CN210486042U - Combustion heat exchange equipment - Google Patents

Abstract

The utility model discloses a burning indirect heating equipment. This burning indirect heating equipment includes: the heat exchange cavity is internally provided with a heat exchange cavity; the heat exchanger is arranged in the heat exchange cavity and is connected with a water inlet pipe and a water outlet pipe, and a heat exchange flow path is formed inside the heat exchanger; the condensation preheater is arranged on the water inlet pipe, and the gas at the gas outlet side of the heat exchange cavity passes through the condensation preheater to transfer heat to the condensation preheater; a catalytic combustor radiating the heat exchanger by using heat generated by the catalytic combustion; the preheating burner is arranged opposite to the catalytic burner and used for heating the catalytic burner. According to the utility model discloses a burning indirect heating equipment adopts flameless catalytic combustion mode, and the gas can the fully reaction burning, from the harmful gas that the source control burning produced to flameless burning is soft steady, and the noise is low. The condensation preheater can absorb the heat of the flue gas, and further improves the energy utilization efficiency.

Description

Combustion heat exchange equipment

Technical Field

The utility model relates to a water heater field particularly, relates to a burning indirect heating equipment.

Background

A combustion heat exchange device (taking a gas water heater as an example) is a device for heating cold water by burning gas. The main combustion mode adopted by most gas water heaters is flame combustion, and the combustion completeness and temperature are different due to the contact difference between different combustion parts and air in the flame combustion mode. The high temperature zone causes the reaction of oxygen and nitrogen in the air to generate nitrogen oxide pollutants due to high temperature; in the low-temperature region, harmful substances such as carbon monoxide, hydrocarbon, tar and the like are generated due to incomplete combustion, pollutants in the flue gas generated by combustion harm personal safety and pollute the environment, and meanwhile, part of combustion heat is wasted due to the fact that the flue gas is directly discharged.

The existing methods for controlling the combustion to generate harmful gases mainly comprise the following steps: the thick and thin combustion technology and the catalytic degradation of carbon monoxide are adopted, but the thick and thin combustion mode can only effectively reduce the emission of nitrogen oxides and can not reduce the emission of carbon monoxide; after the flue gas is generated by combustion, carbon monoxide is reduced in a catalytic degradation mode, and meanwhile, the increase of nitrogen oxides can be caused, and a follow-up catalytic degradation method is a remedial measure which is generated and then eliminated, and cannot be controlled from the source. Therefore, the adoption of a safe and environment-friendly combustion mode with high combustion efficiency becomes the direction of the technical development of the gas water heater.

In addition, the flue gas produced by combustion still has higher temperature, and the heat of flue gas cannot be utilized by the existing gas water heater, so that the energy waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a burning indirect heating equipment can improve combustion efficiency and energy efficiency.

According to the utility model discloses burning indirect heating equipment includes: the heat exchange cavity is internally provided with a heat exchange cavity; the heat exchanger is arranged in the heat exchange cavity and is connected with a water inlet pipe and a water outlet pipe, and a heat exchange flow path is formed inside the heat exchanger; the condensation preheater is arranged on the water inlet pipe, and gas on the gas outlet side of the heat exchange cavity passes through the condensation preheater to transfer heat to the condensation preheater; a catalytic combustor radiating the heat exchanger with heat generated by catalytic combustion; a preheating burner disposed opposite the catalytic burner, the preheating burner for heating the catalytic burner.

According to the utility model discloses a burning indirect heating equipment adopts flameless catalytic combustion mode, and the gas can the fully reaction burning, from the harmful gas that the source control burning produced to flameless burning is soft steady, and the noise is low. The condensation preheater can absorb the heat of the flue gas, and further improves the energy utilization efficiency.

According to some embodiments of the utility model, the burning indirect heating equipment still includes: the fan subassembly, the fan subassembly sets up the heat transfer cavity's the side of giving vent to anger, just the fan subassembly includes: fan and collection petticoat pipe, the fan sets up on the collection petticoat pipe, the fan be used for with gas in the heat transfer intracavity is taken out, the end of giving vent to anger of fan with heat transfer chamber intercommunication, the end of giving vent to anger of fan with condensation pre-heater links to each other.

Further, an air outlet pipe is further arranged on the condensation preheater.

Further, the combustion heat exchange device further comprises: and the condensate water treatment device is connected with the condensation preheater and is positioned below the condensation preheater.

According to some embodiments of the utility model, the burning indirect heating equipment still includes: a fan assembly, and the fan assembly comprises: the exhaust fume collecting hood is arranged on the air outlet side of the heat exchange cavity, and the condensation preheater is arranged between the exhaust fume collecting hood and the heat exchanger.

Further, a condensate water receiving disc is arranged between the condensation preheater and the heat exchanger.

Further, the combustion heat exchange device further comprises: and the condensate water treatment device is connected with the condensate water receiving disc and is positioned below the condensate water receiving disc.

Further, the fan assembly further includes: the fan is arranged below the combustor and is an air blower and used for blowing air into the heat exchange cavity.

According to some embodiments of the utility model, the heat exchanger is multistage heat exchanger, and multistage the first order heat exchanger of heat exchanger is connected with condensation pre-heater, multistage the last level heat exchanger of heat exchanger is connected with the outlet pipe, and is multistage establish ties each other between the heat exchanger, with multistage the inside formation of heat exchanger the heat transfer flow path.

According to some embodiments of the utility model, the burning indirect heating equipment still includes: and the water inlet control valve is arranged on the water inlet pipe and used for adjusting the water flow of the heat exchange flow path, and the water inlet control valve is positioned at the water inlet end of the condensation preheater.

According to some embodiments of the utility model, the burning indirect heating equipment still includes: and the temperature sensor is arranged on the water outlet pipe and used for detecting the water temperature of the heat exchange flow path.

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

FIG. 1 is a cross-sectional view of a combustion heat exchange apparatus;

FIG. 2 is a cross-sectional view of another combustion heat exchange apparatus.

Reference numerals:

the device comprises a premixing cavity 1, an air inlet cavity 11, an air inlet 111, an air mixing cavity 12, an air inlet pipe 2, a fuel gas proportional valve 21, a heat exchange cavity 3, an ignition and feedback integrated device 31, a first temperature sensor 32, an observation window 33, a feedback device 34, a preheating burner 41, a catalytic burner 42, a fan assembly 5, a fan 51, a smoke collection hood 52, an water inlet pipe 6, an air inlet control valve 61, an water outlet pipe 7, a temperature sensor 71, a controller 8, a condensation preheater 9, a condensate water treatment device 91, an air outlet pipe 92, a condensate water receiving disc 93 and combustion heat exchange equipment 10.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The combustion heat exchange device 10 according to an embodiment of the present invention is described in detail below with reference to fig. 1-2.

Referring to fig. 1-2, a combustion heat exchange apparatus 10 includes: the heat exchange device comprises a heat exchange cavity 3, a heat exchanger, a condensation preheater 9, a catalytic combustor 42 and a preheating combustor 41.

Have the heat transfer chamber in heat transfer cavity 3, the heat transfer intracavity can be provided with: ignition feedback integrated device 31, first temperature sensor 32, observation window 33 and feedback device 34.

The ignition feedback integrated device 31 is used for igniting the preheating burner 41; the first temperature sensor 32 is used to detect the temperature of the preheat burner 41; the feedback device 34 is used for detecting the reaction state of the catalytic combustor 42; the observation window 33 is used for observing the combustion state in the heat exchange chamber.

The heat exchanger sets up in the heat transfer intracavity, and the heat exchanger is connected with inlet tube 6 and outlet pipe 7, and the inside heat transfer flow path that forms of heat exchanger. The heat exchanger can absorb external heat and transfer the heat to water in the heat exchange flow path, the water enters the heat exchange flow path from the water inlet pipe 6 to absorb heat and raise the temperature, and flows out from the water outlet pipe 7 after reaching a certain temperature, so that the requirement of a user for using hot water is met.

Condensation pre-heater 9 sets up on inlet tube 6, and the gas of the gas side of heat exchange cavity 3 passes through condensation pre-heater 9 to condensation pre-heater 9 transfer heat. Water in the inlet tube 6 is earlier through condensation preheater 9, the temperature risees in condensation preheater 9 department, reentrant heat exchanger afterwards, the high temperature flue gas that the burning produced in the heat transfer chamber is discharged outdoor behind condensation preheater 9, condensation preheater 9 can absorb the heat of flue gas and heat its inside water, can also utilize high temperature flue gas latent heat, the vapor that produces behind the gas combustion still can release the heat when condensing into liquid water after the cooling of condensation preheater 9, thereby be favorable to improving condensation preheater 9 heat exchange efficiency, the product is more energy-concerving and environment-protective.

The catalytic combustor 42 radiates the heat exchanger using heat generated by catalytic combustion.

The catalytic combustor 42 is an irregular porous block body formed by stacking ceramic ribs, the surface of the block body is coated with a catalyst, and the catalyst arranged on the block body can reduce the ignition temperature of fuel and deepen the oxidation degree of the block body, so that organic matters can be subjected to flameless combustion at a lower ignition temperature, harmful gas generated when the fuel is ignited is reduced, heat radiation is released, and the heat exchanger is heated. The gas and air can be enriched on the surface of the catalyst, the reaction rate is improved, the utilization rate of the fuel is improved, the catalyst on the catalytic combustor 42 can effectively inhibit the generation of nitrogen oxides, and meanwhile, the catalyst can ensure that the catalytic combustion of the gas is complete, reduce the content of carbon monoxide in the flue gas and further effectively reduce the emission of harmful gases. Due to flameless combustion, the combustion reaction is soft and stable, and the combustion noise of the combustion heat exchange device 10 is reduced, so that the noise generated when the combustion heat exchange device 10 operates is lower.

The preheating burner 41 is disposed opposite to the catalytic burner 42, and the preheating burner 41 is used to heat the catalytic burner 42 so that the catalytic burner 42 is within a suitable operating temperature range.

The mixture of air and fuel gas is ignited by the ignition and feedback integrated device 31 installed near the preheating burner 41, heat is released, the upper catalytic burner 42 is preheated, and when the catalytic burner 42 reaches a certain temperature, the open flame on the preheating burner 41 is extinguished and converted into flameless combustion on the catalytic burner 42.

The combustion heat exchange device 10 further comprises: premix cavity 1, intake pipe 2, controller 8.

The premixing chamber 1 is used for mixing air and gas, and the preheating burner 41 is disposed at the air outlet side of the premixing chamber 1. Premix chamber 1 includes: the gas mixing device comprises a gas inlet cavity 11 and a gas mixing cavity 12, wherein the gas inlet cavity 11 is provided with an air inlet 111, combustion-supporting gas such as air enters the gas inlet cavity 11 through the air inlet 111, and the air inlet 111 is provided with a structure for preventing gas from diffusing outwards, so that the use safety is ensured. The air inlet 111 is provided with a connector (not shown in the figure) communicated with the air inlet pipe 2, the fuel gas enters the air inlet cavity 11 through the connector, the air and the fuel gas enter the gas mixing cavity 12 together, the gas mixing cavity 12 is communicated with the air inlet cavity 11, and the gas mixing cavity 12 is internally provided with a turbulent air distribution net plate which is used for further uniformly mixing the air and the fuel gas and uniformly distributing the mixed air-fuel gas to the combustor so as to uniformly combust the fuel gas. Alternatively, the axes of the connection port and the air inlet 111 may be orthogonal, so that the gas entering from the connection port and the air entering from the air inlet 111 may collide and mix initially, which is beneficial to improving the mixing uniformity of the gas and the air.

The gas inlet pipe 2 is provided with a gas proportional valve 21, and the gas quantity required by combustion can be controlled and adjusted by adjusting the valve size of the gas proportional valve 21.

The controller 8 is a device for receiving and processing signals and sending action instructions, the control center of the combustion heat exchange equipment 10 is connected with the control detection devices such as the gas proportional valve 21, the ignition and feedback integrated device 31, the first temperature sensor 32 and the feedback device 34, the control detection devices can feed sensed information back to the controller 8, and the controller 8 can send adjustment instructions according to the information fed back by the control detection devices, so that the working state of the control detection devices is changed, and the combustion heat exchange equipment 10 is further ensured to be in a good working state. For example: the controller 8 can control the gas proportional valve 21 to change the gas intake amount according to the temperature of the preheating burner 41 fed back by the first temperature sensor 32, so as to achieve the purpose of controlling the temperature of the preheating burner 41 at the set value.

According to the utility model discloses a burning indirect heating equipment 10 adopts flameless catalytic combustion mode, and the gas can the fully reaction burning, from the harmful gas that the source control burning produced to flameless burning is soft steady, and the noise is low. The condensation preheater 9 can absorb the heat of the flue gas, and further improve the energy utilization efficiency.

Referring to fig. 1, in an embodiment of the present invention, the combustion heat exchange device 10 may further include: fan subassembly 5, fan subassembly 5 sets up in the side of giving vent to anger of heat transfer cavity 3, and fan subassembly 5 includes: fan 51 and collection petticoat pipe 52, fan 51 set up on collection petticoat pipe 52, and fan 51 is used for taking out the gas in the heat transfer chamber, and fan 51's inlet end communicates with the heat transfer chamber, and fan 51's the end of giving vent to anger links to each other with condensation preheater 9.

Fan subassembly 5 can set up at the top of burning indirect heating equipment 10, has stronger ability of discharging fume, and fan 51 provides the suction to the flue gas in the heat transfer cavity 3, and fan 51 can be discharged the flue gas to outdoor, forms the negative pressure in the heat transfer cavity 3 of exhaust flue gas, and then inhales the combustion chamber with fresh air and gas, and fan 51 still is connected with controller 8, and 8 adjustable fan 51 rotational speeds of controller are in order to change the suction size.

The smoke collecting hood 52 below the fan 51 provides a flow guiding effect for smoke, and the smoke discharging efficiency of the fan 51 is improved. Fan subassembly 5 can accelerate the 10 exhaust flue gases of burning indirect heating equipment, improves combustion efficiency, and fan subassembly 5 can also carry the flue gas to condensation pre-heater 9, and the high temperature heat that the flue gas carried can transmit the water for condensation pre-heater 9 inside through the mode of heat exchange, can further utilize the heat of flue gas through condensation pre-heater 9 promptly. As shown in fig. 1, the flue gas is entirely passed through the condensation preheater 9, whereby the energy utilization can be further improved.

The condensation preheater 9 is also provided with an air outlet pipe 92, and the air outlet pipe 92 is connected with the outdoor and used for discharging flue gas.

The combustion heat exchange device 10 may further include: and the condensed water treatment device 91, the condensed water treatment device 91 is connected with the condensation preheater 9, and the condensed water treatment device 91 is positioned below the condensation preheater 9.

Because the initial cold water that has inlet tube 6 to come in of storing in condensation preheater 9, the vapor (being the flue gas) that produces after the gas combustion is when condensation preheater 9, condensation preheater 9 can be with the cooling of high temperature vapor, vapor condenses into the comdenstion water, the comdenstion water can collect condensate water processing apparatus 91 of condensation preheater 9 below, prevent that the comdenstion water from pouring backward into the combustion chamber, cause the incident, can also reduce the comdenstion water and drip in burning indirect heating equipment 10, influence the circuit safety in burning indirect heating equipment 10, reduce the rust scheduling problem that the comdenstion water arouses, improve burning indirect heating equipment 10 life-span. The condensed water treatment device 91 can discharge the condensed water out of the combustion heat exchange equipment 10 or convey the condensed water to the water inlet pipe 6 for recycling.

Referring to fig. 2, in another embodiment of the present invention, the combustion heat exchange device 10 may further include: a fan assembly 5, and the fan assembly 5 includes: the smoke collecting hood 52 is arranged on the gas outlet side of the heat exchange cavity 3, and the condensation preheater 9 is arranged between the smoke collecting hood 52 and the heat exchanger.

In other words, condensation pre-heater 9 is at the top of heat transfer chamber, and the flue gas reentries fan subassembly 5 after passing through condensation pre-heater 9 earlier, can make condensation pre-heater 9 absorb a part of gas combustion heat, and can absorb the heat of flue gas more closely, can also utilize the latent heat of flue gas, further improves the thermal efficiency of burning heat transfer equipment 10. In addition, as shown in fig. 2, the condensation preheater 9 is arranged in parallel with the heat exchanger, and the contact area between the flue gas and the condensation preheater 9 is the largest, so that the condensation preheater 9 can absorb the heat of the flue gas to the maximum extent.

Be provided with comdenstion water flange 93 between condensation pre-heater 9 and the heat exchanger, the vapor that produces behind the gas combustion is through condensation pre-heater 9 cooling back, steam condenses into the comdenstion water, the comdenstion water that forms on condensation pre-heater 9 can be collected to comdenstion water flange 93, prevent that the comdenstion water from pouring into the combustion chamber backward, cause the incident, can also reduce the comdenstion water and drip in burning indirect heating equipment 10, influence the circuit safety in burning indirect heating equipment 10, reduce the rust scheduling problem that the comdenstion water arouses, improve burning indirect heating equipment 10 life-span. The condensed water receiving tray 93 can discharge the condensed water out of the combustion heat exchange device 10 or convey the condensed water to the water inlet pipe 6 for recycling.

The combustion heat exchange device 10 further comprises: and the condensed water treatment device 91 is connected with the condensed water receiving disc 93, and the condensed water treatment device 91 is positioned below the condensed water receiving disc 93.

The condensed water collected by the condensed water receiving tray 93 is collected into the condensed water treatment device 91 below due to gravity, and the condensed water treatment device 91 can discharge the condensed water out of the combustion heat exchange equipment 10 or convey the condensed water to the water inlet pipe 6 for recycling.

The fan assembly 5 further includes: a fan 51, in the embodiment of fig. 2, the fan 51 is disposed on the fume collecting hood 52, and the fan 51 is an exhaust fan 51 for exhausting the gas in the heat exchange chamber.

Fan subassembly 5 can set up on the upper portion of condensation pre-heater 9 and heat exchange cavity 3, and fan 51 provides the suction to the flue gas in the heat exchange cavity 3, and fan 51 can be discharged the flue gas to outdoor, forms the negative pressure in the heat exchange cavity 3 of exhaust flue gas, and then inhales fresh air and gas into the combustion chamber, and fan 51 still is connected with controller 8, and the adjustable fan 51 rotational speed of controller 8 to change the suction size.

The smoke collecting hood 52 below the fan 51 provides a flow guiding effect for smoke, and the smoke discharging efficiency of the fan 51 is improved. The fan assembly 5 can accelerate the combustion heat exchange device 10 to discharge smoke, and combustion efficiency is improved.

In some embodiments of the present invention, not shown, the fan assembly 5 further comprises: and the fan 51 is arranged below the burner, and the fan 51 is a blower 51 and is used for blowing air into the heat exchange cavity.

The air blower 51 below the combustion chamber can better control the air inflow of the heat exchange cavity, thereby being beneficial to ensuring the optimal air-fuel ratio when gas is combusted.

The utility model discloses an in some embodiments, the heat exchanger can be multi-stage heat exchanger, and multi-stage heat exchanger's first order heat exchanger is connected with condensation pre-heater 9, and multi-stage heat exchanger's last order heat exchanger is connected with outlet pipe 7, establishes ties each other between the multi-stage heat exchanger to at the inside heat transfer flow path that forms of multi-stage heat exchanger.

In the example of fig. 1-2, the multi-stage heat exchanger is two heat exchangers, the two heat exchangers are a first stage heat exchanger and a second stage heat exchanger, the multi-stage heat exchanger facilitates installation and replacement of the catalytic burner 42, and can increase the amount of water in the heat exchange flow path to improve the hot water supply capacity of the combustion heat exchange device 10. In the combustion heat exchange device 10, the first stage heat exchanger may be made of stainless steel, and a heat exchange waterway structure for passing water is provided around the first stage heat exchanger, and a plurality of pipes for supporting the catalytic combustor 42 are provided in the middle of the first stage heat exchanger. The second-stage heat exchanger can be made of stainless steel, heat exchange fins are embedded in the second-stage heat exchanger, the heat exchange area can be increased through the fins, and therefore the heat exchange efficiency of the heat exchanger can be improved.

The first-stage heat exchanger and the second-stage heat exchanger form a heat exchange flow path in series through an internal pipeline, so that the flow of water in the heat exchange flow path in unit time can be improved, and the speed of outputting hot water by the combustion heat exchange device 10 can be improved.

The flowing water in the heat exchange flow path can absorb and take away the high-temperature heat released by the catalytic combustor 42 during combustion in time, so that the deformation of the water pipe and the heat exchanger shell due to overhigh heated temperature is avoided, and the heated cold water flows out from the water outlet pipe 7 connected with the second-stage heat exchanger, thereby meeting the purpose of using hot water by a user.

Optionally, a catalytic burner 42 is provided between adjacent two of the multi-stage heat exchangers, so that the heat generated by the catalytic combustion can be better radiated to the heat exchangers.

The combustion heat exchange device 10 further comprises: and the water inlet control valve 61 is arranged on the water inlet pipe 6 and used for adjusting the water flow of the heat exchange flow path, and the water inlet control valve 61 is positioned at the water inlet end of the condensation preheater 9.

The water inlet control valve 61 is further connected to the controller 8, and the controller 8 can adjust the amount of the inlet water through the water inlet control valve 61, so as to control the outlet water temperature of the outlet pipe 7, specifically, increasing the amount of the inlet water can reduce the outlet water temperature of the outlet pipe 7, and decreasing the amount of the inlet water can increase the outlet water temperature of the outlet pipe 7.

The combustion heat exchange device 10 further comprises: and the temperature sensor 71 is arranged on the water outlet pipe 7 and used for detecting the water temperature of the heat exchange flow path.

The temperature sensor 71 can be connected with the controller 8 through an electric connection line, and transmits a water temperature signal in the water outlet pipe 7 to the controller 8 as a judgment basis for adjusting the gas quantity and the water inlet quantity, specifically, increasing the gas quantity can increase the water outlet temperature of the water outlet pipe 7, decreasing the gas quantity can decrease the water outlet temperature of the water outlet pipe 7.

The utility model discloses an in some embodiments, burning indirect heating equipment 10 main part is from bottom to top respectively for admitting air cavity 11, mixed gas cavity 12, first order heat exchanger, second grade heat exchanger, fan subassembly 5 connect gradually, and condensation pre-heater 9 can set up in fan subassembly 5 below or top. Water enters from the water inlet pipe 6, is heated by the condensation preheater 9, the first-stage heat exchanger and the second-stage heat exchanger and then flows out from the water outlet pipe 7. A preheating burner 41 is arranged at the joint of the gas mixing cavity 12 and the first-stage heat exchanger, and a catalytic burner 42 is arranged at the joint of the first-stage heat exchanger and the second-stage heat exchanger. Other configurations for the combustion heat exchange apparatus 10 are well known to those skilled in the art and therefore will not be described in detail herein.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean 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, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (12)

1. A combustion heat exchange device, comprising:

the heat exchange cavity is internally provided with a heat exchange cavity;

the heat exchanger is arranged in the heat exchange cavity and is connected with a water inlet pipe and a water outlet pipe, and a heat exchange flow path is formed inside the heat exchanger;

the condensation preheater is arranged on the water inlet pipe, and gas on the gas outlet side of the heat exchange cavity passes through the condensation preheater to transfer heat to the condensation preheater;

a catalytic combustor radiating the heat exchanger with heat generated by catalytic combustion;

a preheating burner disposed opposite the catalytic burner, the preheating burner for heating the catalytic burner.

2. The combustion heat exchange device of claim 1, further comprising: the fan subassembly, the fan subassembly sets up the heat transfer cavity's the side of giving vent to anger, just the fan subassembly includes: fan and collection petticoat pipe, the fan sets up on the collection petticoat pipe, the fan be used for with gas in the heat transfer intracavity is taken out, the end of giving vent to anger of fan with heat transfer chamber intercommunication, the end of giving vent to anger of fan with condensation pre-heater links to each other.

3. The combustion heat exchange device as claimed in claim 2, wherein the condensation preheater is further provided with an air outlet pipe.

4. The combustion heat exchange device of any one of claims 1-3, further comprising: and the condensate water treatment device is connected with the condensation preheater and is positioned below the condensation preheater.

5. The combustion heat exchange device of claim 1, further comprising: a fan assembly, and the fan assembly comprises: the exhaust fume collecting hood is arranged on the air outlet side of the heat exchange cavity, and the condensation preheater is arranged between the exhaust fume collecting hood and the heat exchanger.

6. The combustion heat exchange device of claim 5, wherein a condensate water receiving tray is disposed between the condensate preheater and the heat exchanger.

7. The combustion heat exchange device of claim 6, further comprising: and the condensate water treatment device is connected with the condensate water receiving disc and is positioned below the condensate water receiving disc.

8. The combustion heat exchange device of claim 5, wherein the fan assembly further comprises: the fan, the fan sets up on the collection cigarette cover, the fan is the air exhauster, be used for with the gas in the heat transfer intracavity is taken out.

9. The combustion heat exchange device of claim 5, wherein the fan assembly further comprises: the fan is arranged below the combustor and is an air blower and used for blowing air into the heat exchange cavity.

10. The combustion heat exchange device of claim 1, wherein the heat exchanger is a multi-stage heat exchanger, the first stage heat exchanger of the multi-stage heat exchanger is connected with the condensation preheater, the last stage heat exchanger of the multi-stage heat exchanger is connected with a water outlet pipe, and the multi-stage heat exchangers are connected in series with each other to form the heat exchange flow path inside the multi-stage heat exchanger.

11. The combustion heat exchange device of claim 1, further comprising: and the water inlet control valve is arranged on the water inlet pipe and used for adjusting the water flow of the heat exchange flow path, and the water inlet control valve is positioned at the water inlet end of the condensation preheater.

12. The combustion heat exchange device of claim 1, further comprising: and the temperature sensor is arranged on the water outlet pipe and used for detecting the water temperature of the heat exchange flow path.

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