Compact exhaust gas recirculation cooling equipment

Abstract

Compact exhaust gas recirculation cooling equipment is provided with a gas inlet and liquid inlet integrated piece, a liquid inlet connector, a gas outlet and liquid outlet integrated piece and a liquid outlet connector. The air inlet and liquid inlet integrated piece is connected to one end of the heat exchange tube shell and comprises an air inlet chamber and a liquid inlet chamber, and an air inlet and liquid inlet partition plate is arranged between the air inlet chamber and the liquid inlet chamber. The liquid inlet connector is connected to the upper portion of the heat exchange tube shell, and the air inlet chamber communicates with one end of the heat exchange tube core. The liquid inlet chamber is communicated with the heat exchange tube shell through a liquid inlet connector; the air outlet and liquid outlet integrated piece is connected to the other end of the heat exchange tube shell and comprises an air outlet chamber and a liquid outlet chamber, and an air outlet and liquid outlet partition plate is arranged between the air outlet chamber and the liquid outlet chamber; the liquid outlet connector is connected to the upper portion of the heat exchange tube shell, and the air outlet chamber communicates with the other end of the heat exchange tube core. The liquid outlet chamber is communicated with the heat exchange tube shell through a liquid outlet connector. The utility model has a compact structure and is suitable for engines with limited space; the overall structure is simple and the reliability is high; the section of the cooling liquid inlet is large, and cooling liquid pressure loss is small.

Description

Technical Field

[0001] The utility model relates to a compact exhaust gas recirculation cooling device, belonging to the technical field of EGR coolers. Background Art

[0002] As a key component of the EGR system (exhaust gas circulation system), the EGR cooler is mainly used to effectively cool the high-temperature exhaust gas to the required temperature range. Normally, the coolant enters or flows out of the EGR cooler through the inlet and outlet pipes, and efficiently exchanges heat with the high-temperature exhaust gas inside the EGR cooler.

[0003] At present, the most common EGR cooler design on the market uses water pipes as the coolant inlet and outlet structures. The water pipes are usually connected to the tube shell. The same design uses independent brackets as support fixing points. The brackets are connected to the tube shell. Such a structure occupies a large space and is more complicated to install. It is difficult to apply to engines with limited space. In addition, the coolant inlet section of the traditional EGR cooler is small, the coolant pressure loss is large, and the working reliability is low. It is necessary to develop a compact exhaust gas recirculation cooling device. Utility Model Content

[0004] To this end, the utility model provides a compact exhaust gas recirculation cooling device to solve the problems that the traditional solution is not suitable for use in a space with limited dimensions, has a large coolant pressure loss, and has low working reliability.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a compact exhaust gas recirculation cooling device, comprising a heat exchange shell, wherein a heat exchange core is arranged inside the heat exchange shell, and further comprising an air inlet and liquid inlet integrated part, a liquid inlet joint, an air outlet and liquid outlet integrated part and a liquid outlet joint;

[0006] The air inlet and liquid inlet integrated part is connected to one end of the heat exchange tube shell, and the air inlet and liquid inlet integrated part includes an air inlet chamber and a liquid inlet chamber, and an air inlet and liquid inlet baffle is provided between the air inlet chamber and the liquid inlet chamber; the liquid inlet joint is connected to the upper part of the heat exchange tube shell, and the air inlet chamber is connected to one end of the heat exchange tube core; the liquid inlet chamber is connected to the heat exchange tube shell through the liquid inlet joint;

[0007] The integrated gas outlet and liquid outlet part is connected to the other end of the heat exchange tube shell, and the integrated gas outlet and liquid outlet part includes a gas outlet chamber and a liquid outlet chamber, and a gas outlet and liquid outlet partition is provided between the gas outlet chamber and the liquid outlet chamber; the liquid outlet joint is connected to the upper part of the heat exchange tube shell, and the gas outlet chamber is connected to the other end of the heat exchange tube core; the liquid outlet chamber is connected to the heat exchange tube shell through the liquid outlet joint.

[0008] As a preferred solution for the compact exhaust gas recirculation cooling device, an air inlet is formed at the end of the air inlet chamber, and a liquid inlet is formed at the end of the liquid inlet chamber; the opening directions of the air inlet and the liquid inlet are in a vertical state.

[0009] As a preferred solution for the compact exhaust gas recirculation cooling device, an air intake fixing hole is provided at the edge of the air intake port; and a liquid intake fixing hole is provided at the edge of the liquid intake port.

[0010] As a preferred solution for the compact exhaust gas recirculation cooling device, an air outlet is formed at the end of the air outlet chamber, and a liquid outlet is formed at the end of the liquid outlet chamber; the opening directions of the air outlet and the liquid outlet are in a vertical state.

[0011] As a preferred solution for the compact exhaust gas recirculation cooling device, an air outlet fixing hole is provided at the edge of the air outlet; and a liquid outlet fixing hole is provided at the edge of the liquid outlet.

[0012] As a preferred solution for the compact exhaust gas recirculation cooling device, a pressure difference sensor interface is provided on the side of the air outlet chamber, and the pressure difference sensor interface is used to detect the pressure difference in the air outlet chamber through a pressure difference sensor.

[0013] As a preferred solution for the compact exhaust gas recirculation cooling device, a temperature sensor interface is provided on the side of the air outlet chamber, and the temperature sensor interface is used to detect the temperature in the air outlet chamber by a temperature sensor.

[0014] As a preferred solution for the compact exhaust gas recirculation cooling device, the heat exchange tube core comprises a flat tube, fins are arranged inside the flat tube, and fixed tube sheets are connected between the flat tubes.

[0015] The utility model has the following advantages: an air-inlet and liquid-inlet integrated part, a liquid-inlet joint, an air-outlet and liquid-outlet integrated part and a liquid-outlet joint are provided; the air-inlet and liquid-inlet integrated part is connected to one end of the heat exchange tube shell, the air-inlet and liquid-inlet integrated part includes an air-inlet chamber and a liquid-inlet chamber, and an air-inlet and liquid-inlet partition is provided between the air-inlet chamber and the liquid-inlet chamber; the liquid-inlet joint is connected to the upper part of the heat exchange tube shell, the air-inlet chamber is connected to one end of the heat exchange tube core; the liquid-inlet chamber is connected to the heat exchange tube shell through the liquid-inlet joint; the air-outlet and liquid-outlet integrated part is connected to the other end of the heat exchange tube shell, the air-outlet and liquid-outlet integrated part includes an air-outlet chamber and a liquid-outlet chamber, and an air-outlet and liquid-outlet partition is provided between the air-outlet chamber and the liquid-outlet chamber; the liquid-outlet joint is connected to the upper part of the heat exchange tube shell, the air-outlet chamber is connected to the other end of the heat exchange tube core; the liquid-outlet chamber is connected to the heat exchange tube shell through the liquid-outlet joint. The utility model has a compact structure and is suitable for engines with limited space; the overall structure is simple and the reliability is high; the coolant inlet cross-section is large and the coolant pressure loss is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment in size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of a compact exhaust gas recirculation cooling device provided in an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the three-dimensional structure of the compact exhaust gas recirculation cooling device provided in an embodiment of the utility model from another perspective;

[0020] Figure 3 It is a partial cross-sectional schematic diagram of a compact exhaust gas recirculation cooling device provided in an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of an integrated air and liquid inlet component of a compact exhaust gas recirculation cooling device provided in an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the integrated gas and liquid outlet of the compact exhaust gas recirculation cooling device provided in an embodiment of the utility model.

[0023] In the figure, 1. heat exchange tube shell; 2. heat exchange tube core; 3. air inlet and liquid inlet integrated part; 4. liquid inlet joint; 5. air outlet and liquid outlet integrated part; 6. liquid outlet joint; 7. air inlet chamber; 8. liquid inlet chamber; 9. air inlet and liquid inlet baffle; 10. air outlet chamber; 11. liquid outlet chamber; 12. air outlet and liquid outlet baffle; 13. air inlet; 14. liquid inlet; 15. air inlet fixing hole; 16. liquid inlet fixing hole; 17. air outlet; 18. liquid outlet; 19. air outlet fixing hole; 20. liquid outlet fixing hole; 21. pressure difference sensor interface; 22. temperature sensor interface; 23. flat tube; 24. fin; 25. tube sheet. DETAILED DESCRIPTION

[0024] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The embodiment of the utility model provides a compact exhaust gas recirculation cooling device, including a heat exchange shell 1, wherein a heat exchange core 2 is arranged inside the heat exchange shell 1, and further including an air inlet and liquid inlet integrated part 3, a liquid inlet joint 4, an air outlet and liquid outlet integrated part 5 and a liquid outlet joint 6;

[0026] The air inlet and liquid inlet integrated part 3 is connected to one end of the heat exchange tube shell 1, and the air inlet and liquid inlet integrated part 3 includes an air inlet chamber 7 and a liquid inlet chamber 8, and an air inlet and liquid inlet partition 9 is provided between the air inlet chamber 7 and the liquid inlet chamber 8; the liquid inlet joint 4 is connected to the upper part of the heat exchange tube shell 1, and the air inlet chamber 7 is connected to one end of the heat exchange tube core 2; the liquid inlet chamber 8 is connected to the heat exchange tube shell 1 through the liquid inlet joint 4;

[0027] Among them, the gas outlet and liquid outlet integrated part 5 is connected to the other end of the heat exchange tube shell 1, and the gas outlet and liquid outlet integrated part 5 includes a gas outlet chamber 10 and a liquid outlet chamber 11, and a gas outlet and liquid outlet partition 12 is provided between the gas outlet chamber 10 and the liquid outlet chamber 11; the liquid outlet joint 6 is connected to the upper part of the heat exchange tube shell 1, and the gas outlet chamber 10 is connected to the other end of the heat exchange tube core 2; the liquid outlet chamber 11 is connected to the heat exchange tube shell 1 through the liquid outlet joint 6.

[0028] See also Figure 4 In this embodiment, an air inlet 13 is formed at the end of the air inlet chamber 7, and a liquid inlet 14 is formed at the end of the liquid inlet chamber 8; the opening directions of the air inlet 13 and the liquid inlet 14 are vertical; an air inlet fixing hole 15 is provided at the edge of the air inlet 13; and a liquid inlet fixing hole 16 is provided at the edge of the liquid inlet 14.

[0029] Specifically, the exhaust gas to be cooled enters the heat exchange tube core 2 from the air inlet chamber 7 through the air inlet 13, and the coolant enters the heat exchange tube shell 1 from the liquid inlet 14 through the liquid inlet chamber 8 and the liquid inlet joint 4. The air inlet chamber 7 and the liquid inlet chamber 8 are designed as one body and are separated by the air inlet and liquid inlet partition 9 to form independent air inlet channels and liquid inlet channels. The air inlet 13 and the liquid inlet 14 are designed vertically, and the overall structure is more compact.

[0030] The air inlet fixing hole 15 and the liquid inlet fixing hole 16 are also designed to be located on the integral air inlet and liquid inlet integrated part 3, so the support is more stable.

[0031] See also Figure 5 In this embodiment, an air outlet 17 is formed at the end of the air outlet chamber 10, and a liquid outlet 18 is formed at the end of the liquid outlet chamber 11; the opening directions of the air outlet 17 and the liquid outlet 18 are vertical; an air outlet fixing hole 19 is provided at the edge of the air outlet 17; and a liquid outlet fixing hole 20 is provided at the edge of the liquid outlet 18.

[0032] Specifically, the exhaust gas cooled by heat exchange is discharged from the air outlet 17 through the air outlet chamber 10, and the coolant after heat exchange is discharged through the liquid outlet joint 6, the liquid outlet chamber 11, and the liquid outlet 18. The air outlet chamber 10 and the liquid outlet chamber 11 are designed as one body and are separated by the air outlet and liquid outlet partition 12 to form independent air outlet channels and liquid outlet channels. The air outlet 17 and the liquid outlet 18 are designed vertically, and the overall structure is more compact.

[0033] The air outlet fixing hole 19 and the liquid outlet fixing hole 20 are also designed to be located on the integral air outlet and liquid outlet integrated part 5, so that the support is more stable.

[0034] In this embodiment, a differential pressure sensor interface 21 is provided on the side of the gas outlet chamber 10, and the differential pressure sensor interface 21 is used to detect the differential pressure in the gas outlet chamber 10 through the differential pressure sensor; a temperature sensor interface 22 is provided on the side of the gas outlet chamber 10, and the temperature sensor interface 22 is used to detect the temperature in the gas outlet chamber 10 through the temperature sensor. This facilitates monitoring of the differential pressure and temperature of the liquid outlet chamber 11.

[0035] In this embodiment, the heat exchange tube core 2 includes a flat tube 23, and a fin 24 is provided inside the flat tube 23; a fixed tube sheet 25 is connected between the flat tubes 23. The arrangement gap of the heat exchange tube core 2 is appropriately increased, and the liquid inlet 14 with a larger cross-sectional area is matched to reduce the pressure loss of the coolant.

[0036] In summary, the utility model is provided with an air-inlet and liquid-inlet integrated part 3, a liquid-inlet joint 4, an air-outlet and liquid-outlet integrated part 5 and a liquid-outlet joint 6; the air-inlet and liquid-inlet integrated part 3 is connected to one end of the heat exchange tube shell 1, the air-inlet and liquid-inlet integrated part 3 comprises an air-inlet chamber 7 and a liquid-inlet chamber 8, and an air-inlet and liquid-inlet partition 9 is provided between the air-inlet chamber 7 and the liquid-inlet chamber 8; the liquid-inlet joint 4 is connected to the upper part of the heat exchange tube shell 1, the air-inlet chamber 7 is connected to one end of the heat exchange tube core 2; the liquid-inlet chamber 8 is connected to the heat exchange tube shell 1 via the liquid-inlet joint 4; the air-outlet and liquid-outlet integrated part 5 is connected to the other end of the heat exchange tube shell 1, the air-outlet and liquid-outlet integrated part 5 comprises an air-outlet chamber 10 and a liquid-outlet chamber 11, and an air-outlet and liquid-outlet partition 12 is provided between the air-outlet chamber 10 and the liquid-outlet chamber 11; the liquid-outlet joint 6 is connected to the upper part of the heat exchange tube shell 1, the air-outlet chamber 10 is connected to the other end of the heat exchange tube core 2; the liquid-outlet chamber 11 is connected to the heat exchange tube shell 1 via the liquid-outlet joint 6. The exhaust gas to be cooled enters the heat exchange tube core 2 from the air inlet 13 through the air inlet chamber 7, and the coolant enters the heat exchange tube shell 1 from the liquid inlet 14 through the liquid inlet chamber 8 and the liquid inlet joint 4. The air inlet chamber 7 and the liquid inlet chamber 8 are designed as one body and separated by the air inlet and liquid inlet baffle 9 to form an independent air inlet channel and liquid inlet channel. The exhaust gas cooled by heat exchange is discharged from the air outlet 17 through the air outlet chamber 10, and the coolant after heat exchange is discharged through the liquid outlet joint 6, the liquid outlet chamber 11, and the liquid outlet 18. The air outlet chamber 10 and the liquid outlet chamber 11 are designed as one body and separated by the air outlet and liquid outlet baffle 12 to form an independent air outlet channel and liquid outlet channel. A pressure differential sensor interface 21 is provided on the side of the air outlet chamber 10, and the pressure differential sensor interface 21 is used to detect the pressure difference in the air outlet chamber 10 through the pressure differential sensor; a temperature sensor interface 22 is provided on the side of the air outlet chamber 10, and the temperature sensor interface 22 is used to detect the temperature in the air outlet chamber 10 through the temperature sensor. This facilitates monitoring of the pressure difference and temperature of the liquid outlet chamber 11. The utility model has a compact structure and is suitable for engines with limited space; the overall structure is simple and the reliability is high; the coolant inlet cross section is large and the coolant pressure loss is small.

[0037] The above is a relatively specific and detailed description of the utility model through general description and specific embodiments. It should be understood that based on the technical concept of the utility model, some conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not deviate from the technical concept of the utility model, the technical solutions obtained by these conventional adjustments or further innovations also fall within the scope of protection of the claims of the utility model.

Claims

1. A compact exhaust gas recirculation cooling device, comprising a heat exchange shell (1), wherein a heat exchange core (2) is arranged inside the heat exchange shell (1), characterized in that: It also includes an air and liquid inlet integrated part (3), a liquid inlet joint (4), an air and liquid outlet integrated part (5) and a liquid outlet joint (6); The air-inlet and liquid-inlet integrated component (3) is connected to one end of the heat exchange tube shell (1), and the air-inlet and liquid-inlet integrated component (3) comprises an air-inlet chamber (7) and a liquid-inlet chamber (8), and an air-inlet and liquid-inlet partition (9) is provided between the air-inlet chamber (7) and the liquid-inlet chamber (8); the liquid-inlet joint (4) is connected to the upper part of the heat exchange tube shell (1), and the air-inlet chamber (7) is connected to one end of the heat exchange tube core (2); the liquid-inlet chamber (8) is connected to the heat exchange tube shell (1) via the liquid-inlet joint (4); The integrated gas outlet and liquid outlet component (5) is connected to the other end of the heat exchange tube shell (1), and the integrated gas outlet and liquid outlet component (5) comprises a gas outlet chamber (10) and a liquid outlet chamber (11), and a gas outlet and liquid outlet partition (12) is provided between the gas outlet chamber (10) and the liquid outlet chamber (11); the liquid outlet joint (6) is connected to the upper part of the heat exchange tube shell (1), and the gas outlet chamber (10) is connected to the other end of the heat exchange tube core (2); the liquid outlet chamber (11) is connected to the heat exchange tube shell (1) via the liquid outlet joint (6).

2. A compact exhaust gas recirculation cooling device according to claim 1, characterized in that: An air inlet (13) is formed at the end of the air inlet chamber (7), and a liquid inlet (14) is formed at the end of the liquid inlet chamber (8); the opening directions of the air inlet (13) and the liquid inlet (14) are in a vertical state.

3. A compact exhaust gas recirculation cooling device according to claim 2, characterized in that: An air inlet fixing hole (15) is provided at the edge of the air inlet (13); and a liquid inlet fixing hole (16) is provided at the edge of the liquid inlet (14).

4. A compact exhaust gas recirculation cooling device according to claim 1, characterized in that: An air outlet (17) is formed at the end of the air outlet chamber (10), and a liquid outlet (18) is formed at the end of the liquid outlet chamber (11); the opening directions of the air outlet (17) and the liquid outlet (18) are in a vertical state.

5. A compact exhaust gas recirculation cooling device according to claim 4, characterized in that: An air outlet fixing hole (19) is provided at the edge of the air outlet (17); and a liquid outlet fixing hole (20) is provided at the edge of the liquid outlet (18).

6. A compact exhaust gas recirculation cooling device according to claim 1, characterized in that: A pressure difference sensor interface (21) is provided on the side of the air outlet chamber (10), and the pressure difference sensor interface (21) is used to detect the pressure difference in the air outlet chamber (10) through a pressure difference sensor.

7. A compact exhaust gas recirculation cooling device according to claim 1, characterized in that: A temperature sensor interface (22) is provided on the side of the air outlet chamber (10), and the temperature sensor interface (22) is used to detect the temperature inside the air outlet chamber (10) through a temperature sensor.

8. A compact exhaust gas recirculation cooling device according to claim 1, characterized in that: The heat exchange tube core (2) comprises a flat tube (23), and fins (24) are provided inside the flat tube (23); fixed tube sheets (25) are connected between the flat tubes (23).

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