CN220303895U - Condensing heat exchanger and gas heat exchange device - Google Patents

Abstract

The utility model discloses a condensing heat exchanger, which comprises a shell, wherein a smoke inlet, a smoke outlet, a water inlet and a water outlet are formed in the shell, and a smoke cavity is formed in the shell; the first baffle plate is arranged in the smoke cavity and divides the smoke cavity into a first cavity and a second cavity, the smoke inlet is communicated with the first cavity, the smoke outlet is communicated with the second cavity, and a first smoke penetrating hole is formed in the first baffle plate; the smoke inlet and the water outlet are positioned on one side of the first baffle, and the smoke outlet and the water inlet are positioned on the other side of the first baffle; the heat exchange pipeline is arranged in the flue gas cavity in a roundabout way, one end of the heat exchange pipeline is communicated with the water inlet, and the other end of the heat exchange pipeline is communicated with the water outlet. Through setting up first baffle and prolonged the flow path of flue gas in the flue gas cavity, be favorable to improving the heat transfer effect between flue gas and the heat exchange pipeline. The utility model also discloses a gas heat exchange device.

Description

Condensing heat exchanger and gas heat exchange device

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a condensing heat exchanger and a gas heat exchange device.

Background

At present, a general wall-mounted boiler heat exchange device comprises a shell, a heat exchange coil arranged in the shell and a combustor positioned in a hollow area of the heat exchange coil, water to be heated is introduced into the heat exchange coil, flame and smoke are formed in the hollow area of the heat exchange coil after gas in the combustor is combusted, surrounding air is heated by the flame to heat the water in the heat exchange coil, and air flow passing through heat exchange is directly discharged outwards from an exhaust channel arranged on the shell. The heat exchange efficiency of the heat exchange device is low, so that the energy consumption is high, and the energy conservation and the environmental protection are not enough.

The prior Chinese patent application with publication number of CN109506488A discloses a condensing heat exchanger, which comprises a shell; the spiral flat tube bundle is arranged in the shell; the spiral flat tube bundle is provided with a plurality of spiral flat tubes, a water flow channel is formed in each spiral flat tube, and a gas flow channel is formed outside each spiral flat tube; a wick disposed in the housing; the liquid suction core is positioned on a throwing path of condensate thrown out by the outer surface of the spiral flat pipe under the drive of the hot gas.

The condensing heat exchanger can recycle the waste heat in the flue gas, and transfer the heat in the flue gas to cold water through the condensing heat exchanger to heat water flow, so that the waste heat in the flue gas is fully utilized. However, the condensation heat exchanger still has some problems, for example, the flue gas in the condensation heat exchanger directly flows out from the air flow outlet after passing through the spiral flat tube bundle, the residence time of the flue gas in the flow channel is shorter, and the heat exchange effect between the flue gas and the spiral flat tube bundle is poorer. In view of this, how to design a technology for improving the heat exchange effect of the condensing heat exchanger is a technical problem to be solved by the utility model.

Disclosure of Invention

The utility model provides a condensing heat exchanger and a gas heat exchange device, which can improve the heat exchange effect of the condensing heat exchanger.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

in one aspect, the present utility model provides a condensing heat exchanger comprising:

the shell is provided with a smoke inlet and a smoke outlet, a smoke cavity body communicated with the smoke inlet and the smoke outlet is formed in the shell, and the shell is also provided with a water inlet and a water outlet;

the first baffle is arranged in the smoke cavity and connected with the side wall of the smoke cavity, the first baffle divides the smoke cavity into a first cavity and a second cavity, the smoke inlet is communicated with the first cavity, the smoke outlet is communicated with the second cavity, and a first smoke penetrating hole is formed in the first baffle;

the smoke inlet and the water outlet are positioned on one side of the first baffle, and the smoke outlet and the water inlet are positioned on the other side of the first baffle;

the heat exchange pipeline is arranged in the flue gas cavity in a roundabout way, one part of the heat exchange pipeline is positioned in the first cavity, the other part of the heat exchange pipeline is positioned in the second cavity, one end of the heat exchange pipeline is communicated with the water inlet, and the other end of the heat exchange pipeline is communicated with the water outlet.

In some embodiments of the present application, the first smoke-permeable aperture is located away from a junction of an end of the first baffle that is distal from the smoke inlet and an inner sidewall of the housing.

Through set up first smoke vent in the juncture of the tip of keeping away from the first baffle of inlet and the inside wall of casing, the flow path of high temperature flue gas in the flue gas cavity that like this can furthest improves flue gas heat exchange efficiency, simultaneously, has reduced the flue gas dead angle in the flue gas cavity.

In some embodiments of the present application, the first baffle is disposed obliquely downward from the smoke inlet side.

Through setting up first baffle into by advancing the setting of cigarette mouth side downward sloping, because first smoke vent is in the juncture of the tip of the first baffle of keeping away from the cigarette mouth and the inside wall of casing, the comdenstion water that forms after convenient high temperature flue gas runs into the heat exchange pipeline in the second cavity discharges like this.

In some embodiments of the present application, the condensing heat exchanger further comprises:

the guide plate is connected with the end part of the first baffle plate close to the first smoke penetration hole, and extends towards the second cavity.

Through setting up the guide plate, the guide plate is connected with the tip that is close to first baffle of first smoke vent department, and the guide plate extends towards the second cavity, under the condition that the flue gas passed first smoke vent entering second cavity like this, can reduce the impact that high temperature flue gas produced the inside wall of casing, reduces thermal loss.

In some embodiments of the present application, the baffle is folded toward the heat exchange line within the second cavity.

Through setting up the guide plate for buckling towards the heat exchange pipeline in the second cavity, can make more flue gas blow to the heat exchange pipeline in the second cavity like this, reinforcing heat transfer effect.

In some embodiments of the present application, the condensing heat exchanger further comprises:

the second baffle is arranged in the first cavity and positioned between the smoke inlet and the heat exchange pipeline in the first cavity, and the second baffle is connected with the inner side wall of the shell;

the second baffle is provided with a second smoke-permeable hole and a third smoke-permeable hole, the position of the second smoke-permeable hole is opposite to the smoke inlet, the position of the third smoke-permeable hole deviates from the smoke inlet, and the size of the second smoke-permeable hole is smaller than that of the third smoke-permeable hole.

Through setting up the second baffle at first cavity, the second baffle is located between the heat exchange pipeline in inlet and the first cavity, be equipped with second through hole and third through hole on the second baffle, the position of second through hole is relative with the inlet, the skew inlet of third through hole, the size of second through hole is less than the size of third through hole, namely with the second through hole that advances the mouth just right less, the size of the third through hole of skew inlet is great, be favorable to balanced flue gas air current, make the more even entering first cavity of flue gas, thereby make the heat exchange pipeline abundant carry out the heat exchange with high temperature flue gas.

In some embodiments of the present application, a drain is provided at the bottom of the housing, the drain configured to drain condensed water within the housing.

In some embodiments of the present application, the condensing heat exchanger further comprises:

the smoke temperature detector is arranged on the shell and is used for detecting the smoke temperature at the smoke outlet, and the tail end of the probe of the smoke temperature detector is positioned on the central line of the smoke outlet.

In some embodiments of the present application, the condensing heat exchanger further comprises:

the water level detector is arranged on the shell and is used for detecting the water level of condensed water in the shell.

In another aspect, the utility model also provides a gas heat exchange device comprising a condensing heat exchanger according to any one of the embodiments of the first aspect.

Compared with the prior art, the condensing heat exchanger and the gas heat exchanger device provided by the utility model have the following advantages and positive effects: through setting up casing, first baffle and heat exchange pipeline, be equipped with inlet, outlet, water inlet and delivery port on the casing, first baffle separates the flue gas cavity in the casing into first cavity and second cavity, is equipped with first smoke vent on the first baffle, and flue gas gets into first cavity through inlet, carries out the first heat exchange with the heat exchange pipeline that is located first cavity; then the flue gas passes through the first smoke-permeable hole and enters the second cavity to perform secondary heat exchange with the heat exchange pipeline positioned in the second cavity, the first baffle plate prolongs the flow path of the flue gas in the flue gas cavity, prolongs the residence time of the flue gas in the flue gas cavity, and is beneficial to improving the heat exchange effect; the heat exchange pipeline is circuitous and arranged in the first cavity and the second cavity, so that the heat exchange area is increased, the heat exchange pipeline and high-temperature flue gas are fully subjected to heat exchange, and the heat exchange effect is enhanced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic view of a condensing heat exchanger according to the present utility model;

FIG. 2 is a right side view of a condensing heat exchanger according to the present utility model;

FIG. 3 is a top view of a condensing heat exchanger provided by the present utility model;

FIG. 4 is a schematic view of the internal structure of another condensing heat exchanger according to the present utility model;

FIG. 5 is a schematic view of the internal structure of another condensing heat exchanger according to the present utility model;

FIG. 6 is a schematic view of a portion of the internal structure of another condensing heat exchanger according to the present utility model;

FIG. 7 is a schematic view of a portion of the internal structure of another condensing heat exchanger according to the present utility model;

FIG. 8 is a schematic view of a first baffle plate according to the present utility model;

fig. 9 is a schematic structural view of a second baffle according to the present utility model.

Reference numerals illustrate:

the device comprises a shell 10, a smoke inlet 101, a smoke outlet 102, a smoke cavity 103, a first cavity 1031, a second cavity 1032, a water inlet 104, a water outlet 105, a water outlet 106 and a clamping groove 107;

the first baffle 20, the first smoke-permeable aperture 201, the baffle 202, the fourth smoke-permeable aperture 203;

the heat exchange pipeline 30, the first heat exchange unit 301, the second heat exchange unit 302, the third heat exchange unit 303, the fourth heat exchange unit 304, the fifth heat exchange unit 305, the sixth heat exchange unit 306, the first water collection box 307, the second water collection box 308, the third water collection box 309, the fourth water collection box 310, the fifth water collection box 311, the sixth water collection box 312, the seventh water collection box 313 and the heat exchange pipe section 3000;

a smoke temperature detector 40;

a water level detector 50;

the second baffle 60, the second smoke-permeable aperture 601, and the third smoke-permeable aperture 602.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "transverse", "vertical", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The heating stove is also called as heating stove, belongs to a kind of civil life boiler, mainly refers to a kind of boiler that can satisfy people's heating demand.

Heating furnaces can be divided into an electric heating furnace, a fuel oil heating furnace, a fuel gas heating furnace, a coal burning heating furnace and the like according to different fuels, and people start to select clean and pollution-free heating products along with the improvement of living standard of people and the enhancement of environmental awareness.

The condensing heat exchanger is generally arranged in the heating furnace, and can recycle heat in the flue gas, so that the heat exchange efficiency is improved.

Referring to fig. 1 to 9, the present utility model provides a condensing heat exchanger including a housing 10, a first baffle 20, and a heat exchanging line 30.

The shell 10 is provided with a smoke inlet 101 and a smoke outlet 102, a smoke cavity 103 which is communicated with the smoke inlet 101 and the smoke outlet 102 is formed in the shell 10, and the shell 10 is also provided with a water inlet 104 and a water outlet 105;

the first baffle 20 is arranged in the smoke cavity 103 and connected with the side wall of the smoke cavity 103, the first baffle 20 divides the smoke cavity 103 into a first cavity 1031 and a second cavity 1032, the smoke inlet 101 is communicated with the first cavity 1031, the smoke outlet 102 is communicated with the second cavity 1032, and the first baffle 20 is provided with a first smoke through hole 201;

wherein the smoke inlet 101 and the water outlet 105 are positioned at one side of the first baffle 20, and the smoke outlet 102 and the water inlet 104 are positioned at the other side of the first baffle 20;

the heat exchange pipeline 30 is arranged in the smoke cavity 103 in a roundabout way, one part of the heat exchange pipeline 30 is positioned in the first cavity 1031, the other part of the heat exchange pipeline 30 is positioned in the second cavity 1032, one end of the heat exchange pipeline 30 is communicated with the water inlet 104, and the other end of the heat exchange pipeline 30 is communicated with the water outlet 105.

Specifically, as shown in fig. 4, by arranging the first baffle 20 in the housing 10, the first baffle 20 divides the flue gas cavity 103 into the first cavity 1031 and the second cavity 1032, the first cavity 1031 and the second cavity 1032 are communicated through the first smoke-permeable hole 201 on the first baffle 20, and the arrangement of the first baffle 20 prolongs the flow path of the flue gas in the flue gas cavity 103, so that the flue gas and the heat exchange pipeline 30 perform heat exchange more fully.

As shown in connection with fig. 1 and 2, in some embodiments, the water inlet 104 and the water outlet 105 are located on the same side of the housing 10, and the water inlet 104 and the water outlet 105 are located on adjacent sides of the housing 10 to the smoke inlet 101. The smoke inlet 101 and the smoke outlet 102 are located on the same side of the housing 10. Illustratively, the housing 10 with the smoke inlet 101 and the smoke outlet 102 is taken as a front side wall, and the water inlet 104 and the water outlet 105 are taken as a right side wall.

Thus, the water way of the condensing heat exchanger is convenient to install.

In other embodiments, as shown in fig. 5, the inner side wall of the housing 10 is provided with a clamping groove 107, the clamping groove 107 is located above the smoke inlet 101, and the clamping groove 107 and the smoke inlet 101 are located on the inner side wall of the same side of the housing 10, one end of the first baffle 20 is inserted into the clamping groove 107, the other end of the first baffle 20 is provided with a positioning welding tab, and the positioning welding tab is welded with the inner side wall of the housing 10, so as to fix the first baffle 20.

Specifically, as shown in fig. 8, the first smoke-permeable hole 201 is a rectangular hole or a long-waist hole. Of course, the shape of the first smoke-permeable aperture 201 includes, but is not limited to, the shape described above.

In some embodiments, the first smoke-permeable aperture 201 on the first baffle 20 is located at the interface of the end of the first baffle 20 remote from the smoke inlet 101 and the inner sidewall of the housing 10.

Specifically, through setting up first smoke vent 201 in the juncture that is located the tip of the first baffle 20 that is kept away from inlet 101 department and the inside wall of casing 10, like this, the flue gas can pass whole first cavity 1031, then reentrant second cavity 1032, has prolonged the flue gas and has flowed through the route in flue gas cavity 103, has reduced the flue gas dead angle, has prolonged the time of flue gas in flue gas cavity 103, has improved heat exchange efficiency.

In some embodiments, the housing 10 includes an inner layer, an intermediate layer, and an outer layer, the inner layer is made of a high temperature resistant material, and the intermediate layer is made of a thermal insulation material, so as to reduce heat dissipation of the housing 10.

In one embodiment, the heat exchange tube 30 is fabricated from a metallic material.

Illustratively, the heat exchange tube 30 is fabricated from a stainless steel material.

Specifically, a sealing ring is connected to the smoke inlet 101.

The smoke leakage can be prevented by arranging the sealing ring.

Specifically, a mounting plate is provided on the outside of the housing 10 for fixing the housing 10 to the inside of the gas heat exchange device.

In some embodiments of the present application, the first baffle 20 is disposed obliquely downward from the smoke inlet 101 side.

Specifically, by setting the first baffle 20 to be set up by the downward slope of inlet 101 side, because the first smoke vent 201 is in the juncture of the tip of the first baffle 20 that is away from inlet 101 and the inside wall of casing 10, the comdenstion water that forms after convenient high temperature flue gas runs into the heat exchange pipeline 30 in the second cavity 1032 is discharged, prevents that the comdenstion water from piling up.

As shown in connection with fig. 8, in some embodiments of the present application, the condensing heat exchanger further includes a baffle 202.

The baffle 202 is connected to the end of the first baffle 20 adjacent to the first smoke-permeable aperture 201, and the baffle 202 extends toward the second cavity 1032.

Specifically, by arranging the baffle 202, the baffle 202 is connected with the end of the first baffle 20 near the first smoke-permeable hole 201, and the baffle 202 extends towards the second cavity 1032, so that when the smoke passes through the first smoke-permeable hole 201 and enters the second cavity 1032, the impact of the high-temperature smoke on the inner side wall of the shell 10 can be reduced, and the heat dissipation is reduced.

In some embodiments of the present application, the baffle 202 is folded toward the heat exchange tube 30 within the second cavity 1032.

Specifically, by arranging the baffle 202 to bend toward the heat exchange pipeline 30 in the second cavity 1032, more flue gas can be blown to the heat exchange pipeline 30 in the second cavity 1032, and the heat exchange effect is enhanced.

Specifically, the baffle 202 has a zig-zag shape.

In some embodiments of the present application, as shown in connection with fig. 9, the condensing heat exchanger further includes a second baffle 60.

The second baffle 60 is arranged in the first cavity 1031 and is positioned between the smoke inlet 101 and the heat exchange pipeline 30 in the first cavity 1031, and the second baffle 60 is connected with the inner side wall of the shell 10;

the second baffle 60 is provided with a second smoke-permeable hole 601 and a third smoke-permeable hole 602, the position of the second smoke-permeable hole 601 is opposite to the smoke inlet 101, the position of the third smoke-permeable hole 602 deviates from the smoke inlet 101, the size of the second smoke-permeable hole 601 is smaller than that of the third smoke-permeable hole 602, and a dashed circle in fig. 9 is a projection line of the smoke inlet 101 on the second baffle 60.

Specifically, by arranging the second baffle 60 in the first cavity 1031, the second baffle 60 is located between the smoke inlet 101 and the heat exchange pipeline 30 in the first cavity 1031, and the second baffle 60 is provided with the second smoke-permeable hole 601 and the third smoke-permeable hole 602, the position of the second smoke-permeable hole 601 is opposite to the smoke inlet 101, the third smoke-permeable hole 602 deviates from the smoke inlet 101, the size of the second smoke-permeable hole 601 is smaller than that of the third smoke-permeable hole 602, that is, the size of the second smoke-permeable hole 601 opposite to the smoke inlet 101 is smaller, and the size of the third smoke-permeable hole 602 deviating from the smoke inlet 101 is larger, so that the smoke gas flow is balanced, and the smoke gas enters the first cavity 1031 more uniformly, so that the heat exchange pipeline 30 performs heat exchange with high-temperature smoke fully.

Illustratively, the second smoke-permeable aperture 601 and the third smoke-permeable aperture 602 are each a long-kidney-shaped aperture, a circular aperture, or a combination of a long-kidney-shaped aperture and a circular aperture. Of course, the shapes of the second smoke-permeable hole 601 and the third smoke-permeable hole 602 are not limited to the above-described shapes.

In some embodiments, the upper end of the second baffle 60 is snapped into engagement with the first baffle 20.

Specifically, one of the positions of the first baffle 20 corresponding to the second baffle 60 is provided with a protrusion, and the other is provided with a groove, and the protrusion is clamped in the groove.

In some embodiments of the present application, the heat exchange pipeline 30 includes a plurality of groups of heat exchange units connected in series, and the plurality of groups of heat exchange units connected in series are disposed in the first cavity 1031 and the second cavity 1032 in a roundabout manner.

Specifically, by arranging the heat exchange pipeline 30 to be formed by connecting multiple groups of heat exchange units in series, the multiple groups of heat exchange units connected in series are arranged in the first cavity 1031 and the second cavity 1032 in a roundabout manner, so that the overall volume of the heat exchange pipeline 30 is reduced, the length of the heat exchange pipeline 30 in the first cavity 1031 and the second cavity 1032 is increased, the heat exchange area is enlarged, and the heat exchange effect is good.

As shown in connection with fig. 2 and 4, in some embodiments, the heat exchange unit in communication with the water outlet 105 is closer to the smoke inlet 101 than other heat exchange units within the first cavity 1031; the heat exchange unit in communication with the water inlet 104 is closer to the smoke outlet 102 than other heat exchange units within the second cavity 1032.

The flow direction of the flue gas in the flue gas cavity 103 is opposite to the flow direction of the water flow in the heat exchange pipeline 30, so that the temperature difference between the inside and the outside of the heat exchange pipeline 30 is large, the heat transfer power is maximum, and the heat exchange effect is better.

As shown in connection with fig. 5, in some embodiments of the present application, each set of heat exchange units includes a plurality of heat exchange tube segments 3000 in parallel.

Because one part of the heat exchange pipeline 30 is located in the first cavity 1031, the other part of the heat exchange pipeline 30 is located in the second cavity 1032, the heat exchange pipeline 30 comprises a plurality of groups of heat exchange units which are connected in series, and thus, the first cavity 1031 and the second cavity 1032 are provided with a plurality of heat exchange units, and each group of heat exchange units is provided with a plurality of heat exchange pipe sections 3000 which are arranged in parallel, so that a plurality of heat exchange pipe sections 3000 are arranged in the first cavity 1031 and the second cavity 1032, the heat exchange surface area is increased, waste heat in flue gas can be absorbed more uniformly and fully, and the heat exchange effect is improved.

It should be noted that the number of the heat exchange tube sections 3000 of each group of heat exchange units may be 2, 3, 4 or 5, the number of the heat exchange tube sections 3000 of each group of heat exchange units includes but is not limited to the above number, and the number of the heat exchange tube sections 3000 of each group of heat exchange units may be the same or different, and may be specifically set according to actual needs.

Specifically, the plurality of heat exchange tube sections 3000 of each group of heat exchange units are arranged in parallel.

In some embodiments of the present application, heat exchange tube segment 3000 is an oval flat tube, a round tube, or a square tube.

Specifically, by setting the heat exchange tube section 3000 to be an oval flat tube, a round tube or a square tube, the processing and manufacturing of the heat exchange tube section 3000 are facilitated.

In some embodiments, heat exchange tube segment 3000 is fabricated from a metallic material.

Illustratively, the heat exchange tube segment 3000 is fabricated from a stainless steel material.

In some embodiments of the present application, the axes of the plurality of juxtaposed heat exchange tube sections 3000 of adjacent heat exchange units in the width direction are different from the axis of the smoke inlet 101.

Specifically, by making the included angles between the axes of the multiple heat exchange tube sections 3000 of the adjacent heat exchange units that are parallel to each other in the width direction and the axis of the smoke inlet 101 different, turbulence can be generated on the flow of the smoke, which is beneficial to prolonging the residence time of the smoke in the first cavity 1031 and the second cavity 1032.

In some embodiments of the present application, the axis of the plurality of juxtaposed heat exchange tube sections 3000 of the same group of heat exchange units in the width direction is parallel to the axis of the smoke inlet 101, and/or, the included angle between the smoke inlet 101 and the axis is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 25 degrees.

The above embodiment includes three schemes:

first, the axis of the heat exchange tube section 3000 in the width direction is parallel to the axis of the smoke inlet 101;

second, the included angle between the axis of the heat exchange tube section 3000 along the width direction and the axis of the smoke inlet 101 is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 25 degrees;

third, the axes of the heat exchange tube sections 3000 of some heat exchange units in the width direction are parallel to the axis of the smoke inlet 101; the included angle between the axis of the heat exchange tube sections 3000 of some heat exchange units in the width direction and the axis of the smoke inlet 101 is alpha, and alpha is 15 degrees or more and 25 degrees or less.

Specifically, the axis of the heat exchange tube section 3000 along the width direction is parallel to the axis of the smoke inlet 101, and/or the included angle between the axis of the heat exchange tube section 3000 and the axis of the smoke inlet 101 is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 25 degrees, so that on one hand, the resistance of the heat exchange tube section 3000 to smoke is small, on the other hand, the heat exchange tube section 3000 generates turbulent flow to internal smoke air flow, the heat exchange time of the heat exchange tube section 3000 and the heat exchange tube 30 is prolonged, and the heat exchange efficiency is improved.

In other embodiments, the included angle between the axes of the heat exchange tube segments 3000 of adjacent heat exchange units within the first and second cavities 1031, 1032 is α, 15+.α.ltoreq.25 °.

In some embodiments, the axis of the plurality of juxtaposed heat exchange tube segments 3000 of the heat exchange unit proximate the smoke inlet 101 in the width direction is parallel to the axis of the smoke inlet 101.

Specifically, by setting the axis of the plurality of heat exchange tube sections 3000 juxtaposed in the width direction of the heat exchange unit near the smoke inlet 101 to be parallel to the axis of the smoke inlet 101, the resistance of the smoke entering the first chamber 1031 from the smoke inlet 101 can be reduced.

In other embodiments of the present application, a plurality of juxtaposed heat exchange tube sections 3000 of the heat exchange unit near the smoke inlet 101 pass through the second smoke passing holes 601 and the third smoke passing holes 602 along the axis of the width direction.

Specifically, by arranging the plurality of heat exchange tube sections 3000 juxtaposed near the smoke inlet 101 along the axis in the width direction so as to pass through the second smoke-permeable hole 601 and the third smoke-permeable hole 602, that is, through the smoke inlet 101, the second smoke-permeable hole 601 and the third smoke-permeable hole 602, the heat exchange tube 30 can be directly seen. After passing through the second smoke-permeable holes 601 and the third smoke-permeable holes 602 and entering the first cavity 1031, the high-temperature smoke directly blows to the heat exchange pipeline 30, and the heat exchange pipeline 30 blocks the high-temperature smoke, so that the heat exchange pipeline 30 and the high-temperature smoke perform heat exchange more fully.

As shown in connection with fig. 6 and 7, in some embodiments of the present application, the heat exchange pipeline 30 further includes a plurality of water collecting boxes respectively disposed at two sides of the housing 10 for communicating with adjacent heat exchange units, and for communicating the heat exchange pipeline 30 with the water inlet 104, and for communicating the heat exchange pipeline 30 with the water outlet 105.

Through setting up a plurality of catchment boxes, a plurality of catchment boxes set up respectively in the both sides of casing 10 for communicate adjacent heat transfer unit, and be used for intercommunication heat transfer pipeline 30 and water inlet 104, and be used for intercommunication heat transfer pipeline 30 and delivery port 105, realized the roundabout switching-over of heat transfer pipeline 30 through catchment box like this, and improve the flow of water, be favorable to reducing the volume of heat transfer pipeline 30, make condensation heat exchanger structure compacter, the simple structure of catchment box, convenient manufacturing.

In a specific exemplary embodiment, as shown in connection with fig. 4, 5, 6 and 7, the heat exchange line 30 comprises 6 heat exchange units, namely a first heat exchange unit 301, a second heat exchange unit 302, a third heat exchange unit 303, a fourth heat exchange unit 304, a fifth heat exchange unit 305 and a sixth heat exchange unit 306.

The heat exchange line 30 further comprises 7 water collection boxes, namely a first water collection box 307, a second water collection box 308, a third water collection box 309, a fourth water collection box 310, a fifth water collection box 311, a sixth water collection box 312 and a seventh water collection box 313. Wherein the first water collecting box 307, the third water collecting box 309, the fifth water collecting box 311, the seventh water collecting box 313 are positioned at one side of the housing 10; the second, fourth and sixth water collection boxes 308, 310 and 312 are located at the other side of the housing 10. Wherein the fourth water collection cartridge 310 spans the first and second cavities 1031 and 1032.

The water inlet 104, 6 heat exchange units and the water outlet 105 are connected in series through 7 water collecting boxes, and the concrete steps are as follows: a first water collecting box 307 communicating the water inlet 104 with the first heat exchanging unit 301; the second water collecting box 308 is communicated with the first heat exchange unit 301 and the second heat exchange unit 302; the third water collecting box 309 communicates the second heat exchanging unit 302 with the third heat exchanging unit 303; the fourth water collection box 310 is communicated with the third heat exchange unit 303 and the fourth heat exchange unit 304; the fifth water collecting box 311 is communicated with the fourth heat exchange unit 304 and the fifth heat exchange unit 305; the sixth water collection box 312 communicates the fifth heat exchange unit 305 with the sixth heat exchange unit 306; the seventh water collection box 313 communicates the sixth heat exchange unit 306 with the water outlet 105;

each of the first heat exchange unit 301, the second heat exchange unit 302, the third heat exchange unit 303, the fourth heat exchange unit 304, the fifth heat exchange unit 305 and the sixth heat exchange unit 306 includes 5 heat exchange tube sections 3000,5 which are parallel, and each of the heat exchange tube sections 3000 is an oval flat tube.

The arrows in fig. 6 and 7 point to the flow direction of the water, and the end of the first heat exchanging unit 301 is communicated with the water inlet 104, and the end of the sixth heat exchanging unit 306 is communicated with the water outlet 105.

Wherein the first heat exchange unit 301, the second heat exchange unit 302, and the third heat exchange unit 303 are located in the second cavity 1032; the fourth heat exchange unit 304, the fifth heat exchange unit 305, and the sixth heat exchange unit 306 are located in the first chamber 1031.

As shown in fig. 5, the arrows in fig. 5 point to the flow direction of the flue gas, and the axes of the plurality of juxtaposed elliptical flat tubes of the second heat exchange unit 302, the fourth heat exchange unit 304 and the sixth heat exchange unit 306 in the width direction are all parallel to the axis of the flue gas inlet 101. In this way, the resistance of the flue gas entering and exiting the flue gas cavity 103 can be reduced, the flue gas can be uniformly diffused in the flue gas cavity 103, and the heat exchange effect is improved.

The included angle between the axes of the plurality of elliptic flat pipes connected in parallel of the first heat exchange unit 301, the third heat exchange unit 303 and the fifth heat exchange unit 305 along the width direction and the axis of the smoke inlet 101 is alpha, and alpha is more than or equal to 15 degrees and less than or equal to 25 degrees. In this way, the first heat exchange unit 301, the third heat exchange unit 303 and the fifth heat exchange unit 305 generate turbulence to the internal flue gas flow, so that the heat exchange time of the flue gas and the heat exchange pipeline 30 is increased, and the heat exchange efficiency is improved.

When the angle alpha is too large, the resistance of the smoke is increased, so that the smoke flows slowly, and the heat exchange speed is low; when the angle alpha is too small, the turbulence effect on the flue gas flow is too small, and the heat exchange effect is poor.

Specifically, as shown in fig. 8, the first baffle 20 opposite to the gap between the fourth heat exchange unit 304 and the fifth heat exchange unit 305 is further provided with a fourth smoke-permeable hole 203. If the smoke flow passes only through the first smoke-permeable aperture 201, the resistance to the flow of air is greater. By providing the fourth smoke-permeable aperture 203, the resistance of the flow of smoke entering the second chamber 1032 can be reduced and the smoke can be made more uniform.

Illustratively, the fourth smoke-permeable aperture 203 is a row of circular apertures or long waist apertures.

Illustratively, with the face of the housing 10 where the smoke inlet 101 is located as the front face, the first water collecting box 307, the third water collecting box 309, the fifth water collecting box 311, and the seventh water collecting box 313 are located on the right side wall of the housing 10, and the second water collecting box 308, the fourth water collecting box 310, and the sixth water collecting box 312 are located on the left side wall of the housing 10. The first water collection box 307 is located at the upper left corner of the right side wall of the housing 10, and the seventh water collection box 313 is located at the lower left corner of the right side wall of the housing 10. The first heat exchange unit 301 is located opposite to the smoke outlet 102; the sixth heat exchange unit 306 is located opposite to the smoke inlet 101.

In some embodiments of the present application, a drain port 106 is provided at the bottom of the housing 10, the drain port 106 being configured to drain condensed water within the housing 10.

Because the vapor in the high-temperature flue gas is liquefied after encountering the heat exchange pipeline 30 with lower temperature, condensed water is formed, and the condensed water in the shell is conveniently discharged by arranging the water outlet at the bottom of the shell, the operation of equipment is prevented from being influenced by the overhigh water level of the condensed water.

In some embodiments of the present application, as shown in connection with fig. 1 and 3, the condensing heat exchanger further comprises a smoke temperature detector 40.

The smoke temperature detector 40 is disposed on the housing, and is configured to detect a smoke temperature at the smoke outlet 102, and a probe end of the smoke temperature detector 40 is located on a central line of the smoke outlet 102.

By arranging the smoke temperature detector 40, the tail end of the probe of the smoke temperature detector 40 is positioned on the central line of the smoke outlet 102, so that the smoke temperature detection is accurate and the reliability is high; when the temperature of the flue gas at the flue outlet 102 is abnormal due to overtemperature, the flue gas temperature detector 40 can be used for safety monitoring, so that equipment is protected.

In some embodiments of the present application, the condensing heat exchanger further comprises a water level detector.

The water level detector 50 is provided to the housing 10 for detecting a water level of condensed water in the housing 10.

Specifically, by arranging the water level detector 50, when the water is not discharged smoothly at the water outlet, the water level in the shell can rise, and the water level detector can detect the water level of the condensed water in the shell in real time, so that the water level detector is favorable for reminding a user to timely treat when the water level is abnormal.

According to a second aspect of embodiments of the present utility model, there is provided a gas heat exchange device comprising a condensing heat exchanger according to any one of the embodiments of the first aspect.

The condensation heat exchanger according to any one of the above embodiments is included, so that all the advantages of the condensation heat exchanger according to any one of the above embodiments are provided, and will not be described here.

In some embodiments, the gas heat exchange device further includes an alarm and a controller, the smoke temperature detector 40 and the water level detector 50 are electrically connected with the controller, the alarm is electrically connected with the controller, the smoke temperature detector 40 and the water level detector 50 respectively transmit detected signals to the controller, the controller compares the detected signals with preset standards, and when abnormality occurs, the controller controls the alarm to alarm, and prompts a user to check equipment.

The gas heat exchange device can be a heating furnace, a wall-mounted furnace or a gas water heater, etc.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., 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 utility model. 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.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims (10)

1. A condensing heat exchanger, comprising:

the shell is provided with a smoke inlet and a smoke outlet, a smoke cavity body communicated with the smoke inlet and the smoke outlet is formed in the shell, and the shell is also provided with a water inlet and a water outlet;

the first baffle is arranged in the smoke cavity and connected with the side wall of the smoke cavity, the first baffle divides the smoke cavity into a first cavity and a second cavity, the smoke inlet is communicated with the first cavity, the smoke outlet is communicated with the second cavity, and a first smoke penetrating hole is formed in the first baffle;

the smoke inlet and the water outlet are positioned on one side of the first baffle, and the smoke outlet and the water inlet are positioned on the other side of the first baffle;

the heat exchange pipeline is arranged in the flue gas cavity in a roundabout way, one part of the heat exchange pipeline is positioned in the first cavity, the other part of the heat exchange pipeline is positioned in the second cavity, one end of the heat exchange pipeline is communicated with the water inlet, and the other end of the heat exchange pipeline is communicated with the water outlet.

2. The condensing heat exchanger of claim 1, wherein the first fume-permeable aperture is located at an interface of an end of the first baffle remote from the fume inlet and an inner sidewall of the housing.

3. The condensing heat exchanger of claim 2, wherein the first baffle is disposed obliquely downward from the flue gas inlet side.

4. The condensing heat exchanger of claim 2, further comprising:

the guide plate is connected with the end part of the first baffle plate close to the first smoke penetration hole, and extends towards the second cavity.

5. The condensing heat exchanger of claim 4 wherein said baffle is folded toward said heat exchange tube within said second cavity.

6. The condensing heat exchanger of claim 1, further comprising:

the second baffle is arranged in the first cavity and positioned between the smoke inlet and the heat exchange pipeline in the first cavity, and the second baffle is connected with the inner side wall of the shell;

the second baffle is provided with a second smoke-permeable hole and a third smoke-permeable hole, the position of the second smoke-permeable hole is opposite to the smoke inlet, the position of the third smoke-permeable hole deviates from the smoke inlet, and the size of the second smoke-permeable hole is smaller than that of the third smoke-permeable hole.

7. The condensing heat exchanger according to claim 1, wherein a drain is provided at a bottom of the housing, the drain being configured to drain condensed water within the housing.

8. The condensing heat exchanger of claim 1, further comprising:

the smoke temperature detector is arranged on the shell and is used for detecting the smoke temperature at the smoke outlet, and the tail end of the probe of the smoke temperature detector is positioned on the central line of the smoke outlet.

9. The condensing heat exchanger of claim 1, further comprising:

the water level detector is arranged on the shell and is used for detecting the water level of condensed water in the shell.

10. A gas heat exchange device comprising a condensing heat exchanger according to any one of claims 1 to 9.