CN108709320A - Impeller, water flow switch, heat exchanger and air energy heat pump water heater - Google Patents
Impeller, water flow switch, heat exchanger and air energy heat pump water heater Download PDFInfo
- Publication number
- CN108709320A CN108709320A CN201810365704.7A CN201810365704A CN108709320A CN 108709320 A CN108709320 A CN 108709320A CN 201810365704 A CN201810365704 A CN 201810365704A CN 108709320 A CN108709320 A CN 108709320A
- Authority
- CN
- China
- Prior art keywords
- water flow
- impeller
- blade
- flow switch
- flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 230000008014 freezing Effects 0.000 description 4
- 238000007710 freezing Methods 0.000 description 4
- 230000009172 bursting Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses an impeller, a water flow switch, a heat exchanger and an air energy heat pump water heater, wherein the impeller capable of accurately detecting the flow of a pipeline comprises a hub and blades, and the side edges of the blades connected with the hub are crossed with the plain lines of the outer circumferential surface of the hub. The impeller can accurately detect the flow in the pipeline, so that the action of the corresponding water flow switch is more accurate, and the safety of the heat exchanger and the whole air energy heat pump water heater is protected.
Description
Technical field
The present invention relates to piping flow detection technique more particularly to a kind of impellers that can accurately detect piping flow, make
With water flow switch, heat exchanger and the air source heat pump water heater of the impeller.
Background technology
With the continuous breakthrough and innovation of heat pump techniques, the use of the heat exchangers such as casing and package increasingly increases.In northern coal
Change electric market to widely popularize down, heat pump product has welcome opportunity, but also brings huge choose to heat pump unit in cold winter
War.Core component one of of the heat exchanger as unit plays a crucial role, but when temperature is too low, heat exchanger bursting by freezing
As one of the reason of unit damage or complete machine are scrapped when low temperature, and water flow deficiency is to cause the main original of heat exchanger bursting by freezing
Cause.Because water freezes in pipe, heat exchanger is easy to be split up, and heat exchanger damage causes water route to be communicated with fluorine road；The machine run at this time
Water may be sucked compressor by group, and compressor damage, evaporator is caused to be split up into water freezing, to which entire unit can be scrapped.
And water flow switch used by existing heat exchanger can not accurately detect water flow, when water flow reaches requirement
It is easy to be failure to actuate, or is malfunctioned when not up to requiring, such as in the existing patent of Publication No. CN202394809U,
It discloses a kind of middle water guide type pulse water switch, uses vane type structure, and straight piece blade is parallel with hub axis, it
It will appear the situation that top and the bottom stress is consistent, impeller is motionless in some special cases, reach requirement so as to cause water flow,
And flow switch the problem of being failure to actuate.
Invention content
In order to solve drawbacks described above existing in the prior art, the present invention proposes a kind of leaf that can accurately detect piping flow
Wheel, including wheel hub and blade, the side that the blade is connect with wheel hub and the plain line of the wheel hub outer circumference surface intersect.
In a preferred embodiment, the blade is curved surface bucket, such as in two blade propeller shape.In another embodiment
In, the blade is plane blade.
In the technical scheme, the plain line is straight line or circular arc line.
The invention also provides water flow switches made of the impeller used in above-mentioned technical proposal, including：With the leaf
The impeller is fixed on the holder in waterway pipe by the hub rotation connection of wheel, rack-mount for detecting the impeller
The velocity sensor of rotating speed judges whether water flow meets the control mould of target water flow according to the signal of the velocity sensor
Block.
Preferably, the caliber of the waterway pipe is constant.At this point, whether the rotating speed of the control module comparison impeller is more than
Pre-set velocity judges whether current water flow meets target water flow.Alternatively, in another embodiment, the control module can
According to the current water flow of the PIPE DIAMETER CALCULATION of wheel speed and waterway pipe, to compare the current water flow and target water flow
To determine whether meeting target water flow.
The invention also provides the heat exchangers and air source heat pump water heater that use above-mentioned water flow switch.
The present invention allows impeller to be accurately detected the flow in pipeline by improvement blade wheel structure, corresponding to make
Water flow switchs the numerical value that can accurately measure water flow in water route, avoids flow water flow switch when reaching requirement motionless
Make, is malfunctioned when water flow switch being avoided not up to require and water flow deficiency in heat exchanger is caused to cause heat exchanger bursting by freezing, to protect
Protect the safety of heat exchanger and complete machine.
Description of the drawings
With reference to embodiment and attached drawing, the present invention is described in detail, wherein：
Fig. 1 is the stereogram of impeller of the present invention；
Fig. 2 is the front view of impeller of the present invention；
Fig. 3 is the water flow switch structure diagram of the present invention；
Fig. 4 is the fundamental diagram of water flow switch of the present invention.
Specific implementation mode
Fig. 1, Fig. 2 shows be impeller of the present invention a preferred embodiment, which includes that wheel hub 11 and interval are uniform
Ground surrounds the more blades 12 of circumference of hub face setting, in order to avoid under special circumstances, upper and lower blade is easy in the prior art
The problem of by consistent active force, the present invention are set side that blade 12 is connect with wheel hub 11 is not parallel with the shaft of wheel hub
It sets, but intersects with the plain line of wheel hub outer circumference surface, i.e., sideling place.In preferred embodiment shown in figure, blade 12
Shape also uses two blade propeller shape, which can make wheel rotation as long as having water, can signal piping be accurately
It is no to have flow.Those skilled in the art can be designed to other conventional curved surface buckets with the shape of blade 12, make its installation side
Side and the plain line of wheel hub outer circumference surface intersect, and there may be motionless situations when avoiding water impact.
In another embodiment, blade can also use the plane blade sideling put, and can also reach identical effect.
In the above-described embodiments, it may be circular arc line that the plain line of the outer circumference surface of wheel hub 11, which can be straight line, work as wheel hub
Plain line when being straight line, the main body of wheel hub is cylinder, when the plain line of wheel hub is circular arc line, applies 1 main body for showing wheel hub
One specific embodiment of shape.
As shown in Figure 3, Figure 4, the present invention is also protected using water flow switch made of above-mentioned impeller, by impeller 1 come accurate
The really water flow in detection pipeline so that water flow switch can be acted more accurately.Water flow switch includes impeller
1, holder 2, velocity sensor and control module 3.Holder 2 and the axis at the wheel hub both ends of impeller 1 are rotatablely connected, and impeller 1 is fixed
In waterway pipe, the rack-mount bearing of velocity sensor（It is not shown in figure）, for detecting the rotating speed of impeller 1,
Control module 3 is electrically connected with the velocity sensor, and the speed of the impeller 1 detected according to velocity sensor is to judge water flow
It is no to meet target water flow.When water slug impeller can accurately measure the rotating speed of impeller 1, so that it is determined that the flow velocity of flow, according to
The caliber of waterway pipe can learn the determining value of water flow, calculated by control module 3, whether can learn current water flow
Above or below target water flow, the concrete numerical value of current water flow can be exported.Due to the output valve of water flow be not must
It need obtain, therefore a this impeller when setting flow A can have been measured by experiment when the caliber of waterway pipe is constant
Rotating speed B, it is only necessary to rotating speed is more than this rotating speed B it can be learnt that current water flow has met target water flow.
The present invention also protects the heat exchanger for using above-mentioned water flow switch, in specific application, the control of water flow switch
When molding block judges that current water flow is less than target water flow, current water flow can be exported and remind water flow insufficient, at this time
Unit is unsatisfactory for starting and require, and unit cannot start；When water flow is more than or equal to target water flow, current water flow is exported,
Unit meets water flow requirement at this time.When caliber is constant, control module only needs to judge whether the current rotating speed of impeller meets
Preset speed meets compressor start up condition at this time if being greater than pre-set velocity, only need to export on-off model.If small
In pre-set velocity, then it is unsatisfactory for compressor start up condition, water flow can be reminded insufficient, water flow switch malfunction can thus be avoided to make machine
Group can not be switched on normal boot-strap or when water flow deficiency, and water in unit pipe is caused to freeze to be split up heat exchanger.
Equally also protection uses the air source heat pump water heater that above-mentioned water flow switchs to the present invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (11)
1. a kind of impeller that can accurately detect piping flow, including wheel hub and blade, which is characterized in that the blade connects with wheel hub
The side connect and the plain line of the wheel hub outer circumference surface intersect.
2. can accurately detect the impeller of piping flow as described in claim 1, which is characterized in that the blade is curved surface leaf
Piece.
3. can accurately detect the impeller of piping flow as claimed in claim 2, which is characterized in that the blade is in double leaf spiral
Paddle.
4. can accurately detect the impeller of piping flow as described in claim 1, which is characterized in that the blade is plane leaf
Piece.
5. can accurately detect the impeller of piping flow as described in claim 1, which is characterized in that the element line is straight line or circle
Camber line.
6. using water flow switch made of the impeller described in above-mentioned any one claim, including：With the wheel of the impeller
The impeller is fixed on the holder in waterway pipe by hub rotation connection, rack-mount for detecting the wheel speed
Velocity sensor judges whether water flow meets the control module of target water flow according to the signal of the velocity sensor.
7. water flow switch as claimed in claim 6, which is characterized in that the caliber of the waterway pipe is constant.
8. water flow switch as claimed in claim 7, which is characterized in that whether the rotating speed of the control module comparison impeller is big
Judge whether current water flow meets target water flow in pre-set velocity.
9. water flow switch as claimed in claim 6, which is characterized in that the control module is according to wheel speed and water route
The current water flow of PIPE DIAMETER CALCULATION of pipeline compares the current water flow with target water flow to determine whether meeting target flow
Amount.
10. using the heat exchanger of water flow switch as claimed in claim 6.
11. using the air source heat pump water heater of water flow switch as claimed in claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810365704.7A CN108709320A (en) | 2018-04-23 | 2018-04-23 | Impeller, water flow switch, heat exchanger and air energy heat pump water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810365704.7A CN108709320A (en) | 2018-04-23 | 2018-04-23 | Impeller, water flow switch, heat exchanger and air energy heat pump water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108709320A true CN108709320A (en) | 2018-10-26 |
Family
ID=63866859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810365704.7A Pending CN108709320A (en) | 2018-04-23 | 2018-04-23 | Impeller, water flow switch, heat exchanger and air energy heat pump water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108709320A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019001529A1 (en) * | 2019-03-07 | 2020-09-10 | Stiebel Eltron Gmbh & Co. Kg | Bearing component for flow sensor, flow measuring unit and building technology device |
-
2018
- 2018-04-23 CN CN201810365704.7A patent/CN108709320A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019001529A1 (en) * | 2019-03-07 | 2020-09-10 | Stiebel Eltron Gmbh & Co. Kg | Bearing component for flow sensor, flow measuring unit and building technology device |
| US12235017B2 (en) | 2019-03-07 | 2025-02-25 | Stiebel Eltron Gmbh & Co. Kg | Bearing component for flow sensor, flow metering unit and domestic appliance |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181026 |