Cooling pipeline with gas removal throttling and heat preservation functions

Abstract

The utility model discloses a cooling pipeline with degassing throttling heat preservation function relates to the field of automobile cooling system. The cooling pipeline with degassing throttling heat preservation function, including main pipeline and degassing branch, the main pipeline is the main channel of constituting engine coolant circulation, and the degassing branch is connected with main pipeline, and its export end is connected with the radiator water tank, the main pipeline includes pipeline and gravity valve mechanism, gravity valve mechanism is integrated in the outside of pipeline, and gravity valve mechanism is in the inside of the passageway of degassing branch. The cooling pipeline with degassing throttling heat preservation function, through the conical sealing valve seat of gravity valve mechanism and the cooperation of gravity small ball, gravity small ball is in complete butt conical sealing valve seat under the action of gravity, completely closes the degassing branch passageway, when, engine waterway only through main pipeline and warm air core body form internal circulation, and coolant does not flow through radiator water tank, can make engine rapid heating to the optimum working temperature.

Description

Technical Field

[0001] This utility model relates to the field of automotive cooling systems, and in particular to a cooling pipe with degassing, throttling and heat preservation functions. Background Technology

[0002] Automotive cooling systems use coolant as the heat transfer medium. Heat transfer between the engine, radiator, and heater core is achieved through cooling pipes. Simultaneously, residual gases (such as air left over from the filling process) must be expelled from the system to prevent problems like reduced water pump efficiency and engine overheating. Existing technologies for achieving degassing and throttling insulation mainly fall into two categories: Traditional throttle valve solution: The degassing circuit is composed of metal pipes, rubber hoses and throttle valves. Although it can achieve basic degassing, when the engine is cold-started or the ambient temperature is low, the degassing pipe will divert coolant to the radiator, resulting in slow engine temperature rise. This not only affects the heating efficiency of the heater core, but also increases engine idling fuel consumption and cannot meet the heat preservation requirements under low temperature conditions. Existing gravity valve solution: Replace the throttle valve with a gravity valve to reduce low-temperature diversion. However, this solution requires the gravity valve to be installed by splicing multiple sections of metal pipes and rubber hoses, resulting in a large number of sub-parts (such as additional connecting pipes and seals), complex assembly process, and in order to ensure smooth degassing, the degassing pipeline needs to be designed with a large Z-axis rise height (usually more than 50mm), which imposes strict requirements on the Z-axis layout space of the auxiliary water tank. At the same time, due to structural design defects, the existing gravity valve cannot completely seal the degassing branch under low-temperature conditions, and there is still some coolant diversion, which affects the heat preservation effect. Utility Model Content

[0003] The purpose of this invention is to provide a cooling pipeline with degassing, throttling, and heat preservation functions to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a cooling pipe with degassing, throttling, and heat preservation functions, comprising a main pipe and a degassing branch pipe. The main pipe is the main channel for the circulation of engine coolant. The degassing branch pipe is connected to the main pipe, and its outlet end is connected to a radiator. The main pipe includes a pipe and a gravity valve mechanism. The gravity valve mechanism is integrated on the outside of the pipe and is located inside the channel of the degassing branch pipe. The gravity valve mechanism includes a valve body and a gravity ball. A conical sealing valve seat is formed inside the valve body. The gravity ball has a density greater than that of the coolant and is movably disposed within the valve body. When the coolant temperature is less than or equal to the set threshold or the system pressure is less than or equal to the set pressure, the gravity ball abuts against the conical sealing valve seat under the action of gravity, completely sealing the degassing branch passage. When the coolant temperature exceeds the set threshold or the system pressure exceeds the set pressure, the gravity ball is lifted by the fluid pressure, opening the degassing branch channel.

[0005] Preferably, the connection point between the inlet end of the degassing branch and the main branch is higher than the outlet end, forming a gently sloping upward structure with a Z-direction height difference of ≤50mm.

[0006] Preferably, the gravity ball is made of stainless steel or ceramic and has a density of 7.8-8.0 g / cm³.

[0007] Preferably, the cone angle of the cone-shaped sealing valve seat is 60°-90°, and the contact surface with the gravity ball is provided with an elastic sealing ring.

[0008] Preferably, the set threshold is a coolant temperature of 60±5℃ or a system pressure of 15±2kPa.

[0009] Preferably, a plug is installed at the end of the valve body away from the pipeline. The plug is a solid sealing structure and does not connect to the flow channel of the degassing branch.

[0010] Preferably, fixed supports are installed on the outer sides of both ends of the pipe.

[0011] Preferably, the inlet end of the main pipeline is connected to the coolant outlet of the engine, and the outlet end of the main pipeline is connected to a heater core, and the engine has a built-in thermostat.

[0012] The technical effects and advantages of this utility model are as follows: This invention uses a conical sealing valve seat of a gravity valve mechanism in conjunction with a gravity ball. When the coolant temperature is ≤60±5℃ or the system pressure is ≤15±2kPa, the gravity ball completely abuts against the conical sealing valve seat under the action of gravity, completely sealing the degassing branch passage. At this time, the engine water circuit only forms an internal circulation with the heater core through the main pipeline. The coolant does not flow through the radiator, which can make the engine heat up to the optimal operating temperature quickly. This not only reduces fuel consumption during cold start, but also quickly raises the temperature of the passenger compartment through the heater core, solving the problems of poor heat preservation and slow heating of traditional throttle valve solutions. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the main pipeline of this utility model; Figure 2 This is a schematic diagram of the main pipeline of this utility model assembled into the engine.

[0014] In the diagram: 1. Main pipeline; 11. Pipeline; 12. Gravity valve mechanism; 121. Valve body; 122. Gravity ball; 123. Plug; 13. Fixed bracket; 2. Degassing branch; 3. Radiator; 4. Heater core; 5. Thermostat. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This invention provides, for example Figures 1-2 The cooling pipe shown includes a main pipe 1 and a degassing branch 2. The main pipe 1 is the main channel for the circulation of engine coolant. The degassing branch 2 is connected to the main pipe 1 and its outlet end is connected to a radiator 3. The main pipe 1 includes a pipe 11 and a gravity valve mechanism 12. The gravity valve mechanism 12 is integrated on the outside of the pipe 11 and is located inside the channel of the degassing branch 2. The gravity valve mechanism 12 includes a valve body 121 and a gravity ball 122. A conical sealing valve seat is formed inside the valve body 121. The gravity ball 122 has a density greater than that of the coolant and is movably disposed inside the valve body 121. When the coolant temperature is less than or equal to the set threshold or the system pressure is less than or equal to the set pressure, the gravity ball 122 abuts against the conical sealing valve seat under the action of gravity, completely sealing the degassing branch 2 passage. When the coolant temperature exceeds the set threshold or the system pressure exceeds the set pressure, the gravity ball 122 is lifted by the fluid pressure, opening the degassing branch 2 channel.

[0017] This invention utilizes the conical sealing valve seat of the gravity valve mechanism 12 in conjunction with the gravity ball 122. When the coolant temperature is ≤60±5℃ or the system pressure is ≤15±2kPa, the gravity ball 122 completely abuts against the conical sealing valve seat under the action of gravity, completely sealing the degassing branch 2 channel. At this time, the engine water circuit only forms an internal circulation with the heater core 4 through the main pipeline 1, and the coolant does not flow through the radiator 3, which can make the engine quickly heat up to the optimal operating temperature. This not only reduces fuel consumption during the cold start stage, but also quickly raises the temperature of the passenger compartment through the heater core 4, solving the problems of poor heat preservation and slow heating of traditional throttle valve solutions.

[0018] Furthermore, the connection point between the inlet end of the degassing branch 2 and the main pipeline 1 is higher than the outlet end, forming a gently sloping upward structure with a Z-direction height difference of ≤50mm.

[0019] Furthermore, the gravity ball 122 is made of stainless steel or ceramic, with a density of 7.8-8.0 g / cm³.

[0020] Furthermore, the cone angle of the conical sealing valve seat is 60°-90°, and an elastic sealing ring is provided on the contact surface with the gravity ball 122.

[0021] Furthermore, the threshold is set as coolant temperature 60±5℃ or system pressure 15±2kPa.

[0022] Furthermore, a plug 123 is installed at the end of the valve body 121 away from the pipe 11. The plug 123 is a solid sealing structure and is not connected to the flow channel of the degassing branch 2.

[0023] Furthermore, fixed supports 13 are installed on the outer sides of both ends of the pipe 11.

[0024] Furthermore, the inlet end of the main pipeline 1 is connected to the coolant outlet of the engine, and the outlet end of the main pipeline 1 is connected to the heater core 4, and the engine has a built-in thermostat 5.

[0025] The working process of this invention is based on the temperature and pressure changes of the engine cooling system. The opening / closing of the degassing branch 2 is controlled by the on / off state of the gravity valve mechanism 12, specifically divided into two working conditions: 1. Cold start / low temperature conditions (coolant temperature ≤60±5℃ or system pressure ≤15±2kPa) Structural action: When the engine is first started, the built-in thermostat 5 is in the closed state, and the engine water circuit is in internal circulation mode. At this time, the coolant temperature is low and the system pressure is low. The gravity ball 122 in the gravity valve mechanism 12 falls under the action of gravity and completely abuts the conical sealing valve seat of the valve body 121, and the degassing branch 2 passage is completely closed.

[0026] System operation: Coolant flows out from the engine coolant outlet and flows only through the main pipe 11 to the heater core 4. After exchanging heat with the cabin, it flows back to the engine and does not flow through the radiator 3. During this process, the engine heat is not carried away by the radiator 3 and the temperature rises rapidly to the optimal operating temperature. At the same time, the heater core 4 heats up quickly.

[0027] 2. Normal operation / high temperature conditions (coolant temperature > 60±5℃ or system pressure > 15±2kPa) Structural action: As the engine runs, the coolant temperature gradually rises, and the volume expansion causes the system pressure to rise; when the temperature or pressure exceeds the set threshold, the upward pressure of the coolant on the gravity ball 122 is greater than the weight of the ball, lifting the gravity ball 122 and opening the degassing branch 2 channel; at the same time, the engine's built-in thermostat 5 opens, and the water circuit switches to external circulation mode.

[0028] System operation: The coolant is divided into two paths: one path flows through the main pipe 1 to the heater core 4 to maintain the heating of the passenger compartment, and the other path flows through the thermostat 5 to the radiator 3 for heat dissipation; residual gas in the system (such as air released by the coolant when heated) flows through the degassing branch 2 (with a gentle slope rising structure to assist gas flow) to the upper water chamber of the radiator 3, and is finally discharged to the outside of the system through the pressure cover of the radiator 3, ensuring the efficiency of the water pump and the heat dissipation capacity of the cooling system, and preventing the engine from overheating.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cooling pipe with degassing, throttling, and heat preservation functions, comprising a main pipe (1) and a degassing branch pipe (2), wherein the main pipe (1) is the main channel for circulating engine coolant, and the degassing branch pipe (2) is connected to the main pipe (1), and its outlet end is connected to a radiator (3), characterized in that, The main pipeline (1) includes a pipe (11) and a gravity valve mechanism (12), the gravity valve mechanism (12) being integrated on the outside of the pipe (11) and located inside the channel of the degassing branch (2); The gravity valve mechanism (12) includes a valve body (121) and a gravity ball (122). A conical sealing valve seat is formed inside the valve body (121). The gravity ball (122) has a density greater than that of the coolant and is movably disposed inside the valve body (121). When the coolant temperature is less than or equal to the set threshold or the system pressure is less than or equal to the set pressure, the gravity ball (122) abuts against the conical sealing valve seat under the action of gravity, completely sealing the degassing branch (2) channel. When the coolant temperature is greater than the set threshold or the system pressure is greater than the set pressure, the gravity ball (122) is lifted by the fluid pressure, opening the degassing branch (2) channel.

2. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, The inlet end of the degassing branch (2) is connected to the main pipeline (1) at a position higher than the outlet end, forming a gently sloping upward structure with a Z-direction height difference of ≤50mm.

3. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, The gravity ball (122) is made of stainless steel or ceramic and has a density of 7.8-8.0 g / cm³.

4. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, The cone angle of the cone-shaped sealing valve seat is 60°-90°, and the contact surface with the gravity ball (122) is provided with an elastic sealing ring.

5. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, The set threshold is a coolant temperature of 60±5℃ or a system pressure of 15±2kPa.

6. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, A plug (123) is installed at the end of the valve body (121) away from the pipe (11). The plug (123) is a solid sealing structure and does not connect to the flow channel of the degassing branch (2).

7. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, Fixed supports (13) are installed on both sides of the pipe (11).

8. A cooling pipeline with degassing, throttling, and heat preservation functions according to claim 1, characterized in that, The inlet end of the main pipeline (1) is connected to the coolant outlet of the engine, and the outlet end of the main pipeline (1) is connected to the heater core (4), and the engine has a built-in thermostat (5).

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