CN219103805U - Heat exchange plate of plate heat exchanger for refrigerating and heating air conditioner - Google Patents
Heat exchange plate of plate heat exchanger for refrigerating and heating air conditioner Download PDFInfo
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- CN219103805U CN219103805U CN202320138320.8U CN202320138320U CN219103805U CN 219103805 U CN219103805 U CN 219103805U CN 202320138320 U CN202320138320 U CN 202320138320U CN 219103805 U CN219103805 U CN 219103805U
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Abstract
The utility model discloses a heat exchange plate of a plate heat exchanger for refrigerating and heating of an air conditioner, which comprises a plurality of heat exchange plates arranged between a fixed compression plate and a movable compression plate in the plate heat exchanger, wherein the heat exchange plates are rectangular with high length-width ratio, four right-angle positions of the rectangular heat exchange plates are respectively provided with an angular hole, and the heat exchange plates are also provided with hanging holes; the main heat exchange area of the heat exchange plate is provided with double-square-shaped waves, and the periphery of the corner hole of the heat exchange plate is provided with the double-square-shaped waves; the heat exchange plate is formed by combining double corrugated plates; the runner of the heat exchange plate comprises a hot fluid channel and a cold fluid channel; the thermal fluid channel is formed by forming contacts between adjacent double-square corrugated plates which are symmetrically arranged in the first plate group; the cold fluid passage is formed by contact points formed between adjacent first plate sets. The utility model can improve the heat exchange efficiency of the plate heat exchanger and solve the problem that the heat exchange effect cannot be achieved due to small temperature difference.
Description
Technical Field
The utility model relates to the field of plate heat exchangers used in heating, ventilation, refrigeration and other industries, in particular to a heat exchange plate of a plate heat exchanger used for refrigerating and heating of an air conditioner.
Background
The plate heat exchanger is a novel high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes. Thin rectangular channels are formed between the various plates through which heat is exchanged. Compared with the conventional shell-and-tube heat exchanger, the heat transfer coefficient of the heat exchanger is much higher under the condition of the same flow resistance and pump power consumption, and the heat exchanger has the trend of replacing the shell-and-tube heat exchanger in the applicable range.
Plate heat exchangers are used as ideal equipment for liquid-liquid and liquid-vapor heat exchange. The heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, convenient installation and cleaning, wide application, long service life and the like. Under the same pressure loss, the heat transfer coefficient is 3-5 times higher than that of the tubular heat exchanger, the occupied area is one third of that of the tubular heat exchanger, and the heat recovery rate can be up to more than 90%. The plate heat exchanger is widely applied to industries such as metallurgy, petroleum, chemical industry, food, pharmacy, ships, textile, paper making and the like, and is excellent equipment for heating, cooling, heat recovery, quick sterilization and the like.
In the application of air conditioner refrigeration or heating, the temperature difference requirement is higher, the logarithmic temperature difference requirement is less than or equal to 1 ℃ in extreme cases, the heat exchanger is required to have higher heat exchange efficiency, the traditional heat exchange plate is often not capable of achieving a heat exchange effect, a certain heat exchange amount is achieved by increasing the heat exchange area, and the process can enable the flow velocity between the plates to be too low, so that part of plates do not exchange heat sufficiently.
Therefore, it is needed to design a new heat exchange plate of the plate heat exchanger, which can not only improve the heat exchange efficiency of the plate heat exchanger, but also save the heat exchange area.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide the heat exchange plate of the plate heat exchanger for refrigerating and heating of the air conditioner, which not only can improve the heat exchange efficiency of the plate heat exchanger, but also can save the heat exchange area, and solves the problem that the heat exchange effect cannot be achieved due to small temperature difference.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a heat exchange plate of a plate heat exchanger for refrigerating and heating of an air conditioner, which comprises a plurality of heat exchange plates arranged between a fixed compression plate and a movable compression plate in the plate heat exchanger, wherein the heat exchange plates are in a rectangular shape with high length-width ratio, four right-angle positions of the rectangular heat exchange plates are respectively provided with an angle hole, and the heat exchange plates are also provided with hanging holes;
the main heat exchange area of the heat exchange plate is provided with double-square-shaped waves, and the periphery of the corner hole of the heat exchange plate is provided with the double-square-shaped waves;
the heat exchange plate is formed by combining double corrugated plates;
the runner of the heat exchange plate comprises a hot fluid channel and a cold fluid channel; the thermal fluid channel is formed by contacts formed between adjacent double-square corrugated plates which are symmetrically arranged in the first plate group; the cold fluid passage is formed by contacts formed between adjacent first plate sets.
Preferably, in the thermal fluid channel, the cross section of the double corrugated plate is in a corrugated structure formed by sequentially connecting isosceles trapezoids.
Preferably, in the main heat exchange area of the heat exchange plate, the included angle α of the herringbone corrugation is 130 °.
Preferably, the included angle of the herringbone corrugation of the periphery of the angular hole is 130 °.
Preferably, the rectangular shaped heat exchanger plates have an aspect ratio of 3.3.
Preferably, the heat exchange plate is made of stainless steel or titanium.
Preferably, the heat exchange plate is clamped between the fixed compression plate and the movable compression plate by bolts.
The utility model has the following beneficial effects:
the heat exchange plate of the plate heat exchanger for air conditioner refrigeration and heating is convenient to install and maintain, and the heat exchange area of the air conditioner refrigeration and heating working conditions is greatly reduced. Through the reasonable design of the cross section of the flow channel, compared with the traditional plate assembly after the heat exchange plate is adopted, the problem that the heat exchange effect cannot be achieved due to small temperature difference is solved. After the heat exchange plate of the plate heat exchanger for refrigerating and heating of the air conditioner is adopted, the heat exchange efficiency can be improved, the heat exchange area can be saved, and the running and maintenance cost of equipment can be reduced.
Drawings
Fig. 1 is a schematic view of the structure of a heat exchange plate of a plate heat exchanger for cooling and heating an air conditioner according to the present utility model;
FIG. 2 is an enlarged view of double-letter corrugations in a main flow area of the present utility model;
FIG. 3 is a schematic diagram of the structure of a hot fluid pipe and a cold fluid pipe formed by heat exchange plates of a plate heat exchanger for refrigerating and heating an air conditioner;
in the drawing, 10 is a main flow area, 11 is an angular hole, 12 is a hot fluid channel, 13 is a cold fluid channel, and 14 is a first plate group.
Detailed Description
In order to better understand the above technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to examples.
The temperature difference of refrigeration or heating is very close to the temperature difference of heating, ventilation and refrigeration in the heating industry, and the logarithmic temperature difference in the extreme state is less than or equal to 1 ℃, so that the heat exchange efficiency of the heat exchange equipment is high, and the heat exchange requirement can be met. Most of the traditional plate heat exchangers adopt a mode of increasing heat exchange area, and the heat exchange effect is not high because the mode can reduce the flow velocity between the plates. Part of the heat exchange plates can also cause waste of heat exchange area because the reduction of the flow rate can not reach the expected effect.
The utility model aims at a plate heat exchanger special for refrigeration and heating in heating ventilation or refrigeration industry. After the heat exchange plate provided by the utility model is adopted, the heat exchange area of the same working condition before can be obviously reduced; the high-efficiency small-temperature-difference heat exchange plate provided by the utility model has the advantages that the flow speed between plates is faster, and the total heat transfer coefficient can be improved. Meanwhile, the main heat exchange area is designed into efficient double-square waves, and the included angle theta of the double-square waves is designed to be 130 degrees, so that the heat transfer coefficient is greatly improved.
Conventional plate heat exchangers in use today are mainly assembled from identical corrugated sheets. The plate is clamped between the fixed compression plate and the movable compression plate by bolts, a plurality of flow passages are formed in the heat exchanger, and the plates are sealed by rubber. The heat exchange plate is formed by pressing high-quality corrosion-resistant metal sheets, corner holes for medium to enter and exit are punched at four corners, and hanging holes are formed in the upper portion and the lower portion. The herringbone corrugation can increase disturbance to the fluid, so that the fluid can reach a turbulent flow state at a low speed, and a high heat transfer effect is obtained. The section of the flow passage adopts a special corrugated structure, so that two fluid media can not leak in series.
Referring to fig. 1 to 3, the heat exchange plate of the plate heat exchanger for refrigerating and heating of the air conditioner of the utility model comprises a plurality of heat exchange plates arranged between a fixed compression plate and a movable compression plate in the plate heat exchanger, the heat exchange plates are rectangular with high length-width ratio (the length-width ratio is 3.3), the four right-angle positions of the rectangular heat exchange plates are respectively provided with an angular hole 11, and the heat exchange plates are also provided with hanging holes.
With reference to fig. 1, the flow field distribution of the heat exchange plates of the plate heat exchanger is more uniform, and the plate heat exchanger is more suitable for occasions with smaller cold and hot temperature differences in heating, ventilation or refrigeration industries, and the main heat exchange area 10 of the heat exchange plates is provided with double-square waves (shown in fig. 1 and 2), wherein the included angle alpha of the double-square waves is 130 degrees (shown in fig. 2); the periphery of the angle hole of the heat exchange plate is provided with herringbone waves, and the included angle of the herringbone waves is 130 degrees; the herringbone corrugation arrangement can have higher heat transfer coefficient under the condition of the same treatment capacity.
The combination body is shown in fig. 1 and 3, and the heat exchange plate is formed by combining double corrugated plates; the flow channels of the heat exchange plates comprise hot fluid channels 12 and cold fluid channels 13; the thermal fluid channel 12 is formed by contacts formed between adjacent and symmetrically arranged double corrugated plates in the first plate set 14; the cold fluid channel 13 is formed by contacts formed between adjacent first plate sets 14. In the hot fluid channel, as shown in fig. 3, the cross sections of the plates of the double-square corrugated structure are sequentially connected by isosceles trapezoids, in a specific embodiment, the cross sections of the hot fluid channel 12 and the cold fluid channel 13 are hexagons formed by isosceles trapezoids with opposite openings, and 4 hot fluid channels 12 are arranged around each cold fluid channel 13.
In a specific embodiment, the heat exchange plates are made of stainless steel or titanium.
In a specific embodiment, the heat exchanger plates are clamped between the fixed and movable pinch plates by bolts.
The utility model can improve the flow velocity between the plates under the same flow state by designing the heat exchange plates, and can meet the working condition requirement. Therefore, the heat exchange area can be reduced under the condition of meeting the design requirement, thereby greatly reducing the production and manufacturing cost of the heat exchanger, leading the manufacturing cost of the whole plate heat exchanger to be more economical and being convenient for installation and maintenance.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the utility model, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the utility model as long as they fall within the true spirit of the utility model.
Claims (7)
1. The heat exchange plate of the plate heat exchanger for refrigerating and heating of the air conditioner comprises a plurality of heat exchange plates arranged between a fixed compression plate and a movable compression plate in the plate heat exchanger, and is characterized in that the heat exchange plates are rectangular with high length-width ratio, four right-angle positions of the rectangular heat exchange plates are respectively provided with an angle hole, and the heat exchange plates are also provided with hanging holes;
the main heat exchange area of the heat exchange plate is provided with double-square-shaped waves, and the periphery of the corner hole of the heat exchange plate is provided with the double-square-shaped waves;
the heat exchange plate is formed by combining double corrugated plates;
the runner of the heat exchange plate comprises a hot fluid channel and a cold fluid channel; the thermal fluid channel is formed by contacts formed between adjacent double-square corrugated plates which are symmetrically arranged in the first plate group; the cold fluid passage is formed by contacts formed between adjacent first plate sets.
2. The heat exchange plate of a plate heat exchanger for air conditioning and refrigerating and heating according to claim 1, wherein in the hot fluid channel, the cross sections of the plates of double-square-shaped corrugation are of a corrugated structure which are sequentially connected by isosceles trapezoids.
3. A heat exchanger plate for a plate heat exchanger for air conditioning and cooling and heating according to claim 1, wherein the included angle α of the chevron-shaped corrugations is 130 ° in the main heat exchange zone of the heat exchanger plate.
4. A heat exchanger plate for a plate heat exchanger for air conditioning and cooling and heating according to claim 1, wherein the included angle of the herringbone corrugation of the periphery of the angular hole is 130 °.
5. A heat exchanger plate for a plate heat exchanger for air conditioning and cooling and heating according to claim 1, wherein the rectangular heat exchanger plate has an aspect ratio of 3.3.
6. A heat exchange plate for a plate heat exchanger for air conditioning and cooling and heating according to claim 1, wherein the heat exchange plate is made of stainless steel or titanium.
7. A heat exchanger plate for a plate heat exchanger for air conditioning and cooling and heating according to claim 1, wherein the heat exchanger plate is clamped between the fixed and movable hold-down plates by bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138320.8U CN219103805U (en) | 2023-02-07 | 2023-02-07 | Heat exchange plate of plate heat exchanger for refrigerating and heating air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138320.8U CN219103805U (en) | 2023-02-07 | 2023-02-07 | Heat exchange plate of plate heat exchanger for refrigerating and heating air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219103805U true CN219103805U (en) | 2023-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320138320.8U Active CN219103805U (en) | 2023-02-07 | 2023-02-07 | Heat exchange plate of plate heat exchanger for refrigerating and heating air conditioner |
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| Country | Link |
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| CN (1) | CN219103805U (en) |
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2023
- 2023-02-07 CN CN202320138320.8U patent/CN219103805U/en active Active
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