CN219868513U

CN219868513U - Condensing heat exchanger

Info

Publication number: CN219868513U
Application number: CN202223533705.9U
Authority: CN
Inventors: 陈如意; 冯青; 方欢
Original assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Current assignee: Haier Smart Home Co Ltd; Qingdao Economic and Technological Development Zone Haier Water Heater Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-10-20
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a condensing heat exchanger, comprising: the flue gas filter comprises a shell, wherein a flue gas inlet and a flue gas outlet are formed in the shell, a first air deflector is arranged in the shell, the first air deflector covers the lower part of the flue gas outlet, a space is formed between the first air deflector and the flue gas outlet, the fixed end part of the first air deflector is arranged on the inner wall of the shell, and the free end part of the first air deflector is provided with a flanging structure extending downwards; the heat exchange tube is arranged in the shell and is positioned below the first air deflector. The air deflector is added to guide the entering smoke so that the smoke and the heat exchange tube can exchange heat sufficiently, so that the heat exchange efficiency of the condensing heat exchanger is improved, and the energy consumption of the gas water heater is reduced.

Description

Condensing heat exchanger

Technical Field

The utility model belongs to the technical field of household appliances, and particularly relates to a condensing heat exchanger.

Background

At present, water heaters are household appliances commonly used in daily life of people, and the water heaters can be divided into gas water heaters, electric water heaters and solar water heaters according to different heat sources. In the use process, the hot water output by the water heater is output for a user to use through a user terminal (such as a faucet or a shower).

The heat exchanger in a gas water heater serves as an important component for heating the water flowing through. Chinese patent publication No. CN101545679a discloses a secondary heat exchanger of a condensing gas water heater, in the actual use process, high temperature flue gas generated after combustion of gas enters the heat exchanger and exchanges heat with an internal heat exchange tube. However, when the flue gas exchanges heat with the heat exchange tube of the heat exchanger, the heat exchange efficiency of the heat exchange tube close to the air inlet is higher, and the heat exchange efficiency of the heat exchange tube far away from the air inlet is lower, so that the heat of the flue gas is not fully utilized, and the overall heat exchange efficiency of the heat exchanger is lower.

In view of this, how to design a technology for improving the heat exchange efficiency of the heat exchanger to reduce the energy consumption of the gas water heater is a technical problem to be solved by the present utility model.

Disclosure of Invention

The utility model provides a condensing heat exchanger, which is characterized in that an air deflector is added to guide the entering smoke so as to enable the smoke to exchange heat with a heat exchange tube sufficiently, so that the heat exchange efficiency of the condensing heat exchanger is improved, and the energy consumption of a gas water heater is reduced.

In order to achieve the technical purpose, the utility model is realized by adopting the following technical scheme:

in one aspect, the present utility model provides a condensing heat exchanger comprising:

the flue gas filter comprises a shell, wherein a flue gas inlet and a flue gas outlet are formed in the shell, a first air deflector is arranged in the shell, the first air deflector covers the lower part of the flue gas outlet, a space is formed between the first air deflector and the flue gas outlet, the fixed end part of the first air deflector is arranged on the inner wall of the shell, and the free end part of the first air deflector is provided with a flanging structure extending downwards;

the heat exchange tube is arranged in the shell and is positioned below the first air deflector.

In an embodiment of the utility model, the first air deflector extends from the fixed end portion towards the free end portion in a downward inclined manner.

In an embodiment of the present utility model, the first air deflector is provided with a plurality of first air vents, and the first air vents are far away from the fixed end of the first air deflector.

In an embodiment of the present utility model, the first vent hole is formed on the flanging structure; and/or the first vent hole is formed at the free end of the first air deflector.

In an embodiment of the utility model, a second air deflector is arranged in the shell, the second air deflector covers the upper part of the flue gas inlet and is positioned at the lower part of the first air deflector, a plurality of second ventilation holes are formed in the second air deflector, and the heat exchange tube is positioned between the second air deflector and the flanging structure.

In an embodiment of the utility model, the second air deflector is of an inverted U-shaped structure, and the second air vent is arranged on the side part of the second air deflector adjacent to the heat exchange tube.

In an embodiment of the utility model, the flue gas inlet is located below the fixed end of the first air deflector, and the second air deflector is covered on the flue gas inlet.

In an embodiment of the utility model, the flue gas collection device further comprises a gas collection cover, wherein the top of the gas collection cover is provided with a communication port, the gas collection cover is arranged at the bottom of the shell, and the communication port is communicated with the flue gas inlet.

In an embodiment of the present utility model, the heat exchange tube has a bellows structure.

In an embodiment of the utility model, a drain pipe is further disposed on the bottom plate of the housing.

Compared with the prior art, the utility model has the advantages and positive effects that: shielding below the flue gas outlet by arranging the first air deflector in the shell, and further arranging a flanging structure on the first air deflector, in the use process, flue gas enters the shell through the flue gas inlet and then contacts with the heat exchange tube below the first air deflector for heat exchange, and the flue gas cannot continuously rise and is further limited by the flanging structure due to the limitation of the first air deflector in the rising process, so that the flue gas has a downward flowing trend in the shell, and the flue gas can exchange heat with the heat exchange tube below the first air deflector sufficiently, thereby improving the heat exchange efficiency of the condensing heat exchanger and reducing the energy consumption of the gas water heater.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic view of a condensing heat exchanger embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an embodiment of a condensing heat exchanger of the present utility model;

FIG. 3 is an exploded view of an embodiment of a condensing heat exchanger of the present utility model;

FIG. 4 is a schematic view of a partial structure of a shell in an embodiment of a condensing heat exchanger according to the present utility model;

FIG. 5 is a schematic view of a partial structure of a shell in an embodiment of a condensing heat exchanger according to the present utility model;

FIG. 6 is a schematic diagram of a gas water heater according to the present utility model;

FIG. 7 is a schematic view of a flow control mechanism according to an embodiment of the present utility model

FIG. 8 is a schematic view of a partial structure of an embodiment of a flow adjustment mechanism according to the present utility model;

FIG. 9 is a partial exploded view of an embodiment of the flow regulating mechanism of the present utility model;

FIG. 10 is a partial cross-sectional view of an embodiment of a flow adjustment mechanism of the present utility model;

FIG. 11 is a schematic illustration of one of the constructions of the valve housing in an embodiment of the flow regulating mechanism of the present utility model;

FIG. 12 is a second schematic view of the valve housing in an embodiment of the flow regulating mechanism of the present utility model;

FIG. 13 is a cross-sectional view of a valve housing in an embodiment of a flow regulating mechanism of the present utility model;

FIG. 14 is a schematic view of a first shutter member in an embodiment of the flow adjustment mechanism of the present utility model;

FIG. 15 is a second schematic view of a first shielding member in an embodiment of the flow adjustment mechanism according to the present utility model;

FIG. 16 is a schematic view of the flow adjustment mechanism of the present utility model in a first position;

FIG. 17 is a schematic view of the flow adjustment mechanism of the present utility model between a first position and a second position;

FIG. 18 is a schematic view of the flow adjustment mechanism of the present utility model in a second position;

FIG. 19 is a schematic view of the flow adjustment mechanism of the present utility model between a second position and a third position;

fig. 20 is a schematic view of the flow regulating mechanism of the present utility model in a third position.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, in the description of the present utility model, terms such as "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus are not to be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

An embodiment of the present utility model provides a condensing heat exchanger, as shown in fig. 1 to 5, including:

the device comprises a shell 3100, wherein a flue gas inlet 3101 and a flue gas outlet 3102 are formed in the shell 3100, a first air deflector 3110 is arranged in the shell 3100, the first air deflector 3110 covers the lower portion of the flue gas outlet 3102, a space is formed between the first air deflector 3110 and the flue gas outlet 3102, the fixed end portion of the first air deflector 3110 is arranged on the inner wall of the shell 3100, and a flanging structure 3111 extending downwards is arranged at the free end portion of the first air deflector 3110;

the heat exchange tube 3200, the heat exchange tube 3200 is disposed in the housing 3100, and the heat exchange tube is located below the first air deflector 3110.

Specifically, during actual assembly, the heat exchange tube 3200 is placed in the housing 3100 and disposed below the first air deflection 3110. In use, the condensing heat exchanger is arranged in the shell of the gas water heater and above the combustion chamber. High temperature flue gas generated by combustion of the gas in the combustion chamber enters the housing 3100 via the flue gas inlet 3101.

Wherein, the high temperature flue gas entering the housing 3100 will exchange heat with the heat exchange tube 3200, but the high temperature flue gas is limited by the blocking of the first air deflector 3110 and will not be directly output from the flue gas outlet 3102 at the top. Under the action of the first air deflector 3110, the flue gas is limited to the bottom of the first air deflector 3110, so that the flue gas can perform heat exchange with the heat exchange tube 3200 sufficiently. Moreover, the free end of the first air deflector 3110 is provided with a flange structure 3111 extending downward, and flue gas entering the housing 3100 can be forced to bypass the lower edge of the flange structure 3111 by the flange structure 3111 and then can be output from the flue gas outlet 3102, so that the heat exchange time between the flue gas and the heat exchange tube 3200 is prolonged to the maximum extent.

In another embodiment, the heat exchange tube 3200 is a bellows structure. Specifically, the heat exchange tube 3200 may be formed by coiling more than 3 layers of stainless steel corrugated pipes, and each layer of coiled pipes are in parallel connection, so that the overall water resistance is reduced. A drain pipe (not shown) is provided on the bottom plate of the housing, and condensed water in the housing 3100 is drained through the drain pipe.

In one embodiment of the present utility model, the first air deflector 3110 extends obliquely downward from the fixed end toward the free end.

Specifically, in order to reduce wind resistance to the flue gas and guide the flue gas to smoothly flow in the housing 3100, the first air deflector 3110 is disposed in the housing 3100 in an inclined arrangement. The fixed end position of the first air deflector 3110 is higher, and after the flue gas enters the housing 3100, the flue gas flows along the first air deflector 3110 toward the flanging structure 3111, and finally rises to the top of the housing 3100 around the flanging structure 3111 and is output from the flue gas outlet 3102.

In another embodiment, the first air guide plate 3110 is provided with a plurality of first air holes 3112, and the first air holes 3112 are far away from the fixed end of the first air guide plate 3110.

Specifically, in order to reduce wind resistance more effectively and ensure smooth output of the flue gas, a plurality of first ventilation holes 3112 are further formed in the first air deflector 3110, in the use process, part of the flue gas can pass through the first ventilation holes 3112 and can be discharged, and the rest of the flue gas bypasses the bottom of the flanging structure 3111 and flows to the flue gas outlet 3102.

In some embodiments, for the distribution position of the first ventilation holes 3112, the first ventilation holes 3112 may be formed on the cuff structure 3111; and/or, a first vent 3112 is formed at a free end of the first air deflector 3110.

In another embodiment of the present utility model, a second air deflector 3120 is disposed in the housing 3100, the second air deflector 3120 is covered above the flue gas inlet 3101 and is located at the lower part of the first air deflector 3110, a plurality of second air ventilation holes 3121 are disposed on the second air deflector 3120, and the heat exchange tube 3200 is located between the second air deflector 3120 and the flanging structure 3111.

Specifically, in order to effectively disperse the flue gas entering the housing 3100 and more uniformly disperse the flue gas to each position of the heat exchange tube 3200, a second air deflector 3120 is additionally arranged in the housing 3100, and the second air deflector 3120 covers the flue gas inlet 3101, so that after the flue gas enters the heat exchange tube 3200 through the flue gas inlet 3101, the flue gas is output from the second ventilation hole 3121 and flows transversely to one side of the heat exchange tube 3200, and further, the flue gas flow is uniformly distributed to the heat exchange tube 3200 in the height direction, so that the heat exchange uniformity of the heat exchange tube 3200 is effectively improved.

In an embodiment, the second air guiding plate 3120 has an inverted U-shaped structure, and the second air guiding plate 3120 is provided with a second ventilation hole 3121 adjacent to the side of the heat exchange tube 3200.

Specifically, the second air deflector 3120 with the inverted U-shaped structure can effectively cover the upper portion of the flue gas inlet 3101, the second air deflector 3120 forms a buffer zone for the flue gas entering the housing 3100, and the second air vent 3121 formed at one side of the second air deflector 3120 is compared with the adjacent heat exchange tube 3200, so that the output flue gas can be ensured to directly enter the region where the heat exchange tube 3200 is located, so as to improve the heat exchange efficiency.

In one embodiment, the flue gas inlet 3101 is located below the fixed end of the first air deflector 3110 and the second air deflector 3120 covers the flue gas inlet 3101.

Specifically, the flue gas output from the second ventilation hole 3121 will be conveyed towards the flanging structure 3111 direction, and in the conveying process, the flue gas rises and flows onto the first air deflector 3110, and the flue gas is guided via the first air deflector 3110 arranged obliquely, so that the flue gas can be ensured to exchange heat with the heat exchange tube 3200 uniformly, and smooth flow of the flue gas in the housing 3100 can be ensured, so that influence of wind resistance is reduced, and smooth smoke discharge is ensured.

In an embodiment of the present utility model, the air-collecting hood further comprises an air-collecting hood 3300, wherein a communication port 3301 is arranged at the top of the air-collecting hood 3300, the air-collecting hood 3300 is arranged at the bottom of the shell 3100, and the communication port 3301 is communicated with the flue gas inlet 3101.

Specifically, in order to better collect the flue gas generated by the combustion chamber in the gas water heater, a gas collecting cover 3300 is configured at the bottom of the shell 3100, and the gas collecting cover 3300 can better cooperate with the top of the combustion chamber to collect the flue gas and guide the flue gas to enter the shell 3100.

In the second embodiment, as shown in fig. 6, the present utility model provides a gas water heater, which includes a water heater main body, wherein a total water inlet port 1000 and a total water outlet port 2000 are provided on a housing of the water heater main body, a combustion chamber 6000 and the condensing heat exchanger 3000 in the first embodiment are provided in the water heater main body, the total water inlet port 1000 is connected with an inlet of a heat exchange tube in the condensing heat exchanger 3000, and the total water outlet port 2000 is connected with an outlet of the heat exchange tube in the condensing heat exchanger 3000.

Specifically, the condensing heat exchanger 3000 is disposed at the top of the combustion chamber 6000, and high-temperature flue gas generated by combustion of fuel gas in the combustion chamber 6000 enters the condensing heat exchanger 3000 to heat water flowing therethrough.

In another embodiment, as shown in fig. 7-15, a flow adjustment mechanism 4000 is also provided in the housing; flow adjustment mechanism 4000 includes:

a valve housing 1, wherein a water inlet pipe 11, a first water outlet pipe 12 and a second water outlet pipe 13 are arranged on the valve housing 1;

the valve core assembly 2, the valve core assembly 2 comprises a driving part 21, a first flow control part 22 and a second flow control part 23, the first flow control part 22 and the second flow control part 23 are arranged in the valve shell 1, the first flow control part 22 is arranged at the first water outlet pipe 12 and is used for controlling the flow rate of the first water outlet pipe 12, and the second flow control part 23 is arranged at the second water outlet pipe 13 and is used for controlling the flow rate of the second water outlet pipe 13;

the water inlet pipe is connected with the total water inlet port 1000, the first water outlet pipe is connected with the inlet of the condensing heat exchanger 3000, and the outlets of the second water outlet pipe and the condensing heat exchanger 3000 are respectively connected with the total water outlet port 2000.

Specifically, the water heater heats the water flowing into the water heater through the condensing heat exchanger, and the second water outlet pipe of the flow adjusting mechanism 4000 can be connected to the water pipe between the condensing heat exchanger 3000 and the total water outlet port 2000 through the bypass pipe 5000, so as to directly convey cold water to the total water outlet port 2000 through the bypass pipe 5000, and mix cold water and hot water.

The flow rate adjusting mechanism 4000 is assembled by the valve housing 1 and the valve core assembly 2, wherein the valve housing 1 is provided with the water inlet pipe 11, the first water outlet pipe 12 and the second water outlet pipe 13, so that the valve housing 1 is of a three-way structure as a whole.

When the valve is assembled, the driving part 21, the first flow control part 22 and the second flow control part 23 are assembled on the valve casing 1, the driving part 21 can drive the first flow control part 22 and the second flow control part 23 to move inside the valve casing 1, the first flow control part 22 in the moving process can adjust the water outlet flow of the first water outlet pipe 12, and the second flow control part 23 can adjust the water outlet flow of the second water outlet pipe 13.

Wherein the flow adjustment mechanism 4000 has a first position, a second position, and a third position. In the process of sequentially operating the flow regulating mechanism 4000 from the first position, the second position and the third position, the driving part 21 is used for driving the first flow control part 22 to gradually reduce the flow of the first water outlet pipe 12, and in the process of reversely operating, the driving part 21 is used for driving the first flow control part 22 to gradually increase the flow of the first water outlet pipe 12. In the process of running the flow regulating mechanism 4000 from the second position to the third position, the driving part 21 is used for driving the second flow control part 23 to gradually increase the flow of the first water outlet pipe 12, and in the process of running in the opposite direction, the driving part 21 is used for driving the second flow control part 23 to gradually decrease the flow of the first water outlet pipe 12.

Specifically, the flow adjustment mechanism 4000 has three specific positions, specifically: in the state of the first position of the flow regulating mechanism, the first flow control component 22 controls the first water outlet pipe 12 to be at the maximum opening degree, and the second flow control component 23 closes the second water outlet pipe 13; in the state of the second position of the flow regulating mechanism, the second flow control part 23 is in a critical state of switching the second water outlet pipe 13; in the state of the flow rate adjusting mechanism at the third position, the first flow control member 22 controls the first water outlet pipe 12 to be at the minimum opening degree, and the second flow control member 23 controls the second water outlet pipe 13 to be at the maximum opening degree.

In an embodiment of the present utility model, the second flow control member 23 closes the second water outlet pipe 13 when the flow control mechanism 4000 is operated from the first position to the second position, and the second flow control member 23 closes the second water outlet pipe 13 when the flow control mechanism is operated in the reverse direction.

In the practical application process, the flow regulating mechanism is arranged on the water heater. For the water heater, the water heater generally comprises a water heater main body, wherein the water heater main body is provided with a total water inlet port and a total water outlet port, and is also provided with a condensing heat exchanger and further comprises the flow regulating mechanism; the inlet pipe of the flow regulating mechanism 4000 is connected with the total water inlet port 1000, the first water outlet pipe of the flow regulating mechanism 4000 is connected with the inlet of the condensing heat exchanger 3000, and the second water outlet pipe of the flow regulating mechanism 4000 and the outlet of the condensing heat exchanger 3000 are respectively connected with the total water outlet port 2000. The main water inlet port is connected with a water supply pipe (such as a tap water pipe) in the user's home, and the main water outlet port is connected with a water terminal (such as a shower or a tap water) through the water pipe in the user's home.

In a specific use process, the condensing heat exchanger is used for opening the water terminal to output hot water outwards, and then the condensing heat exchanger is started to heat the water flowing through.

As shown in fig. 16-20, the state change of the flow rate adjusting mechanism from the first position to the third position is represented, wherein the dashed arrow represents the water flow direction.

In the normal heating process, the flow regulating mechanism is at the first position, and at this time, the first flow control component 22 regulates the first water outlet pipe 12 to be at the maximum opening degree so as to obtain the maximum water flow; at the same time, the second flow control member 23 is in a position to close the second water outlet pipe 13, i.e. the bypass flow path is in a blocked position.

In the normal water use process, as shown in fig. 16-18, the power of the condensing heat exchanger is reduced due to the influence of external factors, and at this time, the flow of the first water outlet pipe 12 needs to be regulated. At this point, the flow adjustment mechanism will change between the first position and the second position. The driving part 21 acts to drive the first flow control part 22 and the second flow control part 23 to act, and the first flow control part 22 correspondingly adjusts the opening degree of the first water outlet pipe 12 so as to reduce water flow and further realize that the water temperature output by the water heater is kept constant; and the second water outlet pipe 13 is not opened for the second flow control member 23. In this process, according to the difference between the water outlet temperature and the set temperature of the water heater, the driving part 21 drives the first flow control part 22 to move in the forward and backward directions, so as to dynamically adjust the water outlet temperature.

In the case that the outlet water temperature of the water heater is continuously higher, the water flow entering the condensing heat exchanger needs to be further reduced, and meanwhile, the bypass water flow is started. At this time, as shown in fig. 19 to 20, the flow rate adjusting mechanism will change between the second position and the third position, the driving part 21 acts to drive the first flow control part 22 and the second flow control part 23 to act, the first flow control part 22 will correspondingly decrease the opening of the first water outlet pipe 12 to decrease the water flow rate, and the first flow control part 22 will correspondingly increase the opening of the first water outlet pipe 12 to increase the water flow rate. In this way, the water flow ratio of the first water outlet pipe 12 and the second water outlet pipe 13 can be regulated and controlled in the process of changing between the second position and the third position by the water control device, and then the bypass duty ratio is dynamically regulated, so that the water temperature output by the water heater is kept constant.

In addition, when the user normally uses the water heater, when the user uses water twice in a short time, the flow regulating mechanism changes between the second position and the third position, so as to reduce the flow rate of cold water flowing into the condensing heat exchanger and the mixing proportion of hot water and cold water output by the condensing heat exchanger, improve the lowest temperature of water flowing out of the water heater, reduce the highest temperature of water flowing out of the water heater, further meet the requirement of constant-temperature water outlet of the water heater, and further improve the shower experience of the user.

In an embodiment of the present utility model, the first flow control member 22 includes a rotational movement member 221 and a first shielding member 222, and the first shielding member 222 is disposed on the rotational movement member 221;

the second flow control member 23 includes a mounting member 231 and a second shielding member 232, the second shielding member 232 being disposed on the mounting member 231;

wherein, the driving part 21 is connected with the rotating moving part 221 and is used for driving the rotating moving part 221 to rotate, the rotating moving part 221 rotates relative to the valve casing 1 and moves relatively, the first shielding part 222 is arranged in the valve casing 1 and is positioned at one side of the first water outlet pipe 12, the mounting part 231 is slidably arranged on the rotating moving part 221, and the second shielding part 232 is arranged opposite to the second water outlet pipe 13.

Specifically, for the first flow control member 22, the rotational movement member 221 is connected to the driving member 21 outside the valve housing 1 to rotate the rotational movement member 221 by the driving member 21. While the rotational movement member 221 is driven by the driving member 21 to rotate with respect to the valve housing 1, the rotational movement member 221 is also movable along its axis with respect to the valve housing 1.

In this way, in the process of adjusting the opening of the first water outlet pipe 12 to control the flow rate of the water flow, the first shielding member 222 is disposed at the pipe orifice side of the first water outlet pipe 12, and the flow rate of the first water outlet pipe 12 is adjusted in a rotating manner. The first shielding component 222 adjusts the flow of the first water outlet pipe 12 in a rotating mode, so that the flow is adjusted more accurately, the requirement of gradual step-by-step adjustment is met, and the requirement of adjusting the flow of water entering the condensing heat exchanger under different working conditions of the water heater is met.

In the process of adjusting the opening of the second water outlet pipe 13 to control the water flow, the second shielding component 232 and the pipe orifice of the second water outlet pipe 13 are arranged relatively, and the flow of the second water outlet pipe 13 is adjusted in a relatively moving manner. The second shielding part 232 adjusts the flow of the second water outlet pipe 13 in a relative movement mode, so that the flow is adjusted more efficiently, the water temperature is adjusted rapidly, and the water heater can meet the requirement of constant-temperature water outlet.

In another embodiment of the present utility model, the first shielding member 222 has a sleeve structure, a water flow channel is formed between the first shielding member 222 and the rotating moving member 221, and a water port 2221 is provided on a side wall of the first shielding member 222; the water flowing in from the water inlet pipe 11 flows into the first water outlet pipe 12 sequentially through the water flow passage and the water passing port 2221.

Specifically, in order to conveniently adjust the flow rate of the first water outlet pipe 12 by adopting a rotating manner, the first shielding component 222 adopts a sleeve structure, the first shielding component 222 is arranged on the rotating moving component 221 and rotates along with the rotating moving component, the water through hole 2221 can relatively rotate relative to the pipe orifice of the first water outlet pipe 12, and in the rotating process, the overlapping area of the water through hole 2221 and the pipe orifice of the first water outlet pipe 12 is changed, so that the flow rate of the first water outlet pipe 12 is dynamically adjusted.

In an embodiment, the outer surface of the side wall of the first shielding member 222 is further provided with a water tank 2222 communicating with the water port 2221, and the water tank 2222 extends in a direction away from the water port 2221 about the axis of the rotary moving member 221.

Specifically, in the adjusting process of the water flow of the first water outlet pipe 12, the water flow can be adjusted rapidly by adjusting the overlapping area of the water through hole 2221 and the pipe orifice of the first water outlet pipe 12. After the water through hole 2221 is staggered from the nozzle of the first water outlet pipe 12, the water tank 2222 is kept in a communicated state with the nozzle of the first water outlet pipe 12, so that more accurate water flow adjustment can be performed through the water tank 2222.

In one embodiment, the water flow cross-sectional area of the water tank 2222 gradually decreases in a direction away from the water passage port 2221 about the axis of the rotary movement member 221. Specifically, the water flow cross-sectional area of the water tank 2222 is gradually changed, so that the water flow rate of the nozzle of the first water outlet pipe can be more finely and accurately adjusted in the process that the driving component 21 drives the rotating and moving component 221 to rotate in one direction.

The basin 2222 of gradual change structure can be in carrying out high accuracy bypass than the adjustment in-process, can reach more accurate regulation, and then the water temperature of the water heater of accurate regulation to satisfy more accurate temperature and adjust.

In some embodiments, a first partition 121 is disposed in the first water outlet pipe 12, and a first water outlet 122 is disposed on the first partition 121, where the first water outlet 122 is used to communicate with the water port 2221 and the water tank 2222.

Specifically, in order to conveniently control the opening of the first water outlet pipe 12 to accurately adjust the water flow, a first water outlet 122 that is matched with the water inlet 2221 and the water tank 2222 is formed on the first partition 121. In the process that the first shielding component 222 follows the rotation moving component 221 to rotate, the water through hole 2221 and the water tank 2222 can rotate relative to the first water outlet 122 and achieve communication, so that the water outlet flow of the first water outlet pipe 12 can be controlled more accurately.

In some embodiments, the first partition 121 is further provided with an auxiliary water outlet 123, and the water inlet pipe 11 is communicated with the auxiliary water outlet 123.

Specifically, by disposing the auxiliary water outlet 123 on the first partition 121, the auxiliary water outlet 123 is in a normally open state and is always communicated with the water inlet pipe 11, so that the basic water flow requirement of the first water outlet pipe 12 can be ensured through the auxiliary water outlet 123.

The first water outlet 122 may be a bar-shaped hole, and the bar Kong Raozhuai is disposed to extend in the axial direction of the moving member 221.

Specifically, the first water outlet 122 of the strip-shaped hole structure can be better matched with the water through hole 2221 and the water tank 2222 on the first shielding component 222 which rotate, the first shielding component 222 sequentially overlaps and matches the water through hole 2221 and the water tank 2222 along the length direction of the first water outlet 122 in the rotating process, and then the matching degree can be improved, so that the effect of accurately controlling the water flow rate is met.

Because the first partition 121 is provided with the first water outlet 122 and the auxiliary water outlet 123, in order to more accurately control and regulate the water flow of the first water outlet pipe 12, in the process that the flow regulating mechanism 4000 sequentially operates from the first position, the second position and the third position, the first water outlet 122 is sequentially communicated with the water through hole 2221 and the water tank 2222.

In another embodiment, a second partition plate 131 is disposed in the second water outlet pipe 13, and a second water outlet 132 is disposed on the second partition plate 131.

Specifically, for the second water outlet pipe 13, in order to meet the requirement of accurately regulating and controlling the water flow, a second partition plate 131 may be disposed in the second water outlet pipe 13, and a second water outlet 132 is correspondingly disposed on the second partition plate 131, where the second water outlet 132 is disposed opposite to the second flow control member 23. In the process of flow control, the second flow control part 23 moves along with the rotating moving part 221, and the second shielding part 232 in the second flow control part 23 can switch the second water outlet 132 in the moving process, and the accurate adjustment of the water flow of the second water outlet 132 is realized by controlling the distance between the second shielding part 232 and the second water outlet 132.

In an embodiment, the water outlet areas of the auxiliary water outlet 123 and the second water outlet 132 are designed to be the same, so that after the flow regulating mechanism is at the third position, the first water outlet 122 is blocked by the first blocking member 222, the first water outlet pipe 12 is filled with water through the auxiliary water outlet 123, and meanwhile, the second water outlet 132 in the second water outlet pipe 13 is completely opened. So as to realize that the water outlet flow rates of the auxiliary water outlet 123 and the second water outlet 132 are basically the same, and further meet the condition that the water outlet flow rates of the first water outlet pipe 12 and the second water outlet pipe 13 reach basically the same state.

In this state, the flow regulating mechanism controls the water flow through the small areas of the auxiliary water outlet 123 and the second water outlet 132, so that the total water inflow of the flow regulating mechanism is reduced, the heat release in the condensing heat exchanger in the water heater is slower, the lowest point of the water temperature of the mixed water is larger, and the water temperature approaches to the target water outlet temperature, thereby improving the user experience.

In a certain embodiment, in order to firmly and firmly mount the rotary moving member 221, so as to ensure that the rotary moving member 221 can be stably moved while rotating inside the valve housing 1, the second diaphragm 131 is further provided with a support hole 133, and the other end portion of the rotary moving member 221 is inserted into the support hole 133.

Specifically, during the assembly, the rotational movement member 221 is inserted into the valve housing 1 such that one end portion of the rotational movement member 221 is inserted into the support hole 133, and then the other end portion is connected with the driving member 21 outside the valve housing 1. In this way, both end portions of the rotary movement member 221 can be well supported to ensure stable rotation and movement of the rotary movement member 221 within the valve housing 1.

In some embodiments, to meet the requirement that the flow regulating mechanism is operated between the first position and the second position, the second water outlet pipe 13 is in a closed state, and when operated between the second position and the third position, the second water outlet pipe 13 is in an open state. The mounting member 231 is also designed to have a sleeve structure, the mounting member 231 is sleeved on the rotating moving member 221, an elastic member 233 is further arranged between the mounting member 231 and the rotating moving member 221, and the elastic member 233 is used for applying an elastic force to the mounting member 231 towards the direction of the second partition plate 131; the other end of the rotation moving member 221 is provided with a blocking piece 223, and the blocking piece 223 is located between the second partition 131 and the mounting member 231.

Specifically, the mounting member 231 is fitted over the rotational movement member 221, and the mounting member 231 is slidable with respect to the rotational movement member 221, and the elastic member 233 functions to apply elastic force to the mounting member 231.

When the flow rate adjusting mechanism is operated between the first position and the second position, a certain interval is provided between the baffle 223 and the mounting part 231, the elastic part 233 applies elastic force to the mounting part 231 so that the mounting part 231 does not move relative to the valve housing 1, and the second water outlet 132 on the second partition plate 131 is closed by the second shielding part 232, at this time, the rotary moving part 221 can rotate and move relative to the mounting part 231.

When the flow regulating mechanism is operated between the second position and the third position, the blocking piece 223 will abut against the mounting part 231, so that the mounting part 231 moves together with the rotating moving part 221, and at this time, the second blocking part 232 will open the second water outlet 132.

Wherein the elastic member 233 is a spring, and the rotating moving member 221 is provided with a step surface; the inside of the mounting member 231 is provided with a spring seat 234, the spring seat 234 is provided with a through hole (not labeled) through which the rotation moving member 221 passes, the spring is sleeved on the rotation moving member 221, and the spring is located between the spring seat 234 and the step surface.

Specifically, the spring is also sleeved outside the rotary moving member 221 so as to be located between the stepped surface and the spring seat 234, and thus the spring force can be applied to the mounting member 231 by the spring.

In another embodiment, in order to better meet the requirement of water flow rate adjustment, the water inflow of the water inlet pipe 11 can also be adjusted according to needs, the first shielding component 222 is further provided with a shielding extension portion 2223, the shielding extension portion 2223 extends away from the water through hole 2221 along the axial direction of the rotating moving component 221, and the shielding extension portion 2223 is used for partially shielding the pipe orifice of the water inlet pipe 11.

Specifically, in the process of sequentially operating the flow adjustment mechanism 4000 from the first position, the second position, and the third position, the first shielding member 222 rotates along with the rotation movement member 221, the shielding extension portion 22232223 gradually approaches the nozzle of the water inlet pipe 11, and then the shielding extension portion 2223 is utilized to partially shield the nozzle of the water inlet pipe 11, so as to reduce the inflow of water into the water inlet pipe 11.

By reducing the water inflow of the water inlet pipe 11, the effect of reducing the water outflow of the first water outlet pipe 12 can be better satisfied. In addition, when the flow adjusting mechanism 4000 is at the third position, the first water outlet pipe 12 is used for discharging water through the auxiliary water outlet 123 with a smaller area, meanwhile, the second water outlet pipe 13 is also used for discharging water through the second water outlet with a smaller area, at this time, the shielding extension part 2223 is used for shielding the water inlet pipe 11 to the greatest extent, so that the water inflow is reduced more effectively, the total water inflow is further reduced, the adjustment of cold water and hot water is performed more efficiently, and the water outlet temperature of the user side is ensured to be constant.

In one embodiment, the water through hole 2221 and the shielding extension 2223 are arranged in a staggered manner about the axis of the rotary moving member 221.

Specifically, the water inlet pipe 11 and the first water outlet pipe 12 are disposed at the side of the valve housing 1, the second water outlet pipe 13 is disposed at one end of the valve housing 1, and the driving part 21 is disposed at the other end of the valve housing 1.

The inlet pipe 11 and the first outlet pipe 12 are arranged substantially perpendicular to the axial direction of the rotary moving member 221, and the second outlet pipe 13 is arranged along the axial direction of the rotary moving member 221. The water inlet pipe 11 and the first water outlet pipe 12 are distributed in a back-to-back arrangement manner, so that the water through holes 2221 and the shielding extension parts 2223 are arranged in a staggered manner to meet the requirements of the water inlet pipe 11 and the first water outlet pipe 12 at different positions on water flow adjustment.

In some embodiments of the present utility model, in order to meet the installation requirement of the rotary moving part 221, the driving part 21 is made to move synchronously during the process of driving the rotary moving part 221 to rotate. A sliding guide portion 2211 and a screw portion 2212 are sequentially provided at one end of the rotational movement member 221 from outside to inside; the slide guide 2211 is connected to the driving member 21, and the slide guide 2211 rotates following the driving member 21 and is slidable with respect to the driving member 21; the valve cartridge assembly 2 further includes a sleeve 24, the sleeve 24 being provided with a threaded hole (not labeled), the rotary moving member 221 passing through the sleeve 24, the threaded portion 2212 being screwed into the threaded hole, the sleeve 24 being provided on the valve housing 1.

Specifically, after the rotary moving member 221 is inserted into the valve housing 1, the end portion located in the valve housing 1 is supported and mounted by the second diaphragm 131. While the end portion located outside the valve housing 1 is mounted on the valve housing 1 through the sleeve 24, and at the same time, the slide guide portion 2211 is connected with the driving member 21. The sleeve 24 is coupled to the rotational movement member 221 such that the rotational movement member 221 is reciprocally moved by the threaded portion 2212 engaged with the threaded hole during rotation.

The expression entity of the sliding guide portion 2211 may be a gear structure disposed on the rotating moving member 221, the guide ribs are distributed on an outer periphery of the rotating moving member 221, the driving member 21 may be a motor, and an inner gear ring structure is disposed on a rotating shaft of the motor, and the gear structure and the gear ring structure cooperate to satisfy a requirement of the rotating moving member 221 for rotation, and a requirement of the rotating moving member 221 for sliding in a rotating process.

In one embodiment of the present utility model, in order to meet the requirements for sealing installation between the valve housing 1 and the associated assembly, a first sealing ring 25 is further provided between the rotary moving member 221 and the inner wall of the sleeve 24.

Specifically, after the sleeve 24 is sealingly attached to one end portion of the valve housing 1, the rotary motion member 221 is attached to the sleeve 24, and the sleeve 24 and the rotary motion member 221 are sealingly disposed by the first seal ring 25.

Similarly, a second seal ring 26 is provided between the rotary moving member 221 and the inner wall of the mounting member 231.

Specifically, the mounting member 231 is sleeved outside the rotary moving member 221, and the connection portion formed therebetween is sealed by the second seal ring 26, so that water entering the valve housing 1 from the water inlet pipe 11 is not flowed into the second water outlet pipe 13 from a gap formed between the mounting member 231 and the rotary moving member 221 to be outputted, to ensure sealability, and to improve water flow control accuracy of the second water outlet pipe 13.

In one embodiment, the second partition 131 forms a groove structure 134, and a supporting hole 133 and a second water outlet 132 are arranged at the bottom of the groove structure 134; the second shielding member 232 is of an annular structure and is sleeved on the rotary moving member 221, and the second shielding member 232 is used for sealing the outer edge of the groove structure 134.

Specifically, in order to open and close the second water outlet 132 through the second blocking member 232, the second water outlet 132 is disposed in the groove structure 134 formed by the second partition 131, and when the second water outlet 132 is closed, only the edge of the groove structure 134 needs to be blocked and closed, so that the second water outlet 132 can be closed.

Wherein the end surface of the mounting member 231 opposite to the second partition plate 131 is provided with an annular groove (not marked), in which the second shielding member 232 is provided. Specifically, the second shielding member 232 may be a sealing member such as a rubber ring or a silicone ring, and the second shielding member 232 is disposed in an annular groove of the mounting member 231 to complete the mounting, and seals the edge of the groove structure 134 by the second shielding member 232 to close the second water outlet 132.

In addition, the second partition plate 131 is further provided with a first inclined surface extending outward around the groove structure 134, the first inclined surface forming a flare structure, and an end of the mounting member 231 opposite to the second partition plate 131 is provided with a second inclined surface forming a cone structure.

Specifically, the conical head structure formed by the mounting component 231 is matched with the bell mouth structure formed on the second partition plate 131, so that the flow regulation precision of the second water outlet 132 can be regulated more finely, and further, when the water heater performs water outlet temperature control, more fine bypass ratio control is obtained, and the water temperature is kept constant more favorably.

In one embodiment, the side wall of the rotating moving member 221 is provided with a connecting rod 27 extending outwards, the first shielding member 222 is provided with a connecting hole 2224, and the connecting rod 27 is inserted into the connecting hole 2224.

Specifically, the connecting rod 27 is matched with the connecting hole 2224, so that the first flow control component 22 is installed on the rotating moving component 221, on one hand, the installation requirement of the first flow control component 22 is met, and on the other hand, the connecting rod 27 is arranged on the rotating moving component 221 and cannot block the flow of water flow, so that the requirement of smooth water flow conveying is met.

Compared with the prior art, the utility model has the advantages and positive effects that: through setting up the case subassembly in the valve casing, the drive component in the case subassembly can drive first accuse flow part and second accuse flow part at the valve casing internal movement, first accuse flow part can be at the continuous flow of adjusting first outlet pipe of activity in-process, and then satisfy the purpose that water heater heating power changes and need adjust rivers, and the second accuse flow part can be at the in-process of short-time switch water, adjust bypass flow and with the mixed volume of accurate control cold and hot water, and then reach the undulant purpose of reduction water heater play water temperature, through flow adjustment mechanism with accurate regulation discharge in order to reduce water heater's play water temperature fluctuation, and then improve user experience nature.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. A condensing heat exchanger, comprising:

2. The condensing heat exchanger of claim 1, wherein the first air deflection extends obliquely downward from the fixed end toward the free end.

3. The condensing heat exchanger of claim 1, wherein the first air deflection is provided with a plurality of first vent holes, the first vent holes being remote from a fixed end of the first air deflection.

4. A condensing heat exchanger according to claim 3 wherein said first vent is formed in said flange structure; and/or the first vent hole is formed at the free end of the first air deflector.

5. The condensing heat exchanger of claim 1, wherein a second air deflector is disposed in the housing, the second air deflector covers over the flue gas inlet and is located at a lower portion of the first air deflector, a plurality of second ventilation holes are disposed on the second air deflector, and the heat exchange tube is located between the second air deflector and the flanging structure.

6. The condensing heat exchanger of claim 5, wherein the second air deflector is of an inverted U-shaped structure, and the second air deflector is provided with the second ventilation holes adjacent to the side of the heat exchange tube.

7. The condensing heat exchanger of claim 6, wherein the flue gas inlet is located below the fixed end of the first air deflector and the second air deflector is shrouded on the flue gas inlet.

8. The condensing heat exchanger of any one of claims 1-7, further comprising a gas-collecting hood, wherein a top of the gas-collecting hood is provided with a communication port, the gas-collecting hood is disposed at a bottom of the housing, and the communication port is in communication with the flue gas inlet.

9. The condensing heat exchanger of any one of claims 1-7, wherein the heat exchange tubes are of bellows construction.

10. The condensing heat exchanger of any one of claims 1-7, wherein a drain is further provided on the bottom plate of the housing.