CN215109260U

CN215109260U - Energy recovery device for water heater

Info

Publication number: CN215109260U
Application number: CN202121085324.1U
Authority: CN
Inventors: 周俊屹; 刘琰; 李伟锋; 张西瑛; 彭美婷; 贺冰琳; 王佳威
Original assignee: Xian Aeronautical University
Current assignee: Xian Aeronautical University
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2021-12-10
Anticipated expiration: 2031-05-17

Abstract

The utility model discloses an energy recuperation device for water heater, including casing and impeller, discoid drainage chamber has in the casing, impeller normal running fit installs in the drainage intracavity, the impeller includes that carousel and circumference distribute in the blade of carousel excircle, when the blade rotates along with the carousel and surpasss water inlet department, the blade is rotated by the water impact and is expanded, when the blade rotates along with the carousel and surpasses the delivery port, the blade rotates and folds to paste in carousel excircle department, and the guiding gutter has been seted up to the blade bottom, the guiding gutter extends to the root along the blade head to make the blade be fold condition when the water inlet, the rivers that face blade head flow in the water inlet can flow to the guiding gutter and exert the driving force that makes the blade expand to the blade bottom. The utility model discloses in can promote the impeller through the flow of rivers and rotate, do benefit to the recycle of rivers kinetic energy, the blade can expand or fold at the carousel excircle moreover, does benefit to the space that reduces the drainage chamber, improves the compact structure nature of whole device.

Description

Energy recovery device for water heater

Technical Field

The utility model relates to a water heater technical field, in particular to energy recuperation device for water heater.

Background

At present, solar water heaters are greatly developed and popularized to thousands of households. However, the solar water heater has a problem of wasting water energy for a long time, a pipeline from a water tank to a user usually retains some cold water, and most of users drain the cold water when using hot water, so that not only is the water flow wasted, but also the water energy is lost.

Therefore, in order to solve the above problems, there is a need for an energy recovery device for a water heater, which can be installed on a water flow path of the water heater for recovering water energy.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an energy recovery device for a water heater, which comprises a housing and an impeller, a disc-shaped drainage cavity is arranged in the shell, a water inlet and a water outlet which are communicated with the drainage cavity are arranged on the shell, the impeller is arranged in the drainage cavity in a rotating fit manner, the impeller comprises a rotary table and blades circumferentially distributed on the outer circle of the rotary table, the blades are arranged at the outer circle of the rotary disc in a mode of rotating along the circumferential direction of the rotary disc, when the blades exceed the water inlet along with the rotation of the rotary disc, the blades are impacted by water flow to rotate and spread, when the blades rotate along with the rotating disc and exceed the water outlet, the blades rotate and are folded and attached to the outer circle of the rotating disc, the bottom of each blade is provided with a diversion trench, the diversion trench extends to the root along the head of each blade, when the blades pass through the water inlet in a folded state, water flow flowing towards the head of the blades in the water inlet can flow into the diversion trench and exert pushing force for unfolding the blades on the bottom of the blades.

Further, the blade is including being cylindric base and connecting in the base excircle and the blade body of outside extension, the mounting groove has been seted up to the carousel excircle, base normal running fit installs in the mounting groove, the guiding gutter is seted up in blade body bottom.

Further, the diversion trench extends backwards from the head of the blade body to the back of the blade by bypassing the base.

Further, the turntable is eccentrically installed in the drainage cavity, so that a flow passing channel with a large width is formed between the right side of the outer circle of the turntable and the inner circle of the drainage cavity, and a flow blocking channel with a narrow width is formed between the left side of the outer circle of the turntable and the inner circle of the drainage cavity, the width of the flow passing channel is larger than the size of the outer circle of the turntable when the blades are unfolded, and the width of the flow blocking channel is smaller than the size of the outer circle of the turntable when the blades are unfolded.

Furthermore, a bottom buffer layer is arranged in the position, facing the bottom of the blade body, in the mounting groove.

Further, a back buffer layer is arranged in the mounting groove and faces the back of the blade body.

Furthermore, the water inlet and the water outlet are positioned on the upper side and the lower side of the drainage cavity and positioned in the same radial direction.

Furthermore, the casing includes upper housing and lower casing, the sealed lid of upper housing is on lower casing and encloses into the drainage chamber.

The utility model has the advantages that:

the utility model can push the impeller to rotate through the flow of water flow, which is beneficial to recycling the water flow energy, and the blade can be unfolded or folded at the excircle of the turntable, which is beneficial to reducing the space of the drainage cavity and improving the structure compactness of the whole device; the arrangement of the diversion trench on the blade is beneficial to the water flow of the water inlet to flow to the lower part of the blade, and can form an upward acting force on the blade, thus being beneficial to the expansion of the blade; the guide groove extends to the back of the base, water flows can flow to the back of the mounting groove through the guide groove by the structure, namely, the water flow is ensured between the back of the blade and the back of the mounting groove all the time, and the hydraulic power is used for buffering the back of the blade and the back of the mounting groove in the unfolding process of the blade so as to prevent the blade from directly colliding with the mounting groove; and the setting of guiding gutter for have the water storage clearance between blade bottom and the carousel excircle, do benefit to the storage of water, can form the buffering to blade folding in-process equally, avoid the collision of blade and carousel.

Drawings

The invention is further described with reference to the following figures and examples.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the internal structure;

FIG. 3 is a partial schematic view of the structure;

Detailed Description

As shown in the figure: the energy recovery device for the water heater comprises a shell and an impeller, wherein a disc-shaped drainage cavity 1 is arranged in the shell, the shell is provided with a water inlet 2 and a water outlet 3 which are communicated with the drainage cavity, the impeller is arranged in the drainage cavity in a rotating fit manner, the impeller comprises a rotary table 4 and blades 5 circumferentially distributed on the outer circle of the rotary table, the blades are arranged on the outer circle of the rotary table in a manner of rotating along the circumferential direction of the rotary table, when the blades rotate along with the rotary table and exceed the water inlet, the blades are impacted by water flow to rotate and unfold, when the blades rotate along with the rotary table and exceed the water outlet, the blades rotate and are folded and attached to the outer circle of the rotary table, the bottom of each blade is provided with a diversion trench 6, the diversion trench extends to the root along the head of each blade, when the blades pass through the water inlet in a folded state, water flow flowing towards the head of the blades in the water inlet can flow into the diversion trench and exert pushing force for unfolding the blades on the bottom of the blades. In the embodiment, the up-down and left-right directions correspond to the directions in fig. 2, the meaning of eccentric installation is that the axis of the impeller is parallel to the axial direction of the drainage cavity and does not coincide with the axial direction of the drainage cavity, as shown in fig. 2, when the blade is unfolded, the blade extends in the radial direction approximately, wherein the impeller is installed in the drainage cavity through the rotating shaft, the rotating shaft penetrates through the shell to be in transmission fit with the rotor of an external generator, the external generator is driven by the impeller to generate electricity for recovering the energy of water flowing in a water heater pipeline, as shown in fig. 2, the blade can rotate along the circumferential direction of the turntable, when the blade reaches the maximum rotation angle, the blade rotates approximately to the radial direction of the turntable, when the blade is folded, the blade rotates anticlockwise and is attached to the excircle of the turntable, when the blade rotates clockwise along with the turntable under the folded state and exceeds the water inlet 2, water flow impacts the head of the blade and flows to the lower part of the blade through the diversion trench, promote the blade and expand, rivers promote blade and carousel clockwise rotation this moment, when the blade rotates and surpasss the delivery port, the blade is automatic folding, do benefit to through this structure and guide rivers impact carousel and rotate, but the rivers ability is retrieved to the efficient, through the folding of blade and expansion moreover, do benefit to the space that reduces the drainage chamber, improve the compact structure nature of whole device.

In this embodiment, the blade is including being cylindric base 5a and connecting in base excircle and the blade body 5b of outside extension, mounting groove 4a has been seted up to 4 excircles of carousel, base normal running fit installs in the mounting groove, the guiding gutter 6 is seted up in the blade body bottom. Combine fig. 3 to show, the base is cylindric, and the axis of base and the axial direction parallel of carousel, the base passes through the axis of rotation moreover and rotates and install in the mounting groove, and the position that the mounting groove is close to blade back is straight wall, blocks the further rotation of blade through this straight wall, and the mounting groove is close to the arc structure of the position of blade bottom for with the adaptation of blade bottom, does benefit to the installation of base through the mounting groove.

In this embodiment, the guiding groove extends from the head of the blade body to the back of the blade by extending backwards around the base. Combine fig. 2 to show, the guiding gutter extends to the back position of base always, and this structure makes rivers pass through the back that the guiding gutter can flow to the mounting groove, guarantees promptly that rivers have all the time between the back of blade and the back of mounting groove, at the blade expansion in-process for this water conservancy forms the buffering between blade back and the mounting groove back, prevents blade direct collision mounting groove.

In this embodiment, the carousel eccentric mounting is in the drainage intracavity to form the great choked flow passageway 7 that overflows of width between carousel excircle right side and the drainage intracavity circle, form the choked flow passageway 8 that the width is narrower between carousel excircle left side and the drainage intracavity circle, the width that overflows passageway 7 is greater than the size that radially surpasses carousel 4 excircle when the blade expandes, the width of choked flow passageway 8 is less than the size that radially surpasses carousel 4 excircle when the blade expandes. As shown in the combined figure 2, the width of the over-flow channel 7 is large, the over-flow channel is used for guiding water flow, the unfolding of the blades is facilitated, the size of the flow blocking channel 8 is small, the blades are enabled to rotate to the position, the blades are contacted with the inner wall of the drainage cavity and are pushed to rotate clockwise to be folded, meanwhile, the flow blocking channel with the small size is beneficial to forming damping force on the water flow, the water flow is convenient to discharge from a water outlet, in addition, the diversion trench is arranged, the blades are enabled to be folded, a water storage gap is formed between the bottom of each blade and the outer circle of the rotary table, the water body storage is facilitated, the buffering can be formed in the blade folding process, and the collision between the blades and the rotary table is avoided.

In this embodiment, a bottom buffer layer 9 is disposed in the mounting groove toward the bottom of the blade body. As shown in fig. 3, the bottom buffer layer may be a wear-resistant metal coating or may also be a rubber layer, and the bottom buffer layer prevents the blade body from rigidly colliding with the turntable when folded.

In this embodiment, a back cushion layer 10 is disposed in the mounting groove toward the back of the blade body. As shown in fig. 3, the back buffer layer may be a wear-resistant metal coating or may also be a rubber layer, and the back buffer layer prevents the blade body from rigidly colliding with the turntable when the blade body is unfolded.

In this embodiment, the water inlet 2 and the water outlet 3 are located on the upper and lower sides of the drainage cavity 1 and located in the same radial direction. Combine fig. 2 to show, the water inlet is seted up in the casing top, and the delivery port is seted up in the casing below, and wherein the water inlet inwards extends to the right crooked and drainage chamber intercommunication, and the delivery port is crooked and drainage chamber intercommunication right equally, combines to flow about the arrangement structure of passageway 7 and choked flow passageway 8 for rivers flow to overflowing in the passageway and through the delivery port discharge smoothly behind the water inlet.

In this embodiment, the casing includes an upper casing 11 and a lower casing 12, and the upper casing is sealed on the lower casing and encloses the drainage chamber 1. As shown in fig. 1, a seal ring is disposed between the upper casing and the lower casing, the upper casing and the lower casing are connected by a bolt, the upper casing and the lower casing are both of a plate-shaped structure, and a corresponding groove is formed in the inner side surface of the lower casing, so that the inner side surface of the upper casing is attached to the inner side surface of the lower casing and automatically surrounds into a drainage cavity and a water inlet and a water outlet.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. An energy recovery device for a water heater, characterized in that: including casing and impeller, discoid drainage chamber has in the casing, set up water inlet and delivery port with the drainage chamber intercommunication on the casing, impeller normal running fit installs in the drainage intracavity, the impeller includes that carousel and circumference distribute in the blade of carousel excircle, the blade is installed in carousel excircle department with the mode that can follow carousel circumferential direction, when the blade rotates along with the carousel and surpasses water inlet department, the blade is rotated by the water impact and is expanded, when the blade rotates along with the carousel and surpasses the delivery port, the blade rotates and folds to paste in carousel excircle department, and the guiding gutter has been seted up to the blade bottom, the guiding gutter extends to the root along blade head to when making the blade be fold condition process water inlet, the rivers that face blade head flow in the water inlet can flow to the guiding gutter and exert the driving force that makes the blade expand to the blade bottom.

2. The energy recovery device for a water heater according to claim 1, wherein: the blade is including being cylindric base and connecting in base excircle and the blade body of outside extension, the mounting groove has been seted up to the carousel excircle, base normal running fit installs in the mounting groove, the guiding gutter is seted up in blade body bottom.

3. The energy recovery device for a water heater according to claim 2, wherein: the guide groove extends backwards from the head of the blade body, bypasses the base and extends to the back of the blade.

4. The energy recovery device for a water heater according to claim 1, wherein: the turntable is eccentrically arranged in the drainage cavity, so that a flow passing channel with a large width is formed between the right side of the outer circle of the turntable and the inner circle of the drainage cavity, and a flow blocking channel with a narrow width is formed between the left side of the outer circle of the turntable and the inner circle of the drainage cavity, the width of the flow passing channel is larger than the size of the outer circle of the turntable when the blades are unfolded, and the width of the flow blocking channel is smaller than the size of the outer circle of the turntable when the blades are unfolded.

5. The energy recovery device for a water heater according to claim 2, wherein: and a bottom buffer layer is arranged in the mounting groove towards the bottom of the blade body.

6. The energy recovery device for a water heater according to claim 2, wherein: and a back buffer layer is arranged in the mounting groove towards the back of the blade body.

7. The energy recovery device for a water heater according to claim 4, wherein: the water inlet and the water outlet are positioned on the upper side and the lower side of the drainage cavity and positioned in the same radial direction.

8. The energy recovery device for a water heater according to claim 1, wherein: the casing includes upper housing and lower casing, the sealed lid of upper housing is on lower casing and encloses into the drainage chamber.