Heat exchange assembly, dairy product cooling system and dairy product production line

Abstract

The invention relates to the technical field of cooling equipment, and discloses a heat exchange assembly, a dairy product cooling system and a dairy product production line, the heat exchange assembly is suitable for cooling dairy products, has a first direction and a second direction which are intersected, and comprises at least one heat exchange plate, and the heat exchange plate comprises a plurality of heat exchange channels; the heat exchange channels are arranged side by side in the first direction and extend in the second direction. According to the heat exchange assembly, the dairy product cooling system and the dairy product production line, the problems that dairy products are poor in product quality and short in quality guarantee period can be solved or improved.

Description

Technical Field

[0001] The present application relates to the technical field of cooling equipment, and in particular to a heat exchange component, a dairy cooling system and a dairy production line. Background Art

[0002] Dairy products are rich in high-quality protein, calcium and multiple vitamins, and are an important source of nutrition for maintaining good health. Dairy products are made from fresh cow (sheep) milk and its products as the main raw materials, are made through different processing steps, and then are refrigerated, stored and transported.

[0003] In the related art, the temperature of dairy products is relatively high after fermentation, and they need to be cooled down by a heat exchange system with heat exchange plates before filling and storage.

[0004] However, in the process of cooling down dairy products, the heat exchange system can only reduce the temperature of dairy products to 15°C for filling while ensuring the quality of dairy products. Therefore, before storing the filled dairy products, they need to be cooled down again to 10°C in the transit warehouse before they can be stored. During this period, the dairy products will ferment again, affecting the quality of the dairy products, and will also breed bacteria, affecting the shelf life of the dairy products. Summary of the invention

[0005] The present application provides a heat exchange component, a dairy product cooling system and a dairy product production line to solve or improve the problems of poor product quality and short shelf life of dairy products.

[0006] In a first aspect, the present application provides a dairy product cooling system having an intersecting first direction and a second direction, comprising a heat exchange plate, wherein the heat exchange plate comprises a heat exchange channel, a plurality of heat exchange channels are provided and arranged side by side along the first direction, and each of the heat exchange channels extends along the second direction.

[0007] Beneficial effects: By arranging the heat exchange channel in a straight line in the heat exchange plate, the bending of the heat exchange channel can be reduced during the movement of dairy products in the heat exchange channel, thereby reducing mechanical damage to the dairy products and avoiding deterioration of the dairy product structure. Under the premise of ensuring the stability of the dairy product structure, the heat exchange length of the dairy products can be increased, the temperature of the dairy products can be reduced to a lower temperature, the fermentation rate of the dairy products in the subsequent processing process can be reduced, and the growth of bacteria can be reduced, thereby improving product quality and extending the shelf life of dairy products.

[0008] In an optional embodiment, the heat exchange plate further includes a cooling medium channel, at least one cooling medium channel is provided for heat exchange with the heat exchange channel; and / or the inner diameter of the heat exchange channel is not less than 8 mm.

[0009] In an optional embodiment, a dairy product input port and a cooling medium output port are provided on one side of the heat exchange plate along the second direction, and a dairy product output port and a cooling medium input port are provided on the other side of the heat exchange plate along the second direction, the dairy product input port is connected to one end of each of the heat exchange channels, the dairy product output port is connected to the other end of each of the heat exchange channels, the cooling medium input port is connected to one end of the cooling medium channel, and the cooling medium output port is connected to the other end of the cooling medium channel.

[0010] In an optional embodiment, at least two heat exchange plates are provided, and the heat exchange channels in the plurality of heat exchange plates are connected in series through a first pipeline.

[0011] In a second aspect, the present application further provides a dairy product cooling system, comprising a heat exchange component in any one of the embodiments of the first aspect.

[0012] Beneficial effect: Because the dairy product cooling system includes a heat exchange component, it has the same technical effect as the heat exchange component and will not be described in detail here.

[0013] In an optional embodiment, the dairy product cooling system also includes an input pump, the input port of the input pump is connected to one end of the second pipeline, the other end of the second pipeline is suitable for connecting to the output port of the fermentation tank, the output port of the input pump is connected to the heat exchange channel in the heat exchange component through a third pipeline for inputting dairy products, the heat exchange channel in the heat exchange component is connected to a fourth pipeline, and the fourth pipeline is used to connect to the filling equipment.

[0014] In an optional embodiment, the input port of the input pump is coaxially connected to the second pipeline, the second pipeline is coaxially connected to the output port of the fermentation tank, and the second pipeline is a linear pipeline.

[0015] In an optional embodiment, the inner diameters of the second pipeline, the third pipeline, the fourth pipeline and the pipelines in the heat exchange assembly are not less than 101 mm; and / or the inner diameters of the second pipeline, the third pipeline, the fourth pipeline and the valves in the heat exchange assembly are not less than 101 mm; And / or, the bend-to-diameter ratio of the elbows in the second pipeline, the third pipeline, the fourth pipeline and the heat exchange component is not less than 4; and / or, the total number of elbows in the second pipeline, the third pipeline, the fourth pipeline and the heat exchange assembly is less than 30; and / or the total length of the second pipeline, the third pipeline, the fourth pipeline and the pipelines in the heat exchange assembly is less than 40 meters; and / or, the rotation speed of the input pump is less than 120 rpm; And / or, the reflux ratio of the input pump is not greater than 5%.

[0016] In an optional embodiment, the flow rate of the dairy product in the heat exchange channel is less than 0.08 m / s; and / or, the residence time of the dairy product in the heat exchange channel is no more than 60 seconds; and / or, a cooling medium channel is provided in the heat exchange plate, and the pressure in the heat exchange channel is at least 0.2 bar higher than the pressure in the cooling medium channel; And / or, a cooling medium channel is provided in the heat exchange plate, and the temperature difference between the dairy product at the outlet of the heat exchange channel and the temperature of the cooling medium at the inlet of the cooling medium channel is less than 4°C; and / or, the ratio of the flow rate of the cooling medium in the cooling medium channel to the flow rate of the dairy product in the heat exchange channel is not less than 2.5; And / or, the pressure difference between the dairy product at the outlet of the heat exchange channel and the dairy product at the inlet of the heat exchange channel is not greater than 1 bar.

[0017] In a third aspect, the present application further provides a dairy product production line, comprising: a dairy product cooling system in any one of the embodiments of the second aspect.

[0018] Beneficial effect: Because the dairy product production line includes a dairy product cooling system, it has the same technical effects as the dairy product cooling system and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the related technologies, the drawings required for use in the specific implementation methods or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the structure of a dairy product cooling system according to an embodiment of the present application.

[0021] Description of reference numerals: X, first direction; Y, second direction; 1. Heat exchange plate; 2. First pipeline; 3. Input pump; 4. Second pipeline; 5. Third pipeline; 6. Fourth pipeline; 7. First valve; 8. Second valve; 101. Dairy product input port; 102. Dairy product output port; 103. Cooling medium input port; 104. Cooling medium output port. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0023] In the related art, the temperature of dairy products is relatively high after fermentation, and before filling and storage, they need to be cooled by a heat exchange system having a heat exchange plate 1 .

[0024] However, in the process of cooling down dairy products, the heat exchange system can only reduce the temperature of dairy products to 15°C for filling while ensuring the quality of dairy products. Therefore, before storing the filled dairy products, they need to be cooled down again to 10°C in the transit warehouse before they can be stored. During this period, the dairy products will ferment again, affecting the quality of the dairy products, and will also breed bacteria, affecting the shelf life of the dairy products.

[0025] Therefore, the present application provides a heat exchange component, a dairy product cooling system and a dairy product production line to solve or improve the problems of poor product quality and short shelf life of dairy products.

[0026] Combine the following Figure 1 , describing an embodiment of the present application.

[0027] According to an embodiment of the present application, in a first aspect, a dairy product cooling system is provided, such as Figure 1 The device is suitable for cooling dairy products, has a first direction X and a second direction Y intersecting each other, and includes at least one heat exchange plate 1, wherein the heat exchange plate 1 includes a heat exchange channel.

[0028] There are multiple heat exchange channels, which are arranged side by side along the first direction X. Each heat exchange channel extends along the second direction Y, that is, the heat exchange channel is a linear channel, which can prevent the dairy product from bending and deforming in the channel and destroying the stability of its structure.

[0029] It should be noted that the heat exchange plate 1 can be a device that performs heat exchange and cooling by bonding with other cold plates, or can be a device that has a cooling circulation loop integrated inside to directly perform cooling.

[0030] It is also necessary to explain that only one heat exchange plate 1 may be provided, or a plurality of heat exchange plates 1 may be provided, which may be connected in parallel and in series to perform heat exchange and cooling of dairy products.

[0031] In this embodiment, by arranging the heat exchange channel in a straight line in the heat exchange plate 1, the bending of the heat exchange channel can be reduced during the movement of dairy products in the heat exchange channel, thereby reducing mechanical damage to the dairy products and avoiding deterioration of the dairy product structure. Therefore, while ensuring the stability of the dairy product structure, the heat exchange length of the dairy products can be increased, the temperature of the dairy products can be reduced to a lower temperature, the fermentation rate of the dairy products in the subsequent processing process can be reduced, and the growth of bacteria can be reduced, thereby improving product quality and extending the shelf life of the dairy products.

[0032] In one embodiment, the heat exchange plate 1 further includes a cooling medium channel, and at least one cooling medium channel is provided for performing heat exchange with the heat exchange channel.

[0033] Specifically, a plurality of cooling medium channels are provided, and the plurality of cooling medium channels and the plurality of heat exchange channels are alternately arranged along the first direction X in sequence.

[0034] It should be explained that the arrangement of the cooling medium channels can be various. For example, there can be multiple cooling medium channels arranged side by side along the first direction X, or arranged side by side along the second direction Y. For another example, there can be one cooling medium channel, which is extended along the second direction Y through S-shaped winding to achieve heat exchange and cooling of multiple heat exchange channels.

[0035] In this embodiment, at least one cooling medium channel is provided to perform heat exchange with the heat exchange channel, and the cooling medium channel is integrated into the heat exchange plate 1, so that the heat exchange efficiency can be improved.

[0036] And / or, the inner diameter of the heat exchange channel is not less than 8 mm, preferably, between 8 mm and 30 mm. Specifically, the inner diameter of the heat exchange channel can be any one of 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, and 30 mm. In this embodiment, within a certain thickness range where the dairy product contacts the wall of the heat exchange channel, the stability of its tissue decreases due to the friction of the wall of the heat exchange channel. By setting the inner diameter of the heat exchange channel to be not less than 8 mm, the occupancy of the part of the dairy product with reduced tissue stability can be reduced to ensure the tissue stability of the dairy product. If the inner diameter of the heat exchange channel is too small, the occupancy of the part of the dairy product with reduced tissue stability increases, which will reduce the overall tissue stability of the dairy product and cause dairy product quality problems.

[0037] In one embodiment, Figure 1Described, the heat exchange plate 1 is provided with a dairy product input port 101 and a cooling medium output port 104 on one side along the second direction Y, and the heat exchange plate 1 is provided with a dairy product output port 102 and a cooling medium input port 103 on the other side along the second direction Y, the dairy product input port 101 is connected with one end of each heat exchange channel, the dairy product output port 102 is connected with the other end of each heat exchange channel, the cooling medium input port 103 is connected with one end of the cooling medium channel, and the cooling medium output port 104 is connected with the other end of the cooling medium channel.

[0038] Specifically, a flow distribution chamber may be provided between the dairy product input port 101 and the dairy product output port 102 and the plurality of heat exchange channels to guide and distribute the dairy product, thereby improving the stability of the dairy product structure.

[0039] In this embodiment, the cooling medium channel input port 103 and the dairy product input port 101 are arranged on both sides of the heat exchange plate 1 along the second direction Y, so that the flow directions of the cooling medium and the dairy product are opposite. During the heat exchange process, the cooling medium gradually increases along its flow direction as the heat exchange temperature increases. Therefore, the dairy product first exchanges heat with the cooling medium with a high temperature, and then gradually exchanges heat with the cooling medium with a lower temperature along its flow direction. This ensures that the temperature difference between the cooling medium and the dairy product tends to be stable, and ensures the high efficiency of heat exchange.

[0040] In one embodiment, Figure 1 As described, at least two heat exchange plates 1 are provided, and the heat exchange channels in the plurality of heat exchange plates 1 are connected in series through the first pipeline 2; specifically, the number of heat exchange plates 1 is 2 to 4, specifically any one of 2, 3 and 4, preferably 2; of course, the number of heat exchange plates 1 can also be more, which can be selected and adjusted according to actual needs.

[0041] It should be explained that, according to the production layout and performance index monitoring requirements, multiple pipeline sections and elbows and valves for transfer between the pipelines will be provided in the first pipeline 2.

[0042] In this embodiment, the heat exchange plates 1 are arranged in plurality and can be arranged overlappingly to reduce the length of the heat exchange plates 1 and reduce the occupied space of the equipment.

[0043] In one embodiment, Figure 1 A dairy product cooling system is provided, which is suitable for cooling dairy products and has a first direction X and a second direction Y intersecting each other, and includes at least one heat exchange plate 1, wherein the heat exchange plate 1 includes a heat exchange channel and a cooling medium channel.

[0044] There are multiple heat exchange channels, which are arranged side by side along the first direction X. Each heat exchange channel extends along the second direction Y, that is, the heat exchange channel is a linear channel, which can prevent the dairy product from bending and deforming in the channel and destroying the stability of its structure.

[0045] At least one cooling medium channel is provided for heat exchange with the heat exchange channel; specifically, a plurality of cooling medium channels are provided, and the plurality of cooling medium channels and the plurality of heat exchange channels are alternately arranged in sequence along the first direction X.

[0046] The inner diameter of the heat exchange channel is not less than 8 mm, preferably, between 8 mm and 30 mm. Specifically, the inner diameter of the heat exchange channel can be any one of 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm, 22 mm, 24 mm, 26 mm, 28 mm, and 30 mm.

[0047] A dairy product input port 101 and a cooling medium output port 104 are provided on one side of the heat exchange plate 1 along the second direction Y, and a dairy product output port 102 and a cooling medium input port 103 are provided on the other side of the heat exchange plate 1 along the second direction Y. The dairy product input port 101 is connected to one end of each heat exchange channel, the dairy product output port 102 is connected to the other end of each heat exchange channel, the cooling medium input port 103 is connected to one end of the cooling medium channel, and the cooling medium output port 104 is connected to the other end of the cooling medium channel; specifically, a flow distribution cavity can be provided between the dairy product input port 101 and the dairy product output port 102 and the multiple heat exchange channels to guide and distribute the dairy products, thereby improving the stability of the dairy product tissue.

[0048] Furthermore, at least two heat exchange plates 1 are provided, and the heat exchange channels in the plurality of heat exchange plates 1 are connected in series through the first pipeline 2; specifically, the number of heat exchange plates 1 is 2 to 4, specifically any one of 2, 3 and 4, preferably 2; of course, the number of heat exchange plates 1 can also be more, which can be selected and adjusted according to actual needs.

[0049] According to an embodiment of the present application, in a second aspect, a dairy product cooling system is provided, such as Figure 1 The heat exchange component described includes any one of the embodiments in the first aspect.

[0050] In this embodiment, because the dairy product cooling system includes a heat exchange component, it has the same technical effect as the heat exchange component and will not be described in detail here.

[0051] In one embodiment, Figure 1The dairy product cooling system further includes an input pump 3. Specifically, the input pump 3 provides power for liquid transmission and can be purchased on the market. The input port of the input pump 3 is connected to one end of the second pipeline 4, and the other end of the second pipeline 4 is suitable for connecting to the output port of the fermentation tank. The output port of the input pump 3 is connected to the heat exchange channel in the heat exchange component through the third pipeline 5 for inputting dairy products. The heat exchange channel in the heat exchange component is connected to the fourth pipeline 6, and the fourth pipeline 6 is used to connect to the filling equipment.

[0052] It should be explained that, according to the production layout and performance index monitoring requirements, multiple pipeline sections will be provided in the second pipeline 4, the third pipeline 5 and the fourth pipeline 6, as well as elbows and valves for transfer between the pipelines.

[0053] In this embodiment, an input pump 3 is provided between the output port of the fermentation tank and the heat exchange component to provide power for the dairy product. This can not only accurately regulate the flow rate of the dairy product, but also because the dairy product is in a high temperature state when passing through the input pump 3, its fluidity is good and it is not easy to damage the stability of its tissue, which can improve the tissue stability of the dairy product after passing through the heat exchange component.

[0054] In one embodiment, Figure 1 The input port of the input pump 3 is coaxially connected to the second pipeline 4, and the second pipeline 4 is coaxially connected to the output port of the fermentation tank. The second pipeline 4 is a linear pipeline, that is, the dairy product is transmitted in a straight line after coming out of the fermentation tank, so as to reduce the tortuous path transmission of the dairy product and improve the tissue stability of the dairy product, thereby improving the cooling effect while ensuring the tissue stability of the dairy product.

[0055] In one embodiment, the inner diameters of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the pipelines in the heat exchange component are not less than 101 mm; specifically, the inner diameter of the pipeline is preferably 101 mm~160 mm, specifically: any one of 101 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm and 160 mm; in this embodiment, the inner diameter of the pipeline is set to be not less than 101 mm, and within a certain thickness range where the dairy product contacts the pipeline wall, the stability of its tissue decreases due to the friction of the pipeline wall. By setting the inner diameter of the pipeline to be not less than 101 mm, the occupancy of the part of the dairy product with reduced tissue stability can be reduced to ensure the tissue stability of the dairy product; if the inner diameter of the pipeline is too small, the occupancy of the part of the dairy product with reduced tissue stability increases, which will reduce the overall tissue stability of the dairy product and cause dairy product quality problems.

[0056] And / or, the inner diameters of the valves in the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the heat exchange component are not less than 101 mm; specifically, the inner diameter of the valve is preferably 101 mm~160 mm, specifically: any one of 101 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm and 160 mm; in this embodiment, the inner diameter of the valve is set to be not less than 101 mm, and within a certain thickness range where the dairy product contacts the valve wall, the stability of its tissue is reduced due to the friction of the valve wall. By setting the inner diameter of the valve to be not less than 101 mm, the occupancy of the part of the dairy product with reduced tissue stability can be reduced to ensure the tissue stability of the dairy product; if the inner diameter of the valve is too small, the occupancy of the part of the dairy product with reduced tissue stability increases, which will reduce the overall tissue stability of the dairy product and cause dairy product quality problems.

[0057] And / or, the bend-to-diameter ratio of the elbows in the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the heat exchange assembly is not less than 4; preferably, the bend-to-diameter ratio is 4-8, and specifically, the bend-to-diameter ratio of the elbow can be any one of 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, and 8; it should be explained that the "bend-to-diameter ratio" is the ratio of the bending radius of the elbow to the inner diameter of the elbow.

[0058] In this embodiment, the bend-to-diameter ratio of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the elbows in the heat exchange component is not less than 4, which can reduce the impact force received by the dairy product when passing through the elbow, reduce the pressure drop of the dairy product, thereby reducing the loss of stability of the dairy product structure and reducing the risk of quality problems of the dairy product.

[0059] And / or, the total number of elbows in the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the heat exchange component is less than 30; that is, in the entire cooling and conveying route of the dairy product, the total number of elbows used does not exceed 30, and preferably, the fewer the number of elbows, the better; because the dairy product changes its flow direction after passing through the elbow, the dairy product will be affected by centrifugal force and form turbulence, etc., which will affect the tissue stability of the dairy product, and thus the number of elbows needs to be controlled; and when the number of elbows is within 30, the tissue stability of the dairy product will not be destroyed; if the number of elbows exceeds 30, the risk of destroying the tissue stability of the dairy product will increase.

[0060] And / or, the total length of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the pipeline in the heat exchange component is less than 40 meters; wherein the pipeline in the heat exchange component refers to the pipeline in the first pipeline 2; by controlling the total length of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the pipeline in the heat exchange component, the influence of friction on the tissue stability of dairy products in the pipeline can be controlled.

[0061] The rotation speed of the input pump 3 is less than 120rpm; preferably, the rotation speed of the input pump 3 is between 80 rpm and 120rpm, specifically, the rotation speed of the input pump 3 is any one of 80rpm, 90rpm, 100rpm, 110rpm and 120rpm; when the rotation speed of the input pump 3 is less than 120rpm, the influence of the rotation of the input pump 3 on the tissue stability of the dairy product can be reduced; if the rotation speed of the input pump 3 exceeds 120rpm, the influence on the tissue stability of the dairy product increases rapidly.

[0062] And / or, the reflux ratio of the input pump 3 is not greater than 5%, specifically any one of 3%, 4% and 5%. By controlling the reflux ratio of the input pump 3 to be not greater than 5%, the refluxed dairy products need to re-enter the input pump 3 for output and will be subjected to more mechanical shear forces, thereby reducing the tissue stability of the dairy products. Reducing the reflux ratio can reduce the amount of dairy products occupied by the input pump 3 for secondary delivery, thereby ensuring the stability of the dairy product tissue.

[0063] In one embodiment, in the heat exchange channel, the flow rate of the dairy product is less than 0.08 m / s; preferably, the flow rate of the dairy product is between 0.04 m / s and 0.08 m / s, specifically, the flow rate of the dairy product is any one of 0.04 m / s, 0.05 m / s, 0.06 m / s, 0.07 m / s and 0.08 m / s; when the flow rate of the dairy product exceeds 0.08 m / s, the friction between the dairy product and the inner wall surface of the heat exchange channel will increase rapidly, seriously affecting the tissue stability of the dairy product.

[0064] And / or, the residence time of the dairy product in the heat exchange channel is not more than 60 seconds; by controlling the residence time of the dairy product in the heat exchange channel, the heat exchange efficiency can be improved, and the friction between the dairy product and the heat exchange channel caused by the dairy product flowing too slowly can be avoided, thereby affecting the tissue stability of the dairy product.

[0065] and / or, the pressure in the heat exchange channel is at least 0.2 bar higher than the pressure in the cooling medium channel; And / or, the temperature of the dairy product at the outlet of the heat exchange channel and the temperature of the cooling medium at the inlet of the cooling medium channel have a difference of less than 4°C; within this temperature difference range, the heat exchange efficiency can be guaranteed and the cooling medium temperature can be prevented from being too low, causing energy waste. And / or, the ratio of the flow rate of the cooling medium in the cooling medium channel to the flow rate of the dairy product in the heat exchange channel is not less than 2.5; preferably between 2.5 and 6, specifically any one of 2.5, 3, 3.5, 4, 4.5, 5, 5.5 and 6; in this implementation, the heat exchange efficiency can be improved by adopting a ratio of the flow rate of the cooling medium to the flow rate of the dairy product of not less than 3.5; if the ratio of the flow rate of the cooling medium to the flow rate of the dairy product is less than 3.5, the heat exchange efficiency is low and cannot meet the demand.

[0066] And / or, the pressure difference between the dairy product at the outlet of the heat exchange channel and the dairy product at the inlet of the heat exchange channel is not greater than 1 bar; preferably between 0.4 bar and 1 bar, preferably any one of 0.4 bar, 0.5 bar, 0.6 bar, 0.7 bar, 0.8 bar, 0.9 bar and 1 bar. By controlling the pressure difference of the dairy product on both sides of the heat exchange channel, the friction resistance received by the dairy product in the heat exchange channel can be controlled, thereby reducing the influence of the heat exchange channel on the tissue stability of the dairy product.

[0067] In one embodiment, a dairy product cooling system is provided. Figure 1 The heat exchange component, the input pump 3, the second pipeline 4, the third pipeline 5 and the fourth pipeline 6 in any one embodiment of the first aspect are included.

[0068] Specifically, the input pump 3 provides power for liquid transmission and can be purchased on the market; the input port of the input pump 3 is connected to one end of the second pipeline 4, and the other end of the second pipeline 4 is suitable for connecting to the output port of the fermentation tank. The output port of the input pump 3 is connected to the heat exchange channel in the heat exchange component through the third pipeline 5 for inputting dairy products. The heat exchange channel in the heat exchange component is connected to the fourth pipeline 6, and the fourth pipeline 6 is used to connect to the filling equipment.

[0069] Furthermore, the input port of the input pump 3 is coaxially connected to the second pipeline 4, and the second pipeline 4 is coaxially connected to the output port of the fermentation tank. The second pipeline 4 is a linear pipeline, that is, the dairy product is transmitted in a straight line after coming out of the fermentation tank, so as to reduce the tortuous path transmission of the dairy product and improve the tissue stability of the dairy product, thereby improving the cooling effect while ensuring the tissue stability of the dairy product.

[0070] Furthermore, the inner diameters of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the pipelines in the heat exchange assembly are not less than 101 mm; specifically, the inner diameter of the pipeline is preferably 101 mm to 160 mm, specifically: any one of 101 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm and 160 mm.

[0071] Furthermore, the inner diameters of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the valves in the heat exchange assembly are not less than 101 mm; specifically, the inner diameter of the valve is preferably 101 mm to 160 mm, specifically any one of 101 mm, 105 mm, 110 mm, 115 mm, 120 mm, 125 mm, 130 mm, 135 mm, 140 mm, 145 mm, 150 mm, 155 mm and 160 mm.

[0072] Furthermore, the bend-to-diameter ratio of the elbows in the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the heat exchange assembly is not less than 4; preferably, the bend-to-diameter ratio is 4-8, and specifically, the bend-to-diameter ratio of the elbow can be any one of 4, 4.5, 5, 5.5, 6, 6.5, 7, 7.5, and 8.

[0073] Furthermore, the total number of elbows in the second pipeline 4 , the third pipeline 5 , the fourth pipeline 6 and the heat exchange assembly is less than 30.

[0074] Furthermore, the total length of the second pipeline 4, the third pipeline 5, the fourth pipeline 6 and the pipelines in the heat exchange assembly is less than 40 meters.

[0075] Further, the rotation speed of the input pump 3 is less than 120 rpm; preferably, the rotation speed of the input pump 3 is between 80 rpm and 120 rpm, and specifically, the rotation speed of the input pump 3 is any one of 80 rpm, 90 rpm, 100 rpm, 110 rpm and 120 rpm.

[0076] Furthermore, the reflux ratio of the input pump 3 is not greater than 5%, specifically any one of 3%, 4% and 5%.

[0077] Furthermore, in the heat exchange channel, the flow rate of the dairy product is less than 0.08 m / s; preferably, the flow rate of the dairy product is between 0.04 m / s and 0.08 m / s, specifically, the flow rate of the dairy product is any one of 0.04 m / s, 0.05 m / s, 0.06 m / s, 0.07 m / s and 0.08 m / s.

[0078] Furthermore, the residence time of the dairy product in the heat exchange channel is not more than 60 seconds.

[0079] Furthermore, the pressure in the heat exchange channel is at least 0.2 bar higher than the pressure in the cooling medium channel, which can improve the tissue stability of the dairy product by increasing the pressure.

[0080] Furthermore, the temperature difference between the dairy product at the outlet of the heat exchange channel and the cooling medium at the inlet of the cooling medium channel is less than 4°C. Furthermore, the ratio of the flow rate of the cooling medium in the cooling medium channel to the flow rate of the dairy product in the heat exchange channel is not less than 2.5; preferably between 2.5 and 6, specifically any one of 2.5, 3, 3.5, 4, 4.5, 5, 5.5 and 6.

[0081] Furthermore, the pressure difference between the dairy product at the outlet of the heat exchange channel and the dairy product at the inlet of the heat exchange channel is not greater than 1 bar; preferably between 0.4 bar and 1 bar, preferably any one of 0.4 bar, 0.5 bar, 0.6 bar, 0.7 bar, 0.8 bar, 0.9 bar and 1 bar.

[0082] In this embodiment, by setting multiple limits in the dairy product cooling circuit, the temperature of the dairy product can be reduced to below 10°C while ensuring the stability of the dairy product tissue, so that the dairy product can be directly stored in the warehouse after filling, without entering the transfer station for further cooling, thereby simplifying the operation; at the same time, the dairy product is directly reduced to 10°C, the fermentation rate of the dairy product is greatly reduced, and at the same time, it can prevent the dairy product from breeding bacteria, thereby increasing the shelf life of the dairy product.

[0083] Furthermore, the dairy product cooling system also includes a first valve 7 and a second valve 8, the first valve 7 is located on the fourth pipeline 6, and the middle part of the first pipeline 2 is connected to the fourth pipeline 6 through the second valve 8, wherein the first valve 7 is located between the second valve 8 and the dairy product output port 102 of the heat exchange plate 1.

[0084] In specific use, the first valve 7 is controlled to be opened, and the second valve 8 is connected to the two heat exchange plates 1, so that the dairy product is cooled from the two heat exchange plates 1 and then output through the fourth pipeline 6, so that the dairy product can be output at 10°C; the first valve 7 is controlled to be closed, and the second valve 8 is connected to the heat exchange plate 1 that first inputs the dairy product and the fourth pipeline 6, so that the dairy product is cooled after one heat exchange plate 1 and then output, so that the dairy product is output at 15°C, thereby realizing the output of dairy products at two different temperatures.

[0085] According to an embodiment of the present application, in a third aspect, a dairy product production line is provided, comprising the dairy product cooling system in any one of the embodiments in the second aspect.

[0086] Specifically, the dairy product production line can be used to produce liquids with a certain viscosity, such as yogurt, cheese, etc.

[0087] In this embodiment, the dairy product production line includes a dairy product cooling system, which has the same technical effect as the dairy product cooling system and will not be described in detail here.

[0088] Although the embodiments of the present application are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A heat exchange assembly, suitable for cooling dairy products, having a first direction (X) and a second direction (Y) intersecting each other, characterized in that: The invention comprises at least one heat exchange plate (1), wherein the heat exchange plate (1) comprises: There are multiple heat exchange channels, which are arranged side by side along the first direction (X), and each of the heat exchange channels extends along the second direction (Y).

2. The heat exchange assembly according to claim 1, characterized in that: The heat exchange plate (1) further comprises a cooling medium channel, at least one cooling medium channel is provided and is used for heat exchange with the heat exchange channel; And / or, the inner diameter of the heat exchange channel is not less than 8 mm.

3. The heat exchange assembly according to claim 2, characterized in that: A dairy product input port (101) and a cooling medium output port (104) are provided on one side of the heat exchange plate (1) along the second direction (Y), and a dairy product output port (102) and a cooling medium input port (103) are provided on the other side of the heat exchange plate (1) along the second direction (Y); the dairy product input port (101) is connected to one end of each of the heat exchange channels, the dairy product output port (102) is connected to the other end of each of the heat exchange channels, the cooling medium input port (103) is connected to one end of the cooling medium channel, and the cooling medium output port (104) is connected to the other end of the cooling medium channel.

4. The heat exchange assembly according to any one of claims 1 to 3, characterized in that: At least two heat exchange plates (1) are provided, and the heat exchange channels in the plurality of heat exchange plates (1) are connected in series via a first pipeline (2).

5. A dairy product cooling system, characterized in that: include: A heat exchange assembly as claimed in any one of claims 1 to 4.

6. The dairy product cooling system according to claim 5, characterized in that: It also comprises an input pump (3), the input port of the input pump (3) being connected to one end of a second pipeline (4), the other end of the second pipeline (4) being suitable for being connected to an output port of a fermentation tank, the output port of the input pump (3) being connected to the heat exchange channel in the heat exchange component via a third pipeline (5) for inputting dairy products, the heat exchange channel in the heat exchange component being connected to a fourth pipeline (6), and the fourth pipeline (6) being used for being connected to a filling device.

7. The dairy product cooling system according to claim 6, characterized in that: The input port of the input pump (3) is coaxially connected to the second pipeline (4), and the second pipeline (4) is coaxially connected to the output port of the fermentation tank. The second pipeline (4) is a linear pipeline.

8. The dairy product cooling system according to claim 6 or 7, characterized in that: The inner diameters of the second pipeline (4), the third pipeline (5), the fourth pipeline (6) and the pipelines in the heat exchange assembly are not less than 101 mm; and / or the inner diameters of the second pipeline (4), the third pipeline (5), the fourth pipeline (6) and the valve in the heat exchange assembly are not less than 101 mm; and / or the bend-to-diameter ratio of the elbows in the second pipeline (4), the third pipeline (5), the fourth pipeline (6) and the heat exchange component is not less than 4; and / or the total number of elbows in the second pipeline (4), the third pipeline (5), the fourth pipeline (6) and the heat exchange component is less than 30; and / or the total length of the second pipeline (4), the third pipeline (5), the fourth pipeline (6) and the pipelines in the heat exchange assembly is less than 40 meters; and / or, the rotation speed of the input pump (3) is less than 120 rpm; And / or, the reflux ratio of the input pump (3) is not greater than 5%.

9. The dairy product cooling system according to claim 6 or 7, characterized in that: In the heat exchange channel, the flow rate of the dairy product is less than 0.08 m / s; and / or, the residence time of the dairy product in the heat exchange channel is no more than 60 seconds; And / or, a cooling medium channel is provided in the heat exchange plate (1), and the pressure in the heat exchange channel is at least 0.2 bar higher than the pressure in the cooling medium channel; And / or, a cooling medium channel is provided in the heat exchange plate (1), and the temperature difference between the dairy product at the outlet of the heat exchange channel and the cooling medium at the inlet of the cooling medium channel is less than 4°C; and / or, the ratio of the flow rate of the cooling medium in the cooling medium channel to the flow rate of the dairy product in the heat exchange channel is not less than 2.5; And / or, the pressure difference between the dairy product at the outlet of the heat exchange channel and the dairy product at the inlet of the heat exchange channel is not greater than 1 bar.

10. A dairy product production line, characterized in that: include: A dairy product cooling system as described in any one of claims 5 to 9.

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