CN108662757B

CN108662757B - Volumetric heat exchange device and water heater with same

Info

Publication number: CN108662757B
Application number: CN201710214506.6A
Authority: CN
Inventors: 代先锋; 梁国荣
Original assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Current assignee: Midea Group Co Ltd; Wuhu Midea Kitchen and Bath Appliances Manufacturing Co Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2023-11-21
Anticipated expiration: 2037-04-01
Also published as: CN108662757A

Abstract

The invention discloses a positive displacement heat exchange device and a water heater with the same, wherein the positive displacement heat exchange device comprises: a burner housing defining a combustion chamber therein having an open upper end; a burner disposed within the combustion chamber to generate flue gas; the inner container is arranged at the upper end of the burner shell, a water storage cavity is defined in the inner container, an upper opening communicated with the outside is formed in the upper part of the water storage cavity, a lower opening communicated with the combustion cavity is formed in the lower part of the water storage cavity, and a heat exchange channel with two ends extending to the upper part and the lower part of the inner container respectively and communicated with the outside and the combustion cavity is formed in the side wall of the inner container; the main heat exchange tube is arranged in the water storage cavity, the upper end of the main heat exchange tube is hermetically arranged in the upper opening, and the lower end of the main heat exchange tube is hermetically arranged in the lower opening. According to the positive displacement heat exchange device provided by the embodiment of the invention, the heat exchange efficiency is improved, and the heat exchange effect is better.

Description

Volumetric heat exchange device and water heater with same

Technical Field

The invention relates to the technical field of hot water, in particular to a positive displacement heat exchange device and a water heater with the same.

Background

The volumetric gas water heater has the advantages of constant water temperature, large hot water supply, low use cost and the like, and has good development prospect in the commercial field. The volumetric gas water heater in the related art heats water by adopting flue gas, has low heat exchange efficiency and ensures that the temperature of the heated water is not uniform enough.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the positive displacement heat exchange device, which has the advantages of improved heat exchange efficiency and good heat exchange effect.

The invention also provides a water heater with the positive displacement heat exchange device.

According to an embodiment of the invention, a positive displacement heat exchange device comprises: a burner housing defining a combustion chamber therein having an open upper end; a burner disposed within the combustion chamber to produce flue gas; the inner container is arranged at the upper end of the burner shell, a water storage cavity is defined in the inner container, an upper opening communicated with the outside is formed in the upper portion of the water storage cavity, a lower opening communicated with the combustion cavity is formed in the lower portion of the water storage cavity, heat exchange channels with two ends extending to the upper portion and the lower portion of the inner container respectively are arranged on the side wall of the inner container, an air passage extending into the water storage cavity and communicated with the combustion cavity and the lower portion of the heat exchange channels respectively is formed in the bottom of the inner container, and the upper portion of the heat exchange channels is communicated with the outside; the main heat exchange tube is arranged in the water storage cavity, the upper end of the main heat exchange tube is arranged in the upper opening in a sealing way, and the lower end of the main heat exchange tube is arranged in the lower opening in a sealing way.

According to the positive displacement heat exchange device provided by the embodiment of the invention, the heat exchange efficiency is improved, and the heat exchange effect is better.

In addition, the positive displacement heat exchange device according to the above embodiment of the present invention may further have the following additional technical features:

optionally, the air passage is formed in a U shape with a downward opening.

Further, the top wall of the air passage is formed into an arc shape.

The volumetric heat exchange device according to the embodiment of the invention further comprises: the bottom wall of the inner container is recessed to the water storage cavity to form a lower groove, the separator is arranged in the combustion cavity, the upper end of the separator stretches into the lower groove to separate the air passage, and the separator is connected with at least one of the inner container and the combustor shell.

In particular, the partition is an annular plate and extends downwardly beyond the burner.

Optionally, the heat exchange channel is disposed around the combustion chamber.

Further, the air passage includes a plurality of air passages provided at intervals along a circumferential direction of the inner container.

According to the embodiment of the invention, the positive displacement heat exchange device further comprises: the shell, the inner bag with the combustor shell is established in the shell, the upper portion of shell is equipped with intercommunication main heat exchange tube and external and heat transfer passageway and external export, the heat transfer passageway is at least by the internal face of shell with the external wall surface of inner bag defines.

Further, the lower part of the heat exchange channel extends to the burner shell and is limited by the outer wall surface of the burner shell and the inner wall surface of the shell, and a vent hole which is communicated with the combustion cavity and the heat exchange channel is arranged on the side wall of the burner shell.

Optionally, the vent includes a plurality of vents spaced apart along the circumference of the burner housing.

In some embodiments of the invention, the primary heat exchange tube is disposed coaxially with the inner bladder.

Optionally, the bottom wall of the inner container is formed into an arc shape recessed upwards, and the lower opening is arranged in the middle of the bottom wall of the inner container.

Optionally, the main heat exchange tube is welded with the liner.

According to the embodiment of the invention, the positive displacement heat exchange device further comprises: the heat exchange turbulence piece is arranged in the main heat exchange tube and is connected with the main heat exchange tube.

Further, the heat exchange spoiler comprises: the spoiler main body extends along the axial direction of the main heat exchange tube and is connected with the main heat exchange tube, and a plurality of flow disturbing holes are formed in the spoiler main body at intervals along the length direction of the spoiler main body; the heat exchange fins are connected to the upper edges of the turbulence holes in a one-to-one correspondence mode, and each heat exchange fin extends downwards and obliquely in a direction away from the turbulence plate main body.

The water heater comprises the positive displacement heat exchange device.

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.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

FIG. 1 is a cross-sectional view of a positive displacement heat exchange device according to a first embodiment of the present invention;

fig. 2 is a schematic structural view of a positive displacement heat exchange device according to a first embodiment of the present invention;

FIG. 3 is a cross-sectional view of a positive displacement heat exchange device according to a second embodiment of the present invention;

fig. 4 is a schematic structural view of a positive displacement heat exchange device according to a second embodiment of the present invention;

fig. 5 is a cross-sectional view of a positive displacement heat exchange device according to a third embodiment of the present invention;

fig. 6 is a schematic structural view of a positive displacement heat exchange device according to a third embodiment of the present invention;

fig. 7 is a cross-sectional view of a positive displacement heat exchange device according to a fourth embodiment of the present invention;

fig. 8 is a schematic structural view of a positive displacement heat exchange device according to a fourth embodiment of the present invention;

Fig. 9 is a cross-sectional view of a positive displacement heat exchange device according to a fifth embodiment of the present invention;

fig. 10 is a schematic structural view of a positive displacement heat exchange device according to a fifth embodiment of the present invention;

FIG. 11 is an enlarged schematic view of the structure of FIG. 10 at circle A;

FIG. 12 is a cross-sectional view of a positive displacement heat exchange device according to a sixth embodiment of the present invention;

fig. 13 is a schematic structural view of a positive displacement heat exchange device according to a sixth embodiment of the present invention;

fig. 14 is a cross-sectional view of a positive displacement heat exchange device according to a seventh embodiment of the present invention;

fig. 15 is a schematic structural view of a positive displacement heat exchange device according to a seventh embodiment of the present invention;

FIG. 16 is an enlarged schematic view of the structure of FIG. 14 at circle B;

FIG. 17 is an enlarged schematic view of the structure of FIG. 15 at circle C;

fig. 18 is a cross-sectional view of a positive displacement heat exchange device according to an eighth embodiment of the invention;

fig. 19 is a schematic structural view of a positive displacement heat exchange device according to an eighth embodiment of the present invention;

FIG. 20 is a cross-sectional view of a positive displacement heat exchange device according to a ninth embodiment of the invention;

FIG. 21 is a top view of a positive displacement heat exchange device according to a ninth embodiment of the present invention;

FIG. 22 is a schematic view of an assembled heat exchanging fin and primary heat exchanging tube of a positive displacement heat exchanger according to a ninth embodiment of the present invention;

FIG. 23 is a schematic view of the flow of flue gas through a positive displacement heat exchange device according to a ninth embodiment of the present invention;

FIG. 24 is a schematic view of a heat exchanging fin according to an embodiment of the present invention;

FIG. 25 is an enlarged schematic view of the structure of FIG. 24 at circle D;

FIG. 26 is a cross-sectional view of a positive displacement heat exchange device equipped with heat exchange spoilers in accordance with an embodiment of the invention;

fig. 27 is a top view of a positive displacement heat exchange device equipped with heat exchange spoilers according to an embodiment of the invention.

Reference numerals:

a positive displacement heat exchange device 100;

an inner container 10;

a water storage chamber 101; a flange 102; a heat exchange channel 103; an airway 104; an upper opening 105; a lower opening 106;

a burner housing 20; a vent 201; a combustion chamber 202; a burner 30;

a heat exchange branch pipe 41; a peripheral branch pipe 411; a middle branch pipe 412;

an upper heat exchange tube 42; lower heat exchange tube 43;

a main heat exchange tube 44; middle tube section 441, upper tube section 442; a lower pipe section 443;

a peripheral ventilation channel 401; a central ventilation channel 402;

a housing 50; an outer outlet 501; an inner housing 51; an outer housing 52; a mounting port 521;

a heat exchange spoiler 60; a spoiler main body 61; heat exchange fins 62; a disturbance aperture 601;

a primary spoiler 611; hemming 6111; a lightening hole 6112;

a mounting section 612; a mounting portion 6121;

A drain 70; a water receiving part 701; a drain 702; a drain opening 703;

a water receiving ring 71; a drain support arm 72;

a partition 80; a temperature controller 110; a water inlet pipe 120; and a water outlet pipe 130.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary for the purpose of illustrating the present invention and are not to be construed as limiting the present invention, and various changes, modifications, substitutions and alterations may be made therein by one of ordinary skill in the art without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents.

In the description of the present invention, it should be understood that the terms "center", "length", "width", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

A positive displacement heat exchange device 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

Referring to fig. 1 to 27, a positive displacement heat exchange device 100 according to an embodiment of the present invention may include: the burner comprises an inner container 10, a burner shell 20, a burner 30 and a heat exchange smoke tube.

Specifically, the inner container 10 may define a water storage chamber 101 therein, and the heat exchanging smoke pipe may be disposed in the water storage chamber 101. The upper part of the inner container 10 is provided with an upper opening 105, the upper opening 105 is communicated with the outside, and the upper end of the heat exchange smoke tube can be arranged in the upper opening 105 in a sealing way. Therefore, the heat exchange smoke pipe can be communicated with the outside, and meanwhile, the inner container 10 is in sealing connection with the heat exchange smoke pipe, so that water leakage can be effectively prevented.

The burner housing 20 defines therein a combustion chamber 202 having an open upper end, and the burner 30 is disposed within the combustion chamber 202. The inner container 10 is provided at the upper end of the burner housing 20 to close the upper end opening of the combustion chamber 202. The lower part of the liner 10 is provided with a lower opening 106, the lower opening 106 is communicated with the water storage cavity 101 and the combustion cavity 202, and the lower end of the heat exchange smoke pipe is arranged in the lower opening 106 in a sealing way so as to realize the connection between the combustion cavity 202 and the heat exchange smoke pipe and the separation between the combustion cavity 202 and the water storage cavity 101.

Therefore, the flue gas generated by the burner 30 can enter the heat exchange smoke tube and exchange heat with the heat exchange smoke tube, so that the temperature of the heat exchange smoke tube is increased, and heat exchange is performed with water in the water storage cavity 101, so that the water is heated. The temperature of the flue gas is reduced after heat exchange, and the flue gas can flow out of the outside from the upper end of the heat exchange flue pipe.

In the present invention, the heat exchanging pipe may include at least one of the heat exchanging branch pipe 41, the upper heat exchanging pipe 42, the lower heat exchanging pipe 43 and the main heat exchanging pipe 44, and the heat exchanging capacity may be improved by designing the structure of the heat exchanging pipe, and the volumetric heat exchanging device 100 according to the embodiment of the present invention will be described in detail with reference to some specific embodiments.

Fig. 1 and 2 show a positive displacement heat exchange device 100 according to a first embodiment of the invention. As shown in fig. 1 and 2, the positive displacement heat exchange device 100 according to the embodiment of the present invention includes a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a heat exchange branch pipe 41 and an upper heat exchange pipe 42.

Specifically, a combustion chamber 202 having an open upper end is defined in the burner housing 20, and the burner 30 is disposed in the combustion chamber 202. The inner container 10 is provided at the upper end of the burner housing 20 to close the upper end opening of the combustion chamber 202. The inner container 10 is internally limited with a water storage cavity 101, the upper part of the water storage cavity 101 is provided with an upper opening 105, the upper opening 105 is communicated with the water storage cavity 101 and the outside, the lower part of the water storage cavity 101 is provided with a lower opening 106, and the lower opening 106 is communicated with the water storage cavity 101 and a combustion cavity 202.

The upper heat exchange tube 42 may be sealingly connected within the upper opening 105. The lower openings 106 and the heat exchange branch pipes 41 include a plurality of, respectively, the plurality of heat exchange branch pipes 41 and the plurality of lower openings 106 are in one-to-one correspondence. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more, for example, three or four, etc. The plurality of heat exchange branch pipes 41 are arranged in the water storage cavity 101, the lower end of each heat exchange branch pipe 41 is respectively arranged in the corresponding lower opening 106 in a sealing mode, and the upper end of each heat exchange branch pipe 41 is connected with the lower end of the upper heat exchange pipe 42.

Thus, the flue gas formed by the combustion of the fuel gas such as the fuel gas by the burner 30 first enters the plurality of heat exchange branch pipes 41, then converges in the upper heat exchange pipe 42 communicating with the plurality of heat exchange branch pipes 41, and is discharged from the positive-displacement heat exchange device 100 through the upper heat exchange pipe 42. The arrangement of the plurality of heat exchange branch pipes 41 can enable the water at different positions in the inner container 10 to realize direct heat exchange with the heat exchange branch pipes 41, so that the water in the inner container 10 can exchange heat more uniformly, and meanwhile, the plurality of heat exchange branch pipes 41 enable the heat exchange area to be increased, thereby improving the heat exchange capacity of the positive-displacement heat exchange device 100, and improving the heat exchange efficiency and the heat exchange effect.

The connection method of the upper heat exchange tube 42 and the heat exchange branch tube 41 and the connection method of the heat exchange branch tube 41 and the liner 10 are not particularly limited, and for example, an adhesive method, a method of clamping a seal ring, or the like may be adopted. In some embodiments of the present invention, the upper heat exchange tube 42 and the heat exchange branch tube 41 are welded to each other, and the heat exchange branch tube 41 is also welded to the inner container 10. Therefore, the connecting device is convenient to connect, reliable in connection and good in sealing performance. In other embodiments of the present invention, the upper heat exchange tube 42 is integrally formed with the heat exchange manifold 41. Thus, the overall sealability of the heat exchange smoke tube can be improved, and the assembly efficiency of the positive-displacement heat exchange device 100 can be improved.

To further improve the uniformity of heat exchange, the plurality of heat exchange branches 41 may be uniformly spaced apart in the water storage chamber 101. For example, as shown in fig. 1 and 2, the plurality of heat exchanging branch pipes 41 may include a plurality of peripheral branch pipes 411, and the plurality of peripheral branch pipes 411 are distributed at intervals in the circumferential direction of the inner container 10. This can improve the uniformity of distribution of the heat exchange branch pipes 41 in the inner tube 10, and can further improve the heat exchange capacity. In some embodiments of the present invention, the plurality of peripheral branch pipes 411 are uniformly spaced apart along the circumferential direction of the liner 10.

As shown in fig. 1 and 2, the heat exchange branch pipe 41 can be extended into a straight pipe, so that the flue gas flows smoothly and the heat exchange performance is good. Alternatively, the upper portion of each of the peripheral branch pipes 411 may extend in an arc shape, as shown in fig. 1 and 2. Thereby, the flue gas flows more smoothly in the heat exchange branch pipe 41. As shown in fig. 1 and 2, the inner wall surface of the junction of the upper heat exchange tube 42 and the heat exchange branch tube 41 may smoothly transition. Therefore, the smoothness of the flow of the flue gas can be further improved.

With continued reference to fig. 1 and 2, the plurality of heat exchange branch pipes 41 may further include a middle branch pipe 412, the middle branch pipe 412 being located substantially in the middle of the water storage chamber 101, and the peripheral branch pipes 411 being disposed at intervals at the outer periphery of the middle branch pipe 412. That is, a plurality of peripheral branch pipes 411 are provided around the outer circumference of the middle branch pipe 412 and are disposed spaced apart from the middle branch pipe 412, and the plurality of peripheral branch pipes 411 are spaced apart from each other. Thereby, the uniformity of the distribution of the heat exchange branch pipes 41 can be further improved, and the effect and efficiency of heating water can be further improved.

Further, the middle branch pipe 412, the upper heat exchange pipe 42 and the water storage chamber 101 may be coaxially disposed. That is, the central axis of the middle branch pipe 412, the central axis of the upper heat exchange pipe 42 and the central axis of the water storage chamber 101 are disposed in line. Therefore, the efficiency and effect of heating water can be further improved.

As shown in fig. 1 and 2, the lower opening 106 and the upper opening 105 may be provided with flanges 102, respectively, and the lower end of the middle branch pipe 412 and the upper heat exchange pipe 42 are connected to the corresponding flanges 102, respectively, specifically, the lower end of the middle branch pipe 412 is connected to the flange 102 at the lower opening 106, and the upper heat exchange pipe 42 is connected to the flange 102 at the upper opening 105. Thereby, the connection reliability and the sealing property of the middle branch pipe 412 and the upper heat exchange pipe 42 to the inner container 10 can be improved.

Alternatively, the bottom wall of the inner container 10 may be formed in an upwardly concave arc shape, and as shown in fig. 1 and 2, the lower opening 106 may be provided on the bottom wall of the inner container 10. Therefore, the arc bottom wall can guide the flue gas, so that the flue gas is easier to enter the heat exchange branch pipe 41, and the heating effect on water is improved.

The positive displacement heat exchange device 100 according to the embodiment of the present invention may further include a housing 50, and as shown in fig. 1 and 2, the inner container 10 and the burner housing 20 may be provided inside the housing 50 to be protected from damage by the housing 50. An outer outlet 501 may be provided at the upper portion of the housing 50, and the outer outlet 501 communicates the upper heat exchange tube 42 with the outside, so that the flue gas in the upper heat exchange tube 42 may flow out of the housing 50. Further, the upper heat exchange tube 42 may extend from within the outer housing 501 and be sealingly connected to the outer housing 50. Therefore, the upper heat exchange tube 42 is convenient to connect, reliable in connection with the shell 50 and good in sealing performance, and has good air outlet performance, so that smoke can be prevented from entering and remaining in the shell 50.

Alternatively, the outer case 50 and the burner case 20 may be separate pieces, and the burner case 20 may be connected to the outer case 50. Of course, in some embodiments of the present invention, the burner housing 20 and the outer housing 50 may be formed as a single piece, and in particular, a portion of the outer housing 50 may be used as the burner housing 20, thereby eliminating the need for a separate burner housing 20 and reducing costs.

As shown in fig. 2, the positive displacement heat exchange device 100 according to the embodiment of the present invention may further include a temperature controller 110, and the temperature controller 110 protrudes into the lower portion of the water storage chamber 101 to detect the temperature in the water storage chamber 101. When the water level in the water storage chamber 101 reaches the thermostat 110, the thermostat 110 may detect the temperature of the water. The temperature controller 110 is connected with the burner 30, when the temperature of water detected by the temperature controller 110 exceeds a preset temperature, the burner 30 can be controlled to stop working, and when the temperature of water detected by the temperature controller 110 is lower than the preset temperature, the burner 30 can continue working so as to continuously provide smoke into the heat exchange smoke tube, thereby realizing heating of water, and having good control and higher safety.

Fig. 3 and 4 show a positive displacement heat exchange device 100 according to a second embodiment of the invention. As shown in fig. 3 and 4, the positive displacement heat exchange device 100 according to the embodiment of the present invention includes a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a heat exchange branch pipe 41 and a lower heat exchange pipe 43.

The structure in this embodiment has the same as that in the first embodiment, and also differs therefrom, and the same reference numerals are given to the same or similar components, and reference is specifically made to the foregoing description, and will not be described in detail herein. The main differences are described in detail below.

Referring to fig. 3 and 4, in the present embodiment, the upper opening 105 of the liner 10 includes a plurality of heat exchanging branch pipes 41, which are disposed in the water storage chamber 101, and the plurality of heat exchanging branch pipes correspond to the plurality of upper openings 105 one by one, and the upper end of each heat exchanging branch pipe 41 is disposed in the corresponding upper opening 105 in a sealing manner. The lower opening 106 on the liner 10 is one, the lower heat exchange tube 43 is connected in the lower opening 106 in a sealing way, and the upper ends of the lower heat exchange tube 43 are connected with the lower ends of the plurality of heat exchange branch tubes 41.

Thus, the flue gas generated by the combustion of the fuel gas such as the fuel gas by the burner 30 first enters the lower heat exchanging pipe 43, then is split into the plurality of heat exchanging branch pipes 41, and is discharged from the positive-displacement heat exchanging device 100 through the plurality of heat exchanging branch pipes 41. The arrangement of the plurality of heat exchange branch pipes 41 can enable the water at different positions in the inner container 10 to directly exchange heat with the heat exchange branch pipes 41, so that the water in the inner container 10 can exchange heat more uniformly, and meanwhile, the plurality of heat exchange branch pipes 41 enable the heat exchange area to be increased, so that the heat exchange capacity of the positive-displacement heat exchange device 100 is increased, and the heat exchange efficiency and the heat exchange effect are improved.

Alternatively, the lower heat exchange tube 43 and the heat exchange branch tube 41 may be connected by bonding or welding. The heat exchange branch pipe 41 and the inner container 10 can be connected in a sealing way by adopting bonding or welding and the like. Alternatively, the inner wall surface of the junction of the lower heat exchange tube 43 and the heat exchange branch tube 41 may be smoothly transited to promote the smoothness of the flow of the flue gas.

As shown in fig. 3 and 4, the heat exchange branch pipe 41 in the present embodiment has a structure substantially similar to that in the first embodiment, and the plurality of heat exchange branch pipes 41 may include a plurality of peripheral branch pipes 411 and a central branch pipe 412, and reference is made to the foregoing related description. A flange 102 may be provided at the lower opening 106, and the lower heat exchange tube 43 may be connected to the flange 102. Further, the middle branch pipe 412, the upper heat exchange pipe 42 and the inner container 10 may be coaxially disposed to further improve the performance of heating water. Alternatively, the lower portion of each of the peripheral branch pipes 411 may be extended in an arc shape to improve the smoothness of the flow of the flue gas and to facilitate the connection of the peripheral heat exchange pipes and the lower heat exchange pipes 43.

As shown in fig. 3 and 4, the volumetric heat exchange device 100 according to an embodiment of the present invention may further include a housing 50, and the upper portion of the housing 50 may be provided with a plurality of outer outlets 501, and a plurality of heat exchange branch pipes 41 may be in one-to-one correspondence with the plurality of outer outlets 501, and each heat exchange branch pipe 41 may protrude from the corresponding outer outlet 501 and be hermetically connected with the housing 50. Therefore, the upper heat exchange tube 42 is convenient to connect, reliable in connection with the shell 50 and good in sealing performance, and has good air outlet performance, so that smoke can be prevented from entering and remaining in the shell 50.

Fig. 5 and 6 show a volumetric heat exchange device 100 according to a third embodiment of the invention. As shown in fig. 5 and 6, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a heat exchange branch pipe 41, an upper heat exchange pipe 42, and a lower heat exchange pipe 43.

The structure in this embodiment is the same as that in the first embodiment and the second embodiment, and differs therefrom, and the same reference numerals are used for the same or similar components, and reference is specifically made to the foregoing description, and the main differences will not be described in detail.

As shown in fig. 5 and 6, the structure of the present embodiment can be seen as a combination of the first and second embodiments, and the heat exchanging pipe may include a heat exchanging branch pipe 41, an upper heat exchanging pipe 42, and a lower heat exchanging pipe 43. The heat exchange branch pipe 41 comprises a plurality of water storage cavities 101 which are all arranged in the liner 10, the upper heat exchange pipe 42 is connected to the upper end of the heat exchange branch pipe 41, and the lower heat exchange pipe 43 is connected to the lower end of the heat exchange branch pipe 41. Specifically, the upper opening 105 and the lower opening 106 on the liner 10 are respectively one, the lower heat exchange tube 43 is connected in the lower opening 106 in a sealing manner, the upper ends of the lower heat exchange tube 43 are connected with the lower ends of the plurality of heat exchange branch pipes 41, the upper heat exchange tube 42 is connected in the upper opening 105 in a sealing manner, and the lower ends of the upper heat exchange tube 42 are connected with the upper ends of the plurality of heat exchange branch pipes 41.

Thus, the flue gas formed by the combustion of the fuel gas such as the fuel gas by the burner 30 first enters the lower heat exchanging pipe 43, then is split into the plurality of heat exchanging branch pipes 41, passes through the plurality of heat exchanging branch pipes 41, then is collected into the upper heat exchanging pipe 42, and is discharged out of the positive displacement heat exchanging device 100 through the upper heat exchanging pipe 42. The arrangement of the plurality of heat exchange branch pipes 41 can enable water at different positions in the inner container 10 to realize direct heat exchange with the heat exchange branch pipes 41, so that the water in the inner container 10 can exchange heat more uniformly, and meanwhile, the plurality of heat exchange branch pipes 41 enable the heat exchange area to be increased, thereby improving the heat exchange capacity, the heat exchange efficiency and the heat exchange effect.

Alternatively, the inner wall surface of the junction of the lower heat exchange tube 43 and the heat exchange branch tube 41 may be smoothly transited, and the junction of the upper heat exchange tube 42 and the heat exchange branch tube 41 may be smoothly transited. Alternatively, the lower heat exchange tube 43 and the heat exchange branch tube 41 may be in sealing connection by welding or bonding, and the upper heat exchange tube 42 and the heat exchange branch tube 41 may be in sealing connection by welding or bonding.

Similar to the foregoing, in the present embodiment, the plurality of heat exchange branch pipes 41 may include a plurality of peripheral branch pipes 411 and a central branch pipe 412, and reference is made to the foregoing related description. Optionally, the middle branch pipe 412, the upper heat exchange pipe 42, the lower heat exchange pipe 43 and the water storage chamber 101 are coaxially arranged to further improve the performance of heating water. Alternatively, the upper and lower portions of each heat exchange branch pipe 41 may be respectively extended in an arc shape to improve smoothness of flow of flue gas and to facilitate connection with the upper and lower heat exchange pipes 42 and 43.

As shown in fig. 5 and 6, the positive displacement heat exchange device 100 according to the embodiment of the present invention may further include a housing 50, and an outer outlet 501 is provided at an upper portion of the housing 50, and the outer outlet 501 communicates with the upper heat exchange tube 42 and the outside, so that the flue gas in the upper heat exchange tube 42 may flow out of the housing 50. Further, the upper heat exchange tube 42 may extend from within the outer housing 501 and be sealingly connected to the outer housing 50. Therefore, the upper heat exchange tube 42 is convenient to connect, reliable in connection with the shell 50 and good in sealing performance, and has good air outlet performance, so that smoke can be prevented from entering and remaining in the shell 50.

Fig. 7 and 8 show a positive displacement heat exchange device 100 according to a fourth embodiment of the invention. As shown in fig. 7 and 8, the positive displacement heat exchange device 100 according to the embodiment of the present invention includes a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a heat exchange branch pipe 41 and a main heat exchange pipe 44.

Specifically, the inner container 10, the burner housing 20, the burner 30, the thermostat 110, the outer housing 50, and the like in this embodiment are substantially similar to those of the previous embodiments, and will not be described in detail herein. The foregoing embodiments of the heat exchange branch pipe 41 in this embodiment are different, and the heat exchange branch pipe 41 and the main heat exchange pipe 44 will be mainly described in detail below.

Referring to fig. 7 and 8, the main heat exchange tube 44 is provided in the water storage chamber 101 of the inner container 10, the upper end of the main heat exchange tube 44 is hermetically provided in the upper opening 105 of the inner container 10, and the lower end of the main heat exchange tube 44 is hermetically provided in the lower opening 106 of the inner container 10. The heat exchange branch pipe 41 is provided in the water storage chamber 101, the lower end of the heat exchange branch pipe 41 communicates with the lower portion of the main heat exchange pipe 44, the upper end of the heat exchange branch pipe 41 communicates with the upper portion of the main heat exchange pipe 44, and at least a portion of the heat exchange branch pipe 41 is formed in a spiral shape surrounding the main heat exchange pipe 44.

Therefore, the length of the heat exchange branch pipe 41 in the liner 10 is longer, the contact area between the flue gas and the heat exchange branch pipe 41 and the contact area between the heat exchange branch pipe 41 and water can be increased, the heat exchange capacity of the positive displacement heat exchange device 100 is increased, and the efficiency and effect of heating water are improved.

As shown in fig. 7 and 8, the heat exchange manifold 41 may be integrally formed in a spiral shape. Therefore, the heat exchange branch pipes 41 are distributed more uniformly in the inner container 10, so that water in the inner container 10 can be heated more uniformly, the contact area between the heat exchange branch pipes 41 and water and the contact area between the heat exchange branch pipes 41 and the flue gas are larger, heat of the flue gas can be transferred to the water more fully, and the heating effect and the heating efficiency of the water are further improved.

Alternatively, as shown in fig. 7 and 8, the main heat exchange tube 44 may include a middle tube section 441, an upper tube section 442, and a lower tube section 443. The middle tube section 441 may be formed as a straight tube, alternatively, the middle tube section 441 may be disposed extending in a vertical direction. An upper tube section 442 may be provided at an upper end of the middle tube section 441 and connected to an upper end of the heat exchange manifold 41, the upper tube section 442 being sealingly disposed within the upper opening 105. A lower pipe section 443 is provided at the lower end of the middle pipe section 441 and is connected to the lower end of the heat exchange branch pipe 41, and the lower pipe section 443 is sealingly disposed within the lower opening 106.

The flow area of the lower tube section 443 is larger than the flow area of the middle tube section 441, and the flow area of the upper tube section 442 is also larger than the flow area of the middle tube section 441. Thereby, the flue gas can more easily enter and flow out of the main heat exchange tube 44, and the connection of the heat exchange branch tube 41 and the main heat exchange tube 44 is facilitated.

In some embodiments of the present invention, the primary heat exchange tube 44 is a single piece. That is, the middle tube section 441, the upper tube section 442, and the lower tube section 443 can be integrally formed. Thus, not only the overall sealability and strength of the main heat exchange tube 44 can be improved, but also the assembly efficiency of the positive-displacement heat exchange device 100 can be improved.

Alternatively, the main heat exchange pipe 44, the water storage chamber 101 and the heat exchange branch pipe 41 may be coaxially disposed. That is, the central axis of the main heat exchange pipe 44, the central axis of the water storage chamber 101, and the rotation axis of the heat exchange branch pipe 41 are disposed in line. Thereby the processing time of the product is reduced, the efficiency and effect of heating water can be further improved.

As shown in fig. 7 and 8, the main heat exchange tube 44 may be sealingly connected with the housing 50 and an upper end of the main heat exchange tube 44 may protrude from within an outer outlet 501 of the housing 50. Therefore, the main heat exchange tube 44 is convenient to connect, reliable in connection with the shell 50, good in sealing performance and good in air outlet, and smoke can be prevented from entering and remaining in the shell 50.

The connection method of the main heat exchange tube 44 and the heat exchange branch tube 41 and the connection method of the main heat exchange tube 44 and the inner tube 10 are not particularly limited, and for example, an adhesive method, a method of clamping a seal ring, or the like may be adopted. In some embodiments of the present invention, the main heat exchange tube 44 and the heat exchange branch tube 41 are welded, and the main heat exchange tube 44 is also welded to the inner container 10. Therefore, the connecting device is convenient to connect, reliable in connection and good in sealing performance. In other embodiments of the present invention, the main heat exchange tube 44 is integrally formed with the heat exchange manifold 41. Thus, the overall sealability of the heat exchange smoke tube can be improved, and the assembly efficiency of the positive-displacement heat exchange device 100 can be improved.

As shown in fig. 7 and 8, the lower opening 106 and the upper opening 105 may be provided with flanges 102, respectively, and the upper end and the lower end of the main heat exchange tube 44 may be connected with the corresponding flanges 102, respectively, to improve the connection effect. Alternatively, the inner wall surface of the junction of the main heat exchange tube 44 and the heat exchange branch tube 41 may be smoothly transited to improve the smoothness of the flow of the flue gas.

The above describes some embodiments of the positive displacement heat exchange device 100 having heat exchange branches 41, in which embodiments the positive displacement heat exchange device 100 further comprises a main heat exchange tube 44 or at least one of an upper heat exchange tube 42 and a lower heat exchange tube 43. Of course, in the embodiment of the present invention, the positive displacement heat exchange device 100 may further include only the plurality of heat exchange branch pipes 41, and not include heat exchange pipes of other structures, and in this case, for convenience of connection, the upper portion of the inner container 10 may be provided with a plurality of upper openings 105 to connect with the upper ends of the plurality of heat exchange branch pipes 41, and the lower portion of the inner container 10 may be provided with a plurality of lower openings 106 to connect with the lower ends of the plurality of heat exchange branch pipes 41, so that heat exchange capability is better.

Furthermore, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include only the main heat exchange tube 44, and not the heat exchange branch tube 41, and the positive displacement heat exchange device 100 including the main heat exchange tube 44 will be described in detail with reference to the specific embodiment. It should be noted that, although the schematic diagrams of some embodiments do not include the heat exchange branch pipe 41, those skilled in the art will understand that, to further improve the heat exchange effect, the straight pipe-shaped or spiral heat exchange branch pipe 41 in some embodiments may be combined into the embodiments described below.

Fig. 9 to 11 show a volumetric heat exchange device 100 according to a fifth embodiment of the invention. As shown in fig. 9 to 11, the positive displacement heat exchange device 100 according to the embodiment of the present invention includes a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a main heat exchange pipe 44.

Specifically, the burner housing 20 defines a combustion chamber 202 therein, the upper end of which is open, and the burner 30 is disposed within the combustion chamber 202. The inner container 10 is provided at the upper end of the burner housing 20 to close the upper end opening of the combustion chamber 202. The inner container 10 can be internally limited with a water storage cavity 101, the upper part of the inner container 10 is provided with an upper opening 105, the upper opening 105 communicates the water storage chamber 101 with the outside. The lower part of the liner 10 is provided with a lower opening 106, and the lower opening 106 is communicated with the water storage cavity 101 and the combustion cavity 202.

The main heat exchange tube 44 may be disposed in the water storage chamber 101, with the upper end of the main heat exchange tube 44 being sealingly disposed in the upper opening 105 and the lower end of the main heat exchange tube 44 being sealingly disposed in the lower opening 106. Thus, the combustion chamber 202 may communicate with the lower end opening of the main heat exchange pipe 44 and be blocked from the water storage chamber 101, and the upper end opening of the main heat exchange pipe 44 may communicate with the outside.

Therefore, the burner 30 can burn fuel gas such as fuel gas to generate smoke, the smoke carrying heat can enter the main heat exchange tube 44 through the combustion chamber 202, the smoke exchanges heat with the main heat exchange tube 44 in the main heat exchange tube 44, the heat can be transferred to the main heat exchange tube 44, the main heat exchange tube 44 can transfer the received heat to water in the water storage chamber 101 again, heating of the water is achieved, and the smoke with reduced temperature can flow out of the main heat exchange tube 44 and flow to the outside.

The inventors of the present application have found that when the flue gas contacts the main heat exchange tube 44 having a low temperature, condensed water is formed on the inner wall surface of the main heat exchange tube 44, and this phenomenon is more remarkable particularly in the case where the ambient temperature is low or in the initial stage of the operation of the positive-displacement heat exchange device 100. The condensed water flows downward along the inner wall surface of the main heat exchange pipe 44 by gravity, and when the burner 30 is positioned under the position facing the inner wall surface of the main heat exchange pipe 44, the condensed water drops onto the burner 30, and the combustion condition is deteriorated.

In order to effectively solve this problem, as shown in fig. 9 to 11, the volumetric heat exchange device 100 of the present embodiment may further include a drain 70, and the drain 70 may be disposed in the water storage chamber 101 and may be connected to the main heat exchange tube 44. The drain 70 is provided with a water receiving portion 701, and the water receiving portion 701 is adapted to receive condensed water flowing down from the inner wall surface of the main heat exchange tube 44, and the drain outlet 703 of the drain 70 extends outward beyond the burner 30. Here, outward may be understood to be in a direction away from the combustion chamber 202 or in a direction away from the combustion chamber 202.

Therefore, when the water received by the water receiving part 701 flows out from the water outlet 703, the condensed water does not flow onto the burner 30, so that the influence of the condensed water on the burner 30 is effectively avoided, the burner 30 has good combustion effect, and the purpose of stable combustion can be achieved.

According to the positive displacement heat exchange device 100 of the embodiment of the invention, the drain member 70 capable of receiving condensed water flowing down the inner wall surface of the main heat exchange tube 44 is arranged, and the drain outlet 703 of the drain member 70 is arranged to extend outwards beyond the burner 30, so that condensed water can be effectively prevented from flowing to the burner 30, the purpose of stable combustion is achieved, the combustion is more sufficient, the heat release is more, and the heating effect can be improved.

The drain 70 may be connected to the inner container 10 in addition to the main heat exchange tube 44, for example, when the lower end of the main heat exchange tube 44 does not protrude from the lower opening 106, the drain 70 may be connected to the peripheral edge of the lower opening 106, and the water receiving portion 701 may serve to receive the condensed water flowing downward.

In the embodiment shown in fig. 9 to 12, the water receiving part 701 may be formed as a water receiving groove formed in a ring shape. Therefore, the water flowing down from the inner peripheral wall of the main heat exchange tube 44 can be received by the water receiving groove, a better water receiving effect can be realized, and meanwhile, the received water can be prevented from flowing anywhere. Of course, in the present invention, the water receiving part 701 is not limited to be formed as a water receiving groove, and may have other structures, for example, the water receiving part 701 may be formed as a water receiving slope extending obliquely downward and outward, and the like, which will be understood by those skilled in the art, and will not be illustrated in detail herein.

Further, as shown in fig. 9 to 11, a drain 702 may be further disposed on the drain member 70, where the drain 702 is communicated with the water receiving tank to receive condensed water in the water receiving tank, and an outlet of the drain 702 is the drain 703, and water in the water receiving tank may flow from the drain 703 through the drain 702, so that the water draining effect is better. Alternatively, the drain 702 may extend radially outward of the combustion chamber 202.

Further, the drainage channel 702 may include a plurality of drainage channels 702, and the plurality of drainage channels 702 may be spaced apart along the circumference of the water receiving tank. Therefore, the water in the water receiving tank can flow out faster, the condensed water is prevented from overflowing due to excessive accumulation in the water receiving tank, and the condensed water overflows from the edge of the water receiving tank to drop onto the burner 30, so that the influence of the condensed water on the burner 30 can be avoided more effectively.

As shown in fig. 9-12, the drain 70 may include a water receiving ring 71 and a drain arm 72. The water receiving ring 71 is connected to the main heat exchange tube 44. In some embodiments of the invention, not shown, the water ring 71 may also be connected to the liner 10. The water receiving groove may be provided in the water receiving ring 71, the drain arm 72 may extend obliquely downward and outward, and the drain arm 72 may define a drain 702 therein. Thus, the drain 702 may be formed in a generally diagonally downward extending configuration, with condensate more easily drained through the drain 702, and the drain 70 of this configuration is simpler in construction, less material, less space, and less interference with the flow of flue gas.

Further, the drain arm 72 may be formed as a drain pipe. Thus, the drain 702 is sealed well, and when the amount of condensate is large, the condensate can be prevented from flowing down the drain 702 in advance before flowing to the drain 703 of the drain 702, and flowing to the burner 30, and the influence of the condensate on the burner 30 can be further effectively avoided.

It should be understood that the structure of the drain 70 described above is only some embodiments of the present invention, and the structure of the drain 70 in the present invention is not limited thereto, but may be other structures, for example, the drain 70 may be formed in a plate-like structure, etc., as will be understood by those skilled in the art, and is not listed herein.

Alternatively, the main heat exchange tube 44 and the water storage chamber 101 may be coaxially disposed. Therefore, the main heat exchange tube 44 can transfer heat to the water in the middle of the water storage cavity 101 preferentially, and the heat transferred to the water can be gradually transferred outwards, so that the heat absorption property is good. The main heat exchange tube 44 may be formed as a straight tube having a constant flow area, or may be formed as a variable diameter tube having a variable flow area, and may be flexibly arranged according to the specific circumstances. In addition, when the main heat exchange tube 44 in the present embodiment is used in combination with the heat exchange branch tube 41 in the foregoing embodiment, the main heat exchange tube 44 may be used as the intermediate branch tube 412, or as a combination of the intermediate branch tube 412 with at least one of the upper heat exchange tube 42 and the lower heat exchange tube 43.

As shown in fig. 9 and 10, in this embodiment, the volumetric heat exchange device 100 may further include a heat exchange spoiler 60, where the heat exchange spoiler 60 is disposed in the main heat exchange tube 44 and connected to the main heat exchange tube 44, the heat exchange spoiler 60 may play a role in spoiler the flue gas flowing into the main heat exchange tube 44, increasing the contact time between the flue gas and the main heat exchange tube 44, and exchanging heat more fully, and meanwhile, the flue gas may also exchange heat with the heat exchange spoiler 60, and the heat exchange spoiler 60 may transfer the received heat to the main heat exchange tube 44, increasing the heat of the main heat exchange tube 44, improving the heating effect and efficiency of the water, and enhancing the heat exchange capability of the volumetric heat exchange device 100.

It will be appreciated by those skilled in the art that the provision of the heat exchange spoiler 60 capable of spoiler and enhancing heat exchange capability within the main heat exchange tube 44 is also described by way of example only, and that other spoiler heat exchange structures capable of spoiler flue gas and enhancing heat exchange capability, such as heat exchange spoiler protrusions, may be provided within the main heat exchange tube 44. That is, the heat exchange spoiler may be disposed in the main heat exchange tube 44 of the positive displacement heat exchange device 100 according to an embodiment of the present invention to enhance heat exchange capability.

The relevant description of the heat exchange spoiler will be described in detail below and will not be further described herein. In addition, the structures of the inner container 10, the burner housing 20, and the burner 30 in the present embodiment are the same as or similar to those in the previous embodiment, and the same or similar structures will not be described in detail herein, and specific reference is made thereto.

Fig. 12 and 13 show a volumetric heat exchange device 100 according to a sixth embodiment of the invention. As shown in fig. 12 and 13, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a main heat exchange pipe 44. Depending on the heat exchange requirements, heat exchange spoilers, such as heat exchange spoilers 60, may optionally be provided within the primary heat exchange tube 44 to enhance heat exchange. The relevant contents of the heat exchanging turbulator will be described in detail below and will not be further described herein.

The structure in this embodiment is the same as that in the fifth embodiment, and differs therefrom, and the same reference numerals are used for the same or similar components, and reference is specifically made to the foregoing description, and the main differences will not be described in detail herein.

As described above, in some cases, condensed water is formed on the inner wall surface of the main heat exchange tube 44, and when the amount of condensed water is large, the condensed water flows downward by gravity; when the amount of the condensed water is small, the gravity applied to the condensed water is small, so that the condensed water adheres to the inner wall surface of the main heat exchange tube 44, and a layer of water curtain is formed on the inner wall surface of the main heat exchange tube 44, which not only damages the main heat exchange tube 44, for example, corrodes the main heat exchange tube 44, but also blocks the heat exchange between the flue gas and the main heat exchange tube 44, and the heat in the flue gas cannot be fully absorbed by the main heat exchange tube 44, so that the heat exchange efficiency is low, and the heating effect on water is affected.

In this embodiment, at least a portion of the main heat exchange tubes 44 may be formed as reduced diameter tubes whose flow area decreases in the direction of flow of the flue gas. Here, the flow area of the reducer is generally understood to be the cross-sectional area (or radial cross-sectional area) of the interior of the reducer. When the main heat exchange tube 44 is installed in the water storage cavity 101, at least a part of the inner wall surface of the necking tube can incline downwards, so that the contact area between the condensed water and the inner wall surface of the main heat exchange tube 44 is small, the condensed water flows downwards more easily, the adhesion on the inner wall surface of the main heat exchange tube 44 is reduced, the corrosion influence of the condensed water on the main heat exchange tube 44 can be reduced, meanwhile, the probability of forming a water curtain on the inner wall surface of the main heat exchange tube 44 is reduced, the influence of the condensed water on heat exchange can be reduced, and the heat exchange efficiency is improved.

Meanwhile, the necking pipe is formed into a structure with a large upper part and a small lower part, so that the flow speed of the flue gas at the lower part is slower, the flow speed of the flue gas at the upper part is faster, the contact time of the flue gas with relatively high carrying heat and the main heat exchange pipe 44 is longer, the heat absorption is more facilitated, and meanwhile, the flow speed of the flue gas with relatively low carrying heat flows out of the outside more easily, and the heat exchange is further facilitated.

According to the positive-displacement heat exchange device 100 provided by the embodiment of the invention, at least one part of the main heat exchange tube 44 is formed into the diameter-reduced tube, so that the formation of a water curtain on the main heat exchange tube 44 can be weakened, the heat exchange efficiency can be improved, the heating efficiency and effect on water can be improved, the heat utilization rate can be improved, meanwhile, the damage of condensed water to the main heat exchange tube 44 can be reduced, the service life of the positive-displacement heat exchange device 100 is longer, and the performance is more reliable.

In some embodiments of the present invention, a neck tube may be formed at an upper portion of the main heat exchange tube 44. Therefore, the water curtain formed on the upper part of the main heat exchange tube 44 can be reduced, and at the same time, the condensed water can be combined with the condensed water attached on the inner wall surface of the main heat exchange tube 44 along the way when flowing downwards, the condensed water on the lower part can be driven to flow downwards, and the water curtain on the inner wall surface of the lower part of the main heat exchange tube 44 can be reduced.

As shown in fig. 12 and 13, the main heat exchange tube 44 may be integrally formed as a reduced diameter tube. That is, the flow area of the main heat exchange tube 44 decreases in the flow direction of the flue gas, i.e., in the bottom-up direction. Thus, the inclined portion of the inner wall surface of the main heat exchange tube 44 can be increased, the formation of the water curtain can be further reduced, and the heat exchange efficiency and effect can be improved.

Alternatively, the inner peripheral surface of the reducing pipe may be integrally formed as a slope extending obliquely inward and upward. That is, in the circumferential direction of the reducing pipe, each position of the inner wall surface is formed as an inclined surface extending obliquely upward and inward in the flow direction of the flue gas. Therefore, the whole inner wall surface of the necking pipe is not easy to form a water curtain, and the flue gas flows more uniformly and smoothly, so that the heat exchange efficiency and effect can be further improved.

In the present invention, the radial cross section of the main heat exchange tube 44 is not particularly limited, and may be various shapes, for example, a circular ring shape, a polygonal ring shape, or a special shape. When the radial section of the main heat exchange tube 44 is formed in a circular shape, the heat exchange tube is convenient to manufacture, attractive in appearance, and capable of enabling the flue gas to flow more uniformly and smoothly, and further improving the heat exchange efficiency.

Fig. 14 to 17 show a positive displacement heat exchange device 100 according to a seventh embodiment of the invention. As shown in fig. 14 to 17, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a main heat exchange pipe 44. Depending on the heat exchange requirements, heat exchange spoilers, such as heat exchange spoilers 60, may optionally be provided within the primary heat exchange tube 44 to enhance heat exchange. The relevant contents of the heat exchanging turbulator will be described in detail below and will not be further described herein.

Referring to fig. 14 to 17, in the present embodiment, a heat exchanging channel 103 may be provided on a sidewall of the inner container 10, and both ends of the heat exchanging channel 103 extend to an upper portion and a lower portion of the inner container 10, respectively, and communicate with the outside and the combustion chamber 202, respectively. In other words, the upper end of the heat exchanging channel 103 extends to the upper portion of the inner container 10 and communicates with the outside, and the lower portion of the heat exchanging channel 103 extends to the lower portion of the inner container 10 and communicates with the combustion chamber 202.

Therefore, the flue gas generated by the burner 30 can enter the main heat exchange tube 44 and enter the heat exchange channel 103 through the combustion chamber 202, the flue gas can exchange heat with the liner 10, the liner 10 can further exchange heat with water in the water storage chamber 101, so that heat of the flue gas can be transferred to the water through the liner 10, at the moment, the water in the water storage chamber 101 can be heated from the inner side and the outer side simultaneously, the water is heated more uniformly, and the heating is faster. Meanwhile, the side wall of the inner container 10 can exchange heat with the flue gas, so that the heat exchange area is enlarged, and the heat exchange capacity of the positive-displacement heat exchange device 100 is increased.

According to the positive-displacement heat exchange device 100 of the embodiment of the invention, the main heat exchange pipe 44 communicated with the combustion chamber 202 is arranged in the water storage chamber 101, and the heat exchange channel 103 communicated with the combustion chamber 202 is arranged on the side wall of the liner 10, so that the flue gas carrying heat in the combustion chamber 202 can flow out of the outside through the main heat exchange pipe 44 and also flow out of the outside through the heat exchange channel 103, and therefore, the flue gas can not only transfer heat into water through the main heat exchange pipe 44, but also transfer heat into water through the liner 10, the heat exchange area is increased, the heating of water is more uniform, the heating speed is higher, and the heat utilization is more sufficient.

Alternatively, the heat exchange channel 103 may be disposed around the combustion chamber 202. Therefore, the peripheral walls of the inner container 10 can be in direct contact with the flue gas for heat exchange, the heat exchange area can be further increased, and water can be heated more quickly and uniformly. For example, in some specific examples of the invention, the heat exchange channel 103 is configured as a spiral disposed about the combustion chamber 202. For another example, in other specific examples of the invention, the heat exchange channel 103 is configured as an annulus disposed about the combustion chamber 202. These structures can all promote the heating water function to heat transfer channel 103 can also play outer heat retaining effect, can reduce the heat and outwards scatter and disappear.

As shown in fig. 14 to 17, the volumetric heat exchange device 100 according to the embodiment of the invention may further include a housing 50, the inner container 10 and the burner housing 20 may be disposed in the housing 50, an outer outlet 501 may be disposed at an upper portion of the housing 50, and the outer outlet 501 may be connected to the main heat exchange tube 44 and the outside, and may also be connected to the heat exchange channel 103 and the outside, so that the flue gas of the main heat exchange tube 44 and the flue gas in the heat exchange channel 103 may be exhausted out of the housing 50 through the outer outlet 501, and the exhaust performance is good.

When the positive displacement heat exchange device 100 has the housing 50, as an alternative embodiment, the heat exchange passage 103 may be defined by an inner wall surface of the housing 50 and an outer wall surface of the inner container 10, as shown in fig. 14 to 16. Therefore, the inner container 10 can be reduced from being damaged without digging a channel on the side wall of the inner container 10, the inner container 10 has higher strength, and the manufacturing is more convenient.

Of course, the formation of the heat exchange channel 103 is not limited thereto, and for example, the heat exchange channel 103 may be provided inside the side wall of the liner 10, and in this case, the liner 10 does not need to be matched with the housing 50, so that flexibility is enhanced. Further, the heat exchange passage 103 is not limited to be defined only by the inner wall surface of the outer case 50 and the outer wall surface of the inner case 10, and a part of the heat exchange passage 103 may be defined by the outer case 50 and the burner housing 20. That is, in the present invention, the heat exchange passage 103 may be defined at least by the inner wall surface of the outer case 50 and the outer wall surface of the inner case 10.

For example, as shown in fig. 14 to 16, when the lower portion of the heat exchanging channel 103 extends to the burner housing 20, the lower portion of the heat exchanging channel 103 may be defined by the outer wall surface of the burner housing 20 and the inner wall surface of the outer case 50, and at this time, a vent 201 communicating the combustion chamber 202 and the heat exchanging channel 103 may be provided on the sidewall of the burner housing 20 so that the smoke may enter into the heat exchanging channel 103 through the vent 201. At this time, the length of the heat exchange channel 103 is longer, so that the heat exchange time and heat exchange area of the flue gas can be increased, and the heat exchange capability of the positive displacement heat exchange device 100 is further improved.

The number of the vents 201 is not particularly limited, and may be one or more. When the vent 201 includes a plurality of vents 201, the plurality of vents 201 may be disposed at intervals along the circumference of the burner housing 20. Therefore, the flue gas in the combustion chamber 202 can enter the heat exchange channel 103 more quickly and uniformly, the heat exchange capacity of the positive-displacement heat exchange device 100 can be further improved, and meanwhile, the timely outflow of the flue gas can also promote the combustion of the burner 30. The shape of the vent 201 is not particularly limited, and the vent 201 may alternatively be formed as a circular hole, a polygonal hole, a shaped hole, or the like.

In the present embodiment, as shown in fig. 14 to 17, the outer case 50 may include an inner case 51 and an outer case 52, the outer case 52 may be provided at an outer side of the inner case 51, the outer case 52 may be provided with a mounting port 521, an upper end of the inner case 51 may be sealingly coupled within the mounting port 521, and an outer outlet 501 may be provided at an upper end of the inner case 51, an outer circumferential surface of an upper end of the main heat exchange tube 44 being spaced apart from an inner circumferential wall surface of the outer opening, as shown in fig. 17.

Therefore, the outer outlet 501 is not completely sealed by the main heat exchange tube 44, a gap communicated with the heat exchange channel 103 can be formed, so that the flue gas of the heat exchange channel 103 can flow out of the outer shell 50, meanwhile, the flue gas in the main heat exchange tube 44 can flow out of the outer shell 50 through the upper end opening of the main heat exchange tube, the flue gas is discharged more smoothly, and the outer shell 52 and the inner shell 51 are arranged in a sealing manner, so that the flue gas can be prevented from entering between the inner shell 51 and the outer shell 52, and the smoke accumulation in the outer shell 50 is avoided.

Further, as shown in fig. 17, the upper end of the inner housing 51 may extend into the mounting opening 521, and the outer peripheral surface of the upper end of the inner housing 51 is connected with the outer housing 52 in a sealing manner, which may be a welding manner, an adhesive manner, or the like. The outer outlet 501 may be provided on a portion of the inner housing 51 protruding into the mounting port 521, and the upper end of the main heat exchange tube 44 may be clearance fitted into the outer outlet 501. Thus, the upper ends of the main heat exchange tubes 44 and the upper end of the housing 50 can form a sleeve-like structure, and the connection effect is good.

In order to improve the heat preservation effect, a heat preservation layer can be arranged between the inner shell 51 and the outer shell 52, and the heat preservation layer can reduce the outward dissipation of heat in the inner container 10, so that hot water in the inner container 10 is not easy to cool. The heat preservation layer is not particularly limited, and different materials can be flexibly selected for heat preservation according to specific conditions.

Fig. 18 and 19 show a positive displacement heat exchange device 100 according to an eighth embodiment of the invention. As shown in fig. 18 to 19, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a main heat exchange pipe 44. Similar to the previous embodiments, the present embodiment may optionally provide heat exchange spoilers, such as heat exchange spoilers 60, within the primary heat exchange tube 44 to enhance heat exchange. The relevant contents of the heat exchanging turbulator will be described in detail below and will not be further described herein.

The structure in this embodiment is the same as that in the seventh embodiment, and differs therefrom in that the same reference numerals are used for the same or similar components, and specific reference is made to the foregoing description, and detailed description thereof will not be provided here. The main differences are described in detail below.

Referring to fig. 18 and 19, in this embodiment, a heat exchange channel 103 is also disposed on a side wall of the inner container 10, an upper end of the heat exchange channel 103 extends to an upper portion of the inner container 10, a lower end of the heat exchange channel 103 extends to a lower portion of the inner container 10, and a structure of the heat exchange channel 103 may refer to the description of the previous embodiment and will not be repeated here.

Unlike the seventh embodiment, the positive displacement heat exchange device 100 of the present embodiment further includes an air passage 104, and the air passage 104 is provided at the bottom of the inner container 10 and extends into the water storage chamber 101. One end of the air passage 104 is communicated with the combustion chamber 202, the other end of the air passage 104 is communicated with the lower part of the heat exchange passage 103, and the upper part of the heat exchange passage 103 is communicated with the outside.

Thus, the flue gas in the combustion chamber 202 can enter the main heat exchange tube 44, exchange heat with water in the liner 10 through the main heat exchange tube 44, enter the heat exchange channel 103 through the air passage 104, and flow out of the outside through the heat exchange channel 103. Because the air passage 104 extends into the water storage cavity 101, the flue gas entering the air passage 104 can better exchange heat with the water in the water storage cavity 101 through the inner container 10, the heat exchange area is larger, the water heating effect is better, and then the flue gas entering the heat exchange channel 103 can continuously exchange heat with the side wall of the inner container 10, and heat is transferred into the water through the inner container 10.

At this time, the water in the water storage chamber 101 can be heated from the inside, the outside and the bottom simultaneously, and the water is heated more uniformly and more rapidly. Meanwhile, both the side and the bottom of the inner container 10 can exchange heat with the flue gas, so that the heat exchange area is enlarged, and the heat exchange capacity of the positive-displacement heat exchange device 100 is increased.

According to the positive-displacement heat exchange device 100 provided by the embodiment of the invention, the main heat exchange pipe 44 communicated with the combustion chamber 202 is arranged in the water storage chamber 101, the heat exchange channel 103 is arranged on the side wall of the inner container 10, and the air passage 104 which is communicated with the combustion chamber 202 and the heat exchange channel 103 and extends into the water storage chamber 101 is arranged at the bottom of the inner container 10, so that the flue gas carrying heat in the combustion chamber 202 can flow out of the outside through the main heat exchange pipe 44 and flow out of the outside through the air passage 104 and then flow out of the outside through the heat exchange channel 103, the flue gas can not only transfer the heat into water through the main heat exchange pipe 44, but also transfer the heat into the water through the inner container 10, the heat exchange area is enlarged, the heating of the water is more uniform, the heating speed is faster, and the heat utilization is more sufficient.

As shown in fig. 18, the chimney 104 may be formed in a U-shape with a downward opening, that is, the chimney 104 has an ascending flue and a descending flue. Therefore, the flue gas in the combustion chamber 202 can rise and then fall in the air duct 104 and then flow into the heat exchange channel 103, so that the flow of the flue gas is smoother, the contact area between the flue gas and the liner 10 can be further enlarged, and the heating effect and efficiency of water can be further improved.

Further, the top wall surface of the air duct 104 may be formed in an arc shape. Thereby, the transition from the rising flue to the falling flue is more gentle, the rising flue gas is easier to change the direction, and enters the falling flue of the air duct 104, the flue gas flows more smoothly, and the noise is smaller.

Of course, in the present invention, the shape of the air duct 104 is not limited to the U-shape, but may be other meandering shapes, for example, S-shape, which will be understood by those skilled in the art, and will not be described in detail herein.

As shown in fig. 18 and 19, the bottom wall of the inner container 10 may be recessed into the water storage chamber 101 to form a lower slot, the opening of the lower slot may face the combustion chamber 202, the positive displacement heat exchange device 100 may further include a partition 80, the partition 80 may be disposed in the combustion chamber 202, and the upper end of the partition 80 may extend into the lower slot to partition the lower slot to form the air passage 104. Therefore, the combustion chamber 202 can be divided by the partition 80, the combustion chamber 202 and the lower groove can form the air passage 104 with larger size under the division of the partition 80, and the gas fluidity is better, so that the heat exchange is facilitated.

The partition 80 may be formed in various kinds, alternatively, in the embodiment shown in fig. 18 and 19, the partition 80 is an annular plate, and the partition 80 may extend downward beyond the burner 30, that is, the lower end of the partition 80 may have a level not higher than the lower end of the burner 30. Thus, the separator 80 can enclose the burner 30 from the outside, not only can protect the burner 30, but also can more fully separate the combustion chamber 202, further prolong the length of the air passage 104, enable the flue gas to flow upwards more easily, perform subsequent heat exchange and avoid the flue gas from gathering in the combustion chamber 202.

Alternatively, the heat exchange channel 103 may be disposed around the combustion chamber 202. Therefore, the peripheral walls of the inner container 10 can be in direct contact with the flue gas for heat exchange, the heat exchange area can be further increased, and water can be heated more quickly and uniformly. Further, the air passage 104 may include a plurality of air passages 104 may be disposed at intervals along the circumferential direction of the liner 10. Therefore, the flue gas in the combustion chamber 202 can enter the heat exchange channel 103 through the plurality of air channels 104 at the same time, the flue gas flows more uniformly and rapidly, the heat exchange capacity can be further improved, and meanwhile, the air channels 104 occupy less space at the bottom of the liner 10, and the influence on the volume of the liner 10 is small.

As shown in fig. 18 and 19, when the air passage 104 is formed in a plurality of spaced apart form along the circumferential direction of the inner container 10, the partition 80 may be formed as an annular plate, and specifically, the partition 80 includes an annular body provided in the combustion chamber 202 and having an upper end connected to the bottom wall of the inner container 10, and a plurality of partition plates provided at spaced apart form the upper end of the annular body and extending into the plurality of lower grooves one by one to partition each lower groove. Thus, not only the partition effect is good, but also the installation of the partition 80 is reliable.

Fig. 20 to 23 show a positive displacement heat exchange device 100 according to a ninth embodiment of the invention. As shown in fig. 20 to 23, the positive displacement heat exchange device 100 according to an embodiment of the present invention may include a liner 10, a burner housing 20, a burner 30, and a heat exchange smoke pipe, which may include a main heat exchange pipe 44.

As shown in fig. 20 to 23, in the present embodiment, an elongated heat exchange spoiler 60 may be disposed in the main heat exchange tube 44, and the heat exchange spoiler 60 is connected to the main heat exchange tube 44. The heat exchange spoiler 60 can play the vortex effect to the flue gas that flows into in the main heat exchange tube 44, increases the contact time of flue gas and main heat exchange tube 44, and the heat transfer is more abundant, and the flue gas can also carry out the heat exchange with heat exchange spoiler 60 simultaneously, and heat transfer to main heat exchange tube 44 can be with the heat transfer of receiving to heat exchange spoiler 60, increases the heat of main heat exchange tube 44, promotes heating effect and efficiency to water.

It will be appreciated that in order to achieve heat exchange with and turbulence of the flue gas, the main heat exchange tube 44 is not limited to the provision of heat exchange turbulence plates 60, e.g. heat exchange turbulence protrusions or the like may be provided, as will be appreciated by those skilled in the art. That is, in the present invention, a heat exchanging spoiler capable of exchanging heat with and disturbing the flue gas may be provided in the main heat exchanging pipe 44 to enhance heat exchanging ability and improve heating efficiency and effect of water.

According to the positive displacement heat exchange device 100 provided by the embodiment of the invention, the heat exchange turbulence piece is arranged in the main heat exchange pipe 44, so that heat in the flue gas can be transferred to water in the water storage cavity 101 more, the heating efficiency and effect of the water are improved, and the heat utilization rate is improved.

Alternatively, as shown in fig. 20 to 23, the heat exchanging fin 60 may include a plurality of heat exchanging fins 60 may be disposed at intervals along the circumferential direction of the main heat exchanging tube 44, an outer end of each heat exchanging fin 60 may be connected to the main heat exchanging tube 44, and inner ends of the plurality of heat exchanging fins 60 may be spaced apart from each other. Thus, a peripheral ventilation channel 401 may be formed between two adjacent heat exchange spoilers 60, the inside of the main heat exchange tube 44 may be divided into a plurality of peripheral ventilation channels 401 in the circumferential direction, and the middle portion of the main heat exchange tube 44 may be formed substantially with one middle ventilation channel 402 communicating with each peripheral ventilation channel 401. Thus, a part of the flue gas can flow from bottom to top directly through the middle ventilation channel 402 to be discharged outside, and another part of the flue gas can flow in the peripheral ventilation channel 401, so that the flue gas flows more uniformly, and the heat exchange capability is improved.

As shown in fig. 22, each heat exchange spoiler 60 may extend in the radial direction of the main heat exchange tube 40, that is, the extending direction of each heat exchange spoiler 60 passes through the central axis of the main heat exchange tube 40. Therefore, the heat exchange spoiler 60 has better separation effect on the main heat exchange tube 44, the flue gas is more uniformly distributed, and the flow is smoother.

Further, each heat exchanging fin 60 may be provided with a plurality of turbulence holes 601, and the plurality of turbulence holes 601 may be spaced apart along the axial direction of the main heat exchanging pipe 44. Thus, two adjacent peripheral ventilation channels 401 can be communicated through a plurality of turbulence holes 601, the flue gas in two adjacent peripheral ventilation channels 401 can be communicated with each other, mixed flow occurs, and the turbulence of the heat exchange spoiler 60 is stronger. As shown in fig. 20 and 23, the flow path of the flue gas in the main heat exchange tube 44 is more complex, has a vortex effect, increases the synergistic effect of the velocity field and the temperature field, and also increases the residence time of the flue gas, thereby increasing the heat exchange capacity, and also enabling the flue gas to be more uniformly distributed in the main heat exchange tube 44, enabling the hot water in the liner 10 to be heated more uniformly, and further improving the heat exchange capacity.

As shown in fig. 20 to 23, each heat exchanging fin 60 may include a fin body 61 and a heat exchanging fin 62, respectively. The outer end of the spoiler main body 61 may be connected to the main heat exchange tube 44, and the spoiler hole 601 may be provided in the spoiler main body 61. The heat exchange fins 62 may include a plurality of heat exchange fins 62 connected to the upper edges of the plurality of turbulence holes 601 in a one-to-one correspondence. That is, the plurality of heat exchange fins 62 are in one-to-one correspondence with the plurality of flow disturbing holes 601, and each heat exchange fin 62 is disposed on the upper edge of the corresponding flow disturbing hole 601.

Wherein, the included angle theta between each heat exchange fin 62 and the flow direction of the flue gas is more than or equal to 90 degrees and less than 180 degrees. Here, the flow direction of the smoke may be understood as the flow direction of the smoke as a whole, and generally, the flow direction of the smoke is a bottom-up direction, as shown in fig. 20, up-down direction. That is, the heat exchange fins 62 may be inclined obliquely downward with respect to the vertical direction.

Therefore, when the flue gas flowing between two adjacent peripheral ventilation channels 401 flows through the ends of the heat exchange fins 62, larger vortex can be formed on the upper back surface of the ends of the heat exchange fins 62, the synergistic effect of a speed field and a temperature field can be increased, and the residence time of the flue gas can also be increased, so that the heat exchange capability of the flue gas, the main heat exchange tube 44 and the turbulent flow heat exchange plates is enhanced, the uniformity of flue gas distribution can be further improved, the hot water of the liner 10 is heated more uniformly, and the heat exchange capability is further improved.

Further, the included angle θ between each heat exchanging fin 62 and the flow direction of the flue gas may be in the range of 120 degrees to 150 degrees (including two end points). For example, each heat exchange fin 62 may be at an angle θ of 135 degrees to the direction of flue gas flow.

As shown in fig. 20 to 23, adjacent two heat exchange fins 62 on each heat exchange spoiler 60 are respectively provided on both sides of the spoiler main body 61 in the circumferential direction of the main heat exchange tube 44 in the flue gas flow direction. Therefore, in the flow direction of the flue gas, each heat exchange spoiler 60 can form a structure that heat exchange fins 62 positioned on one circumferential side and heat exchange fins 62 positioned on the other circumferential side are alternately arranged, so that the spoiler effect on the flue gas is better.

Alternatively, as shown in fig. 20 and 23, the heat exchanging fins 62 on the plurality of heat exchanging fins 60 are the same in number and are arranged to be equal in height one by one, and in the circumferential direction of the main heat exchanging tube 44, the heat exchanging fins 62 on the adjacent two heat exchanging fins 60 are arranged on the same side of the corresponding fin main body 61. For example, it is assumed that two heat exchange fins 60 adjacently arranged in the circumferential direction of the fin are a fin first and a fin second, respectively, the fin 62 on the fin first being provided on a side of the fin main body 61 of the fin first facing away from the fin second in the circumferential direction of the main heat exchange tube 44, and the fin 62 on the fin second being provided on a side of the fin main body 61 of the fin second facing toward the fin first in the circumferential direction of the main heat exchange tube 44.

Therefore, the vortex flow can be realized in the main heat exchange tube 44, but no turbulence can occur, so that the heat exchange between the smoke and the main heat exchange tube 44 and between the smoke and the heat exchange spoiler 60 can be improved, the smoke after heat exchange can be ensured to flow upwards in time, long-term retention in the main heat exchange tube 44 is avoided, and the smoke fluidity is good.

The positive displacement heat exchange device 100 according to an embodiment of the present invention is described above. It will be appreciated that the configurations of the positive displacement heat exchange device 100 of the embodiments described above may be combined with one another in any manner without conflict and are not intended to be limited solely to the particular embodiment described. For example, the drain 70 of the positive displacement heat exchange device 100 of the fifth embodiment may also be incorporated into the positive displacement heat exchange devices 100 of the sixth through ninth embodiments, and so on.

It will be appreciated by those skilled in the art that the positive displacement heat exchange device 100 according to embodiments of the present invention may also be provided with a water inlet and a water outlet in communication with the water storage chamber 101 to facilitate water inlet and outlet. Further, a water inlet pipe 120 communicated with the water storage cavity 101 can be arranged at the water inlet, and a water outlet pipe 130 communicated with the water storage cavity 101 can be arranged at the water outlet, so that the water storage cavity 101 can be conveniently connected with other external devices.

Other configurations and operations of the positive displacement heat exchange device 100 according to embodiments of the present invention will be apparent to those of ordinary skill in the art and will not be described in detail herein.

Fig. 24 and 25 illustrate a heat exchanging spoiler 60 according to an embodiment of the invention, and fig. 26 and 27 further illustrate the mounting of the heat exchanging spoiler 60 on a positive displacement heat exchanging device 100. It will be appreciated that the heat exchanging fin 60 according to embodiments of the present invention is not limited to being mounted to the positive displacement heat exchanging device 100 shown in fig. 26, but may be provided within the positive displacement heat exchanging device 100 described in some of the embodiments above.

Furthermore, the heat exchanging fin 60 according to the embodiment of the present invention may be provided on a positive displacement heat exchanging device of other structures. For example, in some specific examples, the heat exchanging spoiler 60 may also be mounted on a positive displacement heat exchanging device without a burner or without a burner being disposed below the inner container, where the lower end of the heat exchanging smoke tube in the positive displacement heat exchanging device is connected to other smoke supplying devices capable of supplying heat-carrying smoke, and the heat exchanging spoiler 60 is disposed in the heat exchanging smoke tube, where the positive displacement heat exchanging device can also utilize the smoke to heat water.

The heat exchanging spoilers 60 according to the embodiment of the present invention are described in further detail below with reference to fig. 24 to 27.

As shown in fig. 24 to 27, the heat exchanging fin 60 according to an embodiment of the present invention may include a fin body 61 and a plurality of heat exchanging fins 62, the fin body 61 may be formed in an elongated shape, the fin body 61 may be provided with a plurality of turbulence holes 601, and the plurality of turbulence holes 601 may be spaced apart along the length direction of the fin body 61. The two ends of the spoiler body 61 may be formed into a smoke-facing end and a smoke-backing end, respectively, and when the heat exchanging spoiler 60 is installed in the heat exchanging pipe, for example, the main heat exchanging pipe 44 as shown in fig. 26, an upstream end of the spoiler body 61 is the smoke-facing end and a downstream end of the spoiler body 61 is the smoke-backing end. In fig. 26, the flow direction of the flue gas is from bottom to top, and therefore, the lower end of the spoiler body 61 is a smoke facing end, and the upper end of the spoiler body 61 is a smoke backing end.

Therefore, when the spoiler main body 61 is installed in the main heat exchange tube 44, the inside of the main heat exchange tube 44 can be separated, so that the flue gas is distributed more uniformly in the main heat exchange tube 44, and meanwhile, the spoiler holes 601 on the spoiler main body 61 can be communicated with the spaces on two sides of the main heat exchange tube 44, so that the flue gas flows mutually on two sides, the residence time of the flue gas is increased, and the heat exchange capacity is increased.

Further, the heat exchange fins 62 are connected to the edges of the turbulence holes 601 adjacent to the back smoke end in a one-to-one correspondence manner, that is, the heat exchange fins 62 are in one-to-one correspondence with the turbulence holes 601, and each heat exchange fin 62 is disposed on the edge of the corresponding turbulence hole 601 nearer to the back smoke end. Each heat exchange fin 62 may extend obliquely away from the spoiler body 61 and toward the smoke-facing end. That is, each heat exchange fin 62 is disposed obliquely with respect to the spoiler body 61, and the free end of the heat exchange fin 62 (i.e., the end remote from the back smoke end) is remote from the spoiler body 61, so that the heat exchange fin 62 may form an angle with the spoiler body 61.

When the spoiler main body 61 is installed in the main heat exchange tube 44, the heat exchange fins 62 incline downwards obliquely, and when the flue gas flows through the ends of the heat exchange fins 62, vortex can be formed on the upper back surface of the ends of the heat exchange fins 62, so that the synergistic effect of a speed field and a temperature field can be increased, the residence time of the flue gas can be further increased, the heat exchange capability of the flue gas, the main heat exchange tube 44 and the heat exchange spoiler 60 is enhanced, the uniformity of flue gas distribution can be further improved, hot water in the liner 10 is heated more uniformly, and the heat exchange capability is further improved.

According to the heat exchange spoiler 60 of the embodiment of the invention, the turbulence effect on the smoke can be improved by arranging the plurality of turbulence holes 601 at intervals in the length direction of the spoiler main body 61 and arranging the inclined heat exchange fins 62 at the edges of the turbulence holes 601 adjacent to the smoke back end, the smoke can generate turbulence in the heat exchange smoke tube, the distribution is more uniform, the heat exchange capability of the heat exchange smoke tube and the heat exchange spoiler 60 with the smoke can be enhanced, the heat of the smoke can be absorbed more fully by the heat exchange smoke tube and the heat exchange spoiler 60, and the heating capability of the volumetric heat exchange device 100 to water can be improved.

The included angle α formed between the heat exchange fin 62 and the spoiler body 61 is not particularly limited, and alternatively, according to some embodiments of the present invention, the included angle α between the heat exchange fin 62 and the spoiler body 61 may be 30 degrees to 60 degrees (including two end points), so that the spoiler and heat exchange effects are good. For example, in one specific example of the present invention, the heat exchange fin 62 makes an angle of 30 degrees, 45 degrees, 50 degrees, etc. with the spoiler body 61.

As shown in fig. 24, the spoiler body 61 may include a main spoiler 611 and a mounting section 612, and the main spoiler 611 may be provided with the spoiler holes 601 and the heat exchange fins 62. One end of the mounting section 612 is connected with one end of the main spoiler 611, the other end of the mounting section 612 is formed into a back smoke end, and a mounting portion 6121 can be provided on the mounting section 612. Wherein the width of the mounting section 612 may be greater than the width of the main spoiler 611. Therefore, when the heat exchange spoiler 60 is installed on the main heat exchange tube 44, the main spoiler 611 is relatively smaller in size and easier to be placed in the main heat exchange tube 44, and can be connected with the main heat exchange tube 44 through the installation section 612, so that the connection operation is more convenient.

Alternatively, as shown in fig. 24 and 25, in the present embodiment, the mounting portion 6121 may be formed as a slot opening toward the smoke-facing end, the slot may include two, and the two slots may be provided at both ends of the mounting section 612 protruding from the main spoiler 611, respectively. Thus, the mounting section 612 may be inserted into the upper end of the main heat exchange tube 44 through two slots, and the assembled state may be shown with reference to fig. 17, and the heat exchange spoiler 60 may be hung into the main heat exchange tube 44, so that the mounting is firm and the dismounting is convenient.

Note that the structure of the mounting portion 6121 shown in fig. 24 and 25 is described as an example only, and in the present invention, no special requirement is made for the structure of the mounting portion 6121 as long as the requirement of fixing the heat exchange spoiler 60 to the main heat exchange tube 44 can be fulfilled, and for example, the mounting portion 6121 may also be formed as a snap-fit structure or the like.

With continued reference to fig. 24 and 25, in the width direction of the main spoiler 611, the two side edges of the main spoiler 611 may be provided with flaps 6111, respectively. When the heat exchange spoiler 60 is arranged in the main heat exchange tube 44, the folded edge 6111 can strengthen the strength of the heat exchange spoiler 60, so that the heat exchange spoiler 60 is prevented from being bent, the use is more reliable, and meanwhile, the folded edge 6111 can further separate the inner space of the main heat exchange tube 44, so that the heat exchange performance of the heat exchange spoiler 60 is further improved. Further, the bending directions of the folds 6111 on both side edges of the main spoiler 611 may be opposite as shown in fig. 27. Therefore, two sides of the main spoiler 611 can be provided with a folded edge 6111, so that the overall strength and heat exchange capacity of the heat exchange spoiler 60 can be further improved.

Alternatively, the bending degree of the folded edge 6111 with respect to the spoiler main body 61 may be flexibly set according to the specific situation, which is not particularly limited by the present invention. As shown in fig. 27, the folded edge 6111 may extend into an arc shape, and the curved folded edge 6111 may further enhance the vortex of the flue gas, and further enhance the heat exchange capability of the heat exchange spoiler 60 and the flue gas.

As shown in fig. 24, the spoiler main 61 may be provided with a plurality of lightening holes 6112. Therefore, the material consumption of the heat exchange spoiler 60 can be reduced, the cost is reduced, and the heat exchange spoiler 60 can be prevented from being too high in temperature. The shape of the lightening hole 6112 is not particularly limited, and may be formed in a circular shape, a polygonal shape, a special shape, or the like. Alternatively, two lightening holes 6112 may be provided between any two adjacent spoiler holes 601, and the two lightening holes 6112 may be spaced apart in the width direction of the spoiler body 61. Thus, the arrangement of the lightening holes 6112 is more reasonable, and the influence on the overall strength and stability of the spoiler main body 61 is smaller.

The heat exchange spoiler 60 according to the embodiment of the invention can make the shape and the size of the heat exchange fin 62 and the spoiler hole 601 the same when actually manufactured. That is, the heat exchanging fin 62 may entirely cover the spoiler hole 601. The heat exchange spoiler 60 with the structure can be formed by stamping, the spoiler hole 601 is punched first, and then the material originally positioned at the position of the spoiler hole 601 is bent relative to the spoiler main body 61, so that the heat exchange spoiler is convenient to manufacture.

As shown in fig. 24, the edge of the heat exchange fin 62, which is not connected to the spoiler main body 61, is formed in an arc shape. Therefore, the edges of the heat exchange fins 62 are smooth, the heat exchange fins 62 can be approximately semicircular, the assembly and installation performance is improved, and the turbulence effect on smoke can be improved. Of course, in the present invention, the shape of the heat exchange fin 62 is not limited thereto, and may be formed in a square shape as shown in fig. 22, for example.

In some embodiments of the present invention, the heat exchanging spoiler 60 is a single piece. Therefore, the overall strength and the structural stability of the heat exchange spoiler 60 can be improved, the molding is convenient, the manufacturing is simple, and the assembly efficiency of the positive-displacement heat exchange device 100 can be improved.

Other constructions and operation of the heat exchanging spoilers 60 according to embodiments of the present invention will be apparent to those of ordinary skill in the art and will not be described in detail herein.

The water heater according to the embodiment of the present invention may include the positive displacement heat exchanging device 100 according to the embodiment of the present invention, and may also include the heat exchanging fin 60 according to the embodiment of the present invention. Since the positive displacement heat exchange device 100 and the heat exchange spoiler 60 according to the embodiment of the invention have the above-mentioned beneficial technical effects, respectively, the heat exchange capability of the water heater according to the embodiment of the invention is improved, and the capability of heating water is better.

Other constructions and operation of the water heater according to the embodiments of the present invention will be apparent to those skilled in the art, and will not be described in detail herein.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.

In the description of the present specification, reference to the term "embodiment" or "example" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A positive displacement heat exchange device, comprising:

a burner housing defining a combustion chamber therein having an open upper end;

a burner disposed within the combustion chamber to produce flue gas;

the inner container is arranged at the upper end of the burner shell, a water storage cavity is defined in the inner container, an upper opening communicated with the outside is formed in the upper portion of the water storage cavity, a lower opening communicated with the combustion cavity is formed in the lower portion of the water storage cavity, heat exchange channels with two ends extending to the upper portion and the lower portion of the inner container respectively are arranged on the side wall of the inner container, an air passage extending into the water storage cavity and communicated with the combustion cavity and the lower portion of the heat exchange channels respectively is formed in the bottom of the inner container, and the upper portion of the heat exchange channels is communicated with the outside;

the main heat exchange tube is arranged in the water storage cavity, the upper end of the main heat exchange tube is hermetically arranged in the upper opening, and the lower end of the main heat exchange tube is hermetically arranged in the lower opening;

the air passage is formed into a U shape with a downward opening; the heat exchange channel is disposed around the combustion chamber.

2. A positive-displacement heat exchange device as claimed in claim 1, wherein the top wall of the chimney is curved.

3. The positive-displacement heat exchange device of claim 1, further comprising:

the bottom wall of the inner container is recessed to the water storage cavity to form a lower groove, the separator is arranged in the combustion cavity, the upper end of the separator stretches into the lower groove to separate the air passage, and the separator is connected with at least one of the inner container and the combustor shell.

4. A positive-displacement heat exchange device as claimed in claim 3, wherein the partition is an annular plate and extends downwardly beyond the burner.

5. A positive-displacement heat exchange device as claimed in claim 1, wherein the air passage comprises a plurality of spaced apart circumferentially of the inner bladder.

6. The positive-displacement heat exchange device of claim 1, further comprising:

the shell, the inner bag with the combustor shell is established in the shell, the upper portion of shell is equipped with intercommunication main heat exchange tube and external and heat transfer passageway and external export, the heat transfer passageway is at least by the internal face of shell with the external wall surface of inner bag defines.

7. The positive-displacement heat exchange device of claim 6, wherein the lower portion of the heat exchange passage extends to the burner housing and is defined by an outer wall surface of the burner housing and an inner wall surface of the housing, and a vent port communicating the combustion chamber and the heat exchange passage is provided in a side wall of the burner housing.

8. The positive-displacement heat exchange device of claim 7, wherein the vent comprises a plurality of vents spaced apart along the circumference of the burner housing.

9. A positive-displacement heat exchange device as claimed in claim 1, wherein the primary heat exchange tube is arranged coaxially with the inner vessel.

10. A positive-displacement heat exchange device according to claim 1, wherein the bottom wall of the inner container is formed in an upwardly concave arc shape, and the lower opening is provided in the middle of the bottom wall of the inner container.

11. A positive-displacement heat exchange device as claimed in claim 1, wherein the primary heat exchange tube is welded to the inner bladder.

12. The positive-displacement heat exchange device of claim 1, further comprising:

the heat exchange turbulence piece is arranged in the main heat exchange tube and is connected with the main heat exchange tube.

13. The positive-displacement heat exchange device of claim 12, wherein the heat exchange spoiler comprises:

the spoiler main body extends along the axial direction of the main heat exchange tube and is connected with the main heat exchange tube, and a plurality of flow disturbing holes are formed in the spoiler main body at intervals along the length direction of the spoiler main body;

The heat exchange fins are connected to the upper edges of the turbulence holes in a one-to-one correspondence mode, and each heat exchange fin extends downwards and obliquely in a direction away from the turbulence plate main body.

14. A water heater comprising a positive displacement heat exchange device according to any one of claims 1 to 13.