Heat exchanger and hot water equipment

Abstract

The present invention discloses a heat exchanger and a water heating device, which allows water to be introduced into a first water inlet so that the water flows into a second water cavity. Since the ventilation channel is connected to the combustion cavity when the heat exchange plate is assembled into the heat exchange shell, the hot air in the combustion cavity will enter the ventilation channel and exchange heat with the water in the second water cavity, thereby increasing the water temperature. The heated water flows from the second water cavity into the first water outlet and is output from the first water outlet to complete the supply of hot water. Since the heat exchange shell is also provided with a first water cavity, and the first water cavity is distributed circumferentially around the combustion cavity, when water enters the second water cavity, it will also enter the first water cavity. The water after entering will absorb a large amount of heat from the heat exchange shell, which effectively reduces the surface temperature of the water heater device and ensures the safe use of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of water heating equipment, in particular to a heat exchanger and water heating equipment. Background Art

[0002] With improved living standards, water heating appliances, such as gas water heaters and gas-fired hot water boilers, are becoming increasingly common in everyday life. Most water heating appliances utilize finned tube heat exchangers. During the heating process, a burner heats the water pipes to raise the water temperature within them. However, this heating also heats the shell, causing the surface temperature to rise, seriously impacting the safety of the water heater. This also results in significant heat loss, reducing the heat utilization efficiency of the water heater. Summary of the Invention

[0003] Based on this, the first technical problem solved by the present invention is to provide a heat exchanger to reduce the surface temperature of the equipment and ensure the safe use of the equipment. At the same time, it is also beneficial to improve the heat utilization rate of the equipment.

[0004] The second technical problem solved by the present invention is to provide a hot water device that reduces the surface temperature of the device and ensures the safe use of the device. At the same time, it is also beneficial to improve the heat utilization rate of the device.

[0005] The technical solution is as follows:

[0006] The first technical problem mentioned above is solved by the following technical solution:

[0007] A heat exchanger comprises: a heat exchange shell, in which a combustion chamber and a heat exchange chamber are formed, the heat exchange shell is provided with a first water inlet, a first water chamber and a first water outlet which are connected in sequence by water paths, the first water chamber is at least partially arranged around the periphery of the combustion chamber; and a heat exchange plate group, the heat exchange plate group is at least partially located in the heat exchange chamber, the heat exchange plate group is provided with a ventilation channel and a second water chamber, the ventilation channel is connected to the combustion chamber, and the first water inlet, the second water chamber and the first water outlet are connected in sequence by water paths.

[0008] The heat exchanger described in the present invention has the following beneficial effects compared to the prior art: water is introduced into the first water inlet, causing it to flow into the second water chamber. Since the ventilation channel is connected to the combustion chamber when the heat exchange plate assembly is installed in the heat exchange shell, hot air in the combustion chamber enters the ventilation channel and exchanges heat with the water in the second water chamber, increasing the water temperature. The heated water flows from the second water chamber into the first water outlet and is then output from the first water outlet, completing the hot water supply. Furthermore, since the heat exchange shell is also provided with a first water chamber, which is circumferentially distributed around the combustion chamber, water enters the first water chamber simultaneously with the second water chamber. The water then absorbs a large amount of heat from the heat exchange shell, effectively reducing the surface temperature of the water heater and ensuring safe use of the equipment. Simultaneously, the absorbed water flows from the first water chamber into the first water outlet and is then output from the first water outlet for use by the user. This significantly improves the utilization rate of thermal energy, facilitating energy conservation and consumption reduction for the equipment and ensuring the water output rate of the equipment. In addition, this solution sets the combustion chamber inside the heat exchange shell. On the one hand, there is no need to set up an additional independent combustion chamber, which reduces the parts of the hot water equipment and improves assembly efficiency; on the other hand, there is no need to consider the airtightness of the connection between the burner and the heat exchanger, which improves the safety and reliability of the hot water equipment.

[0009] The principle and effect of the present invention are further explained below in conjunction with the above scheme:

[0010] In one embodiment, the first water chamber includes a heat exchange portion and a temperature reduction portion that are connected to each other. The heat exchange portion is located at the periphery of the heat exchange chamber, and the temperature reduction portion is located at the periphery of the combustion chamber.

[0011] In one embodiment, the heat exchange section includes a first water inlet section and a first water outlet section, the first water inlet section is connected to the first water inlet, and the first water outlet section is connected to the first water outlet, and the cooling section includes a first surrounding section, a connecting section and a second surrounding section, and the first water inlet section, the first surrounding section, the connecting section, the second surrounding section and the first water outlet section are connected in sequence.

[0012] In one embodiment, the heat exchange shell includes a first shell and a second shell that are compatible with each other, the first water cavity is divided into a first water partition cavity and a second water partition cavity, and the first water partition cavity and the second water partition cavity both include the heat exchange part and the cooling part, the first shell is provided with the first water inlet, the first water partition cavity and the first water outlet connected in sequence by water paths, the second shell is provided with the second water partition cavity, and the second water partition cavity is also connected to the first water inlet and the first water outlet respectively.

[0013] In one embodiment, the first shell includes a first outer shell and a first inner shell. The first inner shell is disposed on the first outer shell, and the first inner shell and the first outer shell together form the first water separation cavity.

[0014] In one embodiment, the second shell includes a second outer shell and a second inner shell. The second inner shell is disposed on the second outer shell, and the second inner shell and the second outer shell together form the second water separation cavity.

[0015] In one embodiment, a first water inlet pipe connected to the first water inlet and a first water outlet pipe connected to the first water outlet are provided on the first shell, a first opening is provided in the first water inlet pipe, a second opening is provided in the first water outlet pipe, and both the first opening and the second opening are connected to the first water separation cavity.

[0016] In one embodiment, a first enclosure and a second enclosure are further provided on the first shell, wherein the first enclosure surrounds the first water inlet pipe, and the second enclosure surrounds the first water outlet pipe.

[0017] In one embodiment, the second shell is provided with a second water inlet pipe connected to the first water inlet and a second water outlet pipe connected to the first water outlet, a third opening is provided in the second water inlet pipe, and a fourth opening is provided in the second water outlet pipe, and the third opening and the fourth opening are both connected to the second water separation cavity.

[0018] In one embodiment, the second water chamber includes a second water inlet section, a cooling section, a third water separation chamber and a second water outlet section connected in sequence by water channels, the cooling section is located on a side of the heat exchange plate group close to the combustion chamber, the second water inlet section is connected to the first water inlet, and the second water outlet section is connected to the first water outlet.

[0019] In one embodiment, the heat exchange plate group includes more than two heat exchange plates, a water inlet structure and a water outlet structure. The more than two heat exchange plates are arranged in an interval and stacked manner, and the ventilation channel is formed between two adjacent heat exchange plates. The second water cavity is arranged on the heat exchange plate. The water inlet structure is provided with the water inlet channel and two or more second water inlets. The water inlet channel is connected to each second water cavity through the corresponding second water inlets. The water outlet structure is provided with the water outlet channel and two or more second water outlets. The water outlet channel is connected to each second water cavity through the corresponding second water outlet.

[0020] The second technical problem mentioned above is solved by the following technical solution:

[0021] A water heating device comprises the heat exchanger described in any one of the above.

[0022] The water heater of the present invention offers advantages over the prior art. Using the aforementioned heat exchanger, water is introduced into the first water inlet, causing it to flow into the second water chamber. Since the heat exchange plate assembly is installed within the heat exchange shell, the ventilation channel communicates with the combustion chamber. Therefore, hot air within the combustion chamber enters the ventilation channel and exchanges heat with the water within the second water chamber, raising the water temperature. The heated water then flows from the second water chamber into the first water outlet and is discharged from the first outlet, completing the hot water supply. Furthermore, since the heat exchange shell also includes a first water chamber, which is circumferentially distributed around the combustion chamber, water entering the second water chamber also enters the first water chamber. This water absorbs a significant amount of heat from the heat exchange shell, effectively lowering the surface temperature of the water heater and ensuring safe operation. Simultaneously, the absorbed water flows from the first water chamber into the first water outlet and is discharged from the first outlet for use by the user. This significantly improves thermal energy utilization, facilitating energy conservation and consumption reduction for the device, while also ensuring the device's water output rate. In addition, this solution sets the combustion chamber inside the heat exchange shell. On the one hand, there is no need to set up an additional independent combustion chamber, which reduces the parts of the hot water equipment and improves assembly efficiency; on the other hand, there is no need to consider the airtightness of the connection between the burner and the heat exchanger, which improves the safety and reliability of the hot water equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a perspective view of a heat exchanger structure according to an embodiment of the present invention;

[0024] Figure 2 This is another perspective view of the heat exchanger structure according to one embodiment of the present invention;

[0025] Figure 3 This is an exploded schematic diagram of a heat exchanger structure according to an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of the structure at the center circle A;

[0027] Figure 5 This is a schematic diagram of the inner structure of the first shell according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the inner structure of the second shell according to an embodiment of the present invention;

[0029] Figure 7 This is a perspective view of a heat exchange plate structure according to an embodiment of the present invention;

[0030] Figure 8 This is another perspective view of the heat exchange plate structure according to one embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 100, heat exchange plate group, 110, heat exchange plate, 111, ventilation channel, 112, second water cavity, 1121, second water inlet section, 1122, second water outlet section, 1123, third water separation cavity, 1124, cooling section, 113, second flow blocking groove, 114, first connecting plate, 115, second connecting plate, 120, water inlet structure, 121, water inlet channel, 122, second water inlet, 123, first pressure relief port, 124, third inlet Water pipe, 130, water outlet structure, 131, water outlet channel, 132, second water outlet, 133, second pressure relief port, 134, third water outlet pipe, 140, support protrusion, 150, fifth enclosure, 151, first pressure relief channel, 160, sixth enclosure, 161, second pressure relief channel, 200, heat exchange shell, 210, combustion chamber, 220, first shell, 221, first outer shell, 222, first inner shell, 223, first water inlet pipe, 2231, first opening, 224, first water outlet pipe, 2241, second opening, 225, first enclosure, 226, second enclosure, 227, first flow blocking groove, 228, mounting hole, 229, observation hole, 230, second shell, 231, second outer shell, 232, second inner shell, 233, second water inlet pipe, 2331, third opening, 234, second water outlet pipe, 2341, fourth opening, 235, third enclosure, 236 , fourth enclosure, 240, first water inlet, 250, first water outlet, 260, first fixing member, 270, second fixing member, 280, first water cavity, 281, heat exchange part, 2811, first water inlet section, 2812, first water outlet section, 282, cooling part, 2821, first enclosing section, 2822, connecting section, 2823, second enclosing section, 283, first water dividing cavity, 284, second water dividing cavity, 290, heat exchange cavity. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not limit the scope of protection of the present invention.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0037] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 A heat exchanger includes a heat exchange plate assembly 100 and a heat exchange shell 200. A combustion chamber 210 and a heat exchange chamber 290 are formed within the heat exchange shell 200. The heat exchange shell 200 is provided with a first water inlet 240, a first water chamber 280, and a first water outlet 250, which are sequentially connected by waterways. The first water chamber 280 is at least partially disposed around the periphery of the combustion chamber 210. The heat exchange plate assembly 100 is at least partially located within the heat exchange chamber 290. A ventilation channel 111 and a second water chamber 112 are provided on the heat exchange plate assembly 100. The ventilation channel 111 is connected to the combustion chamber 210, and the first water inlet 240, the second water chamber 112, and the first water outlet 250 are sequentially connected by waterways.

[0038] The above-mentioned heat exchanger passes water into the first water inlet 240, so that the water flows into the second water chamber 112. Since the ventilation channel 111 is connected to the combustion chamber 210 when the heat exchange plate group 100 is installed in the heat exchange shell 200, the hot air in the combustion chamber 210 will enter the ventilation channel 111 and exchange heat with the water in the second water chamber 112, so that the water temperature increases. The heated water flows from the second water chamber 112 into the first water outlet 250 and is output from the first water outlet 250 to complete the supply of hot water. Since the heat exchange shell 200 is also provided with a first water chamber 280, and the first water chamber 280 is distributed circumferentially around the combustion chamber 210, when the water enters the second water chamber 112, it will also enter the first water chamber 280. The water after entering will absorb a large amount of heat from the heat exchange shell 200, so that the surface temperature of the water heater equipment is effectively reduced, ensuring the safe use of the equipment. At the same time, the absorbed water flows from the first water chamber 280 into the first water outlet 250 and is output from the first water outlet 250 for use by the user. This greatly improves the utilization rate of thermal energy, which helps the device achieve energy conservation and consumption reduction. It also helps ensure the water output rate of the device. In addition, this embodiment disposes the combustion chamber 210 within the heat exchange shell 200. On the one hand, it does not require the installation of an additional independent combustion chamber, which reduces the number of parts of the water heater and improves assembly efficiency. On the other hand, it does not need to consider the airtightness of the connection between the burner and the heat exchanger, which improves the safety and reliability of the water heater.

[0039] It should be noted that the phrase "the first water chamber 280 is at least partially disposed around the periphery of the combustion chamber 210" should be understood as meaning that the first water chamber 280 is partially disposed around the periphery of the combustion chamber 210, while a portion extends out of the combustion chamber 210 and to the periphery of the heat exchange chamber 290. Furthermore, there are two ways to dispose the first water chamber 280 around the periphery of the combustion chamber 210: 1. The first water chamber 280 is a single interconnected space on the heat exchanger that surrounds the combustion chamber 210; 2. The first water chamber 280 is divided into two or more unconnected spaces on the heat exchanger that, when combined, surround the combustion chamber 210.

[0040] It should also be noted that the combustion chamber 210 can be formed in the heat exchange shell 200 in the following ways: the heat exchange shell 200 is an integrated structure, and the cavity processing is performed in the heat exchange shell 200, so that the combustion chamber 210 is the hollow part of the heat exchange shell 200; or, the heat exchange shell 200 is formed by splicing and welding several side panels together, and the combustion chamber 210 is a space formed by the several side panels.

[0041] Furthermore, the first water chamber 280 includes a heat exchange portion 281 and a cooling portion 282 that are interconnected. The heat exchange portion 281 is located on the periphery of the heat exchange chamber 290. The cooling portion 282 is located on the periphery of the combustion chamber 210. As can be seen, when water enters the first water chamber 280 from the first water inlet 240, the water will flow between the heat exchange portion 281 and the cooling portion 282. At this time, the water flowing into the heat exchange portion 281 surrounds the periphery of the heat exchange chamber 290 and exchanges heat with the high-temperature flue gas in the heat exchange chamber 290; while the water flowing into the cooling portion 282 surrounds the periphery of the combustion chamber 210 and exchanges heat with the outer shell of the heat exchanger, thereby reducing the shell temperature of the heat exchanger. In this way, this embodiment divides the first water chamber 280 into different parts, so that the inflowing water can achieve different functions.

[0042] It should be noted that there may be various communication relationships between the first water inlet 240, the heat exchange portion 281, the cooling portion 282, and the first water outlet 250. In this embodiment, it is only necessary to ensure that the water paths of the first water inlet 240, the first water cavity 280, and the first water outlet 250 are sequentially connected. For example, the first water inlet 240, the heat exchange portion 281, the cooling portion 282, and the first water outlet 250 are sequentially connected; or the first water inlet 240, the cooling portion 282, the heat exchange portion 281, and the first water outlet 250 are sequentially connected; or, the first water inlet 240 and the first water outlet 250 are both connected to the cooling portion 282, and the heat exchange portion 281 is connected to the cooling portion 282 in a U-shaped reflux; or, the first water inlet 240 and the first water outlet 250 are both connected to the heat exchange portion 281, and the cooling portion 282 is connected to the heat exchange portion 281 in a U-shaped reflux.

[0043] Specifically, the first water inlet 240 and the first water outlet 250 are both connected to the heat exchange portion 281, and the cooling portion 282 is U-shaped or approximately U-shaped and is connected to the heat exchange portion 281. This prevents the inlet and outlet pipes from being directly connected to the corresponding positions of the cooling portion 282, which may cause the inlet and outlet pipes to burst due to high temperatures.

[0044] For further information, please refer to Figure 5 and Figure 6 The heat exchange section 281 includes a first water inlet section 2811 and a first water outlet section 2812. The first water inlet section 2811 is connected to the first water inlet 240. The first water outlet section 2812 is connected to the first water outlet 250. The cooling section 282 includes a first surrounding section 2821, a connecting section 2822, and a second surrounding section 2823. The first water inlet section 2811, the first surrounding section 2821, the connecting section 2822, the second surrounding section 2823, and the first water outlet section 2812 are connected in sequence. In this way, this embodiment designs the first water chamber 280 into multiple spaces, effectively extending the flow path within the first water chamber 280 and increasing the residence time of water in the first water chamber 280.

[0045] Specifically, please refer to Figure 5 The first water inlet section 2811 and the first water outlet section 2812 are arranged in parallel and spaced apart, and the first enclosing section 2821 and the second enclosing section 2823 are respectively located on opposite sides of the combustion chamber 210. Furthermore, the first enclosing section 2821 and the second enclosing section 2823 are both arranged at an angle relative to the connecting section 2822. In actual manufacturing, the angles of the first enclosing section 2821 and the second enclosing section 2823 with the connecting section 2822 are 90° or approximately 90°.

[0046] In one embodiment, please refer to Figure 5 The heat exchange shell 200 is provided with a first flow-blocking groove 227, the sidewall of which extends into the heat exchange portion 281 or the cooling portion 282. It can be seen that the first flow-blocking groove 227 is recessed into the heat exchange portion 281 or the cooling portion 282 on the heat exchange shell 200 to form the first flow-blocking groove 227. The sidewall of the first flow-blocking groove 227 extending into the heat exchange portion 281 or the cooling portion 282 forms a flow-blocking structure, which changes the flow path of water in the heat exchange portion 281 or the cooling portion 282, prolongs the residence time of water in the heat exchange portion 281 or the cooling portion 282, and ensures sufficient time for heat transfer between the water and the hot gas. This is beneficial for improving the heat utilization rate of the hydrothermal equipment.

[0047] In one embodiment, please refer to Figure 3 The heat exchange shell 200 includes a first shell 220 and a second shell 230 that are compatible with each other. The first water cavity 280 is divided into a first water compartment 283 and a second water compartment 284, and the first water compartment 283 and the second water compartment 284 both include a heat exchange portion 281 and a cooling portion 282. The first shell 220 is provided with a first water inlet 240, a first water compartment 283 and a first water outlet 250 that are connected in sequence by a water path. The second shell 230 is provided with a second water compartment 284, and the second water compartment 284 is also connected to the first water inlet 240 and the first water outlet 250 respectively.

[0048] It should be noted that the heat exchange shell 200 may also be an integrated shell structure in other embodiments.

[0049] Furthermore, the heat exchange plate assembly 100 is provided with a water inlet channel 121 and a water outlet channel 131, both of which are connected to the second water chamber 112. The second water compartment 284 is connected to the first water inlet 240 via the water inlet channel 121, and is connected to the first water outlet 250 via the water outlet channel 131. Thus, it can be seen that the first water chamber 280 of this embodiment is divided into two non-connected spaces: the first water compartment 283 and the second water compartment 284. The combination of the first water compartment 283 and the second water compartment 284 surrounds the combustion chamber 210, allowing the heat applied by the burner to the heat exchange shell 200 to be fully absorbed by the water in the first water chamber 280. At the same time, the second water compartment 284 is connected to the first water inlet 240 and the first water outlet 250 via the water inlet channel 121 and the water outlet channel 131, respectively, thereby ensuring that sufficient water flows into the second water compartment 284.

[0050] It should be noted that the adaptation of the first shell 220 and the second shell 230 should be understood as: the sizes of the first shell 220 and the second shell 230 match, that is, when the first shell 220 and the second shell 230 are combined, the first shell 220 and the second shell 230 can be installed in the heat exchange plate group 100, and form a combustion chamber 210 in front of the heat exchange plate group 100.

[0051] Optionally, the first shell 220 and the second shell 230 are matched in a clamping manner, a snap-fit manner, a bolt connection, welding or other manners.

[0052] Specifically, the heat exchange housing 200 also includes a first fixing member 260 and a second fixing member 270. The first fixing member 260 is mounted on one end of the first shell 220 and the second shell 230, while the second fixing member 270 is mounted on the other end of the first shell 220 and the second shell 230. The first shell 220, the second shell 230, the first fixing member 260, and the second fixing member 270 are all made of stainless steel. Furthermore, the first shell 220 and the second shell 230 have a concave structure.

[0053] For further information, please refer to Figure 5 The first housing 220 includes a first outer shell 221 and a first inner shell 222. The first inner shell 222 is disposed on the first outer shell 221, and the first inner shell 222 and the first outer shell 221 together form a first water separation cavity 283. Therefore, it can be seen that in the production of the first water separation cavity 283, a corresponding space is first produced on the first inner shell 222 or the first outer shell 221. After production, the first inner shell 222 is then connected to the first outer shell 221. In this way, the first water separation cavity 283 is formed.

[0054] Optionally, the first inner shell 222 is mounted on the first outer shell 221 by welding, bolting, riveting, etc.

[0055] In one embodiment, please refer to Figure 6 The second housing 230 includes a second outer shell 231 and a second inner shell 232. The second inner shell 232 is disposed on the second outer shell 231, and the second inner shell 232 and the second outer shell 231 together form a second water separation cavity 284. Therefore, in forming the second water separation cavity 284, a corresponding space is first formed on the second inner shell 232 or the second outer shell 231. After formation, the second inner shell 232 is then connected to the second outer shell 231. In this way, the second water separation cavity 284 is formed.

[0056] In one embodiment, please refer to Figure 5 and Figure 7 The first shell 220 is provided with a first water inlet pipe 223 connected to the first water inlet 240 and a first water outlet pipe 224 connected to the first water outlet 250. A first opening 2231 is provided in the first water inlet pipe 223. A second opening 2241 is provided in the first water outlet pipe 224. The first opening 2231 and the second opening 2241 are both connected to the first water separation cavity 283. In this way, through the first water inlet pipe 223, water can enter the first water separation cavity 283 and the second water cavity 112 respectively, ensuring the stable operation of the hot water equipment. At the same time, through the first water outlet pipe 224, the water in the first water separation cavity 283 and the second water cavity 112 is stably output, ensuring the stable water supply of the hot water equipment.

[0057] Specifically, the heat exchange plate assembly 100 is further provided with a water inlet channel 121 and a water outlet channel 131 both communicating with the second water chamber 112. The water inlet channel 121 communicates with the first water inlet 240 via a first water inlet pipe 223, and the water outlet channel 131 communicates with the first water outlet 250 via a first water outlet pipe 224.

[0058] Optionally, the first water inlet pipe 223 and the first water outlet pipe 224 are mounted on the first shell 220 by welding, threaded connection, integral molding, etc.

[0059] For further information, please refer to Figure 5 The first housing 220 is also provided with a first enclosing plate 225 and a second enclosing plate 226. The first enclosing plate 225 surrounds the first water inlet pipe 223. The second enclosing plate 226 surrounds the first water outlet pipe 224. Together, the first enclosing plate 225 and the second enclosing plate 226 form a protective structure for the first water inlet pipe 223 and the first water outlet pipe 224, respectively. This protective structure effectively prevents the first water inlet pipe 223 and the first water outlet pipe 224 from being directly exposed to heat and corroding.

[0060] Optionally, the first enclosure 225 and the second enclosure 226 are mounted on the first shell 220 by welding, threaded connection, integral molding, etc.

[0061] In one embodiment, please refer to Figure 6 and Figure 7 The second housing 230 is provided with a second water inlet pipe 233 communicating with the first water inlet 240 and a second water outlet pipe 234 communicating with the first water outlet 250. The second water inlet pipe 233 is provided with a third opening 2331, and the second water outlet pipe 234 is provided with a fourth opening 2341. Both the third opening 2331 and the fourth opening 2341 are in communication with the second water separation cavity 284. Thus, water stably enters the second water separation cavity 284 through the second water inlet pipe 233. At the same time, water in the second water separation cavity 284 is stably discharged through the second water outlet pipe 234.

[0062] Specifically, the heat exchange plate assembly 100 is further provided with a water inlet channel 121 and a water outlet channel 131 both communicating with the second water chamber 112. The second water inlet pipe 233 communicates with the first water inlet 240 through the water inlet channel 121, and the second water outlet pipe 234 communicates with the first water outlet 250 through the water outlet channel 131.

[0063] Optionally, the second water inlet pipe 233 and the second water outlet pipe 234 are mounted on the second shell 230 by welding, threaded connection, integral molding, etc.

[0064] For further information, please refer to Figure 6 The second housing 230 is also provided with a third enclosing plate 235 and a fourth enclosing plate 236. The third enclosing plate 235 surrounds the second water inlet pipe 233, while the fourth enclosing plate 236 surrounds the second water outlet pipe 234. Together, the third enclosing plate 235 and the fourth enclosing plate 236 form a protective structure for the second water inlet pipe 233 and the second water outlet pipe 234, respectively. This protective structure effectively prevents the second water inlet pipe 233 and the second water outlet pipe 234 from being directly exposed to heat and corroding.

[0065] Optionally, the third enclosure 235 and the fourth enclosure 236 are mounted on the second shell 230 by welding, threaded connection, integral molding, etc.

[0066] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4The heat exchange plate group 100 includes more than two heat exchange plates 110, a water inlet structure 120 and a water outlet structure 130. The more than two heat exchange plates 110 are arranged in an interval and stacked, and a ventilation channel 111 is formed between two adjacent heat exchange plates 110. The second water cavity 112 is provided on the heat exchange plate 110. The water inlet structure 120 is provided with a water inlet channel 121 and two or more second water inlets 122. The water inlet channel 121 is connected to each second water cavity 112 through the corresponding second water inlet 122. The water outlet structure 130 is provided with a water outlet channel 131 and two or more second water outlets 132. The water outlet channel 131 is connected to each second water cavity 112 through the corresponding second water outlet 132.

[0067] As can be seen, the heat exchange plates 110 are stacked at intervals, and second water chambers 112 are provided within the heat exchange plates 110, so that the second water chambers 112 of each heat exchange plate 110 are spaced parallel to each other. Then, the water inlet channel 121 and the water outlet channel 131 are connected to each second water chamber 112 through the water inlet structure 120 and the water outlet structure 130, respectively. Thus, in actual use, water is introduced into the water inlet channel 121, then flows into each second water chamber 112 through the second water inlet 122, and is concentratedly output through the water outlet channel 131, allowing the water to circulate smoothly. Since a ventilation channel 111 is formed between two adjacent heat exchange plates 110, which is connected to the combustion chamber 210, the second water chamber 112 and the ventilation channel 111 are separated only by the surface of the heat exchange plate 110, increasing the heat transfer area between the second water chamber 112 and the ventilation channel 111, greatly improving the heat transfer efficiency of the water heater, and thus increasing the water output rate of the heater.

[0068] Specifically, the water inlet structure 120 and the water outlet structure 130 both penetrate each heat exchange plate 110 and are connected to each heat exchange plate 110 by welding. The water inlet structure 120 and the water outlet structure 130 can be constructed with multiple pipes or a single, complete pipe. When both the water inlet structure 120 and the water outlet structure 130 are constructed with multiple pipes, the pipes are sealed and connected to each other.

[0069] It should be noted that the term "sealed connection between pipes" should be understood as a sealed connection between one end of a pipe to prevent water leakage from the connection between the pipes. The sealing connection can be achieved by welding, sleeve connection, bonding, etc.

[0070] For further information, please refer to Figure 7, a second flow-blocking groove 113 is provided on the heat exchange plate 110. The sidewalls of the second flow-blocking groove 113 extend into the ventilation channel 111. Thus, it can be seen that the second flow-blocking groove 113 is formed by being recessed into the ventilation channel 111 on the heat exchange plate 110, and the sidewalls of the second flow-blocking groove 113 extending into the ventilation channel 111 form a flow-blocking structure, which changes the flow path of water in the second water chamber 112 and prolongs the residence time of water in the second water chamber 112, allowing sufficient time for heat transfer between water and hot air. This is beneficial for improving the thermal utilization rate of the hydrothermal equipment. At the same time, the second flow-blocking groove 113 is provided on the heat exchange plate 110, so that the surface of the heat exchange plate 110 has different convex and concave shapes, thereby increasing the compressive strength of the heat exchange plate 110.

[0071] In one embodiment, please refer to Figure 4 , at least one of the two side surfaces of the heat exchange plate 110 is provided with a support protrusion 140. The support protrusion 140 supports between two adjacent heat exchange plates 110. It can be seen that the heat exchange plate 110 of this embodiment has two states: one, a support protrusion 140 is provided on one side of the heat exchange plate 110; two, support protrusions 140 are provided on both sides of the heat exchange plate 110. When a support protrusion 140 is provided on one side of the heat exchange plate 110, between two adjacent heat exchange plates 110, one end of the support protrusion 140 is connected to the heat exchange plate 110 on one side, and the other end of the support protrusion 140 is in contact with the heat exchange plate 110 on the other side. In this way, the connection strength between the heat exchange plates 110 and the heat exchange plates 110 is improved, and the spatial stability of the ventilation channel 111 is ensured; when support protrusions 140 are provided on both sides of the heat exchange plate 110, when the heat exchange plates 110 are stacked, the support protrusion 140 on one side is in contact with the support protrusion 140 on the other side.

[0072] Specifically, please refer to Figure 4 There are multiple supporting protrusions 140, and the multiple supporting protrusions 140 are distributed at intervals on the heat exchange plate 110. At the same time, the supporting protrusions 140 are cylindrical.

[0073] For further information, please refer to Figure 4 Support protrusions 140 are provided on both sides of the heat exchange plates 110. Between two adjacent heat exchange plates 110, the support protrusions 140 on one side abut against the support protrusions 140 on the other side. Thus, the provision of support protrusions 140 on both sides of the heat exchange plates 110 creates sufficient space between adjacent heat exchange plates 110, allowing more hot air to enter the ventilation channel 111.

[0074] Optionally, the support protrusions 140 are mounted on the heat exchange plate 110 by welding, integral molding, threaded connection, etc. The integral molding method may be extrusion, casting, die-casting, etc.

[0075] In one embodiment, please refer to Figure 7A fifth enclosing plate 150 is provided on the heat exchange plate 110. The fifth enclosing plate 150 surrounds the water inlet structure 120 and extends through the heat exchange plate 110. Between two adjacent heat exchange plates 110, the fifth enclosing plates 150 on either side engage with each other. This way, when the two heat exchange plates 110 are stacked, one end of the fifth enclosing plate 150 on either side tightly engages the other end of the fifth enclosing plate 150, forming a protective structure for the water inlet structure 120. This protective structure effectively prevents the water inlet structure 120 from being directly exposed to heat and potentially corroding it.

[0076] For further information, please refer to Figure 7 A first pressure relief channel 151 is provided within the fifth enclosure 150 and communicates with the second water chamber 112. The water inlet structure 120 is provided with two or more first pressure relief ports 123. The water inlet channel 121 communicates with the first pressure relief channel 151 via the first pressure relief ports 123. Thus, the provision of the first pressure relief channel 151 within the fifth enclosure 150 reduces the pressure at the second water inlet 122, allowing water to more easily pass through the second water inlet 122 and enter the second water chamber 112.

[0077] In one embodiment, please refer to Figure 7 The water inlet structure 120 includes two or more third water inlet pipes 124. The third water inlet pipes 124 are arranged in a one-to-one correspondence with the heat exchange plates 110 and pass through the heat exchange plates 110. Between two adjacent heat exchange plates 110, the third water inlet pipes 124 on both sides are sealed and connected to each other, forming a water inlet channel 121. The second water inlet 122 and the first pressure relief port 123 are both arranged in the third water inlet pipe 124. It can be seen that the water inlet structure 120 of this embodiment is composed of two or more third water inlet pipes 124, and the water inlet channel 121 is formed. At the same time, a single third water inlet pipe 124 is connected to the heat exchange plate 110, so that the second water cavity 112 of each layer of heat exchange plate 110 is supplied with water by the corresponding third water inlet pipe 124. In addition, in this embodiment, the third water inlet pipe 124 passes through the heat exchange plate 110, which can ensure that one end of the third water inlet pipe 124 is sealed and connected to another end of the third water inlet pipe 124 when the heat exchange plates 110 are stacked.

[0078] It should be noted that the sealed connection between one end of the third water inlet pipe 124 and one end of the third water inlet pipe 124 should be understood as: the sealed connection between one end of the third water inlet pipe 124 and one end of the third water inlet pipe 124 prevents water from leaking from the connection between the third water inlet pipe 124 and the third water inlet pipe 124. The sealed connection can be achieved by welding, sleeve connection, bonding, etc.

[0079] In one embodiment, please refer to Figure 8The heat exchange plates 110 are provided with a sixth enclosing plate 160. The sixth enclosing plate 160 surrounds the water outlet structure 130 and extends through the heat exchange plates 110. Between two adjacent heat exchange plates 110, the sixth enclosing plates 160 on either side abut against each other. This way, when the two heat exchange plates 110 are stacked, one end of the sixth enclosing plate 160 on either side tightly abuts against another end of the sixth enclosing plate 160, forming a protective structure for the water outlet structure 130. This protective structure effectively prevents the water outlet structure 130 from being directly exposed to hot air and potentially corroding it.

[0080] For further information, please refer to Figure 8 A second pressure relief channel 161 is provided within the sixth enclosure 160 and communicates with the second water chamber 112. The water outlet structure 130 is provided with two or more second pressure relief ports 133. The water outlet channel 131 communicates with the second pressure relief channel 161 via the second pressure relief ports 133. Thus, the provision of the second pressure relief channel 161 within the sixth enclosure 160 reduces the pressure at the second water outlet 132, allowing water to more easily pass through the second water outlet 132 and enter the second water chamber 112.

[0081] In one embodiment, please refer to Figure 8 The water outlet structure 130 includes two or more third water outlet pipes 134. The third water outlet pipes 134 are arranged in a one-to-one correspondence with the heat exchange plates 110 and penetrate the heat exchange plates 110. Between two adjacent heat exchange plates 110, the third water outlet pipes 134 on both sides are sealed and connected to each other, forming a water outlet channel 131. The second water outlet 132 and the second pressure relief port 133 are both arranged in the third water outlet pipe 134. It can be seen that the water outlet structure 130 of this embodiment is composed of two or more third water outlet pipes 134, and forms a water outlet channel 131. At the same time, a single third water outlet pipe 134 is connected to the heat exchange plate 110, so that the second water cavity 112 of each layer of heat exchange plate 110 is supplied with water by the corresponding third water outlet pipe 134. In addition, in this embodiment, the third water outlet pipe 134 passes through the heat exchange plate 110 to ensure that one end of the third water outlet pipe 134 is sealed and connected to the other end of the third water outlet pipe 134 when the heat exchange plates 110 are stacked.

[0082] It should be noted that the sealed connection between one end of the third water outlet pipe 134 and one end of the third water outlet pipe 134 should be understood as: the sealed connection between one end of the third water outlet pipe 134 and one end of the third water outlet pipe 134 prevents water from leaking from the connection between the third water outlet pipe 134 and the third water outlet pipe 134. The sealed connection can be achieved by welding, sleeve connection, bonding, etc.

[0083] In one embodiment, please refer to Figure 7The second water chamber 112 includes a second water inlet section 1121, a cooling section 1124, a third water separation chamber 1123, and a second water outlet section 1122, which are connected in sequence by water channels. The cooling section 1124 is located on the side of the heat exchange plate group 100 close to the combustion chamber 210. The second water inlet section 1121 is connected to the first water inlet 240, and the second water outlet section 1122 is connected to the first water outlet 250. In this way, when water enters the second water chamber 112, it first flows from the second water inlet section 1121 into the cooling section 1124. Since the cooling section 1124 is distributed close to the combustion chamber 210, the inflowing water first reduces the temperature of the combustion environment, causing the water temperature to rise. The increased water then flows into the third water separation chamber 1123. In this way, it is not only beneficial to improve the heat exchange efficiency of water, but also to reduce the temperature of the combustion environment, thereby reducing the surface temperature of the heat exchanger. Furthermore, the second water chamber 112 is divided into multiple sections and arranged in a serpentine pattern, significantly increasing the path of the second water chamber 112. This helps increase the residence time of water within the heat exchange plates 110 and improves the heat transfer efficiency of the hydrothermal device. It should be noted that the second water chamber 112 can be formed by drilling directly into the heat exchange plate assembly 100, or by joining and welding two heat exchange plates 110 together to form the second water chamber 112 between them.

[0084] For further information, please refer to Figure 7 There are multiple third water separation cavities 1123, and the multiple third water separation cavities 1123 are spaced apart and arranged in parallel, and the multiple water cavities are connected in sequence. The third water separation cavities 1123 located at both ends are respectively connected to the second water inlet section 1121 and the second water outlet section 1122, so as to ensure that the water has sufficient heat transfer time in the second water cavity 112.

[0085] Specifically, please refer to Figure 7 There are three third water separation cavities 1123 , and the three third water separation cavities 1123 are arranged at intervals, and the three third water separation cavities 1123 are connected in sequence to form or approximate a serpentine channel.

[0086] In one embodiment, please refer to Figure 5 A first connecting plate 114 and a second connecting plate 115 are connected between two adjacent heat exchange plates 110. The first connecting plate 114 and the second connecting plate 115 are located on opposite sides of the heat exchange plates 110, and the first connecting plate 114, the second connecting plate 115, and the space between the two adjacent heat exchange plates 110 form a ventilation channel 111. In this way, the first connecting plate 114 and the second connecting plate 115 ensure a stable connection between the heat exchange plates 110, thereby improving the overall structural strength of the heat exchange plate assembly 100. Furthermore, the ventilation channel 111 formed by the first connecting plate 114, the second connecting plate 115, and the two adjacent heat exchange plates 110 has two openings: one opening is intended to face the combustion chamber 210, and the other opening is intended to discharge hot air.

[0087] In one embodiment, please refer to Figure 1 The heat exchange shell 200 is provided with a mounting hole 228 and an observation hole 229 that are connected to the combustion chamber 210. The first mounting hole 228 is used to install the ignition needle and the feedback needle.

[0088] Specifically, the mounting hole 228 and the observation hole 229 are both provided on the first shell 220 .

[0089] In one embodiment, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , a hot water device, comprising the heat exchanger in any one of the above embodiments.

[0090] The above-mentioned water heater uses the above-mentioned heat exchanger to pass water into the first water inlet 240, so that the water flows into the second water chamber 112. Since the ventilation channel 111 is connected to the combustion chamber 210 when the heat exchange plate assembly 100 is installed in the heat exchange shell 200, the hot air in the combustion chamber 210 will enter the ventilation channel 111 and exchange heat with the water in the second water chamber 112, thereby increasing the water temperature. The heated water flows from the second water chamber 112 into the first water outlet 250 and is output from the first water outlet 250 to complete the supply of hot water. Since the heat exchange shell 200 is also provided with a first water chamber 280, and the first water chamber 280 is distributed circumferentially around the combustion chamber 210, when the water enters the second water chamber 112, it will also enter the first water chamber 280. The water that enters will absorb a large amount of heat from the heat exchange shell 200, effectively reducing the surface temperature of the water heater equipment and ensuring the safe use of the equipment. At the same time, the absorbed water flows from the first water chamber 280 into the first water outlet 250 and is output from the first water outlet 250 for use by the user. This greatly improves the utilization rate of thermal energy, which helps the device achieve energy conservation and consumption reduction. It also helps ensure the water output rate of the device. In addition, this embodiment disposes the combustion chamber 210 within the heat exchange shell 200. On the one hand, it does not require the installation of an additional independent combustion chamber, which reduces the number of parts of the water heater and improves assembly efficiency. On the other hand, it does not need to consider the airtightness of the connection between the burner and the heat exchanger, which improves the safety and reliability of the water heater.

[0091] Optionally, the hot water equipment may be a gas water heater, a gas heating hot water boiler, etc.

[0092] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0093] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A heat exchanger, characterized in that: include: A heat exchange shell (200), wherein a combustion chamber (210) and a heat exchange chamber (290) are formed in the heat exchange shell (200), and a first water inlet (240), a first water chamber (280), and a first water outlet (250) are provided on the heat exchange shell (200), the first water chamber (280) and the first water outlet (250) being sequentially connected by a water passage, wherein the first water chamber (280) is at least partially arranged around the periphery of the combustion chamber (210); and A heat exchange plate group (100), wherein the heat exchange plate group (100) is at least partially located in the heat exchange cavity (290), and a ventilation channel (111) and a second water cavity (112) are provided on the heat exchange plate group (100), wherein the ventilation channel (111) is in communication with the combustion cavity (210), and the first water inlet (240), the second water cavity (112), and the first water outlet (250) are in communication with each other in sequence; The heat exchange plate group (100) comprises more than two heat exchange plates (110), a water inlet structure (120) and a water outlet structure (130); the more than two heat exchange plates (110) are arranged in a stacked manner, and the ventilation channel (111) is formed between two adjacent heat exchange plates (110); the second water cavity (112) is arranged on the heat exchange plate (110); the water inlet structure (120) is provided with a water inlet channel (121) and more than two second water inlets (122); the water inlet channel (121) is communicated with each second water cavity (112) through the corresponding second water inlet (122); the water outlet structure (130) is provided with a water outlet channel (131) and more than two second water outlets (132); the water outlet channel (131) is communicated with each second water cavity (112) through the corresponding second water outlet (132); A fifth enclosure (150) is provided on the heat exchange plate (110), and the fifth enclosure (150) surrounds the periphery of the water inlet structure (120). The fifth enclosure (150) passes through the heat exchange plate (110), and between two adjacent heat exchange plates (110), the fifth enclosures (150) on both sides are in contact with each other; a first pressure relief channel (151) communicating with the second water cavity (112) is provided in the fifth enclosure (150), and more than two first pressure relief ports (123) are provided on the water inlet structure (120), and the water inlet channel (121) is communicated with the first pressure relief channel (151) through the first pressure relief port (123).

2. The heat exchanger according to claim 1, characterized in that The first water chamber (280) comprises a heat exchange portion (281) and a cooling portion (282) that are connected to each other. The heat exchange portion (281) is located outside the heat exchange chamber (290), and the cooling portion (282) is located outside the combustion chamber (210).

3. The heat exchanger according to claim 2, characterized in that The heat exchange section (281) includes a first water inlet section (2811) and a first water outlet section (2812); the first water inlet section (2811) is connected to the first water inlet (240); the first water outlet section (2812) is connected to the first water outlet (250); the cooling section (282) includes a first surrounding section (2821), a connecting section (2822) and a second surrounding section (2823); the first water inlet section (2811), the first surrounding section (2821), the connecting section (2822), the second surrounding section (2823) and the first water outlet section (2812) are connected in sequence by water channels.

4. The heat exchanger according to claim 2, characterized in that The heat exchange shell (200) comprises a first shell (220) and a second shell (230) adapted to each other; the first water cavity (280) is divided into a first water partition cavity (283) and a second water partition cavity (284); and both the first water partition cavity (283) and the second water partition cavity (284) comprise the heat exchange portion (281) and the cooling portion (282); the first shell (220) is provided with the first water inlet (240), the first water partition cavity (283), and the first water outlet (250) which are connected in sequence by a waterway; the second shell (230) is provided with the second water partition cavity (284); and the second water partition cavity (284) is also connected to the first water inlet (240) and the first water outlet (250), respectively.

5. The heat exchanger according to claim 4, characterized in that The first shell (220) comprises a first outer shell (221) and a first inner shell (222), the first inner shell (222) is arranged on the first outer shell (221), and the first inner shell (222) and the first outer shell (221) together form the first water separation cavity (283); and / or, The second shell (230) comprises a second outer shell (231) and a second inner shell (232); the second inner shell (232) is arranged on the second outer shell (231), and the second inner shell (232) and the second outer shell (231) together form the second water separation cavity (284).

6. The heat exchanger according to claim 4, characterized in that The first shell (220) is provided with a first water inlet pipe (223) communicating with the first water inlet (240) and a first water outlet pipe (224) communicating with the first water outlet (250); a first opening (2231) is provided in the first water inlet pipe (223); a second opening (2241) is provided in the first water outlet pipe (224); both the first opening (2231) and the second opening (2241) are communicated with the first water separation cavity (283).

7. The heat exchanger according to claim 6, characterized in that The first shell (220) is further provided with a first enclosing plate (225) and a second enclosing plate (226), wherein the first enclosing plate (225) surrounds the periphery of the first water inlet pipe (223), and the second enclosing plate (226) surrounds the periphery of the first water outlet pipe (224).

8. The heat exchanger according to claim 4, characterized in that The second shell (230) is provided with a second water inlet pipe (233) communicating with the first water inlet (240) and a second water outlet pipe (234) communicating with the first water outlet (250); a third opening (2331) is provided in the second water inlet pipe (233); a fourth opening (2341) is provided in the second water outlet pipe (234); and both the third opening (2331) and the fourth opening (2341) are communicated with the second water separation cavity (284).

9. The heat exchanger according to any one of claims 1 to 8, characterized in that: The second water chamber (112) comprises a second water inlet section (1121), a cooling section (1124), a third water separation chamber (1123) and a second water outlet section (1122) which are sequentially connected by water channels; the cooling section (1124) is located on a side of the heat exchange plate group (100) close to the combustion chamber (210); the second water inlet section (1121) is connected to the first water inlet (240); and the second water outlet section (1122) is connected to the first water outlet (250).

10. A water heating device, characterized in that: A heat exchanger comprising the heat exchanger according to any one of claims 1 to 9.

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