Combustion chamber assembly and gas water heater

Abstract

The invention relates to the technical field of household appliances, and discloses a combustion chamber assembly and a gas water heater, the combustion chamber assembly comprises a combustion chamber main body, the combustion chamber main body comprises a water inlet wall and a water outlet wall which are oppositely arranged, the water inlet wall is provided with a water inlet and a water inlet cavity which are communicated in sequence, and the water outlet wall is provided with a water outlet cavity and a water outlet which are communicated in sequence; the water cooling pipes are arranged on at least one side of the combustion chamber body, the water inlet ends of the water cooling pipes are connected with the water inlet cavity, the water outlet ends of the water cooling pipes are connected with the water outlet cavity, and the water cooling pipes can exchange heat with the combustion chamber body. In the using process of the combustion chamber assembly, due to the fact that water can flow through the multiple water cooling pipes at the same time, and each water cooling pipe extends to the water outlet wall from the water inlet wall, the water path area of the water cooling pipes is increased, the water flow path of the water cooling pipes is shortened, water resistance is greatly reduced, pressure abnormity of a water path system caused by too large water resistance is avoided, and the service life of the combustion chamber assembly is prolonged. The water outlet is slow, the water quantity is insufficient, and even dry burning is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a combustion chamber component and a gas water heater. Background Art

[0002] The combustion chamber assembly of a gas water heater is one of its core components. Its main function is to provide a closed space for the safe and efficient combustion of gas, and to transfer the heat generated by the combustion to the heat exchanger flowing through it, thereby heating the cold water.

[0003] In related technologies, the combustion chamber assembly consists of a combustion chamber body and a water-cooling coil surrounding the combustion chamber body. The high-temperature flue gas generated by the burner during combustion exchanges heat with the water-cooling coil, thereby heating it. However, the long length of the water-cooling coil creates significant water resistance, which can easily cause abnormal pressure in the gas water heater's water system, leading to slow water flow, insufficient water flow, and even the risk of dry burning. Summary of the Invention

[0004] In view of this, the present invention provides a combustion chamber assembly and a gas water heater to solve the problem in the related art that the water-cooling coil of the combustion chamber assembly is long and has large water resistance, which easily causes abnormal pressure in the water system of the gas water heater, resulting in slow water output, insufficient water volume and even the risk of dry burning.

[0005] In a first aspect, the present invention provides a combustion chamber assembly comprising:

[0006] The combustion chamber body comprises a water inlet wall and a water outlet wall arranged opposite to each other, the water inlet wall is provided with a water inlet and a water inlet chamber connected in sequence, and the water outlet wall is provided with a water outlet chamber and a water outlet connected in sequence;

[0007] A plurality of water cooling pipes are arranged on at least one side of the combustion chamber body, the water inlet end of the water cooling pipe is connected to the water inlet cavity, the water outlet end of the water cooling pipe is connected to the water outlet cavity, and the water cooling pipe can exchange heat with the combustion chamber body.

[0008] Beneficial Effects: During use, cooling water enters the water inlet wall through the water inlet pipe. From there, it is distributed to multiple water-cooling pipes. After absorbing heat from the combustion chamber assembly, it flows into the water outlet wall. Finally, the absorbed heat is transferred through the water outlet to the next heat exchange device, such as the main heat exchanger. Due to the water flow, the flame heat is essentially not transferred to the periphery of the combustion chamber body, resulting in minimal heat loss.

[0009] Since multiple water-cooling pipes can flow water at the same time, each water-cooling pipe extends from the water inlet wall to the water outlet wall, thereby increasing the water channel area of the water-cooling pipe and shortening the water flow path of the water-cooling pipe, thereby greatly reducing the water resistance and avoiding problems such as abnormal water system pressure caused by excessive water resistance, slow water output, insufficient water volume, and even dry burning.

[0010] In an optional embodiment, the water inlet chamber includes a first cavity section and a second cavity section, the first cavity section is connected to the water inlet, the second cavity section is connected to the first cavity section and the water cooling pipe, and the second cavity section is arranged around the outer circumference of the first cavity section.

[0011] Beneficial effect: During the use of the combustion chamber assembly, cooling water can enter the water-cooling tube through the water inlet, the first cavity section and the second cavity section in sequence. The second cavity section is arranged around the outside of the first cavity section. Through such an arrangement, the flow area of the water flow along the flow path of the cooling water hardly changes, thereby reducing water resistance and avoiding the impact of changes in the flow state of the water flow on the water inlet chamber, which helps to enhance the ability of the water inlet chamber to withstand water pressure.

[0012] In an optional embodiment, the water inlet wall includes a first side plate and a second side plate arranged opposite to each other, the water inlet is arranged on the first side plate, the water cooling pipe is connected to the second side plate, and a first convex portion and a first groove are provided on the first side plate, the first convex portion protrudes in a direction away from the second side plate, the first groove is arranged in the middle of the first convex portion and is recessed toward the second side plate, a second groove is provided on the second side plate, the second groove is arranged at a position corresponding to the first groove, and is recessed in a direction away from the first side plate, the first cavity section is arranged between the first groove and the second groove, and the second cavity section is arranged between the first convex portion and the second side plate.

[0013] Beneficial effect: Through such an arrangement, the cooperation of the first groove, the first protrusion and the second groove can not only form the first cavity section and the second cavity section in the water inlet wall, but the curved first groove, the first protrusion and the second groove can also increase the structural strength of the first side wall and the second side wall, thereby enhancing the ability of the water inlet wall to resist water flow impact, which helps to extend the service life of the combustion chamber assembly.

[0014] In an optional embodiment, the first side panel is further provided with a first connecting edge, which is arranged around the first protrusion and is used to connect to the second side panel.

[0015] In an optional embodiment, a first connecting pipe port is provided on the second side plate, and the water cooling pipe passes through the first connecting pipe port and is connected to the second side plate.

[0016] In an optional embodiment, the water outlet chamber includes a third cavity section and a fourth cavity section, the third cavity section is connected to the water outlet, the fourth cavity section is connected to the third cavity section and the water cooling pipe, and the fourth cavity section is arranged around the outer circumference of the third cavity section.

[0017] Beneficial effects: During the use of the combustion chamber assembly, the cooling water can be output outward through the water cooling pipe, the fourth cavity section, the third cavity section and the water outlet in sequence. Along the flow path of the cooling water, the flow area of the water flow hardly changes, thereby reducing the water resistance and avoiding the impact of the flow state change of the water flow on the water inlet chamber, which helps to enhance the ability of the water inlet chamber to withstand water pressure.

[0018] In an optional embodiment, the water outlet wall includes a third side plate and a fourth side plate arranged opposite to each other, the water cooling pipe is connected to the third side plate, the fourth side plate is provided with a second protrusion and a third groove, the water outlet is provided on the fourth side plate, the second protrusion protrudes in a direction away from the third side plate, the third groove is provided in the middle of the second protrusion and is recessed in a direction close to the third side plate, the third side plate is provided with a fourth groove, the fourth groove is provided at a position corresponding to the third groove, and is recessed in a direction away from the third side plate, the third cavity section is provided between the third groove and the fourth groove, and the fourth cavity section is provided between the second protrusion and the third side plate.

[0019] Beneficial effect: Through such an arrangement, the cooperation of the third groove, the fourth groove and the second convex portion can not only form the third cavity section and the fourth cavity section in the water inlet wall, but the curved third groove, the fourth groove and the second convex portion can also increase the structural strength of the third side wall and the fourth side wall, thereby enhancing the ability of the water inlet wall to resist water flow impact, which helps to extend the service life of the combustion chamber assembly.

[0020] In an optional embodiment, a second connecting pipe port is provided on the fourth side plate, and the water cooling pipe passes through the second connecting pipe port and is connected to the fourth side plate.

[0021] Beneficial effect: Through such an arrangement, it is convenient for the operator to use welding materials to connect the water-cooling pipe and the fourth side plate into one.

[0022] In an optional embodiment, the combustion chamber body further comprises:

[0023] The connecting wall is connected between the water inlet chamber and the water outlet chamber. The connecting walls are arranged in pairs, and a combustion chamber is formed between the two connecting walls.

[0024] Beneficial effect: A combustion chamber can be enclosed between the connecting wall, the water inlet wall and the water outlet wall. The high-temperature flue gas during the combustion process of the burner can exchange heat with the water-cooling pipe in the combustion chamber, thereby heating the cooling water. On this basis, the water inlet wall, the water outlet wall and the two connecting walls of the combustion chamber assembly of the embodiment of the present application can all exchange heat with the flue gas in the combustion chamber, thereby reducing the loss of heat generated by the combustion of the gas inside and transferred to the outside.

[0025] In an optional embodiment, the water cooling pipe is arranged in the combustion chamber, an arc-shaped groove is provided on the connecting wall, and the water cooling pipe is arranged in the arc-shaped groove.

[0026] Beneficial effect: Through such an arrangement, the inward side of the water-cooling pipe can directly exchange heat with the high-temperature flue gas, and the outward side of the water-cooling pipe can make surface contact with the groove wall of the arc-shaped groove, which can increase the heat exchange area between the water-cooling pipe and the connecting wall, and help improve the heat exchange efficiency between the two.

[0027] In an optional embodiment, the arc length of the arc-shaped groove is less than or equal to half the circumference of the water-cooling pipe.

[0028] Beneficial effect: Through such an arrangement, the water-cooling pipe can be easily placed into the arc-shaped groove.

[0029] In an optional embodiment, the connecting wall is provided with a pipe channel, the pipe channel extends along the distance direction between the water inlet wall and the water outlet wall, and the water cooling pipe is passed through the pipe channel.

[0030] Beneficial effect: Through such an arrangement, the connecting wall can completely wrap the entire water-cooling pipe, so that the surface of the entire water-cooling pipe is in contact with the connecting wall, thereby increasing the heat exchange area between the two.

[0031] In an optional embodiment, the combustion chamber body and / or the water cooling tube are made of stainless steel.

[0032] Beneficial effects:

[0033] The combustion chamber body and copper water pipe of the gas water heater of the embodiment of the present invention are made of stainless steel. The corrosion resistance of stainless steel can effectively reduce the risk of water pipe leakage. In addition, the use of stainless steel to make water pipes and combustion chamber bodies has the defect of being difficult to shape. The water cooling pipe of the embodiment of the present application uses multiple straight pipes arranged in parallel instead of a single coil arranged around the outside of the combustion chamber body. The combustion chamber body is connected by a water inlet wall, a water outlet wall and a connecting wall. No bending is required during the assembly process, avoiding the rebound and forming resistance of stainless steel during processing. Therefore, the defect of difficulty in shaping caused by making the combustion chamber body and water pipe of stainless steel is overcome.

[0034] In addition, in the related art, when the burner body and the water-cooling pipe are made of stainless steel, the stainless steel water-cooling coil is wrapped around the combustion chamber body four to five times. Since the yield strength and elastic modulus of stainless steel itself are relatively high, the stainless steel water-cooling pipe is prone to rebound after bending. It is necessary to achieve zero dimensional fit between the combustion chamber body and the water-cooling pipe to ensure that the water-cooling pipe is in contact with the combustion chamber body.

[0035] An arc-shaped groove is provided on the connecting wall of the burner body of the embodiment of the present application, and the water-cooling pipe is arranged in the arc-shaped groove, thereby effectively increasing the contact area between the water-cooling pipe and the connecting wall.

[0036] In an optional embodiment, the combustion chamber assembly further includes heat dissipation fins provided on the combustion chamber body, and the heat dissipation fins are copper fins.

[0037] Beneficial effect: Since the heat transfer coefficient of copper fins is better than that of stainless steel fins, the heat transfer effect of the fins can be guaranteed without the volume of the fins being set larger. This application uses a combustion chamber body and water-cooling tube made of stainless steel in combination with copper fins, which can ensure the heat transfer effect of the combustion chamber assembly while reducing the risk of water leakage of the combustion chamber assembly.

[0038] In a second aspect, the present invention further provides a gas water heater, comprising:

[0039] The combustion chamber assembly of the first aspect of the present invention;

[0040] The burner is arranged below the combustion chamber assembly.

[0041] Beneficial Effects: During use, cooling water from a gas water heater according to an embodiment of the present invention enters the water inlet wall through the water inlet pipe. The water is then distributed to multiple water-cooling pipes. After absorbing heat from the combustion chamber components, it flows into the water outlet wall. Finally, the absorbed heat is transferred to the next heat exchange device, such as the main heat exchanger, through the water outlet. Due to the water flow, the flame heat is essentially not transferred to the periphery of the combustion chamber, resulting in minimal heat loss.

[0042] Since multiple water-cooling pipes can flow water at the same time, each water-cooling pipe extends from the water inlet wall to the water outlet wall, thereby increasing the water channel area of the water-cooling pipe and shortening the water flow path of the water-cooling pipe, thereby greatly reducing the water resistance and avoiding problems such as abnormal water system pressure caused by excessive water resistance, slow water output, insufficient water volume, and even dry burning. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0044] Figure 1 is a perspective view of a burner assembly according to an embodiment of the present invention;

[0045] Figure 2 for Figure 1 A cross-sectional view of the burner assembly is shown at an angle;

[0046] Figure 3 A connecting wall and a water-cooling pipe of a burner assembly according to an embodiment of the present invention;

[0047] Figure 4 This is a front view of a connecting wall and a water-cooling pipe of a burner assembly according to an embodiment of the present invention;

[0048] Figure 5 A side view of a connecting wall and a water-cooling tube of a burner assembly according to an embodiment of the present invention;

[0049] Figure 6 An exploded view of a burner assembly according to an embodiment of the present invention;

[0050] Figure 7 A cross-sectional view of a burner assembly according to an embodiment of the present invention at another angle;

[0051] Figure 8 A partial cross-sectional view of a burner assembly according to an embodiment of the present invention;

[0052] Figure 9 This is a burner assembly according to an embodiment of the present invention, wherein the first side panel is hidden to facilitate display of the structure of the second side panel.

[0053] Figure 10 is a schematic diagram of a burner assembly according to an embodiment of the present invention;

[0054] Figure 11 is a schematic diagram of a burner assembly according to an embodiment of the present invention from another angle;

[0055] Figure 12 This is a partial cross-sectional view of a burner assembly according to an embodiment of the present invention. The arrow in the figure indicates the direction of water flow in the water inlet wall.

[0056] Figure 13 This is a side cross-sectional view of a burner assembly according to an embodiment of the present invention. The arrow in the figure indicates the flow direction of cooling water in the burner assembly.

[0057] Figure 14 A side view of another connecting wall of a burner assembly according to an embodiment of the present invention;

[0058] Figure 15 for Figure 14 A perspective view of a connecting wall of a burner assembly is shown;

[0059] Figure 16 A side view of a burner assembly according to an embodiment of the present invention;

[0060] Figure 17 A bottom view of a burner assembly according to an embodiment of the present invention;

[0061] Figure 18 This is a front view of a burner assembly according to an embodiment of the present invention.

[0062] Description of reference numerals:

[0063] 1. Combustion chamber body;

[0064] 101, water inlet wall; 1011, water inlet; 1012, water inlet chamber; 10121, first chamber section; 10122, second chamber section;

[0065] 1013, first side plate; 10131, first protrusion; 10132, first groove; 10133, first connecting edge;

[0066] 1014, second side plate; 10141, second groove; 10142, first pipe port;

[0067] 102, water outlet wall; 1021, water outlet; 1022, water outlet chamber; 10221, third cavity section; 10222, fourth cavity section;

[0068] 1023, third side plate; 10231, second convex portion; 10232, third groove; 10233, second connecting edge;

[0069] 1024, fourth side plate; 10241, fourth groove; 10242, second pipe connection port;

[0070] 2. Water cooling pipe;

[0071] 103, connecting wall; 1031, arc-shaped groove; 10311, pipe channel;

[0072] 3. Connector. DETAILED DESCRIPTION

[0073] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0074] The following combination Figures 1 to 18 , describing embodiments of the present invention.

[0075] According to an embodiment of the present invention, on the one hand, a combustion chamber assembly is provided, including a combustion chamber body 1 and a plurality of water-cooling tubes 2 .

[0076] Among them, such as Figure 1 and Figure 7As shown, the combustion chamber body 1 includes an inlet wall 101 and a water outlet wall 102 arranged opposite to each other. The inlet wall 101 is provided with a water inlet 1011 and a water inlet chamber 1012 connected in sequence, and the outlet wall 102 is provided with a water outlet chamber 1022 and a water outlet 1021 connected in sequence.

[0077] Multiple water cooling pipes 2 are arranged on at least one side of the combustion chamber body 1. The water inlet end of the water cooling pipe 2 is connected to the water inlet chamber 1012, and the water outlet end of the water cooling pipe 2 is connected to the water outlet chamber 1022. The water cooling pipe 2 can exchange heat with the combustion chamber body 1.

[0078] During use, cooling water enters the combustion chamber assembly through the water inlet pipe and enters the water inlet wall 101. Water is then distributed to the multiple water-cooling tubes 2 by the water inlet wall 101. After absorbing heat from the combustion chamber assembly, it flows into the water outlet wall 102. Finally, the heat absorbed by the water is transferred to the next heat exchange device, such as the main heat exchanger, through the water outlet. Due to the water flow, the heat from the flame is essentially not transferred to the periphery of the combustion chamber body, resulting in minimal heat loss.

[0079] Since multiple water-cooling pipes 2 can pass water at the same time, each water-cooling pipe 2 extends from the water inlet wall 101 to the water outlet wall 102, thereby increasing the water channel area of the water-cooling pipe 2 and shortening the water flow path of the water-cooling pipe 2, thereby greatly reducing the water resistance and avoiding problems such as abnormal water system pressure, slow water outlet, insufficient water volume and even dry burning caused by excessive water resistance.

[0080] In one embodiment, Figure 7 As shown, the water inlet chamber 1012 includes a first cavity section 10121 and a second cavity section 10122. The first cavity section 10121 is connected to the water inlet 1011, and the second cavity section 10122 is connected to the first cavity section 10121 and the water cooling pipe 2. The second cavity section 10122 is arranged around the outer periphery of the first cavity section 10121.

[0081] During the use of the combustion chamber assembly, cooling water can enter the water-cooling tube 2 through the water inlet 1011, the first cavity section 10121 and the second cavity section 10122 in sequence. The second cavity section 10122 is arranged around the first cavity section 10121. Through such an arrangement, the flow area of the water flow along the flow path of the cooling water hardly changes, thereby reducing the water resistance and avoiding the impact of the flow state change of the water flow on the water inlet chamber 1012, which helps to enhance the ability of the water inlet chamber 1012 to withstand water pressure.

[0082] As a convertible embodiment, in an embodiment not shown in the accompanying drawings, the water inlet chamber 1012 includes a main water inlet path and multiple water inlet branches connected in sequence, the main water inlet path is connected to the water inlet 1011, and the multiple water inlet branches are connected in parallel to each other and connected between the main water inlet path and the water cooling pipe 2.

[0083] In one embodiment, Figure 6 、 Figure 7 and Figure 8 As shown, the water inlet wall 101 includes a first side plate 1013 and a second side plate 1014 arranged opposite to each other, the water inlet 1011 is provided on the first side plate 1013, the water cooling pipe 2 is connected to the second side plate 1014, and the first side plate 1013 is provided with a first convex portion 10131 and a first groove 10132. The first convex portion 10131 protrudes in a direction away from the second side plate 1014, and the first groove 10132 is provided in the middle of the first convex portion 10131 and is recessed in a direction close to the second side plate 1014. The second side plate 1014 is provided with a second groove 10141. The second groove 10141 is provided at a position corresponding to the first groove 10132 and is recessed in a direction away from the first side plate 1013. The first cavity section 10121 is provided between the first groove 10132 and the second groove 10141, and the second cavity section 10122 is provided between the first convex portion 10131 and the second side plate 1014.

[0084] Through such a configuration, the cooperation of the first groove 10132, the first protrusion 10131 and the second groove 10141 can not only form the first cavity section 10121 and the second cavity section 10122 in the water inlet wall 101, but the curved first groove 10132, the first protrusion 10131 and the second groove 10141 can also increase the structural strength of the first side wall and the second side wall, thereby enhancing the ability of the water inlet wall 101 to resist water flow impact, which helps to extend the service life of the combustion chamber assembly.

[0085] In one embodiment, Figure 8 As shown, the first side panel 1013 is further provided with a first connecting edge 10133 , and the first connecting edge 10133 is provided around the first protrusion for connecting to the second side panel 1014 .

[0086] In one embodiment, the first connecting edge 10133 is welded to the second side plate 1014 .

[0087] By such a configuration, not only can the first side plate 1013 be connected to the second side plate 1014 , but the sealing performance of the water inlet chamber 1012 can also be improved.

[0088] As a convertible implementation, in an embodiment not shown in the drawings, the first side plate 1013 and the second side plate 1014 may also be optionally connected by bonding or bolts.

[0089] In one embodiment, Figure 7As shown, the water outlet chamber 1022 includes a third cavity section 10221 and a fourth cavity section 10222. The third cavity section 10221 is connected to the water outlet, and the fourth cavity section 10222 is connected to the third cavity section 10221 and the water cooling pipe 2. The fourth cavity section 10222 is arranged around the outer periphery of the third cavity section 10221.

[0090] During the use of the combustion chamber assembly, the cooling water can be output outward through the water-cooling pipe 2, the fourth cavity section 10222, the third cavity section 10221 and the water outlet 1021 in sequence. Along the flow path of the cooling water, the flow area of the water flow hardly changes, thereby reducing the water resistance and avoiding the impact of the flow state change of the water flow on the water inlet chamber 1012, which helps to enhance the ability of the water inlet chamber 1012 to withstand water pressure.

[0091] As a convertible embodiment, in an embodiment not shown in the accompanying drawings, the water outlet chamber 1022 includes a water outlet branch and a water outlet main road connected in sequence, and multiple water outlet branches are connected in parallel to each other and connected between the water outlet main road and the water cooling pipe 2, and the water outlet main road is connected to the water outlet 1021.

[0092] In one embodiment, a first connecting port 10142 is provided on the second side plate 1014 , and the water cooling pipe 2 passes through the first connecting port 10142 and is connected to the second side plate 1014 .

[0093] In one embodiment, the water-cooling pipe 2 partially passes through the plate surface of the second side plate 1014 , which makes it easy for the operator to use welding materials to weld the water-cooling pipe 2 and the second side plate 1014 together.

[0094] In a preferred embodiment, the length of the end portion of the water-cooling tube 2 protruding from the plate surface of the second side plate 1014 is L, and 2mm≤L≤5mm.

[0095] In one embodiment, Figure 7 and Figure 11 As shown, the water outlet wall 102 includes a third side plate 1023 and a fourth side plate 1024 arranged opposite to each other, the water-cooling pipe 2 is connected to the third side plate 1023, and the fourth side plate 1024 is provided with a second convex portion 10231 and a third groove 10232. The water outlet 1021 is provided on the fourth side plate 1024, the second convex portion 10231 protrudes in a direction away from the third side plate 1023, and the third groove 10232 is provided in the middle of the second convex portion 10231 and is recessed in a direction close to the third side plate 1023. A fourth groove 10241 is provided on the third side plate 1023, and the fourth groove 10241 is provided at a position corresponding to the third groove 10232 and is recessed in a direction away from the third side plate 1023. The third cavity section 10221 is provided between the third groove 10232 and the fourth groove 10241, and the fourth cavity section 10222 is provided between the second convex portion 10231 and the third side plate 1023.

[0096] Through such a configuration, the cooperation of the third groove 10232, the fourth groove 10241 and the second protrusion 10231 can not only form the third cavity section 10221 and the fourth cavity section 10222 in the water inlet wall 101, but the curved third groove 10232, the fourth groove 10241 and the second protrusion 10231 can also increase the structural strength of the third side wall and the fourth side wall, thereby enhancing the ability of the water inlet wall 101 to resist water flow impact, which helps to extend the service life of the combustion chamber assembly.

[0097] In one embodiment, a second connecting port 10242 is provided on the fourth side plate 1024 , and the water-cooling pipe 2 passes through the second connecting port 10242 and is connected to the fourth side plate 1024 .

[0098] This configuration makes it easier for an operator to use welding materials to connect the water-cooling pipe 2 and the fourth side plate 1024 together.

[0099] In a preferred embodiment, Figure 4 As shown, the length of the end portion of the water-cooling pipe 2 protruding from the plate surface of the fourth side plate 1024 is L, 2mm≤L≤5mm.

[0100] In one embodiment, the water inlet wall and the water outlet wall have the same structure. By setting it in this way, only one set of molds is needed to complete the processing of the water inlet wall and the water outlet wall, which can reduce the manufacturing cost of the combustion chamber assembly.

[0101] In one embodiment, Figure 3 As shown, the combustion chamber body 1 further includes a connecting wall 103 .

[0102] The connecting wall 103 is connected between the water inlet chamber 1012 and the water outlet chamber 1022 . The connecting walls 103 are arranged in pairs, and a combustion chamber is formed between the two connecting walls 103 .

[0103] A combustion chamber can be formed between the connecting wall 103, the water inlet wall 101 and the water outlet wall 102. The high-temperature flue gas generated during the combustion of the burner can exchange heat with the water-cooling pipe 2 in the combustion chamber, thereby heating the cooling water. On this basis, the water inlet wall 101, the water outlet wall 102 and the two connecting walls 103 of the combustion chamber assembly of the embodiment of the present application can all exchange heat with the flue gas in the combustion chamber, thereby reducing the loss of heat generated by the combustion of the gas inside and transferred to the outside.

[0104] In one embodiment, the water-cooling pipe 2 is disposed in the combustion chamber, and an arc-shaped groove 1031 is provided on the connecting wall 103 , and the water-cooling pipe 2 is disposed in the arc-shaped groove.

[0105] Through such an arrangement, the inward side of the water-cooling tube 2 can directly exchange heat with the high-temperature flue gas, and the outward side of the water-cooling tube 2 can make surface contact with the groove wall of the arc-shaped groove, which can increase the heat exchange area between the water-cooling tube 2 and the connecting wall 103, and help improve the heat exchange efficiency between the two.

[0106] In one embodiment, Figure 5 As shown, the arc length of the arc-shaped groove is less than or equal to half of the circumference of the water-cooling pipe 2.

[0107] This arrangement facilitates the placement of the water-cooling pipe 2 into the arc-shaped groove 1031 .

[0108] In a preferred embodiment, the arc length of the arc-shaped groove is set to be equal to half the circumference of the water-cooling pipe 2, which can maximize the contact area between the connecting wall 103 and the water-cooling pipe 2.

[0109] In one embodiment, Figure 14 and Figure 15 As shown, the connecting wall 103 is provided with a pipe channel 10311 , which extends along the distance direction between the water inlet wall 101 and the water outlet wall 102 , and the water cooling pipe 2 is passed through the pipe channel 10311 .

[0110] By such arrangement, the connecting wall 103 can completely wrap the entire water-cooling tube 2 , so that the entire surface of the water-cooling tube 2 is in contact with the connecting wall 103 , thereby increasing the heat exchange area between the two.

[0111] In one embodiment, during the processing of the connecting wall 103 , the water-cooling pipe 2 is embedded into a casting mold of the connecting wall 103 and cast into one piece.

[0112] In one embodiment, the combustion chamber body 1 and / or the water cooling tube 2 are made of stainless steel.

[0113] In the related art, the combustion chamber body 1 of the gas water heater is generally made of copper, and copper water pipes have the risk of corrosion and leakage.

[0114] The combustion chamber body 1 and the copper water pipe of the gas water heater of the embodiment of the present invention are made of stainless steel. The corrosion resistance of stainless steel itself can effectively reduce the risk of water pipe leakage. In addition, the use of stainless steel to make the water pipe and the combustion chamber body 1 has the defect of being difficult to shape. The water-cooling pipe 2 of the embodiment of the present application uses multiple straight pipes arranged in parallel to replace the single coil arranged around the outside of the combustion chamber body 1. The combustion chamber body 1 is connected by the water inlet wall 101, the water outlet wall 102 and the connecting wall 103. There is no need to bend during the assembly process, which avoids the rebound and forming resistance of stainless steel during the processing process, thereby overcoming the defect of being difficult to shape caused by the combustion chamber body 1 and the water pipe being made of stainless steel.

[0115] In addition, in the related art, when the burner body and the water-cooling pipe are made of stainless steel, the stainless steel water-cooling coil is wrapped around the combustion chamber body four to five times. Since the yield strength and elastic modulus of stainless steel itself are relatively high, the stainless steel water-cooling pipe is prone to rebound after bending. It is necessary to achieve zero dimensional fit between the combustion chamber body and the water-cooling pipe to ensure that the water-cooling pipe is in contact with the combustion chamber body.

[0116] An arc-shaped groove is provided on the connecting wall of the burner body of the embodiment of the present application, and the water-cooling pipe is arranged in the arc-shaped groove, thereby effectively increasing the contact area between the water-cooling pipe and the connecting wall.

[0117] In one embodiment, the combustion chamber assembly further includes heat dissipation fins provided on the combustion chamber body 1, and the heat dissipation fins are copper fins.

[0118] Since the heat transfer coefficient of copper fins is better than that of stainless steel fins, the heat transfer effect of the fins can be guaranteed without the volume of the fins being set larger. In this application, the combustion chamber body 1 and water-cooling tube 2 made of stainless steel are used in combination with copper fins, which can ensure the heat transfer effect of the combustion chamber assembly while reducing the risk of water leakage of the combustion chamber assembly.

[0119] As an alternative embodiment, the heat dissipation fins are stainless steel fins.

[0120] According to another aspect of an embodiment of the present invention, a gas water heater is provided, comprising a combustion chamber assembly and a burner.

[0121] The combustion chamber assembly is the combustion chamber assembly of the first aspect of the present invention. The burner is arranged below the combustion chamber assembly. The burner is arranged below the combustion chamber assembly.

[0122] The gas water heater of the second aspect of the present invention includes or utilizes the combustion chamber assembly of the first aspect of the present invention, thereby achieving its beneficial effects. Specifically, during use of the gas water heater of this embodiment of the present invention, cooling water can enter the water inlet wall 101 through the water inlet pipe, be distributed by the water inlet wall 101 to the multiple water-cooling tubes 2, and then, after absorbing heat from the combustion chamber assembly, flow into the water outlet wall 102. Finally, the heat absorbed by the water is transferred to the next heat exchange device, such as the main heat exchanger, through the water outlet. Under the action of the water flow, the heat of the flame is essentially not transferred to the periphery of the combustion chamber body, resulting in minimal heat loss.

[0123] Since multiple water-cooling pipes 2 can pass water at the same time, each water-cooling pipe 2 extends from the water inlet wall 101 to the water outlet wall 102, thereby increasing the water channel area of the water-cooling pipe 2 and shortening the water flow path of the water-cooling pipe 2, thereby greatly reducing the water resistance and avoiding problems such as abnormal water system pressure, slow water outlet, insufficient water volume and even dry burning caused by excessive water resistance.

[0124] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope of protection claimed by the present invention.

Claims

1. A combustion chamber assembly, characterized in that: include: The combustion chamber body (1) comprises a water inlet wall (101) and a water outlet wall (102) arranged opposite to each other, wherein the water inlet wall (101) is provided with a water inlet (1011) and a water inlet chamber (1012) which are connected in sequence, and the water outlet wall (102) is provided with a water outlet chamber (1022) and a water outlet (1021) which are connected in sequence; A plurality of water cooling pipes (2) are provided at at least one side of the combustion chamber body (1); the water inlet end of the water cooling pipe (2) is connected to the water inlet chamber (1012); the water outlet end of the water cooling pipe (2) is connected to the water outlet chamber (1022); and the water cooling pipe (2) is capable of exchanging heat with the combustion chamber body (1).

2. The combustion chamber assembly according to claim 1, characterized in that The water inlet chamber (1012) comprises a first cavity section (10121) and a second cavity section (10122), wherein the first cavity section (10121) is connected to the water inlet (1011), the second cavity section (10122) is connected to the first cavity section (10121) and the water-cooling pipe (2), and the second cavity section (10122) is arranged around the outer periphery of the first cavity section (10121).

3. The combustion chamber assembly according to claim 2, characterized in that The water inlet wall (101) comprises a first side plate (1013) and a second side plate (1014) arranged opposite to each other, the water inlet (1011) is arranged on the first side plate (1013), the water cooling pipe (2) is connected to the second side plate (1014), and the first side plate (1013) is provided with a first convex portion (10131) and a first groove (10132), the first convex portion (10131) protrudes in a direction away from the second side plate (1014), and the first groove (10132) is provided on the first convex portion (10131). ) in the middle and recessed toward the second side plate (1014); a second groove (10141) is provided on the second side plate (1014); the second groove (10141) is provided at a position corresponding to the first groove (10132) and recessed in a direction away from the first side plate (1013); the first cavity section (10121) is provided between the first groove (10132) and the second groove (10141); and the second cavity section (10122) is provided between the first convex portion (10131) and the second side plate (1014).

4. The combustion chamber assembly according to claim 3, characterized in that The first side panel (1013) is further provided with a first connecting edge (10133), and the first connecting edge (10133) is arranged around the first protrusion and is used for connecting to the second side panel (1014).

5. The combustion chamber assembly according to claim 3, characterized in that A first connecting pipe opening (10142) is provided on the second side plate (1014), and the water cooling pipe (2) passes through the first connecting pipe opening (10142) and is connected to the second side plate (1014).

6. The combustion chamber assembly according to any one of claims 1 to 5, characterized in that The water outlet chamber (1022) comprises a third cavity section (10221) and a fourth cavity section (10222), wherein the third cavity section (10221) is connected to the water outlet, and the fourth cavity section (10222) is connected to the third cavity section (10221) and the water-cooling pipe (2), and the fourth cavity section (10222) is arranged around the outer periphery of the third cavity section (10221).

7. The combustion chamber assembly according to claim 6, characterized in that The water outlet wall (102) comprises a third side plate (1023) and a fourth side plate (1024) arranged opposite to each other, the water cooling pipe (2) is connected to the third side plate (1023), the fourth side plate (1024) is provided with a second convex portion (10231) and a third groove (10232), the water outlet (1021) is provided on the fourth side plate (1024), the second convex portion (10231) protrudes in a direction away from the third side plate (1023), and the third groove (10232) is provided in the middle of the second convex portion (10231). The third side plate (1023) is recessed in a direction approaching the third side plate (1023); a fourth groove (10241) is provided on the third side plate (1023); the fourth groove (10241) is provided at a position corresponding to the third groove (10232) and is recessed in a direction away from the third side plate (1023); the third cavity section (10221) is provided between the third groove (10232) and the fourth groove (10241); and the fourth cavity section (10222) is provided between the second convex portion (10231) and the third side plate (1023).

8. The combustion chamber assembly according to claim 7, characterized in that A second connecting pipe opening (10242) is provided on the fourth side plate (1024), and the water cooling pipe (2) passes through the second connecting pipe opening (10242) and is connected to the fourth side plate (1024).

9. The combustion chamber assembly according to any one of claims 1 to 5, characterized in that The combustion chamber body (1) further comprises: The connecting wall (103) is connected between the water inlet chamber (1012) and the water outlet chamber (1022). The connecting walls (103) are arranged in pairs, and a combustion chamber is formed between the two connecting walls (103).

10. The combustion chamber assembly according to claim 9, characterized in that The water-cooling pipe (2) is arranged in the combustion chamber, an arc-shaped groove (1031) is provided on the connecting wall (103), and the water-cooling pipe (2) is arranged in the arc-shaped groove.

11. The combustion chamber assembly according to claim 10, characterized in that The arc length of the arc-shaped groove is less than or equal to half the circumference of the water-cooling pipe (2).

12. The combustion chamber assembly according to claim 9, wherein: The connecting wall (103) is provided with a pipe channel (10311), the pipe channel (10311) extending along the distance direction between the water inlet wall (101) and the water outlet wall (102), and the water cooling pipe (2) is arranged in the pipe channel (10311).

13. The combustion chamber assembly according to any one of claims 1 to 5, characterized in that The combustion chamber body (1) and / or the water cooling pipe (2) are made of stainless steel.

14. The combustion chamber assembly according to any one of claims 1 to 5, characterized in that It also includes heat dissipation fins, which are arranged on the combustion chamber body (1), and the heat dissipation fins are copper fins.

15. A gas water heater, characterized in that: include: A combustion chamber assembly according to any one of claims 1 to 14; The burner is arranged below the combustion chamber assembly.

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