CN214501707U - Waste heat absorption assembly and gas water heater - Google Patents

Abstract

The utility model relates to a waste heat absorption subassembly and gas heater, waste heat absorption subassembly include flue gas shell and second heat exchange coil, the flue gas shell encloses into flue gas heat transfer passageway, flue gas heat transfer passageway can communicate with the heat exchanger among the gas heater, second heat exchange coil sets up in the flue gas heat transfer passageway. When the smoke in the heat exchanger passes through the smoke heat exchange channel, the smoke exchanges heat with the water in the second heat exchange coil pipe, and then the heat in the waste smoke exhausted from the heat exchanger is absorbed and utilized. The heat utilization rate is integrally improved, the energy is saved, the final emission temperature of the flue gas is reduced, and the environment is protected.

Description

Waste heat absorption assembly and gas water heater

The present application is a divisional application of the patent application entitled "gas water heater and residual heat absorbing assembly" and having application number 2020218636510, filed on even 31/8/2020.

Technical Field

The utility model relates to a water heater technical field especially relates to waste heat absorption subassembly and gas heater.

Background

The gas water heater is a device which utilizes gas to be combusted in a combustor to form flame and smoke and utilizes the flame and the smoke to heat water in a heat exchange pipe for users to use. The heat of the flame and the flue gas exchanges heat with water in a heat exchange pipe outside the heat exchanger when passing through the heat exchanger. In the practical use process, the heat in the heat exchanger is only partially absorbed by the water in the heat exchange pipe, and partial heat is discharged out of the heat exchanger along with the flue gas, so that the heat utilization rate of the common gas water heater is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses there is the problem that heat utilization rate is low to general gas heater, provided a waste heat absorption subassembly and gas heater, wherein follow heat in the heat exchanger exhaust flue gas still can be absorbed by the water in the second heat exchange coil, further promotes heat utilization rate.

The waste heat absorption assembly comprises a smoke shell and a second heat exchange coil, wherein the smoke shell is enclosed into a smoke heat exchange channel, the smoke heat exchange channel can be communicated with a heat exchanger in a gas water heater, and the second heat exchange coil is arranged in the smoke heat exchange channel.

Above-mentioned scheme provides a waste heat absorption subassembly, can be used for among the gas heater, when the flue gas in the heat exchanger is in the process during flue gas heat transfer passageway, the flue gas with water among the second heat transfer coil carries out the heat transfer, and then will follow originally heat absorption utilization in the exhaust waste flue gas in the heat exchanger. The heated water in the second heat exchange coil is conveyed to the first heat exchange coil outside the heat exchanger, and the water in the second heat exchange coil further absorbs the heat of the flue gas in the heat exchanger and is used by a user after being heated. The heat utilization rate is integrally improved, the energy is saved, the final emission temperature of the flue gas is reduced, and the environment is protected.

In one embodiment, a mounting channel is arranged on the flue gas shell, the mounting channel extends from the top end to the bottom end of the flue gas shell, the second heat exchange coil comprises a spiral coil and an auxiliary pipe section, the spiral coil is located in the flue gas heat exchange channel, one end, close to the top end of the flue gas shell, of the spiral coil is communicated with the auxiliary pipe section, the other end of the spiral coil is a water inlet end, the auxiliary pipe section is arranged along the mounting channel and extends to the bottom end of the flue gas shell, and one end, located at the bottom end of the flue gas heat exchange channel, of the auxiliary pipe section is a water outlet end.

In one embodiment, the spiral coil is arranged along the axial direction of the flue gas heat exchange channel, and the spiral coil is abutted against the side wall of the flue gas heat exchange channel.

In one embodiment, the pipe diameter of the second heat exchange pipe is 5mm or 10 mm.

In one embodiment, the second heat exchange coil has a wall thickness of 0.2mm or 0.4 mm.

In one embodiment, the second heat exchange coil is made of copper material, and the flue gas shell is made of copper material.

The utility model provides a gas water heater, includes combustor, heat exchanger and foretell waste heat absorption assembly, heat exchanger is equipped with first heat transfer coil outward, the combustor with heat exchanger intercommunication makes the high temperature flue gas that the combustor burning formed can get into heat exchanger, flue gas heat transfer passageway with heat exchanger intercommunication, second heat transfer coil's delivery port with first heat transfer coil's water inlet intercommunication.

The above scheme provides a gas heater, and in the use, the heat of burning is except being absorbed by the water in first heat exchange coil in heat exchanger, and the exhaust flue gas of heat exchanger is in when passing through waste heat absorption subassembly, the water in the second heat exchange coil further absorbs the surplus heat in the flue gas, and the water in the second heat exchange coil is after absorbing surplus heat and rising the temperature, carries to again first heat exchange coil. Therefore, the heat generated by the gas water heater during working is fully utilized, and the target temperature can be reached by consuming less fuel under the condition that the outlet water temperature of the gas water heater is set, so that the heat utilization rate is improved, and the gas water heater is energy-saving and environment-friendly.

In one embodiment, the gas water heater further comprises a fan for blowing out the smoke in the heat exchanger, and the smoke shell is communicated with an outlet of the fan and a smoke pipe of the gas water heater.

In one embodiment, the gas water heater further comprises a heat insulation water tank and a panel shell, the burner and the heat exchanger are arranged opposite to the panel shell at intervals, the heat insulation water tank covers the side face, facing the panel shell, of the burner and the heat exchanger, a water outlet is formed in the heat insulation water tank, and a water inlet of the second heat exchange coil is communicated with the water outlet of the heat insulation water tank.

In one embodiment, the heat insulation water tank is of a plate-shaped structure, the two side surfaces of the heat insulation water tank with larger area are a front plate and a rear plate, the front plate is opposite to the panel shell, the rear plate is opposite to the burner and the heat exchanger, and the outlet of the heat insulation water tank is positioned on the top end surface of the heat insulation water tank.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an exploded view of a gas water heater according to the present embodiment;

FIG. 2 is a cross-sectional view of a hot water tank in the gas water heater of FIG. 1;

FIG. 3 is a schematic structural diagram of the waste heat absorbing assembly according to the present embodiment;

fig. 4 is a cross-sectional view of the residual heat absorbing assembly shown in fig. 3.

Description of reference numerals:

10. a gas water heater; 11. a panel housing; 12. a housing; 13. a heat-insulating water tank; 131. a front plate; 132. a back plate; 14. a waste heat absorbing assembly; 141. a flue gas housing; 1411. a flue gas heat exchange channel; 1412. installing a channel; 142. a second heat exchange coil; 1421. a heat exchange channel; 1422. a helical coil; 1423. an auxiliary pipe section; 1424. a water inlet end; 1425. and (5) a water outlet end.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1, in one embodiment, a gas water heater 10 is provided, the gas water heater 10 including a gas heating device (not shown) for heating water for a user by combustion. In the use process, the gas heating device ignites and burns gas, and the smoke generated by burning has high temperature.

Specifically, the gas heating device may include a burner and a heat exchanger (not shown in the figure), the burner may ignite and burn gas, flue gas formed by combustion enters the heat exchanger, a first heat exchange coil is arranged outside the heat exchanger, and the first heat exchange coil is communicated with cold water pipelines such as a tap water pipe. The cold water in the first heat exchange coil absorbs the heat of the smoke in the heat exchanger and then becomes hot water. The heat in the gas heating device cannot be completely absorbed by the water in the first heat exchange coil, and if the heat which is not absorbed is further transferred to the shell of the gas water heater 10, the risk of scalding exists. In particular the panel housing 11 of the gas water heater 10, the user needs to manipulate the gas water heater 10 by touching the panel housing 11. If the temperature of the panel housing 11 is too high, there is a greater risk of scalding.

Based on this, in one embodiment, as shown in fig. 1, the gas water heater 10 includes a panel housing 11, an insulated water tank 13, and the gas heating device. The panel shell 11 with the relative interval setting of gas heating device, thermal-insulated water tank 13 is located panel shell 11 with between the gas heating device. The heat insulation water tank 13 is shielded between the gas heating device and the panel shell 11, so that the gas heating device is prevented from transferring heat to the panel shell 11.

Therefore, when the gas water heater 10 is in use, the water in the heat insulation water tank 13 arranged between the panel shell 11 and the gas heating device can absorb the heat transferred by the gas heating device, so that the gas heating device is prevented from transferring the heat to the panel shell 11 to lower the temperature on the panel shell 11, and the scalding situation is avoided. And the water in the heat insulation water tank 13 can be used as domestic water for users to use after absorbing heat and being heated, thereby improving the heat utilization rate and achieving the effects of energy conservation and environmental protection.

Specifically, in one embodiment, the gas heating device comprises a burner and a heat exchanger, the heat exchanger is externally provided with a first heat exchange coil, the burner is communicated with the heat exchanger, so that high-temperature flue gas generated by combustion of the burner can enter the heat exchanger, and the heat insulation water tank 13 covers the side faces, facing the panel shell 11, of the burner and the heat exchanger. In other words, the insulating water tank 13 separates both the burner and the heat exchanger from the panel casing 11, avoiding excessive temperatures of the panel casing 11.

More specifically, in one embodiment, as shown in fig. 1 and 2, the heat insulation water tank 13 is a plate-shaped structure, and the two sides of the heat insulation water tank 13 with a larger area are a front plate 131 and a rear plate 132, and the front plate 131 and the rear plate 132 are respectively opposite to the panel housing 11 and the gas heating apparatus.

The plate-like structure of the insulated water tank 13 does not cause an excessive increase in the thickness of the gas water heater 10. Specifically, the thickness of the front plate 131 and the rear plate 132 of the insulated water tank 13 may be 0.2mm or 0.4 mm. Moreover, because the heat-insulating water tank 13 is a plate-shaped structure, water in the heat-insulating water tank 13 can be more uniformly distributed, and heat of each part on the gas heating device can be fully absorbed. Further, in order to enable the heat released by the gas heating device to be more effectively transferred to the heat insulation water tank 13, the material of the heat insulation water tank 13 may be copper.

When the gas heating apparatus includes the burner and the heat exchanger, the rear plate 132 of the heat-insulated water tank 13 is opposite to the burner and the heat exchanger.

Specifically, the front plate 131 may be in contact with the panel housing 11, and the rear plate 132 may be in contact with the burner and heat exchanger.

Further, in one embodiment, as shown in fig. 2, the heat insulation water tank 13 is provided with a water inlet and a water outlet. The water inlet is located the bottom terminal surface of heat insulating water tank 13, the delivery port is located the top terminal surface of heat insulating water tank 13, the delivery port with first heat exchange coil's water inlet intercommunication.

The water in the heat insulation water tank 13 is heated preliminarily after absorbing heat, and the water after preliminary heating is conveyed to the first heat exchange coil pipe, so that the initial temperature of the water in the first heat exchange coil pipe is increased, and therefore under the condition that the water outlet temperature required by the first heat exchange coil pipe is set, the required fuel is less, and the effects of energy conservation and environmental protection are achieved.

When the heat insulation water tank 13 is a plate-shaped structure, the water inlet is located on the end wall at the bottom end of the heat insulation water tank 13, and the water outlet is located on the end wall at the top end of the heat insulation water tank 13.

Further, in another embodiment, as shown in fig. 3 and 4, a residual heat absorption assembly 14 is provided, and the residual heat absorption assembly 14 can be communicated with the heat exchanger, so that the flue gas in the heat exchanger can enter the residual heat absorption assembly 14. The waste heat absorption assembly 14 comprises a heat exchange channel 1421 for flowing water, and the water in the heat exchange channel 1421 can absorb the heat of the flue gas in the waste heat absorption assembly 14. The water in the heat exchange channel 1421 can be used as domestic water for users after absorbing heat and increasing temperature.

Further, the water heated and warmed in the heat exchange channel 1421 may be further conveyed to the first heat exchange coil, that is, the water outlet of the heat exchange channel 1421 is communicated with the water inlet of the first heat exchange coil, so as to raise the initial temperature of the water in the first heat exchange coil.

Further, in an embodiment, the residual heat absorbing assembly 14 can be applied to the gas water heater 10 described in any one of the foregoing embodiments, and the water inlet of the heat exchanging channel 1421 is communicated with the water outlet of the heat insulating water tank 13. In other words, the water in the heat insulation water tank 13 is primarily heated and then conveyed to the heat exchange channel 1421, the heat exchange channel 1421 further absorbs the residual heat in the flue gas to raise the temperature, and the heated water is conveyed to the first heat exchange coil. Further raising the initial temperature of the water in the first heat exchange coil.

Further, in one embodiment, as shown in fig. 3 and 4, the residual heat absorbing assembly 14 includes a flue gas housing 141 and a second heat exchanging coil 142. The flue gas shell 141 encloses a flue gas heat exchange channel 1411, and the flue gas heat exchange channel 1411 can be communicated with a heat exchanger in the gas water heater 10. The flue gas in the heat exchanger of the gas water heater 10 enters the flue gas heat exchange channel 1411 from the inlet of the flue gas heat exchange channel 1411. The second heat exchange coil 142 is disposed in the flue gas heat exchange channel 1411, and a channel in the second heat exchange coil 142 is the heat exchange channel 1421. The flue gas entering the flue gas heat exchange channel 1411 exchanges heat with the water in the second heat exchange coil 142, and then heats the water in the second heat exchange coil 142.

Further, the water outlet of the second heat exchanging coil 142 may be communicated with the water inlet of the first heat exchanging coil outside the heat exchanger. Thereby delivering the water heated in the second heat exchange coil 142 to the first heat exchange coil and raising the initial temperature of the water in the first heat exchange coil.

Further, in one embodiment, as shown in FIG. 4, the flue gas housing 141 is provided with a mounting channel 1412, and the mounting channel 1412 extends from the top end to the bottom end of the flue gas housing 141. The second heat exchanging coil 142 includes a spiral coil 1422 and an auxiliary section 1423. The spiral coil 1422 is located in the flue gas heat exchange channel 1411. The spiral coil 1422 may be disposed along the axial direction of the flue gas heat exchange channel 1411, and the spiral coil 1422 abuts against the side wall of the flue gas heat exchange channel 1411. One end of the spiral coil 1422 near the top end of the flue gas housing 141 is communicated with the auxiliary pipe section 1423, and the other end of the spiral coil 1422 is a water inlet end 1424. The auxiliary pipe section 1423 is disposed along the installation channel 1412 and extends to the bottom end of the flue gas casing 141, and one end of the auxiliary pipe section 1423, which is located at the bottom end of the flue gas heat exchange channel 1411, is a water outlet end 1425.

The water inlet end 1424 may be in communication with a water outlet of the heat insulation water tank 13, and the water outlet end 1425 may be in communication with a water inlet of the first heat exchange coil. The water inlet end 1424 and the water outlet end 1425 are located at the same end of the flue gas housing 141, so that the installation convenience is improved.

And the spiral coil 1422 increases the path length of water flowing in the flue gas heat exchange channel 1411, thereby increasing the heat exchange area and improving the heat exchange efficiency.

Specifically, the diameter of the second heat exchanging coil 142 may be 5mm or 10 mm. The wall thickness of the second heat exchange coil 142 may be 0.2mm or 0.4 mm. And the second heat exchange coil 142 and the flue gas shell 141 can be made of copper materials.

Specifically, in one embodiment, the gas water heater 10 further includes a blower (not shown) for blowing out the flue gas in the heat exchanger, and the residual heat absorption assembly 14 is connected to an outlet of the blower and a flue pipe of the gas water heater 10. The flue gas discharged from the heat exchanger needs to be absorbed by the residual heat absorption assembly 14 before being discharged.

More specifically, the smoke housing 141 of the residual heat absorption assembly 14 is communicated between the outlet of the fan and the smoke pipe of the gas water heater 10. As shown in fig. 1, the flue gas housing 141 is located at the top of the casing 12 of the gas water heater 10, and the water inlet end 1424 and the water outlet end 1425 of the second heat exchange coil 142 are both located at one end of the flue gas housing 141 close to the fan, so that the second heat exchange coil 142 is more conveniently communicated with the heat insulation water tank 13 and the first heat exchange coil.

It should be noted that a burner, a heat exchanger, and a fan, which are not shown in the drawings, are disposed in a space enclosed by the housing 12 and the panel casing 11. Specifically, the burner, the heat exchanger and the fan are sequentially arranged from bottom to top. The heat insulation water tank 13 is located in a space enclosed by the case 12 and the panel casing 11. Specifically, a support may be provided in this space, with which the heat-insulating water tank 13 is supported between the panel casing 11 and the gas heating device; alternatively, the heat insulating water tank 13 is sandwiched between the panel casing 11 and the gas heating device.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship 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 at least one such 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 or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above 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 above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to 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 spirit of the present invention, several variations and modifications can be made, which are 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 waste heat absorption assembly is characterized by comprising a smoke shell and a second heat exchange coil, wherein the smoke shell is enclosed into a smoke heat exchange channel, the smoke heat exchange channel can be communicated with a heat exchanger in a gas water heater, and the second heat exchange coil is arranged in the smoke heat exchange channel.

2. The waste heat absorbing assembly according to claim 1, wherein a mounting channel is disposed on the flue gas housing, the mounting channel extends from the top end to the bottom end of the flue gas housing, the second heat exchanging coil includes a spiral coil and an auxiliary pipe section, the spiral coil is disposed in the flue gas heat exchanging channel, one end of the spiral coil, which is close to the top end of the flue gas housing, is communicated with the auxiliary pipe section, the other end of the spiral coil is a water inlet end, the auxiliary pipe section is disposed along the mounting channel and extends to the bottom end of the flue gas housing, and one end of the auxiliary pipe section, which is located at the bottom end of the flue gas heat exchanging channel, is a water outlet end.

3. The waste heat absorbing assembly as claimed in claim 2, wherein the spiral coil is disposed along an axial direction of the flue gas heat exchange channel, and the spiral coil is abutted against a side wall of the flue gas heat exchange channel.

4. A waste heat absorbing assembly as claimed in any one of claims 1 to 3, wherein the tube diameter of the second heat exchange tube is 5mm or 10 mm.

5. The waste heat absorbing assembly as claimed in any one of claims 1 to 3, wherein the second heat exchange coil has a wall thickness of 0.2mm or 0.4 mm.

6. The waste heat absorbing assembly as in any one of claims 1-3, wherein the second heat exchanging coil is made of copper material and the flue gas housing is made of copper material.

7. A gas water heater is characterized by comprising a burner, a heat exchanger and the waste heat absorption assembly as claimed in any one of claims 1 to 6, wherein a first heat exchange coil is arranged outside the heat exchanger, the burner is communicated with the heat exchanger, so that high-temperature flue gas formed by combustion of the burner can enter the heat exchanger, a flue gas heat exchange channel is communicated with the heat exchanger, and a water outlet of a second heat exchange coil is communicated with a water inlet of the first heat exchange coil.

8. The gas water heater of claim 7, further comprising a blower for blowing out flue gas from the heat exchanger, the flue gas housing communicating an outlet of the blower with a flue pipe of the gas water heater.

9. The gas water heater of claim 8, further comprising a heat insulation water tank and a panel housing, wherein the burner and the heat exchanger are spaced from the panel housing, the heat insulation water tank covers the side of the burner and the heat exchanger facing the panel housing, the heat insulation water tank is provided with a water outlet, and the water inlet of the second heat exchange coil is communicated with the water outlet of the heat insulation water tank.

10. The gas water heater of claim 9, wherein the insulated tank is a plate-like structure, the two sides of the insulated tank having a larger area are a front plate and a rear plate, the front plate is opposite to the panel housing, the rear plate is opposite to the burner and the heat exchanger, and the outlet of the insulated tank is located at the top end face of the insulated tank.

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