An air intake resistant expansion tank

Abstract

The application discloses an air intake resistant expansion water tank, which is used for improving the degassing performance of a cooling system and improving the normal operation reliability of the cooling system. The expansion water tank comprises an expansion water tank body and a water blocking piece, the expansion water tank body is internally hollow, the bottom of the expansion water tank body is provided with a water outlet, the water outlet is connected with the water blocking piece, the water blocking piece comprises an upper water blocking piece body and a lower water blocking piece body, the upper water blocking piece body and the lower water blocking piece body are integrally formed, the upper water blocking piece body is arranged in the interior of the expansion water tank body, the top of the upper water blocking piece body is provided with a blocking plate, the periphery of the upper water blocking piece body is provided with a plurality of through holes, the through holes are used for leading out the cooling liquid in the expansion water tank body to the lower water blocking piece body, the lower water blocking piece body is arranged outside the expansion water tank body, the top of the lower water blocking piece body is communicated with the upper water blocking piece body, and the bottom of the lower water blocking piece body is communicated with a water pump connecting pipeline of a water pump connected with an engine.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of expansion water tank, in particular to an anti-air expansion water tank. BACKGROUND

[0002] The expansion water tank is a container for filling and compensating liquid in the cooling system, which compensates the liquid lost in the cooling process, and discharges the gas generated in the system through the pressure relief port to keep the system pressure stable.

[0003] In the prior art, the water outlet of the expansion water tank is usually a through-hole structure, which is designed at the bottom of the expansion water tank and connected to the inlet position of the engine water pump through a connecting pipeline, so that the cooling liquid after liquid-gas separation enters the connecting pipeline and returns to the engine water pump through the water outlet. For example, in a patent No. CN201520159867.1, a water filling device for expansion water tank of a passenger car is provided, which includes an expansion water tank, a liquid level display is arranged on one side of the expansion water tank, a detachable expansion water tank water filling port is arranged on the other side of the expansion water tank, and a liquid level sensor and a water outlet are arranged at the bottom of the expansion water tank.

[0004] However, the expansion water tank is usually arranged at the highest position of the engine, and the water filling position is the lowest point of the expansion water tank. During the working process, when the cooling liquid level in the expansion water tank is low, the cooling liquid in the air cavity region of the expansion water tank may flow into the engine through the large-diameter water outlet with a through-hole structure and the connecting pipeline, and the cooling liquid in the expansion water tank may generate vortex at the water outlet, which may cause air to be sucked into the water pump inlet, thereby affecting the reliability of the entire cooling system. SUMMARY

[0005] In order to solve the above problems, the present application provides an anti-air expansion water tank, which can reduce the possibility of air entering the engine water pump and improve the reliability of the entire cooling system.

[0006] The anti-air expansion water tank provided by the present application comprises:

[0007] The expansion water tank body is an internal cavity structure;

[0008] The bottom of the expansion water tank body is provided with a water outlet, and the water outlet is connected with the water blocking piece;

[0009] The water blocking piece comprises an upper body and a lower body, and the upper body and the lower body are integrally formed;

[0010] The water blocking upper body is arranged inside the expansion water tank body, the top of the water blocking upper body is provided with a blocking plate, the circumferential sidewall of the water blocking upper body is provided with a plurality of through holes for leading out the cooling liquid in the expansion water tank body to the water blocking lower body through the through holes;

[0011] The water blocking lower body is located outside the expansion water tank body, the top of the water blocking lower body is communicated with the water blocking upper body, and the bottom of the water blocking lower body is communicated with the water pump connecting pipeline of the engine water pump.

[0012] Optionally, the water outlet includes a water outlet pipeline with a preset length extending outside the expansion water tank body.

[0013] The water blocking lower body is located in the water outlet pipeline, and the water inlet of the engine water pump is communicated through the water outlet pipeline and the water pump connecting pipeline.

[0014] Optionally, the blocking plate includes a blocking straight plate and an inclined side plate.

[0015] The diameter of the blocking straight plate is greater than the diameter of the water blocking upper body, and the blocking straight plate is in abutment with the top wall of the water blocking upper body.

[0016] The inclined side plate is connected with the sidewall of the blocking straight plate, and the inclined side plate is inclined towards the water outlet.

[0017] Optionally, the blocking straight plate is a ring-shaped blocking straight plate, and the blocking plate is axially symmetrical about the water blocking body.

[0018] Optionally, the plurality of through holes are arranged at intervals on the circumferential sidewall of the water blocking upper body, and the through holes are circular through holes.

[0019] Optionally, the top of the expansion water tank body is provided with a water tank cover.

[0020] Optionally, the water blocking body and the expansion water tank body are integrally formed.

[0021] Optionally, the water blocking body and the water outlet of the expansion water tank body are sealed and connected by welding.

[0022] Optionally, the water blocking body and the water outlet of the expansion water tank body are detachably connected.

[0023] Optionally, the water outlet is arranged close to the center position of the bottom of the expansion water tank body.

[0024] From the above technical solutions, the present application has the following advantages:

[0025] The expansion water tank provided by the application comprises an expansion water tank body and a water blocking member, wherein the expansion water tank body is internally hollow; a water outlet is arranged at the bottom of the expansion water tank body, and the water outlet is connected with the water blocking member. The water blocking member comprises a water blocking member upper body and a water blocking member lower body, and the two are integrally formed. The water blocking member upper body is arranged inside the expansion water tank body, a blocking plate is arranged at the top of the water blocking member upper body, and a plurality of through holes are arranged on the circumferential sidewall of the water blocking member upper body. The water blocking member lower body is arranged outside the expansion water tank body, the top of the water blocking member lower body is communicated with the water blocking member upper body, and the bottom of the water blocking member lower body is communicated with a connecting pipeline connected with the water pump of the engine.

[0026] The expansion water tank provided by the application is provided with a water blocking member at the water outlet, a blocking plate is arranged at the top of the water blocking member, and the cooling liquid inside the expansion water tank is led out to the water pump of the engine through the plurality of through holes on the sidewall of the water blocking member, so that the flow rate of the cooling liquid inside the expansion water tank when flowing to the water outlet is reduced, and the possibility of vortex and air entrainment is reduced. At the same time, the flow direction of the cooling liquid in the expansion water tank is adjusted, so that the cooling liquid flows down along the inner wall when flowing out of the water outlet, the steam in the cooling liquid is quickly condensed into water and introduced into the water pump of the engine, the deaeration performance of the cooling system is improved, and the normal operation reliability of the cooling system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 An embodiment of the anti-air intake expansion water tank provided by the application is shown in the perspective structural schematic diagram;

[0028] Fig. 2 An embodiment of the anti-air intake expansion water tank provided by the application is shown in the sectional structural schematic diagram;

[0029] Fig. 3 An embodiment of the expansion water tank body in the anti-air intake expansion water tank provided by the application is shown in the sectional structural schematic diagram;

[0030] Fig. 4 An embodiment of the water blocking member in the anti-air intake expansion water tank provided by the application is shown in the sectional structural schematic diagram.

[0031] In the drawings, various marks represent the following: 1: expansion water tank body, 11: water outlet, 12: water outlet pipeline, 2: water blocking member, 21: water blocking member upper body, 22: water blocking member lower body, 23: blocking plate, 231: blocking straight plate, 232: inclined side plate, 24: through hole, 3: water tank cover. DETAILED DESCRIPTION

[0032] The application provides an air intake resistant expansion water tank, which is used for reducing the flow rate of the cooling liquid in the expansion water tank when flowing to the water outlet, and reducing the possibility of vortex air entrainment. Meanwhile, the flow direction of the cooling liquid in the expansion water tank is adjusted, so that the cooling liquid flows down along the inner wall when flowing out of the water outlet, the steam in the cooling liquid is rapidly condensed into water and introduced into the engine water pump, the deaeration performance of the cooling system is improved, and the normal operation reliability of the cooling system is improved.

[0033] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to illustrate the relative positional relationship between the components or constituent parts, and do not particularly limit the specific installation orientation of the components or constituent parts.

[0034] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned partial terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0035] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be understood broadly. For example, it can be fixed connection, detachable connection, or integral structure; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or constituent parts. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific situation.

[0036] In addition, the structure, proportion, size and the like shown in the drawings in the present application are only used to cooperate with the disclosed content of the specification, so that those skilled in the art can understand and read, and do not have technical substantive significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and the purpose that can be achieved by the present application, still falls within the scope of the technical content disclosed by the present application.

[0037] In addition, the terms "first", "second", "third" and the like (if any) in the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the terms thus used can be interchanged as appropriate, so that the embodiments described in the present application can be implemented in an order other than that illustrated or described herein.

[0038] The technical solutions in the present application will be clearly and completely described in combination with the drawings in the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of the present application.

[0039] Please refer to Figs. 1 to 4 The anti-air intake expansion water tank provided by the present application comprises:

[0040] The expansion water tank body 1 is internally hollow, and the bottom of the expansion water tank body 1 is provided with a water outlet 11 connected with the water blocking member 2. The water blocking member 2 comprises a water blocking member upper body 21 and a water blocking member lower body 22, which are integrally formed. The water blocking member upper body 21 is arranged inside the expansion water tank body 1, the top of the water blocking member upper body 21 is provided with a blocking plate 23, and the circumferential sidewall of the water blocking member upper body 21 is provided with a plurality of through holes 24 for leading the cooling liquid in the expansion water tank body 1 out to the water blocking member lower body 22 through the through holes 24. The water blocking member lower body 22 is located outside the expansion water tank body 1, the top thereof is communicated with the water blocking member upper body 21, and the bottom thereof is communicated with a water pump connecting pipeline connected with the water pump.

[0041] The expansion water tank is an important component in the engine cooling system, which functions to accommodate and compensate the expansion and contraction of water in the system, and also serves as a water supply for the system. Generally, the expansion water tank is arranged at the highest point of the system, and then connected to the water pump inlet position through the water pump connecting pipeline (circulating pipeline) to realize the functions of filling and liquid supplementing. It should be noted that the specific structure of the expansion water tank body 1 is the prior art, which will not be described in detail here. For example, the expansion water tank body 1 can be a cylindrical tank, a cuboid tank or a square tank, which is not limited here.

[0042] The water outlet 11 is arranged near the center of the bottom of the expansion water tank body 1, so that the water pump connecting pipeline is arranged at the central position of the bottom of the expansion water tank body 1 and communicated with the water blocking member 2 arranged at the water outlet 11 of the bottom of the expansion water tank body 1. The top of the expansion water tank body 1 is further provided with a water tank cover 3, which can balance the internal and external pressures of the tank when the internal pressure of the expansion water tank body 1 is relatively large by opening the water tank cover 3.

[0043] The water blocking piece 2 includes an integrally formed water blocking piece upper body 21 and a water blocking piece lower body 22. The water blocking piece upper body 21 is located inside the expansion water tank body 1 and has a preset height from the inner bottom wall of the expansion water tank body 1. In addition, the water blocking piece 2 and the expansion water tank body 1 can be integrally formed. That is, the water blocking piece 2 is part of the integral casting of the expansion water tank body 1. For example, the water blocking piece 2 and the water outlet 11 of the expansion water tank body 1 can be sealed and connected by welding to reduce costs and improve the sealing between the water outlet 11 and the water blocking piece 2. Alternatively, the water blocking piece 2 can be embedded into the expansion water tank body 1 as an active tool, that is, the water blocking piece 2 and the water outlet 11 of the expansion water tank body 1 can be detachably connected to facilitate disassembly, maintenance.

[0044] Compared with the prior art, when the cooling liquid completing liquid-gas separation enters the water pump connection pipeline through the water outlet and returns to the engine water pump inlet position, the large-diameter water outlet and the water pump connection pipeline cause vortex of the cooling liquid level in the expansion water tank, which causes air to be sucked into the entire cooling system. In the embodiment of the present application, without changing the internal structure of the expansion water tank body 1, a water blocking piece 2 is added at the water outlet 11 of the expansion water tank body 1, and a blocking plate 23 is arranged at the top of the water blocking piece 2. The blocking plate 23 prevents the cooling liquid from flowing downward to cause vortex and suck air into the water pump, and at the same time, the cooling liquid in the tank is introduced into the water pump connection pipeline through the multiple through holes 24 of the side wall of the water blocking piece upper body 21. The flow rate of the high-temperature cooling liquid flowing into the air cavity area inside the expansion water tank is reduced, the formation of vortex is reduced, the air sucked into the cooling liquid is reduced, and the flow direction of the high-temperature cooling liquid is adjusted to flow along the inner wall, so that the steam in the high-temperature cooling liquid is quickly condensed into water, and the deaeration performance of the cooling system is improved.

[0045] Optionally, the water outlet 11 includes a water outlet pipeline 12 extending outside the expansion water tank body 1 and having a preset length; the water blocking piece lower body 22 is located in the water outlet pipeline 12, and the water outlet pipeline 12 and the water pump connection pipeline are connected to the water inlet of the engine water pump.

[0046] In the embodiment, a water outlet pipeline 12 with a certain length is extended from the lower end of the water outlet 11, and the water blocking piece 2 is arranged in the water outlet pipeline 12. The cooling liquid is introduced into the water pump through the water outlet pipeline 12 and the water pump connection pipeline, instead of directly flowing out through the original pipeline, which further reduces the risk of air being sucked in due to the downward flow of the liquid level.

[0047] Optionally, the blocking plate 23 includes a blocking straight plate 231 and an inclined side plate 232. The diameter of the blocking straight plate 231 is greater than the diameter of the water blocking piece upper body 21, and the blocking straight plate 231 abuts against the top wall of the water blocking piece upper body 21. The inclined side plate 232 is connected to the side wall of the blocking straight plate 231 and is inclined toward the water outlet 11.

[0048] In the embodiment, the blocking plate 23 is symmetric about the axial direction of the water blocking member 2. The blocking straight plate 231 is annular or square, which is not limited herein. The blocking straight plate 231 is arranged at the top center of the upper body 21 of the water blocking member 2 and extends along the transverse direction of the water blocking member 2. The edge of the blocking straight plate 231 is provided with an inclined side plate 232 which is inclined to the blocking straight plate 231. The inclined side plate 232 is used to block the cooling liquid to avoid the cooling liquid flowing directly from the top of the upper body 21 of the water blocking member 2 into the water pump connecting pipeline. At the same time, the cooling liquid is deflected by the inclined side plate 232 to reduce the flow rate of the cooling liquid and reduce the air suction of the engine water pump, thereby increasing the reliability of the water pump.

[0049] Optionally, a plurality of through holes 24 are arranged at intervals on the four side walls of the upper body 21 of the water blocking member.

[0050] In the embodiment, the through hole 24 can be a circular through hole 24, a square through hole 24 or a rhombic through hole 24, which is not limited herein. The plurality of through holes 24 are arranged at intervals on the four side walls of the upper body 21 of the water blocking member 2 and are symmetrically arranged in the transverse and longitudinal directions, so that the cooling liquid flowing along the inner wall after passing through the through hole 24 flows into the water blocking member 2 from the four sides at the same time. This can realize the rapid condensation of steam in high-temperature cooling liquid into water and reduce the air suction of the cooling liquid.

[0051] In addition, in the embodiment, the height of the lowermost circle of the plurality of through holes 24 is spaced apart from the bottom wall of the expansion tank by a predetermined height, so that when the amount of cooling liquid in the expansion tank is small, a certain amount of cooling liquid can be reserved in the expansion tank, which can reduce the possibility of air suction of the engine water pump and improve the reliability of the cooling system.

[0052] It should be noted that the above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An expansion tank resistant to air ingress, characterized in that, The expansion tank includes: The expansion tank body and the water-blocking component, wherein the expansion tank body has an internal cavity structure; The bottom of the expansion tank body is provided with a water outlet, which is connected to the water-blocking component; The water-blocking component includes an upper body and a lower body, and the upper body and the lower body are integrally formed. The upper body of the water-blocking component is located inside the body of the expansion tank. The top of the upper body of the water-blocking component is provided with a baffle plate. The four sides of the upper body of the water-blocking component are provided with several through holes for leading the coolant in the body of the expansion tank out to the lower body of the water-blocking component through the through holes. The lower part of the water-blocking component is located outside the body of the expansion tank, the top of which is connected to the upper part of the water-blocking component, and the bottom of which is connected to the water pump connection pipe of the engine water pump.

2. The expansion tank according to claim 1, characterized in that, The outlet includes a water pipe of a predetermined length that extends outside the expansion tank body; The lower part of the water-blocking component is located inside the water outlet pipe, and is connected to the inlet of the engine water pump through the water outlet pipe and the water pump connecting pipe.

3. The expansion tank according to claim 1, characterized in that, The barrier plate includes a straight barrier plate and an inclined side plate; The diameter of the barrier plate is larger than the diameter of the upper body of the water-blocking component, and the barrier plate abuts against the top wall of the upper body of the water-blocking component; The inclined side plate is connected to the side wall of the barrier plate, and the inclined side plate is inclined toward the water outlet.

4. The expansion tank according to claim 3, characterized in that, The barrier plate is an annular barrier plate, and the barrier plate is symmetrical about the water-blocking component.

5. The expansion tank according to claim 1, characterized in that, The plurality of through holes are evenly distributed at intervals on the four sides of the upper body of the water-blocking component, and the through holes are circular through holes.

6. The expansion tank according to claim 1, characterized in that, The expansion tank body is equipped with a tank cover on top.

7. The expansion tank according to any one of claims 1 to 6, characterized in that, The water-blocking component and the expansion tank body are integrally formed.

8. The expansion tank according to claim 7, characterized in that, The water-blocking component is sealed to the outlet of the expansion tank body by welding.

9. The expansion tank according to any one of claims 1 to 6, characterized in that, The water-blocking component is detachably connected to the outlet of the expansion tank body.

10. The expansion tank according to any one of claims 1 to 6, characterized in that, The outlet is located near the center of the bottom of the expansion tank body.

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