Balanced water heater shell and balanced water heater comprising same

Abstract

The balanced water heater shell comprises a box body and an air inlet channel, the box body is provided with an air inlet and an air outlet, the air inlet channel is arranged in the box body and connected with the wall face of the box body in a sealed mode, one end of the air inlet channel is communicated with the air inlet, and the other end of the air inlet channel is communicated with a fan. The fan is communicated with the exhaust port. The balanced water heater comprises the balanced water heater shell. The air inlet channel is in sealed connection with the wall face of the box body, so that the air inlet channel forms an independent closed space, and therefore the air inlet channel is relatively isolated from other assemblies in the box body. When the water heater is overhauled, the probability that the sealing performance of the independent air inlet channel is influenced is reduced by repeatedly disassembling and assembling the wall face of the box body, so that the effect of conveniently disassembling and assembling the shell of the water heater is achieved, and the overhauling efficiency is improved. The operation of repeatedly sticking the sealing strip is avoided, so that the stability of the sealing effect can be ensured.

Description

Technical Field

[0001] This utility model relates to a balanced water heater shell and a balanced water heater containing the same. Background Technology

[0002] Traditional balanced flue water heaters typically use sealing strips between the different walls of the tank to ensure the overall airtightness of the unit. Air enters the water heater from the outside, flows through the interior, and finally reaches the fan inlet to burn gas before being expelled through the exhaust vent. This traditional sealing method requires repeated removal and re-application of the tank walls during maintenance. This places high demands on the installation precision of production line workers, as difficulty in positioning the sealing strip and improper installation leads to a high probability of rework. Furthermore, the need to re-application of sealing strips every time the balanced flue water heater is disassembled and reassembled is not only tedious but can also compromise the sealing effect. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of the prior art, which is cumbersome to operate and has poor sealing effect due to the need to repeatedly disassemble and reassemble the balanced water heater and re-attach the sealing strip. The present invention provides a balanced water heater shell and a balanced water heater containing the shell.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This utility model provides a balanced water heater shell, which includes a housing, an air inlet and an exhaust outlet. The balanced water heater shell also includes an air inlet channel, which is located inside the housing and is sealed to the wall of the housing. One end of the air inlet channel is connected to the air inlet, and the other end is connected to a fan, which is connected to the exhaust outlet.

[0006] In this design, the sealed connection between the air intake duct and the casing wall creates an independent, enclosed space, effectively isolating the air intake duct from other components within the casing. During water heater maintenance, repeated disassembly and reassembly of the casing wall reduces the likelihood of affecting the seal of the independent air intake duct, thus facilitating easy disassembly and reassembly of the water heater casing and improving maintenance efficiency. Furthermore, by avoiding the need for repeatedly applying sealing strips, the stability of the sealing effect is ensured.

[0007] Preferably, the wall of the enclosure includes a first wall and a second wall disposed adjacent to each other, and the air inlet channel is sealed to the first wall and the second wall.

[0008] In this design, the adjacent walls of the housing are angled, and the air intake channel is sealed to the first and second walls, creating a bent structure that alters the direction of airflow. The location of the air intake vents varies depending on the water heater. This structure caters to the needs of different water heaters, improving the applicability of the balanced flue water heater casing.

[0009] Preferably, the air inlet channel includes a first connector, a second connector, and a third connector; the first connector is sealed to the first wall surface, and a first air inlet cavity is formed between the first connector and the first wall surface, the first air inlet cavity being connected to the air inlet; the second connector is simultaneously sealed to the second wall surface and the first connector, and a second air inlet cavity is formed between the second connector and the second wall surface, the second air inlet cavity being connected to the first air inlet cavity, and an air outlet is provided at one end of the second air inlet cavity away from the first air inlet cavity; the third connector is sealed to the second connector, the third connector is hollow, and the hollow area is a third air inlet cavity, one end of the third air inlet cavity being connected to the air outlet, and the other end being connected to the fan.

[0010] In this solution, the first to third connectors form an independent air intake channel, which breaks down the complex air intake channel into the connectors mentioned above for easy assembly and manufacturing. It also improves the production efficiency and maintainability of each connector.

[0011] Preferably, the second wall surface extends at least partially in a direction away from the second connector to form a cavity, and the second connector is disposed within the cavity.

[0012] In this design, the recessed cavity design can increase the distance between the second connector and the second wall, thereby increasing the space of the second air intake cavity formed by the second connector and the second wall, which is conducive to increasing the air intake volume supplied to the fan, thereby improving the combustion efficiency of the water heater.

[0013] Preferably, the width of the recess gradually decreases from the first air inlet to the air outlet; and / or, the second connector is adapted to the shape of the recess.

[0014] In this design, the concave cavity's width, wider at the top and narrower at the bottom, serves as an air confluencer, accelerating airflow in the second intake chamber and improving the efficiency of air supply to the fan and motor. Furthermore, using a second connector that matches the cavity's shape ensures a tight seal between the connector and the cavity, reducing the difficulty of sealing.

[0015] Preferably, the first connector includes a first housing and a second housing. The first housing is connected to the first wall and forms the first air intake cavity between the first housing and the first wall. One end of the second housing is connected to the first housing, and the other end is connected to the second connector. Support feet extending into the recess are provided on both sides of the second housing, and the support feet are sealed and connected to the recess, so that a fourth air intake cavity is formed between the second housing and the recess. The fourth air intake cavity communicates with the first air intake cavity and the second air intake cavity.

[0016] In this design, the fourth air intake chamber formed between the second housing and the recess connects the first and second air intake chambers. This design facilitates smooth and uniform gas flow and avoids the connection between the first and second air intake chambers being affected by the angle between the first and second walls, thus optimizing airflow distribution and path. This structure also makes more efficient use of space, resulting in a more compact layout between the first and second connectors and improving the overall space utilization efficiency.

[0017] Preferably, a flow guide channel is provided between the first air intake chamber and the fourth air intake chamber, and the bottom wall of the flow guide channel is a slope extending from the first housing to the second housing, and the extension line of the slope is not perpendicular to the second wall.

[0018] In this design, the extension line of the bottom wall of the guide channel is not perpendicular to the second wall. Therefore, the air passing through the guide channel can flow tangentially to the second wall, thereby reducing the amount of air rebounding when it flows from the first air intake chamber to the fourth air intake chamber and changing the direction of the rebound. This reduces the resistance of the air impacting the second wall head-on, allowing the air to flow quickly.

[0019] Preferably, the second housing is at least partially connected to the portion of the second wall surface where the cavity is not formed.

[0020] In this design, the portion of the second housing facing the second wall is the corner of the air intake channel. This connection between the second housing and the portion of the second wall that does not form a cavity facilitates sealing methods such as spot welding, thereby enhancing the connection and sealing strength between the second housing and the second wall.

[0021] Preferably, heat dissipation holes are provided on the housing that is away from the air intake channel.

[0022] In this solution, by setting heat dissipation holes on the housing that is far away from the air intake channel, the sealed air intake channel is not damaged, and open heat exchange is allowed between the inside of the housing and the outside, which improves the heat dissipation efficiency of components inside the housing such as the electronic control board and the burner.

[0023] A balanced flue water heater includes a balanced flue water heater housing as described above.

[0024] In this design, the sealed connection between the air intake duct and the casing wall creates an independent, enclosed space, effectively isolating the air intake duct from other components within the casing. During water heater maintenance, repeated disassembly and reassembly of the casing wall reduces the likelihood of affecting the seal of the independent air intake duct, thus facilitating easy disassembly and reassembly of the water heater casing and improving maintenance efficiency. Furthermore, by avoiding the need for repeatedly applying sealing strips, the stability of the sealing effect is ensured.

[0025] The positive and progressive effects of this utility model are as follows:

[0026] This utility model discloses a balanced-flue water heater casing and a balanced-flue water heater containing the same. The air inlet channel is sealed to the wall of the casing, creating an independent, enclosed space that isolates the air inlet channel from other components within the casing. During water heater maintenance, repeated disassembly and reassembly of the casing wall reduces the probability of affecting the seal of the independent air inlet channel, thus facilitating easy disassembly and reassembly of the water heater casing and improving maintenance efficiency. By avoiding the need for repeatedly applying sealing strips, the stability of the sealing effect is ensured. Attached Figure Description

[0027] Figure 1 This is an assembly drawing of the casing of a balanced water heater according to an embodiment of the present invention.

[0028] Figure 2 This is a schematic diagram of the structure of the housing in the balanced water heater shell according to an embodiment of the present invention.

[0029] Figure 3 This is a schematic diagram of the structure of the first connecting member in an embodiment of the present utility model.

[0030] Figure 4 This is a schematic diagram of the structure of the second connector in an embodiment of the present invention.

[0031] Figure 5 This is a schematic diagram of the structure of the third connector in an embodiment of the present utility model.

[0032] Figure 6 This is a cross-sectional view of the casing of a balanced water heater according to an embodiment of the present invention.

[0033] Figure 7 This is a perspective view of the casing of a balanced water heater according to an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached figures:

[0035] 100mm casing for balanced water heater

[0036] Box 1

[0037] Air intake 11

[0038] First wall surface 12

[0039] Second wall surface 13

[0040] Cavity 131

[0041] Transitional slope 1311

[0042] Third wall 132

[0043] Exhaust port 14

[0044] Air intake channel 2

[0045] First connector 21

[0046] First air intake chamber 211

[0047] First shell 212

[0048] Second shell 213

[0049] Support foot 2131

[0050] Fourth intake chamber 2132

[0051] Flow channel 214

[0052] Second connector 22

[0053] Second air intake chamber 221

[0054] Vent 222

[0055] Third connector 23

[0056] Third air intake chamber 231

[0057] Fan 3

[0058] 4-bend narrow edge

[0059] 5 heat dissipation holes Detailed Implementation

[0060] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0061] like Figures 1-7 As shown, this embodiment provides a balanced-flue water heater housing 100, which includes a casing 1. The casing 1 is provided with an air inlet 11 and an exhaust outlet 14. The balanced-flue water heater housing 100 also includes an air inlet channel 2, which is disposed inside the casing 1 and sealed to the wall of the casing 1. One end of the air inlet channel 2 is connected to the air inlet 11, and the other end is connected to a fan 3, which is connected to the exhaust outlet 14. The wall of the casing 1 includes a first wall surface 12 and a second wall surface 13 arranged adjacent to each other, and the air inlet channel 2 is sealed to the first wall surface 12 and the second wall surface 13.

[0062] Thus, the sealed connection between the air intake channel 2 and the wall of the housing 1 creates an independent, enclosed space for the air intake channel 2, thereby isolating it from other components within the housing 1. During water heater maintenance, repeated disassembly and reassembly of the housing 1 reduces the probability of affecting the seal of the independent air intake channel 2, thus facilitating the disassembly and reassembly of the water heater casing and improving maintenance efficiency. Since repeated application of sealing strips is avoided, the stability of the sealing effect is guaranteed. Furthermore, the angled design of the adjacent walls of the housing 1, with the air intake channel 2 sealed to the first wall 12 and the second wall 13, creates a bent structure for the air intake channel, allowing for changes in the direction of air intake. Different water heaters have different air intake locations. This structure meets the needs of different water heaters, improving the applicability of the balanced water heater casing 100. On the other hand, because the air intake channel 2 can converge air from different directions entering through the air inlet 11 into a single direction, it prevents air from passing through the front and sides of the water heater core, cutting off the propagation path on the front and sides, which helps reduce the noise impact of the fan 3 on the user.

[0063] In this embodiment, as Figure 1 and Figure 6 As shown, the air intake channel 2 includes a first connector 21, a second connector 22, and a third connector 23; the first connector 21 is sealed to the first wall surface 12, and a first air intake chamber 211 is formed between the first connector 21 and the first wall surface 12, and the first air intake chamber 211 is connected to the air inlet 11; the second connector 22 is sealed to both the second wall surface 13 and the first connector 21, and a second air intake chamber 221 is formed between the second connector 22 and the second wall surface 13, and the second air intake chamber 221 is connected to the first air intake chamber 211, with an air outlet 222 provided at the end of the second air intake chamber 221 away from the first air intake chamber 211; the third connector 23 is sealed to the second connector 22, the third connector 23 is hollow, and the hollow area is the third air intake chamber 231, with one end of the third air intake chamber 231 connected to the air outlet 222 and the other end connected to the fan 3. In this embodiment, the box 1 is a cube, and the adjacent first wall 12 and second wall 13 on the box 1 are arranged perpendicularly to each other. In other embodiments, the box 1 may also be of other shapes.

[0064] The first to third connectors 23 form an independent air intake channel 2. The complex air intake channel 2 is disassembled into the above connectors for easy assembly, which can also improve the production efficiency and maintainability of each connector.

[0065] Specifically, such as Figure 2 As shown, the second wall surface 13 extends at least partially in a direction away from the second connector 22 to form a cavity 131, and the second connector 22 is disposed within the cavity 131.

[0066] Thus, the design of the recess 131 can increase the distance between the second connector 22 and the second wall 13, thereby increasing the space of the second air intake chamber 221 formed by the second connector 22 and the second wall 13, which is conducive to increasing the air intake volume supplied to the fan 3, thereby improving the combustion efficiency of the water heater.

[0067] In this embodiment, the depth of the cavity 131 is 15-25 mm, preferably 22 mm.

[0068] Specifically, such as Figure 2 As shown, the width of the recess 131 gradually decreases from the first air inlet 211 to the air outlet; and / or, the second connector 22 is adapted to the shape of the recess 131.

[0069] Thus, the concave cavity 131, with its wider top and narrower bottom, serves as an air confluencer, which helps to accelerate the airflow in the second air intake chamber 221 and improves the efficiency of supplying air to the fan 3 and the core mechanism. Furthermore, using a second connector 22 that matches the shape of the concave cavity 131 ensures a good seal between the second connector 22 and the concave cavity 131, reducing the difficulty of sealing.

[0070] In this embodiment, the narrow end of the concave cavity 131 can be located in the middle area of ​​the second wall 13, or it can be biased to the left or right. The specific setting position of the narrow end of the concave cavity 131 can be adjusted according to the position of the fan 3. An air outlet 222 is set at the position corresponding to the narrow end of the concave cavity 131 on the second connector 22, ensuring that the center of the air outlet 222, the center of the third connector 23 and the center of the air inlet of the fan 3 are on the same axis.

[0071] Specifically, such as Figure 1 and Figure 3 As shown, the first connector 21 includes a first housing 212 and a second housing 213. The first housing 212 is connected to the first wall 12 and forms a first air intake chamber 211 between the first housing 212 and the first wall 12. One end of the second housing 213 is connected to the first housing 212, and the other end is connected to the second connector 22. The second housing 213 has support feet 2131 extending into the recess 131 on both sides, and the support feet 2131 are sealed and connected to the recess 131, so that a fourth air intake chamber 2132 is formed between the second housing 213 and the recess 131. The fourth air intake chamber 2132 communicates with the first air intake chamber 211 and the second air intake chamber 221.

[0072] Thus, the fourth air intake chamber 2132 formed between the second housing 213 and the recess 131 connects the first air intake chamber 211 and the second air intake chamber 221. This design facilitates smooth and uniform gas flow, avoids the influence of the angle between the first wall surface 12 and the second wall surface 13 on the connection between the first air intake chamber 211 and the second air intake chamber 221, and optimizes the airflow distribution and flow path. This structure makes more efficient use of space, making the layout between the first connector 21 and the second connector 22 more compact and improving the overall space utilization efficiency of the structure.

[0073] In this embodiment, a flow guide channel 214 can also be provided between the first air intake chamber 211 and the fourth air intake chamber 2132. The bottom wall of the flow guide channel 214 is a slope extending from the first housing 212 to the second housing 213, and the extension line of the slope is not perpendicular to the second wall 13. Since the extension line of the bottom wall of the flow guide channel 214 is not perpendicular to the second wall 13, the air passing through the flow guide channel 214 can flow tangentially to the second wall 13, thereby reducing the amount of rebound of the air impacting the second wall 13 when flowing from the first air intake chamber 211 to the fourth air intake chamber 2132 and changing the direction of the rebound, thereby reducing the resistance of the air impacting the second wall 13 head-on and allowing the air to flow quickly.

[0074] Specifically, such as Figure 1 As shown, the second housing 213 is at least partially connected to the portion of the second wall 13 where the cavity 131 is not formed.

[0075] Thus, the portion of the second housing 213 facing the second wall 13 is the corner of the air intake channel, which makes it easier to use sealing methods such as spot welding to connect the portion of the second housing 213 and the second wall 13 where the cavity 131 is not formed, thereby enhancing the connection strength and sealing strength between the second housing 213 and the second wall 13.

[0076] In this embodiment, the portion of the second wall surface 13 that does not form the cavity 131 is the third wall surface 132, which is located between the cavity 131 and the first wall surface 12. A bent narrow edge 4 is provided at the connection between the second housing 213 and the third wall surface 132, and a transition slope 1311 is provided between the cavity 131 and the third wall surface 132. A bent narrow edge 4 is also provided at the connection between the second housing 213 and the transition slope 1311. The bent narrow edge 4 is used to weld the second housing 213 to the third wall surface 132 and the transition slope 1311. Welding can be performed by spot welding and spraying.

[0077] Specifically, such as Figure 1 and Figure 2 As shown, heat dissipation holes 5 are provided on the casing 1, which is far away from the air intake channel 2.

[0078] Thus, by setting heat dissipation holes 5 on the housing 1, which is far away from the air inlet channel 2, the sealed air inlet channel 2 is not damaged, and the heat exchange between the inside of the housing 1 and the outside is open, which improves the heat dissipation efficiency of components such as the electronic control board and the burner inside the housing 1.

[0079] In this embodiment, since the heat dissipation holes 5 do not participate in the air intake combustion of the fan 3, but are dedicated to heat exchange, this breaks the limitations of the traditional balanced flue water heater's outer casing seal, greatly improving the heat dissipation conditions of the control board and burner, and reducing the surface temperature of the shroud. The housing 1 is equipped with heat dissipation holes 5, and this balanced flue water heater housing 100 can also be used for forced draft water heaters, reducing the investment cost of molds. Preferably, the heat dissipation holes 5 are louvered air vents; this structure can prevent dust accumulation at the vents, reducing the frequency and difficulty of cleaning.

[0080] Specifically, the third connector 23 is sealed to the fan 3 by a sealing strip.

[0081] In this way, the sealing strip is a flexible connection, which avoids the hard connection between sheet metal parts such as the third connector 23 and the fan 3, and can reduce the impact of the fan 3 vibration on the housing 1.

[0082] In this embodiment, the sealing strip can also be another soft connection method that is considered feasible by those skilled in the art.

[0083] Specifically, such as Figures 3-5 As shown, the sealing connections between the first connector 21 and the first wall surface 12, the second connector 22 and the second wall surface 13, and the third connector 23 and the second connector 22 are achieved through spot welding and spraying. A bent narrow edge 4 is provided between the first connector 21 and the second wall surface 13, between the support foot 2131 and the first cavity 131, between the second connector 22 and the cavity 131, and between the third connector 23 and the second connector 22. The bent narrow edge 4 is used for spot welding and spraying. In other embodiments, those skilled in the art can also employ other welding sealing methods.

[0084] like Figure 6 As shown, the air flow path in the shell 100 of the balanced water heater is indicated by the dotted line in the figure. The air enters from the air inlet, passes through the first air inlet chamber 211, the guide channel 214, the fourth air inlet chamber 2132, the second air inlet chamber 221 and the third air inlet chamber 231 in sequence, and then enters the fan 3. After being discharged from the fan 3, the air passes through the burner and other components and is discharged through the air outlet.

[0085] This embodiment also provides a balanced water heater, which includes the balanced water heater housing 100 as described above.

[0086] Therefore, the sealed connection between the air inlet channel 2 and the housing 1 creates an independent, enclosed space for the air inlet channel 2, thus isolating it from other components within the housing 1. During water heater maintenance, repeated disassembly and reassembly of the housing 1 will not affect the sealing of the independent air inlet channel 2, achieving convenient disassembly and reassembly of the water heater casing and improving maintenance efficiency. Since the repeated application of sealing strips is avoided, the stability of the sealing effect can be guaranteed.

[0087] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A balanced-flow water heater casing, comprising a housing, the housing having an air inlet and an exhaust outlet, characterized in that, The balanced water heater casing also includes an air inlet channel, which is located inside the housing and is sealed to the wall of the housing. One end of the air inlet channel is connected to the air inlet, and the other end is connected to a fan, which is connected to the exhaust port.

2. The balanced water heater casing as described in claim 1, characterized in that, The wall of the enclosure includes a first wall and a second wall arranged adjacent to each other, and the air inlet channel is sealed and connected to the first wall and the second wall.

3. The balanced water heater casing as described in claim 2, characterized in that, The air inlet channel includes a first connector, a second connector, and a third connector; The first connector is sealed to the first wall surface and a first air intake cavity is formed between the first connector and the first wall surface, and the first air intake cavity is connected to the air intake port; The second connector is simultaneously sealed to the second wall and the first connector. A second air intake chamber is formed between the second connector and the second wall. The second air intake chamber is connected to the first air intake chamber. An air outlet is provided at the end of the second air intake chamber away from the first air intake chamber. The third connector is sealed to the second connector. The third connector is hollow and the hollow area is a third air inlet chamber. One end of the third air inlet chamber is connected to the air outlet and the other end is connected to the fan.

4. The balanced water heater casing as described in claim 3, characterized in that, The second wall surface extends at least partially away from the second connector to form a cavity, and the second connector is disposed within the cavity.

5. The balanced water heater casing as described in claim 4, characterized in that, The width of the concave cavity gradually decreases from the first air inlet cavity to the air outlet. And / or, the second connector is adapted to the shape of the cavity.

6. The casing of a balanced-flue water heater as described in claim 4, characterized in that, The first connector includes a first housing and a second housing. The first housing is connected to the first wall and forms the first air intake cavity between the first housing and the first wall. One end of the second housing is connected to the first housing and the other end is connected to the second connector. Support feet extending into the recess are provided on both sides of the second housing, and the support feet are sealed and connected to the recess, so that a fourth air intake cavity is formed between the second housing and the recess. The fourth air intake cavity connects the first air intake cavity and the second air intake cavity.

7. The balanced water heater casing as described in claim 6, characterized in that, A flow guide channel is provided between the first air intake chamber and the fourth air intake chamber. The bottom wall of the flow guide channel is a slope extending from the first housing to the second housing, and the extension line of the slope is not perpendicular to the second wall.

8. The casing of a balanced-flue water heater as described in claim 6, characterized in that, The second housing is at least partially connected to the portion of the second wall surface where the cavity is not formed.

9. The casing of a balanced-flue water heater as described in claim 1, characterized in that, Heat dissipation holes are provided on the housing that is far from the air intake channel.

10. A balanced-flue water heater, characterized in that, It includes the housing of a balanced water heater as described in any one of claims 1-9.

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