RU2516069C2 - Engine cooling system auxiliary water tank - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine cooling systems. Proposed water tank comprises container (200) with chamber (100). Said container (200) has water inlet (31), water outlet (32), gas inlet (201) and gas outlet (202). Water inlet (31) and water outlet (32) are communicated with chamber (100). Gas inlet (201) and gas outlet (202) are communicated via exhaust gas channel. Exhaust gas channel is not communicated with chamber (100). Engine cooling system comprises separate auxiliary water tank and exhaust gas channel to inhibit an ingress of engine and radiator gases into said auxiliary water tanks and its mixing with cooling fluid in auxiliary water tank.

EFFECT: decreased pressure in water tank and coolant temperature.

15 cl, 2 dwg

Description

Technical field

The present invention relates to the field of engine technology, in particular to an auxiliary water tank for an engine cooling system and an engine cooling system.

State of the art

The function of the engine cooling system is to partially absorb the heat produced by the engine, to generate heat in a timely manner during engine operation, and thus to cool the engine components appropriately to maintain the engine in the proper temperature range.

Typically, an engine cooling system comprises a radiator (usually also known as a water tank), a water pump, a fan, a thermostat, a temperature sensor and a water cooling cover, etc. When the engine is running, the refrigerant in the engine cooling system is heated and increased in volume; after the engine stops, the refrigerant in the engine cooling system cools and decreases in volume. To adapt to the variable volume of refrigerant in the engine cooling system, an auxiliary water tank (usually also known as an expansion water tank) is usually installed in the engine cooling system, which communicates with the radiator.

In particular, as the refrigerant in the engine cooling system increases in volume, part of the refrigerant will be transferred to the auxiliary water tank and held there; as the refrigerant cools, the refrigerant in the auxiliary water tank will automatically move back to the radiator to replenish the radiator with refrigerant. If it is necessary to replenish the refrigerant in the engine cooling system, it is possible to introduce a certain amount of refrigerant into the auxiliary water tank.

Figure 1 presents a schematic illustration of an engine cooling system; The system contains a traditional auxiliary water tank. The engine cooling system comprises: an engine 1, a radiator 2, an auxiliary water tank 3, the engine 1 comprising an engine inlet 11, an engine outlet 12 and an engine outlet 13; the radiator 2 comprises a radiator inlet 21, a radiator water outlet 22, and a radiator gas outlet 23; the auxiliary water tank 3 comprises an opening 31 for introducing water, a water outlet 32 of the auxiliary water tank and an opening for discharging gas 33 of the auxiliary water tank; the engine water inlet 11 communicates with the auxiliary water tank outlet 32 and the radiator water outlet 22, respectively, the engine water outlet 12 communicates with the radiator water outlet 21, and the gas outlet 33 of the auxiliary water tank 33 communicates with the engine gas outlet 13 and the gas outlet 23 radiator respectively.

In the engine cooling system shown in FIG. 1, the refrigerant is transported in the auxiliary water tank from the water outlet 32 of the auxiliary water tank through the water inlet 11 of the engine to a cooling pipe provided in the engine; the warmer coolant in the engine moves from the engine outlet 12 through the radiator inlet 21 to the radiator 2, cools to a lower temperature in the radiator 2, and then moves backward through the closed circuit to the engine from the radiator outlet 22 through the engine inlet 11 .

As heating and increase in the amount of refrigerant in the engine cooling system, it will move back into the auxiliary water tank 3 through the water outlet 32 of the auxiliary water tank; thus, the auxiliary water tank 3 is used to hold a portion of the refrigerant.

Also, during operation, the engine produces a certain amount of gas in the refrigerant, since the refrigerant in the cooling system is heated. The gas produced (for example, in the radiator 2 and the engine 1) by the refrigerant is transported through the gas outlet 23 of the radiator and the gas outlet 13 of the engine, respectively, into the gas outlet 33 of the auxiliary water tank and then discharged into the external environment through the water inlet 31 for the auxiliary water tank 3.

From the above analysis it follows that the auxiliary water tank 3 of the engine cooling system not only retains part of the refrigerant of the cooling system, but also at least partially retains gas from the engine 1 and radiator 2, since the auxiliary water tank 3 takes over the discharge function gas under pressure.

Now, most of the auxiliary water tanks in existing engine cooling systems are single-chamber auxiliary water tanks. In other words, such an auxiliary water tank contains only one chamber, therefore, the refrigerant held in the auxiliary water tank is in the same chamber with the gas from the cooling system.

The disadvantages of such traditional auxiliary water tanks are that: firstly, after gas from the engine and radiator penetrates into the auxiliary water tank, it creates an increased pressure in the auxiliary water tank, which thus adversely affects the removal of gas produced in the engine and a radiator with a refrigerant, due to the fact that the auxiliary water tank is usually made in the form of a closed chamber, with the exception of the moment the refrigerant (for example, water) is introduced into it; secondly, gas from the engine and radiator carries heat to the auxiliary water tank, and this heat not only creates an increased pressure in the auxiliary water tank and adversely affects the removal of gas produced in the engine and radiator by the refrigerant, but also causes an increase in the temperature of the refrigerant held in the auxiliary water tank, thereby increasing the heat load of the entire engine cooling system.

Therefore, a technical scheme is required that can overcome the above disadvantages.

Disclosure of invention

To overcome the disadvantage that gas and liquid are in the same chamber in conventional auxiliary water tanks, the present invention provides an auxiliary water tank and an engine cooling system configured to separate a gas moving channel from a liquid moving channel.

According to one aspect of the present invention, the present invention provides an auxiliary water tank for an engine cooling system, which comprises a tank body defining a chamber with a water inlet, a water outlet of the auxiliary water tank and a gas inlet of the auxiliary water tank located on the tank body, the water inlet and the water outlet of the auxiliary water tank communicate with the camera, respectively. The auxiliary water tank further comprises a gas outlet of the auxiliary water tank, wherein the gas outlet of the auxiliary water tank and the gas outlet of the auxiliary water tank communicate with each other through the exhaust channel of the auxiliary water tank, and the exhaust channel of the auxiliary water tank does not communicate with the camera.

In another aspect of the present invention, there is provided an engine cooling system, which comprises:

an engine that comprises an engine water inlet, an engine water outlet and an engine gas outlet;

a radiator that includes a radiator water inlet, a radiator water outlet and a radiator gas outlet; and

an auxiliary water tank, which is an auxiliary water tank proposed in the first aspect of the present invention, wherein the engine water inlet communicates with the auxiliary water tank and the radiator water outlet, respectively, the engine water outlet communicates with the radiator water outlet, and the gas inlet of the auxiliary water tank with the engine gas outlet and the radiator gas outlet, respectively about.

In accordance with the proposed auxiliary water tank and engine cooling system, due to the separation of the exhaust channel of the auxiliary water tank from the chamber i.e. the installation of a separate gas exhaust pipe, the gas transfer channel and the liquid transfer channel in the cooling system are separated from each other so that the gas from the engine cooling system, such as an engine or radiator, is not mixed with the refrigerant in the auxiliary water tank, and thus , the objectives of the present invention have been achieved.

In a preferred embodiment, the auxiliary water tank further comprises a first valve, which is located at the gas outlet of the auxiliary water tank and is configured to turn on or off, if necessary, depending on the gas pressure in the exhaust channel of the auxiliary water tank.

In a preferred embodiment, the first valve is a two-way valve, allowing gas to escape from the exhaust channel of the auxiliary water tank through the gas outlet of the auxiliary water tank, and to supply gas to the exhaust channel of the auxiliary water tank through the gas outlet of the auxiliary water tank.

In a preferred embodiment, the auxiliary water tank further comprises a gas chamber and a lid, wherein the gas chamber is located in the exhaust channel of the auxiliary water tank, the gas outlet of the auxiliary water tank is located on the gas chamber, and the lid is mounted on the tank body and is configured to open or closing the gas chamber.

In a preferred embodiment, the cap is installed at the bottom of the tank body.

In a preferred embodiment, the auxiliary water tank further comprises a baffle and an additional gas outlet of the auxiliary water tank, wherein the baffle contains ventilation openings and is located in the chamber and divides the chamber into an upper chamber and a lower chamber; an additional gas outlet of the auxiliary water tank is located on the tank body and communicates with the upper chamber; and the water inlet and the water outlet of the auxiliary water tank communicate with the lower chamber.

In a preferred embodiment, the auxiliary water tank further comprises a second valve located on the additional gas outlet of the auxiliary water tank and is configured to turn on and off if necessary, depending on the gas pressure in the upper chamber.

In a preferred embodiment, the second valve is a two-way valve that allows gas to escape from the upper chamber through an additional gas outlet of the auxiliary water tank and to enter it into the upper chamber through the additional gas outlet of the auxiliary water tank.

In a preferred embodiment, an additional gas outlet of the auxiliary water tank is located on the upper part of the upper chamber.

In a preferred embodiment, the inner wall of the upper chamber comprises a guide surface that provides a continuous and smooth direction of gas under pressure from the lower chamber to the additional gas outlet of the auxiliary water tank.

In a preferred embodiment, the water inlet is located at the highest point of the lower chamber.

In a preferred embodiment, the auxiliary water tank further comprises a lid of the water inlet opening mounted in a removable manner on the water inlet opening.

In a preferred embodiment, the auxiliary water tank further comprises a flow guiding device that comprises a tortuous channel for guiding the flow and is located in the lower chamber; moreover, one end of the tortuous channel for directing the flow communicates with the lower chamber, and the other end of the tortuous channel for directing the flow communicates with the water outlet of the auxiliary water tank.

In a preferred embodiment, the water outlet of the auxiliary water tank is located at the bottom of the lower chamber.

Brief Description of the Drawings

Figure 1 presents a schematic representation of a conventional engine cooling system; and

2 is a schematic illustration of an additional water tank according to a preferred embodiment of the present invention.

The implementation of the invention

In the following description, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, the auxiliary water tank for the engine cooling system proposed in the present embodiment includes a tank body 200 defining a chamber 100 with a water inlet 31, a water outlet 32 of the auxiliary water tank, and a gas inlet 201 of the auxiliary water tank located on the tank body 200, wherein the water inlet 31 and the water outlet 32 of the auxiliary water tank are in communication with the chamber 100, respectively; moreover, the auxiliary water tank further comprises a gas outlet 202 of the auxiliary water tank, the gas outlet 201 of the auxiliary water tank and the gas outlet 202 of the auxiliary water tank communicate with each other through the exhaust channel 203 of the auxiliary water tank, and the exhaust channel 203 of the auxiliary water tank does not communicate camera 100.

As indicated above, the auxiliary water tank is adapted to adapt to a variable amount of refrigerant in the engine cooling system; as the amount of refrigerant in the engine cooling system increases, part of the refrigerant will be transferred to the auxiliary water tank, where it will be retained; as the refrigerant cools down, the refrigerant in the auxiliary water tank will automatically move to the radiator to replenish the refrigerant in the radiator. If it is necessary to replenish the refrigerant in the engine cooling system, it is possible to introduce a certain amount of refrigerant into the auxiliary water tank.

The auxiliary water tank comprises a tank body 200, which constitutes the main circuit of the auxiliary water tank. In various embodiments of the present invention, the shape and volume of the tank body 200 can be selected according to the specific application, provided that the tank body 200 forms a chamber 100 inside, and is suitable for an engine cooling system. The tank body 200 is typically made of a metal material such as cast iron or aluminum alloy, etc. Of course, the tank body 200 can also be made of any other suitable material, such as structural plastic.

The tank body 200 defines a chamber 100 inside that is designed to hold at least refrigerant (e.g., water) in the engine cooling system. The capacity of the chamber 100 typically depends on the volume of the tank body 200, which can be selected according to the type and displacement of the engine. The housing 200 of the tank can be made as one-piece or prefabricated, also specialists in the art can be developed and selected a special type of tank, suitable for a particular application.

The tank body 200 includes a water inlet 31, an auxiliary water tank outlet 32 and an auxiliary water tank gas inlet 201, wherein the water inlet 31 and the auxiliary water outlet 32 communicate with the chamber 100, respectively. If it is necessary to replenish the refrigerant in the auxiliary water tank, it is possible for the operator to introduce the refrigerant through the opening 31 for introducing water into the chamber 100 of the auxiliary water tank to replenish or replace the refrigerant in the engine cooling system. A water inlet 31 is typically located on the top of the tank body 200. The refrigerant in the auxiliary water tank is directed to the necessary parts (for example, to the engine) through the water outlet 32 of the auxiliary water tank. The gas inlet 201 of the auxiliary water tank is used to communicate with the gas outlet in the engine cooling system, to allow gas to be received from, for example, engine 1 and / or radiator 2.

Also, the auxiliary water tank proposed in the present embodiment also includes a gas outlet 202 of the auxiliary water tank, the gas inlet 201 of the auxiliary water tank and the gas outlet 202 of the auxiliary water tank communicate with each other through the exhaust gas channel 203 of the auxiliary water tank, and the channel 203 of the exhaust gas of the auxiliary water tank does not communicate with the chamber 100. In other words, the channel 203 of the exhaust gas of the auxiliary water tank tank is used as a displacement gas passage of the engine cooling system in an auxiliary water tank, while the hole 31 to enter the water chamber 100 and the water outlet 32 of the auxiliary water tank is used as a refrigerant channel for moving the engine cooling system in an auxiliary water tank; since these two channels do not communicate with each other, in the auxiliary water tank proposed in the present embodiment, the gas from the engine 1 and / or the radiator 2 will not come into contact with the refrigerant, and thus will not mix with refrigerant.

As a result, in the auxiliary water tank proposed in the present embodiment, the pressure will not increase or the temperature of the refrigerant will not increase, since the auxiliary water tank (in general) will not be exposed to hot gas from, for example, engine 1 and / or radiator 2.

Typically, gas, for example, from engine 1 and / or radiator 2, has a relatively high temperature and pressure. When the refrigerant is heated in the engine cooling system and gas is released, the gas enters the exhaust gas channel 203 of the auxiliary water tank through the gas inlet 201 of the auxiliary water tank, and thus it is possible to discharge it into the environment through the gas outlet 202 of the auxiliary water tank.

Preferably, to control the discharge of gas through the gas outlet 202 of the auxiliary water tank, and therefore control the pressure in the engine cooling system, the auxiliary water tank further comprises a first valve 204 located on the gas outlet 202 of the auxiliary water tank, which is configured to turn on or off if necessary , depending on the gas pressure in the exhaust gas channel 203 of the auxiliary water tank.

If the first valve 204 is located on the gas outlet 202 of the auxiliary water tank, the gas in the exhaust channel 203 of the auxiliary water tank will not be able to freely exit the auxiliary water tank; conversely, the first valve 204 will control the gas outlet. That is, if the gas pressure in the exhaust gas channel 203 of the auxiliary water tank is lower than a predetermined value, then the first valve 204 is held in the closed position (OFF) and does not let gas into the exhaust gas channel 203 of the auxiliary water tank to be discharged into the environment; if the gas pressure in the exhaust gas channel 203 of the auxiliary water tank is not inferior to a predetermined value, then the first valve 204 is put into the open position (ON) and, thus, gas is introduced into the exhaust channel 203 of the auxiliary water tank for output to the environment through the first valve 204.

Thus, thanks to the first valve 204, it is possible to maintain the pressure in the pipeline of the cooling system within acceptable limits and thus preferred for the circulation of refrigerant in the pipeline of the cooling system and to maintain the engine cooling system in the correct and reliable working condition.

Moreover, the first valve 204 is also useful for preventing various foreign bodies or dust from entering the cooling system pipe through the gas outlet 202 of the auxiliary water tank and thus preventing contamination of the liquid in the cooling system with foreign bodies or dust.

The first valve 204 may be any conventional gas control valve, such as various electro-pneumatic valves. Or it can be made with a conventional sealing cap, known from the art of pressure vessels.

More preferably, the first valve 204 may be a two-way valve that allows gas to escape from the auxiliary water tank exhaust channel 203 through the auxiliary water tank gas outlet 202 (if the gas pressure in the auxiliary water tank exhaust channel 203 exceeds a predetermined value) and an inlet gas in the exhaust gas channel 203 of the auxiliary water tank through the gas outlet 202 of the auxiliary water tank (if the gas discharge in the channel 203 blast gases of the auxiliary water tank exceeds a predetermined value), and, thus, it is possible to maintain the pressure level in the engine cooling system within acceptable limits.

Preferably, the auxiliary water tank also comprises a gas chamber 205 and a lid 206, wherein the gas chamber 205 is located in the exhaust channel 203 of the auxiliary water tank, the gas outlet 202 of the auxiliary water tank is located on the gas chamber 205, and the lid 206 is mounted on the tank body 200 (movable or removable), and is configured to open or close the gas chamber 205.

As shown in FIG. 2, the gas chamber 205 is a chamber formed in the exhaust channel 203 of the auxiliary water tank, with a relatively large cross-section for the flow through. After the gas penetrates into the exhaust gas channel 203 of the auxiliary water tank, the gas will move to the gas chamber 205; due to the relatively large volume of the gas chamber 205, at least a portion of the gas will remain in the gas chamber 205. Due to the fact that the gas chamber 205 is located in the exhaust gas channel 203 of the auxiliary water tank, it is possible to accumulate a gas stream in the exhaust channel 203 of the auxiliary water tank, avoidance of shock load on the pipeline of the engine cooling system. In the case of a first valve 204, the shock load on the first valve 204 is avoided.

The gas outlet 202 of the auxiliary water tank is located on the gas chamber 205, that is, the gas in the exhaust channel 203 of the auxiliary water tank first enters the gas chamber 205, before it is discharged through the gas outlet 202 of the auxiliary water tank. Thus, when the gas outlet 202 of the auxiliary water tank is in the open state (ON), gas is instantaneously discharged in the gas chamber 205 to the environment through the gas outlet 202 of the auxiliary water tank. If the first valve 204 is located on the gas outlet 202 of the auxiliary water tank, the first valve 204 is switched from the closed position to the open when the gas pressure in the gas chamber 205 reaches a predetermined value, and thus, gas is removed from the auxiliary water tank.

Since the gas in the exhaust gas duct 203 of the auxiliary water tank comes from the refrigerant, the gas from, for example, the engine 1 and / or the radiator 2 usually contains steam. After operating the auxiliary water tank for a certain time, water can accumulate in the gas chamber 205 adjacent to the gas outlet 202 of the auxiliary water tank, which affects the degree of ease of gas removal through the gas outlet 202 of the auxiliary water tank.

Thus, it is preferable for timely removal of the accumulated water on the tank body 200 to move the lid 206 in a movable or removable manner to open or close the gas chamber 205. Thus, after operating the auxiliary water tank for a certain time, it is possible to open the lid 206 for lowering or retrieving the accumulated water stored in the gas chamber 205, and thus maintaining the efficiency of the outlet of the gas outlet 202 of the auxiliary water tank.

It is possible to mount the lid 206 on the tank body 200 in a movable or removable manner in various ways. For example, the cover 206 can be pivotally attached to the tank body 200, or mounted on the tank body 200 by means of fixing means, such as bolts.

Preferably, the cap 206 is mounted on the bottom of the tank body 200, as shown in FIG. In this design, the opening of the gas chamber 205 closed by the lid 206 is directed downward; thus, upon opening the lid 206, the liquid accumulated in the gas chamber 205 flows naturally under the influence of gravity.

The above description basically describes a gas transfer channel in an auxiliary water tank proposed in the present embodiment. In the following description, a channel for moving a liquid in an auxiliary water tank will be described in more detail with reference to FIG. 2; in particular, the characteristics of the fluid transfer channel in the chamber 100 in the auxiliary water tank will be described in more detail.

As shown in FIG. 2, the auxiliary water tank also includes a partition 215 and an additional gas outlet 207 of the auxiliary water tank, wherein the partition 215 includes ventilation holes 208, is located in the chamber 100 and divides the chamber 100 into the upper chamber 209 and the lower chamber 210; an additional gas outlet 207 of the auxiliary water tank is located on the tank body 200 and communicates with the upper chamber 209; and the water inlet 31 and the water outlet 32 of the auxiliary water tank are in communication with the lower chamber 210.

The partition 215 with the ventilation holes 208 is usually horizontally positioned in the chamber 100 and thus separates the chamber 100 into the upper chamber 209 and the lower chamber 210. Moreover, the tank body 200 further comprises an additional gas outlet 207 of the auxiliary water tank, which communicates with the upper chamber 209. The lower chamber 210 of the auxiliary water tank is typically used to hold refrigerant.

During engine operation, at least a portion of the heat generated by the engine is inevitably transferred to the refrigerant in the auxiliary water tank. Consequently, pressure vapor is generated in the auxiliary water chamber 100. Thus, the vapor under pressure produced by the refrigerant in the lower chamber 210 passes through the ventilation holes 208 on the baffle 215 into the upper chamber 209 and creates an increased pressure in the upper chamber 209.

However, in the above-described construction proposed in the present embodiment, the steam passing into the upper chamber 209 under pressure from the auxiliary water tank through the additional gas outlet 207 of the auxiliary water tank, which communicates with the upper chamber 209, is provided; thus, the design prevents overpressure in the upper chamber 209 and maintains the pressure level in the upper chamber 209 within acceptable limits.

If it is necessary to replenish the refrigerant, it is possible to introduce refrigerant into the auxiliary water tank through the water inlet 31, which communicates with the lower chamber 210. Since the water outlet 32 of the auxiliary water tank communicates with the lower chamber 210, the refrigerant held in the lower chamber is allowed to flow out. 210, through the water outlet 32 of the auxiliary water tank, and its penetration into the circulation pipe of the engine cooling system.

Preferably, the auxiliary water tank further comprises a second valve (not shown) located on the additional gas outlet 207 of the auxiliary water tank and configured to turn on or off, if necessary, depending on the gas pressure in the upper chamber 209.

If there is a second valve, if the gas pressure in the upper chamber 209 is lower than a predetermined value, then the second valve is closed to prevent leakage of gas located in the upper chamber 209 from the upper chamber 209; if the gas pressure in the upper chamber 209 is equal to or exceeds a predetermined value, then the second valve will be opened and, thus, the gas in the upper chamber 209 is allowed to flow through the second valve. Therefore, with a second valve, it is possible to control the pressure level in the upper chamber 209 of the chamber 100 within acceptable limits.

The second valve may be any conventional gas control valve, such as various electro-pneumatic valves. Or it can be made with a conventional sealing cap, is known in the art of pressure vessels.

During engine operation, the refrigerant is heated and, therefore, increases in volume; as a result, the liquid level of the refrigerant in the lower chamber 210 rises. After the engine stops, the liquid level of the refrigerant in the lower chamber 210 drops. As a result of a change in the liquid level of the refrigerant in the lower chamber 210, the volume of the upper chamber 209 also changes, and therefore, the gas pressure in the upper chamber changes accordingly (of course, the gas pressure in the upper chamber 209 will also be affected by pressure).

Thus, in order to adapt to the aforementioned pressure change in the upper chamber 209, the second valve is preferably performed by a two-way valve, allowing gas to be discharged in the upper chamber 209 through the additional gas outlet 207 of the auxiliary water tank, and gas to enter the upper chamber 209 through the additional gas outlet auxiliary water tank opening 207.

Thus, when creating a vacuum in the upper chamber 209, it is possible for external air to enter the upper chamber 209 through the second valve to adapt to the conditions of the lowered level of refrigerant in the lower chamber 210.

Obviously, the steam under pressure produced in the upper chamber 209 always moves up. Therefore, in order to facilitate the flow of steam under pressure from the auxiliary water tank through the auxiliary gas outlet 207 of the auxiliary water tank, the additional gas outlet 207 of the auxiliary water tank is preferably located on the upper part of the upper chamber 209.

To direct the pressurized steam produced in the upper chamber 209, the inner wall of the upper chamber 209 preferably includes a guide surface 216 that provides a continuous and smooth direction of the pressurized gas from the lower chamber 210 to the auxiliary gas outlet 207 of the auxiliary water tank, as shown in FIG. 2. In other words, gas under pressure from the lower chamber 210 will not remain or accumulate in any area along the way to the upper chamber 209.

For example, the guide surface 216 may be an inclined beveled surface, or any other curved surface; it can be located on the upper surface and / or on the side surface of the inner wall of the upper chamber 209, and the guide surface 216 must prevent the accumulation of gas in any area in the upper chamber 209, and the direction of the gas to the additional gas outlet 207 of the auxiliary water tank.

If there is a guide surface 216, the steam produced in the upper chamber 209 will move upward along the guide surface 216 to the additional gas outlet 207 of the auxiliary water tank. Also, if there is a guide surface 216, the space in the upper chamber 209 will not hold steam under pressure; therefore, the presence of the guide surface 216 is advantageous for withdrawing all of the steam under pressure, and prevents the accumulation of steam under pressure in the upper chamber 209.

Preferably, the water inlet opening 31 is located at the highest point of the lower chamber 210. In this way, it is possible for the refrigerant introduced through the water entering opening 31 to reach the highest level at the highest point of the lower chamber 210, and without overflow through the partition 215, to penetrate into the upper camera 209; this arrangement provides the maximum prevention of liquid penetration into the gas flow area (i.e., upper chamber 209).

Preferably, as shown in FIG. 2, the auxiliary water tank further comprises a water inlet opening cover 212 mounted to the water inlet opening 31 in a removable manner. The water inlet cover 212 is usually mounted on the water inlet 31. If it is necessary to introduce water, it is possible to open the cover 212 of the hole for water input and subsequent input of inputs; after which it is possible to re-install the cover 212 of the water inlet to the water inlet 31. It is possible to install the cover 212 of the water inlet opening at the water inlet 31 in any way; for example, installation by means of a threaded connection is possible.

After introducing the refrigerant through the opening 31 for introducing water into the chamber 100 (in the lower chamber 210, if any), the refrigerant is held in the chamber 100; it subsequently enters the circulation pipe through the water outlet 32 of the auxiliary water tank during the refrigerant circulation.

Given that the refrigerant just introduced into the chamber 100 moves at a relatively high speed, in order to avoid the shock load of the refrigerant moving at a relatively high speed on the refrigerant circulation pipe, preferably, the auxiliary water tank also contains a flow guide device 213 located at the bottom camera 210; moreover, the flow guiding device 213 comprises a tortuous channel 214 for guiding the flow, one end of which communicates with the lower chamber 210, and the other end of which communicates with the water outlet 32 of the auxiliary water tank.

In the presence of a flow-guiding device 213 that includes a tortuous channel 214, the shock caused by the refrigerant just introduced into the chamber 100 and moving at a relatively high speed does not immediately reach the outlet 32 of the auxiliary water tank; instead, the load must first pass through the refrigerant in the tortuous channel 214 before reaching the water outlet 32 of the auxiliary water tank. Undoubtedly, the shock load caused by the refrigerant penetrating into the chamber 100 will be significantly weakened as it passes through the tortuous channel 214. Thus, with this design of the flow guiding device 213, smooth and soft passage of the coolant flow to the engine cooling system is ensured; and avoiding the clogging effect resulting from the rapid introduction of the refrigerant.

Also, even in the event of an excessive shock load in the refrigerant to the engine or radiator when the vehicle is in operation, the tortuous channel 214 of the flow directing device 213, to one degree or another, prevents the shock load from being transferred to the refrigerant in the auxiliary water tank. Moreover, the tortuous channel 214 also provides for the prevention of the penetration of foreign bodies from the auxiliary water tank into the engine or radiator.

Preferably, the water outlet 32 of the auxiliary water tank is located at the bottom of the lower chamber 210, to facilitate the flow of refrigerant from the auxiliary water tank through the water outlet 32 of the auxiliary water tank.

The above description generally describes an auxiliary water tank proposed in the present embodiment. In the auxiliary water tank, it is possible to avoid the adverse effects of gas, for example from an engine or radiator, on the auxiliary water tank, this possibility is achieved by separating the exhaust gas channel 203 of the auxiliary water tank, which is the gas moving channel, from the water inlet 32, chamber 100 and water outlet openings 32 of the auxiliary water tank, since said opening 32 serves as a refrigerant transfer channel, the gas transfer channel has no message with refrigerant transfer channel.

Additionally, in a second embodiment of the present invention, there is also provided an engine cooling system, which comprises:

an engine 1, which comprises an engine inlet 11, an engine outlet 12 and an engine outlet 13;

a radiator 2, which comprises a radiator water inlet 21, a radiator water outlet 22 and a radiator gas outlet 23; and

auxiliary water tank, which is an auxiliary water tank proposed in the first embodiment of the present invention, wherein

the engine water inlet 11 is in communication with the auxiliary water tank water outlet 32 and the radiator water outlet 22, respectively, the engine water outlet 12 is in communication with the radiator water inlet 21, and the gas inlet 201 of the auxiliary water tank is in communication with the gas outlet 13 of the engine and the gas outlet 23 of the radiator, respectively.

According to the engine cooling system proposed in the second embodiment of the invention, the conventional auxiliary water tank 3 shown in FIG. 1 may be replaced by the auxiliary water tank shown in FIG. 2. The principle of operation of the engine cooling system proposed in this embodiment of the invention is essentially no different from the principle of operation of a conventional engine cooling system, with the exception of the main difference, which lies in the auxiliary water tank proposed in the first embodiment of the present invention, i.e. the gas discharged to the gas inlet 201 of the auxiliary water tank from the gas outlet 13 of the engine and the gas outlet 23 of the radiator does not come into contact with the refrigerant in the auxiliary water tank.

Additionally, in a third embodiment of the present invention, there is also provided an engine cooling system, which comprises:

an engine 1, which comprises an engine inlet 11, an engine outlet 12 and an engine outlet 13;

a radiator 2, which comprises a radiator water inlet 21, a radiator water outlet 22 and a radiator gas outlet 23; and

an auxiliary water tank, which comprises a tank body defining a chamber with an opening for introducing water, and a water outlet of the auxiliary water tank, which is located on the tank body and is in communication with the camera, respectively; and

a gas exhaust pipe separated from the auxiliary water tank;

moreover, the engine inlet 11 communicates with the auxiliary water tank outlet and the radiator water outlet 22, respectively, the engine outlet 12 communicates with the radiator water outlet 21, and the gas exhaust pipe communicates with the engine gas outlet 13 and the radiator gas outlet 23, respectively.

In accordance with the proposed engine cooling system, the gas produced by the engine and the gas produced by the radiator are discharged through a separate gas exhaust pipe and its penetration into the auxiliary water tank is prevented; as a result, the gas does not come into contact with the refrigerant in the auxiliary water tank. With this arrangement, the objectives of the present invention can also be achieved.

The embodiments of the present invention described above in the description of the auxiliary water tank and engine cooling system proposed in the present invention should be understood as descriptive and explanatory, and not as creating any limitations to the scope of protection of the present invention. For example, there are no restrictions on the number of components indicated in the technical scheme of the present invention (for example, the auxiliary water tank outlet 202, the auxiliary water tank outlet 201, the auxiliary water outlet 207 of the auxiliary tank, etc.), i.e., if necessary it is possible to arrange at least one component, at least two components, etc., provided that the objectives of the present invention are achieved. For the engine cooling system proposed in some embodiments of the present invention, only the engine, radiator and auxiliary water tank used in these embodiments of the present invention are described, while other components (e.g., water pump) of the engine cooling system are not described or simplified; however, the engine cooling system of the present invention does not preclude the installation of these well-known components. If necessary, the combination of the above components with the present invention, specialists in the art will be able to combine them with the present invention, taking into account the components known in existing engine cooling systems, provided that it is possible to achieve the objectives of the present invention.

The present invention is not limited to the above detailed description. The above features of the present invention can be implemented separately and / or in combination in any suitable way, without deviating from the essence of the present invention, and, therefore, various improvements, replacements and variations can be made on this basis.

Although the present invention has been described using embodiments, these embodiments should not be understood as creating any limitation on the scope of protection of the present invention. Specialists in the art will easily be able to make various replacements and improvements to the embodiments without deviating from the essence and scope of the present invention. Thus, the scope of protection of the present invention is defined only by the claims.

Legend

Engine: one Radiator: 2 Auxiliary water tank: 3 Engine water inlet: eleven Engine water outlet: 12 Engine gas outlet: 13 Radiator inlet: 21 Radiator outlet: 22 Radiator gas outlet: 23 Water inlet: 31 Auxiliary water tank outlet: 32 Auxiliary water tank gas outlet: 33 Camera: one hundred Tank body: 200 Auxiliary water tank gas inlet: 201 Auxiliary water tank gas outlet: 202 Auxiliary water tank exhaust channel: 203 First valve: 204 Gas chamber: 205 Cap: 206 Additional gas outlet of the auxiliary water tank: 207 Air vent: 208 Top camera: 209 Down Cam: 210 Cap for water inlet: 212 Flow directing device: 213 Channel directing: 214 Partition: 215 Guide surface: 216

Claims (15)

1. An auxiliary water tank for an engine cooling system, comprising
a housing (200) defining a chamber (100) with an opening (31) for introducing water,
the water outlet (32) of the auxiliary water tank and
a gas inlet (201) of the auxiliary water tank located on the tank body (200), wherein
a water inlet (31) and a water outlet (32) of the auxiliary water tank communicate with the chamber (100), respectively;
characterized in that it further comprises
gas outlet (202), and
its gas inlet (201) and gas outlet (202) communicate through the exhaust gas channel (203) of the auxiliary water tank, which does not communicate with the chamber (100). 2. The auxiliary water tank according to claim 1, which further comprises a first valve (204), which is located on the gas outlet (202) of the auxiliary water tank and is configured to turn on or off, if necessary, depending on the gas pressure in the channel (203) exhaust gas auxiliary water tank. 3. The auxiliary water tank according to claim 2, wherein the first valve (204) is a two-way valve that allows gas to escape from the exhaust gas channel (203) of the auxiliary water tank through the gas outlet (202) of the auxiliary water tank and the gas inlet to the channel ( 203) the exhaust gas of the auxiliary water tank through the gas outlet (202) of the auxiliary water tank. 4. The auxiliary water tank according to claim 2, which further comprises a gas chamber (205) and a cover (206), the gas chamber (205) being located in the exhaust gas channel (203) of the auxiliary water tank, the gas outlet (202) of the auxiliary water tank located on the gas chamber (205), and the cover (206) is mounted on the tank body (200) and is configured to open or close the gas chamber (205). 5. The auxiliary water tank according to claim 4, wherein the lid (206) is mounted on the bottom of the tank body (200). 6. The auxiliary water tank according to any one of claims 1 to 5, which further comprises a partition (215) and an additional gas outlet (207) of the auxiliary water tank, wherein the partition (215) contains ventilation holes (208), is located in the chamber (100) and divides the chamber (100) into an upper chamber (209) and a lower chamber (210); an additional gas outlet (207) of the auxiliary water tank is located on the tank body (200) and communicates with the upper chamber (209); and the water inlet (31) and the water outlet (32) of the auxiliary water tank communicate with the lower chamber (210). 7. The auxiliary water tank according to claim 6, which further comprises a second valve located on the additional gas outlet (207) of the auxiliary water tank and configured to turn on or off, if necessary, depending on the gas pressure in the upper chamber (209). 8. The auxiliary water tank according to claim 7, in which the second valve is a two-way valve that allows gas to escape from the upper chamber (209) through the additional gas outlet (207) of the auxiliary water tank and into the upper chamber (209) through the additional gas outlet opening (207) of the auxiliary water tank. 9. The auxiliary water tank according to claim 6, in which the additional gas outlet (207) of the auxiliary water tank is located on the upper part of the upper chamber (209). 10. The auxiliary water tank according to claim 9, in which the inner wall of the upper chamber (209) contains a guide surface (216) that provides a continuous and smooth direction of gas under pressure from the lower chamber (210) to the additional gas outlet (207) of the auxiliary water tank. 11. The auxiliary water tank according to claim 6, in which the hole (31) for introducing water is located at the highest point of the lower chamber (210). 12. The auxiliary water tank according to claim 11, which further comprises a cover (212) for the water inlet hole mounted on the water inlet (31) in a removable manner. 13. The auxiliary water tank according to claim 6, which further comprises
a flow guiding device (213) located in the lower chamber (210); moreover
the flow guiding device (213) comprises a tortuous channel (214) for guiding the flow, one end of which communicates with the lower chamber (210), and the other end of which communicates with the water outlet (32) of the auxiliary water tank. 14. The auxiliary water tank according to claim 13, wherein the water outlet (32) of the auxiliary water tank is located at the bottom of the lower chamber (210). 15. The engine cooling system, which contains:
an engine (1) that comprises an engine inlet (11), an engine outlet (12), and an engine gas outlet (13);
a radiator (2), which comprises a radiator inlet (21), a radiator water outlet (22) and a radiator gas outlet (23); and
auxiliary water tank according to any one of claims 1 to 14,
the water inlet (11) of the engine is in communication with the water outlet (32) of the auxiliary water tank and the water outlet (22) of the radiator, respectively,
the water outlet (12) of the engine communicates with the water inlet (21) of the radiator, and
the gas inlet (201) of the auxiliary water tank is in communication with the gas outlet (13) of the engine and the gas outlet (23) of the radiator, respectively.

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