CN105201806A - Control method and system for heat recovery water pump - Google Patents
Control method and system for heat recovery water pump Download PDFInfo
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- CN105201806A CN105201806A CN201510673392.2A CN201510673392A CN105201806A CN 105201806 A CN105201806 A CN 105201806A CN 201510673392 A CN201510673392 A CN 201510673392A CN 105201806 A CN105201806 A CN 105201806A
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- 238000011084 recovery Methods 0.000 title claims abstract description 399
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 374
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 claims description 19
- 238000012423 maintenance Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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Abstract
The invention discloses a control method of a heat recovery water pump, which comprises the following steps: detecting the temperature of the heat recovery water tank; when the temperature of the heat recovery water tank is less than or equal to a first preset value, whether the compressor is started within first preset time is judged, if yes, then: generating a first control instruction, and controlling the heat recovery water pump to keep a closing state according to the first control instruction; if not, then: and generating a second control instruction, and starting the heat recovery water pump according to the second control instruction. The invention can comprehensively control the heat recovery water pump through the starting time of the compressor and the temperature of the heat recovery water tank, thereby improving the effectiveness of the heat recovery water pump control, and further improving the operation reliability and the service life of the unit. The invention also discloses a heat recovery water pump control system.
Description
Technical field
The present invention relates to heat recovery water pump technical field, particularly relate to a kind of heat recovery water method for controlling pump and system.
Background technique
At present, the start and stop of the heat recovery water pump in part heat recovery Screw chiller control according to heat recovery water tank temperature, namely under reheating reclaims functional mode unlatching, when water tank temperature is lower than a certain setting value, open heat recovery water pump, when water tank temperature is higher than a certain setting value, close heat recovery water pump.
But from practical application, on the impact of system comparatively greatly, the main impact by heat recovery entering water temp is larger for heat recovery water pump and compressor opening time order.Great many of experiments shows; when heat recovery entering water temp is lower; if machine set compressor is first opened; open after heat recovery water pump, after heat recovery is opened, because entering water temp is lower; a large amount of condensed fluid can be produced in heat recovering device and enter condenser formation double evaporation-cooling; thus affecting the normal control of throttling arrangement, vaporizer feed flow can be caused not enough, and low pressure reduces final generation low-voltage variation fault fast.And when heat recovery entering water temp is relatively high, the condensation effect in heat recovering device is not strong.Therefore, how heat recovery water pump is control effectively, and then promote the operational reliability of unit and working life is a problem demanding prompt solution.
Summary of the invention
The invention provides a kind of heat recovery water method for controlling pump, by opening time of compressor with heat recovery water tank is temperature integrated controls heat recovery water pump, improve the validity that heat recovery water pump controls, and then improve operational reliability and the working life of unit.
The invention provides a kind of heat recovery water method for controlling pump, comprising:
Detect the temperature of heat recovery water tank;
When the temperature of described heat recovery water tank is less than or equal to the first predefined value, judge whether compressor is opened in the first Preset Time, if so, then: generate the first control command, and control heat recovery water pump maintenance closed condition according to described first control command; If not, then:
Generate the second control command, and open described heat recovery water pump according to described second control command.
Preferably, when the temperature of described heat recovery water tank is greater than described first predefined value, judge whether the temperature of described heat recovery water tank is less than or equal to the second predefined value, if so, then:
Judge whether the opening time of described compressor is greater than the second Preset Time, if so, then: generate the 3rd control command, and open described heat recovery water pump according to described 3rd control command; If not, then:
Generate the 4th control command, and control described heat recovery water pump maintenance closed condition according to described 4th control command.
Preferably, when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value;
Generate the 5th control command, and close described heat recovery water pump according to described 5th control command.
Preferably, described method also comprises:
Judge whether described compressor closes, if so, then:
Generate the 6th control command, and close described heat recovery water pump according to described 6th control command.
Preferably, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judge whether the opening time of described compressor is greater than the second Preset Time, if so, then:
Whether in the 3rd preset time period, detect heat recovery water switch is become closed from disconnection, if so, then:
Generate the 7th control command, and open described heat recovery water pump according to described 7th control command.
A kind of heat recovery water pump control system, comprising:
First detection unit, for detecting the temperature of heat recovery water tank;
First judging unit, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time;
First generation unit, for when judging that compressor is opened in the first Preset Time, generates the first control command;
First control unit, keeps closed condition for controlling heat recovery water pump according to described first control command;
Second generation unit, for when judging that compressor is not opened in the first Preset Time, generates the second control command;
Second control unit, for opening described heat recovery water pump according to described second control command.
Preferably, described system also comprises:
Second judging unit, for when the temperature of described heat recovery water tank is greater than described first predefined value, judges whether the temperature of described heat recovery water tank is less than or equal to the second predefined value;
3rd judging unit, for when judging that the temperature of described heat recovery water tank is less than or equal to the second predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
3rd generation unit, for when judging that the opening time of described compressor is greater than the second Preset Time, generates the 3rd control command;
3rd control unit, for opening described heat recovery water pump according to described 3rd control command;
4th generation unit, for when judging that the opening time of described compressor is less than or equal to the second Preset Time, generates the 4th control command;
4th control unit, keeps closed condition for controlling described heat recovery water pump according to described 4th control command.
Preferably, described system also comprises:
5th generation unit, for when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value, generates the 5th control command;
5th control unit, for closing described heat recovery water pump according to described 5th control command.
Preferably, described system also comprises:
4th judging unit, for judging whether described compressor closes;
6th generation unit, for when judging that described compressor cuts out, generates the 6th control command;
6th control unit, for closing described heat recovery water pump according to described 6th control command.
Preferably, described system also comprises:
5th judging unit, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
Whether the second detection unit, for when judging that the opening time of described compressor is greater than the second Preset Time, detecting heat recovery water switch and being become from disconnection closed in the 3rd preset time period;
7th generation unit, for when detecting heat recovery water switch and become closed from disconnection in the 3rd preset time period, generates the 7th control command;
7th control unit, for opening described heat recovery water pump according to described 7th control command.
From such scheme, a kind of heat recovery water method for controlling pump provided by the invention, first by detecting the temperature of heat recovery water tank, when the temperature of heat recovery water tank is less than or equal to the first default predefined value, continue to judge whether open at the first Preset Time inner compressor, when judging that compressor is opened in the first Preset Time, controlling heat recovery water pump and keeping closed condition, when judging that compressor is not opened in the first Preset Time, then open heat recovery water pump.In whole control procedure, considered the temperature of heat recovery water tank and the opening time of compressor, more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The flow chart of Fig. 1 a kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention;
The flow chart of Fig. 2 another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention;
The flow chart of Fig. 3 another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention;
The flow chart of Fig. 4 another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention;
The structural representation of Fig. 5 a kind of heat recovery water pump control system disclosed in the embodiment of the present invention;
The structural representation of Fig. 6 another kind of heat recovery water pump control system disclosed in the embodiment of the present invention;
The structural representation of Fig. 7 another kind of heat recovery water pump control system disclosed in the embodiment of the present invention;
The structural representation of Fig. 8 another kind of heat recovery water pump control system disclosed in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technological scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, a kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention, comprising:
The temperature of S101, detection heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first the temperature of the heat recovery water tank in heat recovery Screw chiller being detected, getting the real time temperature of heat recovery water tank.
S102, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time, if so, then enters step S103, if not, then enter step S104:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, judge whether the compressor in heat recovery Screw chiller is opened in the first Preset Time, the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
S103, generate the first control command, and control heat recovery water pump according to described first control command and keep closed condition;
When judging that compressor has been in opening state in the first Preset Time, generating the first control command, controlling heat recovery water pump and keeping closed condition, namely control heat recovery water pump and be in idle state.
S104, generate the second control command, and open described heat recovery water pump according to described second control command.
When judging that compressor is not also opened in the first Preset Time, generating the second control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
In the above-described embodiments, first by detecting the temperature of heat recovery water tank, when the temperature of heat recovery water tank is less than or equal to the first default predefined value, continue to judge whether open at the first Preset Time inner compressor, when judging that compressor is opened in the first Preset Time, controlling heat recovery water pump and keep closed condition, when judging that compressor is not opened in the first Preset Time, then opening heat recovery water pump.In whole control procedure; the temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 2, another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention, comprising:
The temperature of S201, detection heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first the temperature of the heat recovery water tank in heat recovery Screw chiller being detected, getting the real time temperature of heat recovery water tank.
S202, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time, if so, then enters step S203, if not, then enter step S204:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the temperature of having a try of the heat recovery water tank got is less than or equal to the first predefined value, judge whether the compressor in heat recovery Screw chiller is opened in the first Preset Time, the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
S203, generate the first control command, and control heat recovery water pump according to described first control command and keep closed condition;
When judging that compressor has been in opening state in the first Preset Time, generating the first control command, controlling heat recovery water pump and keeping closed condition, namely control heat recovery water pump and be in idle state.
S204, generate the second control command, and open described heat recovery water pump according to described second control command.
When judging that compressor is not also opened in the first Preset Time, generating the second control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
S205, when the temperature of described heat recovery water tank is greater than described first predefined value, judge whether the temperature of described heat recovery water tank is less than or equal to the second predefined value, if so, then enters step 206:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is greater than the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is greater than the first predefined value, judge whether the temperature of heat recovery water tank is less than or equal to the second predefined value, the second described predefined value is the temperature value preset according to heat recovery water pump demand for control, wherein, the second predefined value is greater than the first predefined value.
S206, judge whether the opening time of described compressor is greater than the second Preset Time, if so, then enters step 207, if not, then enters step 208:
When judge the real time temperature of heat recovery water tank be greater than the first predefined value be less than or equal to the second predefined value time, judge whether the opening time of compressor is greater than the second Preset Time, namely judge whether the operating time of compressor is greater than the second Preset Time, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
S207, generation the 3rd control command, and open described heat recovery water pump according to described 3rd control command;
When judging that the operating time of compressor has been greater than the second Preset Time, generating the 3rd control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
S208, generation the 4th control command, and control described heat recovery water pump maintenance closed condition according to described 4th control command.
When judging that the operating time of compressor is less than or equal to the second Preset Time, generating the 4th control command, controlling heat recovery water pump and keeping closed condition, namely control heat recovery water pump and be in idle state.
In the above-described embodiments; in whole control procedure; the real time temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 3, another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention, comprising:
The temperature of S301, detection heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first the temperature of the heat recovery water tank in heat recovery Screw chiller being detected, getting the real time temperature of heat recovery water tank.
S302, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time, if so, then enters step S303, if not, then enter step S304:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the temperature of having a try of the heat recovery water tank got is less than or equal to the first predefined value, judge whether the compressor in heat recovery Screw chiller is opened in the first Preset Time, the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
S303, generate the first control command, and control heat recovery water pump according to described first control command and keep closed condition;
When judging that compressor has been in opening state in the first Preset Time, generating the first control command, controlling heat recovery water pump and keeping closed condition, namely control heat recovery water pump and be in idle state.
S304, generate the second control command, and open described heat recovery water pump according to described second control command.
When judging that compressor is not also opened in the first Preset Time, generating the second control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
S305, when the temperature of described heat recovery water tank is greater than described first predefined value, judge whether the temperature of described heat recovery water tank is less than or equal to the second predefined value, if so, then enters step 306:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is greater than the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is greater than the first predefined value, judge whether the temperature of heat recovery water tank is less than or equal to the second predefined value, the second described predefined value is the temperature value preset according to heat recovery water pump demand for control, wherein, the second predefined value is greater than the first predefined value.
S306, judge whether the opening time of described compressor is greater than the second Preset Time, if so, then enters step 307, if not, then enters step 311:
When judge the real time temperature of heat recovery water tank be greater than the first predefined value be less than or equal to the second predefined value time, judge whether the opening time of compressor is greater than the second Preset Time, namely judge whether the operating time of compressor is greater than the second Preset Time, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
S307, generation the 3rd control command, and open described heat recovery water pump according to described 3rd control command;
When judging that the operating time of compressor has been greater than the second Preset Time, generating the 3rd control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
S308, when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value, generates the 5th control command, and closes described heat recovery water pump according to described 5th control command;
In the process that heat recovery water pump is in running order, when the real time temperature of the heat recovery water tank detected is greater than the 3rd predefined value, wherein the 3rd predefined value is greater than the second predefined value, generate the 5th control command, close in running order in heat recovery water pump.
S309, judge whether described compressor closes, and if so, then enters step S310:
In the process that heat recovery water pump is in running order, the working state of compressor is judged simultaneously.
S310, generation the 6th control command, and close described heat recovery water pump according to described 6th control command;
When judging that compressor quits work, generate the 6th control command, close in running order in heat recovery water pump.
S311, generation the 4th control command, and control described heat recovery water pump maintenance closed condition according to described 4th control command.
When judging that the operating time of compressor is less than or equal to the second Preset Time, generating the 4th control command, controlling heat recovery water pump and keeping closed condition, namely control heat recovery water pump and be in idle state.
In the above-described embodiments; in whole control procedure; the real time temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump, the closedown of heat recovery water pump is controlled meanwhile; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 4, another kind of heat recovery water method for controlling pump disclosed in the embodiment of the present invention, comprising:
The temperature of S401, detection heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first the temperature of the heat recovery water tank in heat recovery Screw chiller being detected, getting the real time temperature of heat recovery water tank.
S402, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judge whether the opening time of described compressor is greater than the second Preset Time, if so, then enters step 403:
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, judge whether the opening time of the compressor in heat recovery Screw chiller is greater than the second Preset Time, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
S403, in the 3rd preset time period, detect heat recovery water switch whether become from disconnection closed, if so, then enter step 404:
When judging that the opening time of the compressor in heat recovery Screw chiller is greater than the second Preset Time, heat recovery water switch being detected, judging whether heat recovery water switch is become from disconnection closed in the 3rd preset time period.
S404, generation the 7th control command, and open described heat recovery water pump according to described 7th control command.
When detecting that heat recovery water switch becomes closed from disconnection in the 3rd preset time period, generating the 7th control command, starting heat recovery water pump, namely control heat recovery water pump in running order.
In the above-described embodiments; the temperature of heat recovery water tank and the opening time of compressor are considered; and the state of heat recovery water switch; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 5, a kind of heat recovery water pump control system disclosed in the embodiment of the present invention, comprising:
First detection unit 501, for detecting the temperature of heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first being detected by the temperature of the heat recovery water tank in the first detection unit 501 pairs of heat recovery Screw chiller, getting the real time temperature of heat recovery water tank.
First judging unit 502, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, whether the compressor judged in heat recovery Screw chiller by the first judging unit 502 is opened in the first Preset Time, and the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
First generation unit 503, for when judging that compressor is opened in the first Preset Time, generates the first control command;
When the first judging unit 502 judges that compressor has been in opening state in the first Preset Time, generate the first control command by the first generation unit 503.
First control unit 504, keeps closed condition for controlling heat recovery water pump according to described first control command;
Control heat recovery water pump by the first control unit 504 according to the first control command and keep closed condition, namely control heat recovery water pump and be in idle state.
Second generation unit 505, for when judging that compressor is not opened in the first Preset Time, generates the second control command;
When the first judging unit 502 judges that compressor is not also opened in the first Preset Time, generate the second control command by the second generation unit 505.
Second control unit 506, for opening described heat recovery water pump according to described second control command.
Start heat recovery water pump by the second control unit 506 according to the second control command, namely control heat recovery water pump in running order.
In the above-described embodiments, first by detecting the temperature of heat recovery water tank, when the temperature of heat recovery water tank is less than or equal to the first default predefined value, continue to judge whether open at the first Preset Time inner compressor, when judging that compressor is opened in the first Preset Time, controlling heat recovery water pump and keep closed condition, when judging that compressor is not opened in the first Preset Time, then opening heat recovery water pump.In whole control procedure; the temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 6, another kind of heat recovery water pump control system disclosed in the embodiment of the present invention, comprising:
First detection unit 601, for detecting the temperature of heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first being detected by the temperature of the heat recovery water tank in the first detection unit 601 pairs of heat recovery Screw chiller, getting the real time temperature of heat recovery water tank.
First judging unit 602, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, whether the compressor judged in heat recovery Screw chiller by the first judging unit 602 is opened in the first Preset Time, and the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
First generation unit 603, for when judging that compressor is opened in the first Preset Time, generates the first control command;
When the first judging unit 602 judges that compressor has been in opening state in the first Preset Time, generate the first control command by the first generation unit 603.
First control unit 604, keeps closed condition for controlling heat recovery water pump according to described first control command;
Control heat recovery water pump by the first control unit 604 according to the first control command and keep closed condition, namely control heat recovery water pump and be in idle state.
Second generation unit 605, for when judging that compressor is not opened in the first Preset Time, generates the second control command;
When the first judging unit 602 judges that compressor is not also opened in the first Preset Time, generate the second control command by the second generation unit 605.
Second control unit 606, for opening described heat recovery water pump according to described second control command.
Start heat recovery water pump by the second control unit 606 according to the second control command, namely control heat recovery water pump in running order.
Second judging unit 607, for when the temperature of described heat recovery water tank is greater than described first predefined value, judges whether the temperature of described heat recovery water tank is less than or equal to the second predefined value;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is greater than the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is greater than the first predefined value, judge whether the temperature of heat recovery water tank is less than or equal to the second predefined value by the second judging unit 607, the second described predefined value is the temperature value preset according to heat recovery water pump demand for control, wherein, the second predefined value is greater than the first predefined value.
3rd judging unit 608, for when judging that the temperature of described heat recovery water tank is less than or equal to the second predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
When the second judging unit 607 judge the real time temperature of heat recovery water tank be greater than the first predefined value be less than or equal to the second predefined value time, judge whether the opening time of compressor is greater than the second Preset Time by the 3rd judging unit 608, namely judge whether the operating time of compressor is greater than the second Preset Time, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
3rd generation unit 609, for when judging that the opening time of described compressor is greater than the second Preset Time, generates the 3rd control command;
When the 3rd judging unit 608 judges that the operating time of compressor has been greater than the second Preset Time, generate the 3rd control command by the 3rd generation unit 609.
3rd control unit 610, for opening described heat recovery water pump according to described 3rd control command;
3rd control unit 610 starts heat recovery water pump according to the 3rd control command, namely controls heat recovery water pump in running order.
4th generation unit 611, for when judging that the opening time of described compressor is less than or equal to the second Preset Time, generates the 4th control command;
When the 3rd judging unit 608 judges that the operating time of compressor is less than or equal to the second Preset Time, generate the 4th control command by the 4th generation unit 611.
4th control unit 612, keeps closed condition for controlling described heat recovery water pump according to described 4th control command.
4th control unit 612 controls heat recovery water pump according to the 4th control command and keeps closed condition, namely controls heat recovery water pump and is in idle state.
In the above-described embodiments; in whole control procedure; the real time temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 7, another kind of heat recovery water pump control system disclosed in the embodiment of the present invention, comprising:
First detection unit 701, for detecting the temperature of heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first being detected by the temperature of the heat recovery water tank in the first detection unit 701 pairs of heat recovery Screw chiller, getting the real time temperature of heat recovery water tank.
First judging unit 702, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, whether the compressor judged in heat recovery Screw chiller by the first judging unit 702 is opened in the first Preset Time, and the first described Preset Time is the time value preset according to heat recovery water pump demand for control.
First generation unit 703, for when judging that compressor is opened in the first Preset Time, generates the first control command;
When the first judging unit 702 judges that compressor has been in opening state in the first Preset Time, generate the first control command by the first generation unit 703.
First control unit 704, keeps closed condition for controlling heat recovery water pump according to described first control command;
Control heat recovery water pump by the first control unit 704 according to the first control command and keep closed condition, namely control heat recovery water pump and be in idle state.
Second generation unit 705, for when judging that compressor is not opened in the first Preset Time, generates the second control command;
When the first judging unit 702 judges that compressor is not also opened in the first Preset Time, generate the second control command by the second generation unit 705.
Second control unit 706, for opening described heat recovery water pump according to described second control command.
Start heat recovery water pump by the second control unit 706 according to the second control command, namely control heat recovery water pump in running order.
Second judging unit 707, for when the temperature of described heat recovery water tank is greater than described first predefined value, judges whether the temperature of described heat recovery water tank is less than or equal to the second predefined value;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is greater than the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is greater than the first predefined value, judge whether the temperature of heat recovery water tank is less than or equal to the second predefined value by the second judging unit 707, the second described predefined value is the temperature value preset according to heat recovery water pump demand for control, wherein, the second predefined value is greater than the first predefined value.
3rd judging unit 708, for when judging that the temperature of described heat recovery water tank is less than or equal to the second predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
When the second judging unit 707 judge the real time temperature of heat recovery water tank be greater than the first predefined value be less than or equal to the second predefined value time, judge whether the opening time of compressor is greater than the second Preset Time by the 3rd judging unit 708, namely judge whether the operating time of compressor is greater than the second Preset Time, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
3rd generation unit 709, for when judging that the opening time of described compressor is greater than the second Preset Time, generates the 3rd control command;
When the 3rd judging unit 708 judges that the operating time of compressor has been greater than the second Preset Time, generate the 3rd control command by the 3rd generation unit 709.
3rd control unit 710, for opening described heat recovery water pump according to described 3rd control command;
3rd control unit 710 starts heat recovery water pump according to the 3rd control command, namely controls heat recovery water pump in running order.
5th generation unit 711, for when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value, generates the 5th control command;
In the process that heat recovery water pump is in running order, when the real time temperature of the heat recovery water tank that the first detection unit 701 detects is greater than the 3rd predefined value, wherein the 3rd predefined value is greater than the second predefined value, generates the 5th control command by the 5th generation unit 711.
5th control unit 712, for closing described heat recovery water pump according to described 5th control command;
Heat recovery water pump in running order according to the 5th control command closedown by the 5th control unit 712.
4th judging unit 713, for judging whether described compressor closes;
In the process that heat recovery water pump is in running order, judged by the working state of the 4th judging unit 713 pairs of compressors simultaneously.
6th generation unit 714, for when judging that described compressor cuts out, generates the 6th control command;
When the 4th judging unit 713 judges that compressor quits work, generate the 6th control command by the 6th generation unit 714.
6th control unit 715, for closing described heat recovery water pump according to described 6th control command;
Heat recovery water pump in running order according to the 6th control command closedown by the 6th control unit 715.
4th generation unit 716, for when judging that the opening time of described compressor is less than or equal to the second Preset Time, generates the 4th control command;
When the 3rd judging unit 708 judges that the operating time of compressor is less than or equal to the second Preset Time, generate the 4th control command by the 4th generation unit 716.
4th control unit 717, keeps closed condition for controlling described heat recovery water pump according to described 4th control command.
4th control unit 717 controls heat recovery water pump according to the 4th control command and keeps closed condition, namely controls heat recovery water pump and is in idle state.
In the above-described embodiments; in whole control procedure; the real time temperature of heat recovery water tank and the opening time of compressor are considered; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump, the closedown of heat recovery water pump is controlled meanwhile; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
As shown in Figure 8, another kind of heat recovery water pump control system disclosed in the embodiment of the present invention, comprising:
First detection unit 801, for detecting the temperature of heat recovery water tank;
When needing to control the heat recovery water pump in heat recovery Screw chiller, first the temperature of the heat recovery water tank in heat recovery Screw chiller being detected, getting the real time temperature of heat recovery water tank.
5th judging unit 802, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
When after the real time temperature getting heat recovery water tank, judge whether the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, and the first described predefined value is the temperature value preset according to heat recovery water pump demand for control.When judging that the real time temperature of the heat recovery water tank got is less than or equal to the first predefined value, judge whether the opening time of the compressor in heat recovery Screw chiller is greater than the second Preset Time by the 5th judging unit 802, the second described Preset Time is the time value preset according to heat recovery water pump demand for control.
Whether the second detection unit 803, for when judging that the opening time of described compressor is greater than the second Preset Time, detecting heat recovery water switch and being become from disconnection closed in the 3rd preset time period;
When the opening time of the compressor that the 5th judging unit 803 judges in heat recovery Screw chiller is greater than the second Preset Time, detected by the second detection unit 803 pairs of heat recovery water switches, judge whether heat recovery water switch is become from disconnection closed in the 3rd preset time period.
7th generation unit 804, for when detecting heat recovery water switch and become closed from disconnection in the 3rd preset time period, generates the 7th control command;
When the second detection unit 803 detects that heat recovery water switch becomes closed from disconnection in the 3rd preset time period, generate the 7th control command by the 7th generation unit 804.
7th control unit 805, for opening described heat recovery water pump according to described 7th control command.
Start heat recovery water pump by the 7th control unit 805 according to the 7th control command, namely control heat recovery water pump in running order.
In the above-described embodiments; the temperature of heat recovery water tank and the opening time of compressor are considered; and the state of heat recovery water switch; avoid the problem opening by mistake unit that heat recovery water pump causes and frequently protect; ensure that the normal unlatching of heat recovery water pump; more intelligence is effective to make the control of heat recovery water pump, and then improves operational reliability and the working life of unit.
If the function described in the present embodiment method using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a calculating equipment read/write memory medium.Based on such understanding, the part of the part that the embodiment of the present invention contributes to prior art or this technological scheme can embody with the form of software product, this software product is stored in a storage medium, comprising some instructions in order to make a calculating equipment (can be personal computer, server, mobile computing device or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, ROM (read-only memory) (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, between each embodiment same or similar part mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a heat recovery water method for controlling pump, is characterized in that, comprising:
Detect the temperature of heat recovery water tank;
When the temperature of described heat recovery water tank is less than or equal to the first predefined value, judge whether compressor is opened in the first Preset Time, if so, then: generate the first control command, and control heat recovery water pump maintenance closed condition according to described first control command; If not, then:
Generate the second control command, and open described heat recovery water pump according to described second control command.
2. method according to claim 1, is characterized in that, when the temperature of described heat recovery water tank is greater than described first predefined value, judges whether the temperature of described heat recovery water tank is less than or equal to the second predefined value, if so, then:
Judge whether the opening time of described compressor is greater than the second Preset Time, if so, then: generate the 3rd control command, and open described heat recovery water pump according to described 3rd control command; If not, then:
Generate the 4th control command, and control described heat recovery water pump maintenance closed condition according to described 4th control command.
3. method according to claim 2, is characterized in that, when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value;
Generate the 5th control command, and close described heat recovery water pump according to described 5th control command.
4. method according to claim 3, is characterized in that, also comprises:
Judge whether described compressor closes, if so, then:
Generate the 6th control command, and close described heat recovery water pump according to described 6th control command.
5. method according to claim 1, is characterized in that, when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether the opening time of described compressor is greater than the second Preset Time, if so, then:
Whether in the 3rd preset time period, detect heat recovery water switch is become closed from disconnection, if so, then:
Generate the 7th control command, and open described heat recovery water pump according to described 7th control command.
6. a heat recovery water pump control system, is characterized in that, comprising:
First detection unit, for detecting the temperature of heat recovery water tank;
First judging unit, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether compressor is opened in the first Preset Time;
First generation unit, for when judging that compressor is opened in the first Preset Time, generates the first control command;
First control unit, keeps closed condition for controlling heat recovery water pump according to described first control command;
Second generation unit, for when judging that compressor is not opened in the first Preset Time, generates the second control command;
Second control unit, for opening described heat recovery water pump according to described second control command.
7. system according to claim 6, is characterized in that, also comprises:
Second judging unit, for when the temperature of described heat recovery water tank is greater than described first predefined value, judges whether the temperature of described heat recovery water tank is less than or equal to the second predefined value;
3rd judging unit, for when judging that the temperature of described heat recovery water tank is less than or equal to the second predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
3rd generation unit, for when judging that the opening time of described compressor is greater than the second Preset Time, generates the 3rd control command;
3rd control unit, for opening described heat recovery water pump according to described 3rd control command;
4th generation unit, for when judging that the opening time of described compressor is less than or equal to the second Preset Time, generates the 4th control command;
4th control unit, keeps closed condition for controlling described heat recovery water pump according to described 4th control command.
8. system according to claim 7, is characterized in that, also comprises:
5th generation unit, for when the temperature of described heat recovery water tank is greater than the 3rd predefined value, wherein, described 3rd predefined value is greater than described second predefined value, generates the 5th control command;
5th control unit, for closing described heat recovery water pump according to described 5th control command.
9. system according to claim 8, is characterized in that, also comprises:
4th judging unit, for judging whether described compressor closes;
6th generation unit, for when judging that described compressor cuts out, generates the 6th control command;
6th control unit, for closing described heat recovery water pump according to described 6th control command.
10. system according to claim 6, is characterized in that, also comprises:
5th judging unit, for when the temperature of described heat recovery water tank is less than or equal to the first predefined value, judges whether the opening time of described compressor is greater than the second Preset Time;
Whether the second detection unit, for when judging that the opening time of described compressor is greater than the second Preset Time, detecting heat recovery water switch and being become from disconnection closed in the 3rd preset time period;
7th generation unit, for when detecting heat recovery water switch and become closed from disconnection in the 3rd preset time period, generates the 7th control command;
7th control unit, for opening described heat recovery water pump according to described 7th control command.
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| GB2031135A (en) * | 1978-10-10 | 1980-04-16 | Marks & Spencer Ltd | Heat reclaim plant |
| JPH07174436A (en) * | 1993-12-17 | 1995-07-14 | Shimizu Corp | River water utilizing heat recovery system |
| CN103363618A (en) * | 2012-04-10 | 2013-10-23 | 珠海格力电器股份有限公司 | Multi-module air conditioner and heat recovery control method thereof |
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| CN105201806B (en) | 2017-03-22 |
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