromagnetic clutch is not normally energized, and the rotation speed of the fan 50 cannot reach the expected rotation speed of the third gear.
Optionally, on the basis of the above embodiment, with continuing reference to fig. 5, the cooling fan system further includes an overcurrent protection element 60, and the first terminal N1 of the power supply 10 is electrically connected to the first terminal of the overcurrent protection element 60. The contact switch unit 21 of the temperature controlled switch 20 is connected in series with the first coil 31 of the corresponding relay 30, and both ends of the series connection are electrically connected to the second end N2 of the power supply 10 and the second end of the overcurrent protection element 60, respectively. The second coil of the electromagnetic clutch 40 is connected in series with the first normally-open contact switch 32 of the corresponding relay 30, and both ends of the series are electrically connected to the second end N2 of the power supply 10 and the second end of the overcurrent protection element 60, respectively.
Wherein, the first terminal N1 of the power source 10 may be a positive electrode, and the second terminal N2 may be a negative electrode; alternatively, the first terminal N1 of the power supply 10 may be a negative terminal and the second terminal N2 may be a positive terminal. Optionally, the overcurrent protection element 60 includes a fuse or a circuit breaker.
Optionally, on the basis of the above embodiment, fig. 6 is a schematic circuit structure diagram of another cooling fan system provided by the embodiment of the present invention, the cooling fan system further includes a first diode D1 corresponding to the relay 30, the first diode D1 is connected in parallel with the first coil 31 of the corresponding relay 30, and the first diode D1 is configured to bleed the current in the first coil 31 of the corresponding relay 30 when the contact switch unit 21 corresponding to the corresponding relay 30 is turned off from on.
When the contact switch unit 21 is turned on and the first coil 31 of the corresponding relay 30 is energized, the corresponding first diode D1 is turned off. When the contact switch unit 21 is turned off from on and the first coil 31 of the relay 30 is turned off from on, the corresponding first diode D1 is turned on to discharge the current in the first coil 31 of the relay 30. The first terminal N1 of the power supply 10 in fig. 6 may be a positive terminal and the second terminal N2 may be a negative terminal.
Optionally, on the basis of the above embodiment, with continuing reference to fig. 6, the cooling fan system further includes a second diode D2 disposed corresponding to the second coil 41 of the electromagnetic clutch 40, the second diode D2 is connected in parallel with the corresponding second coil 41 of the electromagnetic clutch 40, and the second diode D2 is configured to bleed off the current in the corresponding second coil 41 of the electromagnetic clutch 40 when the first normally-open contact switch 32 corresponding to the relay 30 corresponding thereto is turned from on to off.
When the second coil 41 of the electromagnetic clutch 40 is energized, the corresponding second diode D2 is turned off. When the second coil 41 of the electromagnetic clutch 40 is electrically disconnected from the energized state, the corresponding second diode D2 is turned on, and the current in the second coil 41 of the electromagnetic clutch 40 is drained. If the first terminal N1 and the second terminal N2 of the power supply 10 in fig. 6 are set to be negative and positive, the positions of the cathodes and anodes of all the first diode D1 and the second diode D2 may be reversed.
Optionally, on the basis of the above embodiment, fig. 7 is a schematic cross-sectional structure diagram of a temperature-controlled switch provided by an embodiment of the present invention, and the contact switch unit 21 includes: bimetallic strip 201, transmission component 202, movable contact 203 and stationary contact 204, bimetallic strip 201 is connected with the movable contact through transmission component 202. The bimetallic strip 201 is used for expanding and bending gradually when the temperature of the cooling liquid of the engine cooling system is gradually increased to be higher than a first set temperature, so as to drive the movable contact 203 to be close to the fixed contact 204 gradually through the transmission component 202 until the movable contact is contacted, and the contact switch unit is changed from an off state to a conducting state; when the temperature of the cooling liquid of the engine cooling system is gradually reduced to be lower than the second set temperature, the contact switch unit is gradually contracted to drive the movable contact 203 to be gradually away from the fixed contact 204 through the transmission member 202 until the movable contact is separated, so that the contact switch unit is changed from the on state to the off state.
Fig. 7 exemplarily shows a case where there is one contact switch unit 21 in the thermo-switch. If the number of the contact switch units 21 in the thermostat is plural, the thermal expansion coefficients of the bimetallic strips of different contact switch units 21 may be different, so that different contact switch units 21 correspond to different temperature gears.
The embodiment of the utility model provides a vehicle. Fig. 8 is a schematic structural diagram of a vehicle according to an embodiment of the present invention. As shown in fig. 8, 1, and 2, the vehicle 100 includes: engine 1 and the cooling fan system that the utility model discloses arbitrary embodiment provided, engine 1 is connected with fan 50 through electromagnetic clutch 40, and engine 1 is used for providing power for fan 50 through electromagnetic clutch 40. The thermostat 20 is used to monitor the temperature of the coolant of the engine cooling system.
The engine 1 can also provide power for the running of the vehicle. The embodiment of the utility model provides a vehicle includes the cooling fan system in above-mentioned embodiment, consequently the embodiment of the utility model provides a vehicle also possesses the beneficial effect that the above-mentioned embodiment described, and this is no longer repeated here.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A cooling fan system, comprising:
a power source;
a temperature controlled switch including at least one contact switch unit;
the relays are arranged in one-to-one correspondence with the contact switch units of the temperature control switch and comprise first coils and first normally open contact switches, the contact switch units of the temperature control switch are connected in series with the first coils of the corresponding relays, and two ends of the contact switch units after being connected in series are respectively electrically connected with the first end and the second end of the power supply;
the second coils of the electromagnetic clutches and the relays are arranged in a one-to-one correspondence mode, the second coils of the electromagnetic clutches are connected with the first normally open contact switches of the corresponding relays in series, and two ends of the second coils after the second coils of the electromagnetic clutches are connected with the first end and the second end of the power supply respectively;
and the fan is connected with the electromagnetic clutch.
2. The cooling fan system according to claim 1, wherein the number of the contact switch units in the thermostat is two, and different contact switch units correspond to different temperature steps;
the number of the second coils of the electromagnetic clutch is two, the two second coils are respectively a large coil and a small coil, the large coil of the electromagnetic clutch is annular, the small coil of the electromagnetic clutch is annular, and the large coil and the small coil of the electromagnetic clutch are arranged in a concentric ring type;
the relay corresponding to the contact switch unit with the high temperature gear corresponds to the large coil of the electromagnetic clutch; and the relay corresponding to the contact switch unit with low temperature gear corresponds to the small coil of the electromagnetic clutch.
3. The cooling fan system as claimed in claim 2, wherein the relay corresponding to the contact switch unit with the high temperature range further comprises a second normally open contact switch connected in parallel with the first normally open contact switch of the relay corresponding to the contact switch unit with the low temperature range.
4. The cooling fan system of claim 1 further comprising an over-current protection element, a first end of the power source being electrically connected to a first end of the over-current protection element,
the contact switch unit of the temperature control switch is connected with the first coil of the corresponding relay in series, and two ends of the contact switch unit after being connected in series are respectively and electrically connected with the second end of the power supply and the second end of the overcurrent protection element;
and the second coil of the electromagnetic clutch is connected with the first normally-open contact switch of the corresponding relay in series, and two ends of the electromagnetic clutch after being connected in series are respectively and electrically connected with the second end of the power supply and the second end of the over-current protection element.
5. A cooling fan system in accordance with claim 4 wherein the over-current protection element comprises a fuse or a circuit breaker.
6. The cooling fan system according to claim 1, further comprising a first diode provided in correspondence with the relay, the first diode being connected in parallel with the first coil of the corresponding relay, the first diode being configured to bleed off a current in the first coil of the corresponding relay when the contact switch unit corresponding to the relay corresponding thereto changes from on to off.
7. The cooling fan system according to claim 1, further comprising a second diode provided in correspondence with the second coil of the electromagnetic clutch, the second diode being connected in parallel with the corresponding second coil of the electromagnetic clutch, the second diode being configured to bleed off a current in the corresponding second coil of the electromagnetic clutch when the first normally-open contact switch corresponding to the relay corresponding thereto changes from on to off.
8. The cooling fan system of claim 1, wherein the temperature controlled switch is a metal expansion temperature controlled switch.
9. The cooling fan system as claimed in claim 8, wherein the contact switch unit comprises: the bimetallic strip is connected with the movable contact through the transmission component.
10. A vehicle, characterized by comprising: an engine and a cooling fan system as claimed in any one of claims 1 to 9, the engine being connected to the fan via the electromagnetic clutch, the engine being arranged to power the fan via the electromagnetic clutch, the temperature controlled switch being arranged to monitor the temperature of the cooling fluid of the engine cooling system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022310048.6U CN213743650U (en) | 2020-10-16 | 2020-10-16 | Cooling fan system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022310048.6U CN213743650U (en) | 2020-10-16 | 2020-10-16 | Cooling fan system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213743650U true CN213743650U (en) | 2021-07-20 |
Family
ID=76851114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022310048.6U Active CN213743650U (en) | 2020-10-16 | 2020-10-16 | Cooling fan system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213743650U (en) |
-
2020
- 2020-10-16 CN CN202022310048.6U patent/CN213743650U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9206781B2 (en) | Auxiliary mesh type starter | |
| CN102934326B (en) | Power distribution system having priority load control | |
| CN104121129A (en) | Starter provided with electromagnetic solenoid integrating rush current suppression function | |
| US5614775A (en) | Two-speed direct-current motor with high-speed rotation switch activated by a vehicle sensed parameter signal | |
| US6249104B1 (en) | Cutout start switch heating | |
| US4385502A (en) | Defrost control device and method of operating such | |
| CN213743650U (en) | Cooling fan system and vehicle | |
| CN103457520A (en) | Motor system with a relay disconnecting start winding at voltage threshold | |
| WO2018020364A1 (en) | Voltage loss protection circuit and starting cabinet | |
| CN208812929U (en) | The control device of low starting current air-conditioning | |
| CN113266557B (en) | Active band-type brake system of polyester melt metering pump for chemical industry | |
| KR102261277B1 (en) | Cooling fan controller in engine room and controlling method thereof | |
| CN211335895U (en) | Wiper motor drive circuit | |
| CN113594494B (en) | Fuel cell heat dissipation device | |
| CN205618572U (en) | Drive clutch | |
| CN111555663B (en) | Motor start-stop system and method based on micro-motor action | |
| JP2023531488A (en) | Electromagnetic clutch control method in hybrid system and hybrid system | |
| CN112217424A (en) | Cooling fan of medium-voltage frequency converter cabinet and control device and method of air conditioner | |
| CN211508846U (en) | Three-phase motor drive circuit for temperature monitoring and die casting machine using same | |
| CN113503266B (en) | Direct current fan control system and direct current fan | |
| CN210292200U (en) | Air conditioner | |
| CN217979462U (en) | Control system capable of increasing delay starting of refrigerator | |
| CN214998144U (en) | Direct-current oil pump control system for lubricating and sealing shafting of turbonator | |
| CN218099996U (en) | Integrated controller of vehicle and vehicle | |
| CN105634121A (en) | Comprehensive protection switch automatic reclosing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |