CN218210119U - Condensation heat exchange device of gas water heater and gas water heater - Google Patents

Abstract

The utility model discloses a condensation heat exchange device of a gas water heater and the gas water heater, which belongs to the technical field of water heaters, wherein the condensation heat exchange device of the gas water heater comprises a condensation heat exchange component, the condensation heat exchange component is provided with a smoke vent and a water outlet, and the condensation heat exchange device also comprises an evaporation component; the evaporation assembly comprises an evaporation box, an electric heating evaporation unit and a flow guide pipe. An evaporation cavity is arranged in the evaporation box; the electric heating evaporation unit is arranged on the evaporation box and used for heating condensed water in the evaporation cavity; one end of the flow guide pipe is communicated with the evaporation cavity, the other end of the flow guide pipe is communicated with the water outlet, and the condensed water generated by the condensation heat exchange assembly is guided into the evaporation cavity through the water outlet and is discharged from the smoke outlet through the water outlet. The utility model discloses carry out evaporation treatment to the comdenstion water that condensation heat exchange assemblies produced, need not to use comdenstion water drainage pipe, even user's house does not reserve comdenstion water drainage pipe, can not influence gas heater's on-the-spot installation yet.

Description

Condensation heat exchange device of gas water heater and gas water heater

Technical Field

The utility model relates to a water heater technical field especially relates to a gas heater's condensation heat transfer device and gas heater.

Background

The gas water heater, also known as a gas water heater, is a gas appliance that uses gas as fuel and transfers heat to cold water flowing through a heat exchanger by combustion heating to prepare hot water. Compared with the common gas water heater, the condensing gas water heater is energy-saving, so that the condensing gas water heater is widely favored by users.

When the condensing gas water heater is used, after the condensing heat exchange assembly performs secondary heat exchange with high-temperature flue gas, condensed water can be generated in a condensing box of the condensing heat exchange assembly; in order to avoid the accumulation of the condensed water in the condensation box to cause backflow, the condensed water needs to be discharged in time. Therefore, the condensation box is provided with a water outlet. However, most users do not reserve a corresponding condensed water drainage pipeline before purchasing the condensing gas water heater, so that when the condensing gas water heater is used, a water accumulation device needs to be additionally arranged or a drainage pipeline needs to be laid, and the condensing gas water heater is inconvenient to use to a certain extent.

SUMMERY OF THE UTILITY MODEL

One of the technical problems solved by the present invention is to provide a condensation heat exchange device for a gas water heater, which can effectively solve the problem that the user does not reserve a corresponding condensed water drainage pipe before purchasing a condensation gas water heater, and thus needs to additionally set a water accumulation device or lay a drainage pipe, and further leads to the inconvenient field installation of the condensation gas water heater.

The utility model discloses the second technical problem who solves provides a gas heater, and it can effectively solve the user and do not reserve corresponding comdenstion water drainage pipe before purchasing condensing gas heater, leads to condensing gas heater's the comparatively inconvenient technical problem of on-the-spot installation.

The first technical problem is solved by the following technical scheme:

a condensation heat exchange device of a gas water heater comprises a condensation heat exchange assembly, wherein the condensation heat exchange assembly is provided with a smoke exhaust port and a water outlet, and the condensation heat exchange device further comprises an evaporation assembly;

the evaporation assembly comprises:

the evaporation box is internally provided with an evaporation cavity;

the electric heating evaporation unit is arranged on the evaporation box and used for heating the condensed water in the evaporation cavity;

and one end of the flow guide pipe is communicated with the evaporation cavity, the other end of the flow guide pipe is communicated with the water outlet, and the flow guide pipe is used for guiding condensed water generated by the condensation heat exchange assembly into the evaporation cavity through the water outlet and discharging the heated water vapor from the smoke outlet.

Gas heater's condensation heat transfer device, compare with the background art, the beneficial effect who has is:

the utility model provides a condensation heat transfer device of gas heater is applied to the gas heater, and honeycomb duct one end communicates with evaporation chamber, and the other end communicates with the outlet, and the comdenstion water that condensation heat transfer subassembly produced leads to evaporation chamber through the outlet; the electric heating evaporation unit heats the condensed water in the evaporation cavity, and the heated water vapor is discharged from the smoke outlet through the water outlet, so that the condensed water of the condensation heat exchange assembly is finally heated, evaporated and discharged.

The condensate water in the condensation heat exchange assembly passes through the guide pipe in a dripping or small-strand water flow mode, so that the guide pipe can convey water vapor and the condensate water simultaneously, a product pipeline structure is simplified, the problems of complex structure, large product volume and complex installation caused by excessive pipelines are avoided, the convenience is brought to field construction, and the installation space of the product can be reduced.

The electric heating evaporation unit is adopted to supply heat to the evaporation box independently, so that the working efficiency of the evaporation box is improved, and the working efficiency of the gas water heater is also ensured.

In one embodiment, the electrically heated evaporation unit is disposed in the evaporation chamber.

In one embodiment, the electrically heated evaporation unit comprises:

an electrical heating element;

the electric heating element is arranged in the water-proof box, and the water-proof box is arranged in the evaporation cavity.

In one embodiment, the electrically heated evaporation unit is arranged on the outer surface of the evaporation box.

In one embodiment, the electric heating evaporation unit comprises an electric heating element and an insulating layer, the electric heating element is arranged on the outer surface of the evaporation box, and the insulating layer covers one side of the electric heating element, which is far away from the evaporation box.

In one embodiment, at least one side of the outer surface of the evaporation tank is provided with the electrically heated evaporation unit.

In one embodiment, the evaporation chamber comprises:

one end of the flow guide pipe is communicated with the first evaporation cavity;

the second evaporation cavity is located below the first evaporation cavity and communicated with the first evaporation cavity, the cross-sectional area of the first evaporation cavity is a fixed value, the area of any cross section of the second evaporation cavity is smaller than that of the first evaporation cavity, and the electric heating evaporation unit is arranged at the bottom of the second evaporation cavity.

In one embodiment, the evaporation assembly further comprises:

the water level sensor is arranged in the evaporation cavity and is electrically connected with the electric heating evaporation unit; and/or

And the temperature sensor is arranged in the evaporation cavity and is electrically connected with the electric heating evaporation unit.

The second technical problem is solved by the following technical solutions:

the utility model provides a gas water heater, includes foretell gas water heater's condensation heat transfer device, condensation heat transfer device is equipped with into mouth, water inlet and delivery port, advance the flue gas passageway intercommunication of mouth and gas water heater, the delivery port is connected gas water heater's heat transfer end of intaking, the water inlet is used for connecting outside inlet tube.

Gas heater, compare with the background art, the beneficial effect who has is:

the gas water heater comprises the condensation heat exchange device of the gas water heater, when the gas water heater works, one end of a flow guide pipe of the condensation heat exchange device is communicated with the evaporation cavity, the other end of the flow guide pipe of the condensation heat exchange device is communicated with the water outlet, and condensed water generated by the condensation heat exchange assembly is guided into the evaporation cavity through the water outlet; the electric heating evaporation unit heats the condensed water in the evaporation cavity, and the heated water vapor is discharged from the smoke outlet through the water outlet, so that the condensed water of the condensation heat exchange component is finally heated, evaporated and discharged.

The condensate water in the condensation heat exchange assembly passes through the guide pipe in a dripping or small-strand water flow mode, so that the guide pipe can convey water vapor and the condensate water simultaneously, a product pipeline structure is simplified, the problems of complex structure, large product volume and complex installation caused by excessive pipelines are avoided, the convenience is brought to field construction, and the installation space of the product can be reduced.

The electric heating evaporation unit is adopted to supply heat to the evaporation box independently, so that the working efficiency of the evaporation box is improved, and the working efficiency of the gas water heater is also ensured.

In one embodiment, the evaporation assembly of the condensation heat exchange device is arranged outside the combustion heat exchange device of the gas water heater and is configured to be independent from the combustion heat exchange device and not in thermal contact with the combustion heat exchange device.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a gas water heater provided by an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of an electric heating evaporation unit provided by the embodiment of the present invention and disposed in an evaporation chamber;

fig. 3 is a front view of an electric heating element disposed on an insulation layer according to an embodiment of the present invention;

fig. 4 is a top view of an electric heating element disposed on an insulating layer according to an embodiment of the present invention;

fig. 5 is a schematic structural view of the insulating layer of the box-shaped structure provided by the embodiment of the present invention;

FIG. 6 is a schematic view of one form of evaporation box provided by embodiments of the present invention;

fig. 7 is a schematic view of another form of evaporation box provided by the embodiment of the present invention;

fig. 8 is a schematic structural diagram of a view angle of a condensation box according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of another view angle of the condensation box according to the embodiment of the present invention.

Description of the reference symbols:

100. a condensation heat exchange assembly; 101. a condensing box; 1011. a mounting cavity; 1012. a water outlet; 1013. a smoke exhaust pipe; 1014. a smoke inlet pipe; 1015. a stopper; 102. a condenser; 103. an external water inlet pipe; 104. a water outlet pipe;

200. a combustion heat exchange device;

1. an evaporation tank; 11. an evaporation chamber; 111. a first evaporation chamber; 112. a second evaporation chamber;

2. a flow guide pipe;

3. an electrically heated evaporation unit; 31. an electrical heating element; 32. a heat-insulating layer; 321. a first connection portion; 33. a water-insulating box; 4. a water level sensor;

5. a temperature sensor.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements related to the present invention are shown in the drawings.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. 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 description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection or a detachable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1 to 9, the embodiment provides a condensation heat exchange device of a gas water heater, which can evaporate condensed water discharged from a condensation heat exchange assembly 100 of the gas water heater, so as to reduce the difficulty of field installation of the gas water heater.

Specifically, referring to fig. 1, 8 and 9, in this embodiment, the condensation heat exchange device of the gas water heater includes a condensation heat exchange assembly 100, the condensation heat exchange assembly 100 is provided with a smoke exhaust port and a water discharge port 1012, when the condensation heat exchange assembly 100 works, condensed water can be generated in the condensation heat exchange assembly 100, and in the prior art, a condensed water discharge pipe is generally externally connected to the water discharge port 1012, so that the condensed water generated by the condensation heat exchange assembly 100 is discharged. However, most users do not reserve a corresponding condensed water drainage pipeline before purchasing the condensing gas water heater, so that when the condensing gas water heater is used, a water accumulation device needs to be additionally arranged or a drainage pipeline needs to be laid, and the condensing gas water heater is inconvenient to use to a certain extent.

In the prior art, there is also a condensate water treatment method using a condensate-free drain pipe, which is in thermal contact with a heat exchanger of a water heater, and heats condensate water by the heat exchanger to vaporize the condensate water and finally discharges the condensate water from a flow guide pipe. However, this method increases the complexity of the layout of the internal components and pipes of the water heater, and also reduces the thermal efficiency to some extent, which affects the working efficiency of the water heater.

In this embodiment, in order to avoid additionally setting up the ponding device or laying drainage pipe, realize the processing to condensation heat exchange assemblies 100 exhaust comdenstion water simultaneously, in this embodiment, condensation heat exchange devices still includes the evaporation subassembly, carries out evaporation treatment by the evaporation subassembly to condensation heat exchange assemblies 100 exhaust comdenstion water.

Specifically, the evaporation assembly comprises an evaporation tank 1, an electric heating evaporation unit 3 and a draft tube 2.

An evaporation cavity 11 is arranged in the evaporation box 1.

The electric heating evaporation unit 3 is arranged on the evaporation tank 1 and used for heating the condensed water in the evaporation cavity 11.

One end of the draft tube 2 is communicated with the evaporation cavity 11, and the other end is communicated with the water outlet 1012, so that condensed water generated by the condensation heat exchange assembly 100 is guided into the evaporation cavity 11 through the water outlet 1012, and the heated water vapor is discharged from the smoke outlet through the water outlet 1012.

When the condensation heat exchange device of the gas water heater provided by the embodiment is applied to the gas water heater, one end of the draft tube 2 is communicated with the evaporation cavity 11, the other end of the draft tube is communicated with the water outlet 1012, and condensed water generated by the condensation heat exchange assembly 100 is guided into the evaporation cavity 11 through the water outlet 1012; the electric heating evaporation unit 3 heats the condensed water in the evaporation cavity 11, and the heated water vapor is discharged from the smoke outlet through the drainage outlet 1012 via the drainage pipe 2, so that the condensed water of the condensation heat exchange assembly 100 is heated, evaporated and discharged.

In the actual work process, the comdenstion water production speed in the condensation heat exchange assemblies 100 is slower, the comdenstion water in the condensation heat exchange assemblies 100 passes honeycomb duct 2 with the mode of drippage or little gang rivers to make honeycomb duct 2 can carry vapor and comdenstion water simultaneously, simplify the product pipeline structure, avoid complicated structure because of the pipeline is too much to cause, the great and loaded down with trivial details problem of installation of product volume, the site operation of being convenient for, also can reduce the installation space of product.

In this condensation heat transfer device, carry out the evaporation treatment by the comdenstion water that evaporation subassembly produced in to condensation heat transfer subassembly 100, realize the heating evaporation emission to the comdenstion water of condensation heat transfer subassembly 100, need not to reserve comdenstion water drainage pipe, the on-the-spot gas heater of being convenient for is installed and is under construction, helps gas heater's popularization and application. Meanwhile, the condensed water absorbs heat and becomes high-temperature steam, so that the steam and the flue gas are discharged from the smoke outlet together, and the smoke exhaust temperature can be increased. In the subsequent use, the user need not frequently to clear up the comdenstion water that gathers, and convenient to use has promoted user's use and has experienced. Even if the condensed water drainage pipeline is not reserved in the house of the user, the field installation of the gas water heater cannot be influenced.

Meanwhile, in the embodiment, the electric heating evaporation unit 3 is adopted to independently supply heat to the evaporation tank 1, so that the working efficiency of the evaporation tank 1 is improved, and the working efficiency of the gas water heater is also ensured.

Example two

Referring to fig. 1 and fig. 2, the present embodiment provides a condensation heat exchange device of a gas water heater, which is further improved on the basis of the first embodiment.

Specifically, in the present embodiment, the electrically heated evaporation unit 3 is disposed in the evaporation chamber 11.

In this embodiment, set up electrical heating evaporation unit 3 in evaporation chamber 11, avoid electrical heating evaporation unit 3's heat transfer to the air and cause the heat loss, the energy saving guarantees the evaporation efficiency of evaporation chamber 11.

EXAMPLE III

Referring to fig. 1 and fig. 2, the present embodiment provides a condensation heat exchange device of a gas water heater, which is further improved on the basis of the second embodiment.

Specifically, in the present embodiment, the electric heating evaporation unit 3 includes an electric heating element 31 and a water-stop box 33.

The electric heating element 31 is arranged in a water-proof box 33, and the water-proof box 33 is arranged in the evaporation cavity 11.

The condensed water generated by the condensation heat exchange assembly 100 has certain corrosivity, the electric heating element 31 is arranged in the water-proof box 33, the water-proof and anti-corrosion protection is carried out on the electric heating element 31 by the water-proof box 33, and the normal work and the service life of the electric heating element 31 are ensured.

Alternatively, the material of the water-proof box 33 is stainless steel, but may be other metal material with corrosion resistance, and the material is not limited to this.

Example four

Referring to fig. 1, 6 and 7, the present embodiment provides a condensation heat exchange device of a gas water heater, which is further improved on the basis of the first embodiment.

Specifically, in the present embodiment, the electrically heated evaporation unit 3 is provided on the outer surface of the evaporation tank 1. The electric heating evaporation unit 3 generates heat after being electrified, and transfers the heat into the evaporation cavity 11, so that the water in the evaporation cavity 11 is evaporated.

With electrical heating evaporation unit 3 setting at the surface of evaporating case 1, electrical heating evaporation unit 3 can not produce direct contact with the comdenstion water in the evaporation chamber 11, avoids the corruption to electrical heating evaporation unit 3 to guarantee electrical heating evaporation unit 3's security performance and life.

Preferably, in this embodiment, the draft tube 2 is vertically arranged from bottom to top, so that the condensed water in the condensation heat exchange assembly 100 can rapidly flow into the evaporation chamber 11. The electric heating evaporation unit 3 generates heat to heat the condensed water in the evaporation cavity 11, so that the water in the evaporation cavity 11 is evaporated and vaporized.

EXAMPLE five

Referring to fig. 1, 3 and 4, the present embodiment provides a condensation heat exchange device of a gas water heater, which further improves the condensation heat exchange device of the gas water heater on the basis of the fourth embodiment.

Specifically, in this embodiment, the electric heating evaporation unit 3 includes an electric heating element 31 and a heat insulating layer 32, the electric heating element 31 is disposed on the outer surface of the evaporation box 1, and the heat insulating layer 32 covers one side of the electric heating element 31 away from the evaporation box 1.

Optionally, an insulating layer 32 is attached to the outer surface of the evaporation tank 1.

The electric heating element 31 generates heat after being electrified, and transfers the heat into the evaporation cavity 11, so that the water in the evaporation cavity 11 is evaporated and vaporized. The heat-insulating layer 32 covers one side of the electric heating element 31 departing from the evaporation box 1, so that the heat of the electric heating element 31 is prevented from being dissipated in the ambient air to influence the working efficiency of the evaporation assembly, the heat of the electric heating element 31 is ensured to be transmitted to the evaporation box 1 as much as possible, and the evaporation efficiency of the evaporation cavity 11 is ensured.

Alternatively, in the present embodiment, the electric heating element 31 may be a heating wire, a heating rod, or a heating plate.

Specifically, in this embodiment, the electric heating element 31 is a heating wire, and the heating wire is arranged in a serpentine shape, so as to ensure that the heating wire is arranged as long as possible in a limited area, thereby ensuring the heating efficiency. The insulating layer 32 is made of insulating cotton.

Further, in order to protect the insulating layer 32 and ensure the service life of the insulating layer 32, in this embodiment, the insulating layer 32 may be encapsulated by a metal shell.

Further, referring to fig. 5, the insulating layer 32 may also be a box-shaped structure, and a heat insulating cavity is disposed in the box-shaped structure, and the box-shaped structure encloses the electric heating element 31 therein to prevent heat of the electric heating element 31 from dissipating into the surrounding air. The side of the box-like structure facing the evaporation tank 1 is provided with an opening to accommodate the electric heating element 31 in the insulating cavity. Furthermore, the inside wall of box structure all pastes and is equipped with the heated board. Alternatively, the insulation board may be a plastic foam board.

Further, when heat preservation layer 32 is box structure, in order to conveniently realize the installation of heat preservation layer 32 on evaporating box 1, box structure's both ends are provided with a first connecting portion 321 respectively, are provided with the second connecting portion with first connecting portion 321 one-to-one on evaporating box 1, and first connecting portion 321 passes through threaded connection and connects on the second connecting portion to realize the installation of box structure on evaporating box 1.

Optionally, the first connection portion 321 and the second connection portion are both plate-shaped structures.

Example six

Referring to fig. 1, fig. 3 and fig. 4, the present embodiment provides a condensation heat exchange device for a gas water heater, which further improves the condensation heat exchange device for a gas water heater on the basis of the fourth embodiment.

Specifically, in the present embodiment, at least one side of the outer surface of the evaporation box 1 is provided with an electrically heated evaporation unit 3.

Optionally, the bottom surface of the evaporation box 1 is provided with an electric heating evaporation unit 3; and/or

The side of the evaporation box 1 is provided with an electric heating evaporation unit 3.

Preferably, the bottom surface of the evaporation tank 1 is provided with an electrically heated evaporation unit 3. So set up, no matter how much the water yield in the evaporation chamber 11, the comdenstion water in the evaporation chamber 11 can both be given in the fastest transmission to the heat of electrical heating evaporation unit 3, guarantees the evaporation efficiency in evaporation chamber 11.

Specifically, in this embodiment, the electric heating evaporation unit 3 includes an electric heating element 31 and a heat insulating layer 32, the electric heating element 31 is disposed on the bottom surface of the evaporation box 1, and the heat insulating layer 32 covers a side of the electric heating element 31 away from the evaporation box 1.

EXAMPLE seven

The embodiment provides a condensation heat exchange device of a gas water heater, which is further improved on the basis of the first embodiment.

Specifically, referring to fig. 6 and 7, in the present embodiment, the evaporation chamber 11 includes a first evaporation chamber 111 and a second evaporation chamber 112.

One end of the draft tube 2 is communicated with the first evaporation chamber 111.

The second evaporation cavity 112 is located below the first evaporation cavity 111 and is communicated with the first evaporation cavity 111, the cross-sectional area of the first evaporation cavity 111 is a fixed value, the area of any cross section of the second evaporation cavity 112 is smaller than that of the first evaporation cavity 111, and the electric heating evaporation unit 3 is arranged at the bottom of the second evaporation cavity 112.

The arrangement of the first evaporation cavity 111 ensures that condensed water can be stored in the evaporation cavity 11 as much as possible, and more time can be reserved for the electric heating evaporation unit 3 to evaporate the condensed water in the evaporation cavity 11; the second evaporation cavity 112 is arranged, so that when the water level in the evaporation cavity 11 is low, the residual condensed water is relatively gathered together, and the heat of the condensed water in the evaporation cavity 11 is more concentrated, thereby accelerating the vaporization of the condensed water and saving energy.

Meanwhile, the area of any cross section of the second evaporation cavity 112 is smaller than the cross section of the first evaporation cavity 111, that is, the bottom area of the second evaporation cavity 112 is smaller than the cross section of the first evaporation cavity 111, and when the electric heating evaporation unit 3 is arranged at the bottom of the second evaporation cavity 112, the electric heating evaporation unit 3 with a smaller size can be selected, so that the cost is saved.

Preferably, the electric heating evaporation unit 3 is disposed outside the bottom plate of the second evaporation chamber 112 or inside the bottom plate of the second evaporation chamber 112.

Illustratively, referring to fig. 6, the cross-sectional area of the second evaporation chamber 112 is gradually reduced in a direction away from the first evaporation chamber 111. Specifically, the first evaporation chamber 111 is shaped as a rectangular parallelepiped or a cylinder; the second evaporation cavity 112 is in the shape of an inverted cone; for example, the first evaporation chamber 111 has a cylindrical shape, and the second evaporation chamber 112 has an inverted circular truncated cone shape.

Illustratively, referring to fig. 7, the first evaporation chamber 111 and the second evaporation chamber 112 are each rectangular parallelepiped, and the cross-sectional area of the second evaporation chamber 112 is smaller than that of the first evaporation chamber 111.

Example eight

The embodiment provides a condensation heat exchange device of a gas water heater, which is further improved on the basis of the first embodiment.

In particular, referring to fig. 6 and 7, in the present embodiment, the evaporation assembly further comprises a water level sensor 4 and/or a temperature sensor 5.

Specifically, the water level sensor 4 is disposed in the evaporation chamber 11 and electrically connected to the electric heating evaporation unit 3; and/or

The temperature sensor 5 is disposed in the evaporation chamber 11, and is electrically connected to the electric heating evaporation unit 3.

The electric heating evaporation unit 3 adjusts the heating operation thereof according to the water level information detected by the water level sensor 4 and/or the temperature information detected by the temperature sensor 5.

Exemplarily, in the present embodiment, the electrically heated evaporation unit 3 is disposed on the outer surface of the bottom of the evaporation tank 1, and the temperature sensor 5 is disposed on the inner surface of the bottom surface of the evaporation chamber 11; when the temperature sensor 5 detects that the temperature of the bottom plate of the evaporation box 1 is lower than the evaporation temperature of water, the temperature sensor 5 sends a first signal to the electric heating evaporation unit 3, and the electric heating evaporation unit 3 increases the heating power until the temperature sensor 5 detects that the temperature of the bottom plate of the evaporation box 1 is not lower than the evaporation temperature of water.

Exemplarily, when the water level sensor 4 detects that the water level in the evaporation cavity 11 is not greater than the preset liquid level, the water level sensor 4 sends a second signal to the electric heating evaporation unit 3, and at this time, the remaining water amount is less, and the electric heating evaporation unit 3 can reduce the heating power, thereby avoiding energy waste.

Example nine

Referring to fig. 1, the embodiment provides a gas water heater, which includes the condensation heat exchange device of the gas water heater, the condensation heat exchange device is provided with a smoke inlet, a water inlet and a water outlet, the smoke inlet is communicated with a flue gas channel of the gas water heater, the water outlet is connected with a heat exchange water inlet end of the gas water heater, and the water inlet is used for connecting an external water inlet pipe 103. Specifically, the water outlet is connected to the heat exchange water inlet end through a water outlet pipe 104.

Specifically, in the present embodiment, the gas water heater is a condensing gas water heater.

Compared with the common gas water heater, the condensing gas water heater has obvious energy-saving effect, thereby being widely favored by users.

In the prior art, when a gas water heater is installed, a section of drain pipe is connected to the drain outlet 1012, and in order to fix and guide the drain pipe, a condensate water drain pipe matched with the drain pipe needs to be reserved in a user home. However, most users do not reserve a corresponding condensed water drainage pipeline before purchasing the condensing gas water heater, so that the field installation of the condensing gas water heater is inconvenient.

When the gas water heater provided by the embodiment works, external water sequentially enters the condensation heat exchange device through the external water inlet pipe 103 and the water inlet to exchange heat; after the heat exchange is finished, the water flows out of the water outlet to the combustion heat exchange device 200 of the gas water heater. During the heat exchange process, condensed water can be generated in the condensation heat exchange device. The evaporation assembly of the condensation heat exchange device is used for evaporating the condensed water generated by the condensation heat exchange assembly 100, so that a corresponding condensed water drainage pipeline does not need to be reserved, and the field installation difficulty of the gas water heater is reduced.

EXAMPLE ten

Referring to fig. 1, the present embodiment provides a gas water heater, which is further improved on the basis of the ninth embodiment.

Specifically, in the present embodiment, the evaporation assembly of the condensation heat exchange device is disposed outside the combustion heat exchange device 200 of the gas water heater, and is configured to be independent from the combustion heat exchange device 200 and not disposed in thermal contact with the combustion heat exchange device 200.

In this embodiment, the evaporation assembly of the condensation heat exchanger is disposed outside the combustion heat exchanger 200 of the gas water heater, and is configured to be independent from the combustion heat exchanger 200 and to be disposed in thermal contact with the combustion heat exchanger 200, so as to prevent the evaporation assembly from absorbing heat of the combustion heat exchanger 200 and then affecting the working efficiency of the combustion heat exchanger 200.

EXAMPLE eleven

Referring to fig. 1, the present embodiment provides a gas water heater, which is further improved on the basis of the ninth embodiment.

Specifically, in this embodiment, the gas water heater includes a condensation heat exchange device and a combustion heat exchange device 200. A flue gas channel is arranged in the combustion heat exchange device 200, and high-temperature flue gas can smoothly circulate along the flue gas channel. The combustion heat exchange device 200 includes a burner, a heat exchanger, and a combustion chamber between the burner and the heat exchanger. The combustor sets up in the below of heat exchanger, is provided with the burning chamber in the burning chamber, is provided with the heat transfer chamber in the heat exchanger, and burning chamber and heat transfer chamber communicate each other and form flue gas passageway. When the gas water heater works, the mixed gas of combustible gas and air is combusted in the combustion cavity to generate high-temperature flue gas, and the high-temperature flue gas flows upwards into the heat exchange cavity to exchange heat with the heat exchange assembly, so that heat exchange media such as water are heated.

The condensation heat exchange device is arranged beside the combustion heat exchange device 200. The condensation heat exchange device comprises a condensation heat exchange assembly 100 and an evaporation assembly.

Specifically, referring to fig. 8 and 9, the condensation heat exchange assembly 100 includes a condensation box 101 and a condenser 102.

Specifically, condensation box 101 includes the condensation box body, and this internal installation cavity 1011 that is provided with of condensation box still is provided with outlet 1012, exhaust port and the inlet flue that communicates with flue gas passageway on the condensation box 101, and exhaust port department is connected with the pipe 1013 of discharging fume, and inlet flue department is connected with into tobacco pipe 1014, enters tobacco pipe 1014 and burns heat transfer device 200's flue gas passageway intercommunication.

Specifically, the smoke outlet is disposed at the upper end of the condensation box body, the smoke inlet is disposed at the side of the condensation box body, and the water outlet 1012 is disposed at the lower end of the condensation box body. Further, a smoke exhaust pipe 1013 is connected to the smoke exhaust port.

The condenser 102 is installed in the installation cavity 1011 in a screw connection or clamping connection mode and the like; preferably, the condenser 102 is spaced apart from the drain port 1012 so that the drainage of the condensed water inside the condensation case 101 does not affect the normal operation of the condenser 102. Specifically, the condenser 102 is an existing condensing element capable of exchanging heat with high-temperature flue gas.

Referring to fig. 1, when the gas water heater is in operation, high-temperature flue gas flowing out of the heat exchange cavity enters the installation cavity 1011 through the smoke inlet pipe 1014 and carries out secondary heat exchange with the condenser 102, the high-temperature flue gas after the secondary heat exchange is discharged through the smoke exhaust pipe 1013, condensed water is generated in the condensation box 101, in order to avoid the condensed water from accumulating in the condensation box 101 and flowing backwards, a water outlet 1012 is arranged on the condensation box 101, and the condensed water generated in the condensation box 101 flows out through the water outlet 1012. Further, in the present embodiment, a stopper 1015 is disposed in the condensation box 101, and the stopper 1015 is disposed in the installation cavity 1011 and located between the condenser 102 and the drainage outlet 1012. Through setting up and stopping piece 1015, when the vapor in the evaporation chamber 11 got into installation cavity 1011 through outlet 1012, stop the effect of stopping of 1015 under, avoid vapor and condenser 102 contact and influence the normal work of condenser 102 to avoid vapor to cause the interference to the secondary heat transfer of high temperature flue gas and condenser 102, guarantee the normal clear of heat transfer.

In the present embodiment, the stop 1015 has an arc cross-section, and the stop 1015 is disposed perpendicular to the bottom surface of the mounting cavity 1011, at least partially surrounds the drain 1012 and blocks between the drain 1012 and the condenser 102, so as to prevent direct contact with the condenser 102 after entering the mounting cavity 1011 from the drain 1012.

In the detailed description of the embodiments, various technical features may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The detailed description of the above embodiments only expresses several embodiments of the present invention, and the description thereof is more specific and detailed, but should not be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The condensation heat exchange device of the gas water heater comprises a condensation heat exchange assembly (100), wherein the condensation heat exchange assembly (100) is provided with a smoke exhaust port and a water discharge port (1012), and is characterized by further comprising an evaporation assembly;

the evaporation assembly comprises:

the evaporation box (1) is internally provided with an evaporation cavity (11);

the electric heating evaporation unit (3) is arranged on the evaporation box (1) and is used for heating condensed water in the evaporation cavity (11);

and one end of the flow guide pipe (2) is communicated with the evaporation cavity (11), the other end of the flow guide pipe is communicated with the water outlet (1012), and the flow guide pipe is used for guiding condensed water generated by the condensation heat exchange assembly (100) into the evaporation cavity (11) through the water outlet (1012) and discharging heated generated water vapor from the smoke outlet through the water outlet (1012).

2. Condensation heat exchange device of a gas water heater according to claim 1, characterized in that said electrically heated evaporation unit (3) is arranged in said evaporation chamber (11).

3. Condensation heat exchange device for gas water heaters, according to claim 2, characterized in that the electrically heated evaporation unit (3) comprises:

an electric heating element (31);

a water-insulating box (33), the electric heating element (31) being arranged inside the water-insulating box (33), the water-insulating box (33) being arranged in the evaporation chamber (11).

4. The condensation heat exchange device of a gas water heater according to claim 1, characterized in that the electrically heated evaporation unit (3) is arranged on the outer surface of the evaporation tank (1).

5. Condensation and heat exchange device of a gas water heater according to claim 4, characterized in that the electric heating and evaporation unit (3) comprises an electric heating element (31) and an insulating layer (32), the electric heating element (31) is arranged on the outer surface of the evaporation tank (1), and the insulating layer (32) covers the side of the electric heating element (31) away from the evaporation tank (1).

6. Condensation heat exchange device of a gas water heater according to claim 4, characterized in that at least one side of the outer surface of the evaporation tank (1) is provided with said electrically heated evaporation unit (3).

7. Condensation heat exchange unit for gas water heaters according to any one of claims 1 to 6, characterized in that the evaporation chamber (11) comprises:

the first evaporation cavity (111), one end of the draft tube (2) is communicated with the first evaporation cavity (111);

the second evaporation cavity (112) is located below the first evaporation cavity (111) and communicated with the first evaporation cavity (111), the cross-sectional area of the first evaporation cavity (111) is a fixed value, the area of any cross section of the second evaporation cavity (112) is smaller than that of the first evaporation cavity (111), and the electric heating evaporation unit (3) is arranged at the bottom of the second evaporation cavity (112).

8. The condensing and heat exchanging device of a gas water heater as claimed in claim 1, wherein said evaporation assembly further comprises:

the water level sensor (4) is arranged in the evaporation cavity (11) and is electrically connected with the electric heating evaporation unit (3); and/or

The temperature sensor (5) is arranged in the evaporation cavity (11) and is electrically connected with the electric heating evaporation unit (3).

9. A gas water heater, characterized in that, the gas water heater comprises the condensation heat exchange device of the gas water heater as claimed in any one of claims 1 to 8, the condensation heat exchange device is provided with a smoke inlet, a water inlet and a water outlet, the smoke inlet is communicated with a smoke channel of the gas water heater, the water outlet is connected with a heat exchange water inlet end of the gas water heater, and the water inlet is used for connecting with an external water inlet pipe (103).

10. The gas water heater of claim 9, wherein the evaporation assembly of the condensation heat exchange device is disposed outside of the combustion heat exchange device (200) of the gas water heater and is configured to be independent of and in thermal contact with the combustion heat exchange device (200).

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