Double water path heat exchanger with high efficiency

Abstract

The utility model discloses a double waterway heat exchanger of high -efficient heat exchange, and the double waterway heat exchanger of the product is provided with front opening, heat flow circulation exchange channel, smoke outlet, the rear wall inside of double waterway heat exchanger body has directly set up the first heat exchange water channel of nakedness circuitous bending, second heat exchange water channel, first heat exchange water channel, second heat exchange water channel all are located in the rear wall of heat flow circulation exchange channel, the side wall of double waterway heat exchanger is provided with corresponding first water inlet hole, first water outlet hole, second water inlet hole, second water outlet hole, and first water inlet hole, first heat exchange water channel, first water outlet hole are integrally communicated, and second water inlet hole, second heat exchange water channel, second water outlet hole are integrally communicated, and two heat exchange water channels each independent flow circulation water, and the water of two heat exchange water channels directly absorbs the heat exchange of heat exchanger body and exchanges heat. The water of the product flowing through the heat exchange water channel of nakedness circuitous bending absorbs heat quickly, and the heat is transferred quickly, and the heat exchange efficiency is high, and the heat exchange efficiency is improved by 30% or above, and the gas combustion is saved.

Description

Technical Field

[0001] This utility model relates to a water heat exchange device for a gas water heater, and more particularly to a dual-water-path heat exchanger with high efficiency. Background Technology

[0002] 1. Chinese Patent Document Publication No.: CN215724134U discloses a combustion heat exchanger for improving heat utilization. The combustion heat exchanger has a burner inlet at the top, a combustion chamber in the upper part, and combustion heat exchange channels in the middle and lower parts. A meandering water inlet pipe is wrapped and fixed in the back of the base. One end of the water inlet pipe is a water inlet connector and the other end is a water outlet connector. The main feature of this product is that a meandering water inlet pipe is wrapped and fixed in the cover. One end of the water inlet pipe is a water inlet connector and the other end is a water outlet connector, making it an independent domestic water supply pipe.

[0003] The aforementioned combustion heat exchangers are similar products. They have a meandering water inlet pipe 1 wrapped and fixed inside the back of the combustion heat exchanger, and a meandering water inlet pipe 2 wrapped and fixed inside the front cover. Both of them use the method of wrapping the water inlet pipe inside the combustion heat exchanger. With the water inlet pipe separating them, their heat exchange efficiency is lower and the heat transfer is not as fast.

[0004] 2. Chinese Patent Publication No. CN210165788U discloses an energy-saving and environmentally friendly gas combustion heat exchanger. The gas combustion heat exchanger is made of aluminum. It has an air inlet at the top and a flue gas outlet at the bottom. A combustion distributor is fixed inside the air inlet. The gas combustion heat exchanger has a combustion chamber at the top, and combustion heat exchange channels in the middle and lower parts. Several heat exchange plates are fixed on the combustion heat exchange channels. At least one meandering copper water pipe is wrapped around the back of the gas combustion heat exchanger. The two ends of the copper water pipe protrude outwards. When the gas combustion heat exchanger is heating, it transfers heat to the copper water pipe through the body and heat exchange plates, and the water flowing through the copper water pipe is heated.

[0005] The gas combustion heat exchangers disclosed above are similar products. They have at least one meandering copper water pipe wrapped around the back of the gas combustion heat exchanger. Although the copper water pipe has good heat transfer, it is always separated by a water pipe, so its heat exchange efficiency is lower and the heat transfer is not as fast. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a high-efficiency dual-water-path heat exchanger with a reasonable structural design and two naked, meandering heat exchange channels directly opened on the rear wall of the dual-water-path heat exchanger body, thereby improving heat exchange efficiency.

[0007] The solution to the above technical problem is as follows:

[0008] A high-efficiency dual-water-path heat exchanger, belonging to the heat exchange components of gas water heaters, includes a metal dual-water-path heat exchanger with a front opening, a heat exchange channel, and a flue outlet. The rear wall of the heat exchanger body has two exposed, tortuous, first and second heat exchange channels directly formed inside the rear wall of the heat exchange channel. The side wall of the heat exchanger has corresponding first, first, second, and second water inlets and outlets. The first, first, and first water inlets and outlets are integrally connected, as are the second, second, and second water inlets and outlets. Water flows independently through each of the two heat exchange channels, directly absorbing heat from the heat exchanger body.

[0009] The dual-water-path heat exchanger includes a heat exchange component and a water channel cover. The heat exchange component is provided with a front opening, a heat flow and exchange channel, and a flue gas outlet. The side wall of the heat exchange component is provided with a first water inlet, a first water outlet, a second water inlet, and a second water outlet. The rear wall of the heat exchange component is directly provided with a bare, tortuous first heat exchange water tank and a second heat exchange water tank. The water channel cover is sealed and fixed to the rear wall of the heat exchange component and covers the openings of the first heat exchange water tank and the second heat exchange water tank to form the first heat exchange water channel and the second heat exchange water channel.

[0010] The first heat exchange channel and the second heat exchange channel are arranged in parallel horizontally or in parallel vertically.

[0011] The first heat exchange water channel and the second heat exchange water channel are arranged in a parallel, meandering manner.

[0012] The advantages of this high-efficiency dual-water-path heat exchanger are as follows: The product features two exposed, meandering heat exchange channels directly formed inside the rear wall of the heat exchanger body. These two independently flowing water channels do not interfere with each other. If one channel is dry or stops flowing, it does not affect the heating of water in the other channel, facilitating water heating and hot water extraction for users. This product can heat water flowing simultaneously in both channels, or heat water in one of the channels currently in circulation. Water flowing through the exposed, meandering heat exchange channels absorbs and transfers heat quickly, resulting in high heat exchange efficiency (increasing efficiency by over 30%) and saving on fuel consumption. Attached Figure Description

[0013] Figures 1-3 This is a perspective view of the product of this utility model;

[0014] Figure 4 This is a front view of the product of this utility model;

[0015] Figure 5This is a top view of the product of this utility model;

[0016] Figure 6 This is a bottom view of the product of this utility model;

[0017] Figure 7 This is a left view of the product of this utility model;

[0018] Figure 8 This is a rear view of the product of this utility model;

[0019] Figure 9 This is a right view of the product of this utility model;

[0020] Figures 10-13 This is an exploded view of the product of this utility model;

[0021] Figure 14 This is a cross-sectional view of the product of this utility model;

[0022] Figure 15 This is a back view of the aluminum heat exchange component of this utility model product;

[0023] Figure 16 This is a front view of the aluminum heat exchange component of this utility model product.

[0024] Dual-channel heat exchanger 1, front opening 11, heat flow and exchange channel 12, flue gas outlet 13, first heat exchange water channel 2, second heat exchange water channel 3, first water inlet 21, first water outlet 22, second water inlet 31, second water outlet 32, first heat exchange water tank 2A, second heat exchange water tank 3A, front cover metal component 101, metal heat exchange aluminum component 102, water channel cover plate 103, heat absorption fins 4, heat flow gap 5. Detailed Implementation

[0025] like Figures 1 to 16As shown: A high-efficiency dual-water-circuit heat exchanger, belonging to the heat exchange components of gas water heaters, includes a metal dual-water-circuit heat exchanger 1. The dual-water-circuit heat exchanger 1 is provided with a front opening 11, a heat flow exchange channel 12, and a flue outlet 13. The front opening 11 is used to install the gas burner, and the flue outlet 13 is used for exhausting smoke after combustion. The dual-water-circuit heat exchanger 1 is a reverse-fired type, which has higher heat utilization. The main technical improvement of this product is that the rear wall of the dual-water-circuit heat exchanger 1 body directly has a bare, tortuous first heat exchange channel 2 and a second heat exchange channel 3. The first heat exchange channel 2 and the second heat exchange channel 3 are both located at the heat flow exchange... The rear wall of the heat exchange channel 12; the wall thickness between the heat exchange channel 12 and the heat exchange water channel is 1 mm to 2.5 mm, generally 1.5 mm to 2.5 mm; the side wall of the dual-water-path heat exchanger 1 is provided with corresponding first water inlet 21, first water outlet 22, second water inlet 31, and second water outlet 32. The first water inlet 21, first heat exchange water channel 2, and first water outlet 22 are integrally connected, and the second water inlet 31, second heat exchange water channel 3, and second water outlet 32 ​​are integrally connected; the two heat exchange water channels flow independently, and the water flowing through the two heat exchange water channels directly absorbs heat from the heat exchanger body. The two independently flowing heat exchange water channels do not interfere with each other. If one channel is dry or the water stops flowing, it will not affect the heating of the water flowing in the other channel. This product can heat the water flowing in both heat exchange water channels simultaneously, or it can heat the water flowing in one of the channels. In use, the flame from the gas burner enters the heat exchange channel 12 and heats the body of the dual-water heat exchanger 1. The body of the dual-water heat exchanger 1 absorbs heat, and the water flowing through the first heat exchange channel 2 and the second heat exchange channel 3 directly absorbs heat from the heat exchanger body. The meandering first heat exchange channel 2 and the second heat exchange channel 3 form long water channels within the limited volume of the dual-water heat exchanger 1 body, increasing the water flow path. Heating occurs through the longer water flow path, and the meandering heat exchange channels turbulent the water flow through bends, improving the uniformity of water temperature and heat exchange effect. The length of the heat exchange channels ranges from 1.5 meters to 2.5 meters, designed according to power, volume, or channel size. The water flowing through the exposed, meandering heat exchange channels absorbs heat quickly, resulting in high heat exchange efficiency, increasing heat exchange efficiency by more than 30%, and saving gas combustion. This dual-water heat exchanger 1 is square in shape.

[0026] Preferably, the dual-water-path heat exchanger 1 includes a heat exchange component and a water channel cover 103, which is made of aluminum and integrally die-cast. The heat exchange component is provided with a front opening 11, a heat flow and exchange channel 12, and a flue outlet 13. The side wall of the heat exchange component is provided with a first water inlet 21, a first water outlet 22, a second water inlet 31, and a second water outlet 32. The rear wall of the heat exchange component is directly provided with a bare, tortuous first water exchange tank 2A ​​and a second water exchange tank 3A. The water channel cover 103 is sealed and fixed to the rear wall of the heat exchange component, and the first water exchange tank 2A ​​and the second water exchange tank 3A are connected in a sealed manner. The opening of tank 3A is closed to form the first heat exchange water channel 2 and the second heat exchange water channel 3. This further refines the structure of the dual-channel heat exchanger 1, making the first heat exchange water tank 2A ​​and the second heat exchange water tank 3A easier to design and manufacture. A horizontal inner ring step is formed on the rear wall edge of the main heat exchange component. The inner ring step has a surrounding groove, and a rubber sealing ring is placed in the surrounding groove. The rubber sealing ring is clamped between the edge of the water channel cover plate 103 and the inner ring step for sealing. Then, the edge of the water channel cover plate 103 and the rear wall edge of the main heat exchange component are tightened and sealed with several screws. After several years of use, if the first heat exchange water tank 2A ​​and the second heat exchange water tank 3A have scale buildup or blockages that cause poor water flow, the screws can be unscrewed, the water channel cover plate 103 can be opened, and the scale in the first heat exchange water tank 2A ​​and the second heat exchange water tank 3A can be cleaned, facilitating maintenance.

[0027] Preferably, the first heat exchange channel 2 and the second heat exchange channel 3 are arranged in parallel horizontally or in parallel vertically. This can increase the length of the heat exchange channels within a limited volume, resulting in better heat exchange effect and a more aesthetically pleasing appearance.

[0028] Preferably, the first heat exchange channel 2 and the second heat exchange channel 3 are arranged in a meandering manner and extend at the same time, so that the lengths of the two heat exchange channels are about the same, resulting in a better heat exchange effect.

[0029] Preferably, the heat exchange component includes a front cover metal component 101 and a metal heat exchange aluminum component 102. The front cover metal component 101 is made of aluminum and integrally cast. The metal heat exchange aluminum component 102 is also made of aluminum and integrally cast. The front upper wall of the front cover metal component 101 has a front opening 11. The front of the metal heat exchange aluminum component 102 has a heat exchange channel 12 recessed. The bottom of the heat exchange channel 12 has a smoke outlet 13. The front cover metal component 101 is sealed and fixed to the metal heat exchange aluminum component 102. The front of the heat exchanger creates a heat exchange channel 12 inside. The side wall of the aluminum heat exchange component 102 has a first water inlet 21, a first water outlet 22, a second water inlet 31, and a second water outlet 32. The rear wall of the aluminum heat exchange component 102 directly has two exposed, meandering sections: a first heat exchange water tank 2A ​​and a second heat exchange water tank 3A. A water channel cover 103 is sealed and fixed to the rear wall of the aluminum heat exchange component 102, covering and blocking the openings of the first heat exchange water tank 2A ​​and the second heat exchange water tank 3A to form the first heat exchange water channel 2 and the second heat exchange water channel 3. This design further refines the structure of the heat exchange component, making it easier to design and manufacture the heat exchange channel 12, the first heat exchange water tank 2A, and the second heat exchange water tank 3A. The dual-water-path heat exchanger 1 is designed into three main components: a front cover metal component 101, an aluminum heat exchange component 102, and a water channel cover 103. This results in fewer components, easier assembly, cost savings, and higher production efficiency. A horizontal inner ring step is formed on the front wall edge of the aluminum heat exchange component 102. The inner ring step has a sealing groove and a rubber ring is placed in the sealing groove. The rubber ring is clamped between the edge of the front cover metal component 101 and the inner ring step for sealing. Then, the edge of the front cover metal component 101 and the rear wall edge of the aluminum heat exchange component 102 are tightened and sealed by several screws.

[0030] The bottom sidewall of the aluminum heat exchange component 102 is provided with a first water inlet 21 and a second water inlet 31, and the top sidewall is provided with a first water outlet 22 and a second water outlet 32, which are set in appropriate positions.

[0031] The bottom wall of the heat exchange channel 12 has several heat-absorbing plates 4 that extend vertically, and the heat-absorbing plates 4 are spaced 5 for heat flow, which improves the heat exchange efficiency.

[0032] The first heat exchange water channel 2 is used for heating water supply and is an internal circulating water heating system. The second heat exchange water channel 3 is used for domestic water supply, directly connected to the municipal tap water supply, without circulating water, allowing users to quickly connect water for domestic use. Water entering the second heat exchange water channel 3 is designed to minimize or avoid mixing with heating water, thus improving the quality of domestic water. The first inlet hole 21 is used to connect to the heating water inlet pipe, and the first outlet hole 22 is used to connect to the heating water outlet pipe. The second inlet hole 31 is used to connect to the domestic water inlet pipe, and the second outlet hole 32 is used to connect to the domestic water outlet pipe.

[0033] The dual-channel heat exchanger 1 has a first rod hole 61 on its side wall. The first rod hole 61 is sealed and fixedly installed with a first electronic magnesium rod 6 by a rubber sealing ring and nut assembly. The inner section of the first electronic magnesium rod 6 is inserted into the first heat exchange water channel 2. The first electronic magnesium rod can inhibit the growth of scale and prevent the water channel from narrowing and obstructing water flow.

[0034] That is, preferably, the side wall of the aluminum heat exchange component 102 is provided with a first rod hole.

[0035] The dual-channel heat exchanger 1 has a second rod hole 71 on its side wall. The second rod hole 71 is sealed and fixedly installed with a second electronic magnesium rod 7 by a rubber sealing ring and nut assembly. The inner section of the second electronic magnesium rod 7 is inserted into the second heat exchange water channel 3. The second electronic magnesium rod can inhibit the growth of scale and prevent the water channel from narrowing and obstructing water flow.

[0036] Preferably, the sidewall of the aluminum heat exchange component 102 has a second rod hole. The electronic magnesium rod is also known as an electronic anode rod.

[0037] The specific structure is as follows:

[0038] A high-efficiency dual-water-path heat exchanger, belonging to the heat exchange components of gas water heaters, is provided. The dual-water-path heat exchanger has a front opening, a heat exchange channel, and a flue outlet. The heat exchange component includes a front cover metal component, a metal heat exchange aluminum component, and a water channel cover. The front cover metal component has a front opening on its upper front wall. The front of the metal heat exchange aluminum component has a recessed heat exchange channel. A flue outlet is located at the bottom of the heat exchange channel on the metal heat exchange aluminum component. The front cover metal component is sealed and fixed to the front of the metal heat exchange aluminum component, forming an internal heat exchange channel. The rear wall of the metal heat exchange aluminum component directly forms a bare, meandering first and second heat exchange water tank. The water channel cover is sealed and fixed to the rear wall of the metal heat exchange aluminum component, covering and blocking the openings of the first and second heat exchange water tanks to form the first and second heat exchange water channels. The first and second heat exchange water channels are arranged horizontally or vertically in parallel. The first and second heat exchange channels are arranged in a parallel, meandering pattern. The bottom wall of each heat exchange channel has vertically extending, protruding heat-absorbing fins, with gaps between them for heat flow. The bottom side wall of the aluminum heat exchange component has a first and a second water inlet, and the top side wall has a first and a second water outlet. The side wall of the aluminum heat exchange component 102 has a first rod hole 61, which is sealed and fixedly installed with a first electronic magnesium rod 6 using a rubber sealing ring and nut assembly. The inner section of the first electronic magnesium rod 6 is inserted into the first heat exchange channel 2. The side wall of the aluminum heat exchange component 102 has a second rod hole 71, which is sealed and fixedly installed with a second electronic magnesium rod 7 using a rubber sealing ring and nut assembly. The inner section of the second electronic magnesium rod 7 is inserted into the second heat exchange channel 3. The first water inlet, the first heat exchange channel, and the first water outlet are connected as one unit, and the second water inlet, the second heat exchange channel, and the second water outlet are also connected as one unit; the two heat exchange channels each have independent water flow, and the water flowing through the two heat exchange channels directly absorbs the heat of the heat exchanger body for heat exchange.

Claims

1. A high-efficiency dual-water-circuit heat exchanger, belonging to the heat exchange components of gas water heaters, comprising a metal dual-water-circuit heat exchanger, the dual-water-circuit heat exchanger being provided with a front opening, a heat flow and exchange channel, and a flue gas outlet, characterized in that: The rear wall of the dual-water heat exchanger body directly forms a bare, meandering first heat exchange channel and a second heat exchange channel; both the first and second heat exchange channels are located on the rear wall of the heat exchange passage; the side wall of the dual-water heat exchanger has corresponding first inlet, first outlet, second inlet, and second outlet holes, which are integrated and connected, as are the second inlet, second heat exchange channel, and second outlet holes; the two heat exchange channels flow independently, and the water flowing through them directly absorbs heat from the heat exchanger body.

2. The high-efficiency heat exchange dual-water-path heat exchanger according to claim 1, characterized in that: The dual-water-path heat exchanger includes a heat exchange component and a water channel cover. The heat exchange component is provided with a front opening, a heat flow and exchange channel, and a flue gas outlet. The side wall of the heat exchange component is provided with a first water inlet, a first water outlet, a second water inlet, and a second water outlet. The rear wall of the heat exchange component is directly provided with a bare, tortuous first heat exchange water tank and a second heat exchange water tank. The water channel cover is sealed and fixed to the rear wall of the heat exchange component and covers the openings of the first heat exchange water tank and the second heat exchange water tank to form the first heat exchange water channel and the second heat exchange water channel.

3. The high-efficiency heat exchange dual-water-path heat exchanger according to claim 2, characterized in that: The first heat exchange channel and the second heat exchange channel are arranged in parallel horizontally or in parallel vertically.

4. The high-efficiency heat exchange dual-water-path heat exchanger according to claim 3, characterized in that: The first heat exchange water channel and the second heat exchange water channel are arranged in a parallel, meandering manner.

5. A high-efficiency heat exchange dual-water-path heat exchanger according to any one of claims 2 to 4, characterized in that: The heat exchange component includes a front cover metal component and a metal heat exchange aluminum component. The front upper wall of the front cover metal component has a front opening. The front of the metal heat exchange aluminum component has a recessed heat exchange channel. The bottom of the heat exchange channel has a flue gas outlet. The front cover metal component is sealed and fixed to the front of the metal heat exchange aluminum component to form a heat exchange channel inside. The side wall of the metal heat exchange aluminum component has a first water inlet, a first water outlet, a second water inlet, and a second water outlet. The rear wall of the metal heat exchange aluminum component directly has a bare, meandering first water exchange tank and a second water exchange tank. A water channel cover is sealed and fixed to the rear wall of the metal heat exchange aluminum component and covers and blocks the openings of the first and second water exchange tanks to form the first and second heat exchange water channels.

6. The high-efficiency heat exchange dual-water-path heat exchanger according to claim 5, characterized in that: The bottom sidewall of the aluminum heat exchange component is provided with a first water inlet and a second water inlet, and the top sidewall is provided with a first water outlet and a second water outlet.

7. A high-efficiency heat exchange dual-water-path heat exchanger according to any one of claims 2 to 4, characterized in that: The bottom wall of the heat exchange channel extends vertically and has several heat-absorbing plates protruding, with heat flow gaps between the heat-absorbing plates.

8. A high-efficiency heat exchange dual-water-path heat exchanger according to any one of claims 1 to 4, characterized in that: The first heat exchange water channel is used for heating water supply; the second heat exchange water channel is used for domestic water supply.

9. A high-efficiency heat exchange dual-water-path heat exchanger according to any one of claims 1 to 4, characterized in that: The main body of the dual-water heat exchanger has a first rod hole on its side wall. A first electronic magnesium rod is fixedly installed in the first rod hole in a sealed manner, and the inner section of the first electronic magnesium rod is inserted into the first heat exchange water channel.

10. A high-efficiency heat exchange dual-water-path heat exchanger according to any one of claims 1 to 4, characterized in that: The main body of the dual-water heat exchanger has a second rod hole on its side wall. A second electronic magnesium rod is fixedly installed in the second rod hole in a sealed manner, and the inner section of the second electronic magnesium rod is inserted into the second heat exchange water channel.

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