CN116294192A - Heat exchanger of gas water heater and gas water heater with same - Google Patents
Heat exchanger of gas water heater and gas water heater with same Download PDFInfo
- Publication number
- CN116294192A CN116294192A CN202111584773.5A CN202111584773A CN116294192A CN 116294192 A CN116294192 A CN 116294192A CN 202111584773 A CN202111584773 A CN 202111584773A CN 116294192 A CN116294192 A CN 116294192A
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- Prior art keywords
- heat exchange
- main heat
- exchange tube
- water heater
- heat exchanger
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 161
- 239000000779 smoke Substances 0.000 claims abstract description 13
- 239000007789 gas Substances 0.000 claims description 50
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 19
- 239000003546 flue gas Substances 0.000 claims description 19
- 230000007423 decrease Effects 0.000 claims description 2
- 238000009834 vaporization Methods 0.000 abstract description 24
- 230000008016 vaporization Effects 0.000 abstract description 24
- 238000013021 overheating Methods 0.000 abstract description 5
- 238000005452 bending Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
- F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a heat exchanger of a gas water heater and the gas water heater with the heat exchanger, wherein the heat exchanger of the gas water heater comprises: the device comprises a box body, a water inlet pipe, a water outlet pipe and a plurality of main heat exchange pipes, wherein a smoke air cavity is defined in the box body; the water inlet pipe and the water outlet pipe are arranged on the outer side of the box body; the main heat exchange pipes are arranged in the smoke cavity and are sequentially connected in series between the water inlet pipe and the water outlet pipe along the water flow direction, wherein the main heat exchange pipes which are sequentially connected in the water flow direction are sequentially arranged in the smoke cavity along the smoke flow direction. According to the heat exchanger of the gas water heater, the main heat exchange pipes at different positions through which water flows sequentially are reasonably arranged, so that the local high temperature of the main heat exchange pipes is reduced, the local overheating is further reduced, the vaporization degree of the main heat exchange pipes is slowed down, the vaporization noise is reduced, and the use experience of users is improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a heat exchanger of a gas water heater and the gas water heater with the heat exchanger.
Background
In the related art, it is pointed out that the gas water heater can make higher load than the electric heating water storage type water heater, namely, hot water is discharged and the water quantity is large, and the gas water heater has become one of main hot water supply appliances in the market. However, due to higher load and higher heat flux density, the heat exchanger is easy to generate cold boiling phenomenon in the process, vaporization noise similar to that of a kettle is generated, the use experience of a user is affected by a lighter person, dry heating is caused by plug flow generated by a severe person, and finally cracks and water leakage of a pipe are caused. Supercooling boiling refers to the phenomenon that the temperature of the liquid body is lower than the saturation temperature under the corresponding pressure, the temperature of the wall surface is higher than the saturation temperature, when the temperature difference between the liquid body and the wall surface reaches a certain value, bubbles are generated on the inner wall of the tube, vaporization occurs, and condensation disappears when the bubbles are contacted with underheated water. The water flow disturbance is caused by the movement factors such as bubble generation, growth, detachment, collapse and the like, so that the heat exchanger vibrates and generates noise. When vaporization is serious, a large section of bubbles are generated in the pipe, liquid phase water is blocked by the bubbles to form plug flow, so that dry burning is formed at the bubble position, and the liquid phase water is cracked and fails after a long time.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention aims to provide a heat exchanger of a gas water heater, which is characterized in that the heat exchanger of the gas water heater is provided with main heat exchange pipes at different positions through which water flows sequentially, so that the local high temperature of the main heat exchange pipes is reduced, the local overheating is further reduced, the vaporization degree of the main heat exchange pipes is slowed down, the vaporization noise is reduced, and the use experience of users is improved.
The invention also provides a gas water heater with the heat exchanger.
The heat exchanger of the gas water heater according to the first aspect of the present invention comprises: the box body is internally provided with a smoke cavity; the water inlet pipe and the water outlet pipe are arranged at the outer side of the box body; the main heat exchange pipes are arranged in the smoke cavity, and are sequentially connected between the water inlet pipe and the water outlet pipe in series along the water flow direction, wherein the main heat exchange pipes which are sequentially connected in the water flow direction are sequentially arranged in the smoke cavity along the smoke flow direction.
According to the heat exchanger of the gas water heater, the main heat exchange pipes at different positions through which water flows sequentially are reasonably arranged, so that the local high temperature of the main heat exchange pipes is reduced, the local overheating is further reduced, the vaporization degree of the main heat exchange pipes is slowed down, the vaporization noise is reduced, and the use experience of users is improved.
In some embodiments, the tank is disposed on the upper side of the burner of the gas water heater, and the upper and lower ends of the tank are both open, and the plurality of main heat exchange tubes include a first main heat exchange tube and a second main heat exchange tube, one end of the first main heat exchange tube is connected with the water inlet pipe, and the other end of the first main heat exchange tube is connected with the inlet end of the second main heat exchange tube, and the outlet end of the second main heat exchange tube is connected to the water outlet pipe, where the first main heat exchange tube is disposed on the lower side of the second main heat exchange tube.
In some embodiments, the first main heat exchange tube comprises a plurality of first heat exchange tube sections which are parallel in the horizontal direction and are arranged at intervals, and the plurality of first heat exchange tube sections are sequentially connected along the flow direction of water flow.
In some embodiments, the plurality of first heat exchange tube sections along the water flow direction are arranged in sequence along the direction of gradually decreasing temperature in the fume chamber.
In some embodiments, the plurality of first heat exchange tube sections extend along the length direction of the tank and are arranged at intervals in the width direction of the tank.
In some embodiments, the second main heat exchange tube comprises a plurality of second heat exchange tube sections which are parallel in the horizontal direction and are arranged at intervals, and the plurality of second heat exchange tube sections are sequentially connected along the water flow direction.
In some embodiments, a plurality of the second heat exchange tube sections are provided with fins.
In some embodiments, further comprising: the coil pipe, one end of coil pipe with a plurality of the water flow direction in the main heat exchange tube is most downstream main heat exchange tube links to each other, and the other end is connected the outlet pipe, the coil pipe is located the outside of box and encircle the box spiral extends.
In some embodiments, the primary heat exchange tube is circular or oval in cross-section.
The gas water heater according to the second aspect of the invention comprises a heat exchanger of the gas water heater according to the first aspect of the invention.
According to the gas water heater, the heat exchanger of the gas water heater is arranged, so that the overall performance of the gas water heater is improved.
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 schematic view of a heat exchanger of a gas water heater according to an embodiment of the present invention;
FIG. 2 is a schematic view of the primary heat exchange tubes and fins inside the tank shown in FIG. 1;
FIG. 3 is a schematic view of the primary heat exchange tube shown in FIG. 2;
fig. 4 is a schematic view of the fin shown in fig. 2.
Reference numerals:
100. a heat exchanger;
110. the box body comprises:
120. a water inlet pipe;
130. a water outlet pipe;
140. a main heat exchange tube;
141. a first main heat exchange tube; 1411. a first heat exchange tube section;
142. a second main heat exchange tube; 1421. a second heat exchange tube section; 1422. a fin;
143. a first bend section;
144. a second folded tube section;
150. a coiled pipe.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A heat exchanger 100 of a gas water heater according to an embodiment of the first aspect of the present invention is described below with reference to fig. 1 and 4.
As shown in fig. 1, a heat exchanger 100 of a gas water heater according to an embodiment of the first aspect of the present invention includes: a tank 110, a water inlet pipe 120, a water outlet pipe 130, and a plurality of main heat exchange pipes 140.
Specifically, the housing 110 defines a smoke chamber therein; the water outlet pipe 130 and the water inlet pipe 120 are arranged on the outer side of the box body 110; the plurality of main heat exchange tubes 140 are arranged in the flue gas cavity, and the plurality of main heat exchange tubes 140 are sequentially connected in series between the water inlet pipe 120 and the water outlet pipe 130 along the water flow direction, wherein the plurality of main heat exchange tubes 140 sequentially connected in the water flow direction are sequentially arranged along the flue gas flow direction in the flue gas cavity, and it is noted that, because flue gas is generated by combustion of fuel gas, the flue gas flow direction can be understood as the direction from high temperature to low temperature, so that water with lower temperature passes through the main heat exchange tube 140 with higher temperature first, the temperature of the main heat exchange tube 140 is reduced, the water flow with highest temperature is prevented from flowing through the main heat exchange tube 140 with highest temperature, and the vaporization degree of the main heat exchange tube 140 is slowed down.
For example, as shown in fig. 1, the flow direction of the flue gas in the flue gas cavity is from bottom to top (for example, from bottom to top as shown in fig. 1), the water flows from the water inlet pipe 120 into the heat exchanger 100, and flows through the main heat exchange pipes 140 at the lowest part first, and flows through the rest main heat exchange pipes 140 from bottom to top in sequence, so that the water flows through the main heat exchange pipe 140 with the highest temperature under the condition that the temperature of the water flow is the lowest, and the situation that the water with the highest temperature flows through the main heat exchange pipe 140 with the highest temperature is avoided, so that the temperature of the main heat exchange pipe 140 is reduced better, and the vaporization degree of the main heat exchange pipe 140 is slowed down.
According to the heat exchanger 100 of the gas water heater, the main heat exchange pipes 140 at different positions through which water flows sequentially are reasonably arranged, so that the local high temperature of the main heat exchange pipes 140 is reduced, the local overheating is further reduced, the vaporization degree of the main heat exchange pipes 140 is slowed down, the vaporization noise is reduced, and the use experience of a user is improved.
In one embodiment of the present invention, as shown in fig. 1, the tank 110 is disposed on the upper side of the burner of the gas water heater, and the upper and lower ends of the tank 110 (for example, the upper and lower ends of the tank 110 shown in fig. 1) are both open, the burner is used for providing a place for the combustion of the gas, and the flue gas generated by the combustion of the gas in the burner is diffused into the tank 110 for heat exchange with the water in the main heat exchange tube 140, so as to realize the heating of the water flow by the gas water heater, and meet the use requirements of users.
As shown in fig. 1, the plurality of main heat exchange tubes 140 are disposed at the upper portion of the box 110, the plurality of main heat exchange tubes 140 may include a first main heat exchange tube 141 and a second main heat exchange tube 142, one end of the first main heat exchange tube 141 is connected with the water inlet tube 120 and the other end is connected with the inlet end of the second main heat exchange tube 142, and the outlet end of the second main heat exchange tube 142 is connected to the water outlet tube 130, wherein the first main heat exchange tube 141 is disposed at the lower side of the second main heat exchange tube 142, such that the first main heat exchange tube 141 is upstream in the flue gas flow direction, and the second main heat exchange tube 142 is downstream in the flue gas flow direction, that is, the temperature of the first main heat exchange tube 141 is greater than the temperature of the second main heat exchange tube, and the water inlet tube 120 is connected with the first main heat exchange tube 141, so that the water with the lowest temperature flows through the first main heat exchange tube 141, thereby reducing the temperature of the first main heat exchange tube 141, further reducing the degree of vaporization of the first main heat exchange tube 141, reducing vaporization noise, and improving the user experience.
For example, as shown in fig. 2, the water flows from the water inlet pipe 120 into the heat exchanger 100, first passes through the first main heat exchange pipe 141 located at the lower part of the second main heat exchange pipe 142, the temperature of the first main heat exchange pipe 141 is higher, then passes through the second main heat exchange pipe 142, and finally flows out of the heat exchanger 100 through the water outlet pipe 130, so that the water flows through the main heat exchange pipe 140 with the highest temperature under the condition that the water flow temperature is the lowest, the water with the highest temperature is prevented from flowing through the main heat exchange pipe 140 with the highest temperature, and the temperature of the main heat exchange pipe 140 is reduced better, and the vaporization degree of the main heat exchange pipe 140 is slowed down.
In one embodiment of the present invention, as shown in fig. 2, the first main heat exchange tube 141 may include a plurality of first heat exchange tube sections 1411 parallel in a horizontal direction and spaced apart in the horizontal direction, and the plurality of first heat exchange tube sections 1411 are sequentially connected in a water flow direction, so that a heat exchange area of water flowing through the first main heat exchange tube 141 may be increased, and a heating effect of the heat exchanger 100 on the water flow may be ensured.
For example, as shown in fig. 3, the first main heat exchange tube 141 is parallel in the horizontal direction, and three first heat exchange tube sections 1411 are arranged at intervals in the horizontal direction, so that the heat exchange area of the first main heat exchange tube 141 can be increased, the heating of the gas water heater to water flow is ensured, and the use requirement of a user is met.
In one embodiment of the present invention, as shown in fig. 3, a plurality of first heat exchange tube sections 1411 along the flow direction of the water flow are sequentially arranged in the flue gas cavity along the direction of gradually decreasing the temperature, so that the water with the lowest temperature can be ensured to flow through the first heat exchange tube section 1411 with the highest temperature, the temperature of the main heat exchange tube 140 is better reduced, the vaporization degree of the main heat exchange tube 140 is slowed down, the noise in the working process of the heat exchanger 100 is reduced, and the use experience of a user is improved.
For example, as shown in fig. 3, the first main heat exchange tube 141 may include three first heat exchange tube sections 1411 parallel in a horizontal direction and arranged at intervals in the horizontal direction, and in a specific temperature field of the case 110, the temperature gradually decreases from the back to the front (for example, from the back to the front in fig. 1), the water flowing into the heat exchanger 100 through the water inlet tube 120 flows through the first heat exchange tube section 1411 located at the rearmost end, the first heat exchange tube section 1411 located at the middle position, the first heat exchange tube section 1411 located at the foremost end, and the second main heat exchange tube 142, and flows out of the heat exchanger 100 through the water outlet tube 130, so that the water with the lowest temperature flows through the first heat exchange tube section 1411 with the highest temperature, thereby better reducing the temperature of the main heat exchange tube 140 and slowing down the vaporization degree of the main heat exchange tube 140.
In one embodiment of the present invention, as shown in fig. 1, a plurality of first heat exchange tube sections 1411 extend along a length direction (e.g., a left-right direction shown in fig. 1) of the case 110 and are arranged at intervals in a width direction (e.g., a front-rear direction shown in fig. 1) of the case 110, so that a certain heat exchange area is ensured, and meanwhile, a blocking effect of a pipeline on water flow can be reduced to the greatest extent, a timely supply of water flow is ensured, and a use requirement of a user is met.
Further, the plurality of first heat exchange tube sections 1411 are connected through the first bending tube section 143, the first bending tube section 143 is located at the outer side of the case 110, and the first bending tube section 143 can be formed into a U-shape, so that the plurality of first heat exchange tube sections 1411 are connected without changing the heat exchange area of the plurality of first heat exchange tube sections 1411, and circulation of water flow is achieved.
As shown in fig. 4, the first heat exchange tube section 1411 is not provided with fins 1422, it should be noted that the fins 1422 are formed into a sheet shape, and the fins 1422 are sequentially and uniformly arranged at intervals in the length direction of the first heat exchange tube section 1411, and the fins 1422 are used for increasing the heat exchange area of the main heat exchange tube 140, so that the main heat exchange tube 140 has a better heat exchange effect, however, the flue gas concentration of the first heat exchange tube section 1411 is highest, the temperature is highest, the heat flux is higher, and the fins 1422 are not provided to reduce the temperature of the main heat exchange tube 140 and reduce the vaporization risk.
In one embodiment of the present invention, as shown in fig. 2, the second main heat exchange tube 142 may include a plurality of second heat exchange tube sections 1421 arranged in parallel and spaced apart in a horizontal direction, the plurality of second heat exchange tube sections 1421 are sequentially connected in a water flow direction, further, the plurality of second heat exchange tube sections 1421 are connected through a second bending tube section 144, the second bending tube section 144 is located at an outer side of the case 110, and the second bending tube section 144 is formed in a U-shape, so that the plurality of second heat exchange tube sections 1421 are connected to achieve a water flow without changing a heat exchange area of the plurality of second heat exchange tube sections 1421.
In one embodiment of the present invention, as shown in fig. 2, the fins 1422 are disposed on the plurality of second heat exchange tube sections 1421, so that the heat exchange area of the second heat exchange tube sections 1421 can be increased, the heat flux density of the second heat exchange tube sections 1421 is increased, the heating effect of the heat exchanger 100 on the water flow is ensured, and the use requirement of the user is met.
For example, as shown in fig. 2, the first main heat exchange tube 141 is not provided with the fins 1422, and the second main heat exchange tube 142 is provided with the fins 1422, so that the temperature of the first main heat exchange tube 141 is reduced, the vaporization degree of the first main heat exchange tube 141 is slowed down, and meanwhile, the heat exchange area of the second main heat exchange tube 142 is increased, and the heating effect of the heat exchanger 100 on water flow is further ensured.
It should be noted that, in the prior art, the fins 1422 are disposed on the first main heat exchange tube 141 and the second main heat exchange tube 142, so that the heating effect of the water flowing through the first main heat exchange tube 141 and the second main heat exchange tube 142 is guaranteed, and meanwhile, the vaporization degree in the first main heat exchange tube 141 is accelerated, so that the noise of the gas water heater in the use process is relatively high, and the use requirement of a user cannot be met.
In one embodiment of the present invention, as shown in fig. 1, the heat exchanger 100 of the gas water heater may further include a coil 150, one end of the coil 150 is connected to the main heat exchange tube 140 most downstream in the water flow direction among the plurality of main heat exchange tubes 140, the other end is connected to the water outlet tube 130, the coil 150 is located at the outer side of the tank 110 and spirally extends around the tank 110, further, in the water flow direction, the coil 150 gradually and spirally extends downwards around the tank 110, the flue gas generated by the combustion of the gas is at a higher temperature inside the tank 110, and the external temperature of the tank 110 is still high, so that the water flow in the coil 150 can be further heated.
In an embodiment of the present invention, referring to fig. 1, the cross section of the main heat exchange tube 140 is circular or elliptical, so that the heat exchange area of the main heat exchange tube 140 can be increased to a greater extent, and the heat utilization efficiency is improved.
For example, as shown in fig. 3, the cross section of the main heat exchange tube 140 is formed in a circular shape, so that the heat exchange area of the main heat exchange tube 140 can be increased to a large extent during the heating process in the interior of the case 110, thereby improving the heat utilization efficiency.
The gas water heater according to the embodiment of the second aspect of the present invention includes the heat exchanger 100 of the gas water heater according to the embodiment of the first aspect of the present invention described above.
Other components such as power supplies and displays, and operation of gas water heaters according to embodiments of the present invention are known to those of ordinary skill in the art and will not be described in detail herein.
According to the gas water heater provided by the embodiment of the invention, the heat exchanger 100 of the gas water heater provided by the embodiment of the first aspect is arranged, so that the overall performance of the gas water heater is improved.
A heat exchanger 100 of a gas water heater according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
Referring to fig. 1, a heat exchanger 100 of a gas water heater according to an embodiment of the present invention may include: a tank 110, a water inlet pipe 120, a water outlet pipe 130, a plurality of main heat exchange tubes 140 and a coil 150.
The box 110 defines a flue gas chamber therein, a burner is disposed below the flue gas chamber, and fuel gas is combusted in the burner to generate high-temperature flue gas, which is diffused into the flue gas chamber.
The water outlet pipe 130 and the water inlet pipe 120 are both arranged on the outer side of the box body 110.
The main heat exchange pipe 140 is disposed at an upper portion of the flue gas chamber, and a cross section of the main heat exchange pipe 140 is formed in a circular shape.
The main heat exchange tube 140 includes a first main heat exchange tube 141 and a second main heat exchange tube 142, the first main heat exchange tube 141 includes three first heat exchange tube sections 1411 parallel in a horizontal direction and arranged at intervals in the horizontal direction, the three first heat exchange tube sections 1411 are sequentially connected along a water flow direction through the first bending tube sections 143, fins 1422 are not provided on the first heat exchange tube sections 1411, the right end of the first heat exchange tube section 1411 at the rearmost end is connected with the water inlet tube 120, and the first heat exchange tube section 1411 at the foremost end is connected with the second main heat exchange tube 142.
The second main heat exchange tube 142 includes two second heat exchange tube sections 1421 parallel in the horizontal direction and arranged at intervals in the horizontal direction, the two second heat exchange tube sections 1421 are sequentially connected along the water flow direction through the second bending tube section 144, fins 1422 are arranged on the second heat exchange tube sections 1421, one end of the second main heat exchange tube 142 is connected with the first main heat exchange tube, the other end is connected with the coil 150, the other end of the coil 150 is connected with the water outlet tube 130, and the coil 150 is located on the outer side of the box 110 and extends spirally around the box 110.
Specifically, as shown in fig. 1, water flows from the water inlet pipe 120 into the heat exchanger 100, passes through the first heat exchange tube section 1411 at the rearmost end, passes through the first heat exchange tube section 1411 at the middle position, passes through the first heat exchange tube section 1411 at the foremost end, then reaches the second main heat exchange tube 142, passes through the second main heat exchange tube 142 to reach the coil 150, passes through the coil 150 to reach the water outlet pipe 130, and completes the heat exchange process, thereby slowing down the degree of conversion of the main heat exchange tube 140 and reducing vaporization noise.
According to the heat exchanger 100 of the gas water heater, the main heat exchange pipes 140 at different positions through which water flows sequentially are reasonably arranged, so that the local high temperature of the main heat exchange pipes 140 is reduced, the local overheating is further reduced, the vaporization degree of the main heat exchange pipes 140 is slowed down, the vaporization noise is reduced, and the use experience of a user is improved.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplification of the description.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, the terms "mounted," "connected," "secured," and the like are to be construed broadly, unless otherwise specifically indicated and defined. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A heat exchanger for a gas water heater, comprising:
the box body is internally provided with a smoke cavity;
the water inlet pipe and the water outlet pipe are arranged at the outer side of the box body;
the main heat exchange pipes are arranged in the smoke cavity, and are sequentially connected between the water inlet pipe and the water outlet pipe in series along the water flow direction, wherein the main heat exchange pipes which are sequentially connected in the water flow direction are sequentially arranged in the smoke cavity along the smoke flow direction.
2. The heat exchanger of a gas water heater according to claim 1, wherein the tank is provided at an upper side of a burner of the gas water heater and has both upper and lower ends opened, the plurality of main heat exchange pipes include a first main heat exchange pipe and a second main heat exchange pipe, one end of the first main heat exchange pipe is connected to a water inlet pipe and the other end is connected to an inlet end of the second main heat exchange pipe, and an outlet end of the second main heat exchange pipe is connected to the water outlet pipe, wherein the first main heat exchange pipe is located at a lower side of the second main heat exchange pipe.
3. The heat exchanger of a gas water heater as recited in claim 2, wherein the first main heat exchange tube includes a plurality of first heat exchange tube sections arranged in parallel and at intervals in a horizontal direction, the plurality of first heat exchange tube sections being connected in sequence in a water flow direction.
4. A heat exchanger for a gas water heater according to claim 3, wherein a plurality of the first heat exchange tube sections in the direction of flow of water flow are arranged in the flue gas chamber in order in the direction of gradual decrease in temperature.
5. A gas water heater heat exchanger according to claim 3, wherein a plurality of the first heat exchange tube sections extend in a longitudinal direction of the tank and are arranged at intervals in a width direction of the tank.
6. A heat exchanger for a gas water heater as claimed in any one of claims 2 to 5, wherein the second main heat exchange tube includes a plurality of second heat exchange tube sections arranged in parallel and at intervals in a horizontal direction, the plurality of second heat exchange tube sections being connected in series in a water flow direction.
7. The heat exchanger of a gas water heater as recited in claim 6, wherein a plurality of said second heat exchange tube sections are provided with fins.
8. The heat exchanger of a gas water heater as recited in claim 1, further comprising: the coil pipe, one end of coil pipe with a plurality of the water flow direction in the main heat exchange tube is most downstream main heat exchange tube links to each other, and the other end is connected the outlet pipe, the coil pipe is located the outside of box and encircle the box spiral extends.
9. The heat exchanger of a gas water heater as recited in claim 1, wherein the main heat exchange tube has a circular or oval cross section.
10. A gas water heater comprising a heat exchanger of a gas water heater according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111584773.5A CN116294192A (en) | 2021-12-21 | 2021-12-21 | Heat exchanger of gas water heater and gas water heater with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111584773.5A CN116294192A (en) | 2021-12-21 | 2021-12-21 | Heat exchanger of gas water heater and gas water heater with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116294192A true CN116294192A (en) | 2023-06-23 |
Family
ID=86836356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111584773.5A Pending CN116294192A (en) | 2021-12-21 | 2021-12-21 | Heat exchanger of gas water heater and gas water heater with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116294192A (en) |
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2021
- 2021-12-21 CN CN202111584773.5A patent/CN116294192A/en active Pending
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