CN206291774U - A kind of end enclosure structure with flow deflector - Google Patents

Abstract

The utility model discloses a kind of end enclosure structure with flow deflector.End enclosure structure case top inlet porting pipe described in the utility model, flow deflector is symmetrical set in end enclosure structure housing, and each flow deflector is 40 60 degree with the angle of end enclosure structure housing bottom surface, and end enclosure structure housing bottom surface sets outlet.End enclosure structure with flow deflector of the present utility model is applied to plate-fin heat exchanger, flow deflector in the end enclosure structure can be shunted the fluid of inflow heat exchanger, fluid is distributed by flow deflector, fluid is avoided to occur middle flow when entering heat exchanger big, the small situation of both sides flow, overall structure is simple, realizes that the fluid tissue in heat exchanger is uniformly distributed, and improves heat exchange efficiency.

Description

A head structure with deflectors

technical field

The utility model relates to a head structure, more specifically, a head structure with a guide plate.

Background technique

Whether in flow or heat exchange equipment, there is a phenomenon of uneven fluid distribution, especially in plate-fin heat exchangers, this phenomenon is more serious, and fluid distribution will also affect the heat transfer process, which may cause its getting worse. Heat transfer leads to an inhomogeneous temperature field, which makes the physical processes uncoordinated and thus inhomogeneous flow. Such a process of continuous influence, coupled cross-interaction. The flow field of the fluid inside the plate-fin heat exchanger is greatly affected by its head structure, and uniform incoming flow is a necessary condition to make the internal flow field of the equipment uniform. Fluid uniformity is determined by the head structure type, incoming flow conditions and fluid characteristics. Existing experimental research also shows that the unevenness of fluid distribution exists inside the heat exchanger, and the performance of the heat exchanger is affected by the unevenness of its internal fluid distribution. At present, the head of the plate-fin heat exchanger cannot effectively solve the above-mentioned problems. The most prominent one is that the flow velocity at the inlet of the head structure is large in the middle and small on both sides, which causes the fluid to be distributed unevenly in the deflector, resulting in Uneven distribution of fluid inside the heat exchanger.

Utility model content

The utility model aims to overcome the deficiencies in the prior art, and provides a head structure with simple structure and low cost, which can realize uniform distribution of fluid inside the plate-fin heat exchanger.

A head structure with deflectors, the top of the head structure shell is provided with an inlet pipe, the inside of the head structure shell is symmetrically arranged with flow guides, and the angle between each flow guide and the bottom surface of the head structure shell is It is 40-60 degrees, and the bottom surface of the shell of the head structure is provided with an outlet.

The utility model has the following technical effects:

The head structure with deflectors of the utility model is suitable for plate-fin heat exchangers. The deflectors in the head structure can divert the fluid flowing into the heat exchanger, rely on the flow guides to distribute the fluid, and avoid fluid When entering the heat exchanger, the flow in the middle is large and the flow on both sides is small. The overall structure is simple, and the fluid tissue in the heat exchanger is evenly distributed to improve the heat exchange efficiency.

Description of drawings

Fig. 1 is a schematic diagram of a head structure with deflectors of the present invention.

detailed description

Fig. 1 is a schematic diagram of a head structure with deflectors of the utility model patent, including an inlet pipe 1, a head structure shell 2, a flow guide plate 3, and an outlet 4, and the top of the head structure shell 2 is set The inlet pipe 1 and the left and right baffles 3 are arranged symmetrically in the shell of the head structure. The angle between each baffle and the bottom of the shell is 40-60 degrees.

The fluid entering the plate-fin heat exchanger enters the head structure through the inlet pipe, and then divides the fluid entering the shell through the guide vane, and relies on the guide vane to distribute it into the plate-fin heat exchanger, effectively avoiding the The flow rate of the fluid in the middle is too large and the flow rate on both sides is small, which ensures that the flow rate of the same cross-section entering the heat exchanger remains uniform, so that the fluid distribution at the outlet of the head structure is uniform, and when entering the heat exchanger, the fluid is evenly distributed in the heat exchanger allocation.

Claims (1)

1. a kind of end enclosure structure with flow deflector, it is characterised in that the end enclosure structure case top inlet porting pipe, end socket knot Flow deflector is symmetrical set in structure housing, each flow deflector is 40-60 degree, end socket knot with the angle of end enclosure structure housing bottom surface Structure housing bottom surface sets outlet.