CN212253166U - Heat exchange device and water heater - Google Patents

Abstract

This application relates to water heater technical field on the whole, particularly, relates to a heat transfer device and water heater, wherein, heat transfer device includes box, heat exchanger and is used for collecting the piece that catchments of heat exchanger drippage water droplet, the inside flue that is the inflection form and extends the setting that has of box, the heat exchanger set up in the flue, the piece that catchments set up in the heat exchanger below, the heat exchanger include, heat exchanger piece group and with the heat exchange tube that heat exchanger piece group is connected, wherein, heat exchanger piece group offers the heat transfer passageway that is used for the flue gas circulation to make the flue gas pass heat exchanger piece group carries out the heat transfer, on the basis that does not change heat transfer device size, has prolonged the circulation route of flue gas in the box, has improved the heat exchange efficiency of heat exchanger, has reduced thermal loss.

Description

Heat exchange device and water heater

Technical Field

The application relates to the technical field of water heaters in general, and particularly relates to a heat exchange device and a water heater.

Background

The condensation heat exchanger structure that uses in the present gas heater trade mainly is fin tube structure and coil structure, no matter what kind of structure uses, all makes by corrosion resistant material, and corrosion resistant material generally uses the stainless steel as the main, because stainless steel material's heat conductivity is poor, needs to increase overall dimension and satisfies the heat transfer effect, but the overall dimension that increases influences the miniaturized design trend of product, leads to the unable better space-saving of water heater product size.

SUMMERY OF THE UTILITY MODEL

In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

In order to solve the technical problem of poor heat exchange effect of the water heater, the main objective of the application is to provide a heat exchange device and a water heater which can improve the heat exchange effect on the basis of not increasing the size.

In order to realize the purpose of the utility model, the following technical scheme is adopted in the application:

the heat exchanger comprises a box body, at least two heat exchangers and a water collecting piece, wherein the water collecting piece is used for collecting water drops dripped by the heat exchanger, the box body is internally provided with a flue which extends in a zigzag shape, the number of the heat exchangers is at least two, the heat exchangers are respectively positioned in two zigzag sections of the flue, and the water collecting piece is arranged below the heat exchanger;

the heat exchanger comprises a heat exchange fin group and a heat exchange tube connected with the heat exchange fin group, wherein the heat exchange fin group is provided with a heat exchange channel for flue gas circulation so that the flue gas passes through the heat exchange fin group for heat exchange.

Further, in an embodiment of the present disclosure, the heat exchanger plate set includes a plurality of heat exchanger plates arranged along the flue extension path;

the heat exchange plates are provided with through holes for forming the heat exchange channel, and the through holes between every two adjacent heat exchange plates are arranged in a staggered mode.

Further, in an embodiment of the present disclosure, the plurality of heat exchanging fins are staggered in a direction perpendicular to the extending direction of the flue.

Further, in an embodiment of the present disclosure, the heat exchanging fin set is provided with a plurality of heat exchanging channels.

Further, in an embodiment of the present disclosure, the heat exchanger fin set is provided with a plurality of pipe holes, and the heat exchanger pipe is in a folded shape and penetrates through the plurality of pipe holes.

Further, in an embodiment of the present disclosure, a fixing structure for fixing the heat exchanger is disposed inside the box body.

Further, in an embodiment of the present disclosure, a connecting pipe is disposed outside the box body, and the connecting pipe is used for communicating two adjacent heat exchangers.

Further, in an embodiment of the present disclosure, a plurality of flow guiding plates are disposed in the box body, and the flow guiding plates are used for partitioning an inner space of the box body to form the flue.

Further, in an embodiment of the present disclosure, the heat exchange device further includes a preheating pipe set wound outside the box body, and the preheating pipe set is communicated with the heat exchange pipe to convey a preheated heat exchange medium to the heat exchanger for heat exchange.

Further, in an embodiment of the present disclosure, a spoiler is disposed inside the heat exchange tube.

A water heater comprises the heat exchange device.

According to the technical scheme, the heat exchange device and the water heater have the advantages and positive effects that:

the heat exchange path with the flue gas is prolonged, the heat exchange efficiency of the heat exchanger is improved, and the heat loss is reduced.

The box is provided with the flue that is the inflection form and extends the setting, sets up the heat exchanger in the flue, the heat exchanger is provided with two at least, and is located respectively in two inflection sections of flue, the heat exchanger below is provided with the piece that catchments, and the piece that catchments collects the water droplet that the heat exchanger condenses, and the heat exchanger includes heat exchanger fin group and the heat exchange tube of being connected with heat exchanger fin group, and heat exchanger fin group offers the heat transfer passageway that is used for the flue gas circulation to make the flue gas pass heat exchanger fin group carries out the heat transfer, and each heat exchanger fin can both carry out the heat transfer with the flue gas in the.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic diagram illustrating the construction of a heat exchange device according to an exemplary embodiment.

FIG. 2 is a schematic illustration of an exploded view of a heat exchange device according to an exemplary embodiment.

FIG. 3 is a schematic diagram illustrating a heat exchanger coupling configuration of a heat exchange device according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram of a heat exchanger of a heat exchange device arranged in a box body according to an exemplary embodiment.

FIG. 5 is a schematic diagram illustrating a flue gas flow through a heat exchange device according to an exemplary embodiment.

Wherein the reference numerals are as follows:

100-a box body; 200-flue; 300-a first heat exchanger; 400-a second heat exchanger; 500-a third heat exchanger; 600-connecting pipe; 700-a baffle; 800-a set of pre-heat pipes; 900-water collecting member;

110-convex strips; 120-mounting flange;

210-a first fold back section; 220-a second inflection segment; 230-a third inflection segment;

310-heat exchange plate group; 320-heat exchange tube;

311-heat exchange fins; 312-heat exchange channels; 313-pore of pipe; 311' 1-via; 311' 2-flanging;

810-coiled tubing; 820-a water inlet pipe; 830-water inlet joint; 840-water outlet pipe; 850-water outlet joint;

910-water collection plate; 920-drain pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Present gas heater adopts the stainless steel as the heat conduction material more, stainless steel material's heat conductivity is poor, satisfy the heat transfer effect through increasing overall dimension, but the overall dimension that increases influences the miniaturized design trend of product, consequently, gas heater receives material and volume influence, the heat transfer effect is poor, this scheme provides a heat transfer device and water heater, on the basis of satisfying the miniaturized demand of heat transfer device, the heat transfer route of heat exchanger with the flue gas has been prolonged, the heat exchange efficiency of heat exchanger is improved, thermal loss has been reduced. The box body 100 is internally provided with a flue 200 which is arranged in a zigzag extending manner, at least two heat exchangers are arranged in two zigzag sections of the flue 200, and a water collecting piece is arranged below the heat exchangers; the heat exchanger comprises a heat exchange fin group 310 and a heat exchange tube 320 connected with the heat exchange fin group 310, wherein the heat exchange fin group 310 is provided with a heat exchange channel 312 for flue gas circulation, so that flue gas passes through the heat exchange fin group 310 for heat exchange, the flue 200 extending in a zigzag shape and the heat exchange channel 312 increase a flue gas circulation path, and meanwhile, the heat exchange channel 312 increases the heat exchange area between the heat exchange fin group 310 and the flue gas, and improves the heat exchange efficiency.

Referring to fig. 1 to 5, the present embodiment provides a heat exchanging device and a water heater, wherein the heat exchanging device includes a box 100, a heat exchanger and a water collecting member 900, a flue 200 folded back and extended is provided inside the box 100, the heat exchanger is disposed in the flue 200, and the water collecting member is disposed below the heat exchanger.

In this embodiment, three heat exchangers are provided, and the using state of the box 100 is taken as a reference, the three heat exchangers are sequentially defined as a first heat exchanger 300, a second heat exchanger 400 and a third heat exchanger 500 from bottom to top, the flue 200 is provided with three inflection sections, which are sequentially defined as a first inflection section 210, a second inflection section 220 and a third inflection section 230 from bottom to top, as shown in fig. 5, the first heat exchanger 300 is disposed in the first inflection section 210 of the flue 200, the second heat exchanger 400 is disposed in the second inflection section 220 of the flue 200, the third heat exchanger 500 is disposed in the third inflection section 230 of the flue 200, and the flue gas passes through the third inflection section of the flue 200 and then is discharged out of the box 100. When the heat exchanger is used, smoke enters the box body 100 from the bottom of the box body 100 and then sequentially passes through the first inflection section 210, the second inflection section 220 and the third inflection section 230 of the smoke channel 200, the smoke sequentially exchanges heat with the first heat exchanger 300, the second heat exchanger 400 and the third heat exchanger 500, the smoke channel 200 prolongs the flow path of the smoke and improves the heat exchange efficiency of the heat exchangers. This scheme also can understand like this, under the prerequisite that does not change the volume of box 100, with current heat exchanger replacement for a plurality of less heat exchangers, set up flue 200 into the inflection structure simultaneously, set up less heat exchanger in a plurality of inflection sections of flue 200, make the flue gas carry out the heat transfer with every heat exchanger in proper order.

It should be noted here that the heat exchanger and stack 200 arrangement shown in the drawings and described in this specification is only one example of the application that can employ the principles of the present application. It should be clearly understood that the principles of this application are in no way limited to the structures shown in the drawings or described in this specification.

For example, under the understanding of those skilled in the art, the flue 200 of the folded structure can be disposed inside the heat exchanger, that is, the flue 200 of the folded structure is disposed inside the heat exchanger, and the heat exchange tube 320 extends along the path of the flue 200, so that on the premise of ensuring the volume of the box 100, the heat exchange path is also extended, the heat exchange area is increased, and the heat exchange efficiency is improved.

It should therefore be clearly understood that this application describes how to make and use particular examples, but the principles of this application are not limited to any of the details of these examples. Rather, these principles can be applied to many other examples, using the knowledge gained from the present disclosure.

Referring to fig. 2, with reference to fig. 4 and 5, the box body 100 is a rectangular parallelepiped structure, two ends of the box body 100 in the length direction are respectively defined as a top end and a bottom end, the top end and the bottom end of the box body 100 are respectively provided with an opening, and the top end and the bottom end are both connected with a mounting flange 120, so that the box body 100 can be conveniently mounted and fixed. The inside of box 100 is provided with a plurality of fixed knot construct, and a plurality of fixed knot construct from box 100 bottom to the top interval arrangement setting of box 100, and fixed knot constructs the installation of heat exchanger in box 100 and fixes. In this embodiment, the fixing structure is the protruding strip 110 disposed on two opposite sides of the inner wall of the box 100, the baffle 700 is disposed below the protruding strip 110 in the box 100, a gap exists between one side of the baffle 700 and the inner wall of the box 100, so as to facilitate the circulation of smoke, and the gaps between two adjacent baffles 700 and the box 100 are disposed oppositely.

In fig. 2, three guide plates 700 are provided, two guide plates 700 are provided inside the tank 100, another guide plate 700 is provided at the opening at the top end of the tank 100, one water collecting piece 900 is provided, the water collecting piece 900 includes a water collecting plate 910 and a water discharging pipe 920, the water collecting plate 910 is provided below the third heat exchanger 500, the water collecting plate 910 can collect the condensed water, and the function of the guide plates 700 is provided. The guide plates 700 may also be four, the three heat exchangers are respectively disposed between the flues 200 formed by the four guide plates 700, the water collection plate 910 is installed on the guide plate 700 below the third heat exchanger 500, the flue gas flows from the bottom end of the box 100 to the top end of the box 100, when the flue gas flows to the third heat exchanger 500, condensed water is easily formed on the surface of the third heat exchanger 500, and therefore the water collection plate 910 is disposed below the third heat exchanger 500. A collecting groove is formed at a side of the water collecting plate 910 facing the third heat exchanger 500, and a water discharging pipe 920 is connected to the collecting groove, and the water discharging pipe 920 leads out the tank 100 from a side wall of the tank 100, thereby discharging the condensed water out of the tank 100.

In the present application, the number of the bending sections in the flue 200 may be two, three, or four, etc., so as to increase one of the natural numbers; the number of the heat exchangers can be one, two or three, and the like, the heat exchangers are sequentially communicated to form a heat exchanger group without limiting the number of the heat exchangers by combining the accommodating space in the flue 200.

Referring to fig. 1 and 2, two adjacent heat exchangers are connected by a connecting pipe 600 disposed outside the box 100, the connecting pipe 600 is a bent pipe structure, a hole for a pipeline to enter and exit is formed in a side wall of the box 100, the box 100 is heated by smoke gas during use, therefore, a preheating pipe set 800 is disposed around the box 100, the preheating pipe set 800 is used for absorbing heat of the box 100 and preheating a heat transfer medium, so as to improve heat transfer efficiency, the preheating pipe set 800 includes a coil 810, a water inlet pipe 820 and a water outlet pipe 840, the coil 810 is wound around the box 100, the inlet end of the coil 810 is connected with the water inlet pipe 820, the water inlet pipe 820 is connected with a water inlet connector 830, the outlet end of the coil 810 is communicated with the third heat exchanger 500, the water outlet pipe 840 of the preheating pipe set 800 is communicated with the first heat exchanger 300, the water outlet pipe 840 is connected with a water outlet connector 850, the heat, Third heat exchanger 500, second heat exchanger 400, first heat exchanger 300 and outlet pipe 840 of preheating pipe group 800, in this scheme, heat transfer medium flows from supreme down outside box 100, flow from last to down inside box 100, box 100 is in the use, the lower part of box 100 is close the gas burning point, the in-process temperature that the flue gas flowed to box 100 top from box 100 bottom reduces gradually, preheat the in-process, the lower heat transfer medium of needs temperature absorbs the higher position of box 100 temperature at first, effectively cool down box 100, help heat transfer medium to preheat fast simultaneously, when heat transfer medium flows to box 100 inside, heat transfer medium connects the flue gas temperature of heat transfer to rise gradually, heat transfer medium temperature rises gradually, thereby be in the temperature optimum when guaranteeing that heat transfer medium flows out box 100.

As shown in fig. 3 and 4, the heat exchanger includes a heat exchange tube 320 and a heat exchanger fin set 310, the heat exchanger fin set 310 is provided with a tube hole 313 for the through connection of the heat exchange tube 320, meanwhile, in order to ensure that the heat exchanger fins 311 in the heat exchanger fin set 310 fully exchange heat with the flue gas, the heat exchanger fin set 310 is provided with a heat exchange channel 312 for the circulation of the flue gas, and the flue gas contacts each heat exchanger fin 311 when passing through the heat exchange channel 312. On the basis of this structure, in this scheme, heat exchanger fin group 310 includes a plurality of heat exchanger fins 311 of arranging the setting, and every heat exchanger fin 311 is provided with the through-hole 311 '1 that is used for forming heat transfer passageway 312, and a plurality of heat exchanger fins 311 are crisscross in perpendicular to flue 200 extending direction and are set up, and the through-hole 311' 1 dislocation between two adjacent heat exchanger fins 311 sets up, and this structure extension flue gas circulation route in heat transfer passageway 312 increases the heat transfer area of heat exchanger fin 311 and flue gas, improves heat exchange efficiency.

The number of the tube holes 313 and the number of the heat exchange channels 312 can be multiple according to the use requirement, for example, in fig. 4, three tube holes 313 are provided, the heat exchange tubes 320 sequentially pass through the three tube holes 313, the heat exchange tubes 320 are folded back, the number of the heat exchange channels 312 is multiple, the heat exchange channels 312 are respectively arranged on the peripheral side of each tube hole 313, the distance between the heat exchange channels 312 and the heat exchange tubes 320 is reduced, and the uniformity of heat exchange media in the heat exchange tubes 320 is ensured. The first heat exchanger 300, the second heat exchanger 400 and the third heat exchanger 500 have the same structure, in fig. 3 and this embodiment, the first heat exchanger 300 is labeled and described, the heat exchange fins 311 in the heat exchange fin group 310 are arranged along the extending direction of the flue 200, two sides of each heat exchange fin 311 in the transverse direction are respectively provided with a turned-over edge 311 '2, when the plurality of heat exchange fins 311 are arranged, the turned-over edges 311' 2 enable a certain gap to be formed between two adjacent heat exchange fins 311, so that the flue gas can contact with the surfaces of the heat exchange fins 311 for heat exchange.

In the scheme, the box body 100, the preheating pipe group 800, the heat exchange pipe 320 and the heat exchange fins 311 are made of stainless steel, the stainless steel has the characteristics of high temperature resistance and corrosion resistance, the heat exchange pipe 320 comprises a straight pipe section and a bent pipe section, and the bent pipe section is used for enabling the heat exchange pipe 320 to penetrate through one pipe hole 313 from the other pipe hole 313.

This scheme still provides a water heater, and the water heater adopts above-mentioned heat transfer device.

In summary, the present disclosure provides a heat exchange device and a water heater, a flue 200 extending in a zigzag structure is disposed in a box 100, a heat exchanger is disposed in a zigzag section of the flue 200, flue gas exchanges heat with each heat exchanger in sequence, the flue 200 prolongs a flow path of flue gas, and heat exchange efficiency is improved; the heat exchange plate group 310 is provided with a heat exchange channel 312 for flue gas circulation, the heat exchange plates 311 are provided with through holes 311 '1 for forming the heat exchange channel 312, the through holes 311' 1 of the two adjacent heat exchange plates 311 are arranged in a staggered mode, the heat exchange plates 311 are arranged in a staggered mode in the direction perpendicular to the extension direction of the flue 200, the circulation path of the flue gas in the heat exchange channel 312 is prolonged, the flue gas is fully contacted with the heat exchange plates 311 for heat exchange, the heat exchange efficiency is improved, a water collecting part 900 is arranged below the heat exchanger close to the top of the box body 100, and condensed water of the heat exchanger is collected.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (11)

1. The heat exchange device is characterized by comprising a box body (100), heat exchangers and a water collecting piece (900) for collecting water drops dropping from the heat exchangers, wherein at least two heat exchangers are arranged in the box body (100) and extend in a zigzag manner and are respectively positioned in two zigzag sections of the flue (200), and the water collecting piece (900) is arranged below the heat exchangers;

the heat exchanger comprises a heat exchange fin group (310) and a heat exchange tube (320) connected with the heat exchange fin group (310), wherein the heat exchange fin group (310) is provided with a heat exchange channel (312) for flue gas circulation, so that the flue gas passes through the heat exchange fin group (310) to exchange heat.

2. The heat exchange device according to claim 1, wherein the heat exchange plate group (310) comprises a plurality of heat exchange plates (311) arranged along the extending path of the flue (200);

the heat exchange plates (311) are provided with through holes for forming the heat exchange channels (312), and the through holes between every two adjacent heat exchange plates (311) are arranged in a staggered mode.

3. A heat exchange device according to claim 2, wherein a plurality of the heat exchange fins (311) are staggered in a direction perpendicular to the extending direction of the flue (200).

4. A heat exchange device according to claim 1, characterized in that the heat exchange plate pack (310) is provided with a plurality of heat exchange channels (312).

5. The heat exchange device according to claim 1, wherein the heat exchange plate group (310) is provided with a plurality of pipe holes (313), and the heat exchange pipe (320) is connected with the plurality of pipe holes (313) in a folded-back manner in a penetrating manner.

6. The heat exchange device according to claim 1, characterized in that a fixing structure for fixing the heat exchanger is arranged inside the box body (100).

7. The heat exchange device according to claim 1, wherein a connecting pipe (600) is arranged outside the box body (100), and the connecting pipe (600) is used for communication between two adjacent heat exchangers.

8. The heat exchange device according to claim 1, wherein a plurality of baffles (700) are arranged in the box body (100) at intervals, and the baffles (700) are used for partitioning the inner space of the box body (100) to form the flue (200).

9. The heat exchange device according to claim 1, further comprising a preheating pipe set (800) wound outside the box body (100), wherein the preheating pipe set (800) is communicated with the heat exchange pipe (320) to convey a preheated heat exchange medium to the heat exchanger for heat exchange.

10. The heat exchange device of claim 1, wherein a flow perturbation is disposed within the heat exchange tube (320).

11. A water heater comprising the heat exchange device of any one of claims 1 to 10.

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