CN214223841U - Plate heat exchanger - Google Patents

Abstract

The utility model discloses a plate heat exchanger, set up first heat transfer board and second heat transfer board including a plurality of intervals, the both sides face and two adjacent first heat transfer boards of second heat transfer board form heat transfer chamber and heat source chamber respectively, be equipped with the first through-hole with heat source chamber intercommunication on every first heat transfer board, a plurality of first through-holes form first fluid passage, first fluid passage has heat source import or heat source export, heat source import or heat source export communicate through the heat source chamber that first fluid passage corresponds with every first through-hole, plate heat exchanger still includes actuating mechanism and sealing member, the inner peripheral surface sealing connection of sealing member outer peripheral face and first through-hole, actuating mechanism is used for driving the axial displacement of sealing member in first fluid passage. The utility model discloses a set up the sealing member in plate heat exchanger, removed the quantity that has realized participating in the heat transfer board of heat transfer through changing plate heat exchanger and adjusted this plate heat exchanger's heat exchange efficiency in first fluid passage through the drive sealing member.

Description

Plate heat exchanger

Technical Field

The utility model relates to a heat exchange field, concretely relates to plate heat exchanger.

Background

The plate heat exchanger is a heat exchanger with compact structure and high efficiency, and can be widely applied to industries such as power, chemical industry, food, air conditioner, heat supply, machinery and the like. The plate heat exchanger is formed by stacking a plurality of stamped thin plates, the plates are separated to form heat exchange source fluid channels and heat exchange fluid channels which are arranged alternately, and in the working process, the heat exchange source fluid and the heat exchange fluid flow through the heat exchanger on two opposite sides of each plate to realize heat exchange.

The heat exchange efficiency of the existing plate heat exchanger is generally fixed after production, the heat exchange efficiency is determined by the quantity of heat exchange fins of the plate heat exchanger, and the heat exchange efficiency cannot be adjusted in the later stage when the plate heat exchanger is used. For example, when a user uses the bathing function of the heating stove with the plate heat exchanger, the heating water is subjected to small circulation in the heating stove, exchanges heat with high-temperature flue gas, and then heats the bathing water through the plate heat exchanger. If the leaving water temperature of the required running water that the user set up differs less with the temperature of intaking of domestic water, then the heating stove can work in order to reach the user and set for the temperature with relatively less load, but the heating stove has minimum power value, especially when using in summer, the temperature of intaking of domestic water is higher, the heating stove even work under the state of minimum power, the leaving water temperature of live water also can be higher than the user and set for the temperature, if can not adjust plate heat exchanger's heat exchange efficiency, can make the temperature that the living water is higher than the temperature of settlement after the heat transfer, the very big influence user experience of this situation, scald the user even.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is overcome the defect that plate heat exchanger's heat exchange efficiency can not be adjusted among the prior art, provide a plate heat exchanger that can adjust heat exchange efficiency.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a plate heat exchanger comprises a plurality of first heat exchange plates and a plurality of second heat exchange plates, the first heat exchange plates and the second heat exchange plates are arranged at intervals, two side surfaces of the second heat exchange plates and two adjacent first heat exchange plates form a heat exchange cavity and a heat source cavity respectively, each first heat exchange plate is provided with a first through hole communicated with the heat source cavity, a plurality of first through holes form a first fluid channel, the first fluid channel is provided with a heat source inlet or a heat source outlet, the heat source inlet or the heat source outlet is communicated with the heat source cavity corresponding to each first through hole through the first fluid channel, the plate heat exchanger also comprises a driving mechanism and a sealing element, the outer peripheral surface of the sealing element is hermetically connected with the inner peripheral surface of the first through hole, the drive mechanism is configured to drive the seal member to move axially within the first fluid passageway.

In the scheme, a sealing piece is arranged in a first fluid channel into which a heat exchange source fluid of the plate heat exchanger enters, the sealing piece is driven to move in the first fluid channel through a driving mechanism, so that the sealing piece blocks a water inlet which enters a heat source cavity in a first through hole of the heat exchange plate at the corresponding position, and the first fluid channel at the rear side of the sealing piece is prevented from being communicated with the first fluid channel at the front side, and then the heat exchange source fluid is prevented from flowing into the heat source cavities of the first heat exchange plate at the corresponding position and the first heat exchange plate at the rear side. The heat exchange efficiency of the plate heat exchanger can be adjusted by changing the number of the heat exchange plates participating in heat exchange of the plate heat exchanger.

Preferably, the driving mechanism includes a stepping motor, a screw rod and a sliding sleeve, the screw rod is connected with an output shaft of the stepping motor, the sliding sleeve has an internal thread matched with the screw rod, the sliding sleeve is arranged on the screw rod, the outer peripheral surface of the sliding sleeve is in sliding contact with the inner peripheral surface of the first fluid channel, and the sealing element is arranged on the sliding sleeve.

In the scheme, the screw rod is driven to rotate through the stepping motor, so that the sliding sleeve in threaded connection with the screw rod axially slides in the first fluid channel, the sealing element is further driven to axially move in the first fluid channel, the quantity of heat source cavities into which the heat exchange source fluid flows is controlled by changing the position of the sealing element, and the quantity of the heat exchange plates participating in heat exchange is changed to change the heat exchange efficiency of the plate heat exchanger.

Preferably, the driving mechanism comprises an electromagnetic attraction mechanism and a valve rod, one end of the valve rod is connected with the sealing element, and the other end of the valve rod is connected with the electromagnetic attraction mechanism.

In this scheme, through the axial displacement of electromagnetic actuation mechanism control sealing member in first fluid passage, simple structure.

Preferably, the first fluid channel has a heat source inlet, each of the first heat exchange plates further has a plurality of second through holes communicated with the heat source cavity, the plurality of second through holes form a second fluid channel, the second fluid channel has a heat source outlet, and the heat source outlet is communicated with the heat source cavity corresponding to each of the second through holes through the second fluid channel.

In the scheme, the second through holes of the plurality of first heat exchange plates form a second fluid channel, so that the heat source fluid in the heat source cavity is discharged through a uniform flow path after heat exchange.

Preferably, each of the second heat exchange plates is provided with a third through hole communicated with the heat exchange cavity, the plurality of third through holes form a third fluid channel, the third fluid channel is provided with a cold source inlet, and the cold source inlet is communicated with the heat exchange cavity corresponding to each of the third through holes through the third fluid channel.

In the scheme, a third fluid channel is formed by the third through hole on the second heat exchange plate, so that the fluid to be subjected to heat exchange can conveniently flow into the heat exchange cavity through the third fluid channel to exchange heat.

Preferably, each of the second heat exchange plates is provided with a fourth through hole communicated with the heat exchange cavity, the fourth through holes form a fourth fluid channel, the fourth fluid channel is provided with a cold source outlet, and the cold source outlet is communicated with the heat exchange cavity corresponding to each of the fourth through holes through the fourth fluid channel.

In the scheme, the fourth fluid channel is formed by the fourth through hole on the second heat exchange plate, so that the fluid to be subjected to heat exchange can conveniently flow out of the heat exchange cavity through the fourth fluid channel after heat exchange.

Preferably, the first heat exchange plate is provided with a first communication hole and a second communication hole, the first communication hole and the third communication hole are correspondingly communicated to form the third fluid channel, and the second communication hole and the fourth communication hole are correspondingly communicated to form the fourth fluid channel.

In this scheme, through set up the intercommunicating pore that corresponds with third through-hole and fourth through-hole of second heat transfer board on first heat transfer board for when a plurality of first heat transfer boards and second heat transfer board superpose, can form continuous third fluid passageway and fourth fluid passageway.

Preferably, the first communication hole has an aperture equal to that of the third through hole, and the second communication hole has an aperture equal to that of the fourth through hole.

In this embodiment, the first communication hole and the second communication hole are equal to each other, so that the first fluid channel and the second fluid channel are prevented from forming a depression to affect the normal flow of the fluid.

Preferably, a third communication hole and a fourth communication hole are formed in the second heat exchange plate, the third communication hole is correspondingly communicated with the first through hole to form the first fluid channel, and the fourth communication hole is correspondingly communicated with the second through hole to form the second fluid channel;

the aperture of the third communication hole is equal to the aperture of the first through hole, and the aperture of the fourth communication hole is equal to the aperture of the second through hole.

In this scheme, through set up the intercommunicating pore that corresponds with first through-hole and the second through-hole of first hot plate on the second heat transfer board for when a plurality of first heat transfer boards and second heat transfer board superpose, can form continuous first fluid passageway and second fluid passageway. By making the aperture of the third communicating hole equal to that of the first communicating hole and the aperture of the fourth communicating hole equal to that of the second communicating hole, the formation of a depression in the first fluid passage and the second fluid passage is prevented from affecting the normal flow of the fluid.

Preferably, the first through hole and the second through hole are arranged at diagonal positions of two opposite ends of the first heat exchange plate, and the third through hole and the fourth through hole are arranged at diagonal positions of two opposite ends of the second heat exchange plate.

In this scheme, through adopting above-mentioned structure for heat source fluid and wait to change hot-fluid can have longer route of flowing through respectively in heat source chamber and heat transfer intracavity, improve the heat transfer effect.

On the basis of the common knowledge in the field, the above preferred conditions can be combined at will to obtain the preferred embodiments of the present invention.

The utility model discloses an actively advance the effect and lie in: the utility model discloses a set up the sealing member in the first fluid passage that plate heat exchanger's heat transfer source fluid got into, remove in first fluid passage through actuating mechanism drive sealing member, make the sealing member block up the water inlet that gets into the heat source chamber in the first through-hole of corresponding position heat transfer board to prevent the first fluid passage of this sealing member rear side and the first fluid passage intercommunication of front side, and then prevent the heat source chamber that heat transfer source fluid flows into corresponding position heat transfer board and rear side heat transfer board. The heat exchange efficiency of the plate heat exchanger can be adjusted by changing the number of the heat exchange plates participating in heat exchange of the plate heat exchanger.

Drawings

Fig. 1 is a schematic structural diagram of a plate heat exchanger in embodiment 1 of the present invention.

Fig. 2 is an exploded view of the heat exchanger body of fig. 1.

Fig. 3 is an exploded view of the driving mechanism of fig. 1.

Fig. 4 is a partially enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic partial structure diagram of the first fluid channel according to embodiment 1 of the present invention.

Fig. 6 is a schematic structural diagram of a plate heat exchanger in embodiment 2 of the present invention.

Fig. 7 is an exploded view of the drive mechanism of fig. 6.

Description of reference numerals:

heat exchanger body 100

First fluid channel 101

Water inlet 1011

Second fluid channel 102

Third fluid passage 103

Fourth fluid passage 104

First heat exchange plate 110

First via hole 111

Second via 112

The first communication hole 113

Second communication hole 114

First groove 115

Second heat exchange plate 120

Third through hole 121

Fourth via 122

Third communication hole 123

Fourth communication hole 124

Second groove 125

Housing 130

Stepping motor 200

Output shaft 201

Screw 202

Sliding sleeve 203

Seal 300

Electromagnetic attraction mechanism 400

Valve stem 401

Detailed Description

The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.

Example 1

As shown in fig. 1 to 5, the plate heat exchanger of the present embodiment includes a heat exchanger body 100, a sealing member 300, and a driving mechanism for driving the sealing member 300 to move axially. The heat exchanger body 100 comprises a plurality of first heat exchange plates 110, a plurality of second heat exchange plates 120 and a shell 130, wherein the first heat exchange plates 110 and the second heat exchange plates 120 are arranged in the shell 130 at intervals, the side surfaces of the first heat exchange plates 110 and the second heat exchange plates 120 are respectively provided with a first groove 115 and a second groove 125, and when two side surfaces of the second heat exchange plates 120 are overlapped with two adjacent first heat exchange plates 110, the two side surfaces of the first heat exchange plates 110 and the two side surfaces of the second heat exchange plates 120 are equally divided into a heat exchange cavity and a heat source cavity through the first grooves 115 and the second grooves 125. Each first heat exchange plate 110 is provided with a first through hole 111 communicated with a heat source cavity, the plurality of first through holes 111 form a first fluid channel 101, the first fluid channel 101 has a heat source inlet, and the heat source inlet is communicated with the heat source cavity corresponding to each first through hole 111 through the first fluid channel 101. The outer peripheral surface of the seal member 300 is sealingly connected to the inner peripheral surface of the first through-hole 111, and the driving mechanism is configured to drive the seal member 300 to axially move in the first fluid passage 101.

In this embodiment, by arranging the sealing member 300 in the first fluid channel 101 into which the heat exchange source fluid of the plate heat exchanger enters, the sealing member 300 is driven by the driving mechanism to move in the first fluid channel 101, so that the sealing member 300 blocks the water inlet 1011 entering the heat source cavity in the first through hole 111 of the first heat exchange plate 110 at the corresponding position, and the first fluid channel 101 at the rear side of the sealing member 300 is prevented from communicating with the first fluid channel 101 at the front side, thereby preventing the heat exchange source fluid from flowing into the heat source cavity of the first heat exchange plate 110 at the corresponding position and the first heat exchange plate 110 at the rear side. The heat exchange efficiency of the plate heat exchanger can be adjusted by changing the number of the heat exchange plates participating in heat exchange of the plate heat exchanger.

As shown in fig. 3 to 5, the driving mechanism in this embodiment includes a stepping motor 200, a screw 202, and a sliding sleeve 203, the screw 202 is connected to an output shaft 201 of the stepping motor 200, the sliding sleeve 203 has an internal thread that engages with the screw 202, the sliding sleeve 203 is disposed on the screw 202, an outer peripheral surface of the sliding sleeve 203 is in sliding contact with an inner peripheral surface of the first fluid passage 101, and the seal 300 is mounted on the sliding sleeve 203.

The screw 202 is driven to rotate by the stepping motor 200, so that the sliding sleeve 203 in threaded connection with the screw 202 axially slides in the first fluid channel 101, the sealing element 300 is further driven to axially move in the first fluid channel 101, the number of heat source cavities into which the heat exchange source fluid flows is controlled by changing the position of the sealing element 300, and the number of heat exchange plates participating in heat exchange is changed to change the heat exchange efficiency of the plate heat exchanger.

As shown in fig. 1-2, each first heat exchange plate 110 is further provided with a plurality of second through holes 112 communicating with the heat source cavity, the plurality of second through holes 112 form a second fluid channel 102, the second fluid channel 102 has a heat source outlet, and the heat source outlet communicates with the heat source cavity corresponding to each second through hole 112 through the second fluid channel 102. The second fluid channel 102 is formed by the second through holes 112 of the plurality of first heat exchange plates 110, so that the heat source fluid in the heat source cavity is discharged through a uniform flow path after heat exchange.

Of course, in other embodiments, the sealing member 300 may also be disposed in the second fluid channel 102 formed by the second through hole 112, and the driving mechanism drives the sealing member 300 to move in the second fluid channel 102, so that the sealing member 300 blocks the water outlet, which enters the heat source cavity, in the second through hole 112 of the first heat exchange plate 110 at the corresponding position, and prevents the second fluid channel 102 at the rear side of the sealing member 300 from communicating with the second fluid channel 102 at the front side, thereby preventing the heat exchange source fluid from flowing out of the heat source cavity of the first heat exchange plate 110 at the corresponding position and the first heat exchange plate 110 at the rear side, and it is also possible to adjust the heat exchange efficiency of the plate heat exchanger by changing the number of heat exchange plates participating in heat exchange of the plate heat exchanger.

As shown in fig. 2, each second heat exchange plate 120 is provided with a third through hole 121 communicated with the heat exchange cavity, the plurality of third through holes 121 form a third fluid channel 103, the third fluid channel 103 has a cold source inlet, and the cold source inlet is communicated with the heat exchange cavity corresponding to each third through hole 121 through the third fluid channel 103. By forming the third fluid channel 103 with the third through holes 121 on the second heat exchange plate 120, the fluid to be heat exchanged can be facilitated to flow into the heat exchange cavity for heat exchange through the third fluid channel 103.

As shown in fig. 2, each second heat exchange plate 120 is provided with a fourth through hole 122 communicated with the heat exchange cavity, the plurality of fourth through holes 122 form a fourth fluid channel 104, the fourth fluid channel 104 has a cold source outlet, and the cold source outlet is communicated with the heat exchange cavity corresponding to each fourth through hole 122 through the fourth fluid channel 104. By forming the fourth fluid passage 104 with the fourth through hole 122 on the second heat exchange plate 120, the fluid to be heat exchanged can flow out of the heat exchange cavity through the fourth fluid passage 104 after heat exchange.

As shown in fig. 2, the first heat exchange plate 110 is provided with a first communication hole 113 and a second communication hole 114, the first communication hole 113 is communicated with the third communication hole 121 to form a third fluid channel 103, and the second communication hole 114 is communicated with the fourth communication hole 122 to form a fourth fluid channel 104. By providing communication holes on the first heat exchange plate 110 corresponding to the third and fourth through holes 121 and 122 of the second heat exchange plate 120, when a plurality of the first and second heat exchange plates 110 and 120 are stacked, the continuous third and fourth fluid passages 103 and 104 may be formed.

In the present embodiment, the aperture of the first communication hole 113 is equal to the aperture of the third communication hole 121, and the aperture of the second communication hole 114 is equal to the aperture of the fourth communication hole 122. By making the aperture of the first communication hole 113 equal to that of the third communication hole 121 and the aperture of the second communication hole 114 equal to that of the fourth communication hole 122, it is possible to prevent the formation of a recessed portion in the third fluid passage 103 and the fourth fluid passage 104 from affecting the normal flow of the fluid.

Of course, in other embodiments, the aperture of the second communication hole 114 may be different from that of the fourth through hole 122, but the aperture of the first communication hole 113 is different from that of the third through hole 121.

As shown in fig. 2, in the present embodiment, the second heat exchange plate 120 is provided with a third communication hole 123 and a fourth communication hole 124, the third communication hole 123 is arranged to communicate with the first through hole 111 to form the first fluid channel 101, and the fourth communication hole 124 is arranged to communicate with the second through hole 112 to form the second fluid channel 102. The aperture of the third communication hole 123 is equal to the aperture of the first through hole 111, and the aperture of the fourth communication hole 124 is equal to the aperture of the second through hole 112.

By providing communication holes on the second heat exchange plate 120 corresponding to the first and second through- holes 111 and 112 of the first heat exchange plate, it is possible to form the continuous first and second fluid passages 101 and 102 when a plurality of first and second heat exchange plates 110 and 120 are stacked. By making the aperture of the third communication hole 123 equal to the aperture of the first through hole 111 and the aperture of the fourth communication hole 124 equal to the aperture of the second through hole 112, it is avoided that the formation of a depression in the first fluid channel 101 and the second fluid channel 102 affects the normal flow of the fluid.

In other embodiments, the aperture of the fourth communication hole 124 may be larger or smaller than the aperture of the second communication hole 112, but the aperture of the third communication hole 123 must be larger than the aperture of the first communication hole 111, which would otherwise be detrimental to the axial movement of the seal 300 in the first fluid channel 101.

As shown in fig. 2, the first through hole 111 and the second through hole 112 are disposed at diagonal positions of opposite ends of the first heat exchange plate 110, and the third through hole 121 and the fourth through hole 122 are disposed at diagonal positions of opposite ends of the second heat exchange plate 120. By adopting the structure, the heat source fluid and the fluid to be exchanged can have longer flowing paths in the heat source cavity and the heat exchange cavity respectively, and the heat exchange effect is improved.

Example 2

As shown in fig. 6 to 7, the present embodiment is substantially the same as embodiment 1 except for a driving mechanism that controls the circumferential movement of the sealing member 300 in the first fluid passage 101. The driving mechanism in this embodiment includes an electromagnetic attraction mechanism 400 and a valve rod 401, one end of the valve rod 401 is connected to the sealing member 300, and the other end of the valve rod 401 is connected to the electromagnetic attraction mechanism 400.

The sealing member 300 is controlled to move axially in the first fluid passage 101 by the electromagnetic attraction mechanism 400, and the structure is simple. During specific control, the magnitude and direction of the magnetic force are changed by changing the magnitude and direction of the current flowing through the electromagnetic coil inside the electromagnetic attraction mechanism 400, so as to drive the displacement direction and magnitude of the valve rod 401.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (10)

1. A plate heat exchanger comprises a plurality of first heat exchange plates and a plurality of second heat exchange plates, the first heat exchange plates and the second heat exchange plates are arranged at intervals, two side surfaces of the second heat exchange plates and two adjacent first heat exchange plates form a heat exchange cavity and a heat source cavity respectively, each first heat exchange plate is provided with a first through hole communicated with the heat source cavity, a plurality of first through holes form a first fluid channel, the first fluid channel is provided with a heat source inlet or a heat source outlet, the heat source inlet or the heat source outlet is communicated with the heat source cavity corresponding to each first through hole through the first fluid channel, it is characterized in that the plate heat exchanger also comprises a driving mechanism and a sealing element, the peripheral surface of the sealing element is hermetically connected with the inner peripheral surface of the first through hole, the drive mechanism is configured to drive the seal member to move axially within the first fluid passageway.

2. The plate heat exchanger according to claim 1, wherein the driving mechanism includes a stepping motor, a screw rod connected to an output shaft of the stepping motor, and a sliding sleeve having an internal thread engaged with the screw rod, the sliding sleeve being provided on the screw rod, an outer circumferential surface of the sliding sleeve being in sliding contact with an inner circumferential surface of the first fluid passage, the seal being mounted on the sliding sleeve.

3. The plate heat exchanger of claim 1, wherein the driving mechanism includes an electromagnetic attraction mechanism and a valve stem, one end of the valve stem is connected to the sealing member, and the other end of the valve stem is connected to the electromagnetic attraction mechanism.

4. The plate heat exchanger of claim 1 wherein the first fluid passages have a heat source inlet, and wherein each of the first heat exchanger plates further has a plurality of second through-holes formed therein that communicate with the heat source cavity, the plurality of second through-holes forming a second fluid passage having a heat source outlet that communicates with the heat source cavity corresponding to each of the second through-holes through the second fluid passage.

5. The plate heat exchanger as claimed in claim 4, wherein each of the second heat exchange plates is provided with a third through hole communicated with the heat exchange cavity, a plurality of the third through holes form a third fluid channel, the third fluid channel is provided with a cold source inlet, and the cold source inlet is communicated with the heat exchange cavity corresponding to each of the third through holes through the third fluid channel.

6. The plate heat exchanger as claimed in claim 5, wherein each of the second heat exchange plates is provided with a fourth through hole communicated with the heat exchange cavity, a plurality of the fourth through holes form a fourth fluid channel, the fourth fluid channel is provided with a cold source outlet, and the cold source outlet is communicated with the heat exchange cavity corresponding to each of the fourth through holes through the fourth fluid channel.

7. The plate heat exchanger according to claim 6, wherein the first heat exchange plate is provided with a first communication hole and a second communication hole, the first communication hole and the third communication hole are correspondingly communicated to form the third fluid channel, and the second communication hole and the fourth communication hole are correspondingly communicated to form the fourth fluid channel.

8. The plate heat exchanger according to claim 7, wherein the first communication hole has an aperture equal to an aperture of the third through hole, and the second communication hole has an aperture equal to an aperture of the fourth through hole.

9. The plate heat exchanger according to claim 6, wherein a third communication hole and a fourth communication hole are arranged on the second heat exchange plate, the third communication hole is correspondingly communicated with the first through hole to form the first fluid channel, and the fourth communication hole is correspondingly communicated with the second through hole to form the second fluid channel;

the aperture of the third communication hole is equal to the aperture of the first through hole, and the aperture of the fourth communication hole is equal to the aperture of the second through hole.

10. The plate heat exchanger of claim 5 wherein the first and second through-holes are located diagonally at opposite ends of the first heat exchanger plate and the third and fourth through-holes are located diagonally at opposite ends of the second heat exchanger plate.

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