Supercharger integrating water pumping function and improving sudden stop reliability

Abstract

The supercharger integrating the water pumping function and improving the sudden stop reliability comprises a turbine assembly, a middle shell, a gas compressor assembly and a middle shaft, the two ends of the middle shell are connected with the turbine assembly and the gas compressor assembly respectively, the middle shaft penetrates through the middle shell, the turbine assembly and the gas compressor assembly are installed at the two ends of the middle shaft respectively, and the middle shell is connected with the gas compressor assembly. The turbine assembly and the gas compressor assembly are linked; the supercharger is further provided with a cooling liquid cavity and a water pumping impeller, the cooling liquid cavity comprises a water inlet cavity, a water return cavity and a middle cavity, and the middle cavity is communicated with the water inlet cavity and the water return cavity; the water pumping impeller is installed in the middle of the middle shaft and located in the middle cavity. The cooling device has the advantages that the structure is compact, the supercharger can be continuously cooled during inertial motion of the supercharger rotor, the working stability of the supercharger is improved, and the service life of the supercharger is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of superchargers, and in particular to a supercharger with an integrated water pumping function to improve emergency stop reliability. Background Art

[0002] Fresh air (commonly known as "new air") enters the supercharger compressor after passing through the air filter and the intake pipe and becomes high-temperature and high-pressure gas. After passing through the intercooler, the temperature is reduced and then enters the combustion chamber through the intake pipe. In the combustion chamber, it reacts with the fuel. Most of the gas produced after combustion (commonly known as "exhaust gas") passes through the exhaust pipe to reach the supercharger turbine, driving the turbine to rotate and work on the compressor, and finally discharged into the atmosphere through the post-processor. At present, when the engine is shut down, due to the inertia, the supercharger rotor stops rotating after a delay of (10 to 60) seconds. At this time, the oil pump and water pump stop working, resulting in no coolant or oil flow inside the supercharger, and it cannot be effectively cooled. For some scenarios, the engine often stops suddenly from load. At this time, the supercharger rotor overheats during the lag rotation time, resulting in jamming and broken shaft. At present, the engine can only be constrained to return to idle stability for a period of time before shutting down to alleviate the risk of overheating and jamming, but this also causes a waste of fuel consumption and brings unnecessary waiting waste to users.

[0003] 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

[0004] The (main) purpose of the present invention is to provide a supercharger with a compact structure, an integrated water pump function capable of continuously cooling the supercharger when the supercharger rotor moves by inertia, and improving the emergency stop reliability.

[0005] To this end, the present invention proposes a supercharger with an integrated water pumping function to improve emergency stop reliability.

[0006] Preferably, the present invention may also have the following technical features:

[0007] A supercharger with an integrated water pumping function to improve emergency stop reliability comprises a turbine assembly, an intermediate shell, a compressor assembly and an intermediate shaft, wherein two ends of the intermediate shell are respectively connected to the turbine assembly and the compressor assembly, and the intermediate shaft passes through the intermediate shell, and the turbine assembly and the compressor assembly are respectively installed at two ends of the intermediate shaft, so as to link the turbine assembly and the compressor assembly; the supercharger is also provided with a cooling liquid chamber and a water pumping impeller, wherein the cooling liquid chamber comprises a water inlet chamber, a water return chamber and an intermediate chamber, and the intermediate chamber is connected to the water inlet chamber and the water return chamber; the water pumping impeller is installed in the middle of the intermediate shaft and in the intermediate chamber.

[0008] Furthermore, the water outlet of the return water chamber is connected to a thermostat.

[0009] Furthermore, the water inlet end of the water inlet cavity is connected to the water outlet end of the cooling water jacket of the cylinder body or the water outlet end of the cooling water jacket of the oil cooler.

[0010] Furthermore, the intermediate shell is provided with an assembly hole for mounting the intermediate shaft, and the assembly hole and the intermediate cavity are cross-connected.

[0011] Furthermore, it also includes sealed bearings, two of which are installed on the intermediate shaft and on both sides of the water pump impeller.

[0012] Furthermore, the sealed bearing is installed at the junction of the assembly hole and the middle cavity.

[0013] Furthermore, the intermediate shaft is a stepped shaft structure, and the water pump impeller is installed in the middle.

[0014] Furthermore, the middle part of the intermediate shaft is small and the two ends are large.

[0015] Furthermore, the intermediate housing is connected to the turbine assembly and the compressor assembly by bolts.

[0016] The beneficial effects of the present invention compared with the prior art include: after the engine water pump stops working, the coolant circulation pipeline and the engine accessory water channel that needs to be cooled are still filled with coolant, and the rotating pump water impeller generates suction to suck the cooling water after the supercharger into the middle cavity of the supercharger, forming a water pump effect. The coolant in the coolant circulation pipeline and the engine accessory water channel continues to flow to the middle cavity of the supercharger under the action of the pump water impeller, and flows from the return water cavity of the supercharger to the thermostat side, so that when the supercharger rotates by inertia, the pump water impeller can still be used to drive the coolant remaining in the coolant circulation pipeline and each engine accessory water channel to continue to circulate, so that the supercharger can be cooled by the coolant, avoiding local high temperature of the supercharger, improving the reliability of the supercharger in the emergency stop condition, and meeting the user's frequent emergency shutdown scenario requirements. The pump water impeller is used to form a new water pump to continuously cool the supercharger rotor during inertial motion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the present invention.

[0018] Description of Figure Numbers

[0019] 1. Turbine assembly; 2. Intermediate housing; 3. Water pump impeller; 4. Water inlet chamber; 5. Compressor assembly; 6. Intermediate shaft. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] like Figure 1 The supercharger with integrated water pumping function to improve the reliability of emergency stop shown in the figure comprises a turbine assembly 1, an intermediate housing 2, a compressor assembly 5 and an intermediate shaft 6, the two ends of the intermediate housing 2 are respectively connected to the turbine assembly 1 and the compressor assembly 5, the intermediate shaft 6 passes through the intermediate housing 2, and the turbine assembly 1 and the compressor assembly 5 are respectively installed at its two ends, so as to link the turbine assembly 1 and the compressor assembly 5; the supercharger is also provided with a cooling liquid chamber and a water pumping impeller 3, the cooling liquid chamber comprises a water inlet chamber 4, a water return chamber and an intermediate chamber 7, and the intermediate chamber 7 is connected to the water inlet chamber 4 and the water return chamber. The water pumping impeller 3 is installed in the middle of the intermediate shaft 6 and in the intermediate chamber 7. When the engine stops, the supercharger rotor (intermediate shaft 6) continues to rotate under inertia for (10 to 60) seconds. At this time, the intermediate shaft 6 drives the water pump impeller 3 to rotate, sucking the coolant remaining in the coolant circulation pipeline behind the supercharger into the supercharger, and then transporting the coolant in the supercharger to the thermostat side. In this way, the sucked coolant flows through the supercharger to complete the cooling of the supercharger. After the engine water pump stops working, the coolant circulation pipeline and the engine accessory water channel that needs to be cooled are still filled with coolant, and the rotating pump impeller 3 generates suction to suck the cooling water after the supercharger into the middle chamber 7 of the supercharger, forming a water pump effect. The coolant in the coolant circulation pipeline and the engine accessory water channel continues to flow to the middle chamber 7 of the supercharger under the action of the pump impeller 3, and flows from the return water chamber of the supercharger to the thermostat side, so that when the supercharger rotates by inertia, the pump impeller 3 can still be used to drive the coolant remaining in the coolant circulation pipeline and the engine accessory water channel to continue to circulate, so that the supercharger can be cooled by the coolant, avoiding local high temperature in the supercharger, improving the reliability of the supercharger in emergency stop conditions, and meeting the user's needs for frequent emergency shutdown scenarios.

[0023] Specifically, the intermediate housing 2 is provided with an assembly hole for mounting the intermediate shaft 6, and the assembly hole is cross-connected with the intermediate cavity 7. Preferably, it also includes a sealed bearing, two of which are mounted on the intermediate shaft 6 and on both sides of the water pump impeller 3, for example, at the junction of the assembly hole and the intermediate cavity 7, to prevent the coolant from flowing along the intermediate shaft 6 to the turbine assembly 1 and the compressor assembly 5.

[0024] In some embodiments, the intermediate shaft 6 is a stepped shaft structure, in the middle of which the pump impeller 3 is installed. For example, the middle of the intermediate shaft is small and the two ends are large.

[0025] Preferably, the intermediate casing 2 is connected to the turbine assembly 1 and the compressor assembly 5 by bolts.

[0026] 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.

[0027] 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 supercharger with integrated water pumping function to improve emergency stop reliability, comprising a turbine assembly, an intermediate shell, a compressor assembly and an intermediate shaft, wherein the two ends of the intermediate shell are respectively connected to the turbine assembly and the compressor assembly, and the intermediate shaft passes through the intermediate shell, and the two ends of the intermediate shaft are respectively installed with the turbine assembly and the compressor assembly, so that the turbine assembly and the compressor assembly are linked; characterized in that: The supercharger is also provided with a cooling liquid chamber and a water pump impeller. The cooling liquid chamber includes a water inlet chamber, a water return chamber, and an intermediate chamber. The intermediate chamber is connected with the water inlet chamber and the water return chamber. The water pump impeller is installed in the middle of the intermediate shaft and in the intermediate chamber.

2. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 1, characterized in that: The water outlet end of the water return chamber is connected to a thermostat.

3. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 1, characterized in that: The water inlet end of the water inlet cavity is connected to the water outlet end of the cooling water jacket of the cylinder body or the water outlet end of the cooling water jacket of the oil cooler.

4. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 1, characterized in that: The intermediate housing is provided with an assembly hole for mounting the intermediate shaft, and the assembly hole is cross-connected with the intermediate cavity.

5. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 4, characterized in that: It also includes sealed bearings, two of which are installed on the intermediate shaft and on both sides of the water pump impeller.

6. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 5, characterized in that: The sealed bearing is installed at the junction of the assembly hole and the middle cavity.

7. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 1, characterized in that: The intermediate shaft is a stepped shaft structure, and the water pump impeller is installed in the middle thereof.

8. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 7, characterized in that: The middle part of the intermediate shaft is small and the two ends are large.

9. A supercharger with integrated water pumping function to improve emergency stop reliability as claimed in claim 1, characterized in that: The intermediate housing is connected to the turbine assembly and the compressor assembly by bolts.

Images