CN102853546B - Water heater and control method thereof - Google Patents
Water heater and control method thereof Download PDFInfo
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- CN102853546B CN102853546B CN201110183643.0A CN201110183643A CN102853546B CN 102853546 B CN102853546 B CN 102853546B CN 201110183643 A CN201110183643 A CN 201110183643A CN 102853546 B CN102853546 B CN 102853546B
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Abstract
The invention discloses a water heater and a control method thereof. The water heater comprises a water level switch group and a controller, wherein the water level switch is arranged inside a water tank of the water heater and comprises at least four water level switches at different heights; when the water heater is in operation, two water level switches of the at least four water level switches are in an on state, and the rest water level switches are in an off state; the controller is connected with the water level switch group and is used for judging whether the two water level switches in the on state have faults; and when any one water level switch in the on state has faults, the two water level switches in the on state are controlled by the controller to be off, and any two water level switches in the off state are controlled by the controller to be on. The water heater can be free from halt caused by the faults of the water level switches.
Description
Technical field
The present invention relates to hot water machine field, in particular to a kind of hot water machine and control method thereof.
Background technology
At present, due to air-source heat pump hot water water level switch long period of soaking in the hot water, easily break down, once water level switch breaks down, hot water machine is just shut down, and cannot remain in operation.
Easily there is the problem of shutting down for hot water machine in correlation technique because water level switch breaks down, not yet propose effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of hot water machine and control method thereof, to solve the problem that shutting down easily appears because water level switch breaks down in hot water machine in correlation technique.
To achieve these goals, according to an aspect of the present invention, a kind of hot water machine is provided.
Hot water machine according to the present invention comprises: water level switch group, be arranged in the water tank of hot water machine, comprise at least four water level switches being separately positioned on differing heights, when hot water machine works, two water level switches at least four water level switches are in opening, and all the other water level switches at least four water level switches are in closed condition; And controller, be connected with water level switch group, for judging whether two water level switches being in opening break down, when any one water level switch being in opening breaks down, two water level switches controlling to be in opening are closed, and any two water level switches simultaneously controlling to be in closed condition are opened.
Further, water level switch is used for sending into water signal according to the water level of water tank or stopping water inlet signal, water inlet signal is used to indicate the position of water level lower than water level switch of water tank, stops water inlet signal to be used to indicate the position of water level greater than or equal to water level switch of water tank; And controller is also for judging whether there is the water level switch broken down in water level switch according to water inlet signal and stopping water inlet signal.
Further, controller also for send into water signal when the first water level switch at least four water level switches and the second water level switch send stop water inlet signal time, judge that the first water level switch and/or the second water level switch break down, wherein, first water level switch and the second water level switch are in opening simultaneously, and the position of the first water level switch is lower than the position of the second water level switch.
Further, controller also for when the first water level switch send into water signal and the second water level switch send stop water inlet signal start timing, when exceeding preset time range signal duration, judge that the first water level switch and/or the second water level switch break down.
Further, controller also for according to water inlet signal and stopping water inlet signal, controls hot water machine water inlet or stops intaking.
Further, controller, also for when the 3rd water level switch at least four water level switches and the 4th water level switch send into water signal simultaneously, controls hot water machine water inlet; When the 3rd water level switch sends stopping water inlet signal and the 4th water level switch sends into water signal, control hot water machine water inlet; And when the 3rd water level switch and the 4th water level switch send simultaneously stop intaking signal time, control hot water machine and stop water inlet, wherein, the 3rd water level switch and the 4th switch are in opening simultaneously, and the position of the 3rd water level switch is lower than the position of the 4th water level switch.
Further, water level switch group comprises the 5th water level switch set gradually from low to high, 6th water level switch, 7th water level switch and the 8th water level switch, wherein, when the aquifer yield of hot water machine is 100% of the storing water in water tank amount of hot water machine, any one water level switch in the 5th water level switch, the 6th water level switch and the 7th water level switch and the 8th water level switch are in opening simultaneously; When the aquifer yield of hot water machine is 75% of the storing water in water tank amount of hot water machine, any one water level switch in the 5th water level switch or the 6th water level switch and the 7th water level switch are in opening simultaneously; And when the aquifer yield of hot water machine is 50% of the storing water in water tank amount of hot water machine, the 5th water level switch and the 6th water level switch are in opening simultaneously.
Further, water level switch group comprises the first float, the second float, the 3rd float and the 4th float that set gradually from low to high.
To achieve these goals, according to a further aspect in the invention, a kind of control method of hot water machine is provided.
Control method according to hot water machine of the present invention comprises: when in water level switch group, any two water level switches are in opening, judges whether two water level switches break down; When in two water level switches, any one water level switch breaks down, control two water level switches closedowns and control all the other any two water level switches unlatchings simultaneously, wherein, water level switch group is arranged in the water tank of hot water machine, and water level switch group comprises at least four water level switches being arranged on differing heights.
Further, when position lower than water level switch of the water level of water tank, water level switch sends into water signal, and when position greater than or equal to water level switch of the water level of water tank, water level switch sends and stops water inlet signal; And judge whether water level switch breaks down according to water inlet signal and stopping water inlet signal.
Further, when the first water level switch at least four water level switches sends into water signal and the second water level switch sends stopping water inlet signal, judge that the first water level switch and/or the second water level switch break down, wherein, first water level switch and the second water level switch are in opening simultaneously, and the position of the first water level switch is lower than the position of the second water level switch.
Further, when the first water level switch sends into water signal and the second water level switch sends stopping water inlet signal and exceeds preset time range, judge that the first water level switch and/or the second water level switch break down.
Further, according to water inlet signal and stopping water inlet signal, control hot water machine water inlet or stop intaking.
Further, when the 3rd water level switch at least four water level switches and the 4th water level switch send into water signal simultaneously, control hot water machine water inlet; When the 3rd water level switch sends stopping water inlet signal and the 4th water level switch sends into water signal, control hot water machine water inlet; And when the 3rd water level switch and the 4th water level switch send simultaneously stop intaking signal time, the water tank controlling hot water machine stops water inlet, wherein, the 3rd water level switch and the 4th switch are in opening simultaneously, and the position of the 3rd water level switch is lower than the position of the 4th water level switch.
Pass through the present invention, adopt the hot water machine comprised with lower part: water level switch group, be arranged in the water tank of hot water machine, comprise at least four water level switches being separately positioned on differing heights, when hot water machine works, two water level switches at least four water level switches are in opening, and all the other water level switches at least four water level switches are in closed condition; And controller; be connected with water level switch group; for judging whether two water level switches being in opening break down; when two water level switches being in opening break down; two water level switches controlling to be in opening are closed; any two water level switches simultaneously controlling to be in closed condition are opened; solve the problem that shutting down easily appears because water level switch breaks down in hot water machine in correlation technique, reach the effect preventing hot water machine from easily shutting down because water level switch breaks down.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram of the hot water machine according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the float of hot water machine according to the embodiment of the present invention;
Fig. 3 is the operational flow diagram of the hot water machine according to the embodiment of the present invention; And
Fig. 4 is the flow chart of the control method of hot water machine according to the embodiment of the present invention.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 is the block diagram of the hot water machine according to the embodiment of the present invention.As shown in Figure 1, this hot water machine comprises water level switch group 10, be arranged in the water tank of hot water machine, comprise at least four water level switches being separately positioned on differing heights, when hot water machine works, two water level switches at least four water level switches are in opening, and all the other water level switches at least four water level switches are in closed condition; And controller 20, be connected with water level switch group 10, for judging whether two water level switches being in opening break down, when in two water level switches being in opening, any one water level switch breaks down, two water level switches controlling to be in opening are closed, and any two water level switches simultaneously controlling to be in closed condition are opened.
By arranging the water level switch group 10 comprising multiple water level switch at hot water machine, hot water machine is made to enable alternative water level switch when water level switch breaks down; By arranging controller 20 at hot water machine; hot water machine is made automatically to open other water level switches when water level switch breaks down; therefore; adopt the hot water machine of this embodiment; unless all water level switches of water level switch group all break down; otherwise hot water machine there will not be the phenomenon of often shutting down because water level switch easily breaks down, make hot water machine not easily because of water level switch fault and shut down.
In addition, multiple water level switch is separately positioned on differing heights, when the water level switch opened is different, the moisture storage capacity of the water tank of hot water machine is different, and correspondingly, the heat time of hot water machine is also different, therefore, adopt the hot water machine of this embodiment, user can select different water level switches according to water requirement and heat time, makes user convenient when using hot water machine.
Preferably, water level switch is used for sending into water signal according to the water level of water tank or stopping water inlet signal, water inlet signal is used to indicate the position of water level lower than water level switch of water tank, stops water inlet signal to be used to indicate the position of water level greater than or equal to water level switch of water tank; And controller is also for judging whether there is the water level switch broken down in water level switch according to water inlet signal and stopping water inlet signal, and controls hot water machine water inlet or stop intaking.
Water level switch is actually a sensor, the water level of real-time detection water tank, and sending different signals according to water level from the position of water level switch, according in running order two signals that water level switch sends jointly, controller judges whether water level switch has problems and control hot water machine moisturizing.A water level switch in two in running order water level switches is positioned at high water level, a water level switch is positioned at middle water level, when central water level switch detects water level lower than its present position, then signal is reached controller, control water inlet intakes, when high water level switch detects water level higher than its present position, then control water inlet and stop water inlet.
In the middle of water level switch send into water signal and high water level switch send stop water inlet signal time, to the eye, represent that the water level of water tank is lower than middle water level and higher than high water level, in fact, this phenomenon can not exist, and controller just can judge the water level switch that there is damage in two water level switches; When middle water level switch and high water level switch send into water signal simultaneously, represent that the water level of water tank is lower than middle water level, hot water machine needs water inlet; In the middle of water level switch send and stop water inlet signal and high water level switch when sending into water signal, represent that the water level of water tank is higher than middle water level but lower than high water level, hot water machine is intake; And central water level switch and high water level switch send when stopping intaking signal simultaneously, represent that the water level of water tank is higher than high water level, hot water machine need stop water inlet.The signal sent by water level switch judges whether hot water machine breaks down, in real time accurately.
Preferably, for the erroneous judgement preventing the error signal due to water level switch from causing controller, in the middle of water level switch send into water signal and high water level switch send stop water inlet signal start timing, when exceeding preset time range signal duration, controller just judges have fault water level switch to exist in two water level switches, when water level switch accidentally sends error signal due to time delay or other reasons, controller does not determine fault immediately.Error signal is inevitable to disappear within a period of time, so controller does not do the conversion of water level switch, still adopts current water level switch to run.
Fig. 2 is the schematic diagram of the water-level float of hot water machine according to the embodiment of the present invention, as shown in the figure, is provided with the first float, the second float, the 3rd float and the 4th float four water level positions from low to high respectively.When the aquifer yield of hot water machine is 100% of the storing water in water tank amount of hot water machine, any one float in the first float, the second float and the 3rd float and the 4th float are in opening simultaneously; When the aquifer yield of hot water machine is 75% of the storing water in water tank amount of hot water machine, any one float in the first float or the second float and the 3rd float are in opening simultaneously; And when the aquifer yield of hot water machine is 50% of the storing water in water tank amount of hot water machine, first float and the second float are in opening simultaneously, select the water level pattern that different floats is corresponding different, as shown in the table, adopt 4 sections of water level switches, two floats are one group of water level pattern, can set arbitrarily 6 kinds of patterns, be respectively 1., 2., 3., 4., 5., 6., 2. default period is.Middle water level is that unit starts directly-heated moisturizing, and high water level is for stopping moisturizing, and namely high water level is final aquifer yield.
3 pairs of water level patterns in correspondence with each other:
when running on pattern water-level float 1. and breaking down, be converted to pattern 6.; When running on pattern water-level float 2. and breaking down, be converted to pattern 5.; When running on pattern water-level float 3. and breaking down, be converted to pattern 3..
If be ON by water inlet signal definition, when stopping water inlet signal definition to be OFF: when detecting that high water level signal is OFF, when middle water level signal is ON, controller just can judge that water level switch breaks down; When high water level signal is ON, when middle water level signal is OFF, represent that water tank is in into water state; When high water level signal is OFF, when middle water level signal is OFF, represent the water having contained demand in water tank; When being ON, represent that quantity of water in water tank is very few, need to start moisturizing.
Fig. 3 is the operational flow diagram of the hot water machine according to the embodiment of the present invention, and as shown in Figure 3, compressor emergency shutdown after water level fault (that is: high water level OFF and middle water level ON) being detected, judges by following:
If water level fault recovery is normal in A 10min, then unit still runs by former designated water level mode detection;
If water level fault does not recover normal in B 10min, then water level pattern is converted to corresponding water level pattern automatically, and unit detects operation again.
Particularly, if arranging water level pattern is that 2. unit normally runs; When detecting that the 4th float (high water level) is OFF signal, and the second float (middle water level) is ON signal, then unit report water level abnormality fault; If water level switch is still abnormal in 10min, then 5. 2. water level pattern proceed to corresponding water level pattern, and unit again detects the 3rd float (high water level) and the first float (middle water level) runs; If water level switch recovers normal in 10min, then 2. the water level pattern still detecting current setting is run.Adopt the hot water machine of this embodiment, after unit detects water level fault, avoid the situation of directly shutting down, but by adaptive process, the water level pattern making unit detect correspondence continues the operation keeping unit, meets user and uses water requirement.Preferably, can manual designated water level pattern, carry out the setting of demand aquifer yield, thus 2 water-level floats of namely having given a piece of bad advice, still manually can set available water level pattern, ensure that the water heating of unit runs.
To achieve these goals, according to a further aspect in the invention, a kind of control method of hot water machine is provided.
Fig. 4 is the flow chart of the control method of hot water machine according to the embodiment of the present invention, as shown in Figure 4, comprises step S102 to S110 according to the control method of hot water machine of the present invention.
Step S102, selects unlatching two water level switches.First in water level switch group, select any two water level switches to be in opening, hot water machine runs, and water level switch group is arranged in the water tank of hot water machine, and water level switch group comprises at least four water level switches being arranged on differing heights.
Step S104, judges whether two water level switches break down.In the process that hot water machine runs, detect two water level switches in real time and whether break down, when two water level switches break down, perform step S106, otherwise perform step S108.
Step S106, controls two water level switches and closes.Break down once detect two water level switches, two water level switches are closed.
The method of detection failure comprises: when position lower than water level switch of the water level of water tank, water level switch sends into water signal, when position greater than or equal to water level switch of the water level of water tank, water level switch sends and stops water inlet signal, judges whether water level switch breaks down according to water inlet signal and stopping water inlet signal.
Particularly, open two water level switches one and be in middle water level, another is in high water level, central water level switch send into water signal and high water level switch send stop water inlet signal time, judge water level switch break down.Preferably, when fault continues Preset Time, then two water level switches are closed, erroneous judgement can not be made due to the error signal of water level switch to fault, fault be determined more accurate.
Step S108, controls hot water machine moisturizing or stops moisturizing.When two water level switches normally work, control hot water machine moisturizing or stop moisturizing.
Control hot water machine moisturizing or stop the method for moisturizing to comprise: further, when central water level switch and high water level switch send into water signal simultaneously, control hot water machine water inlet; In the middle of water level switch send and stop water inlet signal and high water level switch when sending into water signal, control hot water machine water inlet; And central water level switch and high water level switch send when stopping intaking signal simultaneously, the water tank controlling hot water machine stops water inlet.
Step S110, controls all the other any two water level switches and opens.After judgement two water level switches break down, closed, and then opened all the other any two water level switches, ensured that hot water machine can not be shut down due to water level switch fault, continue to rely on remaining water level switch to run.
Adopt the control method of the hot water machine of this embodiment, the running status of hot water machine middle water level switch can be detected in real time, when water level switch normal operation, control hot water machine moisturizing according to its water level signal sent or stop moisturizing; When water level switch operation exception, without the need to shutting down, only the water level switch of fault being closed, opening other any two water level switches, make hot water machine easily to send out fault due to water level switch and often to shut down.
From above description; can find out; the hot water machine of the embodiment of the present invention achieves following technique effect: adopt comprise multiple water level switch water level switch group; hot water machine is not shut down when water level switch breaks down; but the water level switch of closing fault, automatically open other water level switch simultaneously.Therefore, unless all water level switches of water level switch group all break down, otherwise hot water machine there will not be the phenomenon of often shutting down because water level switch easily breaks down, and hot water machine is not easily shut down.In addition, multiple water level switch is separately positioned on differing heights, makes user convenient when using hot water machine.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. a hot water machine, is characterized in that, comprising:
Water level switch group, be arranged in the water tank of described hot water machine, comprise at least four water level switches being separately positioned on differing heights, when described hot water machine work, two water level switches in described at least four water level switches are in opening, and all the other water level switches in described at least four water level switches are in closed condition; And
Controller, be connected with described water level switch group, for judging whether two water level switches being in opening break down, when described any one water level switch being in opening breaks down, the water level switch being in opening described in control is closed, and any two water level switches simultaneously controlling to be in closed condition are opened.
2. hot water machine according to claim 1, is characterized in that,
Be in the water level switch of opening for sending according to the water level of described water tank into water signal or stopping water inlet signal, described water inlet signal is used to indicate the position of water level lower than described water level switch of described water tank, and described stopping water inlet signal is used to indicate the position of water level greater than or equal to described water level switch of described water tank; And
Described controller is also for judging whether there is the water level switch broken down in described water level switch according to described water inlet signal and described stopping water inlet signal.
3. hot water machine according to claim 2, is characterized in that,
Described controller also for send into water signal when the first water level switch in described at least four water level switches and the second water level switch send stop water inlet signal time, judge that described first water level switch and/or described second water level switch break down, wherein, described first water level switch and described second water level switch are in opening simultaneously, and the position of described first water level switch is lower than the position of described second water level switch.
4. hot water machine according to claim 3, is characterized in that,
Described controller also for when described first water level switch send into water signal and described second water level switch send stop water inlet signal start timing, when exceeding preset time range signal duration, judge that described first water level switch and/or described second water level switch break down.
5. hot water machine according to claim 2, is characterized in that, described controller also for according to described water inlet signal and described stopping water inlet signal, controls the water inlet of described hot water machine or stops water inlet.
6. hot water machine according to claim 5, is characterized in that, described controller also for:
When the 3rd water level switch in described at least four water level switches and the 4th water level switch send into water signal simultaneously, control the water inlet of described hot water machine;
When described 3rd water level switch sends stopping water inlet signal and described 4th water level switch sends into water signal, control the water inlet of described hot water machine; And
When described 3rd water level switch and described 4th water level switch send simultaneously stop intaking signal time, control described hot water machine stop water inlet,
Wherein, described 3rd water level switch and described 4th water level switch are in opening simultaneously, and the position of described 3rd water level switch is lower than the position of described 4th water level switch.
7. hot water machine according to claim 1, is characterized in that, described water level switch group comprises the 5th water level switch set gradually from low to high, the 6th water level switch, the 7th water level switch and the 8th water level switch, wherein,
When the aquifer yield of described hot water machine is 100% of the storing water in water tank amount of described hot water machine, any one water level switch in described 5th water level switch, described 6th water level switch and described 7th water level switch and described 8th water level switch are in opening simultaneously;
When the aquifer yield of described hot water machine is 75% of the storing water in water tank amount of described hot water machine, any one water level switch in described 5th water level switch or described 6th water level switch and described 7th water level switch are in opening simultaneously; And
When the aquifer yield of described hot water machine is 50% of the storing water in water tank amount of described hot water machine, described 5th water level switch and described 6th water level switch are in opening simultaneously.
8. hot water machine according to claim 1, is characterized in that, described water level switch group comprises the first float, the second float, the 3rd float and the 4th float that set gradually from low to high.
9. a control method for hot water machine, is characterized in that, comprising:
When any two water level switches are in opening in water level switch group, judge whether described two water level switches break down;
When in described two water level switches, any one water level switch breaks down, control described two water level switches closedown and control all the other any two water level switches unlatchings simultaneously, wherein, described water level switch group is arranged in the water tank of described hot water machine, and described water level switch group comprises at least four water level switches being arranged on differing heights.
10. the control method of hot water machine according to claim 9, is characterized in that,
When position lower than described water level switch of the water level of described water tank, described water level switch sends into water signal, and when position greater than or equal to described water level switch of the water level of described water tank, described water level switch sends and stops water inlet signal; And
Judge whether described water level switch breaks down according to described water inlet signal and described stopping water inlet signal.
The control method of 11. hot water machines according to claim 10, is characterized in that,
When the first water level switch in described at least four water level switches sends into water signal and the second water level switch sends stopping water inlet signal, judge that described first water level switch and/or described second water level switch break down, wherein, described first water level switch and described second water level switch are in opening simultaneously, and the position of described first water level switch is lower than the position of described second water level switch.
The control method of 12. hot water machines according to claim 11, is characterized in that,
When described first water level switch sends into water signal and described second water level switch sends stopping water inlet signal and exceeds preset time range, judge that described first water level switch and/or described second water level switch break down.
The control method of 13. hot water machines according to claim 10, is characterized in that,
According to described water inlet signal and described stopping water inlet signal, control the water inlet of described hot water machine or stop water inlet.
The control method of 14. hot water machines according to claim 13, is characterized in that,
When the 3rd water level switch in described at least four water level switches and the 4th water level switch send into water signal simultaneously, control the water inlet of described hot water machine;
When described 3rd water level switch sends stopping water inlet signal and described 4th water level switch sends into water signal, control the water inlet of described hot water machine; And
When described 3rd water level switch and described 4th water level switch send simultaneously stop intaking signal time, control described hot water machine water tank stop water inlet,
Wherein, described 3rd water level switch and described 4th water level switch are in opening simultaneously, and the position of described 3rd water level switch is lower than the position of described 4th water level switch.
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| CN104061686A (en) * | 2013-03-22 | 2014-09-24 | 广东美的暖通设备有限公司 | Water heater and control method thereof |
| CN104655234A (en) * | 2013-11-25 | 2015-05-27 | 珠海格力电器股份有限公司 | Water level detecting and treating method and device for water heater and water heater |
| CN105004063B (en) * | 2015-07-21 | 2019-06-04 | 珠海格力电器股份有限公司 | The method, apparatus and hot water machine of moisturizing control |
| CN106196619A (en) * | 2016-06-29 | 2016-12-07 | 宁波奥克斯电气股份有限公司 | Hot water machine water level control method of water tank |
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| CN101799692A (en) * | 2010-04-14 | 2010-08-11 | 宁波市镇海华泰电器厂 | Water level control method and device for control signal acquired from earth |
| CN202141205U (en) * | 2011-07-01 | 2012-02-08 | 珠海格力电器股份有限公司 | Water heater |
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