Gas water heater

Abstract

The present disclosure provides a gas water heater, which relates to the technical field of household appliances, and is used for reducing the noise of the gas water heater and improving the use experience of the gas water heater. The gas water heater comprises a shell, a fan assembly and a noise reduction component. The bottom of the shell is provided with a through hole. The fan assembly is located in the shell, and the fan assembly has an air inlet. The noise reduction component is located in the shell. Wherein, the fan assembly comprises a fan shell and an impeller located in the fan shell, the fan shell forms the air inlet of the fan assembly, the middle part of the impeller forms an air inlet cavity, and the air inlet cavity is communicated with the air inlet. The noise reduction component is fixed outside the fan shell, the noise reduction component comprises a shunt column, the shunt column passes through the air inlet along the axial direction of the air inlet cavity and extends into the air inlet cavity, and an annular gap is formed between the outer circumferential surface of the shunt column and the inner circumferential surface of the air inlet. The above-mentioned gas water heater is used for heating water.

Description

TECHNICAL FIELD

[0001] The embodiment of the present disclosure relates to the technical field of household appliances, in particular to a gas water heater. BACKGROUND

[0002] At present, the gas water heater is a household appliance commonly used in people's daily life. The gas water heater is widely used due to its characteristics of hot water without waiting and large power. The gas water heater is usually configured with a heat exchanger, a burner and a fan assembly. The fan assembly sucks the air outside and delivers it to the burner to ignite the mixed gas through the burner and heat the heat exchanger, and the water flowing through the heat exchanger is heated and output.

[0003] The gas water heater in the prior art requires a high air volume of the fan assembly due to the use of the intensified combustion technology. In order to improve the air volume of the fan assembly, a fan assembly with a large air volume is needed to be configured. However, due to the design of small overall size, the fan assembly cannot use a large size fan assembly. Therefore, the rotational speed of the fan assembly is usually increased to increase the air volume. However, with the increase of the rotational speed of the fan assembly, a large noise is generated at the air inlet side of the fan assembly, thereby affecting the user experience. SUMMARY

[0004] The purpose of the embodiment of the present disclosure is to provide a gas water heater for reducing the noise of the gas water heater and improving the use experience of the gas water heater.

[0005] In order to achieve the above purpose, the embodiment of the present disclosure provides the following technical scheme:

[0006] The embodiment of the present disclosure provides a gas water heater. The gas water heater comprises a shell, a fan assembly and a noise reduction component. The bottom of the shell is provided with a through hole. The fan assembly is located in the shell, and the fan assembly has an air inlet. The noise reduction component is located in the shell. The fan assembly comprises a fan shell and an impeller located in the fan shell. The fan shell forms the air inlet of the fan assembly. The middle part of the impeller forms an air inlet cavity, and the air inlet cavity is in communication with the air inlet. The noise reduction component is fixed to the outer side of the fan shell. The noise reduction component comprises a flow dividing column. The flow dividing column passes through the air inlet along the axial direction of the air inlet cavity and extends into the air inlet cavity. An annular gap is formed between the outer circumferential surface of the flow dividing column and the inner circumferential surface of the air inlet cavity.

[0007] The gas water heater provided by the embodiments of the present disclosure can avoid the generation of turbulence at the air inlet and reduce the noise at the air inlet, and improve the use experience of the gas water heater.

[0008] In some embodiments, the outer peripheral contour of the cross section of the air inlet cavity is circular, and the maximum radius of the outer peripheral contour of the cross section of the air inlet cavity is R. The air inlet cavity has a first center line, the shunt column has a second center line, the first center line and the second center line are parallel to each other or coincide with each other, and the minimum distance between the first center line and the second center line is L, 0

[0009] In some embodiments, the outer peripheral contour of the cross section of the air inlet cavity is circular, and the maximum radius of the outer peripheral contour of the cross section of the air inlet cavity is R. The outer peripheral contour of the cross section of the shunt column is circular, and the maximum radius of the outer peripheral contour of the cross section of the shunt column is R1. Wherein, R1 and R satisfy: 0.1R≤R1≤0.4R.

[0010] In some embodiments, the fan assembly further includes a driving component located on the side of the fan shell away from the air inlet. The driving component includes a driving shaft, part of the driving shaft extends into the fan shell, the part of the driving shaft extending into the fan shell is fixedly connected with the impeller, and the driving shaft is used to drive the impeller to rotate around the axial direction of the driving shaft. In the axial direction of the air inlet cavity, the size of the air inlet cavity is D1, and the minimum distance between the shunt column and the driving shaft is D2, D2≤0.1D1.

[0011] In some embodiments, the noise reduction component further comprises a top plate outside the fan housing, the top plate being fixed to the fan housing, the shunt column being fixed to the fan housing through the top plate, and the top plate being arranged opposite to the air inlet of the fan assembly.

[0012] In some embodiments, the top plate is provided with sound-absorbing material.

[0013] In some embodiments, the distance between the top plate and the air inlet is H, the circumference of the air inlet is C, and the area of the air inlet is M, wherein H, C, and M satisfy HxC≥M.

[0014] In some embodiments, the noise reduction component further comprises a mounting bracket, one end of the mounting bracket being fixedly connected to the fan housing, and the other end of the mounting bracket being fixedly connected to the top plate.

[0015] In some embodiments, in the direction facing the air inlet, the orthographic projection of the air inlet is within the orthographic projection range of the top plate.

[0016] In some embodiments, the gas water heater further comprises a combustion system and a water system. The combustion system is fixed in the shell and located above the fan assembly; the combustion system comprises a combustion chamber, a burner arranged in the combustion chamber, and an exhaust passage communicating with the top of the combustion chamber. The water system is fixed in the shell, and part of the water system is located in the combustion chamber; the burner is used to heat the part of the water system located in the combustion chamber. The fan housing further forms an air outlet of the fan assembly, and the air outlet communicates with the bottom of the combustion chamber. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present disclosure, the following will briefly introduce the drawings needed to be used in some embodiments of the present disclosure. Obviously, the drawings in the following description are only the drawings of some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art according to these drawings. In addition, the drawings in the following description can be regarded as schematic diagrams, and are not limited to the actual size of the products involved in the embodiments of the present disclosure.

[0018] Figure 1A a structural diagram of a gas water heater according to some embodiments of the present disclosure;

[0019] Figure 1B a structural diagram of another gas water heater according to some embodiments of the present disclosure;

[0020] Figure 2 a structural diagram of still another gas water heater according to some embodiments of the present disclosure;

[0021] Figure 3A A structural diagram of a gas water heater according to some embodiments of the present disclosure;

[0022] Figure 3B A structural diagram of a gas water heater according to some embodiments of the present disclosure;

[0023] Figure 3C A structural diagram of a gas water heater according to some embodiments of the present disclosure;

[0024] Figure 3D A structural diagram of a gas water heater according to some embodiments of the present disclosure;

[0025] Figure 4 A structural diagram of a fan assembly according to some embodiments of the present disclosure;

[0026] Figure 5 A front view of a fan assembly according to some embodiments of the present disclosure;

[0027] Figure 6 A Figure 5 sectional view along AA direction;

[0028] Figure 7 A structural diagram of an impeller according to some embodiments of the present disclosure;

[0029] Figure 8 A structural diagram of a combustion system according to some embodiments of the present disclosure;

[0030] Figure 9 A structural diagram of a waterway system according to some embodiments of the present disclosure;

[0031] Figure 10 A structural diagram of a fan assembly and a noise reduction component according to some embodiments of the present disclosure;

[0032] Figure 11 A Figure 10 sectional view along BB direction;

[0033] Figure 12A A Figure 11 sectional view along CC direction;

[0034] Figure 12B A Figure 11 another sectional view along CC direction;

[0035] Figure 12C A Figure 11 still another sectional view along CC direction;

[0036] Figure 13 for Figure 10 Another sectional view along the BB direction;

[0037] Figure 14 for Figure 10 Another sectional view along the BB direction;

[0038] Figure 15 for Figure 10 Another sectional view along the BB direction;

[0039] Figure 16 This is a structural diagram of a noise reduction component provided according to some embodiments of the present disclosure;

[0040] Figure 17 This is a cross-sectional view of a fan assembly and a noise reduction component provided according to some embodiments of the present disclosure;

[0041] Figure 18 This is a cross-sectional view of another fan assembly and noise reduction component provided according to some embodiments of the present disclosure. Detailed Implementation

[0042] The technical solutions in some embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments provided in this disclosure are within the scope of protection of this disclosure.

[0043] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms, such as the third-person singular "comprises" and the present participle "comprising," are interpreted as open-ended and encompassing, meaning "including, but not limited to." In the description of the specification, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples," etc., are intended to indicate that a particular feature, structure, material, or characteristic associated with this embodiment or example is included in at least one embodiment or example of this disclosure. The illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics mentioned may be included in any suitable manner in any one or more embodiments or examples.

[0044] Hereinafter, the terms "first", "second", "third", etc. are used only for the purpose of description, and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0045] In addition, the use of "based on" means open and inclusive, as a process, step, calculation or other action that is "based on" one or more stated conditions or values can be based on additional conditions or values beyond those stated.

[0046] As used herein, "parallel", "perpendicular", "equal" include the recited condition and conditions that approximate the recited condition within an acceptable range of deviation, where the acceptable range of deviation is as determined by one of ordinary skill in the art taking into account the measurement being discussed and the error associated with the measurement of the particular quantity (i.e., limitations of the measurement system). For example, "parallel" includes absolute parallel and near parallel, where the acceptable range of deviation for near parallel can be, for example, within 5°; "perpendicular" includes absolute perpendicular and near perpendicular, where the acceptable range of deviation for near perpendicular can also be, for example, within 5°. "Equal" includes absolute equality and near equality, where the acceptable range of deviation for near equality can be, for example, a difference between the two that is less than or equal to 5% of either.

[0047] Exemplary embodiments are described herein with reference to cross-sectional and / or plan view illustrations that are idealized examples. In the drawings, the area of the regions can be exaggerated for clarity. Thus, variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and / or tolerances, are to be expected. Therefore, exemplary embodiments should not be construed as limited to the particular shapes of regions illustrated herein but are to include deviations in shapes that result, for example, from manufacturing. For example, an etched region illustrated as a rectangle will typically have curved or jagged features. Thus, the regions illustrated in the drawings are schematic and their shapes are not intended to illustrate the precise shape of a region of a device and are not intended to limit the scope of exemplary embodiments.

[0048] As shown in FIG. 1, the gas water heater 100 includes a housing 1, a fan assembly 2, a combustion system 3, and a waterway system 4. Figure 1A As shown in FIG. 1, the gas water heater 100 includes a housing 1, a fan assembly 2, a combustion system 3, and a waterway system 4. Figure 1B As shown in FIG. 1, the gas water heater 100 includes a housing 1, a fan assembly 2, a combustion system 3, and a waterway system 4. Figure 2 As shown in FIG. 1, the gas water heater 100 includes a housing 1, a fan assembly 2, a combustion system 3, and a waterway system 4.

[0049] In some examples, in combination with Figure 2 As shown in FIG. 1, the gas water heater 100 includes a housing 1, a fan assembly 2, a combustion system 3, and a waterway system 4. Figure 3AThe bottom of the shell 1 is provided with a through hole 1A. The fan assembly 2 is located in the shell 1, and the fan assembly 2 has an air inlet 2A.

[0050] The shell 1 is used to protect the components arranged in the shell 1, and by arranging the shell 1, the gas water heater 100 can also be more beautiful.

[0051] Exemplarily, the material of the shell 1 includes a metal material.

[0052] For example, the material of the shell 1 can be iron, stainless steel, etc.

[0053] The metal material has high strength, and by arranging the material of the shell 1 to include a metal material, the strength of the shell 1 can be improved.

[0054] The through hole 1A is used to communicate the inside of the shell 1 with the outside, so that the air outside can enter the inside of the shell 1 through the through hole 1A.

[0055] Exemplarily, as shown in Figures 3A to 3D , the shape of the through hole 1A can be rectangular, circular, louvered or other shapes.

[0056] Exemplarily, as shown in Figure 3B , the number of through holes 1A can be 1, which can reduce the processing times of the shell 1, facilitate reducing the processing difficulty of the shell 1, and improve the processing efficiency of the shell 1.

[0057] Alternatively, as shown in Figure 3A , the number of through holes 1A can also be multiple. For example, the number of through holes 1A can be 2, 4 or 16, etc. In the case that the number of through holes 1A is multiple, the efficiency of the air outside entering the inside of the shell 1 through the through hole 1A can be improved, and the internal electrical components can be cooled at the same time.

[0058] It should be noted that the shape and number of the through hole 1A are not limited in the present disclosure.

[0059] It can be understood that in the case that the number of through holes 1A is multiple, the size of each through hole 1A can be set to be small, which can avoid the entry of sundries into the inside of the fan assembly 2 from the through hole 1A.

[0060] Exemplarily, the air inlet 2A of the fan assembly 2 is arranged near the through hole 1A, which facilitates the air inlet 2A to more easily suck in the air entering through the through hole 1A, and improves the air inlet efficiency of the air inlet 2A of the fan assembly 2.

[0061] Exemplarily, the fan assembly 2 is a centrifugal fan, and in other examples, the fan assembly 2 can also be an axial fan or a cross-flow fan, etc.

[0062] The fan assembly 2 is configured to draw air entering the fan assembly 2 from the air inlet 2A and to ultimately deliver the air to the combustion system 3. In some examples, as shown in Figure 4 The fan assembly 2 includes a fan housing 21 and an impeller 22 positioned within the fan housing 21, as shown in Figure 5 and Figure 6 The fan housing 21 forms the air inlet 2A of the fan assembly 2, as shown in Figures 4-7 The impeller 22 has a middle portion forming an air inlet cavity 2B, which is in communication with the air inlet 2A. The fan housing 21 also forms an air outlet 2C of the fan assembly 2.

[0063] The fan housing 21 is configured to protect the impeller 22 positioned within the fan housing 21. In addition, the fan housing 21 is configured to restrict the flow direction of the air within the fan housing 21, for example, the air within the fan housing 21 can only enter from the air inlet 2A and exit from the air outlet 2C.

[0064] In some examples, as shown in Figure 7 The impeller 22 has a hollow structure, and the hollow region of the impeller 22 forms the air inlet cavity 2B.

[0065] In some examples, the blades of the impeller 22 are evenly distributed around the outer circumference of the impeller 22.

[0066] In some examples, the air inlet cavity 2B has a cylindrical shape or a circular boss shape.

[0067] During the rotation of the impeller 22, air enters the air inlet cavity 2B from the air inlet 2A of the fan assembly 2. The air within the air inlet cavity 2B moves to the periphery of the impeller 22 due to the centrifugal force. Due to the blocking effect of the fan housing 21, the air within the air inlet cavity 2B can only exit from the air outlet 2C of the fan assembly 2.

[0068] The air inlet cavity 2B is in communication with the air inlet 2A, which facilitates the air entering the air inlet cavity 2B from the air inlet 2A.

[0069] In some examples, as shown in Figure 2 and Figure 8 The combustion system 3 is fixed within the housing 1 and is positioned above the fan assembly 2. The combustion system 3 includes a combustion chamber 31, a burner 32 positioned within the combustion chamber 31, and an exhaust passage 33 in communication with the top of the combustion chamber 31. The air outlet 2C of the fan assembly 2 is in communication with the bottom of the combustion chamber 31. The waterway system 4 is fixed within the housing 1, and a portion of the waterway system 4 is positioned within the combustion chamber 31. The burner 32 is configured to heat the portion of the waterway system 4 positioned within the combustion chamber 31.

[0070] In some examples, as shown in Figure 2As shown, the combustion system 3 further comprises a gas pipe 34, which is extended into the combustion chamber 31 from outside the housing 1. The gas pipe 34 is used to deliver gas.

[0071] For example, the gas comprises methane and the like.

[0072] For example, the burner 32 is connected with the gas pipe 34, and the burner 32 comprises a plurality of fire plate pieces with openings. The gas is distributed by an internal distribution pipe to each fire plate piece and is sprayed from the openings on each fire plate piece, so that each fire plate piece can participate in combustion.

[0073] For example, the combustion chamber 31 is a relatively closed space. By making the air outlet 2C of the fan assembly 2 communicate with the bottom of the combustion chamber 31, air from outside can be sent into the combustion chamber 31, which is conducive to the full contact of the flame on the burner 32 with air, and thus makes the combustion of the gas more sufficient. By arranging the exhaust passage 33 at the top of the combustion chamber 31, the exhaust gas generated after the combustion of the gas can be discharged to the outside of the gas water heater 100 through the exhaust passage 33. During the operation of the fan assembly 2, the gas in the combustion chamber 31 can form a convection, which is conducive to the entry of air from outside into the combustion chamber 31 and the quick discharge of the exhaust gas generated after the combustion of the gas in the combustion chamber 31.

[0074] In some examples, the combustion system 3 further comprises an ignition component, which is used to ignite the gas sprayed from the openings of the fire plate pieces.

[0075] For example, the water system 4 is used to provide a water flow passage in the gas water heater 100.

[0076] By arranging part of the water system 4 in the combustion chamber 31, the water in the part of the water system 4 arranged in the combustion chamber 31 can be heated after the combustion of the gas sprayed by the burner 32, so as to realize the heating function of the gas water heater 100.

[0077] In combination with Figure 2 and Figure 9 , the water system 4 comprises a water inlet pipe 41, a water outlet pipe 42, and a heat exchanger 43 communicating the water inlet pipe 41 and the water outlet pipe 42. The heat exchanger 43 is arranged in the combustion chamber 31 and located above the burner 32. The burner 32 is used to heat the heat exchanger 43.

[0078] For example, the water inlet pipe 41 communicates with the outside, and is used to pass in water to be heated. The water to be heated can flow into the heat exchanger 43 through the water inlet pipe 41.

[0079] After the gas water heater 100 starts to work, the gas is input into the burner 32 in the combustion system 3, the gas can be combusted on the fire grate in the burner 32 and heat the heat exchanger 43 arranged in the combustion chamber 31, so as to realize the function of heating the water to be heated in the heat exchanger 43, and then the water heated in the heat exchanger 43 flows out of the gas water heater 100 through the water outlet pipe 42.

[0080] For example, the heat exchanger 43 is provided with a plurality of heat exchange fins, which can increase the heat exchange efficiency of the heat exchanger 43, so as to improve the heating efficiency of the burner 32 on the heat exchanger 43, so that the water to be heated in the heat exchanger 43 can be quickly heated.

[0081] In some examples, as shown in Figure 1B The gas water heater 100 further comprises a display screen 5 arranged on the shell.

[0082] For example, the display screen 5 can be a liquid crystal display screen.

[0083] For example, the display screen 5 can display the working state of the gas water heater 100 and the water outlet temperature of the water outlet pipe 42.

[0084] Alternatively, in the case of failure of the gas water heater 100, the display screen 5 can also display the fault code, so as to guide the customer to repair.

[0085] By arranging the display screen 5, the ease of use of the gas water heater 100 can be improved, and the user experience can be improved.

[0086] In the related art, in order to improve the heating speed of the gas water heater, it is necessary to enhance the combustion flame of the gas on the fire grate, so it is necessary to input more gas in the gas pipe, and correspondingly, the fan assembly needs to input more air into the combustion chamber.

[0087] In one implementation, a larger fan assembly is replaced to input more air into the combustion chamber. However, the larger fan assembly is easy to cause the overall size of the gas water heater to be larger, which affects the installation convenience of the gas water heater.

[0088] In another implementation, more air is introduced into the combustion chamber by increasing the rotating speed of the impeller in the fan assembly. However, in the current gas water heater, in order to improve the wind resistance of the gas water heater, the air inlet of the fan assembly is set to be small. After the rotating speed of the impeller is increased, the air flow speed flowing into the air inlet will be high. After the above high-speed air flow enters the air inlet cavity, it is sucked to the direction of the impeller by the negative pressure formed by the high-speed rotation of the impeller. At this time, the air flow at the air inlet will be unstable due to the inconsistent negative pressure formed around it, and the air flow in multiple directions will interfere with each other, thereby forming turbulence in the air inlet and the air inlet cavity. The above turbulence will eventually cause noise. At the same time, in the center of the air inlet cavity, due to the rotation of the impeller, a cyclone will be formed, which will also produce noise. The above multiple noises will cause the user experience to decrease.

[0089] Based on this, as shown in Figure 2 , the gas water heater 100 in the embodiment of the present disclosure further comprises a noise reduction component 6 located in the shell 1. In combination with Figure 10 and Figure 11 , the noise reduction component 6 is fixed to the outside of the fan shell 21, and the noise reduction component 6 comprises a flow dividing column 61 which passes through the air inlet 2A along the axial direction of the air inlet cavity 2B and extends into the air inlet cavity 2B. An annular gap is formed between the outer circumferential surface of the flow dividing column 61 and the inner circumferential surface of the air inlet cavity.

[0090] Exemplarily, the material of the noise reduction component 6 can include plastic, which can reduce the production cost of the noise reduction component 6.

[0091] Alternatively, the material of the noise reduction component 6 can include metal, which is conducive to improving the strength of the noise reduction component 6 and can make the flow dividing column 61 better change the flow direction of the gas flowing into the air inlet cavity 2B.

[0092] Exemplarily, the noise reduction component 6 and the fan shell 21 can be fixed by a fixing member.

[0093] Exemplarily, as shown in Figure 12A , Figure 12B , Figure 12C , the outer circumferential contour of the cross section of the flow dividing column 61 can form a rectangle, a circle, a polygon, or the outer circumferential contour of the cross section of the flow dividing column 61 can also form other shapes, which are not limited in the present disclosure.

[0094] Exemplarily, as shown in Figure 11As shown, the shunt column 61 can form a certain shielding to the air inlet 2A, and an annular gap between the outer circumferential surface of the shunt column 61 and the inner circumferential surface of the air inlet 2A forms an air inlet channel, through which the air can enter the air inlet cavity 2B.

[0095] The air inlet channel formed by the annular gap between the outer circumferential surface of the shunt column 61 and the inner circumferential surface of the air inlet 2A can guide the airflow in each direction, avoid the airflow in different directions interfering with each other, and the airflow at the air inlet 2A is more stable, so that the turbulence at the air inlet 2A can be avoided, and the noise of the turbulence at the air inlet 2A can be reduced. After the air enters the air inlet cavity 2B, the air will move to the direction of the fan blades of the impeller 22 due to the centrifugal action of the impeller 22, and the shunt column 61 extending into the air inlet cavity 2B can comb the airflow moving to the direction of the fan blades of the impeller 22, avoid the airflow in the air inlet cavity 2B being pulled by the airflow in different directions due to the inconsistent negative pressure around the airflow, reduce the interference between the airflow in different directions, and thus avoid the formation of turbulence, so as to avoid the noise caused by the turbulence in the air inlet cavity 2B; at the same time, after the air is driven to form a cyclone due to the rotation of the impeller 22, the shunt column 61 can also eliminate the vortex center of the cyclone at least to a certain extent, so as to also reduce the noise of the cyclone.

[0096] Therefore, the gas water heater 100 provided by the embodiments of the present disclosure can avoid the generation of turbulence at the air inlet 2A and reduce the noise at the air inlet 2A, and can improve the use experience of the gas water heater 100 by reducing the noise.

[0097] In some embodiments, as shown in FIG. 1, the outer peripheral contour of the cross section of the air inlet cavity 2B is circular, and the maximum radius of the outer peripheral contour of the cross section of the air inlet cavity 2B is R. Figure 13 The air inlet cavity 2B has a first center line L1, and the flow splitting column 61 has a second center line L2. The first center line L1 and the second center line L2 are parallel to each other or coincide with each other, and the minimum distance between the first center line L1 and the second center line L2 is L, 0 < L ≤ 0.1R.

[0098] For example, the minimum distance L between the first center line L1 and the second center line L2 can be 0.01R, 0.03R, 0.05R, 0.08R, 0.1R, etc.

[0099] Through the above arrangement, the flow splitting column 61 can better comb the airflow moving in the direction of the fan blades of the impeller 22, thereby better avoiding the generation of turbulence and the noise caused by turbulence. The flow splitting column 61 can also better eliminate the vortex center of the cyclone, thereby better reducing the noise of the cyclone.

[0100] In addition, through the above arrangement, the distance between the flow splitting column 61 and the fan blades of the impeller 22 can be avoided to be too close to affect the flow of air in the air inlet cavity 2B.

[0101] In some embodiments, as shown in Figure 14 the cross section of the air inlet cavity 2B is circular, and the maximum radius of the cross section of the air inlet cavity 2B is R. The cross section of the shunt column 61 is circular, and the maximum radius of the cross section of the shunt column 61 is R1. Wherein, R1 and R satisfy: 0.1R≤R1≤0.4R.

[0102] For example, the size of R1 can be 0.1R, 0.2R, 0.3R or 0.4R, etc.

[0103] It can be understood that the cross section of the shunt column 61 needs to have a certain size to change the flow direction of the gas flowing into the air inlet cavity 2B.

[0104] For example, compared with the cross section of the air inlet cavity 2B, in the case that the size of the cross section of the shunt column 61 is small, the shunt column 61 has a small shielding effect on the air inlet 2A, and the air can more easily enter the air inlet cavity 2B, and the flow rate of the air entering the air inlet cavity 2B is small. Compared with the cross section of the air inlet cavity 2B, in the case that the size of the cross section of the shunt column 61 is large, the shunt column 61 has a large shielding effect on the air inlet 2A, which can better change the flow direction of the gas flowing into the air inlet cavity 2B.

[0105] Through the above setting, the shunt column 61 can change the flow direction of the gas flowing into the air inlet cavity 2B while having a small shielding effect on the air inlet 2A, so that the air can more easily enter the air inlet cavity 2B, which is conducive to ensuring the normal air intake of the fan assembly 2.

[0106] In some embodiments, as shown in Figure 15 the fan assembly 2 further includes a driving component 23 located on the side of the fan shell 21 away from the air inlet 2A. The driving component 23 includes a driving shaft 231, part of the driving shaft 231 extends into the fan shell 21, and the part of the driving shaft 231 extending into the fan shell 21 is fixedly connected with the impeller 22. The driving shaft 231 is used to drive the impeller 22 to rotate around the axis of the driving shaft 231. In the axial direction of the air inlet cavity 2B, the size of the air inlet cavity 2B is D1, and the minimum distance between the shunt column 61 and the driving shaft 231 is D2, and D2≤0.1D1.

[0107] For example, the driving component 23 is used to drive the impeller 22 to work.

[0108] For example, the driving component 23 can be a motor.

[0109] Further, the driving component 23 can be a variable frequency motor, and the rotating speed of the variable frequency motor can be changed. When the air required for the combustion of the gas in the gas water heater 100 is less, the rotating speed of the driving component 23 can be reduced, so that the rotating speed of the impeller 22 is reduced, the air amount delivered by the fan assembly 2 into the combustion chamber 31 is reduced, the noise generated during the rotation of the impeller 22 is reduced, and the energy consumption of the driving component 23 is reduced. When the air required for the combustion of the gas in the gas water heater 100 is more, the rotating speed of the driving component 23 can be increased, so that the rotating speed of the impeller 22 is increased, the air amount delivered by the fan assembly 2 into the combustion chamber 31 is increased, the combustion of the gas in the gas water heater 100 is sufficient, the utilization rate of the gas is improved, and the consumption of the gas is reduced.

[0110] For example, the fan shell 21 is provided with a through hole, and the driving shaft 231 is fixedly connected to the impeller 22 in the fan shell 21 through the through hole.

[0111] For example, the driving shaft 231 is directly fixedly connected to the impeller 22, or the driving shaft 231 is fixedly connected to the impeller 22 through a fastener.

[0112] For example, the driving shaft 231 is provided with a first thread, the impeller 22 is provided with a second thread matched with the first thread, and the driving shaft 231 is fixedly connected to the impeller 22 through the first thread and the second thread.

[0113] For example, the driving shaft 231 is provided with a first thread, the fan assembly 2 further includes a nut matched with the first thread, and the driving shaft 231 is fixedly connected to the impeller 22 through the nut.

[0114] By setting D2≤0.1D1, the part of the shunt column 61 extending into the air inlet cavity 2B is arranged close to the driving shaft 231, the shunt column 61 can extend into the air inlet cavity 2B as much as possible, the shunt column 61 can better change the flow direction of the gas flowing into the air inlet cavity 2B, and the noise generated by the air flow into the air inlet cavity 2B is reduced.

[0115] In addition, in the above-mentioned another implementation manner, because the combustion chamber of the gas water heater is relatively closed, only the exhaust passage and the air inlet of the fan assembly are communicated with the outside, the noise generated by the fan assembly and the noise generated by the combustion of the gas in the gas water heater are transmitted from the air inlet of the fan assembly, so that the noise is released outside the machine, and the user experience is further affected.

[0116] Therefore, in the gas water heater 100 provided by the embodiments of the present application, Figure 16 As shown, the noise reduction component 6 also includes a top plate 62 located outside the fan casing 21, such as... Figure 17 and Figure 18 As shown, the top plate 62 is fixed to the fan housing 21, and the diversion column 61 is fixed to the fan housing 21 through the top plate 62. The top plate 62 is arranged opposite to the air inlet 2A of the fan assembly 2.

[0117] For example, the top plate 62 can be circular, rectangular or other shapes.

[0118] For example, the material of the top plate 62 may be the same as the material of the diversion column 61, or the material of the top plate 62 may be different from the material of the diversion column 61.

[0119] For example, the material of the top plate 62 may include plastic, metal, etc.

[0120] For example, the material of the top plate 62 can be plastic, which can reduce the production cost of the top plate 62.

[0121] Alternatively, the top plate 62 can be made of metal, which has high strength. This can enhance the strength of the top plate 62, thereby increasing the fixing strength of the diverter column 61 and helping to maintain the position of the diverter column 61 extending into the air inlet cavity 2B.

[0122] For example, the diversion column 61 and the top plate 62 can be an integral structure, or the diversion column 61 and the top plate 62 can be separate structures.

[0123] For example, when the diversion column 61 and the top plate 62 are an integral structure, the material of the diversion column 61 and the top plate 62 are the same. This can simplify the manufacturing difficulty of the diversion column 61 and the top plate 62 and enhance the connection strength between the diversion column 61 and the top plate 62.

[0124] Alternatively, if the diversion column 61 and the top plate 62 are separate structures, the materials of the diversion column 61 and the top plate 62 can be the same or different.

[0125] For example, when the diversion column 61 and the top plate 62 are separate structures, the diversion column 61 and the top plate 62 are fixedly connected by fasteners, or the diversion column 61 and the top plate 62 are fixedly connected by adhesive.

[0126] By arranging the top plate 62 opposite to the air inlet 2A of the fan assembly 2, the top plate 62 can shield the noise emitted by the air inlet 2A of the fan assembly 2 in the propagation direction, so as to avoid the noise emitted by the air inlet 2A of the fan assembly 2 from being conducted to the outside through the through hole 1A on the shell 1, which is beneficial to reduce the total noise of the gas water heater 100, thereby improving the use experience of the gas water heater 100.

[0127] In some examples, as shown in Figure 18 In the direction facing the air inlet 2A, the orthographic projection of the air inlet 2A is located within the orthographic projection range of the top plate 62.

[0128] It can be understood that the area of the top plate 62 is greater than the area of the air inlet 2A.

[0129] Through the above arrangement, the shielding effect of the top plate 62 on the noise emitted by the air inlet 2A of the fan assembly 2 in the propagation direction can be enhanced, so as to further avoid the noise emitted by the air inlet 2A of the fan assembly 2 from being conducted to the outside through the through hole 1A on the shell 1, which is beneficial to reduce the total noise of the gas water heater 100, thereby further improving the use experience of the gas water heater 100.

[0130] In some embodiments, the top plate 62 is provided with sound-absorbing material.

[0131] The sound-absorbing material is a material that can absorb sound waves.

[0132] For example, the sound-absorbing material can include rubber, sound-absorbing cotton, etc.

[0133] For example, one side of the top plate 62 facing the air inlet 2A is coated with sound-absorbing material.

[0134] Alternatively, one side of the top plate 62 facing the air inlet 2A and the other side of the top plate 62 away from the air inlet 2A are both coated with sound-absorbing material, which can enhance the sound-absorbing capacity of the top plate 62 and is beneficial to reduce noise.

[0135] After the top plate 62 is coated with sound-absorbing material, the sound-absorbing material can absorb the noise emitted by the air inlet 2A of the fan assembly 2, so as to absorb the noise on the basis of ensuring the shielding effect of the top plate 62 on the noise emitted by the air inlet 2A of the fan assembly 2 in the propagation direction, which is beneficial to reduce the noise conducted to the outside through the air inlet 2A and the through hole 1A on the shell 1, thereby reducing the total noise of the gas water heater 100 and improving the use experience of the gas water heater 100.

[0136] In some embodiments, the distance between the top plate and the air inlet is H, the circumference of the air inlet is C, and the area of the air inlet is M; wherein H, C, and M satisfy: HxC≥M.

[0137] When the noise reduction component 6 only includes the diversion column 61, air from multiple directions outside the air inlet 2A of the fan assembly 2 can enter the air inlet 2A. When the noise reduction component 6 includes the top plate 62, the top plate 62 will block part of the air, and the air needs to enter through the gap between the top plate 62 and the fan housing 21 when entering the air inlet 2A. The gap forms a new air intake channel for the fan assembly 2.

[0138] With the above settings, the air intake surface of the new air intake channel can be greater than or equal to the area of ​​the air inlet 2A. This can prevent the top plate 62 from blocking the air inlet 2A and affecting the air intake speed of the fan assembly 2's air inlet 2A. This helps maintain the normal air intake volume of the fan assembly 2, thereby ensuring the normal supply of air required by the fan assembly 2 to the combustion chamber 31. This also helps ensure the normal combustion of gas in the combustion chamber 31 and the normal working condition of the gas water heater 100.

[0139] In some embodiments, such as Figure 16 , Figure 17 , Figure 18 As shown, the noise reduction component 6 also includes a mounting bracket 63, one end of which is fixedly connected to the fan housing 21, and the other end of which is fixedly connected to the top plate 62.

[0140] For example, the mounting bracket 63 is used to fix the noise reduction component 6 to the fan housing 21 of the fan assembly 2.

[0141] For example, the number of mounting brackets 63 can be one or more.

[0142] For example, the number of mounting brackets 63 can be 1, 2, 3 or 4, etc.

[0143] For example, in Figure 16 In this case, the number of mounting brackets 63 can be 3.

[0144] With only one mounting bracket 63, the structure of the noise reduction component 6 can be simplified, the design and manufacturing difficulty of the noise reduction component 6 can be reduced, and the material cost of the noise reduction component 6 can also be reduced, thereby reducing the overall production cost of the gas water heater 100.

[0145] When there are multiple mounting brackets 63, the fixing effect of the mounting brackets 63 can be enhanced, making the fixing between the noise reduction component 6 and the fan housing 21 more secure. This helps to maintain the relative position between the diversion column 61 and the top plate 62 in the noise reduction component 6 and the fan housing 21 of the fan assembly 2, and helps to ensure the normal noise reduction effect of the diversion column 61 and the top plate 62.

[0146] Exemplarily, the material of the mounting bracket 63 can be the same as that of the top plate 62, or the material of the mounting bracket 63 can be different from that of the top plate 62.

[0147] Exemplarily, the material of the mounting bracket 63 can include plastic, metal, etc.

[0148] For example, the material of the mounting bracket 63 can be plastic, so as to reduce the production cost of the mounting bracket 63.

[0149] Alternatively, the material of the mounting bracket 63 can be metal, and the metal material has high strength, so as to enhance the strength of the mounting bracket 63, thereby enhancing the fixing strength of the top plate 62, and being beneficial to maintain the relative position between the shunt column 61, the top plate 62 and the fan shell 21 of the fan assembly 2, and being beneficial to guarantee the normal noise reduction effect of the shunt column 61 and the top plate 62.

[0150] Exemplarily, the top plate 62 and the mounting bracket 63 can be an integral structure, or the top plate 62 and the mounting bracket 63 can be a split structure.

[0151] For example, in the case that the top plate 62 and the mounting bracket 63 are an integral structure, the material of the top plate 62 is the same as that of the mounting bracket 63, so as to simplify the manufacturing difficulty of the top plate 62 and the mounting bracket 63, and enhance the connection strength of the top plate 62 and the mounting bracket 63.

[0152] Alternatively, in the case that the top plate 62 and the mounting bracket 63 are a split structure, the top plate 62 and the mounting bracket 63 can be fixedly connected through fasteners, or the top plate 62 and the mounting bracket 63 are fixedly connected through an adhesive,

[0153] Through the above setting, the fixed connection between the noise reduction component 6 and the fan shell 21 of the fan assembly 2 can be realized, which is beneficial to maintain the relative position between the shunt column 61, the top plate 62 and the fan shell 21 of the fan assembly 2, and is beneficial to guarantee the normal noise reduction effect of the shunt column 61 and the top plate 62.

[0154] Further, the shunt column 61, the top plate 62 and the mounting bracket 63 are an integral structure.

[0155] In the case that the shunt column 61, the top plate 62 and the mounting bracket 63 are an integral structure, the material of the shunt column 61, the material of the top plate 62 and the material of the mounting bracket 63 are the same, so as to simplify the manufacturing difficulty of the shunt column 61, the top plate 62 and the mounting bracket 63, and enhance the connection strength of the shunt column 61, the top plate 62 and the mounting bracket 63.

[0156] Through the above setting, the overall strength of the noise reduction component 6 can be ensured, the fixed connection of the noise reduction component 6 and the fan shell 21 of the fan assembly 2 can be achieved, the relative positions between the shunt column 61, the top plate 62 and the fan shell 21 of the fan assembly 2 can be maintained, and the normal noise reduction effect of the shunt column 61 and the top plate 62 can be ensured.

[0157] In some examples, with reference to Figure 2 In the gas water heater 100, a check valve and a water inlet temperature sensor are arranged on the water inlet pipe 41. The check valve is used to avoid the water in the gas water heater 100 from flowing back to the water inlet pipe 41 from the water outlet pipe 42. The water inlet temperature sensor is used to detect the temperature of the water to be heated flowing into the water inlet pipe 41.

[0158] In some examples, a water outlet temperature sensor is arranged on the water outlet pipe 42. The water outlet temperature sensor is used to detect the temperature of the heated water flowing out of the water outlet pipe 42.

[0159] In some examples, an electronic control valve is arranged on the gas pipe 34, and the electronic control valve is used to control the flow rate of the gas delivered in the gas pipe 34.

[0160] In some examples, the gas water heater 100 comprises a processor connected with the above-mentioned water inlet temperature sensor, water outlet temperature sensor, electronic control valve and fan assembly 2. The processor is used to output control signals to the electronic control valve and fan assembly 2 according to the preset temperature set by the user, the temperature of the water to be heated flowing into the water inlet pipe 41 detected by the water inlet temperature sensor, and the temperature of the heated water flowing out of the water outlet pipe 42 detected by the water outlet temperature sensor.

[0161] After the user opens the gas water heater 100 to start heating water, the gas water heater 100 starts heating the water flowing into the gas water heater 100 to a preset temperature. The inlet water temperature sensor transmits the temperature signal of the water flowing into the inlet water pipe 41 to be heated to the processor. The outlet water temperature sensor transmits the temperature signal of the heated water flowing out of the outlet water pipe 42 to the processor. After receiving the above signals, the processor obtains the temperature of the water flowing into the inlet water pipe 41 to be heated and the temperature of the heated water flowing out of the outlet water pipe 42. Then, the processor compares the above temperatures with the preset temperature and outputs corresponding control signals to the electronic control valve and the fan assembly 2 respectively. After receiving the control signal from the processor, the electronic control valve can make corresponding actions to adjust the flow of gas in the gas pipe 34. After receiving the control signal from the processor, the fan assembly 2 can adjust the rotating speed of the impeller 22 to adjust the amount of air delivered to the combustion chamber 31. Through the above adjustment, the combustion intensity of the gas in the gas water heater 100 can be controlled, and the heating rate of the water flowing through the heat exchanger 43 is adjusted, so that the temperature of the heated water flowing out of the outlet water pipe 42 can reach the preset temperature as soon as possible, improving the use experience of the gas water heater 100.

[0162] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art can think of changes or replacements within the technical scope disclosed by the present disclosure, which shall be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A gas water heater, characterized in that, The gas water heater includes: The outer casing has a through hole at its bottom; A fan assembly, located within the housing, having an air inlet; and The noise reduction component is located inside the housing; The fan assembly includes a fan housing and an impeller located inside the fan housing. The fan housing forms the air inlet of the fan assembly, and the impeller forms an air inlet chamber in the middle. The noise reduction component is fixed to the outside of the fan housing. The noise reduction component includes a diverter column, which passes through the air inlet along the axial direction of the air inlet cavity and extends into the air inlet cavity. An annular gap is formed between the outer peripheral surface of the diverter column and the inner peripheral surface of the air inlet cavity. The outer periphery of the cross-section of the air inlet cavity is circular, and the maximum radius of the outer periphery of the cross-section of the air inlet cavity is R. The air inlet cavity has a first centerline, and the flow divider column has a second centerline. The first centerline and the second centerline are parallel to each other, and the minimum distance between the first centerline and the second centerline is L. <L≤0.1R。 2. The gas water heater according to claim 1, characterized in that, The outer periphery of the cross-section of the diversion column is circular, and the maximum radius of the outer periphery of the cross-section of the diversion column is R1. Among them, R1 and R satisfy: 0.1R≤R1≤0.4R.

3. The gas water heater according to claim 1, characterized in that, The fan assembly also includes a drive component located on the side of the fan housing away from the air inlet; The driving component includes a drive shaft, a portion of which extends into the fan housing. The portion of the drive shaft extending into the fan housing is fixedly connected to the impeller. The drive shaft is used to drive the impeller to rotate about the axial direction of the drive shaft. In the axial direction of the air inlet cavity, the size of the air inlet cavity is D1, and the minimum distance between the diverter column and the drive shaft is D2, where D2≤0.1D1.

4. The gas water heater according to any one of claims 1 to 3, characterized in that, The noise reduction component also includes a top plate located outside the fan housing. The top plate is fixed to the fan housing, and the diversion column is fixed to the fan housing through the top plate. The top plate is arranged opposite to the air inlet of the fan assembly.

5. The gas water heater according to claim 4, characterized in that, The top plate is equipped with sound-absorbing material.

6. The gas water heater according to claim 4, characterized in that, The distance between the top plate and the air inlet is H; the perimeter of the air inlet is C; and the area of ​​the air inlet is M. Among them, H, C, and M satisfy: H×C≥M.

7. The gas water heater according to claim 4, characterized in that, The noise reduction component also includes a mounting bracket, one end of which is fixedly connected to the fan housing, and the other end of which is fixedly connected to the top plate.

8. The gas water heater according to claim 4, characterized in that, In the direction facing the air inlet, the orthographic projection of the air inlet is located within the orthographic projection range of the top plate.

9. The gas water heater according to claim 4, characterized in that, The gas water heater also includes a combustion system and a water circuit system; The combustion system is fixed inside the housing and located above the fan assembly; the combustion system includes a combustion chamber, a burner disposed in the combustion chamber, and an exhaust passage communicating with the top of the combustion chamber; The water system is fixed inside the outer casing, and a portion of the water system is located within the combustion chamber; The burner is used to heat the portion of the water system located in the combustion chamber; The fan housing also forms the air outlet of the fan assembly, and the air outlet is connected to the bottom of the combustion chamber.

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