CN115234514A - Fan and gas water heater comprising same - Google Patents

Fan and gas water heater comprising same Download PDF

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Publication number
CN115234514A
CN115234514A CN202210931000.8A CN202210931000A CN115234514A CN 115234514 A CN115234514 A CN 115234514A CN 202210931000 A CN202210931000 A CN 202210931000A CN 115234514 A CN115234514 A CN 115234514A
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CN
China
Prior art keywords
air inlet
fan
hole
air
shielding piece
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Granted
Application number
CN202210931000.8A
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Chinese (zh)
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CN115234514B (en
Inventor
段裘铭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Application filed by Ningbo Fotile Kitchen Ware Co Ltd filed Critical Ningbo Fotile Kitchen Ware Co Ltd
Priority to CN202210931000.8A priority Critical patent/CN115234514B/en
Priority claimed from CN202210931000.8A external-priority patent/CN115234514B/en
Publication of CN115234514A publication Critical patent/CN115234514A/en
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Publication of CN115234514B publication Critical patent/CN115234514B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/403—Casings; Connections of working fluid especially adapted for elastic fluid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a fan and a gas water heater comprising the same, wherein the fan comprises an outer shell and an air inlet adjusting mechanism, the outer shell is provided with a first side wall, a first through hole is formed in the first side wall, the air inlet adjusting mechanism comprises an air inlet channel, two ends of the air inlet channel are respectively provided with an air inlet communicated with the outside and an air outlet communicated with the first through hole, and the opening size of the cross section of the air inlet channel is gradually increased from the air inlet to the air outlet; the air inlet adjusting mechanism further comprises a shielding piece, the shielding piece is arranged at one end, close to the air inlet, of the air inlet channel, and the shielding piece can move towards one side close to the air outlet when the pressure difference of the two sides of the shielding piece exceeds a preset pressure difference. When the fan works, the fan impeller rotates, a negative pressure area is formed in the fan, the higher the rotating speed of the fan is, the larger the pressure difference between two sides of the shielding piece in the air inlet channel is, the shielding piece moves to one side of the air outlet, the air inlet area at the air inlet is enlarged, and therefore the air inlet amount is increased.

Description

Fan and gas water heater comprising same
Technical Field
The invention relates to a fan and a gas water heater comprising the same.
Background
The air inlet volume of the existing fan is fixed and is determined by the diameter of an air inlet, and cannot be adjusted, or the air inlet volume of the fan can be adjusted only by manually adjusting the size of the air inlet. When the rotating speed of the fan changes, the open area of the air inlet of the fan cannot be changed according to the requirement of the air inlet amount, so that when the rotating speed of the fan is large and the open area of the air inlet is too small, not only can enough air volume be obtained, but also large noise can be generated, and the user experience is influenced.
Disclosure of Invention
The invention aims to solve the technical problem that the size of an air inlet of a fan cannot be adjusted along with the rotating speed of the fan in the prior art, and provides the fan and a gas water heater comprising the same.
The invention solves the technical problems through the following technical scheme:
the invention provides a fan, which comprises an outer shell, wherein the outer shell is provided with a first side wall, the first side wall is provided with a first through hole, the fan also comprises an air inlet adjusting mechanism, the air inlet adjusting mechanism comprises an air inlet channel, two ends of the air inlet channel are respectively provided with an air inlet communicated with the outside and an air outlet communicated with the first through hole, and the opening size of the cross section of the air inlet channel is gradually increased from the air inlet to the air outlet;
the air inlet adjusting mechanism further comprises a shielding piece, the shielding piece is arranged at one end, close to the air inlet, in the air inlet channel, and the shielding piece is arranged to move towards one side, close to the air outlet, when the pressure difference of two sides of the shielding piece exceeds the preset pressure difference.
In this scheme, adopt above-mentioned structure, fan during operation, fan wheel rotates, the inside negative pressure zone that forms of fan, and fan rotational speed is higher, and the pressure differential of the shielding piece both sides in the inlet air duct is big more, and the shielding piece removes to air outlet one side for air intake department air intake area increases, thereby makes the intake increase. The air inlet adjusting mechanism can realize that the air inlet area is adjusted along with the rotating speed of the fan, so that the working range of the fan is enlarged, and the applicability is better.
Preferably, the air inlet adjusting mechanism further comprises a reset piece, and the reset piece is used for enabling the shielding piece to return to the initial position when the pressure difference between two sides of the shielding piece is smaller than a preset pressure difference.
In this scheme, make the fan after the stop work or fan rotational speed reduce the back through setting up the piece that resets, the shielding piece can get back to the one end that is close to the air intake to the opening size of shielding piece automatically regulated air intake again can be according to the operating condition of fan.
Preferably, the reset piece is a spring, and the spring is arranged on one side of the shielding piece close to the air outlet.
In this scheme, the piece that resets adopts the spring, simple structure, easy to assemble.
Preferably, a guide rod is further arranged in the air inlet channel, and the shielding piece is slidably arranged on the guide rod.
In this scheme, lead to the shielding piece through setting up the guide rod, avoid the shielding piece to take place the skew in inlet air duct and influence the air inlet regulation effect.
Preferably, the air inlet adjusting mechanism comprises a plurality of air inlet channels, and the shielding piece is arranged in each air inlet channel.
In this scheme, adopt above-mentioned structure, guarantee through a plurality of inlet air channel that the fan has sufficient intake, avoid the not enough working property that influences the fan of air inlet.
Preferably, the air inlet adjusting mechanism comprises a cylindrical shell, the air inlet channel extends along the radial direction of the cylindrical shell, and the air inlet is formed in the cylindrical peripheral wall.
In this scheme, adopt above-mentioned structure for air inlet adjustment mechanism simple structure, easy to assemble are convenient for set up the inlet air channel of a plurality of different orientation air intakes simultaneously, guarantee the stability of intake.
Preferably, the air inlet channel is in a splayed structure.
In this scheme, inlet air channel adopts the splayed structure, when guaranteeing inlet air channel's opening cross-section crescent, simple structure, easily processing.
Preferably, the cylindrical shell is provided with an end plate attached to the first side wall, a second through hole is formed in the middle of the end plate, and the air outlet is communicated with the first through hole through the second through hole.
In this scheme, adopt above-mentioned structure for fan compact structure.
Preferably, the second through hole and the first through hole have the same structure size and are concentrically arranged; or the first through hole is positioned in the inner side area of the second through hole.
In this scheme, adopt above-mentioned structure, guarantee that the fan can reach the biggest intake.
The invention also provides a gas water heater, which comprises the fan.
The positive progress effects of the invention are as follows: when the fan works, the fan impeller rotates, a negative pressure area is formed in the fan, the higher the rotating speed of the fan is, the larger the pressure difference between two sides of the shielding piece in the air inlet channel is, the shielding piece moves to one side of the air outlet, the air inlet area at the air inlet is enlarged, and therefore the air inlet amount is increased. The air inlet adjusting mechanism can realize that the air inlet area is adjusted along with the rotating speed of the fan, so that the working range of the fan is enlarged, and the applicability is better.
Drawings
Fig. 1 is a schematic structural diagram of a fan in a preferred embodiment of the present invention.
Fig. 2 is an exploded view of the intake air adjusting mechanism of the blower in fig. 1.
Fig. 3 is a schematic structural diagram of the intake air adjusting mechanism in fig. 1.
Fig. 4 is a schematic diagram of an internal structure of the intake air adjusting mechanism in fig. 3.
Description of reference numerals:
outer casing 100
The first side wall 110
First via hole 111
Air inlet adjusting mechanism 200
Air intake duct 210
The air inlet 211
Air outlet 212
Shield 220
Spring 230
Guide rod 240
Cylindrical housing 250
End plate 251
Second via 252
Detailed Description
The invention will be more clearly and completely illustrated by way of example in the accompanying drawings, without thereby limiting the scope of the invention to this embodiment.
As shown in fig. 1 to 4, a blower disclosed in this embodiment includes an outer casing 100, the outer casing 100 has a first sidewall 110, and the first sidewall 110 is provided with a first through hole 111; the fan further comprises an air inlet adjusting mechanism 200, the air inlet adjusting mechanism 200 comprises an air inlet channel 210, two ends of the air inlet channel 210 are respectively provided with an air inlet 211 communicated with the outside and an air outlet 212 communicated with the first through hole 111, and the opening size of the cross section of the air inlet channel 210 is gradually increased from the air inlet 211 to the air outlet 212. The air inlet adjusting mechanism 200 further includes a shielding element 220, the shielding element 220 is disposed at an end of the air inlet channel 210 close to the air inlet 211, and the shielding element 220 is configured to move toward a side close to the air outlet 212 when a pressure difference between two sides of the shielding element 220 exceeds a predetermined pressure difference.
The fan of this embodiment adopts above-mentioned structure, and the during operation, fan wheel rotate, and the inside negative pressure zone that forms of fan, and the higher the fan rotational speed, the bigger the pressure differential of shielding piece 220 both sides in the inlet air duct 210 is, and shielding piece 220 removes to air outlet 212 one side for air intake 211 department air inlet area increases, thereby makes the intake increase. The air inlet adjusting mechanism 200 can realize that the air inlet area is adjusted together along with the rotating speed of the fan, so that the working range of the fan is enlarged, and the applicability is better.
In this embodiment, the shielding element 220 is a square block made of a light material, such as foam or hollow body, which is beneficial to the movement of the shielding element 220 under a certain pressure difference.
The intake air adjusting mechanism 200 further includes a reset member for returning the shield 220 to an initial position when a pressure difference between both sides of the shield 220 is less than a preset pressure difference.
In this embodiment, the reset element is arranged to enable the shielding element 220 to return to the end close to the air inlet 211 after the blower stops working or the rotational speed of the blower is reduced, so that the shielding element 220 can automatically adjust the size of the opening of the air inlet 211 again according to the working state of the blower.
As shown in fig. 4, the restoring member in this embodiment is a spring 230, and the spring 230 is disposed on a side of the shielding member 220 close to the air outlet 212. The reset piece adopts a spring 230, so that the structure is simple and the installation is convenient; the spring 230 is disposed on a side of the shielding member 220 close to the air outlet 212, so as to ensure that the shielding member 220 has a larger stroke, and further, the size of the opening of the air inlet 211 of the air inlet channel 210 can have a larger adjustment range. The spring 230 is preferably a spring 230 with a small spring constant, so that the shutter 220 can overcome the spring force of the spring 230 under a certain pressure difference.
In other embodiments, the reset element may be selected from other elastic elements, such as an elastic sheet.
As shown in FIG. 4, in the present embodiment, a guide rod 240 is further disposed in the air inlet channel 210, and the shielding member 220 is slidably disposed on the guide rod 240. The guide rod 240 is arranged to guide the shielding piece 220, so that the shielding piece 220 is prevented from deviating in the air inlet channel 210 to influence the air inlet adjusting effect.
In this embodiment, two ends of the guide rod 240 are fixed by the mounting seats disposed at two ends of the air inlet channel 210, the spring 230 is sleeved on the guide rod 240, and two ends of the spring 230 abut against the mounting seats disposed at one end of the air outlet 212 in the shielding element 220 and the air inlet channel 210, respectively.
The air inlet adjusting mechanism 200 includes a plurality of air inlet channels 210, and a shielding member 220 is disposed in each air inlet channel 210. The air inlet channels 210 ensure that the fan has enough air inlet volume, and the working performance of the fan is prevented from being influenced by insufficient air inlet.
In this embodiment, there are 6 air inlet channels 210. Of course, the number of the air intake channels 210 can be one, two or other according to actual requirements.
As shown in fig. 3 and 4, in the present embodiment, the intake air adjusting mechanism 200 includes a cylindrical housing 250, a plurality of intake air passages 210 extending in a radial direction of the cylindrical housing 250, and an intake opening 211 provided in a cylindrical outer peripheral wall.
The air inlet adjusting mechanism 200 adopts the cylindrical shell 250, so that the air inlet adjusting mechanism 200 is simple in structure and convenient to install, and meanwhile, a plurality of air inlet channels 210 which face the air inlet 211 in different directions are convenient to arrange, and the stability of the air inlet amount is ensured.
As shown in fig. 4, in the present embodiment, the air inlet channel 210 has a splayed structure. The air inlet channel 210 adopts a splayed structure, so that the opening section of the air inlet channel 210 is gradually enlarged, and the structure is simple and easy to process.
In other embodiments, the air inlet channel 210 may also be a frustum structure or the like, and it is only necessary to ensure that the opening around the shielding element 220 is in an increased state when the shielding element 220 moves from the air inlet 211 end to the air outlet 212 end of the air inlet channel 210, which is not described in detail herein.
As shown in fig. 3, the cylindrical housing 250 has an end plate 251 attached to the first sidewall 110, a second through hole 252 is formed in the middle of the end plate 251, and the air outlet 212 is communicated with the first through hole 111 through the second through hole 252. By adopting the structure, the fan is compact in structure.
In this embodiment, the second through hole 252 and the first through hole 111 have the same size and are concentrically disposed. By adopting the structure, the maximum air inlet volume of the fan can be ensured.
In other embodiments, the first through hole 111 is located in an inner area of the second through hole 252. Of course, the opening area of the first through hole 111 may be larger than that of the second through hole 252, which is not described herein again.
The embodiment also provides a gas water heater, which comprises the fan. This gas heater can adjust the rotational speed of fan according to different operating condition, when needing the fan to increase the intake, makes the pressure differential of shielding piece 220 both sides in the inlet air duct 210 big more through increase fan rotational speed, and shielding piece 220 removes to air outlet 212 one side, then makes air intake 211 department air inlet area increase to make the intake increase.
While specific embodiments of the invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of this invention, and these changes and modifications are within the scope of this invention.

Claims (10)

1. A fan comprises an outer shell, wherein the outer shell is provided with a first side wall, and a first through hole is formed in the first side wall, and the fan is characterized by further comprising an air inlet adjusting mechanism, wherein the air inlet adjusting mechanism comprises an air inlet channel, an air inlet communicated with the outside and an air outlet communicated with the first through hole are formed in two ends of the air inlet channel respectively, and the opening size of the cross section of the air inlet channel is gradually increased from the air inlet to the air outlet;
the air inlet adjusting mechanism further comprises a shielding piece, the shielding piece is arranged at one end, close to the air inlet, in the air inlet channel, and the shielding piece is arranged to move towards one side, close to the air outlet, when the pressure difference of two sides of the shielding piece exceeds the preset pressure difference.
2. The blower of claim 1, wherein the intake air adjustment mechanism further comprises a reset member for returning the shield to an initial position when a pressure differential across the shield is less than a predetermined pressure differential.
3. The fan of claim 2, wherein the return element is a spring disposed on a side of the shield element adjacent to the outlet.
4. The fan as claimed in claim 1, wherein a guide rod is further disposed in the air inlet channel, and the shielding member is slidably disposed on the guide rod.
5. The fan as claimed in claim 1, wherein the air inlet adjusting mechanism comprises a plurality of air inlet channels, and the shielding member is disposed in each air inlet channel.
6. The fan as claimed in claim 5, wherein the air inlet adjusting mechanism comprises a cylindrical housing, a plurality of air inlet passages extend along a radial direction of the cylindrical housing, and the air inlet is formed in the cylindrical outer peripheral wall.
7. The fan as claimed in claim 6, wherein the air inlet passage has a splayed structure.
8. The fan according to claim 6, wherein the cylindrical housing has an end plate attached to the first side wall, a second through hole is formed in a middle portion of the end plate, and the air outlet is communicated with the first through hole through the second through hole.
9. The fan of claim 8 wherein the second through hole is the same size and is concentrically disposed with the first through hole; or the first through hole is positioned in the inner side area of the second through hole.
10. A gas water heater, characterized in that it comprises a fan according to any one of claims 1 to 9.
CN202210931000.8A 2022-08-04 Fan and gas water heater comprising same Active CN115234514B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210931000.8A CN115234514B (en) 2022-08-04 Fan and gas water heater comprising same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210931000.8A CN115234514B (en) 2022-08-04 Fan and gas water heater comprising same

Publications (2)

Publication Number Publication Date
CN115234514A true CN115234514A (en) 2022-10-25
CN115234514B CN115234514B (en) 2024-06-28

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