WO2019137324A1

WO2019137324A1 - Heat exchange device for conserving energy of water heater

Info

Publication number: WO2019137324A1
Application number: PCT/CN2019/070593
Authority: WO
Inventors: 蔡应麟; 徐兆火
Original assignee: 蔡应麟; 徐兆火
Priority date: 2018-01-10
Filing date: 2019-01-07
Publication date: 2019-07-18
Also published as: CN110017718A; GB202010434D0; GB2583308A; GB2583308B

Abstract

A heat exchange device for conserving energy of a water heater comprises an upper cover (10), a heat exchange plate module (30), a heat exchange tube module (40), and a base (20). A top surface (11) of the upper cover (10) is provided with a water inlet (14), and a water outlet is arranged near a bottom surface of the base (20). The heat exchange plate module (30) is arranged below the water inlet (14) of the upper cover (10), and is connected to the heat exchange tube module (40) to form a sealed communicating water passage, and the two modules are arranged at an inner portion of the base (20). Hot shower water flowing through the water inlet (14) of the upper cover (10) first makes contact with the heat exchange plate module (30), such that room-temperature water therein is preheated by the heat exchange tube module (40) and absorbs maximum heat by means of heat exchange before being guided to the water inlet of a water heater (2), thereby greatly reducing energy consumed by the water heater.

Description

Thermal energy exchange device capable of saving water source energy

Technical field

The invention relates to a heat energy exchange device capable of greatly saving the energy of a shower water heater. The combination of a heat exchange plate module and a heat exchange tube module makes the waste heat recovery rate of the shower hot water reach 60%. In turn, the energy consumption required for heating the water heater is saved, and the environmental economic benefits of reducing carbon emissions of energy consumption are simultaneously achieved.

Background technique

In order to achieve the goal of energy saving and carbon reduction, many heat exchangers for home showers have been put on the market. The design principle is to direct the tap water at normal temperature into the heat exchanger and use the hot water after the shower as a heat exchanger. The heat source enables the normal temperature tap water flowing through the heat exchanger to be preheated into a tap water of a higher temperature, and then is diverted to the water inlet pipe of the water heater, thereby increasing the temperature of the water inlet of the water heater, thereby saving the heating of the water heater. Energy, and the inventor of this case has been working on the development of thermal energy exchange devices for shower hot water for more than 10 years, and the results of the research and development of the Chinese patent application are: authorized notice number CN100552361 (application date January 17, 2006), Publication No. CN101511242 (application date September 11, 2007), authorization notice number CN201364044 (application date February 25, 2009), authorization notice number CN201364045 (application date March 4, 2009), authorization notice number CN102478367 (application On November 24, 2010, and the application publication number CN105403075 (application date September 11, 2014), etc., the aforementioned patents can achieve their pre-existing functions after being invented by the inventors. The shortcoming is that the reaction is still saving room for the energy consumption of the water heater. The reason is that the above-mentioned heat exchange devices cannot improve the residual heat recovery rate of the hot water after showering, in other words, if By increasing the residual heat recovery rate of the hot water after showering, the water inlet temperature of the water heater can be increased. When the water inlet temperature of the water heater is increased, the amount of energy required to heat it to the desired outlet temperature (ie, gas consumption or electricity) The amount can be reduced, and the energy-saving effect of the energy source of the water heater can be achieved. Therefore, how to successfully reform the heat exchange device to further improve the residual heat recovery rate of the shower hot water is extremely important.

In addition, in the design of the heat exchange device that increases the residual heat recovery rate, it must also take into account that the cost of its manufacturing cannot be increased. Otherwise, even if the heat recovery rate is increased, the manufacturing cost of the thermal device increases. However, it is not conducive to promoting sales to consumers, and at the same time it is unable to achieve the environmental economic results of reducing the carbon consumption of energy consumption after the use of households.

Summary of the invention

The main object of the present invention is to provide a heat energy exchange device capable of saving energy of a water heater, comprising: an upper cover, being a flat body having a top surface, a bottom surface and a side surface, the top surface and the bottom surface The top surface is integrally connected by the side surface circle, wherein the top surface is provided with a downward concave surface, and a water inlet is arranged through the bottom surface at the lowest position of the concave surface, and a plurality of positioning positions are protruded at the edge of the bottom surface. a base, which is a groove body having the same area as the upper cover, has a top surface, a bottom surface and a side surface, the top surface is provided with an open groove, the bottom surface is provided with a closed surface, and is topped The side surface and the bottom surface are integrally connected by the side surface circle, wherein the edge of the top surface is concavely provided with a plurality of positioning holes, and the number and position of the positioning holes are equal to the number of positioning posts of the upper cover Corresponding to the position, after the positioning posts of the bottom surface of the upper cover are inserted, they are stacked one on another, and two mounting holes are formed on the side surfaces, and a drainage hole is arranged on the side surfaces near the bottom surface. Port; a heat exchange plate module made of metal a flat body disposed in the opening groove of the base and located below the water inlet of the upper cover, having a top surface, a bottom surface and a side surface, the side surface being between the top surface and the bottom surface The ring is integrally connected, and a closed receiving chamber is formed between the top surface, the bottom surface and the side surface, wherein the top surface is provided with a water inlet hole and a water outlet hole near the side surface surface, and is matched with The chamber is connected to the water outlet, and the water outlet hole is connected to an outlet pipe; a heat exchange tube module is a disk-shaped body which is bent and twisted by a long stainless steel tube and placed in the opening of the base. In the slot, the axial section of the stainless steel tube is wavy, and one of the end nozzles is disposed on one of the mounting holes on the side surface of the base, and the other end of the nozzle is connected to the top surface of the heat exchange plate module. The water inlet hole forms a closed communication water path with the accommodation chamber and the water outlet pipe of the heat exchange plate module; and a plurality of fixing frames, each of which is composed of a long fixing plate and a plurality of fixing clips Wherein the strip fixing plate is provided with a plurality of long holes arranged in parallel at regular intervals The fixing clip is bent by a long elastic metal piece, and forms a V-shaped clamping portion of the upper half and a ring holding portion of the lower half, and the ends of the V-shaped clamping portion are respectively convex. A protruding piece having a thickness and a width smaller than the elongated hole is provided.

The heat exchange plate module and the heat exchange tube module are soaked by the shower hot water in the open groove in the base, so that all the normal temperature water flowing through the stainless steel tube in sequence will be subjected to the first heat exchange of the shower hot water. And gradually warming up, and because the axial surface of the stainless steel tube is wavy, in addition to speeding up the heat exchange, when the normal temperature water gradually heated by the first heat exchange enters the accommodation chamber of the heat exchange plate module, Since the top surface of the heat exchange plate module is located just below the water inlet of the upper cover, the temperature of the shower hot water flowing into the water inlet is at the highest temperature, so that the heat exchange plate module is accommodated in the room. The normal temperature water that has been preheated for the first time can obtain the heat exchange effect of the highest temperature heat energy again, and once again raises the temperature into the final preheated warm water, and then flows into the water inlet pipe of the water heater through the water outlet pipe, thereby improving The water inlet temperature of the water heater, and also the amount of energy required to reduce the heating of the water heater to the temperature of the water to be discharged (ie, the amount of gas used or the amount of electricity used is reduced), and relatively reduce the use of the water heater. Efficacy amount. In other words, the present invention uses the heat exchange tube module to heat the shower hot water to the first immersion heat exchange of the normal temperature water, and then performs the second highest temperature thermal energy direct contact heat exchange via the exchange plate module. Under the action, the residual heat recovery rate of the shower hot water can be greatly increased to 60%.

Another object of the present invention is to provide a heat energy exchange device capable of saving energy of a water heater. Since the heat exchange tube module of the present invention uses a commercially available stainless steel wave tube, and the heat exchange plate module can select two metal plates. They are stacked on each other or die-cast by die-casting. The processing and manufacturing methods are all traditional processes, so the overall mass production cost is lower than the manufacturing cost of the prior art.

A further object of the present invention is to provide a heat energy exchange device capable of saving energy of a water heater, and the combination steps are as follows: First, the fingers of the two hands are respectively held by the fixed plates of the two sets of symmetrical holders. Easily lift the entire heat exchange plate module and the heat exchange tube module, and then insert the end pipe of the heat exchanger plate module and the end pipe of the heat exchange tube module into the two sides of the base. After assembling the holes and inserting them, the heat exchange plate module and the heat exchange tube module can be simultaneously placed into the opening grooves on the top surface of the base. Finally, the positioning posts on the bottom surface of the upper cover are respectively aligned. After the corresponding positioning holes on the top surface of the base, the upper cover and the base are superposed on each other and integrated, and the assembly of the present invention is completed; if it needs to be opened for cleaning after being used for a period of time, The reverse procedure allows the heat exchange plate module and the heat exchange tube module to be taken out of the base to perform the cleaning work, so that the operation is relatively easy.

DRAWINGS

Figure 1 is an exploded perspective view of the present invention.

2 is an exploded perspective view of the heat exchange tube module and the holder in the present invention.

Figure 3 is a cross-sectional view taken along line 3-3 of Figure 2.

Figure 4 is an exploded perspective view of the heat exchange plate module and its outlet pipe of the present invention.

Figure 5 is a cross-sectional view taken along line 5-5 of Figure 4.

Figure 6 is a cross-sectional view taken along line 6-6 of Figure 1.

Figure 7 is a perspective view showing the combination of the holder and the stainless steel tube in the present invention.

Figure 7-1 is a schematic cross-sectional view showing the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

7-2 is a second schematic cross-sectional view showing the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

7-3 is a third schematic cross-sectional view showing the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

7-4 is a fourth schematic cross-sectional view showing the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

7-5 is a fifth schematic cross-sectional view showing the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

7-6 are schematic cross-sectional views of the assembled assembly of the fixing frame and the stainless steel tube in the present invention.

Figure 8 is a perspective view showing the heat exchange plate module, the heat exchange tube module and the fixing frame placed in the base in the present invention.

Figure 9 is a perspective assembled view of the present invention.

Figure 10 is a perspective view of the present invention used in conjunction with a water heater.

Figure 11 is a cross-sectional view taken along line 11-11 of Figure 9.

Figure 12 is a cross-sectional view taken along line 12-12 of Figure 10.

Figure 13 is a cross-sectional view taken along line 13-13 of Figure 10.

Figure 14 is a perspective view of another embodiment of the base of the present invention.

Figure 15 is a perspective view of still another embodiment of the base of the present invention.

16 is a schematic view of a base of another embodiment of the heat exchange plate module and the heat exchange tube module of the present invention.

Figure 17 is a power consumption line diagram of the water heater of the present invention.

Figure 18 is a graph showing the energy saving rate of the residual heat recovery rate of the present invention.

Detailed ways

As shown in FIG. 1 to FIG. 7 , it is an embodiment of the thermal energy exchange device of the present invention that can save water source energy, and includes:

An upper cover 10 is a flat body having a top surface 11 , a bottom surface 12 and a side surface 13 . The top surface 11 and the bottom surface 12 are integrally connected by the side surface 13 , wherein The top surface 11 is provided with a downwardly concave surface, and a water inlet 14 is formed through the bottom surface 12 at the lowest position of the concave surface, and a plurality of positioning posts 15 are protruded at the edge of the bottom surface 12;

A base 20 is the same groove body as the upper cover 10, and has a top surface 21, a bottom surface 22 and a side surface 23. The top surface 21 is provided with an opening recess 24, and the bottom surface 22 is formed a plurality of positioning holes 25 are formed in the edge of the top surface 21, and the positioning holes 25 are defined by the side surface 23 The number and the position are corresponding to the number and position of the positioning posts 15 of the upper cover 10. After the positioning posts of the bottom surface of the upper cover 10 are inserted, they are superposed one upon another, and the two side faces 23 are provided with two The assembly hole 26, and the side surface 23 near the bottom surface 22 is further provided with a drain port 27;

a heat exchange plate module 30, a hollow flat body made of a metal material, and placed in the opening groove 24 of the base 20 and located below the water inlet 14 of the upper cover 10, having a top surface 31, a bottom surface 32 and a side surface 33. The top surface 31 and the bottom surface 32 are integrally connected by the side surface 33, and a closed surface is formed between the top surface 31, the bottom surface 32 and the side surface 33. The accommodating chamber 34 (shown in FIG. 5), wherein the top surface 31 is disposed near the side surface 33, and has a water inlet hole 35 and a water outlet hole 36, and communicates with the accommodating chamber 34. The water outlet hole 36 Then connected to an outlet pipe 37 (as shown in Figure 6);

A heat exchange tube module 40 is a disk-shaped body which is bent and wound by a long stainless steel tube 41 and placed in the opening groove 24 of the base 20. The axial section of the stainless steel tube 41 is It is wavy (as shown in FIG. 3), and one of the end nozzles 42 is disposed on one of the mounting holes 26 of the side surface 23 of the base 20, and the other end nozzle 43 is connected to the heat exchange plate module 30. The water inlet hole 35 of the top surface 31 forms a closed communication water path with the accommodation chamber 34 and the water outlet pipe 37 of the heat exchange plate module 30 (as shown in FIGS. 6 and 7);

Each of the fixing frames 50 is composed of a long fixing plate 51 and a plurality of fixing clips 52. The long fixing plate 51 is provided with a plurality of long holes arranged in parallel at regular intervals. 53 (shown in an enlarged view in the upper left position in FIG. 2), the fixing clip 52 is bent by a long elastic metal piece, and the V-shaped clamping portion 54 forming the upper half and the ring holding the lower half are held. A portion 55 (shown in an enlarged view of the lower right position in FIG. 2), and a convex piece 56 having a thickness and a width smaller than the elongated hole 53 is respectively protruded from both end sides of the V-shaped holding portion 54.

As shown in FIG. 7 and FIG. 7-1 to FIG. 7-6, the fixing manner of the stainless steel tube in the heat exchange tube module 40 by using the fixing frame 50 is to first fix the V-shaped clip of the fixing clip 52 in each fixing frame 50. The holding portion 54 is aligned with the outer diameter of the stainless steel tube 41 and abuts against each other (as shown in FIGS. 7-1 and 7-2), so that the annular grip portion 55 can cover the stainless steel tube 41. Hold it (as shown in Figure 7-3), and then, with two fingers, the two protruding pieces 56 of the V-shaped clamping portion 54 are brought together (as shown in Figure 7-4), and can be worn together. Outside the long hole 53 of the strip fixing plate 51, the two protruding pieces 56 which are pierced out are bent outward (as shown in FIG. 7-5), so that the stainless steel tubes 41 arranged at the same position can be arranged. It is neatly suspended and fixed on the long fixing plate 51 (as shown in Fig. 7 and Fig. 7-6).

As shown in FIG. 7 to FIG. 9 , the combining steps of the present invention are as follows: First, the pair of fingers of the two hands respectively hold the strip fixing plates 51 of one of the two symmetrical holders 50 (as shown in FIG. 7 ). The entire heat exchange plate module 30 and the heat exchange tube module 40 can be easily lifted by the imaginary line finger, and then the end pipe of the water outlet pipe 37 of the heat exchange plate module 30 and the heat exchange tube module 40 are After the end nozzles 42 are respectively inserted into the two mounting holes 26 on the side surface 23 of the base 20 and are passed out, the heat exchange plate module 30 and the heat exchange tube module 40 are simultaneously placed on the top of the base 20 In the opening groove 24 of the surface 21 (as shown in FIG. 8), finally, the positioning posts 15 on the bottom surface of the upper cover 10 are respectively aligned with the corresponding positioning holes 25 on the top surface 21 of the base 20, and then inserted. The upper cover 10 and the base 20 can be superposed on each other (as shown in FIG. 9), and the assembly of the present invention is completed. If it needs to be opened for cleaning after being used for a period of time, it is only necessary to follow the reverse procedure of the foregoing steps, that is, The heat exchange plate module 30 and the heat exchange tube module 40 can be taken out of the outside of the base 20 to perform cleaning work and operation. It can be fairly easy to reach.

As shown in FIG. 9 to FIG. 13 , it is a method for installing and using a heat energy exchange device capable of saving water source energy of the present invention, first placing it on the bathroom floor 1 , and then exposing the water pipe P and the heat exchange tube module 40 . The end nozzles 42 of the side surface 23 of the base 20 are connected. Finally, the water inlet pipe P1 of the water heater 2 is connected to the end port of the water outlet pipe 37 exposed on the side surface 23 of the base 20, and then the installation is completed (as shown in the figure). 10 and FIG. 11); when the showerer B stands on the top surface 11 of the upper cover 10 and starts to shower, the normal temperature water W1 of the water pipe P enters the stainless steel from one of the end nozzles 42 of the heat exchange tube module 40. In the tube 41, after the entire stainless steel tube 41 is filled, the normal temperature water W1 flows into the accommodating chamber 34 from the water inlet hole 35 of the heat exchange plate module 30 via the other end nozzle 43 to be filled. After the chamber 34, it will flow out from the water outlet hole 36 (as shown in FIG. 11), and then flow into the water inlet pipe P1 of the water heater 2 via the water outlet pipe 37 to be heated by the water heater 2 into a shower hot water W. Via the water outlet pipe P2 of the water heater 2 and sprayed from the shower head S (as shown in Figures 9 and 10), while the shower hot water W passes After the bather B body is used, it will sprinkle on the top surface 11 of the upper cover 10, and then flow into the opening groove 24 of the base 20 from the water inlet 14 of the top surface 11, and the hot water W fills the entire opening groove in the shower. After 24, it is discharged from the drain port 27 of the side surface 23 of the base 20 to the bathroom floor 1 (as indicated by the arrow in Fig. 11).

In the foregoing process, since the heat exchange plate module 30 and the heat exchange tube module 40 are immersed by the shower hot water W in the open recess 24 in the base 20 (as shown in FIG. 12), all of them sequentially flow through the stainless steel. The normal temperature water W1 in the tube 41 is gradually heated by the first heat exchange of the shower hot water W. Since the axial surface of the stainless steel tube 41 is wavy, the speed of heat exchange is accelerated (as shown in Fig. 13). The temperature of the normal temperature water W1 which is gradually heated by the first heat exchange is entered into the accommodating chamber 34 of the heat exchange plate module 30, and the top surface 31 of the heat exchange plate module 30 is located at the upper cover 10 Below the water inlet 14, the temperature of the shower hot water W that has just flowed in from the water inlet 14 is at the highest temperature, so that it has been preheated for the first time in the accommodation chamber 34 in the heat exchange plate module 30. The normal temperature water W1 can obtain the heat exchange effect of the highest temperature heat energy again, and once again raises the temperature into the final preheated warm water W2, and then flows into the water inlet pipe P1 of the water heater 2 through the water outlet pipe 37, thereby improving the water heater. 2 inlet water temperature, but also to reduce the heating of the water heater 2 to its desired water The amount of energy required (i.e., reduce the amount of electricity or gas consumption), and the opposite effect is attained food save the amount of energy used. In other words, in the present invention, the hot water exchange tube module 40 causes the shower hot water W to warm up by the first immersion heat exchange function of the normal temperature water W1 flowing through the inside thereof, and then performs the second via the heat exchange plate module 30. The highest temperature thermal energy of the second time is directly contacted by the heat exchange, so that the residual heat recovery rate of the shower hot water W can be greatly increased to 60%.

The inventor and his own company (Foshan Delta Electric Technology Co., Ltd.) employee Liang Chuangjia, on November 1, 2017, the residual heat recovery rate test of the present invention, the results are as follows [Table 1] waste heat energy saving rate test report, [Table 2] Collect 90 data test results, [Table 3] Water heater power consumption line chart and [Table 4] Residual heat recovery rate energy saving rate graph, wherein Table 1 uses commercially available diameter 11mm stainless steel wave Control the cost of the heat exchange tube module of the invention, and combine the heat exchange board module of 0.072 square meters to carry out the data collection test results of 90 times at intervals of 10 seconds (as shown in Table 2), and obtain the water heater The power consumption line chart (shown in Table 3) and the energy saving rate graph for the remaining heat recovery rate (as shown in Table 4).

[Table 1] Waste heat energy saving rate test report

[Table 2] Collect 90 data test results

Figure 17 of the specification is a power consumption line diagram of the water heater of the present invention, which is hereinafter referred to as [Table 3].

Figure 18 of the specification is a graph of the energy saving rate of the waste heat recovery rate of the present invention, which is referred to as [Table 4].

According to the test result of the serial number 80 (that is, the 13th minute and the 20th second) in Table 2, the energy saving rate can reach 60.05%, which is the goal that all the conventional shower hot water heat exchangers cannot achieve, and at the same time It has also been demonstrated that the efficacy of the present invention does provide a significant savings in the amount of heating energy used by the water heater.

Another embodiment of the base 20 of the present invention is as shown in FIG. 14 , wherein a baffle 28 is further protruded on the bottom surface of the slot of the opening groove 24 of the base 20 adjacent to the drain port 27, which has a baffle 28 The function of allowing the shower hot water W to stay in the opening recess 24 for a longer period of time and then discharging the outside of the base 20 by the drain port 27, so that the residual temperature of the shower hot water W after the heat exchange is sufficiently utilized Discharge again.

As shown in FIG. 15 and FIG. 16 , it is a further embodiment of the base 20 of the present invention. The bottom surface of the opening groove 24 of the base 20 is circumferentially arranged with a surrounding baffle 29 (see FIG. 15 ). As shown, the stainless steel tube 41 coiled in the heat exchange tube module 40 can be placed (as shown in FIG. 16), and has a function of guiding and retarding the shower hot water W entering the opening recess 24. Further, the remaining temperature after the shower hot water W is subjected to heat exchange can be sufficiently utilized and then discharged to the outside of the base 20.

Claims

A heat energy exchange device capable of saving energy of a water heater, characterized in that:

An upper cover is a flat body having a top surface, a bottom surface and a side surface, wherein the top surface and the bottom surface are integrally connected by the side surface circle, wherein the top surface is provided downwardly a concave surface, and a water inlet is arranged through the bottom surface at the lowest position of the concave surface, and a plurality of positioning columns are protruded at the edge of the bottom surface;

a base, which is a groove body having the same area as the upper cover, has a top surface, a bottom surface and a side surface, the top surface is provided with an open groove, the bottom surface is provided with a closed surface, and the top surface is The bottom surface is integrally connected by the side surface circle, wherein a plurality of positioning holes are recessed in the edge of the top surface, and the number and position of the positioning holes are the same as the number and position of the positioning pillars of the upper cover Correspondingly, after the positioning posts of the bottom surface of the upper cover are inserted, they are stacked one on another, and two mounting holes are formed on the side surfaces, and a drain hole is arranged on the side surface near the bottom surface;

a heat exchange plate module, a hollow flat body made of metal material, placed in the open groove of the base and located below the water inlet of the upper cover, having a top surface, a bottom surface and a side surface The top surface and the bottom surface are integrally connected by the side surface ring, and a closed receiving chamber is formed between the top surface, the bottom surface and the side surface, wherein the top surface is adjacent to the side surface Wearing a water inlet hole and a water outlet hole, and communicating with the accommodation chamber, the water outlet hole is connected with an outlet pipe;

a heat exchange tube module, wherein a long strip of stainless steel tube is bent and wound into a disc-shaped body, and is placed in an open groove of the base, the axial section of the stainless steel tube is wavy, and wherein One end nozzle is placed on one of the mounting holes on the side surface of the base, and the other end nozzle is connected to the water inlet hole on the top surface of the heat exchange plate module, so that it is accommodated with the heat exchange plate module And the outlet pipe forms a closed communication channel.
The heat energy exchange device for saving energy of a water heater according to claim 1, further comprising a plurality of fixing frames, each of which is composed of a long fixing plate and a plurality of fixing clips, wherein The strip fixing plate is provided with a plurality of long holes arranged in parallel at a fixed interval, and the fixing clip is bent by a long elastic metal piece to form a V-shaped clamping portion and a lower half circle of the upper half. And a protruding piece having a thickness and a width smaller than the elongated hole, respectively, is protruded from the end portions of the V-shaped clamping portion.
A heat energy exchange device capable of saving energy of a water heater according to claim 1, wherein a bottom baffle is further protruded from a bottom surface of the opening groove groove of the base near the drain port.
A heat energy exchange device capable of saving energy of a water heater according to claim 1, wherein a bottom of the open groove groove of the base is arranged with a surrounding baffle.