CN108286845A - Ice making veneer evaporator and its operation method - Google Patents

Abstract

The present invention provides a kind of ice making veneer evaporators and its operation method.This ice making veneer evaporator, including several unit plate bodys, splicing component is arranged in the upper and lower edge of unit plate body, it is put down in cell board body to several circulation passages are arranged, the section of circulation passage is rectangle, evenly distributed several fins on the inner wall of circulation passage, the fixed closure plate in the both sides of unit plate body, cavity is set in closure plate, circulation passage is connected with cavity, one end of closure plate internal cavity is opening, and closed plate is arranged in the other end, and the cavity opening of two closure plates on same unit plate body is in oppositely arranged up and down；Several unit plate bodys are formed along file by splicing component connected, the closure plate of the neighbouring plate body of Unit two is to just connecting, the cavity opening of connection closure plate is set to be connected in sealing, it is connected to liquid supply pipe on a side stopboard of the unit plate body of bottommost, liquid back pipe is connected on a side stopboard of the unit plate body of topmost.

Description

Single-plate evaporator for ice making and method of operation thereof

technical field

The invention belongs to the technical field of machinery, and relates to an ice-making device, in particular to a single-plate evaporator for ice-making and an operation method thereof.

Background technique

Plate ice machine is a kind of ice machine, generally industrial ice machine. The ice produced is in block form. The plate ice produced by it is irregular, hard, transparent and dry. The thickness and width of the plate ice can be adjusted freely according to the purpose.

The evaporator is a very important part of the four major components of refrigeration. The low-temperature condensed liquid passes through the evaporator, exchanges heat with the outside air, vaporizes and absorbs heat, and achieves the effect of refrigeration. The evaporator is mainly composed of two parts: a heating chamber and an evaporation chamber. The heating chamber provides the heat needed for evaporation to the liquid, which promotes the boiling and vaporization of the liquid; the evaporation chamber completely separates the gas-liquid two phases.

The evaporator in the existing plate ice machine has the following problems:

The heat exchange efficiency of the refrigerant in the evaporator is low, so that a large amount of cooling capacity carried by the refrigerant is lost and wasted. The short residence time of the refrigerant in the evaporator makes the working efficiency of the unit refrigerant low, thus increasing the working time and workload of the compressor. The cooling effect of the evaporator is average, and the thickness of the plate ice produced is poor, and it is not suitable for storage, and it is easy to melt.

Contents of the invention

The purpose of the present invention is to solve the above-mentioned problems in the existing technology, and proposes a way to enhance the heat exchange effect by setting a serpentine bending path, and at the same time increase the inner wall structure of the pipeline to enhance the contact degree with the heat exchange agent, and improve the heat exchange effect. Thermally efficient single plate evaporator for ice making and method of operation thereof.

The purpose of the present invention can be achieved through the following technical solutions: the single-plate evaporator for ice making includes several unit plate bodies, splicing components are arranged at the upper and lower edges of the unit plate bodies, and the unit plate bodies are arranged in a horizontal direction A plurality of circulation passages are provided, the cross-section of the circulation passages is rectangular, a number of convex ribs are evenly arranged on the inner wall of the circulation passages, blocking plates are fixed on both sides of the unit plate body, and a cavity is arranged in the blocking plates, The circulation channel is connected with the cavity, one end of the cavity in the blocking plate is open, and the other end is provided with a closing plate, and the openings of the cavity of the two blocking plates on the same unit plate are reversed up and down. Setting; several of the unit plates are fixedly connected by splicing components along the longitudinal row, and the blocking plates of the two adjacent unit plates are aligned and connected, so that the opening of the cavity connecting the blocking plates is sealed and connected, and the unit at the bottom One side blocking plate of the plate body is connected with the liquid supply pipe, and one side blocking plate of the uppermost unit plate body is connected with the liquid return pipe.

In the above-mentioned single-plate evaporator for ice making, the ribs are straight or wavy, and the cross-section of the ribs is arc-shaped or triangular.

In the above-mentioned single-plate evaporator for ice making, the number of ribs in each circulation channel is 8-20, the width of the ribs is 0.3-1.8 mm, and the height of the ribs is 0.4-20 mm. 2.1mm, and the distance between the adjacent ribs is 1.2-3.6mm.

In the above-mentioned single-plate evaporator for ice making, the splicing assembly includes a raised bar on the top side of the unit plate body, the raised bar is a dovetail-shaped bar, and the splicing assembly also includes a rib on the top side of the unit plate. The groove on the bottom side of the body, the groove is a dovetail groove, and the protruding strip is inserted into the groove to form a fitting engagement. The dovetail-shaped snap fit can effectively realize the solid connection between the two boards, and the dovetail profile prevents the two boards from being easily detached from the snap connection.

In the above-mentioned single-plate evaporator for ice making, the unit plate body located at the uppermost part is fixedly connected to the installation rib, the bottom side of the installation rib is provided with a dovetail groove, and the convex strip on the top side of the unit plate Inserting into the dovetail groove to form a fitting snap connection.

In the above-mentioned single-plate evaporator for ice making, a fixed plate is fixed on the outer wall of the blocking plate, and the fixed plate has a vertical plate and a horizontal plate, and the vertical plate is fixed on the blocking plate On the outer wall of the horizontal plate, there are mounting holes opened on the horizontal plate. At least four fixing plates are arranged on the overall veneer spliced by several unit plates, and the number of fixing plates on both sides is equal, thereby ensuring the stability of the overall veneer after installation.

The operation method of the single plate evaporator comprises the following steps:

1) Connect the evaporator to the heat exchange cycle system, and send the heat exchange agent to the liquid supply pipe of the evaporator through the compressor;

2) The heat exchange agent enters the unit plate at the bottom of the evaporator, flows from one side of the unit plate to the other side through several circulation channels, reaches the other side, and then enters the upper adjacent unit plate through the connected blocking plate , so that the serpentine bending flow path is performed in several blocking plates and several unit plates, and the surface of the evaporator is cooled during the flow of the heat exchange medium, and the heat exchange medium finally flows out of the evaporator through the liquid return pipe;

3) Switch the direction of the flow path, and send the heat exchange agent to the liquid return pipe of the evaporator through the compressor;

4) The heat exchange agent enters the uppermost unit plate body of the evaporator, flows from one side of the unit plate body to the other side through several circulation channels, reaches the other side, and then enters the adjacent unit plate body below through the connected blocking plate , so that the serpentine bending flow path is performed in several blocking plates and several unit plates, and the surface of the evaporator is heated during the flow of the heat exchange agent, and the heat exchange agent finally flows out of the evaporator through the liquid supply pipe.

Through the blocking or conduction provided by the blocking plate, multiple unit plates arranged in the longitudinal direction are connected to form a multi-segment bending flow path, thereby extending the flow path length of the heat exchange medium in the evaporator and prolonging the heat exchange medium in the evaporation process. The residence time in the device is long, so as to realize the full effect of the heat exchange agent, improve its utilization rate, and enhance the heat exchange effect.

In the above-mentioned operation method, the heat exchange agent collides with the ribs inside when flowing through the circulation channel, which increases the turbulence of the heat exchange agent, prolongs the residence time of the heat exchange agent, and increases the contact between the surface of the ribs and the heat exchange agent. area.

In the above operation method, the more complex the shape of the ribs, the better the heat transfer effect; the more the number of ribs, the better the heat transfer effect; the larger the rib size, the better the heat transfer effect; the spacing of the ribs The smaller it is, the better the heat transfer effect.

In the above operation method, the unit plate body is made of aluminum alloy material, and the blocking plate is made of aluminum alloy material. Aluminum alloy materials are used to improve heat exchange efficiency, thereby optimizing the ice making effect and improving work efficiency.

Compared with the prior art, the single-plate evaporator for ice making and its operation method have the following advantages:

By setting a serpentine bending path to increase the flow length and residence time of the heat exchange medium, and adding various types of ribs on the inner wall of the flow-through pipe, the turbulence intensity of the heat exchange medium can be increased through the complex road conditions of the flow path. , residence time, so as to achieve full contact heat exchange between the heat exchange agent in the pipeline and the side wall, and finally optimize the heat exchange effect and improve the heat exchange efficiency.

Description of drawings

Fig. 1 is a front sectional view of the single-plate evaporator for ice making.

Fig. 2 is a partial cross-sectional side view of the single-plate evaporator for ice making.

Fig. 3 is an external structural diagram of the single-plate evaporator for ice making.

In the figure, 1. unit plate body; 2. convex strip; 3. circulation channel; 4. convex rib; 5. blocking plate; 6. liquid supply pipe; 7. liquid return pipe; plate.

Detailed ways

The following are specific embodiments of the present invention and in conjunction with the accompanying drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

As shown in Figures 1 to 3, the single-plate evaporator for ice-making includes several unit plate bodies 1, splicing components are arranged at the upper and lower edges of the unit plate body 1, and several unit plate bodies 1 are arranged horizontally. Circulation channel 3, the cross section of circulation channel 3 is rectangular, a number of convex ribs 4 are evenly arranged on the inner wall of circulation channel 3, blocking plates 5 are fixed on both sides of unit plate body 1, and cavities are arranged in blocking plate 5, and circulation channel 3 It communicates with the cavity. One end of the cavity in the blocking plate 5 is open, and the other end is provided with a closed plate. The cavity openings of the two blocking plates 5 on the same unit plate body 1 are set up and down reversely; several unit plates The body 1 is fixedly connected by splicing components along the column, and the blocking plates 5 of the two adjacent unit plate bodies 1 are aligned and connected, so that the opening of the cavity connected to the blocking plate 5 is sealed and connected. The unit plate body 1 at the bottom One side of the blocking plate 5 is connected to the liquid supply pipe 6, and the side blocking plate 5 of the uppermost unit plate body 1 is connected to the liquid return pipe 7.

The convex rib 4 is linear or wavy, and the cross-sectional shape of the convex rib 4 is arc-shaped or triangular.

The number of ribs 4 in each circulation channel 3 is 8-20, the width of ribs 4 is 0.3-1.8 mm, the height of ribs 4 is 0.4-2.1 mm, and the distance between adjacent ribs 4 is 1.2 mm. ~3.6mm.

The splicing assembly includes a convex strip 2 on the top side of the unit plate body 1, and the convex strip 2 is a dovetail-shaped strip body. The splicing assembly also includes a groove on the bottom side of the unit plate body 1. The slot is formed into a fitting snap connection. The dovetail-shaped snap fit can effectively realize the solid connection between the two boards, and the dovetail profile prevents the two boards from being easily detached from the snap connection.

The uppermost unit plate body 1 is fixedly connected with the installation rib plate 8, and the bottom side of the installation rib plate 8 is provided with a dovetail groove, and the convex strip 2 on the top side of the unit plate body 1 is inserted into the dovetail groove to form a fitting snap connection.

A fixed plate 9 is fixed on the outer side wall of the blocking plate 5, and the fixed plate 9 has a vertical plate and a horizontal plate, and the vertical plate is fixed on the outer wall of the blocking plate 5, and the mounting hole is opened on the horizontal plate. At least four fixing plates 9 are arranged on the overall veneer spliced by several unit plates 1 , and the number of fixing plates 9 on both sides is equal, thereby ensuring the stability of the overall veneer after installation.

The operation method of the single plate evaporator comprises the following steps:

1) Connect the evaporator into the heat exchange cycle system, and send the heat exchange agent into the liquid supply pipe 6 of the evaporator through the compressor;

2) The heat exchange agent enters the unit plate body 1 at the bottom of the evaporator, flows from one side of the unit plate body 1 to the other side through several circulation channels 3, reaches the other side, and then enters the upper phase through the communicating blocking plate 5. In the adjacent unit plate body 1, a serpentine bending flow path is performed in several blocking plates 5 and several unit plate bodies 1, and the surface of the evaporator is cooled during the flow of the heat exchange medium, and the heat exchange medium is finally returned to the The liquid pipe 7 flows out of the evaporator;

3), switch the direction of the flow path, and send the heat exchange agent to the liquid return pipe 7 of the evaporator through the compressor;

4) The heat exchange agent enters the uppermost unit plate body 1 of the evaporator, flows from one side of the unit plate body 1 to the other side through a number of circulation channels 3, reaches the other side, and then enters the lower phase through the communicating blocking plate 5. In the adjacent unit plate body 1, the serpentine bending flow path is performed in several blocking plates 5 and several unit plate bodies 1, and the surface of the evaporator is heated during the flow of the heat exchange medium, and the heat exchange medium is finally released by the The liquid supply pipe 6 flows out of the evaporator.

Through the blocking or conduction provided by the blocking plate 5, the multiple unit plates 1 arranged in the longitudinal direction are connected to form a multi-segment bent flow path, thereby extending the length of the flow path of the heat exchange medium in the evaporator and extending the length of the heat exchange medium. The residence time in the evaporator is long, so as to realize the full effect of the heat exchange agent, improve its utilization rate, and enhance the heat exchange effect.

When the heat exchange agent flows through the circulation channel 3, it collides with the ribs 4 inside, which increases the turbulence of the heat exchange agent, prolongs the residence time of the heat exchange agent, and increases the contact area between the surface of the ribs 4 and the heat exchange agent.

The more complicated the shape of the ribs 4, the better the heat exchange effect; the more the ribs 4, the better the heat exchange effect; the larger the ribs 4, the better the heat exchange effect; the smaller the distance between the ribs 4, The better the heat transfer effect.

The unit plate body 1 is made of aluminum alloy material, and the blocking plate 5 is made of aluminum alloy material. Aluminum alloy materials are used to improve heat exchange efficiency, thereby optimizing the ice making effect and improving work efficiency.

The single-plate evaporator for ice making and its operating method have the following advantages:

By setting a serpentine bending path to increase the flow length and residence time of the heat transfer agent, and adding various forms of ribs 4 on the inner wall of the flow-through pipe, the turbulent flow of the heat transfer agent is increased through the complex road conditions of the flow path Intensity, residence time, in order to achieve full contact heat exchange between the heat exchange agent in the pipeline and the side wall, and finally optimize the heat exchange effect and improve the heat exchange efficiency.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the present invention or go beyond the definition of the appended claims range.

Although this article uses many terms such as unit plate body 1; convex strip 2; circulation channel 3; convex rib 4; blocking plate 5; liquid supply pipe 6; liquid return pipe 7; installation rib 8; The possibility of using other terms is not excluded. These terms are used only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any kind of additional limitation is against the spirit of the present invention.

Claims (10)

1. A single-plate evaporator for ice-making, comprising several unit plate bodies, splicing components are arranged at the upper and lower edges of the unit plate bodies, and it is characterized in that a number of circulation channels are arranged in a parallel arrangement in the unit plate body, so that The cross-section of the circulation channel is rectangular, and several convex ribs are evenly arranged on the inner wall of the circulation channel. Blocking plates are fixed on both sides of the unit plate body, and a cavity is arranged in the blocking plate. The circulation channel and the The cavities are connected, one end of the inner cavity of the blocking plate is open, and the other end is provided with a closing plate, and the openings of the cavities of the two blocking plates on the same unit plate are set up and down reversely; several of the units The plates are fixedly connected by splicing components along the column, and the blocking plates of the two adjacent unit plates are aligned and connected, so that the opening of the cavity connecting the blocking plates is sealed and connected, and one side of the unit plate at the bottom is blocked. The liquid supply pipe is connected on the plate, and the liquid return pipe is connected to the blocking plate on one side of the uppermost unit plate body. 2 . The single-plate evaporator for ice making according to claim 1 , wherein the rib is straight or wavy, and the cross-section of the rib is arc-shaped or triangular. 3 . 3. The single-plate evaporator for ice making according to claim 1, characterized in that, the number of ribs in each of the circulation channels is 8-20, and the width of the ribs is 0.3-1.8 mm, The height of the ribs is 0.4-2.1 mm, and the distance between adjacent ribs is 1.2-3.6 mm. 4. The single-plate evaporator for ice making according to claim 1, characterized in that, the splicing assembly includes a raised strip on the top side of the unit plate body, the raised strip is a dovetail-shaped strip body, and the The splicing assembly also includes a groove located on the bottom side of the unit plate body, the groove is a dovetail groove, and the protruding strip is inserted into the groove to form a fitting engagement. 5. The single-plate evaporator for ice making according to claim 4, wherein the unit plate body located at the uppermost part is fixedly connected to the installation rib, and the bottom side of the installation rib is provided with a dovetail groove, so that The protruding strips on the top side of the unit board are inserted into the dovetail grooves to form a fit and snap connection. 6. The single-plate evaporator for ice making according to claim 1, wherein a fixed plate is fixed on the outer wall of the blocking plate, the fixed plate has vertical plates and horizontal plates, and the vertical plate The plate is fixedly attached to the outer wall of the blocking plate, and the horizontal plate is opened with an installation hole. 7. The operation method of the single-plate evaporator according to claim 1, characterized in that it comprises the following steps: 1) Connect the evaporator to the heat exchange cycle system, and send the heat exchange agent to the liquid supply pipe of the evaporator through the compressor; 2) The heat exchange agent enters the unit plate at the bottom of the evaporator, flows from one side of the unit plate to the other side through several circulation channels, reaches the other side, and then enters the upper adjacent unit plate through the connected blocking plate , so that the serpentine bending flow path is performed in several blocking plates and several unit plates, and the surface of the evaporator is cooled during the flow of the heat exchange medium, and the heat exchange medium finally flows out of the evaporator through the liquid return pipe; 3) Switch the direction of the flow path, and send the heat exchange agent to the liquid return pipe of the evaporator through the compressor; 4) The heat exchange agent enters the uppermost unit plate body of the evaporator, flows from one side of the unit plate body to the other side through several circulation channels, reaches the other side, and then enters the adjacent unit plate body below through the connected blocking plate , so that the serpentine bending flow path is performed in several blocking plates and several unit plates, and the surface of the evaporator is heated during the flow of the heat exchange agent, and the heat exchange agent finally flows out of the evaporator through the liquid supply pipe. 8. The operation method according to claim 7, characterized in that, when the heat transfer agent flows through the circulation channel, it collides with the ribs in it, so that the turbulence of the heat transfer agent is enhanced and the residence time of the heat transfer agent is prolonged. The convex rib surface increases the contact area with the heat exchange medium. 9. The operation method according to claim 7, characterized in that the more complicated the shape of the ribs, the better the heat exchange effect; the more the number of ribs, the better the heat exchange effect; the larger the rib size, the better the heat exchange effect The better the thermal effect; the smaller the pitch of the ribs, the better the heat transfer effect. 10. The operation method according to claim 7, characterized in that, the unit plate body is made of aluminum alloy material, and the blocking plate is made of aluminum alloy material.