Heat exchange device and water heater

Abstract

The application discloses a heat exchange device, which comprises a heat exchange body, a plurality of heat exchange channels arranged in sequence from top to bottom on the heat exchange body, a water inlet structure, a water outlet structure and a bypass pipe.

Description

Technical Field

[0001] This invention relates to the field of heat exchanger technology, and in particular to a heat exchange device and a water heater. Background Technology

[0002] Existing gas water heaters using coilless stainless steel heat exchangers inevitably experience fluctuations in outlet water temperature during showering due to water pressure fluctuations. Furthermore, brief shutdowns followed by restarts can cause temperature rises, severely impacting user comfort. To overcome these shortcomings, current technology involves connecting an external water storage tank next to the heat exchanger to buffer temperature rises. However, this storage tank is space-consuming, and if too small, it fails to provide adequate buffering. Summary of the Invention

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art and to provide a heat exchange device that can save water storage space.

[0004] According to a first aspect of the present invention, a heat exchange device includes: a heat exchange body and a plurality of heat exchange channels arranged sequentially from top to bottom on the heat exchange body; a water inlet structure having a water inlet located at the upper part of the water inlet structure, the water inlet structure being connected to one side of the heat exchange body so that the water inlet communicates with one end of the heat exchange channel; a water outlet structure having a water storage cavity and a water outlet communicating with the water storage cavity, the water outlet located at the upper part of the water outlet structure, the water outlet structure being connected to the other side of the heat exchange body so that the water storage cavity communicates with the other end of the heat exchange channel; and a bypass pipe having one end communicating with the water inlet and the other end communicating with the water storage cavity.

[0005] According to some embodiments of the present invention, the water inlet structure is provided with a plurality of first connecting grooves arranged sequentially from top to bottom. The uppermost first connecting groove is connected to the port of the top heat exchange channel and the water inlet, respectively. The remaining first connecting grooves are sequentially connected to two adjacent heat exchange channels. Water flows through the water inlet and the first connecting grooves into the top heat exchange channel. Since the other first connecting grooves are sequentially connected to two adjacent heat exchange channels, the water can flow downwards in an S-shape along the heat exchange channel.

[0006] According to some embodiments of the present invention, the water inlet structure includes a first housing and a first base plate. The water inlet and a plurality of first connecting grooves are respectively disposed on the first housing. The first base plate is provided with a first bypass hole for the bypass pipe and a plurality of first through holes corresponding one-to-one with the heat exchange channels. The first base plate is connected to one side of the heat exchange body. The first housing is connected to the first base plate so that the first connecting grooves communicate with the corresponding heat exchange channels. In installation, the first base plate is first welded to the heat exchange body, and then the first housing is fixed to the first base plate. The first base plate has a large area, which facilitates the fixing of the first housing.

[0007] According to some embodiments of the present invention, a first connecting portion is provided around the edge of the first base plate, and a second connecting portion is provided at the top and bottom of the first housing, wherein the second connecting portion is connected to the first connecting portion. The structure is simple and easy to connect.

[0008] According to some embodiments of the present invention, the water outlet structure is provided with a plurality of second connecting grooves arranged sequentially from top to bottom. The second connecting grooves are isolated from the water storage chamber. The second connecting grooves sequentially connect two adjacent heat exchange channels, so that the water flow can flow downward in an S-shape. The water storage chamber is connected to the port of the bottommost heat exchange channel, so that the water flow eventually enters the water storage chamber. When the water heater is turned off, cold water enters the water storage chamber through the bypass pipe and mixes with the hot water therein, which plays a buffering role.

[0009] According to some embodiments of the present invention, the water outlet structure includes a second shell, a third shell, and a second base plate arranged sequentially. The water outlet is disposed on the second shell. The second base plate is provided with a second bypass hole for the bypass pipe and a plurality of second through holes corresponding one-to-one with the heat exchange channels. A plurality of second connecting grooves are respectively disposed on the third shell. The third shell is also provided with a third bypass hole for the bypass pipe and a third through hole communicating with the port of the bottom heat exchange channel. The second base plate is connected to the other side of the heat exchange body. The third shell is connected to the second base plate so that the second connecting groove communicates with the corresponding heat exchange channel. The second shell is connected to the third shell so that the space between the second shell and the third shell forms the water storage cavity. The water storage cavity communicates with the port of the bottom heat exchange channel through the third through hole. Water in the bottom heat exchange channel enters the water storage cavity through the third through hole. The third shell isolates the water storage cavity from the second connecting groove, and the connection between the second shell and the third shell makes the water storage cavity and the second connecting groove integrally disposed, saving space.

[0010] According to some embodiments of the present invention, the second housing is provided with a water storage tank, the water outlet is located at the bottom of the water storage tank, and the space between the water storage tank and the third housing forms the water storage cavity. The water storage tank increases the space of the water storage cavity and improves the buffering effect.

[0011] According to some embodiments of the present invention, a third connecting portion is provided around the edge of the second base plate, and a fourth connecting portion is provided at the top and bottom of the third housing, wherein the fourth connecting portion is connected to the third connecting portion, which has a simple structure and is easy to connect.

[0012] According to some embodiments of the present invention, the second housing is provided with fifth connecting portions on both sides, and the fifth connecting portions are connected to the third connecting portions, which has a simple structure and is easy to connect.

[0013] The heat exchange device according to embodiments of the present invention has at least the following beneficial effects: when the water heater is working normally, hot water enters the heat exchange channel from the inlet and then flows out from the outlet through the water storage chamber; when the water heater is restarted after a short period of inactivity, cold water can enter the bypass pipe through the inlet pipe. Since the bypass pipe is connected to the water storage chamber, the cold water flows into the water storage chamber to mix with the high-temperature hot water therein, playing a buffering role and preventing the water temperature from rising rapidly in a short period of time; furthermore, since the water storage chamber is integrally set on the water outlet structure, it saves space for the heat exchange device and has a neat and beautiful appearance.

[0014] According to a second aspect of the present invention, a water heater includes a heat exchange device, an inlet pipe, and an outlet pipe as described in any of the preceding claims. The inlet pipe is connected to the inlet port, and the outlet pipe is connected to the outlet port. When the water heater stops operating, cold water can flow into the storage chamber through a bypass pipe to mix with the hot water therein, thereby playing a buffering role and preventing the water temperature from rising rapidly in a short period of time. Furthermore, since the storage chamber is integrally set on the outlet structure, it saves space for the heat exchange device.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings;

[0017] Figure 1 This is an overall structural diagram of the heat exchange device;

[0018] Figure 2 This is an exploded structural diagram of the heat exchange device;

[0019] Figure 3 It shows the cross-sectional structure diagram of the heat exchange device and a schematic diagram of the water flow direction. Detailed Implementation

[0020] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0021] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0022] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] Reference Figures 1 to 3 The present invention provides a heat exchange device, comprising a heat exchange body 10, an inlet structure, an outlet structure, a bypass pipe 40, and a plurality of heat exchange channels 11 penetrating the heat exchange body 10, wherein the plurality of heat exchange channels 11 are arranged sequentially from top to bottom; the inlet structure is provided with a first connecting groove 211 and an inlet 212 communicating with the first connecting groove 211, the inlet 212 being located at the upper part of the inlet structure, and the inlet structure being connected to one side of the heat exchange body 10 so that the first connecting groove 211 is connected to one end of the heat exchange channel 11; The water outlet structure is provided with a second connecting groove 321 and a water storage cavity 311 that are isolated from each other, and a water outlet 312 that is connected to the water storage cavity 311. The water outlet is located at the upper part of the water outlet structure. The water outlet structure is connected to the other side of the heat exchange body 10 so that the second connecting groove 321 and the water storage cavity 311 are respectively connected to the other end of the heat exchange channel 11. The bypass pipe 40 is located above the heat exchange body. One end of the bypass pipe 40 is connected to the water inlet 212, and the other end of the bypass pipe 40 is connected to the upper part of the water storage cavity 311.

[0024] When the water heater is working normally, hot water enters the first connecting groove 211 from the inlet 212 and then flows into the heat exchange channel 11. Since there are multiple heat exchange channels 11, and the first connecting groove 211 can connect one end of the heat exchange channel 11 and the second connecting groove 321 can connect the other end of the heat exchange channel 11, the water flows downward in an S-shape along the multiple heat exchange channels 11. Since the water storage chamber 311 is connected to the other end of the heat exchange channel 11, the water finally enters the water storage chamber 311 and then flows out through the outlet 312 connected to the water storage chamber 311. When the water heater is restarted after a short period of inactivity, cold water can enter the bypass pipe 40 through the inlet pipe. Since the bypass pipe 40 is connected to the water storage chamber 311, the cold water flows into the water storage chamber 311 to mix with the high-temperature hot water therein, which plays a buffering role and prevents the water temperature from rising rapidly in a short period of time. In addition, since the water storage chamber 311 is integrated into the water outlet structure, it saves space for the heat exchange device and has a neat and beautiful appearance.

[0025] like Figure 2 and Figure 3 As shown, in some embodiments, there are multiple first connecting channels 211 arranged sequentially from top to bottom. The uppermost first connecting channel 211 is connected to the port of the top heat exchange channel 11 and the inlet 212, respectively. The remaining first connecting channels 211 are connected to two adjacent heat exchange channels 11 in sequence. Water flows through the inlet 212 and the first connecting channel 211 into the top heat exchange channel 11. Since the other first connecting channels 211 are connected to two adjacent heat exchange channels 11 in sequence, the water can flow downwards in an S-shape along the heat exchange channel 11.

[0026] In some embodiments, the water inlet structure includes a first housing 21 and a first base plate 22. A water inlet 212 and a plurality of first connecting grooves 211 are respectively disposed on the first housing 21. The first base plate 22 is provided with a first bypass hole for the bypass pipe 40 and a plurality of first through holes corresponding one-to-one with the heat exchange channels 11. The first base plate 22 is connected to one side of the heat exchange body 10. The first housing 21 is connected to the first base plate 22 so that the first connecting grooves 211 are connected to the corresponding heat exchange channels 11. During installation, the first base plate 22 is first welded to the heat exchange body, and then the first housing 21 is fixed to the first base plate 22. The first base plate 22 has a large area, which facilitates the fixing of the first housing 21.

[0027] In some embodiments, a first connecting portion 221 is provided around the edge of the first base plate 22, and a second connecting portion 213 is provided at the top and bottom of the first housing 21. The second connecting portion 213 is connected to the first connecting portion 221, which is simple in structure and easy to connect.

[0028] In some embodiments, there are multiple second connecting channels 321 arranged sequentially from top to bottom. The second connecting channels 321 sequentially connect two adjacent heat exchange channels 11, so that the water flow can flow downward in an S-shape. The water storage cavity 311 is connected to the port of the bottom heat exchange channel 11, so that the water flow eventually enters the water storage cavity 311. When the water heater is stopped, cold water enters the water storage cavity 311 through the bypass pipe 40 and mixes with the high-temperature hot water therein, which plays a buffering role.

[0029] In some embodiments, the water outlet structure includes a second housing 31, a third housing 32, and a second base plate 33 arranged sequentially. An outlet 312 is disposed on the second housing 31. The second base plate 33 has a second bypass hole 331 for the passage of a bypass pipe 40 and multiple second through holes 332 corresponding one-to-one with the heat exchange channels 11. Multiple second connecting grooves 321 are respectively disposed on the third housing 32. The third housing 32 also has a third bypass hole 322 for the passage of the bypass pipe 40 and a third through hole 323 communicating with the port of the bottommost heat exchange channel 11. The second base plate 33 is connected to the other side of the heat exchange body 10. 2. The second base plate 33 is connected to the second connecting groove 321 to the corresponding heat exchange channel 11. The second shell 31 is connected to the third shell 32 to form a water storage cavity 311 in the space between the second shell 31 and the third shell 32. The water storage cavity 311 is connected to the port of the bottom heat exchange channel 11 through the third through hole 323. The water in the bottom heat exchange channel 11 enters the water storage cavity 311 through the third through hole 323. The third shell 32 isolates the water storage cavity 311 from the second connecting groove 321. The connection between the second shell 31 and the third shell 32 makes the water storage cavity 311 and the second connecting groove 321 an integral unit, saving space.

[0030] In some embodiments, the second housing 31 is provided with a water storage tank 313, and the water outlet 312 is located at the bottom of the water storage tank 313. The space between the water storage tank 313 and the third housing 32 forms a water storage cavity 311. The water storage tank 313 increases the space of the water storage cavity 311 and improves the buffering effect.

[0031] In some embodiments, a third connecting portion 333 is provided around the edge of the second base plate 33, and a fourth connecting portion 324 is provided at the top and bottom of the third housing 32. The fourth connecting portion 324 is connected to the third connecting portion 333, which is simple in structure and easy to connect.

[0032] In some embodiments, the second housing 31 is provided with a fifth connecting part 314 on both sides, and the fifth connecting part 314 is connected to the third connecting part 333. The structure is simple and easy to connect.

[0033] According to an embodiment of the present invention, a water heater includes a heat exchange device, an inlet pipe, and an outlet pipe as described above. The inlet pipe is connected to the inlet 212, and the outlet pipe is connected to the outlet 312. When the water heater stops running, cold water can flow into the storage chamber 311 through the bypass pipe 40 to mix with the hot water therein, thereby playing a buffering role and preventing the water temperature from rising rapidly in a short period of time. Furthermore, since the storage chamber 311 is integrally set on the outlet structure, the space of the heat exchange device is saved.

[0034] It will be readily understood by those skilled in the art that the above preferred methods can be freely combined and superimposed without conflict.

[0035] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct or indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A heat exchange device, characterized in that, include: Heat exchange body (10) and multiple heat exchange channels (11) arranged on the heat exchange body from top to bottom. The water inlet structure is provided with a water inlet (212), which is located at the upper part of the water inlet structure. The water inlet structure is connected to one side of the heat exchange body (10) so that the water inlet (212) is connected to one end of the heat exchange channel (11). The water outlet structure is provided with a water storage cavity (311) and a water outlet (312) communicating with the water storage cavity (311). The water outlet (312) is located at the upper part of the water outlet structure. The water outlet structure is connected to the other side of the heat exchange body (10) so that the water storage cavity (311) is connected to the other end of the heat exchange channel (11). A bypass pipe (40) is provided, one end of which is connected to the inlet (212) and the other end of which is connected to the water storage chamber (311). The water outlet structure is also provided with a plurality of second connecting grooves (321) arranged sequentially from top to bottom. The second connecting grooves (321) are isolated from the water storage cavity (311). The second connecting grooves (321) are sequentially connected to two adjacent heat exchange channels (11). The water storage cavity (311) is connected to the port of the bottom heat exchange channel (11).

2. The heat exchange device according to claim 1, characterized in that: The water inlet structure is provided with a plurality of first connecting grooves (211) arranged sequentially from top to bottom. The uppermost first connecting groove (211) is connected to the port of the heat exchange channel (11) at the top layer and the water inlet (212) respectively. The remaining first connecting grooves (211) are connected to two adjacent heat exchange channels (11) in sequence.

3. The heat exchange device according to claim 2, characterized in that: The water inlet structure includes a first shell (21) and a first base plate (22). The water inlet (212) and a plurality of first connecting grooves (211) are respectively disposed on the first shell (21). The first base plate (22) is provided with a first bypass hole for the bypass pipe (40) and a plurality of first through holes corresponding one-to-one with the heat exchange channel (11). The first base plate (22) is connected to one side of the heat exchange body (10). The first shell (21) is connected to the first base plate (22) so that the first connecting groove (211) is connected to the corresponding heat exchange channel (11).

4. The heat exchange device according to claim 3, characterized in that: The first base plate (22) has a first connecting part (221) around its edge, and the top and bottom of the first housing (21) are respectively provided with a second connecting part (213), which is connected to the first connecting part (221).

5. The heat exchange device according to claim 1, characterized in that: The water outlet structure includes a second shell (31), a third shell (32), and a second base plate (33) arranged sequentially. The water outlet (312) is located on the second shell (31). The second base plate (33) is provided with a second bypass hole (331) for the bypass pipe (40) and a plurality of second through holes (332) corresponding one-to-one with the heat exchange channel (11). A plurality of second connecting grooves (321) are respectively arranged on the third shell (32). The third shell (32) is also provided with a third bypass hole (322) for the bypass pipe (40) and a heat exchange channel at the bottom layer. The port of the channel (11) is connected to the third through hole (323), the second base plate (33) is connected to the other side of the heat exchange body (10), the third shell (32) is connected to the second base plate (33) so that the second connecting groove (321) is connected to the corresponding heat exchange channel (11), the second shell (31) is connected to the third shell (32) so that the space between the second shell (31) and the third shell (32) forms the water storage cavity (311), and the water storage cavity (311) is connected to the port of the bottom heat exchange channel (11) through the third through hole (323).

6. The heat exchange device according to claim 5, characterized in that: The second housing (31) is provided with a water storage tank (313), and the water outlet (312) is located at the upper part of the water storage tank (313). The space between the water storage tank (313) and the third housing (32) forms the water storage cavity (311).

7. The heat exchange device according to claim 5, characterized in that: The second base plate (33) has a third connecting part (333) around its edge, and the top and bottom of the third housing (32) are respectively provided with a fourth connecting part (324), which is connected to the third connecting part (333).

8. The heat exchange device according to claim 7, characterized in that: The second housing (31) has a fifth connecting part (314) on both sides, and the fifth connecting part (314) is connected to the third connecting part (333).

9. A water heater, characterized in that: The heat exchange device includes any one of claims 1 to 8, wherein the inlet pipe is connected to the inlet (212) and the outlet pipe is connected to the outlet (312).

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