CN105466095A - Electrical heating control method, device and system for low-temperature refrigerating air conditioning unit - Google Patents

Electrical heating control method, device and system for low-temperature refrigerating air conditioning unit Download PDF

Info

Publication number
CN105466095A
CN105466095A CN201610052387.4A CN201610052387A CN105466095A CN 105466095 A CN105466095 A CN 105466095A CN 201610052387 A CN201610052387 A CN 201610052387A CN 105466095 A CN105466095 A CN 105466095A
Authority
CN
China
Prior art keywords
low
air conditioner
refrigeration air
temperature
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610052387.4A
Other languages
Chinese (zh)
Other versions
CN105466095B (en
Inventor
李金奎
肖福佳
杨虹
李庆
卫广穹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201610052387.4A priority Critical patent/CN105466095B/en
Publication of CN105466095A publication Critical patent/CN105466095A/en
Application granted granted Critical
Publication of CN105466095B publication Critical patent/CN105466095B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B49/00Arrangement or mounting of control or safety devices
    • F25B49/02Arrangement or mounting of control or safety devices for compression type machines, plant or systems
    • F25B49/022Compressor control arrangements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2500/00Problems to be solved
    • F25B2500/28Means for preventing liquid refrigerant entering into the compressor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT-PUMP SYSTEMS
    • F25B2600/00Control issues
    • F25B2600/02Compressor control

Abstract

The invention discloses an electrical heating control method, device and system for a low-temperature refrigerating air conditioning unit. The method comprises the steps that current states of the low-temperature refrigerating air conditioning unit are detected, wherein the states comprise the halt state, the standby state and the operation state; if the current state of the low-temperature refrigerating air conditioning unit is the halt state, after a starting instruction is received, if the halt time reaches a first preset time, an electrical heating device is controlled to be started for a second preset time, and then a compressor is controlled to start running; if the current state of the low-temperature refrigerating air conditioning unit is the operation state, the suction gas superheat of the low-temperature refrigerating air conditioning unit is calculated, and if the suction gas superheat does not exceeds a first preset temperature, the electrical heating device is controlled to be started. According to the electrical heating control method, device and system for the low-temperature refrigerating air conditioning unit, the problem that the compressor brings liquid when the whole unit is powered on to be restarted (after being powered off) and the unit is in the operation process can be effectively solved, therefore, the compressor liquid impact risk is prevented from being generated, and the compressor can be better protected.

Description

Low-temperature refrigeration air conditioner unit electric heating controlling method, device and system
Technical field
The present invention relates to control technology field, particularly relate to a kind of low-temperature refrigeration air conditioner unit electric heating controlling method, device and system.
Background technology
At present, be applied to low-temperature refrigeration air conditioner machine set compressor electrically heated control mode great majority and adopt original heavy-current control, according to the switch of compressor A.C. contactor, open or close electrical heating.Namely compressor is opened, and electrical heating is closed; Compressor cuts out, and electrical heating is opened.
Although this method of prior art controls simple, the situation of refrigerant migration (i.e. compressor band liquid) under long-time holding state can be solved, but the problem of compressor band liquid when starting after effectively cannot preventing the power-off of unit complete machine and in unit running process, the risk of easy generation compressor liquid hammer, thus damage compressor.
Summary of the invention
In view of this; the invention provides a kind of low-temperature refrigeration air conditioner unit electric heating controlling method, device and system; can effectively prevent unit complete machine (after power-off) to power on when restarting and the problem of compressor band liquid in unit running process; thus avoid the risk producing compressor liquid hammer, compressor can be protected better.
For achieving the above object, the invention provides following technical scheme:
A kind of low-temperature refrigeration air conditioner unit electric heating controlling method, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor, comprising:
Detect the state that described low-temperature refrigeration air conditioner unit is current, described state comprises stopped status, holding state and running status;
If the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
If the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
Preferably, also comprise:
If do not reach described first Preset Time described downtime, control described compressor starts and run.
Preferably, also comprise:
If described suction superheat exceedes described first preset temperature, control described electric heater unit and close.
Preferably, the suction superheat of the described low-temperature refrigeration air conditioner unit of described calculating comprises:
Determine suction temperature and the evaporating temperature of described compressor;
Calculate the difference that described suction temperature deducts described evaporating temperature, obtain described suction superheat.
Preferably, also comprise:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
A kind of low-temperature refrigeration air conditioner unit electric heating control device, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor, comprising:
Detection module, for detecting the current state of described low-temperature refrigeration air conditioner unit, described state comprises stopped status, holding state and running status;
First control module, if be described stopped status for the state that described low-temperature refrigeration air conditioner unit is current, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
Second control module, if be described running status for the state that described low-temperature refrigeration air conditioner unit is current, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
Preferably, also comprise:
3rd control module, if for not reaching described first Preset Time described downtime, controlling described compressor starts and running.
Preferably, also comprise:
4th control module, if exceed described first preset temperature for described suction superheat, controls described electric heater unit and closes.
Preferably, the second control module comprises:
Computing unit, for calculating the suction superheat of described low-temperature refrigeration air conditioner unit;
Described computing unit comprises determines subelement and computation subunit;
Describedly determine subelement, for determining suction temperature and the evaporating temperature of described compressor;
Described computation subunit, deducts the difference of described evaporating temperature for calculating described suction temperature, obtain described suction superheat.
Preferably, also comprise:
5th control module, if be described holding state for the state that described low-temperature refrigeration air conditioner unit is current, if stand-by time is not more than the 3rd Preset Time, control described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
A kind of low-temperature refrigeration air conditioner unit electric-heating control system, comprising:
Controller, the compressor be connected with described controller, and be arranged on the electric heater unit on described compressor;
The operation of described controller comprises: detect the state that described low-temperature refrigeration air conditioner unit is current, described state comprises stopped status, holding state and running status; If the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run; If the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
Preferably, the operation of described controller also comprises:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
Known via above-mentioned technical scheme, compared with prior art, the invention provides a kind of low-temperature refrigeration air conditioner unit electric heating controlling method, device and system.Low-temperature refrigeration air conditioner unit electric heating controlling method provided by the invention, first the state that described low-temperature refrigeration air conditioner unit is current is detected, described state comprises stopped status, holding state and running status, if the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, then control described electric heater unit and open the second Preset Time, to prevent compressor band liquid, and then control the operation of described compressor starts, thus the risk producing compressor liquid hammer can be avoided, if the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, then may make compressor band liquid, now control described electric heater unit to open, to prevent the problem of compressor band liquid, thus the risk producing compressor liquid hammer can be avoided.Therefore, technical scheme provided by the invention, effectively can prevent unit complete machine (after power-off) to power on when restarting and the problem of compressor band liquid in unit running process, thus avoid the risk producing compressor liquid hammer, can protect compressor better.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical 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 embodiments of the 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 the accompanying drawing provided.
The flow chart of a kind of low-temperature refrigeration air conditioner unit electric heating controlling method that Fig. 1 provides for the embodiment of the present invention;
The structure chart of a kind of low-temperature refrigeration air conditioner unit electric heating control device that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical 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.
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment
Refer to Fig. 1, the flow chart of a kind of low-temperature refrigeration air conditioner unit electric heating controlling method that Fig. 1 provides for the embodiment of the present invention.The low-temperature refrigeration air conditioner unit electric heating controlling method that the embodiment of the present invention provides, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor.As shown in Figure 1, the method comprises:
Step S101, detects the state that described low-temperature refrigeration air conditioner unit is current;
Concrete, described state comprises stopped status, holding state and running status.Described stopped status refers to that described low-temperature refrigeration air conditioner unit complete machine is in off-position, does not namely connect civil power; Described holding state refers to that described low-temperature refrigeration air conditioner unit complete machine connects civil power, current idle off-duty.
Step S102, if the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
Concrete; if reach the first Preset Time downtime; then may there is the problem of compressor band liquid; now; control described electric heater unit and open the second Preset Time to solve the problem of the compressor band liquid that may occur; and then control the operation of described compressor starts, compressor flooded starts and operation can be prevented, thus the risk of compressor liquid hammer can be prevented.
Step S103, if the current state of described low-temperature refrigeration air conditioner unit is described running status, calculates the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and opens;
Concrete, if described suction superheat is not more than the first preset temperature, then illustrate that unit occurs abnormal (in such as unit operation, load changes), the problem of compressor band liquid may be there is, now, control the unlatching of described electric heater unit to solve the problem of the compressor band liquid that may occur, compressor band liquid can be avoided to run, thus the risk of compressor liquid hammer can be prevented.
Optionally, described first preset temperature is 4 degrees Celsius.
Optionally, the suction superheat of the described low-temperature refrigeration air conditioner unit of described calculating comprises:
Determine suction temperature and the evaporating temperature of described compressor;
Optionally, obtain described suction temperature by the temperature-sensitive bag being arranged on compressor air suction mouth, obtain unit refrigerant evaporation force value by the pressure sensor being arranged on compressor air suction mouth, calculate described evaporating temperature by described unit refrigerant evaporation force value.
Calculate the difference that described suction temperature deducts described evaporating temperature, obtain described suction superheat.
Concrete, described electric heater unit comprises heat tape.
The low-temperature refrigeration air conditioner unit electric heating controlling method that the embodiment of the present invention provides, first the state that described low-temperature refrigeration air conditioner unit is current is detected, described state comprises stopped status, holding state and running status, if the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, then control described electric heater unit and open the second Preset Time, to prevent compressor band liquid, and then control the operation of described compressor starts, thus the risk producing compressor liquid hammer can be avoided, if the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, then may make compressor band liquid, now control described electric heater unit to open, to prevent the problem of compressor band liquid, thus the risk producing compressor liquid hammer can be avoided.Therefore; the technical scheme that the embodiment of the present invention provides; effectively can prevent unit complete machine (after power-off) to power on when restarting and the problem of compressor band liquid in unit running process, thus avoid the risk producing compressor liquid hammer, compressor can be protected better.
Optionally, the technical scheme that another one embodiment of the present invention provides, described step S102 also comprises:
If do not reach described first Preset Time described downtime, control described compressor starts and run.
Optionally, the technical scheme that another one embodiment of the present invention provides, described step S103 also comprises:
If described suction superheat exceedes described first preset temperature, control described electric heater unit and close.
Optionally, the technical scheme that another one embodiment of the present invention provides, also comprises:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
Concrete, such as described 4th Preset Time is 5 minutes, described 5th Preset Time is 10 minutes, then, if described stand-by time reaches described 3rd Preset Time during 9:00, then, (9:00 ~ 9:05) time period controls described electric heater unit and closes, (9:05 ~ 9:15) time period controls described electric heater unit and maintains opening, (9:15 ~ 9:20) time period controls described electric heater unit and closes, (9:20 ~ 9:30) time period controls described electric heater unit and maintains opening, by that analogy.That is, the technical scheme that another one embodiment of the present invention provides, electric heater unit described in intermittency check is adopted to open, and be not keep electric heater unit to open in prior art always, keep electric heater unit to open the energy waste problem caused under can avoiding the long-time holding state of unit always, also can solve unit holding state lower short time band liquid problem simultaneously, in addition, also can prevent keeping electric heater unit to open in prior art causes unit working environment high always, and then cause oil temperature high, the problem that compressor electric motor cooling is abnormal.
In order to set forth technical scheme provided by the invention more all sidedly, corresponding to the low-temperature refrigeration air conditioner unit electric heating controlling method that the embodiment of the present invention provides, the present invention discloses a kind of low-temperature refrigeration air conditioner unit electric heating control device.
Refer to Fig. 2, the structure chart of a kind of low-temperature refrigeration air conditioner unit electric heating control device that Fig. 2 provides for the embodiment of the present invention.The low-temperature refrigeration air conditioner unit electric heating control device that the embodiment of the present invention provides, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor.As shown in Figure 2, this application of installation, in the controller of system, comprising:
Detection module 201, for detecting the current state of described low-temperature refrigeration air conditioner unit, described state comprises stopped status, holding state and running status;
First control module 202, if be described stopped status for the state that described low-temperature refrigeration air conditioner unit is current, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
Second control module 203, if be described running status for the state that described low-temperature refrigeration air conditioner unit is current, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
Optionally, described second control module 203 comprises:
Computing unit, for calculating the suction superheat of described low-temperature refrigeration air conditioner unit;
Described computing unit comprises determines subelement and computation subunit;
Describedly determine subelement, for determining suction temperature and the evaporating temperature of described compressor;
Described computation subunit, deducts the difference of described evaporating temperature for calculating described suction temperature, obtain described suction superheat.
The low-temperature refrigeration air conditioner unit electric heating control device that the embodiment of the present invention provides; can effectively prevent unit complete machine (after power-off) to power on when restarting and the problem of compressor band liquid in unit running process; thus avoid the risk producing compressor liquid hammer, compressor can be protected better.
Optionally, the low-temperature refrigeration air conditioner unit electric heating control device that another one embodiment of the present invention provides, also comprises:
3rd control module, if for not reaching described first Preset Time described downtime, controlling described compressor starts and running.
Optionally, the low-temperature refrigeration air conditioner unit electric heating control device that another one embodiment of the present invention provides, also comprises:
4th control module, if exceed described first preset temperature for described suction superheat, controls described electric heater unit and closes.
Optionally, the low-temperature refrigeration air conditioner unit electric heating control device that another one embodiment of the present invention provides, also comprises:
5th control module, if be described holding state for the state that described low-temperature refrigeration air conditioner unit is current, if stand-by time is not more than the 3rd Preset Time, control described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
In order to set forth technical scheme provided by the invention more all sidedly, corresponding to the low-temperature refrigeration air conditioner unit electric heating controlling method that the embodiment of the present invention provides, the present invention also discloses a kind of low-temperature refrigeration air conditioner unit electric-heating control system, and particular content is as follows:
A kind of low-temperature refrigeration air conditioner unit electric-heating control system, comprising:
Controller, the compressor be connected with described controller, and be arranged on the electric heater unit on described compressor;
The operation of described controller comprises: detect the state that described low-temperature refrigeration air conditioner unit is current, described state comprises stopped status, holding state and running status; If the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run; If the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
Optionally, the low-temperature refrigeration air conditioner unit electric-heating control system that another one embodiment of the present invention provides, the operation of described controller also comprises:
If do not reach described first Preset Time described downtime, control described compressor starts and run.
Optionally, the low-temperature refrigeration air conditioner unit electric-heating control system that another one embodiment of the present invention provides, the operation of described controller also comprises:
If described suction superheat exceedes described first preset temperature, control described electric heater unit and close.
Optionally, the low-temperature refrigeration air conditioner unit electric-heating control system that another one embodiment of the present invention provides, the operation of described controller also comprises:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
Known via above-mentioned technical scheme, compared with prior art, the invention provides a kind of low-temperature refrigeration air conditioner unit electric heating controlling method, device and system.Low-temperature refrigeration air conditioner unit electric heating controlling method provided by the invention, first the state that described low-temperature refrigeration air conditioner unit is current is detected, described state comprises stopped status, holding state and running status, if the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, then control described electric heater unit and open the second Preset Time, to prevent compressor band liquid, and then control the operation of described compressor starts, thus the risk producing compressor liquid hammer can be avoided, if the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, then may make compressor band liquid, now control described electric heater unit to open, to prevent the problem of compressor band liquid, thus the risk producing compressor liquid hammer can be avoided.Therefore, technical scheme provided by the invention, effectively can prevent unit complete machine (after power-off) to power on when restarting and the problem of compressor band liquid in unit running process, thus avoid the risk producing compressor liquid hammer, can protect compressor better.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For device disclosed in embodiment and system, because it is corresponding with method part disclosed in embodiment, so description is fairly simple, relevant part illustrates see method part.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, read-only storage (ROM), electrically programmable ROM, electrically erasable ROM, register or technical field.
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 (12)

1. a low-temperature refrigeration air conditioner unit electric heating controlling method, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor, it is characterized in that, comprising:
Detect the state that described low-temperature refrigeration air conditioner unit is current, described state comprises stopped status, holding state and running status;
If the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
If the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
2. method according to claim 1, is characterized in that, also comprises:
If do not reach described first Preset Time described downtime, control described compressor starts and run.
3. method according to claim 1, is characterized in that, also comprises:
If described suction superheat exceedes described first preset temperature, control described electric heater unit and close.
4. method according to claim 1, is characterized in that, the suction superheat of the described low-temperature refrigeration air conditioner unit of described calculating comprises:
Determine suction temperature and the evaporating temperature of described compressor;
Calculate the difference that described suction temperature deducts described evaporating temperature, obtain described suction superheat.
5. the method according to any one of Claims 1 to 4, is characterized in that, also comprises:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
6. a low-temperature refrigeration air conditioner unit electric heating control device, described low-temperature refrigeration air conditioner unit comprises compressor and is arranged on the electric heater unit on described compressor, it is characterized in that, comprising:
Detection module, for detecting the current state of described low-temperature refrigeration air conditioner unit, described state comprises stopped status, holding state and running status;
First control module, if be described stopped status for the state that described low-temperature refrigeration air conditioner unit is current, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run;
Second control module, if be described running status for the state that described low-temperature refrigeration air conditioner unit is current, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
7. device according to claim 6, is characterized in that, also comprises:
3rd control module, if for not reaching described first Preset Time described downtime, controlling described compressor starts and running.
8. device according to claim 6, is characterized in that, also comprises:
4th control module, if exceed described first preset temperature for described suction superheat, controls described electric heater unit and closes.
9. device according to claim 6, is characterized in that, the second control module comprises:
Computing unit, for calculating the suction superheat of described low-temperature refrigeration air conditioner unit;
Described computing unit comprises determines subelement and computation subunit;
Describedly determine subelement, for determining suction temperature and the evaporating temperature of described compressor;
Described computation subunit, deducts the difference of described evaporating temperature for calculating described suction temperature, obtain described suction superheat.
10. the device according to any one of claim 6 ~ 9, is characterized in that, also comprises:
5th control module, if be described holding state for the state that described low-temperature refrigeration air conditioner unit is current, if stand-by time is not more than the 3rd Preset Time, control described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
11. 1 kinds of low-temperature refrigeration air conditioner unit electric-heating control systems, is characterized in that, comprising:
Controller, the compressor be connected with described controller, and be arranged on the electric heater unit on described compressor;
The operation of described controller comprises: detect the state that described low-temperature refrigeration air conditioner unit is current, described state comprises stopped status, holding state and running status; If the current state of described low-temperature refrigeration air conditioner unit is described stopped status, after receiving start-up command, if reach the first Preset Time downtime, control after the second Preset Time opened by described electric heater unit, to control described compressor starts and run; If the current state of described low-temperature refrigeration air conditioner unit is described running status, calculate the suction superheat of described low-temperature refrigeration air conditioner unit, if described suction superheat is not more than the first preset temperature, controls described electric heater unit and open.
12. systems according to claim 11, is characterized in that, the operation of described controller also comprises:
If the current state of described low-temperature refrigeration air conditioner unit is described holding state, if stand-by time is not more than the 3rd Preset Time, controls described electric heater unit and maintain opening, otherwise, control described electric heater unit every the 4th Preset Time to open, each unlatching the 5th Preset Time.
CN201610052387.4A 2016-01-25 2016-01-25 Low-temperature refrigeration air conditioner unit electric heating controlling method, device and system Active CN105466095B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610052387.4A CN105466095B (en) 2016-01-25 2016-01-25 Low-temperature refrigeration air conditioner unit electric heating controlling method, device and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610052387.4A CN105466095B (en) 2016-01-25 2016-01-25 Low-temperature refrigeration air conditioner unit electric heating controlling method, device and system

Publications (2)

Publication Number Publication Date
CN105466095A true CN105466095A (en) 2016-04-06
CN105466095B CN105466095B (en) 2018-04-20

Family

ID=55604066

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610052387.4A Active CN105466095B (en) 2016-01-25 2016-01-25 Low-temperature refrigeration air conditioner unit electric heating controlling method, device and system

Country Status (1)

Country Link
CN (1) CN105466095B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106369719A (en) * 2016-10-08 2017-02-01 珠海格力电器股份有限公司 Heat pump system, control method of heat pump system and air conditioner
CN106440589A (en) * 2016-11-03 2017-02-22 广东美的暖通设备有限公司 Heating control method and system of crankcase heating belt and air conditioner
WO2018113323A1 (en) * 2016-12-22 2018-06-28 重庆美的通用制冷设备有限公司 Method and system for automatically and rapidly starting up unit after de-energization, and air conditioner
CN109114852A (en) * 2018-08-07 2019-01-01 珠海格力电器股份有限公司 A kind of adjusting method of electric expansion valve, the equipment using this method
CN109564044A (en) * 2016-08-16 2019-04-02 三菱电机株式会社 Air-conditioning device
CN110762914A (en) * 2019-10-25 2020-02-07 青岛海尔空调电子有限公司 Method for controlling heating belt of compressor

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005351590A (en) * 2004-06-14 2005-12-22 Matsushita Electric Ind Co Ltd Cooling/warming system
CN102331124A (en) * 2011-05-30 2012-01-25 宁波奥克斯电气有限公司 Control method for preventing multi-unit air conditioner screw compressor from liquid impact
CN102538134A (en) * 2010-12-09 2012-07-04 三菱电机株式会社 Air-conditioning apparatus
CN102597659A (en) * 2009-11-11 2012-07-18 三菱电机株式会社 Air conditioner
CN202675719U (en) * 2012-06-07 2013-01-16 四川同达博尔置业有限公司 Air-cooled heat pump air conditioner

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005351590A (en) * 2004-06-14 2005-12-22 Matsushita Electric Ind Co Ltd Cooling/warming system
CN102597659A (en) * 2009-11-11 2012-07-18 三菱电机株式会社 Air conditioner
CN102538134A (en) * 2010-12-09 2012-07-04 三菱电机株式会社 Air-conditioning apparatus
CN102331124A (en) * 2011-05-30 2012-01-25 宁波奥克斯电气有限公司 Control method for preventing multi-unit air conditioner screw compressor from liquid impact
CN202675719U (en) * 2012-06-07 2013-01-16 四川同达博尔置业有限公司 Air-cooled heat pump air conditioner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
黄焕文、林海佳、谢鹏、刘丽君: "压缩机电机绕组预热的可行性试验研究", 《家电科技增刊-第十二届全国电冰箱(柜)、空调器及压缩机学术交流大会》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109564044A (en) * 2016-08-16 2019-04-02 三菱电机株式会社 Air-conditioning device
CN106369719A (en) * 2016-10-08 2017-02-01 珠海格力电器股份有限公司 Heat pump system, control method of heat pump system and air conditioner
CN106440589A (en) * 2016-11-03 2017-02-22 广东美的暖通设备有限公司 Heating control method and system of crankcase heating belt and air conditioner
CN106440589B (en) * 2016-11-03 2019-07-26 广东美的暖通设备有限公司 A kind of method for heating and controlling, system and the air conditioner of crankcase heating tape
WO2018113323A1 (en) * 2016-12-22 2018-06-28 重庆美的通用制冷设备有限公司 Method and system for automatically and rapidly starting up unit after de-energization, and air conditioner
CN109114852A (en) * 2018-08-07 2019-01-01 珠海格力电器股份有限公司 A kind of adjusting method of electric expansion valve, the equipment using this method
CN110762914A (en) * 2019-10-25 2020-02-07 青岛海尔空调电子有限公司 Method for controlling heating belt of compressor

Also Published As

Publication number Publication date
CN105466095B (en) 2018-04-20

Similar Documents

Publication Publication Date Title
CN105466095A (en) Electrical heating control method, device and system for low-temperature refrigerating air conditioning unit
US9057549B2 (en) System and method for monitoring compressor floodback
EP2102569B1 (en) Methods and systems for controlling an air conditioning system operating in free cooling mode
CN107091516B (en) Current control method, current control system and air conditioner
CN105928280B (en) The guard method of cooler compressor and device
CN107560112B (en) A kind of control method of air conditioner refrigerating high temperature-proof protection
WO2009048575A1 (en) Compressor protection system and method
CN107940694A (en) The exhaust protection control method and system of a kind of air conditioner
CN102062458A (en) Method for carrying out fault judgment and shutdown control on air conditioning compressor
CN104132423B (en) Control method and control device for liquid impact prevention for air conditioning system and air conditioning system
CN105180372A (en) Method and device for controlling air conditioner
CN107560063B (en) The control method of low-temperature refrigeration air conditioner
KR101229341B1 (en) Operation apparatus of compressor and control method thereof
CN105546752A (en) Air conditioner control method and device
CN104110922A (en) Heat pump system and start control method thereof
CN104527370A (en) Vehicle air-conditioner control system integrated with power battery cooling function and control method of vehicle air-conditioner control system integrated with power battery cooling function
CN104456846A (en) Control method for dual-system air conditioning unit
JP6076583B2 (en) heat pump
CN107246702B (en) Air conditioner explosion-proof control method
CN106329028A (en) Vehicular battery temperature control device and vehicular battery temperature control method
CN105841309A (en) Control method and control device of air conditioning outdoor unit and air conditioning outdoor unit
CN105066370A (en) Compressor overload protection control method and device and air conditioner
JP2016146279A (en) Air conditioning controller of battery pack
CN111023515B (en) Air conditioner, refrigeration control method of air conditioner and storage medium
CN205014550U (en) Air conditioner

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant