TW202138733A - Heat exchanging unit and heat exchanging and storing system - Google Patents

Abstract

A heat exchanging and storing system includes a heat exchanging unit and a heat storing unit. The heat exchanging unit includes a first hot runner plate, a second hot runner plate, and a cold runner plate switched between the first hot runner plate and the second hot runner plate. Each of the first hot runner plate, the second hot runner plate, and the cold runner plate includes at least two runner regions, any adjacent two of the runner regions communicate with each other, and each of the runner regions includes various runners extend along a direction. A first work fluid sequentially flows through the runner regions of the cold runner plate via the runners of the cold runner plate, and a second work fluid sequentially flows through the runner regions of the first hot runner plate and the second hot runner plate via the runners of the of the first hot runner plate and the second hot runner plate. The heat storing unit is stacked with the first hot runner plate. The heat storing unit includes a heat storing plate and a phase change material. The heat storing plate includes various fins which form various heat storing channels. The heat storing channels are filled with the phase change material.

Description

Heat exchange unit and heat exchange heat storage system

The present invention relates to a heat exchange technology, and particularly relates to a heat exchange unit and a heat exchange heat storage system.

Generally speaking, a heat exchanger is a device that allows two working fluids to exchange heat in the form of indirect heat conduction to achieve cooling or heating purposes. The types of heat exchangers mainly include plate heat exchangers, shell and tube heat exchangers, double tube heat exchangers, fin tube heat exchangers, heat pipe heat exchangers, and scraper heat exchangers.

Among these heat exchangers, the plate heat exchanger is formed by stacking cold runner plates and hot runner plates. The working fluid in the cold runner plate and the working fluid in the hot runner plate exchange heat through the plate. The plate heat exchanger has the advantages of good heat transfer performance, small size and light weight, easy installation and replacement, easy maintenance, low cost, wide application, and long service life, and it is one of the most common heat exchangers.

With the increasingly serious energy problem, how to effectively use energy has become an important issue. Therefore, there is an urgent need for a system that can further improve the efficiency of heat exchange and energy storage. Rate of heat exchange unit and heat storage system.

Therefore, one object of the present invention is to provide a heat exchange unit, the cold runner plate and the hot runner plate are both provided with baffles to form several runner areas, and each runner area is provided with multiple runners. The serpentine flow channel design formed by the baffle can increase the heat exchange area and heat exchange time of the overall heat exchange unit when the working fluid changes its flow direction.

Another object of the present invention is to provide a heat exchange heat storage system in which the heat storage plate of the heat storage unit is provided with several fins, and the phase change material (PCM) can be filled in these fins. Several heat storage tanks formed on the hot plate. In this way, the heat conduction area of the phase change heat storage material can be greatly increased, and the phase change heat storage material can conduct heat more efficiently, thereby improving the heat absorption and heat release capabilities of the phase change heat storage material.

Another object of the present invention is to provide a heat exchange heat storage system in which diffusion bonding can be adopted between the cold runner plate and the hot runner plate of the heat exchange unit, and between the heat exchange unit and the heat storage unit. Technology is combined. Therefore, no flux is needed, the joint surface between the two components has no stress effect, and the heat exchange heat storage system can be processed by machining, grinding, heat treatment and other processes after welding, achieving the effect of simplifying the production process of the system.

According to the above objective of the present invention, a heat exchange unit is provided. The heat exchange unit includes a cold runner plate and a hot runner plate. The hot runner plate is stacked on the first side of the cold runner plate. Each cold runner plate and hot runner plate includes the body, to One less baffle and several runners. The baffle extends on the main body in one direction to form at least two flow passage areas on the main body, wherein any two adjacent flow passage areas are communicated with each other. The flow channel extends in the flow channel area in this direction. The runners of the cold runner plate are aligned with the runners of the hot runner plate. The first working fluid flows through the runner area of the cold runner plate through the runners of the cold runner plate in sequence, and the second working fluid flows through the runner area of the hot runner plate through the runners of the hot runner plate in sequence .

According to an embodiment of the present invention, each of the above-mentioned flow channel areas has an inlet branch and an outlet branch opposite to each other, and the outlet branch of the upstream of one of the adjacent flow channel areas is connected with the inlet branch of the downstream. .

According to an embodiment of the present invention, the dimensions in the flow channel area of the above-mentioned cold runner plate are different.

According to an embodiment of the present invention, the flow direction of the first working fluid in one of the flow channels of the cold runner plate is aligned with the flow direction of the second working fluid in the flow path of the hot runner plate. The flow in that one is the same or reverse.

According to an embodiment of the present invention, the aforementioned heat exchange unit further includes another hot runner plate stacked on the second side of the cold runner plate, wherein the second side of the cold runner plate is opposite to the first side.

According to the above objective of the present invention, another heat exchange and heat storage system is proposed. The heat exchange heat storage system includes at least one heat exchange unit and at least one heat storage unit. The heat exchange unit includes a first hot runner plate, a second hot runner plate, and a cold runner plate sandwiched between the first hot runner plate and the second hot runner plate. Each of the first hot runner plate, the second hot runner plate, and the cold runner plate includes at least two runner regions, and any two adjacent runner regions communicate with each other. Each runner area is set There are several flow channels extending in one direction. The first working fluid sequentially flows through the flow channel area of the cold runner plate through the flow channels of the cold runner plate. The second working fluid flows through the flow channels of the first hot runner plate and the second hot runner plate in sequence through the flow channels of the first hot runner plate and the second hot runner plate. The heat storage unit is overlapped with the first hot runner plate. The heat storage unit includes a heat storage plate and a phase change heat storage material. The heat storage plate includes several fins, and these fins form several heat storage tanks. The phase change heat storage material is filled in these heat storage tanks.

According to an embodiment of the present invention, the above-mentioned phase change heat storage material comprises paraffin, salt hydrate, fatty acid, or any combination thereof.

According to an embodiment of the present invention, the flow channels of the first hot runner plate and the flow channels of the second hot runner plate are aligned with the flow channels of the cold runner plate.

According to an embodiment of the present invention, the flow direction of the above-mentioned first working fluid in one of the flow channels of the cold runner plate and the second working fluid in the flow channels of the first hot runner plate and the first hot runner plate Align the flow direction of the flow channel of the cold runner plate in the same or reverse direction.

According to an embodiment of the present invention, each of the above-mentioned first hot runner plate, second hot runner plate, and cold runner plate includes a body and at least one baffle. The baffle extends on the body along a direction to form a flow channel area on the body.

100: heat exchange unit

110: Hot runner plate

110a: The first hot runner plate

110b: The second hot runner plate

111: direction

112: body

112a: Edge

112b: corner

112c: corner

114a: baffle

114b: bezel

116a: runner

116b: runner

116c: runner

118a: runner area

118ai: Inlet runner

118ao: outlet shunt

118b: runner area

118bi: inlet shunt

118bo: Outlet shunt

118c: runner area

118ci: inlet manifold

118co: Outlet shunt

120: entrance

122: exit

124: second working fluid

130: cold runner plate

130a: first side

130b: second side

131: Direction

132: body

132a: Edge

132b: corner

132c: corner

134a: baffle

134b: baffle

136a: runner

136b: runner

136c: runner

138a: runner area

138ai: Inlet runner

138ao: outlet shunt

138b: runner area

138bi: inlet shunt

138bo: Outlet shunt

138c: runner area

138ci: Inlet manifold

138co: Outlet shunt

140: entrance

142: Exit

144: The first working fluid

150: heat exchange unit

170: heat storage plate

172: Fins

174: heat storage tank

174a: opening

180: Phase change heat storage material

190: heat storage unit

200: Heat exchange heat storage system

300: Heat exchange heat storage system

310: cover

320: cold water inlet

322: Cold Water Outlet

330: Hot water inlet

332: Hot water outlet

340: Pipeline sealing water cover

350a: thermocouple

350b: Thermocouple

350c: thermocouple

350d: thermocouple

400: Curve

402: Curve

404: Curve

406: Curve

410: Curve

412: Curve

414: Curve

416: Curve

420: part

In order to make the above and other objectives, features, advantages and embodiments of the present invention more comprehensible, the description of the accompanying drawings is as follows:

[Figure 1] shows a heat exchange unit according to an embodiment of the present invention Perspective schematic diagram of Yuan Zhi;

[Figure 2] is a schematic top view of the hot runner plate of the heat exchange unit of Figure 1;

[Figure 3] is a schematic top view of the cold runner plate of the heat exchange unit of Figure 1;

[Figure 4] is a schematic front view of a heat exchange and heat storage system according to an embodiment of the present invention;

[Figure 5] is a schematic top view of the heat storage unit of the heat exchange heat storage system of Figure 4;

[Fig. 6] is a schematic diagram showing the configuration of a heat exchange and heat storage system according to an embodiment of the present invention;

[Figure 7] is a schematic side view of the heat exchange heat storage system of Figure 6, showing the location of thermocouples;

[Fig. 8] is a perspective schematic diagram of the heat exchange heat storage system of Fig. 6, showing the corresponding positions of the phase change heat storage material and the thermocouple of the heat storage unit;

[Fig. 9] is a schematic top view of the heat exchange heat storage system of Fig. 6, to illustrate the corresponding positions of the phase change heat storage material and the thermocouple of the heat storage unit;

[Figure 10] is a diagram showing the temperature distribution of the phase change heat storage material in the heat exchange heat storage system of Figure 6 after heat exchange;

[Figure 11] is a graph showing the inlet and outlet temperature trends of the cold working fluid and the hot working fluid of the heat exchange and storage system of Figure 6 respectively;

[FIG. 12A] is a graph showing the natural heat dissipation of the phase change heat storage material of the heat exchange heat storage system of FIG. 6; and

[Figure 12B] is a partial enlarged view of the graph of Figure 12A to mark the The latent heat temperature point of the phase change of the heat storage material.

In view of the fact that there is still much room for improvement in the heat exchange efficiency of the conventional plate heat exchanger, the embodiments of the present invention propose a heat exchange unit and a heat exchange heat storage system, the cold runner plate of the heat exchange unit and the heat flow The road plates are equipped with baffles to form a serpentine flow channel design, and the heat storage plate of the heat storage unit is provided with fins to form a heat storage tank to accommodate the phase change heat storage material. Therefore, not only can the effective heat transfer area and heat exchange time be increased, but also the heat transfer area of the phase change heat storage material can be increased, and the heat exchange efficiency and heat storage performance of the heat exchange heat storage system can be greatly improved.

Please refer to FIG. 1, which is a perspective schematic diagram of a heat exchange unit according to an embodiment of the present invention. In some embodiments, the heat exchange unit 100 may mainly include a hot runner plate 110 and a cold runner plate 130. The cold runner plate 130 has a first side 130a and a second side 130b, wherein the first side 130a and the second side 130b are two opposite sides of the cold runner plate 130, respectively. The hot runner plate 110 is stacked on the first side 130 a of the cold runner plate 130 and is attached to the cold runner plate 130. For example, the hot runner plate 110 can be joined to the first side 130a of the cold runner plate 130 by diffusion welding.

Diffusion welding technology is a solid state joining technology. The diffusion welding process uses high temperature and pressure in a vacuum environment to make the distance between the contact surface of the hot runner plate 110 and the cold runner plate 130 reach the atomic distance, so that the contact part of the hot runner plate 110 and the cold runner plate 130 is The atoms are intercalated and diffused and combined, thereby combining the hot runner plate 110 and the cold runner plate 130. Due to diffusion welding The joining process does not require the use of flux, so the joint surface of the hot runner plate 110 and the cold runner plate 130 has no stress effect, and regardless of the material strength and corrosion resistance, it is the same as the raw material of the hot runner plate 110 and the cold runner plate 130. After the hot runner plate 110 and the cold runner plate 130 are combined by diffusion welding, they can be processed by machining, grinding, and/or heat treatment, so the subsequent processing is quite convenient.

Please also refer to FIG. 2, which is a schematic top view of the hot runner plate of the heat exchange unit of FIG. 1. The hot runner plate 110 may be a metal plate, such as a stainless steel plate. In some embodiments, the hot runner plate 110 may mainly include a body 112, at least one baffle, and several runners. In the example of FIG. 2, the hot runner plate 110 includes two baffles 114 a and 114 b and many runners 116 a, 116 b, and 116 c. The main body 112 has a plate-shaped structure. The baffles 114a and 114b are protruded from the main body 112, and can be formed integrally with the main body 112, for example. The baffles 114a and 114b both extend on the main body 112 along a direction 111, and three flow channel regions 118a, 118b, and 118c are formed on the main body 112. The direction 111 may be parallel to one side 112a of the main body 112, for example. When the hot runner plate 110 only has a single baffle, a two-runner area can be formed on the body 112. The size of the runner areas 118a, 118b, and 118c can be the same, or they can be designed to have different sizes according to usage requirements.

Any two adjacent flow channel regions 118a, 118b, and 118c are connected to each other. As shown in FIG. 2, the runner area 118a has an inlet branch 118ai and an outlet branch 118ao opposite to each other, the runner area 118b has an inlet branch 118bi and an outlet branch 118bo opposite to each other, and the runner area 118c has opposite Inlet runner 118ci and exit runner 118co. In the adjacent flow channel regions 118a and 118b, the flow channel region 118a is located upstream, and the flow channel region 118b is located downstream. The outlet branch passage 118ao of the upstream flow passage area 118a is connected to the inlet branch passage 118bi of the downstream flow passage area 118b, so that the flow passage areas 118a and 118b communicate with each other. In addition, the inlet branch channel 118ai of the flow channel area 118a and the outlet branch channel 118bo of the flow channel area 118b are separated by a baffle 114a. In addition, in the adjacent flow passage areas 118b and 118c, the flow passage area 118b is located upstream and the flow passage area 118c is located downstream. Similarly, the outlet branch passage 118bo of the upstream flow passage area 118b is connected to the inlet branch passage 118ci of the downstream flow passage area 118c, so that the flow passage areas 118b and 118c communicate with each other. The inlet branch passage 118bi of the flow passage area 118b and the outlet branch passage 118co of the flow passage area 118c are separated by a baffle 114b.

Please continue to refer to FIG. 2, the runners 116a, 116b, and 116c are respectively provided in the runner regions 118a, 118b, and 118c. The flow channels 116a, 116b, and 116c may be respectively arranged in the flow channel regions 118a, 118b, and 118c at a certain interval and extending along the direction 111. The two opposite ends of each flow channel 116a are respectively connected to the inlet flow channel 118ai and the outlet flow channel 118ao. The opposite ends of each flow channel 116b are respectively connected to the inlet branch flow channel 118bi and the outlet branch flow channel 118bo. The opposite ends of each flow channel 116c are respectively connected to the inlet flow channel 118ci and the outlet flow channel 118co.

As shown in FIG. 2, the hot runner plate 110 further has an inlet 120 and an outlet 122. The inlet 120 and the outlet 122 are respectively penetrated at two opposite corners 112b and 112c of the main body 112. The second working fluid 124 from the inlet 120 Enter the inlet branch 118ai of the flow channel area 118a, then branch from the inlet branch 118ai to all the flow channels 116a, and flow through the flow channel 116a to the outlet branch 118ao. The second working fluid 124 then flows out from the outlet branch passage 118ao of the flow passage area 118a to the inlet branch passage 118bi of the downstream flow passage area 118b. Similarly, the second working fluid 124 diverges from the inlet branch channel 118bi to all the flow channels 116b, flows through the flow channel 116b to the outlet branch channel 118bo, and then flows out from the outlet branch channel 118bo of the flow channel area 118b to the more The inlet branch channel 118ci of the downstream channel area 118c. The second working fluid 124 then diverges from the inlet branch channel 118ci to all the flow channels 116c, and flows into the outlet branch channel 118co through the flow channel 116c, and then flows out from the outlet branch channel 118co of the flow channel area 118c through the outlet 122. Heat deflector 110.

The main body 112 is divided into three flow channel regions 118a, 118b, and 118c by the baffles 114a and 114b, so that the second working fluid 124 can flow through the heat flow through the flow channels 116a, 116b, and 116c in a serpentine manner. The flow channel regions 118a, 118b, and 118c of the channel plate 110. In this way, the flow path and time of the second working fluid 124 in the hot runner plate 110 can be increased.

Please refer to FIG. 3, which is a schematic top view of the cold runner plate of the heat exchange unit of FIG. 1. The cold runner plate 130 may be a metal plate, such as a stainless steel plate. The material of the cold runner plate 130 and the hot runner plate 110 can be the same or different. The size of the cold runner plate 130 is preferably substantially the same as the size of the hot runner plate 110 to facilitate the superposition of the two. In some embodiments, the cold runner plate 130 may mainly include a body 132, at least one baffle, and several runners. In the picture In the example of 3, the structure of the cold runner plate 130 is a mirror image of the structure of the hot runner plate 110. The cold runner plate 130 also includes two baffles 134a and 134b and many runners 136a, 136b, and 136c. In addition, the main body 132 also has a plate-shaped structure. The baffles 134a and 134b are protruded from the main body 132, and can be formed integrally with the main body 132, for example. The baffles 134a and 134b extend on the body 132 along the direction 131 to form three flow channel regions 138a, 138b, and 138c on the body 132. The direction 131 may be parallel to one side 132a of the main body 132, for example. When the hot runner plate 110 is stacked on the first side 130a of the cold runner plate 130, the side 112a of the main body 112 can be aligned with the side 132a of the main body 132, so the direction 111 and the direction 131 are parallel. The positions and sizes of the runner regions 138a, 138b, and 138c may correspond to the runner regions 118a, 118b, and 118c, respectively. Therefore, the dimensions of the runner regions 138a, 138b, and 138c may be the same or different from each other.

As shown in FIG. 3, any two adjacent flow channel regions 138a, 138b, and 138c are connected to each other. The runner area 138a has an inlet and outlet runner 138ai and an outlet runner 138ao opposite to each other, the runner area 138b has an inlet runner 138bi and an outlet runner 138bo opposite to each other, and the runner area 138c has an entrance runner 138ci and an outlet opposite to each other. The shunt 138co. In the adjacent flow channel regions 138c and 138b, the flow channel region 138c is located upstream, and the flow channel region 138b is located downstream. The outlet branch passage 138co of the upstream flow passage area 138c is connected to the inlet branch passage 138bi of the downstream flow passage area 138b, so that the flow passage areas 138c and 138b communicate with each other. The inlet branch channel 138ai of the flow channel area 138a and the outlet branch channel 138bo of the flow channel area 138b are separated by a baffle 134a. In addition, adjacent to Among the flow passage areas 138b and 138a, the flow passage area 138b is located upstream, and the flow passage area 138a is located downstream. Similarly, the outlet branch channel 138bo of the flow channel area 138b located upstream is connected to the inlet branch channel 138ai of the flow channel area 138a located downstream, so that the flow channel areas 138b and 138a communicate with each other. The inlet branch channel 138bi of the flow channel area 138b and the outlet branch channel 138co of the flow channel area 138c are separated by a baffle 134b.

Please continue to refer to FIG. 3, the flow channels 136a, 136b, and 136c are respectively provided in the flow channel areas 138a, 138b, and 138c. The flow channels 136a, 136b, and 136c may be respectively arranged in the flow channel regions 138a, 138b, and 138c at a certain interval and extending along the direction 131. When the hot runner plate 110 is stacked on the first side 130a of the cold runner plate 130, the runners 136a, 136b, and 136c can be aligned with the runners 116a, 116b, and 116c, respectively. The opposite ends of each flow passage 136a, 136b, and 136c are respectively connected to the inlet branch passage 138ai and the outlet branch passage 138ao, the inlet branch passage 138bi and the outlet branch passage 138bo are connected, and the inlet branch passage 138ci and the outlet branch passage 138co are connected.

As shown in FIG. 3, the cold runner plate 130 further has an inlet 140 and an outlet 142. The inlet 140 and the outlet 142 are respectively penetrated at two opposite corners 132b and 132c of the main body 132. When the cold runner plate 130 is overlapped with the hot runner plate 110, the two opposite corners 132b and 132c of the main body 132 and the two opposite corners 112b and 112c of the main body 112 are staggered. The first working fluid 144 enters the inlet branch channel 138ci of the flow channel area 138c from the inlet 140, then branches from the inlet branch channel 138ci to all the flow channels 136c, and flows through the flow channel 136c to the outlet branch channel 138co. First working fluid 144 connections Then, it flows out from the outlet branch passage 138co of the flow passage area 138c to the inlet branch passage 138bi of the downstream flow passage area 138b. The first working fluid 144 diverges from the inlet branch passage 138bi to all the passages 136b, and flows into the outlet branch passage 138bo through the passage 136b, and then flows out from the exit branch passage 138bo of the flow passage area 138b to a stream further downstream The entrance of the channel area 138a is divided into the runner 138ai. The first working fluid 144 then diverges from the inlet branch passage 138ai to all the flow passages 136a, flows through the passage 136a to the outlet branch passage 138ao, and then flows out from the exit branch passage 138ao of the flow passage area 138a through the outlet 142. Cold deflector 130.

In the heat exchange unit 100, the flow directions of the first working fluid 144 in the flow channels 136a, 136b, and 136c of the cold runner plate 130 are aligned with the corresponding flow channels 116a, 116b of the second working fluid 124 in the hot runner plate 110. , Same as the flow direction in 116c. In some examples, the main body 132 of the cold runner plate 130 is adjacent to the inlet 140 or the main body 112 of the hot runner plate 110 is adjacent to the inlet 120. A flow direction adjustment mechanism can be provided, and the baffles 134a and 134b or the baffles 114a and 114b can be adjusted accordingly. To change the flow direction of the first working fluid 144 adjacent to the inlet 140 or the second working fluid 124 adjacent to the inlet 120. Thereby, the flow directions of the first working fluid 144 in the flow passages 136a, 136b, and 136c of the cold runner plate 130 are aligned with the corresponding flow passages 116a, 116b, and 116c of the second working fluid 124 in the hot runner plate 110. The direction of the flow in the reactor is reversed, and the heat exchange efficiency between the first working fluid 144 and the second working fluid 124 can be further improved.

The cold runner plate 130 also uses baffles 134a and 134b to divide the body 132 into three runner regions 138a, 138b, and 138c. A working fluid 144 can sequentially flow through the runner regions 138c, 138b, and 138a of the hot runner plate 130 through the runners 136c, 136b, and 136a in a serpentine manner. Thereby, the flow path and time of the first working fluid 144 in the cold runner plate 130 can be increased. Therefore, the flow path and time of the first working fluid 144 and the second working fluid 124 in the cold runner plate 130 and the hot runner plate 110 are increased, so that the heat transfer efficiency between each other can be improved, and the heat exchange unit can be improved. Total heat transfer efficiency in 100.

In some examples, the heat exchange unit may include two hot runner plates 110 and one cold runner plate 130. The two hot runner plates 110 can be respectively stacked on the first side 130a and the second side 130b of the cold runner plate 130, and the cold runner plate 130 is sandwiched therebetween.

The heat exchange unit of the present invention can be combined with a heat storage unit, and can be applied to heat energy exchange in different fields, as well as heat energy storage, heat supply, and regulation. Please refer to FIG. 4, which is a schematic front view of a heat exchange and heat storage system according to an embodiment of the present invention. The heat exchange heat storage system 200 of this embodiment may mainly include at least one heat exchange unit 150 and at least one heat storage unit 190, wherein the heat exchange unit 150 and the heat storage unit 190 overlap each other. In some examples, the number of the heat exchange unit 150 is the same as the number of the heat storage unit 190, and the heat exchange unit 150 and the heat storage unit 190 overlap each other in a staggered manner. In some examples, the number of heat exchange units 150 may be more than that of heat storage units 190. Alternatively, the number of heat exchange units 150 may be less than that of heat storage units 190, for example, two heat exchange units 150 are interleaved between three heat storage units 190.

In some examples, each heat exchange unit 150 may mainly include The first hot runner plate 110a, the second hot runner plate 110b, and the cold runner plate 130. The first hot runner plate 110a and the second hot runner plate 110b are respectively overlapped with the first side 130a and the second side 130b of the cold runner plate 130, and the cold runner plate 130 is sandwiched therebetween. The structure and design of the first hot runner plate 110a and the second hot runner plate 110b are the same as the structure and design of the hot runner plate 110 of the above embodiment, and the structure and design of the cold runner plate 130 are the same as the cold runner plate of the above embodiment The structure of 130 is the same as the design, so I won't repeat it here.

As shown in FIG. 4, the second hot runner plate 110 b of the heat exchange unit 150 is stacked on the heat storage unit 190. The joining of the second hot runner plate 110b of the heat exchange unit 150 and the heat storage unit 190 may, for example, use diffusion welding technology. Each heat storage unit 190 may mainly include a heat storage plate 170 and a phase change heat storage material 180. The material of the heat storage plate 170 may be metal, such as stainless steel. Please also refer to FIG. 5, which is a schematic top view of the heat storage unit 190 of the heat exchange heat storage system 200 of FIG. 4. The heat storage plate 170 includes a plurality of fins 172. These fins 172 may be arranged to extend parallel to each other, for example. For example, the fins 172 may be regularly arranged at a certain interval. In some specific examples, the spacing between the fins 172 is not all the same, that is, they are arranged irregularly. The combination of these fins 172 forms a plurality of heat storage grooves 174 on the heat storage plate 170. In an example where the fins 172 are arranged parallel to each other, the heat storage grooves 174 also extend parallel to each other. Each heat storage tank 174 may have an opening 174a. The second hot runner plate 110b of the heat exchange unit 150 overlaps the openings 174a of the heat storage tanks 174, and covers the openings 174a.

The phase change heat storage material 180 is filled in these heat storage tanks 174. Mutually The changeable heat storage material 180 may include a single phase change heat storage material, or may include more than two phase change heat storage materials. In this embodiment, the phase change heat storage material 180 can select the corresponding phase change heat storage material according to different application temperature ranges and/or different application environment characteristics. For example, the phase change heat storage material 180 may include paraffin, salt hydrate, and/or fatty acid. When the phase change heat storage material 180 is filled in the heat storage tank 174, an appropriate filling temperature can be selected according to the application temperature range and the expansion and contraction characteristics of the phase change heat storage material 180.

By arranging fins 172 on the heat storage plate 170 and filling the phase change heat storage material 180 in the heat storage tank 174 formed by the fins 172, the heat conduction area can be extended to the left and right sides of the phase change heat storage material 180 With the bottom side. In this way, the heat transfer efficiency of the phase change heat storage material 180 can be improved, and the heat absorption and heat release capabilities of the phase change heat storage material 180 can be improved. Therefore, when the heat source is intermittently supplied, the heat exchange heat storage system 200 can use the latent heat characteristics of the phase change heat storage material 180 to maintain the temperature of the entire system, thereby preventing the internal temperature of the system from rising or falling sharply. In addition, when there is a demand for heat exchange, the heat exchange heat storage system 200 can only supply heat through the phase change heat storage material 180 inside.

Hereinafter, an experimental result of an example is used to more specifically illustrate the technical content and effects of the implementation of the present invention, but it is not intended to limit the present invention.

Please refer to FIG. 6, which is a schematic diagram of the configuration of a heat exchange and heat storage system according to an embodiment of the present invention, and please also refer to FIG. 4. The heat exchange heat storage system 300 includes 9 heat exchange units superimposed on each other 150 and 8 heat storage units 190, wherein the heat storage unit 190 is inserted between any two adjacent heat exchange units 150. The heat exchange unit 150 and the heat storage unit 190 are welded and integrated through diffusion welding technology. In addition, when the phase change heat storage material 180 of the heat storage unit 190 (shown in FIG. 4) is in a liquid molten state at about 90°C, the heat storage tank 174 of the heat storage plate 170 of the heat storage unit 190 is filled and left to stand still. cool down. The filling amount of the phase change heat storage material 180 of each heat storage unit 190 is about 25 g, and the total filling weight of the heat exchange heat storage system 300 is about 200 g. The heat exchange heat storage system 300 may further include a cover plate 310 without a flow channel, wherein the cover plate 310 is arranged on the outermost heat exchange unit 150.

Please refer to FIGS. 7 to 9, which respectively show a schematic side view, a schematic perspective view, and a schematic top view of the heat exchange heat storage system of FIG. 6. The heat exchange and heat storage system 300 further includes a cold water inlet 320, a cold water outlet 322, a hot water inlet 330, and a hot water outlet 332, for cold water in and out and hot water in and out of the heat exchange and heat storage system 300, respectively. The heat exchange heat storage system 300 also includes four pipe sealing water caps 340 to respectively cover the inlet and the outlet of the non-designed flow path.

As shown in FIGS. 7-9, in order to measure the heat exchange rate of the heat exchange heat storage system 300 and the temperature distribution of the phase change heat storage material 180 of the heat storage unit 190 after heat exchange, a plurality of thermocouples 350a to 350a are provided Thermocouple 350d. These thermocouples 350a to 350d are adjacent to the inlet and outlet positions of the cold working fluid and the hot working fluid to measure the inlet and outlet positions of the cold working fluid and the hot working fluid and the three positions before, middle, and after the phase change heat storage material 180 temperature. The experimental conditions for the test are 85°C or 95°C hot water as the heat source, The cold source uses normal temperature tap water at 29°C, and the fluid supply flow ratio of hot water to cold water is 1:1 or 2.5:1. The test results of the heat exchange rate of the heat exchange heat storage system 300 under different experimental conditions are shown in Table 1 below.

The temperature distribution diagram of the phase change heat storage material 180 of the heat exchange heat storage system 300 after heat exchange is shown in FIG. 10. It can be seen from the experimental results of FIG. 10 that the temperature distribution of the phase change heat storage material 180 at different positions of the heat storage plate 170 is different, and the temperature of the phase change heat storage material 180 near the inlet and outlet of the cold and hot fluid is lower.

The temperature trends of the cold working fluid and the hot working fluid of the heat exchange and heat storage system 300 at the inlet and outlet temperatures of the heat exchange and heat storage system 300 are shown in FIG. 11. Curve 400 shows the temperature change of cold water entering the heat exchange and storage system 300, curve 402 shows the temperature change of cold water flowing out of the heat exchange and storage system 300, curve 404 shows the temperature change of hot water entering the heat exchange and storage system 300, and curve 406 It shows the temperature change of the hot water flowing out of the heat exchange heat storage system 300.

Please refer to FIGS. 12A and 12B at the same time, which respectively show the curves of the natural heat dissipation conditions of the phase change heat storage material of the heat exchange heat storage system of FIG. 6 Figure and a partial enlarged view of the graph of Figure 12A. FIG. 12B is an enlarged view of part 420 of FIG. 12A. Curve 410, curve 412, curve 414, and curve 416 respectively show the natural heat dissipation conditions of the 5th, 6th, 7th, and 8th layer of the phase change heat storage material 180 in the 8th layer of the heat storage unit 190, The cooling rate of the phase change heat storage material 180 is 10°C/hr. It can be seen from Fig. 12B that the temperature drop rate of the phase change heat storage material 180 becomes slower at about 65°C, and this temperature is the latent heat release point of the phase change material.

It can be seen from the above-mentioned embodiments that one of the advantages of the present invention is that the cold runner plate and the hot runner plate of the heat exchange unit of the present invention are both provided with baffles to form several runner regions, and each runner region is provided with Multiple runners. The serpentine flow channel design formed by the baffle can increase the heat exchange area and heat exchange time of the overall heat exchange unit.

As can be seen from the above-mentioned embodiments, another advantage of the present invention is that the heat storage plate of the heat storage unit of the heat exchange heat storage system of the present invention is provided with several fins, and the phase change heat storage material can be filled in these fins for storage. Several heat storage tanks formed on the hot plate. In this way, the heat conduction area of the phase change heat storage material can be greatly increased, and the phase change heat storage material can conduct heat more efficiently, thereby improving the heat absorption and heat release capabilities of the phase change heat storage material.

As can be seen from the above-mentioned embodiments, another advantage of the present invention is that between the cold runner plate and the hot runner plate of the heat exchange unit of the heat exchange heat storage system of the present invention, and between the heat exchange unit and the heat storage unit can be Adopt diffusion bonding technology to combine. Therefore, no flux is required, the joint surface between the two components has no stress effect, and the heat exchange heat storage system can perform machining, grinding, heat treatment and other processes after welding, so as to simplify the production process of the system Effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in this technical field can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

110: Hot runner plate

111: direction

112: body

112a: Edge

112b: corner

112c: corner

114a: baffle

114b: bezel

116a: runner

116b: runner

116c: runner

118a: runner area

118ai: Inlet runner

118ao: outlet shunt

118b: runner area

118bi: inlet shunt

118bo: Outlet shunt

118c: runner area

118ci: inlet manifold

118co: Outlet shunt

120: entrance

122: exit

124: second working fluid

Claims (10)

A heat exchange unit, including: A cold runner plate; and A hot runner plate stacked on a first side of the cold runner plate, Each of the cold runner plate and the hot runner plate includes: An ontology At least one baffle extending on the main body in one direction to form at least two flow passage areas on the main body, wherein any two adjacent flow passage areas are communicated with each other; and A plurality of flow channels extend in the flow channel areas along this direction, Wherein the runners of the cold runner plate are aligned with the runners of the hot runner plate; One of the first working fluid passes through the flow channels of the cold runner plate and sequentially flows through the flow channel regions of the cold runner plate, and a second working fluid passes through the flow channels of the hot runner plate And flow through the runner areas of the hot runner plate in sequence. The heat exchange unit according to claim 1, wherein each of the flow passage areas has an inlet branch passage and an outlet branch passage opposite to each other, and the outlet branch of the upstream of one of the adjacent flow passage areas The channel is connected with the inlet branch channel of a downstream. The heat exchange unit according to claim 1, wherein the dimensions of the flow channel regions of the cold runner plate are different. The heat exchange unit according to claim 1, wherein the flow direction of the first working fluid in one of the flow channels of the cold runner plate and the flow direction of the second working fluid in the flow channels of the hot runner plate It is aligned with the flow direction of the flow channels of the cold runner plate in the same or reverse direction. The heat exchange unit according to claim 1, further comprising another hot runner plate stacked on a second side of the cold runner plate, wherein the second side of the cold runner plate is opposite to the first side. A heat exchange heat storage system, including: At least one heat exchange unit includes a first hot runner plate, a second hot runner plate, and a cold runner plate sandwiched between the first hot runner plate and the second hot runner plate, wherein each of the first hot runner plates A hot runner plate, the second hot runner plate, and the cold runner plate include at least two runner regions, and any two adjacent runner regions communicate with each other, and each of the runner regions is arranged along a direction Extending a plurality of flow channels, wherein a first working fluid flows through the flow channels of the cold runner plate sequentially through the flow channel regions of the cold runner plate, and a second working fluid flows through each of the flow channels of the cold runner plate. The runners of the first hot runner plate and the second hot runner plate sequentially flow through the runner regions of the first hot runner plate and the second hot runner plate; and At least one heat storage unit is overlapped with the first hot runner plate, wherein the at least one heat storage unit includes: A heat storage plate includes a plurality of fins, and the fins form a plurality of storage Heat sink; and A phase change heat storage material is filled in the heat storage tanks. The heat exchange heat storage system according to claim 6, wherein the phase change heat storage material comprises paraffin, salt hydrate, fatty acid, or any combination thereof. The heat exchange heat storage system according to claim 6, wherein the flow channels of the first hot runner plate and the flow channels of the second hot runner plate are aligned with the flow channels of the cold runner plate. The heat exchange heat storage system according to claim 8, wherein the flow direction of the first working fluid in one of the flow channels of the cold runner plate is the same as that of the second working fluid in each of the first hot runner plates The flow direction of the flow channels of the cold runner plate is the same as or opposite to the alignment of the flow channels of the first hot runner plate. The heat exchange heat storage system according to claim 6, wherein each of the first hot runner plate, the second hot runner plate, and the cold runner plate includes: An ontology; and At least one baffle extends on the body along a direction to form the flow channel areas on the body.

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