Different-channel efficient plate heat exchanger

Abstract

The utility model relates to a different-channel efficient plate heat exchanger which comprises stacked plates, each plate is composed of a plate A and a plate B. The plate A is provided with a plate A protruding part and a plate A concave part, the plate B is provided with a plate B protruding part and a plate B concave part, the single plate A and the single plate B form a plate structure, a large medium channel is formed between the plate A protruding part and the plate B concave part, and the large medium channel is communicated with the plate A protruding part and the plate B concave part. The two adjacent plate structures are oppositely arranged, so that the two adjacent B sheets are oppositely arranged, and a small medium channel is formed between the protruding parts of the two B sheets. According to the different-channel efficient plate heat exchanger, a plate channel is divided into two different channels, a liquid medium with low flowability is introduced into one channel, high temperature and high pressure can be borne, local deformation or bulging or plate tearing cannot occur, and the different-channel efficient plate heat exchanger is suitable for various high-temperature and high-pressure application fields; and as for the refrigerant media, the smaller the channels are, the larger the expansion coefficient is, and the better the heat exchange effect is.

Description

Technical Field

[0001] The utility model relates to a different-channel high-efficiency plate heat exchanger. Background Art

[0002] Plate heat exchanger is a high-efficiency and energy-saving heat exchange equipment with many advantages such as high heat transfer efficiency, light weight, small footprint, easy maintenance, etc. Plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates, and heat is exchanged through the plates; the cross-corrugation between the plates not only forms a channel, but also has a pressure-bearing and fixing effect.

[0003] Traditional plate heat exchangers can only exchange heat for conventional liquids or gases. If the liquid medium is not so fluid, such as a viscous liquid medium with a lot of particles, it cannot pass smoothly. If the liquid flow is increased, once the plate is subjected to the high temperature and high pressure of the medium, local deformation or bulging is likely to occur. The greater the deformation, the larger the tearing space of the plate, which will eventually lead to internal leakage and scrap. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a high-efficiency plate heat exchanger with different channels that can withstand high temperature and high pressure and avoid deformation or tearing.

[0005] The purpose of the utility model is achieved in this way:

[0006] A different-channel high-efficiency plate heat exchanger, comprising stacked plates, with heat exchange channels formed between the plates, a front end plate being provided at the front end of the stacked plates, and a rear end plate being provided at the rear end, the front end plate and the rear end plate pressing and fixing the plates in the middle, and medium through holes being provided at the same position on the plates, the front end plate and the rear end plate;

[0007] The plate is composed of an A plate and an A plate concave portion, wherein the A plate has an A plate convex portion and an A plate concave portion, and the B plate has a B plate convex portion and a B plate concave portion, and a single A plate and a B plate form a group of plate structures, a large medium channel is formed between the A plate convex portion and the B plate concave portion, and two adjacent plate structures are placed oppositely, so that two adjacent B plates are placed oppositely, and a small medium channel is formed between the convex portions of the two B plates.

[0008] Both A and B sheets are corrugated sheets.

[0009] The medium through holes are respectively connected with the heat exchange channels on the plates.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] This heterogeneous channel high-efficiency plate heat exchanger divides the plate channel into two heterogeneous channels. One channel is used to pass a liquid medium with low fluidity, which can withstand high temperature and high pressure without local deformation, bulging or plate tearing, making it suitable for various high temperature and high pressure application fields; the other channel is used to pass a cold medium or gas with high fluidity. For the cold medium, the smaller the channel, the greater the expansion coefficient, so that the heat exchange effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the plates in the utility model of the high-efficiency plate heat exchanger with different channels.

[0013] Figure 2 for Figure 1 Enlarged view of part A.

[0014] Figure 3 for Figure 1 Enlarged view of part B.

[0015] Figure 4 This is the front view of the heterogeneous channel high-efficiency plate heat exchanger.

[0016] Figure 5 It is a top view of the heterogeneous channel high-efficiency plate heat exchanger.

[0017] Among them: plate 1, front end plate 2, rear end plate 3, medium through hole 4, A plate 5, A plate protrusion 5.1, A plate recess 5.2, B plate 6, B plate protrusion 6.1, B plate recess 6.2, large medium channel 7, small medium channel 8. DETAILED DESCRIPTION

[0018] See also Figures 1 to 5 The utility model relates to a high-efficiency plate heat exchanger with different channels, which includes stacked plates 1, with heat exchange channels formed between the plates 1, a front end plate 2 is provided at the front end of the stacked plates 1, and a rear end plate 3 is provided at the rear end thereof, the front end plate 2 and the rear end plate 3 press and fix the middle plate 1, and medium through holes 4 are opened at the same position on the plates 1, the front end plate 2 and the rear end plate 3, and the medium through holes 4 are respectively connected with the heat exchange channels on the plates 1, and cold and hot media flow in and out from different medium through holes 4, thereby completing the heat exchange of the liquid.

[0019] like Figures 3 to 5 The plate 1 is composed of an A plate 5 and a B plate 6, both of which are corrugated plates, wherein the A plate 5 has an A plate protrusion 5.1 and an A plate recess 5.2, and the B plate 6 has a B plate protrusion 6.1 and a B plate recess 6.2. A single A plate 5 and B plate 6 form a group of plate structures, and a large medium channel 7 is formed between the A plate protrusion 5.1 and the B plate recess 6.2.

[0020] Different from the previous plate structure being arranged in the same direction, in this design, two adjacent plate structures are placed oppositely, so that two adjacent B plates 6 are placed oppositely, and a small medium channel 8 is formed between the raised portions 6.1 of the two B plates 6. In this way, the large medium channel 7 and the small medium channel 8 are transformed into a heterogeneous channel structure of the plate heat exchanger.

[0021] The large medium channel 7 is used to pass liquid media with low fluidity, such as viscous liquid media with a lot of particles, which are not prone to deformation, bulging, tearing, and leakage; the small medium channel 8 is used to pass cold media or gas with high fluidity. For cold media, the smaller the channel, the greater the expansion coefficient, so that the heat exchange effect is better.

Claims

1. Different channel high efficiency plate heat exchanger, its characteristics are: It includes stacked plates, with heat exchange channels formed between the plates. The front end of the stacked plates is provided with a front plate, and the rear end is provided with a rear plate. The front plate and the rear plate press and fix the plates in the middle. The plates, the front plate and the rear plate are provided with medium through holes at the same position. The plate is composed of an A plate and an A plate concave portion, wherein the A plate has an A plate convex portion and an A plate concave portion, and the B plate has a B plate convex portion and a B plate concave portion, and a single A plate and a B plate form a group of plate structures, a large medium channel is formed between the A plate convex portion and the B plate concave portion, and two adjacent plate structures are placed oppositely, so that two adjacent B plates are placed oppositely, and a small medium channel is formed between the convex portions of the two B plates.

2. The different-channel high-efficiency plate heat exchanger according to claim 1 is characterized in that: Both A and B sheets are corrugated sheets.

3. The different-channel high-efficiency plate heat exchanger according to claim 1 is characterized in that: The medium through holes are respectively connected with the heat exchange channels on the plates.

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