Heat cycle reinforced plate heat exchanger

Abstract

The utility model discloses a heat cycle reinforced plate heat exchanger which comprises a heated pipe set, a heat supply pipe set and a heat exchange mechanism. The heated pipe set and the heat supply pipe set are both connected to the heat exchange mechanism, a refrigerant is introduced into the heated pipe set, a heating medium is introduced into the heat supply pipe set, the refrigerant and the heating medium both flow into the heat exchange mechanism, and the heat exchange mechanism is used for heat exchange. The heat exchange mechanism comprises a plurality of heat exchange pieces, and flow channels are formed in the surfaces of the heat exchange pieces and conform to the distribution shape of veins or the distribution shape of lung tracheas. According to the heat exchange piece structure, fluid is not prone to being blocked, pressure drop is reduced, the flow speed of a medium is increased, meanwhile, the heat medium circulates many times in cooperation with a circulating pump, the heat exchange effect is not affected, meanwhile, the impurity accumulation probability is reduced, and normal heat exchange can be achieved even for high-viscosity fluid.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the heat exchange field, concretely relates to a heat cycle reinforced plate heat exchanger. BACKGROUND

[0002] Plate heat exchanger is the type frequently used in heat exchanger, because its excellent heat transfer performance is frequently applied in each field, the traditional plate heat exchanger is installed on the mounting frame by multiple heat exchange plates mutually adhering, the edge between two adjacent heat exchange sheets is provided with sealing strip to form fluid passage between two heat exchange sheets, the heat exchange sheet has liquid inlet, and the sealing strip is provided with blocking at the liquid inlet according to requirement, after the refrigerant fluid and heat medium fluid are passed in, the sealing strip is used to guide flow of two, and the refrigerant is separated and arranged on both sides of heat exchange plate to exchange heat;The surface of heat exchange sheet is provided with special-shaped flow channel to guide flow of refrigerant and heat medium;

[0003] The heat medium used in heat exchange is often waste water or waste gas after production, and the residual heat of the heat medium is utilized by passing into the heat exchanger, but the impurities in the heat medium can form a certain friction resistance with the flow channel, which can reduce the pressure of the fluid passing in, this phenomenon is called pressure drop, the traditional plate heat exchanger is limited by the structure of heat exchange sheet, when the heat medium is high-viscosity flue gas, the pressure drop is particularly obvious due to the high adsorption of the heat medium, the pressure drop can affect the flow rate and heat transfer efficiency, and the low flow rate can cause impurities to accumulate and easily cause heat exchange sheet to scale, therefore, a heat exchanger with small pressure drop and high heat exchange efficiency needs to be proposed. CONTENT OF UTILITY MODEL

[0004] To solve the above problems, the application provides a heat cycle reinforced plate heat exchanger, which comprises a transport pipe group and a heat exchange mechanism.

[0005] The heat exchange mechanism comprises a plurality of heat exchange sheets, the heat exchange sheets are connected to each other to form a plurality of heat medium gaps and refrigerant gaps, the refrigerant gaps and the heat medium gaps are staggered to be used for heat exchange, the surface of the heat exchange sheet is provided with a flow channel, and the flow channel is arranged in the shape of vein distribution or lung air duct distribution.

[0006] The transport pipe group comprises a refrigerant pipeline and a heat medium pipeline, the refrigerant pipeline is communicated with the refrigerant gap, the heat medium pipeline is communicated with the heat medium gap, and the transport pipe group transports refrigerant and heat medium to the refrigerant gap and the heat medium gap respectively.

[0007] The structure of the flow channel is more consistent with the structure of fluid flow by using bionics design, the flow channel of the heat exchange sheet is more consistent with the natural flow of fluid, so as to reduce the resistance between the fluid and the flow channel, and compared with the traditional flow channel structure, the pressure drop can be greatly reduced.

[0008] Further, the plurality of heat exchange sheet arrays are distributed, the heat exchange sheet is rectangular, the long side of the middle heat exchange sheet of each adjacent three heat exchange sheets is connected with the long side of one of the heat exchange sheets, and the short side of the middle heat exchange sheet is connected with the short side of the other heat exchange sheet to form staggered heat medium gaps and refrigerant gaps.

[0009] That is, a cuboid type heat exchanger is formed, one of which is a heat medium gap and the other of which is a refrigerant gap, and the two are perpendicular to each other.

[0010] Further, the heat exchange mechanism further comprises a shell connected to the four corners of the heat exchange sheet, and the connection between the shell and the heat exchange sheet is provided with a partition plate to block the heat medium gap and the refrigerant gap.

[0011] Further, the flow channel comprises a main flow channel and a branch flow channel, the branch flow channel and the main flow channel are connected to each other, and the branch flow channel and / or the main flow channel are provided with an array of recesses; the area of the recess can be set to microns; when the fluid flows at high speed through the recess, the structure of the recess will make the fluid flow into the recess under the action of pressure, at this time the flow directions of the fluid above the recess and the fluid in the recess are inconsistent, thus generating local vortex flow, thereby increasing the heat transfer efficiency.

[0012] Alternatively, a plurality of vortex members are arranged in the flow channel, the vortex member is in the shape of an arc-shaped sheet, the vortex member is arranged in accordance with the flow direction of the fluid, the vortex member is bent in the direction perpendicular to the heat exchange sheet, that is, taking the connection point of the vortex member and the flow channel as the origin, the extension direction of the vortex member is the X direction, the direction perpendicular to the bottom surface of the flow channel is the Z direction, and the thickness direction of the vortex member is the Y direction, the vortex member is bent in the Y direction in the plane of the Z direction, the fluid can generate vortex flow in the radial direction of the flow channel when flowing, thereby increasing the heat transfer efficiency, and at the same time, since the fluid flow direction is not hindered, the pressure drop is not increased too much.

[0013] The vortex member can also be slightly bent in the Y direction in the X direction, but since the bending will hinder the flow of the fluid, although the heat transfer efficiency is increased, the pressure drop is also increased.

[0014] Further, the vortex member is provided with a plurality of through holes, and the porosity of the vortex member in the flow direction of the fluid increases in sequence. Increasing the through holes on the vortex member further reduces the obstruction of the vortex member to the medium. Since the water pressure is lower when the medium flows further downstream after entering the flow channel, the porosity of the vortex member upstream of the flow channel is low, and the porosity of the vortex member downstream of the flow channel is high.

[0015] Further, the surface of the heat exchange sheet is provided with an anti-corrosion film layer; preferably a microbial film, which resists corrosion of the heat exchange sheet by the medium through biological activity, so that the microorganisms absorb and decompose impurities attached to the surface of the heat exchange sheet, or absorb oxygen on the surface of the heat exchange sheet to make the surface of the heat exchange sheet lack the main condition for rusting, thereby preventing rusting.

[0016] Further, the heat medium pipeline comprises a conveying pipe and an output pipe, a circulating pipe is arranged between the conveying pipe and the output pipe, the circulating pipe is provided with a circulating pump, and the circulating pipe is provided with a valve; the circulating pump is arranged, so that the heat medium circulates in the heat exchange mechanism for multiple times, the heat of the heat medium is fully utilized, the heat exchange is not insufficient due to too high flow speed, heat waste is avoided, and accumulation of impurities is also avoided.

[0017] Further, the circulating pump and the valve are both connected with a control element; when the heat medium circulates for a certain number of times, the control element controls the circulating pump and the valve to discharge the heat medium and replace new heat medium; the control element can be realized by using the prior art, and thus will not be described here.

[0018] Further, the shell is provided with a heat medium inlet, and the heat medium inlet is provided with a booster pump; the booster pump is used to increase the pressure of the medium entering the flow channel, so that the flow speed is increased, the impurities are prevented from accumulating in the flow channel, and the fouling is slowed down, and the heat transfer efficiency is also increased.

[0019] Further, the heat exchange sheet is provided with an ultrasonic element; the ultrasonic element emits ultrasonic waves to the heat medium gap, the medium is vibrated by the ultrasonic waves, the mutual movement between the flue gas and the waste water is intensified, the medium moves in a micro level, the heat is more easily dissipated, and the heat transfer efficiency is increased.

[0020] The utility model discloses the beneficial effect lies in:

[0021] (1) the heat exchange sheet structure of the utility model is not easy to cause the hindrance to fluid, has reduced the pressure drop, has strengthened the flow speed of medium, and the heat medium circulates for multiple times with cooperation of the circulating pump, reaches the heat exchange effect of not being influenced while reducing the probability of impurity accumulation, even if the fluid of big viscosity still does not influence the heat exchange, especially suitable for the waste flue gas's waste heat recovery, has improved the waste heat recovery effect.

[0022] (2) the utility model sets up the structure that can make medium produce vortex in the flow channel, makes the heat medium flow in the flow channel fast with cooperation of the booster pump and the circulating pump, and the heat transfer efficiency is strengthened. DRAWINGS

[0023] The drawings described here are used to provide further understanding of the present application, and form a part of the present application, the illustrative embodiment of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation to the present application.

[0024] Figure 1 It is whole structure schematic diagram for the utility model embodiment;

[0025] Figure 2 It is internal structure schematic diagram for the heat exchange mechanism of the utility model embodiment;

[0026] Figure 3 It is heat exchange sheet connection schematic diagram for the utility model embodiment;

[0027] Figure 4 It is heat exchange fin flow channel distribution structure schematic diagram of the embodiment of the utility model;

[0028] Figure 5 It is main flow channel A place structure amplification schematic diagram of the embodiment of the utility model;

[0029] Figure 6 It is branch flow channel B place structure amplification schematic diagram of the embodiment of the utility model;

[0030] In the drawing: 1-heat exchange mechanism, 11-heat exchange fin, 111-main flow channel, 112-branch flow channel, 113-pit, 12-vortex piece, 121-through hole, 13-refrigerant gap, 14-heat medium gap, 15-housing, 151-ultrasonic element, 2-transport pipe group, 21-heat medium pipeline, 211-conveying pipe, 212-output pipe, 22-circulation pipe, 221-circulation pump. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0032] In the following description, a lot of specific details are set forth in order to give a thorough understanding of the present application, however, the present application can also be implemented in other ways different from the description herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below.

[0033] In addition, in the description of the present application, it is understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation of the present application.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection, or communication; it can be directly connected, or indirectly connected through intermediate medium, it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact through an intermediate medium. In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0036] As shown in Figures 1-3 , a heat cycle reinforced plate heat exchanger, comprising a transport pipe group 2 and a heat exchange mechanism 1;

[0037] The heat exchange mechanism 1 comprises a plurality of heat exchange plates 11, the heat exchange plates 11 are connected to each other to form a plurality of heat medium gaps 14 and coolant gaps 13, the coolant gaps 13 and the heat medium gaps 14 are staggered for heat exchange, the heat exchange plates 11 are provided with flow channels, the flow channels are arranged in accordance with the distribution shape of leaf veins or the distribution shape of pulmonary bronchus;

[0038] The transport pipe group 2 comprises coolant pipes and heat medium pipes 21, the coolant pipes and the coolant gaps 13 are communicated, the heat medium pipes 21 and the heat medium gaps 14 are communicated, and the transport pipe group 2 transports coolant and heat medium to the coolant gaps 13 and the heat medium gaps 14 respectively.

[0039] The flow channels are designed by using bionics to make the structure of the flow channels more consistent with the structure of fluid flow, so that the flow channels of the heat exchange plates 11 are more consistent with the natural flow of fluid, thereby reducing the resistance between the fluid and the flow channels, and greatly reducing the pressure drop compared with the traditional flow channel structure.

[0040] In one specific embodiment, as shown in Figure 3 , a plurality of heat exchange plates 11 are arrayed, the heat exchange plates 11 are rectangular, the long side of the middle heat exchange plate 11 of every adjacent three heat exchange plates 11 is connected to the long side of one of the heat exchange plates 11, and the short side of the middle heat exchange plate 11 is connected to the short side of the other heat exchange plate 11, so as to form the staggered heat medium gaps 14 and coolant gaps 13.

[0041] That is, a rectangular cuboid type heat exchanger is formed, one of which is the heat medium gap 14, and the other of which is the coolant gap 13, and the two are perpendicular to each other.

[0042] Further, the length of the coolant gap 13 is greater than the length of the heat medium gap 14; the heat medium in the heat medium gap 14 is continuously circulated, and the increase in the flow time of the coolant in the coolant gap 13 is conducive to sufficient heat exchange.

[0043] Further, as shown in Figure 2 The heat exchange mechanism 1 further comprises a housing 15 connected to the four corners of the heat exchange sheet 11, and the connection between the housing 15 and the heat exchange sheet 11 is provided with a partition to separate the heat medium gap 14 and the coolant gap 13.

[0044] In one embodiment, as shown in Figure 4 , 6 The flow channel comprises a main flow channel 111 and a branch flow channel 112, the branch flow channel 112 and the main flow channel 111 are in communication with each other, and the branch flow channel 112 and / or the main flow channel 111 are provided with an array of pits 113; the area of the pit 113 can be set to microns, when the fluid flows at high speed through the pit 113, due to the concave structure of the pit 113, the fluid will flow into the pit 113 under pressure, at this time, the flow direction of the fluid above the pit 113 and the fluid in the pit 113 is inconsistent, which generates local vortex, thereby increasing the heat transfer efficiency.

[0045] In another embodiment, as shown in Figure 5 A plurality of vortex members 12 are arranged in the flow channel, the vortex member 12 is in the shape of an arc-shaped sheet, the vortex member 12 is arranged in accordance with the flow direction of the fluid, the vortex member 12 is curved in the Z direction perpendicular to the heat exchange sheet 11, that is, taking the connection point of the vortex member 12 and the flow channel as the origin, the extension direction of the vortex member 12 is the X direction, the direction perpendicular to the bottom surface of the flow channel is the Z direction, and the thickness direction of the vortex member 12 is the Y direction, the vortex member 12 is curved in the Y direction in the plane of the Z direction, and the fluid can generate vortex in the radial direction of the flow channel when flowing, thereby increasing the heat transfer efficiency, and at the same time, since it does not hinder the flow direction of the fluid, it will not increase the pressure drop too much.

[0046] The vortex member 12 can also be slightly curved in the Y direction in the X direction, but since the curved structure will hinder the flow of the fluid, although it will increase the heat transfer efficiency, it will also increase the pressure drop.

[0047] Further, as shown in Figure 5 The vortex member 12 is provided with a plurality of through holes 1, and the porosity of the vortex member 12 increases in the flow direction of the fluid, and the through holes 1 are arranged on the vortex member 12 to further reduce the resistance of the vortex member 12 to the medium, since the water pressure of the medium flowing in the flow channel becomes lower as it flows further downstream, the porosity of the vortex member 12 upstream of the flow channel is low, and the porosity of the vortex member 12 downstream of the flow channel is high.

[0048] In one embodiment, the surface of the heat exchange sheet 11 is provided with an anti-corrosion film layer; preferably a microbial film, which resists corrosion of the heat exchange sheet 11 by biological activity, so that the microorganisms can absorb and decompose impurities attached to the surface of the heat exchange sheet 11, or absorb oxygen on the surface of the heat exchange sheet 11 to make the surface of the heat exchange sheet 11 lack the main condition for rusting, thereby preventing rusting.

[0049] In one embodiment, as shown in Figure 1 The heat medium pipeline 21 comprises a delivery pipe 2 and an output pipe 212, and a circulating pipe 22 is arranged between the delivery pipe 2 and the output pipe 212, the circulating pipe 22 is provided with a circulating pump 221, and the circulating pipe 22 is provided with a valve; the circulating pump 221 is arranged to make the heat medium circulate in the heat exchange mechanism 1 for multiple times, so as to make full use of the heat of the heat medium, compensate for the insufficient heat exchange caused by too fast flow rate, avoid waste of heat, and also avoid accumulation of impurities.

[0050] Further, the circulating pump 221 and the valve are both connected with a control element, when the heat medium circulates for a certain number of times, the control element controls the circulating pump 221 and the valve to discharge the heat medium and replace it with new heat medium, and the control element can be realized by using the existing technology, which will not be described here.

[0051] In one embodiment, as shown in Figure 2 The shell 15 is provided with a heat medium inlet, and the heat medium inlet is provided with a booster pump to increase the pressure of the medium entering the flow channel, thereby increasing the flow rate and preventing impurities from accumulating in the flow channel, thereby slowing down the fouling, and also increasing the heat transfer efficiency.

[0052] In one embodiment, as shown in Figure 1 The heat exchange sheet 11 is provided with an ultrasonic element 151, the ultrasonic element 151 emits ultrasonic waves to the heat medium gap 14, the ultrasonic waves cause the medium to vibrate, intensify the mutual movement between the flue gas or wastewater, and make the medium move at a micro level, which is more conducive to heat dissipation, thereby increasing the heat transfer efficiency.

[0053] The coolant pipeline introduces the coolant into the coolant gap 13, the heat medium pipeline 21 introduces the high-temperature flue gas into the heat medium gap 14, and the coolant and the hot flue gas flow alternately on both sides of the heat exchange sheet 11 to exchange heat, when a certain amount of flue gas is introduced into the heat exchange mechanism 1, the valve and the circulating pump 221 of the circulating pipe 22 are opened to drive the flue gas to circulate rapidly in the delivery pipe 2, the heat medium gap 14, the output pipe 212, and the circulating pipe 22, at this time, the coolant continues to be heated at a normal speed, the pressure drop of the hot flue gas is reduced under the action of the flow channel of the heat exchange plate, and local vortexes are formed under the action of the dimples 113 and the vortex members 12, thereby increasing the heat transfer efficiency, after circulating for a certain period of time, the circulating pump 221 and the valve are closed, the original flue gas is discharged, and new hot flue gas is introduced to continue the heat exchange.

[0054] The places not described in the present application can be realized by using or referring to the existing technology.

[0055] Each embodiment in the present specification is described in a progressive manner, and the same or similar parts between each embodiment can be understood by mutual reference, and each embodiment mainly describes the differences from other embodiments.

[0056] The above merely provides an example of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the scope of claims of the present application.

Claims

1. A heat exchanger with enhanced thermal circulation, characterized in that, This includes transport pipe assemblies and heat exchange mechanisms; The heat exchange mechanism includes multiple heat exchange plates, which are interconnected to form multiple heat medium gaps and cold medium gaps. The cold medium gaps and heat medium gaps are staggered for heat exchange. The surface of the heat exchange plates is provided with flow channels, which are arranged in accordance with the distribution shape of leaf veins or the distribution shape of lung trachea. The transport pipeline assembly includes a refrigerant pipeline and a heat transfer medium pipeline. The refrigerant pipeline is connected to the refrigerant gap, and the heat transfer medium pipeline is connected to the heat transfer medium gap. The transport pipeline assembly transports refrigerant and heat transfer medium to the refrigerant gap and the heat transfer medium gap, respectively.

2. The heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, Multiple heat exchanger arrays are distributed, and the heat exchanger is rectangular. In every three adjacent heat exchanger arrays, the long side of the middle heat exchanger is connected to the long side of one of the heat exchanger arrays, and the short side of the middle heat exchanger array is connected to the short side of another heat exchanger array, so as to form staggered heat medium gaps and cold medium gaps.

3. The heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, The heat medium pipeline includes a delivery pipe and an output pipe, a circulation pipe is provided between the delivery pipe and the output pipe, the circulation pipe is equipped with a circulation pump, and the circulation pipe is equipped with a valve.

4. The heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, The flow channel includes a main flow channel and a branch flow channel, which are interconnected. The main flow channel or the branch flow channel is provided with an array of recesses.

5. The heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, The flow channel is provided with multiple vortex elements, and the hot medium or the cold medium generates vortices when flowing through the vortex elements.

6. A heat exchanger with enhanced thermal circulation according to claim 2, characterized in that, The heat exchange mechanism also includes a housing, which is connected to the heat exchange plates at the four corners. A partition is provided at the connection between the housing and the heat exchange plates to block the gap between the heat medium and the refrigerant.

7. A heat exchanger with enhanced thermal circulation according to claim 5, characterized in that, The vortex element is provided with multiple through holes, and the porosity of the vortex elements distributed in the flow channel along the fluid flow direction increases sequentially.

8. A heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, The heat exchange plate has an anti-corrosion film layer on its surface.

9. A heat exchanger with enhanced thermal circulation according to claim 6, characterized in that, The casing is provided with a heat medium inlet, and the heat medium inlet is equipped with a booster pump.

10. A heat exchanger with enhanced thermal circulation according to claim 1, characterized in that, The heat exchange mechanism is equipped with ultrasonic elements.

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