CN216198438U - Expansion water tank with liquid level sensor - Google Patents

Abstract

The utility model belongs to the technical field of automobile parts, and particularly relates to an expansion water tank with a liquid level sensor. The expansion water tank with the liquid level sensor is characterized by comprising the liquid level sensor, a floater and a tank body, wherein a guide column is arranged at the bottom of the tank body, the guide column is hollow, a mounting hole is formed in the bottom of the guide column, the guide column extends upwards from the bottom of the tank body, the liquid level sensor is embedded into the guide column from the mounting hole, and the lower end of the liquid level sensor is fixedly connected to the guide column or the bottom of the tank body; the liquid level sensor and the box body are separated by the guide column, the floater is sleeved on the guide column, and when the floater moves up and down, the liquid level sensor can receive a floater position signal. The novel expansion water tank can ensure that the cooling liquid can stably run, and prevent water from vertically flowing into the water storage chamber and bringing gas into the water; the liquid level sensor is optimally designed, so that the generation of electrochemical reaction is avoided, the stability of the liquid level sensor in use is improved, and the service life is prolonged.

Description

Expansion water tank with liquid level sensor

Technical Field

The utility model belongs to the technical field of automobile parts, and particularly relates to an expansion water tank with a liquid level sensor.

Background

The expansion water tank is also called as auxiliary kettle and compensation water tank, and is one of the important parts of the water cooling system of the automobile engine. There are two circulation routes in the cooling system: large and small cycles. The major cycle is a circulation flow in which water passes through the radiator when the water temperature is high, and the minor cycle is a circulation flow in which water does not pass through the radiator when the water temperature is low. Currently, in the use process of automobiles, a cooling system is needed to cool an engine cylinder block, engine oil and transmission oil so as to ensure that the temperature of cooled parts is in a range with optimal performance. In the cooling system, the coolant is a medium responsible for heat transfer, and after absorbing heat from the cooled member, the heat is finally transferred to the environment through a heat-dissipating member such as a heat sink. Because the cooling liquid in the system can be heated and expanded at high temperature, and the volume of the cooling liquid is increased, an expansion water tank is required to bear part of the cooling liquid overflowing due to the increase of the volume in the system; however, when the cooling temperature is lowered, the volume of the coolant is contracted, and at this time, the coolant overflowing into the expansion tank is returned to the cooling line. In addition, a filling port on the expansion tank of the automobile is directly communicated with a water outlet chamber in the expansion tank, so that water flows into the water storage chamber vertically, gas is easily brought into the water, the gas is easily stirred or splashed, and the pressure balance in the system and the discharge of the gas in the system are not facilitated. The most important shortcoming is that the expansion tank liquid level switch adopts a bimetallic strip form, and the working principle is as follows: the liquid level switch is located expansion tank lower extreme, and pencil connector lug connection utilizes the electric conductivity of coolant liquid to judge whether current liquid level is crossed lowly on the liquid level switch. When the liquid level is normal, the metal pole piece is immersed in the cooling liquid, and the on-resistance is about 160k omega; when the liquid level is too low, the metal pole piece leaks from the cooling liquid and is in a suspended state, and the alarm condition is achieved. However, the liquid level switch is composed of two sections of metal pole pieces, and because a sampling interface circuit applies a certain voltage to the expansion water tank all the time, the electrochemical reaction in the expansion water tank is presumed to occur, so that impurities are accumulated on the metal pole pieces, the conductivity is influenced, and false alarm is caused.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the expansion water tank with the liquid level sensor.

The utility model provides an expansion water tank with a liquid level sensor, which comprises the liquid level sensor, a floater and a tank body, wherein the bottom of the tank body is provided with a guide post, the guide post is hollow, the bottom of the guide post is provided with a mounting hole, the guide post extends upwards from the bottom of the tank body, the liquid level sensor is embedded into the guide post from the mounting hole, and the lower end of the liquid level sensor is fixedly connected to the guide post or the bottom of the tank body; the liquid level sensor and the box body are separated by the guide column, the guide column is sleeved with the floater, and when the floater moves up and down, the liquid level sensor can receive a floater position signal.

Preferably, the guide post still includes the stopper, stopper fixed connection be in guide post upper end tip is provided with the stopper, the stopper with the float is cyclic annular and the stopper diameter is greater than the diameter of float, the stopper is to float rebound plays limiting displacement.

Preferably, the floater is a magnetic ring, and the liquid level sensor is a reed switch or a Hall sensor.

Preferably, the box body and the guide post are integrally formed or welded, the guide post is a cylinder, and the floater is in a ring shape.

Preferably, a controller is further arranged, and the controller receives signals of the liquid level sensor, controls the instrument panel to display liquid level information of the cooling liquid according to the signals of the liquid level sensor and/or controls the warning device to send warning information.

Preferably, the box body comprises an upper box body and a lower box body matched with the upper box body, the upper box body and the lower box body are both hemispherical, a sphere is formed when the upper box body and the lower box body are matched, and the guide column is arranged at the bottom of the lower box body.

Preferably, the expansion tank with the liquid level sensor comprises a cooling liquid inlet and a cooling liquid outlet, the cooling liquid inlet is arranged at the upper end of the upper tank body, and the cooling liquid outlet is arranged at the lower end of the lower tank body.

Preferably, take level sensor's expansion tank still includes the expansion tank lid, the lower extreme periphery of expansion tank lid is provided with the external screw thread, it is provided with the filling opening to go up box upper end tip, the filling opening be provided with external screw thread matched with internal thread.

Preferably, a cross reinforcing rib plate is arranged in the box body, and a through hole is arranged on the reinforcing rib plate.

Preferably, the box body is made of a translucent material PP or PA, and liquid level scale marks are further engraved on the outer surface of the box body.

According to the expansion water tank with the liquid level sensor, the cooling liquid inlet and the cooling liquid outlet are arranged on the tank body in a staggered mode, so that the novel expansion water tank with the cooling liquid capable of running stably is ensured, and water is prevented from flowing into a water storage chamber vertically and gas is prevented from being brought into the water; the liquid level sensor is optimally designed, so that the generation of electrochemical reaction is avoided, the stability of the liquid level sensor in use is improved, and the service life is prolonged.

Drawings

The foregoing and other objects, features and advantages of the utility model will be apparent from the following more particular description of preferred embodiments of the utility model, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the utility model.

FIG. 1 is a schematic structural diagram of an expansion tank provided in an embodiment of the present invention;

fig. 2 is an exploded view of an expansion tank according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a liquid level sensor portion according to an embodiment of the present invention.

In the figure: the expansion water tank comprises an expansion water tank cover 1, a cooling liquid inlet 2, an upper tank body 3, liquid level scale marks 4, a lower tank body 5, a cooling liquid outlet 6 and a liquid level sensor 7; a limiting block 501, a guide column 502, a floater 701 and a Hall sensor 702.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, the present invention provides an expansion tank with a liquid level sensor 7, which includes a liquid level sensor 7, a float 701 and a tank body, wherein a guide column 502 is disposed at the bottom of the tank body, the guide column 502 is hollow and has a mounting hole at the bottom, the guide column 502 extends upward from the bottom of the tank body, the liquid level sensor 7 is embedded into the guide column 502 from the mounting hole, and the lower end of the liquid level sensor 7 is fixedly connected to the guide column 502 or the bottom of the tank body; the guide column 502 separates the liquid level sensor 7 from the tank body, the float 701 is sleeved on the guide column 502, and when the float 701 moves up and down, the liquid level sensor 7 can receive a position signal of the float 701. In the present application, reference is made above and below to the expansion tank in use, with the upper tank body 3 being referred to above. The guide column 502 separating the level sensor 7 from the tank means that the level sensor 7 is separated by the guide column 502 in use so that the level sensor 7 does not contact the cooling liquid of the tank. The liquid level sensor 7 is optimally designed, so that the generation of electrochemical reaction is avoided, the stability of the liquid level sensor 7 in use is improved, and the service life is prolonged.

In a preferred embodiment, the guide column 502 further comprises a limiting block 501, the limiting block 501 is fixedly connected to the upper end of the guide column 502 and provided with the limiting block 501, the limiting block 501 and the float 701 are both annular, the diameter of the limiting block 501 is larger than that of the float 701, and the limiting block 501 limits the upward movement of the float 701. Further, the floater 701 is a magnetic ring, and the liquid level sensor 7 is a reed switch or a hall sensor 702. Further, the box body and the guide column 502 are integrally formed or welded, the guide column 502 is a cylinder, and the float 701 is circular. The design of the limiting block 501 limits the range of the float 701 floating up and down, ensures that the float 701 cannot be clamped or fall off in the floating process, and has high reliability.

In a preferred embodiment, a controller is further arranged, and the controller receives the signal of the liquid level sensor 7 and controls the instrument panel to display the liquid level information of the cooling liquid and/or controls the alarm to send out alarm information according to the signal of the liquid level sensor 7. Through controller and panel board setting, can learn coolant liquid level information in real time, further, the attention device includes light siren and sound siren etc. through the attention device setting, can in time remind the low liquid level alarm of relevant personnel coolant liquid.

In the preferred embodiment, the box body comprises an upper box body 3 and a lower box body 5 which can be matched with the upper box body 3, the upper box body 3 and the lower box body 5 are both hemispheres and form a sphere when being matched, and the guide column 502 is arranged at the bottom of the lower box body 5. Further, in the preferred embodiment, the expansion tank with the level sensor 7 includes a coolant inlet 2 provided at the upper end of the upper tank 3 and a coolant outlet 6 provided at the lower end of the lower tank 5. Furthermore, the cooling liquid inlet 2 and the cooling liquid outlet 6 are arranged on the box body in a staggered mode, and cooling liquid can flow into the expansion water tank from the cooling liquid inlet 2 and flow out from the cooling liquid outlet 6. Through the arrangement, the novel expansion water tank with the cooling liquid capable of running stably is ensured, and water is prevented from flowing into the water storage chamber vertically and bringing gas into the water.

In a preferred embodiment, the expansion tank with the liquid level sensor 7 further comprises an expansion tank cover 1, wherein the periphery of the lower end of the expansion tank cover 1 is provided with an external thread, the upper end part of the upper tank body 3 is provided with a liquid filling port, and the liquid filling port is provided with an internal thread matched with the external thread. Furthermore, the expansion water tank is also provided with an elastic sealing ring, the top surface and the bottom surface of the elastic sealing ring are provided with annular stripes along the circumferential direction, the lower end of the expansion water tank cover 1 and the upper end part of the upper tank body 3 are both provided with annular grooves matched with the annular stripes, and when the liquid adding opening is matched with the expansion water tank cover 1, the lower end of the expansion water tank cover 1 and the upper end of the upper tank body 3 are respectively abutted against the top surface and the bottom surface of the elastic sealing ring. The expansion water tank cover 1 is used for sealing cooling liquid in a water tank, and when the liquid needs to be added, the cooling liquid can be poured into the expansion water tank cover 1 in a rotating mode. The expansion tank structure is optimized and the operation is more convenient. The sealing effect of the expansion water tank cover 1 is better through the arrangement of the elastic sealing ring.

In a preferred embodiment, a cross reinforcing rib plate is arranged in the box body, and a through hole is arranged on the reinforcing rib plate. The setting of deep floor plays the supporting role to expansion tank inside, and the deep floor improves expansion tank's intensity, and the setting of through-hole, expansion tank form rivers passageway and air current channel when using, can realize the inside aqueous vapor separation of expansion tank, reinforcing degassing effect

In the preferred embodiment, the box body is made of translucent materials PP or PA, and liquid level scale marks 4 are carved on the outer surface of the box body. Through the arrangement, the height of the liquid level can be directly and conveniently observed through the tank body and the liquid level scale marks 4 without opening the expansion tank cover 1.

According to the expansion water tank with the liquid level sensor 7, the cooling liquid inlet 2 and the cooling liquid outlet 6 are arranged on the tank body in a staggered mode, so that the novel expansion water tank with the cooling liquid capable of running stably is guaranteed, and water is prevented from flowing into a water storage chamber vertically and gas is prevented from being brought into the water; the liquid level sensor 7 is optimally designed, so that the generation of electrochemical reaction is avoided, the stability of the liquid level sensor 7 in use is improved, and the service life is prolonged.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The expansion water tank with the liquid level sensor is characterized by comprising the liquid level sensor, a floater and a tank body, wherein a guide column is arranged at the bottom of the tank body, the guide column is hollow, a mounting hole is formed in the bottom of the guide column, the guide column extends upwards from the bottom of the tank body, the liquid level sensor is embedded into the guide column from the mounting hole, and the lower end of the liquid level sensor is fixedly connected to the guide column or the bottom of the tank body; the liquid level sensor and the box body are separated by the guide column, the guide column is sleeved with the floater, and when the floater moves up and down, the liquid level sensor can receive a floater position signal.

2. The expansion tank with the liquid level sensor as claimed in claim 1, wherein the guide post further comprises a limiting block, the limiting block is fixedly connected to the upper end of the guide post and provided with a limiting block, the limiting block and the float are both annular, the diameter of the limiting block is larger than that of the float, and the limiting block limits the upward movement of the float.

3. The expansion tank with the liquid level sensor as claimed in claim 1, wherein the float is a magnetic ring, and the liquid level sensor is a reed switch or a hall sensor.

4. The expansion tank with the liquid level sensor as claimed in claim 1, wherein the tank body and the guide post are integrally formed or welded, the guide post is a cylindrical body, and the float is a circular ring.

5. The expansion tank with the liquid level sensor as claimed in claim 1, wherein a controller is further provided, the controller receives the signal of the liquid level sensor and controls the instrument panel to display the liquid level information of the cooling liquid and/or controls the alarm to give out the alarm information according to the signal of the liquid level sensor.

6. The expansion tank with the liquid level sensor as claimed in claim 1, wherein the tank body comprises an upper tank body and a lower tank body which can be matched with the upper tank body, the upper tank body and the lower tank body are both hemispherical and form a sphere when matched, and the guide column is arranged at the bottom of the lower tank body.

7. The expansion tank with the liquid level sensor as claimed in claim 6, further comprising a cooling liquid inlet provided at an upper end of the upper tank and a cooling liquid outlet provided at a lower end of the lower tank.

8. The expansion tank with the liquid level sensor as claimed in claim 6, further comprising an expansion tank cover, wherein the expansion tank cover is provided with external threads on the periphery of the lower end thereof, and the upper end of the upper tank body is provided with a filling opening, and the filling opening is provided with internal threads matched with the external threads.

9. The expansion tank with the liquid level sensor according to claim 1, wherein a cross reinforcing rib is arranged in the tank body, and a through hole is arranged on the reinforcing rib.

10. The expansion tank with the liquid level sensor as claimed in claim 1, wherein the tank body is made of a translucent material PP or PA, and liquid level scale marks are engraved on the outer surface of the tank body.

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