A device and method for degassing an expansion tank

Abstract

The invention discloses a device and method for degassing an expansion water tank, comprising a degassing pipe and an expansion water tank, wherein the front end of the degassing pipe extends into the expansion water tank for a certain length, the pipe body of the degassing pipe extending into the expansion water tank serves as an insertion end, and the pipe body exposed outside the expansion water tank serves as a connecting end; the insertion end is provided with a speed regulating and guiding structure. The invention has the advantages of simple structure, easy improvement, low cost, etc.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle cooling systems, and in particular to a device and method for degassing an expansion water tank. Background Art

[0002] The expansion tank is an important component in the vehicle cooling system. Its function is to accommodate and compensate for the expansion and contraction of the coolant in the system, separate the coolant mixed with gas into liquid and gas, and can also be used as a water supply for the cooling system. The expansion tank is usually located at the highest point of the system, and the expansion tank water supply pipe is usually connected to the water inlet of the circulating water pump.

[0003] At present, the degassing interface of the vehicle expansion water tank is directly connected to the inside of the expansion water tank and is located on the upper part of the expansion water tank. The high-temperature coolant passes through the degassing pipe and enters the air cavity area inside the expansion water tank and directly falls onto the liquid surface, causing a large amount of air to be drawn into the coolant with the water flow. At the same time, after flowing into the air cavity area inside the expansion water tank, it directly falls into the coolant and cannot achieve rapid condensation of steam. This results in the inability to complete the degassing of the vehicle cooling system.

[0004] Compared with proposal CN211370533U, this proposal only needs to add the device to the existing expansion water tank without changing the internal structure of the expansion water tank. This proposal mainly adds a device to reduce the flow rate and direction of the coolant inside the degassing port of the existing expansion water tank, so as to reduce the flow rate of the high-temperature coolant flowing into the internal air cavity area of ​​the expansion water tank, reduce the air drawn into the coolant, and adjust the flow direction of the high-temperature coolant so that it flows down along the inner wall of the expansion water tank, so as to realize the rapid condensation of the steam in the high-temperature coolant into water and increase the degassing performance of the cooling system.

[0005] The disclosure of the above background technology content is only used to assist in understanding the concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of the present application. Summary of the invention

[0006] The purpose of the present invention is to propose a device and method for degassing an expansion water tank. The device and method for degassing an expansion water tank have a simple structure and only require minor changes to the structure of a degassing pipe. There is no need to improve the structure of the expansion water tank. The improvement is simple and low-cost, and the degassing effect of the improved degassing pipe is significantly improved.

[0007] To this end, the present invention provides a device and method for degassing an expansion water tank.

[0008] Preferably, the present invention may also have the following technical features:

[0009] A water replenishing method for reducing the gas content of an expansion water tank changes the flow rate and flow direction of a coolant entering the expansion water tank so that the coolant entering the expansion water tank flows down along the inner wall of the expansion water tank.

[0010] A device for adjusting the flow rate and direction of coolant at the end of a degassing pipe of an expansion water tank comprises a degassing pipe and an expansion water tank. The front end of the degassing pipe extends into the expansion water tank for a certain length, the pipe body of the degassing pipe extending into the expansion water tank serves as the insertion end, and the pipe body exposed outside the expansion water tank serves as the connecting end; the insertion end is provided with a speed regulating and diverting structure.

[0011] Furthermore, drainage holes are provided on the side surface and / or the front end surface of the degassing pipe extension end to form the speed regulating and guiding structure.

[0012] Furthermore, there are a plurality of drainage holes.

[0013] Furthermore, the center points of the drainage holes opened on the side of the insertion end are arranged along one of the busbars of the insertion end or on both sides adjacent to the same busbar.

[0014] Furthermore, the front end surface of the degassing pipe extending into the end is sealed.

[0015] Furthermore, a drainage hole is provided on the front end surface of the insertion end, and the diameter of the drainage hole provided on the front end surface of the insertion end is smaller than the diameter of the degassing pipe.

[0016] Furthermore, the degassing pipe is detachably connected to the expansion water tank.

[0017] A method for using a device for adjusting the flow rate and direction of coolant at the end of a degassing pipe of an expansion water tank, comprising: adjusting the diameter and / or number of drainage holes in the degassing pipe according to the water outlet flow requirement at the end of the degassing pipe; rotating the degassing pipe to adjust the direction of the drainage holes according to the opening position of the drainage holes at the end of the degassing pipe so that the drainage holes are directed toward and close to the inner wall of the expansion water tank; after determining the direction of the drainage holes, assembling the degassing pipe to the expansion water tank in a detachable manner.

[0018] A degassing pipe used in a vehicle expansion water tank, wherein a side surface and / or a front end surface of one end of the degassing pipe is provided with a drainage hole to form the speed regulating and diverting structure.

[0019] The beneficial effects of the present invention compared with the prior art include: by providing a speed regulating and guiding structure, the flow rate of the coolant flowing into the expansion water tank through the speed regulating and guiding structure is reduced and the flow direction of the coolant is changed, thereby reducing the flow rate of the high-temperature coolant flowing into the internal air cavity area of ​​the expansion water tank, reducing the air drawn into the coolant of the expansion water tank, and adjusting the flow direction of the high-temperature coolant through the drainage hole so that it flows down along the inner wall of the expansion water tank, thereby realizing the rapid condensation of the steam in the high-temperature coolant into water and increasing the degassing performance of the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 1 is a top view of the degassing pipe of the present invention.

[0022] Figure 3 It is a side view of the degassing pipe of the present invention.

[0023] Description of reference numerals:

[0024] 1. Degassing pipe; 2. Drain hole; 3. Expansion tank. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below in conjunction with specific implementations and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope of the present invention and its application.

[0026] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein like reference numerals refer to like parts unless otherwise specifically stated.

[0027] A water replenishment method for reducing the gas content of an expansion water tank changes the flow rate and flow direction of the coolant entering the expansion water tank 3 so that the coolant entering the expansion water tank flows down along the inner wall of the expansion water tank. When the existing coolant enters the expansion water tank, the newly entered coolant is injected into the liquid surface of the expansion water tank in a column, which causes the newly entered coolant to be injected into the liquid of the expansion water tank with more air, resulting in poor gas-liquid separation effect. This embodiment reduces the flow rate of the coolant entering the expansion water tank and allows the newly entered coolant to flow down along the inner wall of the expansion water tank, thereby achieving rapid condensation of steam in the high-temperature coolant into water, increasing the degassing performance of the cooling system, and significantly improving the gas-liquid separation effect.

[0028] like Figures 1 to 3The device shown is for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion water tank, comprising a degassing pipe 1 and an expansion water tank 3. The front end of the degassing pipe 1 extends into the expansion water tank 3 for a certain length, the pipe body of the degassing pipe 1 extending into the expansion water tank 3 serves as the insertion end, and the pipe body exposed outside the expansion water tank 3 serves as the connection end; the insertion end is provided with a speed regulating and diverting structure. The existing degassing pipe 1 is a through pipe, and the high-temperature coolant directly falls onto the liquid surface after passing through the degassing pipe 1 into the air cavity area inside the expansion water tank 3, so that a large amount of air is drawn into the coolant with the water flow, and at the same time, the air flows into the air cavity area inside the expansion water tank 3 and directly falls into the coolant, which cannot realize the rapid condensation of steam, which causes the vehicle cooling system to be unable to complete the degassing. In this embodiment, by setting a speed regulating and guiding structure, the flow rate of the coolant flowing into the expansion water tank 3 through the speed regulating and guiding structure is reduced and the flow direction of the coolant is changed, so as to reduce the flow rate of the high-temperature coolant flowing into the air cavity area inside the expansion water tank 3, reduce the air being drawn into the coolant of the expansion water tank 3, and at the same time adjust the flow direction of the high-temperature coolant through the drain hole 2 so that it flows down along the inner wall of the expansion water tank 3, so as to realize the rapid condensation of the steam in the high-temperature coolant into water and increase the degassing performance of the cooling system. In the vehicle cooling system, the extension end of the degassing pipe 1 is connected to the inside of the expansion water tank 3, and the connecting end is connected to the engine and the radiator, so as to transport the cooling water from the engine end degassing port and the radiator degassing port to the expansion water tank 3.

[0029] Regarding the speed regulating and guiding structure. The side and / or front end of the degassing pipe 1 is provided with a drainage hole 2 to form the speed regulating and guiding structure. When the degassing pipe 1 is connected to the expansion water tank 3, the drainage hole 2 is directed toward and close to the inner wall of the water tank to ensure that the water coming out of the degassing pipe 1 flows down along the inner wall of the expansion water tank as much as possible. Preferably, the number and size of the drainage holes 2 are opened according to demand, thereby adjusting the outlet flow rate of the degassing pipe 1 injected into the expansion water tank 3.

[0030] Optionally, the center points of the drainage holes 2 opened on the side of the insertion end are arranged along one of the generatrixes of the insertion end or arranged on both sides of the same generatrix, so that the flow direction of water coming out of the drainage holes 2 tends to be the same. Preferably, the drainage holes 2 opened on the side of the insertion end have the center lines of the drainage holes 2 coincident, that is, the center line is one of the generatrixes of the insertion end. By setting the drainage holes 2, the original way of draining water from the front end of the insertion end is changed to draining water through the side of the insertion end, and multiple drainage holes 2 are set to share the water outlet pressure of the insertion end, and the water outlet is more moderate.

[0031] In a preferred embodiment, the front end surface of the degassing pipe insertion end is generally sealed, and only a drainage hole is provided on the side of the insertion end, and the center line of the drainage hole 2 is on one of the generatrixes of the insertion end.

[0032] In addition, when a drainage hole is provided on the front end surface of the insertion end, the diameter of the drainage hole on the front end surface of the insertion end is smaller than the diameter of the degassing pipe 1 .

[0033] More specifically, the degassing pipe 1 is detachably connected to the expansion water tank 3. Preferably, the degassing pipe 1 and the expansion water tank 3 are interference fit. The degassing pipe 1 is fixed to the expansion water tank by interference fit, which is convenient for installation.

[0034] A method for using a device for adjusting the flow rate and direction of coolant at the end of a degassing pipe of an expansion water tank, comprising: adjusting the diameter and / or number of drainage holes 2 of the degassing pipe according to the water flow requirement of the extension end of the degassing pipe 1; rotating the degassing pipe 1 to adjust the direction of the drainage holes 2 according to the opening position of the drainage holes at the extension end of the degassing pipe 1, so that the drainage holes are directed toward and close to the inner wall of the expansion water tank; after determining the direction of the drainage holes, assembling the degassing pipe 1 to the expansion water tank 3 in a detachable manner. Preferably, the degassing pipe 1 is assembled to the expansion water tank 3 by interference fit.

[0035] Reference Figures 2-3 A degassing pipe used in an expansion water tank of a vehicle, wherein the front end of the degassing pipe 1 extends into the expansion water tank 3 for a certain length, the pipe body of the degassing pipe extending into the expansion water tank serves as the insertion end, and the pipe body exposed outside the expansion water tank 3 serves as the connection end. The insertion end is provided with a speed regulating and diverting structure. The side surface and / or the front end surface of the insertion end of the degassing pipe 1 are provided with drainage holes to form the speed regulating and diverting structure.

[0036] Those skilled in the art will appreciate that numerous variations to the above description are possible, and that the examples and figures are intended only to describe one or more specific implementations.

[0037] Although what is considered as exemplary embodiments of the present invention has been described and described, it will be understood by those skilled in the art that various changes and substitutions may be made thereto without departing from the spirit of the present invention. In addition, many modifications may be made to adapt specific situations to the teachings of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments and their equivalents that fall within the scope of the present invention.

Claims

1. A method for using a device for adjusting the flow rate and flow direction of coolant at the end of an expansion tank degassing pipe, characterized in that: The device comprises a degassing pipe and an expansion water tank. The front end of the degassing pipe extends into the expansion water tank for a certain length. The pipe body of the degassing pipe extending into the expansion water tank serves as an insertion end, and the pipe body exposed outside the expansion water tank serves as a connecting end. The insertion end is provided with a speed regulating and diverting structure. The flow rate and flow direction of the coolant entering the expansion water tank are changed so that the coolant entering the expansion water tank flows down along the inner wall of the expansion water tank; by reducing the flow rate of the coolant entering the expansion water tank and making the newly entered coolant flow down along the inner wall of the expansion water tank, the steam in the high-temperature coolant is quickly condensed into water, the degassing performance of the cooling system is increased, and the gas-liquid separation effect is significantly improved; The method comprises: adjusting the diameter and / or number of drainage holes of the degassing pipe according to the water flow requirement of the extension end of the degassing pipe; rotating the degassing pipe to adjust the direction of the drainage holes according to the opening position of the drainage holes of the extension end of the degassing pipe, so that the drainage holes face and approach the inner wall of the expansion water tank; after determining the direction of the drainage holes, assembling the degassing pipe on the expansion water tank in a detachable manner.

2. A method for using the device for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion water tank according to claim 1, characterized in that: A drainage hole is arranged on the side of the degassing pipe extension end to form the speed regulating and guiding structure.

3. A method for using the device for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion tank as claimed in claim 2, characterized in that: There are several drainage holes.

4. A method for using the device for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion water tank as claimed in claim 2, characterized in that: The center points of the drainage holes opened on the side of the insertion end are arranged along one of the busbars of the insertion end or on both sides adjacent to the same busbar.

5. A method for using the device for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion water tank as claimed in claim 4, characterized in that: The front end surface of the degassing pipe extending into the end is sealed.

6. A method for using the device for adjusting the flow rate and flow direction of the coolant at the end of the degassing pipe of the expansion water tank as claimed in claim 2, characterized in that: The degassing pipe is connected to the expansion water tank in a detachable manner.

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