A heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side

Abstract

The utility model provides a heat exchanger structure capable of improving the resistance of the air intake side to cold and hot shocks, comprising a heat exchange shell, the heat exchange shell is axially arranged, and a cavity for accommodating a condenser and a gas to be cooled is formed inside, and both ends of the heat exchange shell are opened and connected to the internal cavity; the water inlet and the water outlet are respectively arranged on the heat exchange shell; the air intake unit and the air outlet guide are respectively installed on the air intake end and the air outlet end of the heat exchange shell; a fixing plate is installed on the side of the air intake unit close to the heat exchange shell, and a grid hole is arranged on the fixing plate, and the grid hole is located inside the heat exchange shell and close to the water inlet. The utility model installs the air intake unit on the side close to the water inlet of the shell, and uses the structure of embedding the fixing plate in the air intake unit to install the heat exchange shell, so as to achieve the effect of contact between the cooling water and the fixing plate, so as to quickly reduce the surface temperature of the air intake side, thereby effectively increasing the number of cold and hot shocks and extending the service life.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to the technical field of the air intake side of the heat exchanger, and specifically to a heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side. Background Art

[0002] With the rise of domestic natural gas engines, the combustion mode of natural gas has changed from oxygen-rich combustion to equivalent combustion in the National VI stage, which has caused the intake temperature of EGR / C to be higher than that of normal diesel engines. Therefore, it is necessary to overcome the difficulty of high temperature resistance of the EGR / C intake side.

[0003] The current traditional type of EGR / C has a fixed plate on the intake side that is far away from the water inlet, which makes it impossible to cool down in time, and the expected high durability in terms of heat and cold shock resistance cannot be achieved. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side, so as to solve the difficulties of the prior art.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a heat exchanger structure capable of improving the cold and hot shock resistance of the air intake side, comprising:

[0006] A heat exchange shell 1, wherein the heat exchange shell 1 is axially arranged, and a cavity is formed inside to accommodate the condenser tube and the gas to be cooled, and both ends of the heat exchange shell 1 are opened and connected to the internal cavity;

[0007] A water inlet 2 and a water outlet 3, wherein the water inlet 2 and the water outlet 3 are respectively arranged on the heat exchange shell 1;

[0008] An air inlet unit and an air outlet guide 4, wherein the air inlet unit and the air outlet guide 4 are respectively mounted on the air inlet end and the air outlet end of the heat exchange housing 1;

[0009] A fixing plate 5 is installed on one side of the air inlet unit close to the heat exchange shell 1 . The fixing plate 5 is provided with grid holes 53 . The grid holes 53 are located inside the heat exchange shell 1 and close to the water inlet 2 .

[0010] According to the preferred solution, the air intake unit is provided with an airflow guide 6, a connecting plate 7 and a fixing plate 5 in sequence along the direction close to the heat exchange shell 1, and the airflow guide 6, the connecting plate 7 and the fixing plate 5 are installed on the flange surface of the heat exchange shell 1 by bolts;

[0011] The connecting plate 7 is provided with a through hole for passing the gas to be cooled, and the size of the through hole is larger than the size of the grid hole 53 of the fixing plate 5 .

[0012] According to a preferred solution, the airflow guide 6 and the connecting plate 7 are both arranged on the outer side of the heat exchange shell 1 .

[0013] According to a preferred embodiment, the fixing plate 5 comprises:

[0014] A fixed plate support frame 51, wherein the fixed plate support frame 51 is installed on the heat exchange shell 1 and is disposed inside the heat exchange shell 1;

[0015] A fixed plate connection end 52, where one end of the fixed plate support frame 51 away from the heat exchange shell 1 integrally extends in a vertical direction around to form the fixed plate connection end 52;

[0016] The grid holes 53 are formed in the fixed plate support frame 51 through the grids connected as a whole to form grid holes 53 for the gas to be cooled to pass through.

[0017] According to a preferred embodiment, the fixing plate connecting end 52 has the same shape as the connecting plate 7 and is provided with a bolt connecting hole 54 in advance.

[0018] According to a preferred solution, there is a gap between the outer walls of the fixed plate support frame 51 and the inner wall of the heat exchange shell 1 .

[0019] According to a preferred solution, the water inlet 2 is disposed at the bottom of the heat exchange shell 1 , and the port of the water inlet 2 located in the heat exchange shell 1 is disposed close to the grid hole 53 .

[0020] According to a preferred embodiment, the water inlet 2 is arranged to be inclined in the longitudinal direction, and the side located inside the heat exchange shell 1 is closer to the grid hole 53 than the bottom side.

[0021] The utility model installs an air intake unit on a side close to the water inlet of the shell, and utilizes the structure of embedding a fixing plate inside the air intake unit to install the heat exchange shell, so as to achieve the effect of contact between cooling water and the fixing plate, thereby quickly reducing the surface temperature of the air intake side, thereby effectively increasing the number of cold and hot shocks and extending the service life.

[0022] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0024] Figure 2 Shown is an enlarged schematic diagram of the three-dimensional structure of the air intake unit in the present utility model;

[0025] Figure 3 Shown is an enlarged schematic diagram of a partial three-dimensional structure of an air intake unit in the present utility model;

[0026] Figure 4 Shown is an enlarged schematic diagram of the three-dimensional structure of the fixing plate in the present utility model;

[0027] Figure 5 Shown is a partial cross-sectional view of the utility model;

[0028] Description of symbols

[0029] 1. Heat exchange shell; 2. Water inlet; 3. Water outlet; 4. Air outlet guide; 5. Fixed plate, 51. Fixed plate support frame, 52. Fixed plate connection end, 53. Grid hole, 54. Bolt connection hole; 6. Airflow guide; 7. Connecting plate. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0032] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0033] The utility model proposes a heat exchanger structure capable of improving the resistance of the intake side to cold and hot shocks, which is used in the heat exchanger design process. The utility model does not limit the type of combustion method, but the heat exchanger structure capable of improving the resistance of the intake side to cold and hot shocks is particularly suitable for the equivalent combustion method.

[0034] In general, the heat exchanger structure proposed by the present invention that can improve the cold and hot shock resistance of the air inlet side mainly includes a heat exchange shell 1, a water inlet 2 and a water outlet 3, an air inlet unit and an air outlet guide 4. Figure 1 , which shows the arrangement relationship of the heat exchange shell 1, the water inlet 2 and the water outlet 3, the air inlet unit and the air outlet guide 4.

[0035] In order to achieve the purpose of reducing the surface temperature of the EGR / C intake side and increasing the number of hot and cold shocks, the problem of replacing machines and molds for different processes such as stamping and forming in the background technology is solved. To this end, in the technical solution provided in this embodiment, an intake unit is installed on the side close to the water inlet of the shell, and the structure of the heat exchange shell 1 is embedded in the fixed plate 5 in the intake unit to achieve the effect of contact between the cooling water and the fixed plate 5, so as to quickly reduce the surface temperature of the intake side, thereby effectively increasing the number of hot and cold shocks and extending the service life.

[0036] like Figure 1 As shown, the heat exchange shell 1 is axially arranged. According to the principle of the engine heat exchange structure, a cavity for accommodating the condenser and the gas to be cooled is formed inside the heat exchange shell 1. Both ends of the heat exchange shell 1 are opened and connected to the internal cavity. The air intake unit and the air outlet guide 4 are respectively installed on the air intake end and the air outlet end of the heat exchange shell 1, and the water inlet 2 and the water outlet 3 used for cooling and heat exchange are respectively arranged on the heat exchange shell 1.

[0037] It should be specifically explained that, in order to effectively reduce the temperature on the EGR / C intake side, in the present embodiment, a fixing plate 5 is installed on one side of the intake unit close to the heat exchange shell 1, wherein the fixing plate 5 is provided with a grid hole 53. During installation, the grid hole 53 is located inside the heat exchange shell 1 and close to the water inlet 2.

[0038] Specifically, the air intake unit provided in this embodiment is provided with an airflow guide 6, a connecting plate 7 and a fixing plate 5 in sequence along the direction close to the heat exchange shell 1. The airflow guide 6, the connecting plate 7 and the fixing plate 5 are installed on the flange surface on the air intake side of the heat exchange shell 1 by bolts, wherein the airflow guide 6 and the connecting plate 7 are both arranged on the outer surface of the heat exchange shell 1. In order to avoid affecting the gas introduced from the airflow guide 6, a through hole for passing the gas to be cooled is opened in the connecting plate 7, and the size of the through hole is larger than the size of the grid hole 53 of the fixing plate 5.

[0039] As mentioned above, considering the position correspondence between the fixed plate 5 and the condensed water, on the one hand, the fixed plate 5 is set to include a fixed plate support frame 51, a fixed plate connection end 52 and a grid hole 53, wherein the fixed plate support frame 51 is arranged inside the heat exchange shell 1 after being installed on the heat exchange shell 1, and the four sides of the fixed plate support frame 51 are arranged horizontally, parallel to the inner surface of the heat exchange shell 1, and on the basis of the coaxial arrangement of the two, there is a gap between the outer side walls of the fixed plate support frame 51 and the inner wall of the heat exchange shell 1 for the passage of the condensed water flow; next, in order to achieve the fixed For the stable installation of the plate 5, one end of the fixed plate supporting frame 51 away from the heat exchange shell 1 is integrally extended in the vertical direction around to form a fixed plate connecting end 52. The fixed plate connecting end 52 has the same appearance as the connecting plate 7 and is preset with a bolt connecting hole 54, and the bolts are passed through the bolt connecting hole 54 to achieve fastening installation; and the fixed plate supporting frame 51 is located in the fixed plate supporting frame 51 and is integrally connected through a grid to form a grid hole 53 for the gas to be cooled to pass through, which facilitates the flow of gas and avoids aggregation. It can also ensure that the condensation unit in the heat exchange shell 1 can cooperate with the condensed water to achieve an effective and rapid cooling effect.

[0040] On the other hand, since the fixing plate support frame 51 of the fixing plate 5 is arranged inside the heat exchange shell 1, in order to achieve sufficient contact with the condensed water introduced into the heat exchange shell 1, the water inlet on the heat exchange shell 1 is arranged at the bottom, and the port of the water inlet 2 located in the heat exchange shell 1 is arranged close to the grid hole 53; in addition, in order to further enhance the contact area between the condensed water and the grid hole 53 and reduce the distance and time for the water to flow to the grid hole, the water inlet 2 is longitudinally inclined, and the side located inside the heat exchange shell 1 is closer to the grid hole 53 than the bottom side, so that the condensed water is closer to the fixing plate 5 and the surface temperature drops faster, thereby more effectively increasing the number of hot and cold shocks.

[0041] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side, characterized in that: include: A heat exchange shell (1), the heat exchange shell (1) is arranged axially, and a cavity is formed inside to accommodate the condenser tube and the gas to be cooled, and both ends of the heat exchange shell (1) are opened and connected to the internal cavity; A water inlet (2) and a water outlet (3), wherein the water inlet (2) and the water outlet (3) are respectively arranged on the heat exchange shell (1); An air inlet unit and an air outlet guide (4), wherein the air inlet unit and the air outlet guide (4) are respectively mounted on the air inlet end and the air outlet end of the heat exchange shell (1); A fixing plate (5) is installed on one side of the air inlet unit close to the heat exchange shell (1), and a grid hole (53) is provided on the fixing plate (5). The grid hole (53) is located inside the heat exchange shell (1) and close to the water inlet (2).

2. The heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side according to claim 1, characterized in that: The air intake unit is provided with an airflow guide (6), a connecting plate (7) and a fixing plate (5) in sequence along a direction close to the heat exchange shell (1); the airflow guide (6), the connecting plate (7) and the fixing plate (5) are mounted on a flange surface of the heat exchange shell (1) via bolts; The connecting plate (7) is provided with a through hole for passing the gas to be cooled, and the size of the through hole is larger than the size of the grid hole (53) of the fixing plate (5).

3. The heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side according to claim 2, characterized in that: The fixing plate (5) comprises: A fixed plate support frame (51), wherein the fixed plate support frame (51) is arranged inside the heat exchange shell (1) after being installed on the heat exchange shell (1); A fixed plate connection end (52), wherein one end of the fixed plate support frame (51) away from the heat exchange shell (1) integrally extends in a vertical direction around the fixing plate connection end (52); Grid holes (53), the fixed plate support frame (51) is integrally connected by grids to form grid holes (53) for the gas to be cooled to pass through.

4. The heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side according to claim 3, characterized in that: There is a gap between the outer walls of the fixed plate support frame (51) and the inner wall of the heat exchange shell (1).

5. The heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side according to claim 4, characterized in that: The water inlet (2) is arranged at the bottom of the heat exchange shell (1), and is arranged near the grid hole (53) at the end of the water inlet (2) inside the heat exchange shell (1).

6. The heat exchanger structure capable of improving the cold and heat shock resistance of the air intake side according to claim 5, characterized in that: The water inlet (2) is arranged in a longitudinally inclined manner, and the side located inside the heat exchange shell (1) is closer to the grid hole (53) than the bottom side.

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