CN110274351B

CN110274351B - Ice and snow removal control method and device, storage medium and air conditioner

Info

Publication number: CN110274351B
Application number: CN201910563220.8A
Authority: CN
Inventors: 江焕宝; 林海佳
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-08-18
Anticipated expiration: 2039-06-26
Also published as: CN110274351A

Abstract

The invention discloses a control method and a control device for removing ice and snow, a storage medium and an air conditioner, wherein the method comprises the following steps: acquiring the outdoor environment temperature of the environment to which the air conditioner belongs, and acquiring the state parameters of the air conditioner; determining whether the outdoor unit of the air conditioner has ice and snow accumulation conditions according to the outdoor environment temperature and the state parameters; and if the ice and snow accumulation condition exists in the outdoor unit, controlling the heating device module to perform melting treatment. The scheme of the invention can solve the problem of ice and snow accumulation of the condenser and other parts of the unit due to extreme weather or long-time non-starting of the unit as a standby machine, and achieves the effect of difficult ice and snow accumulation.

Description

Ice and snow removal control method and device, storage medium and air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to a control method and device for removing ice and snow, a storage medium and an air conditioner, in particular to an air conditioner outdoor unit structure, a control method and device, a storage medium and an air conditioner.

Background

The air conditioner used in the data center and the precision machine room for communication needs to be continuously refrigerated all the year round due to the particularity of the use place, and in some cold/severe cold areas, when the outdoor unit of the air conditioner of the precision machine room is influenced by weather conditions or the unit needs to be started up for a long time as a standby unit to operate, the ice and snow accumulation condition often occurs to the unit, and the operation of the unit is seriously influenced.

The technical means of preventing and controlling the accumulation of ice and snow of the air conditioning unit is mainly used in the current industry, and the method is mainly used for defrosting the heat pump heating unit and the comfortable air conditioner, so that the ice and snow accumulation is avoided when the outdoor unit of the air conditioner of the precise machine room is operated, the high stability requirement of the refrigerating performance of the units of the data center and the communication place is met, and the design of the outdoor unit structure of the air conditioner and the control method for effectively preventing the accumulation of the ice and snow has.

The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.

Disclosure of Invention

The present invention is directed to provide a method and an apparatus for controlling ice and snow removal, a storage medium, and an air conditioner, which solve the problem of ice and snow accumulation in a condenser and other components of a unit, which may occur in extreme weather or when the unit is not turned on for a long time as a backup unit, and achieve the effect of preventing ice and snow accumulation.

The invention provides an ice and snow removal control method, which comprises the following steps: acquiring the outdoor environment temperature of the environment to which the air conditioner belongs, and acquiring the state parameters of the air conditioner; determining whether the outdoor unit of the air conditioner has ice and snow accumulation conditions according to the outdoor environment temperature and the state parameters; and if the ice and snow accumulation condition exists in the outdoor unit, controlling the heating device module to perform melting treatment.

Optionally, the heating device module is arranged on a chassis of the air conditioning unit and/or at the inner surface of parts around the chassis of the air conditioning unit; and/or the number of the heating device modules is more than one; the heating device modules are distributed between a water receiving disc of the air conditioner and the fan; the water receiving tray is obliquely arranged at a set inclination angle; and/or the heating device module has a waterproof processing protection device and is configured to be opened only when an outdoor unit of the air conditioner is opened; and/or, the heating device module, comprising: a heating device, and/or an ice melting device.

Optionally, the obtaining of the outdoor ambient temperature of the environment to which the air conditioner belongs includes: acquiring the outdoor environment temperature of the environment to which the air conditioner belongs through a data acquisition module arranged at the outdoor unit; and/or, acquiring state parameters of the air conditioner, including: monitoring and obtaining the condensation pressure of a refrigerant in a unit pipeline of the air conditioner through a high-voltage switch in the unit of the air conditioner; or the pressure or the gravity at the bottom of the water pan of the air conditioner is obtained by sensing through a weight or pressure sensing device arranged at the bottom of the water pan of the air conditioner; and monitoring to obtain the air pressure of the condenser through an air pressure switch arranged behind the condenser of the outdoor unit.

Optionally, the state parameter includes: condensing pressure of a refrigerant in a unit pipeline of the air conditioner, or pressure or gravity of the bottom of a water pan of the air conditioner and air pressure of a condenser; the method for determining whether ice and snow accumulation exists in the outdoor unit of the air conditioner comprises the following steps: determining whether the outdoor environment temperature is less than a preset temperature; if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the condensing pressure under the condition that the state parameter comprises the condensing pressure of a refrigerant in a unit pipeline of the air conditioner; or, if the outdoor environment temperature is less than the preset temperature, determining whether the outdoor unit of the air conditioner has ice and snow accumulation according to the pressure or gravity and the air pressure of the condenser under the condition that the state parameters comprise the pressure or gravity of the bottom of a water receiving tray of the air conditioner and the air pressure of the condenser.

Optionally, the determining whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the condensing pressure includes: determining whether the condensing pressure is greater than an upper limit of a first preset pressure range; if the condensing pressure is larger than the upper limit of the first preset pressure range, determining that the outdoor unit of the air conditioner has ice and snow accumulation condition, and starting a reminding message of the outdoor unit of the air conditioner that the ice and snow accumulation condition exists; and/or, determining whether the ice and snow accumulation condition exists in the outdoor unit of the air conditioner according to the pressure or gravity and the air pressure of the condenser, comprising the following steps: determining whether the condenser wind pressure is greater than the upper limit of a second preset pressure range, and determining whether the pressure or gravity is greater than the upper limit of a third preset pressure range; and if the air pressure of the condenser is greater than the upper limit of the second preset pressure range and the pressure or gravity is greater than the upper limit of the third preset pressure range, determining that the outdoor unit of the air conditioner has the ice and snow accumulation condition, and starting a reminding message of the ice and snow accumulation condition of the outdoor unit of the air conditioner.

Optionally, controlling the heating device module to perform a melting process includes: starting the heating device module, controlling the heating device module to enter a preheating mode, and preheating and operating for a first set time length in the preheating mode; after the first set time, if the outdoor unit still has the ice and snow accumulation condition, the heating power of the heating device module is increased to control the heating device module to enter a melting mode, and the outdoor unit is melted and operated for a second set time in the melting mode to complete a melting period.

Optionally, controlling the heating device module to perform melting processing further includes: if the condensing pressure after the melting period is greater than or equal to the lower limit of the first preset pressure range and less than or equal to the upper limit of the first preset pressure range within a third set time period, or the air pressure of the condenser after the melting period is greater than or equal to the lower limit of the second preset pressure range within the third set time period and less than or equal to the upper limit of the second preset pressure range, controlling the heating device module to return to the preheating mode, and operating for a fourth set time period in the preheating mode; after a fourth preset time, if the liquid level height of the water pan of the air conditioner is greater than or equal to the preset height, or if the pressure or gravity at the bottom of the water pan of the air conditioner is smaller than the lower limit of a third preset pressure range, or greater than the upper limit of the third preset pressure range, initiating a message for reminding water melting and draining faults, and controlling the heating device module to continue to operate in the preheating mode.

In accordance with the above method, another aspect of the present invention provides an ice and snow removal control apparatus, comprising: the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the outdoor environment temperature of the environment to which the air conditioner belongs and acquiring the state parameters of the air conditioner; the control unit is used for determining whether the outdoor unit of the air conditioner has ice and snow accumulation conditions according to the outdoor environment temperature and the state parameters; the control unit is also used for controlling the heating device module to perform melting treatment if the outdoor unit has ice and snow accumulation.

Optionally, wherein the obtaining unit obtains an outdoor ambient temperature of an environment to which the air conditioner belongs, and includes: acquiring the outdoor environment temperature of the environment to which the air conditioner belongs through a data acquisition module arranged at the outdoor unit; and/or the acquiring unit acquires the state parameters of the air conditioner, and comprises the following steps: monitoring and obtaining the condensation pressure of a refrigerant in a unit pipeline of the air conditioner through a high-voltage switch in the unit of the air conditioner; or the pressure or the gravity at the bottom of the water pan of the air conditioner is obtained by sensing through a weight or pressure sensing device arranged at the bottom of the water pan of the air conditioner; and monitoring to obtain the air pressure of the condenser through an air pressure switch arranged behind the condenser of the outdoor unit.

Optionally, the state parameter includes: condensing pressure of a refrigerant in a unit pipeline of the air conditioner, or pressure or gravity of the bottom of a water pan of the air conditioner and air pressure of a condenser; the control unit determines whether the ice and snow accumulation condition exists in the outdoor unit of the air conditioner, and comprises the following steps: determining whether the outdoor environment temperature is less than a preset temperature; if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the condensing pressure under the condition that the state parameter comprises the condensing pressure of a refrigerant in a unit pipeline of the air conditioner; or, if the outdoor environment temperature is less than the preset temperature, determining whether the outdoor unit of the air conditioner has ice and snow accumulation according to the pressure or gravity and the air pressure of the condenser under the condition that the state parameters comprise the pressure or gravity of the bottom of a water receiving tray of the air conditioner and the air pressure of the condenser.

Optionally, wherein the determining, by the control unit, whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the condensing pressure includes: determining whether the condensing pressure is greater than an upper limit of a first preset pressure range; if the condensing pressure is larger than the upper limit of the first preset pressure range, determining that the outdoor unit of the air conditioner has ice and snow accumulation condition, and starting a reminding message of the outdoor unit of the air conditioner that the ice and snow accumulation condition exists; and/or the control unit determines whether the ice and snow accumulation condition exists in the outdoor unit of the air conditioner according to the pressure or gravity and the air pressure of the condenser, and the control unit comprises: determining whether the condenser wind pressure is greater than the upper limit of a second preset pressure range, and determining whether the pressure or gravity is greater than the upper limit of a third preset pressure range; and if the air pressure of the condenser is greater than the upper limit of the second preset pressure range and the pressure or gravity is greater than the upper limit of the third preset pressure range, determining that the outdoor unit of the air conditioner has the ice and snow accumulation condition, and starting a reminding message of the ice and snow accumulation condition of the outdoor unit of the air conditioner.

Optionally, the control unit controls the heating device module to perform a melting process, including: starting the heating device module, controlling the heating device module to enter a preheating mode, and preheating and operating for a first set time length in the preheating mode; after the first set time, if the outdoor unit still has the ice and snow accumulation condition, the heating power of the heating device module is increased to control the heating device module to enter a melting mode, and the outdoor unit is melted and operated for a second set time in the melting mode to complete a melting period.

Optionally, the control unit controls the heating device module to perform melting treatment, and further includes: if the condensing pressure after the melting period is greater than or equal to the lower limit of the first preset pressure range and less than or equal to the upper limit of the first preset pressure range within a third set time period, or the air pressure of the condenser after the melting period is greater than or equal to the lower limit of the second preset pressure range within the third set time period and less than or equal to the upper limit of the second preset pressure range, controlling the heating device module to return to the preheating mode, and operating for a fourth set time period in the preheating mode; after a fourth preset time, if the liquid level height of the water pan of the air conditioner is greater than or equal to the preset height, or if the pressure or gravity at the bottom of the water pan of the air conditioner is smaller than the lower limit of a third preset pressure range, or greater than the upper limit of the third preset pressure range, initiating a message for reminding water melting and draining faults, and controlling the heating device module to continue to operate in the preheating mode.

In accordance with another aspect of the present invention, there is provided an air conditioner including: the ice and snow removal control device described above.

In accordance with the above method, a further aspect of the present invention provides a storage medium comprising: the storage medium has stored therein a plurality of instructions; the plurality of instructions are used for loading and executing the ice and snow removal control method by the processor.

In accordance with the above method, another aspect of the present invention provides an air conditioner, comprising: a processor for executing a plurality of instructions; a memory to store a plurality of instructions; the instructions are stored in the memory, and loaded by the processor and used for executing the ice and snow removal control method.

According to the scheme provided by the invention, whether the ice and snow accumulation condition exists in the unit is judged, and then the ice melting is carried out on the unit when the ice and snow accumulation condition exists, so that the ice and snow accumulation problem of a condenser and other parts of the unit, which is caused by extreme weather or long-time non-starting of the condenser and other parts as a standby machine, can be solved, and the reliability and the safety of the operation of the unit are favorably improved.

Further, according to the scheme of the invention, the heating device modules are additionally arranged on the chassis or the inner surfaces of the periphery of the unit, whether the unit has ice and snow accumulation conditions is judged according to the outdoor environment temperature and the system condensation pressure, and ice melting is carried out when the ice and snow accumulation conditions exist, so that the ice and snow accumulation problem can be solved, and the refrigeration reliability of the unit is ensured.

Furthermore, according to the scheme of the invention, the control modes of the heating device module are switched in the ice melting process, so that the working efficiency is ensured, and the energy consumption of system operation is reduced.

Furthermore, according to the scheme of the invention, the heating device modules are additionally arranged on the chassis or the inner surfaces of the periphery of the unit, whether the unit has ice and snow accumulation conditions is judged according to the air pressure of the condenser and the parameters of the gravity/pressure sensing device at the bottom of the water receiving tray, ice melting is carried out when the ice and snow accumulation conditions exist, the requirements of high control precision and stability of the data center and the air conditioner of the precision computer room for communication can be effectively met, and the reliability and the safety of the operation of the unit are improved.

Furthermore, according to the scheme of the invention, the situation that the heating device module works for a long time can be avoided by judging whether ice and snow are accumulated and starting the heating device module on the premise that the unit is started, so that the energy consumption of the unit is reduced and the safety is improved.

Therefore, according to the scheme of the invention, the heating device modules are additionally arranged on the chassis or the inner surfaces of the periphery of the unit, whether the unit has ice and snow accumulation conditions is judged according to the outdoor environment temperature, the system condensation pressure or the condenser wind pressure and the water receiving tray bottom gravity/pressure sensing device parameters, ice melting is carried out when the ice and snow accumulation conditions exist, the ice and snow accumulation problem of the condenser and other components of the unit caused by extreme weather or long-time non-opening of the unit as a standby machine is solved, and therefore, the defect that the operation of the unit is seriously influenced due to the ice and snow accumulation is overcome, and the beneficial effect that the ice and snow accumulation is not easy to occur and the operation reliability of the unit.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.

Drawings

FIG. 1 is a flow chart illustrating an embodiment of a snow and ice removal control method according to the present invention;

FIG. 2 is a flowchart illustrating an embodiment of determining whether snow or ice is accumulated in an outdoor unit of an air conditioner according to the method of the present invention;

fig. 3 is a schematic flow chart illustrating an embodiment of determining whether ice and snow are accumulated in an outdoor unit of an air conditioner according to the condensing pressure in the method of the present invention;

FIG. 4 is a schematic flow chart illustrating an embodiment of determining whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the pressure or gravity and the condenser wind pressure in the method of the present invention;

FIG. 5 is a schematic flow chart illustrating one embodiment of a method of the present invention for controlling a heating device module to complete a thawing cycle;

FIG. 6 is a schematic flow chart illustrating one embodiment of continuing to monitor and process thawing after a thawing cycle in the method of the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of an ice and snow removal control apparatus according to the present invention;

fig. 8 is a schematic structural view of an air conditioner external unit according to an embodiment of the air conditioner of the present invention;

fig. 9 is a schematic structural view of an external unit of an air conditioner according to another embodiment of the air conditioner of the present invention;

FIG. 10 is a schematic diagram illustrating a control flow of a heating device module system according to an embodiment of the present invention;

fig. 11 is a schematic control flow diagram of a heating device module system according to another embodiment of the air conditioner of the present invention.

The reference numbers in the embodiments of the present invention are as follows, in combination with the accompanying drawings:

1-a condenser; 2-a fan module; 3-a main board control unit; 4-a data acquisition module; 5, a water receiving tray; 6-a heating device module; 7-a liquid level switch; 8-wind pressure switch; 9-weight/pressure sensing means; 102-an obtaining unit; 104-control unit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to an embodiment of the present invention, an ice and snow removal control method is provided to solve the problem of ice and snow accumulation in an air conditioner outdoor unit of a precision machine room, and is applicable to the field of data centers and air conditioning and refrigeration for communication, as shown in fig. 1, which is a schematic flow diagram of an embodiment of the method of the present invention. The ice and snow removal control method may include: step S110 to step S130.

At step S110, an outdoor ambient temperature of an environment to which the air conditioner belongs is acquired, and a state parameter of the air conditioner is acquired.

Optionally, the acquiring of the outdoor ambient temperature of the environment to which the air conditioner belongs in step S110 may include: the outdoor environment temperature of the environment to which the air conditioner belongs is acquired through the data acquisition module 4 arranged at the outdoor unit.

Preferably, when the outdoor unit of the air conditioner is started, the data acquisition module 4 disposed at the outdoor unit acquires the outdoor environment temperature of the environment to which the air conditioner belongs. The outdoor environment temperature is obtained under the condition that the outdoor unit is started, and energy waste caused by collecting the outdoor environment temperature under the condition that the outdoor unit is not opened can be avoided.

For example: the system judges whether ice and snow are accumulated and starts the heating device module on the premise that the unit is started, the situation that the heating device module works for a long time is avoided, and the running energy consumption of the unit is reduced.

Therefore, the outdoor environment temperature of the environment to which the air conditioner belongs is acquired through the data acquisition module, the acquisition mode is simple and convenient, and the acquisition result is accurate.

Alternatively, the state parameter of the air conditioner acquired in step S110 may include any one of the following cases.

In the first case: and monitoring and obtaining the condensation pressure of the refrigerant in the unit pipeline of the air conditioner through a high-voltage switch in the unit of the air conditioner.

In the second case: the pressure or gravity at the bottom of the water pan of the air conditioner is obtained by sensing through a weight or pressure sensing device 9 arranged at the bottom of the water pan of the air conditioner; and monitoring and obtaining the wind pressure of the condenser (namely the difference value of the wind pressure value of the outdoor environment and the wind pressure of the wind passing through the condenser of the outdoor unit) through a wind pressure switch 8 arranged behind the condenser of the outdoor unit.

Therefore, the various state parameters of the air conditioner are acquired through various modes, and whether the outdoor unit has ice and snow accumulation conditions or not can be conveniently determined according to the acquired state parameters in different acquisition modes, so that the ice and snow accumulation conditions can be determined flexibly and accurately.

At step S120, it is determined whether there is an ice and snow accumulation condition in the outdoor unit of the air conditioner according to the outdoor environment temperature and the state parameter.

The state parameters may include: condensing pressure of a refrigerant in a unit pipeline of the air conditioner, or pressure or gravity of the bottom of a water pan of the air conditioner and air pressure of a condenser.

Therefore, the flexibility and convenience for judging whether the ice and snow accumulation condition exists in the outdoor unit or not are facilitated to be improved through the state parameters in various forms.

Optionally, with reference to a flowchart of an embodiment of determining whether the outdoor unit of the air conditioner has the ice and snow accumulation condition in the method of the present invention shown in fig. 2, a specific process of determining whether the outdoor unit of the air conditioner has the ice and snow accumulation condition in step S120 may further include: step S210 to step S230.

Step S210, determining whether the outdoor ambient temperature is less than a preset temperature.

Step S220, if the outdoor environment temperature is lower than the preset temperature, determining whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the condensing pressure when the state parameter may include the condensing pressure of the refrigerant in the unit pipeline of the air conditioner. Alternatively, the first and second electrodes may be,

more optionally, referring to a flowchart of an embodiment of determining whether the outdoor unit of the air conditioner has the ice and snow accumulation condition according to the condensing pressure in the method of the present invention shown in fig. 3, a specific process of determining whether the outdoor unit of the air conditioner has the ice and snow accumulation condition according to the condensing pressure in step S220 may include: step S310 and step S320.

In step S310, it is determined whether the condensing pressure is greater than an upper limit of a first preset pressure range.

Step S320, if the condensing pressure is greater than the upper limit of the first preset pressure range, determining that the outdoor unit of the air conditioner has the ice and snow accumulation condition, and initiating a warning message that the outdoor unit of the air conditioner has the ice and snow accumulation condition.

Therefore, the ice and snow accumulation condition of the outdoor unit is determined and reminded when the condensation pressure is larger than the upper limit of the first preset pressure range, so that the ice and snow accumulation condition can be judged more conveniently.

Step S230, if the outdoor environment temperature is less than the preset temperature, determining whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the pressure or gravity and the air pressure of the condenser under the condition that the state parameter may include the pressure or gravity at the bottom of the water pan of the air conditioner and the air pressure of the condenser.

For example: the air conditioning system monitors the data parameters of outdoor temperature, system condensation pressure or water pan bottom gravity/pressure sensing device pressure and condenser air pressure according to the data acquisition module, and judges whether the outdoor unit has ice and snow accumulation conditions in real time so as to start the heating device module.

Therefore, whether ice and snow accumulation exists in the outdoor unit is determined according to the condensing pressure or the pressure or gravity of the bottom of the water receiving disc and the air pressure of the condenser under the condition that the outdoor environment temperature is lower than the preset temperature, the determination mode is flexible, and the determination result is accurate and reliable.

More optionally, with reference to a flowchart of an embodiment of determining whether there is an ice and snow accumulation condition in the outdoor unit of the air conditioner according to the pressure or gravity and the condenser wind pressure in the method shown in fig. 4, a specific process of determining whether there is an ice and snow accumulation condition in the outdoor unit of the air conditioner according to the pressure or gravity and the condenser wind pressure in step S230 may include: step S410 and step S420.

And step S410, determining whether the condenser wind pressure is greater than the upper limit of a second preset pressure range, and determining whether the pressure or gravity is greater than the upper limit of a third preset pressure range.

And step S420, if the air pressure of the condenser is greater than the upper limit of a second preset pressure range and the pressure or gravity is greater than the upper limit of a third preset pressure range, determining that the outdoor unit of the air conditioner has the ice and snow accumulation condition, and starting a reminding message of the ice and snow accumulation condition of the outdoor unit of the air conditioner.

Therefore, the ice and snow accumulation condition of the outdoor unit is determined and the reminding is initiated under the condition that the air pressure of the condenser is larger than the upper limit of the second preset pressure range and the pressure or gravity is larger than the upper limit of the third preset pressure range, so that the ice and snow accumulation condition can be judged more accurately.

In step S130, if the outdoor unit has ice and snow accumulation, the heating device module is controlled to perform melting processing to reduce or even eliminate the ice and snow accumulation of the outdoor unit, so as to solve the ice and snow accumulation problem of the unit condenser and other components which occurs when the unit condenser and other components are not turned on for a long time due to extreme weather or as a spare unit.

For example: whether ice and snow accumulation exists in the unit is judged firstly, then ice melting is carried out on the unit, and the judgment mode and the control mode are different not only for defrosting of the condenser. The outdoor unit can rapidly complete ice melting and discharge of ice and snow melting water through the control of the system on the heating device module.

For example: through add the heating device module on the off-premises station, air conditioning system judges whether to open the accumulation ice and snow that the heating device module melted the off-premises station and will melt the water and discharge fast through the control operation logic of system through monitoring outdoor ambient temperature, system condensing pressure or condenser wind pressure and water collector gravity/pressure sensing device data, can effectively guarantee the high control accuracy and the stability demand of data center and precision machine room air conditioner for communication, reduces air conditioning system's operation energy consumption.

Therefore, whether the ice and snow accumulation condition exists in the outdoor unit of the air conditioner is determined by combining the outdoor environment temperature and the state parameters of the air conditioner, and then when the ice and snow accumulation condition exists in the outdoor unit, the preset heating device module is controlled to melt the ice and snow accumulation condition, so that the situation that the ice and snow accumulation condition exists in the outdoor unit to influence the unit operation is avoided, and the reliability and the safety of the unit operation are improved.

The arrangement of the heating device module may include at least one of the following situations.

The first case: the heating device module is arranged on a base plate of the air conditioner unit and/or on the inner surfaces of parts around the base plate of the air conditioner unit (namely, the inner surfaces of the parts are close to the condenser of the outdoor unit and the inner surfaces of the front sealing plate and the rear sealing plate of the unit).

For example: the air conditioner outdoor unit structure is characterized in that a heating device module is additionally arranged on a base plate or the inner surfaces of the periphery (the inner surface of the periphery of the unit, namely the inner surface close to an outdoor unit condenser and the inner surfaces of a front sealing plate and a rear sealing plate of the unit) of the unit, and an air conditioning system carries out ice melting by taking the outdoor environment temperature, the system condensing pressure or the condenser air pressure and the gravity/pressure sensing device parameters at the bottom of a water receiving plate as judgment points; the ice and snow accumulation problem of the unit can be solved in cold/severe cold areas when the outdoor unit of the air conditioner of the precision machine room is influenced by weather conditions or the unit needs to be started up and operated as a standby unit for a long time.

The second case: the number of the heating device modules is more than one. And the heating device modules are distributed between a water receiving disc of the air conditioner and the fan. The water receiving tray is obliquely arranged at a set inclination angle so as to facilitate water drainage.

For example: there is the water collector below the unit chassis (the inclination of this water collector can set up to alpha to do benefit to the drainage), when ice and snow melts the water drainage, through control heating device module mode switching to monitor the weight/pressure-sensitive device of water collector water level height or water collector bottom, can in time discharge the snow melting water that melts, prevent under outdoor low temperature condition that the melting water solidifies into ice again and blocks up the drainage, cause the accumulational problem of secondary ice and snow. Such as: the inclination angle can be set to 2-5 degrees, for example, the setting mode can be mainly divided into a fixed type and a movable adjusting type. Fixed inclination is fixed, but the angle of inclination regulation can be realized through the certain end height of adjustment water collector to the movable regulation formula.

The third situation: the heating device module has a waterproof treatment protection device and is configured to be turned on only when an outdoor unit of an air conditioner is turned on.

For example: the outdoor unit structure of the air conditioner is provided with a heating device module, and the heating device module is arranged on the inner surface of a chassis or the periphery of the outdoor unit and has waterproof protection. The water receiving disc and the water melting and draining monitoring device are arranged above the base plate, ice and snow melting water can be drained quickly, and the problem of secondary icing caused by the fact that the melting water is under outdoor low-temperature refrigeration working conditions or extremely cold weather is solved.

For example: the heating device module has waterproof treatment protection, and can be opened only under the condition that the outdoor unit is opened, so that the long-time unit preheating and ice melting are avoided, the operation energy consumption of the outdoor unit of the air conditioner is reduced, and the energy-saving operation is realized.

A fourth scenario: the heating device module may include: a heating device, and/or an ice melting device.

For example: the heating device module carried by the outdoor unit can be an electric heater, an ice melting device or other heating devices.

Therefore, the melting treatment of ice and snow accumulation conditions under various conditions can be met through the heating device modules arranged in various forms, and the melting treatment is flexible and reliable.

Alternatively, the controlling the heating device module to perform the melting process in step S130 may include: controlling the heating device module to complete the process of one melting cycle.

Referring to fig. 5, a flow chart of an embodiment of the method of the present invention for controlling the heating device module to complete a melting cycle is further described, which may include: step S510 and step S520.

Step S510, turning on the heating device module, controlling the heating device module to enter a preheating mode, and preheating in the preheating mode for a first set time. The preheating mode is a mode for controlling the heating device module to operate at a first set power, such as a lower power.

Step S520, after the first set time, if the outdoor unit still has the ice and snow accumulation condition, increasing the heating power of the heating device module to control the heating device module to enter the melting mode, and melting in the melting mode for a second set time to complete a melting cycle.

For example: the air conditioning system has a preheating mode and a snow melting mode for the heating device module, and can effectively improve the snow melting efficiency and ensure that ice and snow melt water is discharged in time. The system reduces the energy consumption of system operation while ensuring the working efficiency by switching the control modes of the heating device module.

From this, accomplish a cycle of melting through control heating device module, can realize weakening or even eliminating the ice and snow condition of piling up to avoid ice and snow to pile up the problem that the condition seriously and influence the unit operation, reliable and safety.

Further optionally, the controlling the heating device module to perform the melting process in step S130 may further include: and after one thawing period, continuing the process of monitoring and processing the thawing condition.

Referring to the schematic flow chart of an embodiment of the method of the present invention shown in fig. 6, which is used for continuously monitoring and processing the thawing condition after a thawing cycle, a specific process of continuously monitoring and processing the thawing condition after a thawing cycle is further described, which may include: step S610 and step S620.

Step S610, if the condensing pressure after the end of a melting cycle is greater than or equal to the lower limit of the first preset pressure range and less than or equal to the upper limit of the first preset pressure range within a third set time period, or if the state parameter includes the condenser wind pressure, the condenser wind pressure after the end of a melting cycle is greater than or equal to the lower limit of the second preset pressure range and less than or equal to the upper limit of the second preset pressure range within the third set time period, controlling the heating device module to return to the preheating mode, and operating in the preheating mode for a fourth set time period. Otherwise, if the condensing pressure after the end of one melting period does not meet the conditions that the condensing pressure is greater than or equal to the lower limit of the first preset pressure range and is less than or equal to the upper limit of the first preset pressure range in a third set time period, or the condenser wind pressure after the end of one melting period does not meet the conditions that the condensing pressure is greater than or equal to the lower limit of the third preset pressure range and is less than or equal to the upper limit of the third preset pressure range in the third set time period, continuing to enter the next melting period for operation.

Step S620, after a fourth preset duration, if the state parameter may include a condensing pressure, if the liquid level height of the water tray of the air conditioner is greater than or equal to the preset height, or if the state parameter may include a pressure or a gravity at the bottom of the water tray of the air conditioner, if the pressure or the gravity at the bottom of the water tray of the air conditioner is less than a lower limit of a third preset pressure range or greater than an upper limit of the third preset pressure range, initiating a message to prompt a water-melting and draining failure, and controlling the heating device module to continue to operate in the preheating mode until the liquid level height of the water tray is less than the preset height, or the pressure or the gravity at the bottom of the water tray of the air conditioner is less than a lower limit of the third preset pressure range or greater than the upper limit of the third preset pressure range (that the pressure or the gravity at the bottom of the water tray of the air conditioner does not satisfy the lower limit of the third preset pressure range, or the gravity, And less than or equal to the upper limit of the third preset pressure range), the heating device module is turned off, and the reminding of the water melting and draining fault is eliminated. If the liquid level height of the water pan of the air conditioner is smaller than the preset height, or the pressure or gravity at the bottom of the water pan of the air conditioner is smaller than the lower limit of the third preset pressure range, or is larger than the upper limit of the third preset pressure range (namely the pressure or gravity at the bottom of the water pan of the air conditioner does not meet the lower limit of the third preset pressure range or larger and is smaller than or equal to the upper limit of the third preset pressure range), the heating device module is closed.

For example: the problem of ice and snow accumulation of the outdoor unit is solved by additionally arranging a heating device module and a system logic control method on the basis of a conventional structure. The outdoor unit may be composed of a condenser 1, a fan module 2, a main board control unit 3, a data acquisition module 4, a water pan 5 (with an inclination angle α), a heating device module 6, and a liquid level switch 7, as shown in fig. 8. In fig. 8, the condenser 1 is a heat exchange component, the fan module 2 is a device for supplying air, and the data acquisition module 4 acquires parameters such as outdoor environment temperature, the liquid level height of the water pan detected by the liquid level switch 7 and system condensation pressure. The mainboard control unit 3 monitors the ice and snow accumulation condition through the acquired data, firstly judges whether the ice and snow accumulation condition occurs in the unit according to the control flow chart of fig. 10, and finishes the melting of the ice and snow accumulated in the unit by starting and stopping and switching the control modes of the system control heating module device. And then, in order to ensure that the ice and snow melting water in the water receiving tray is not influenced by extreme cold weather, secondary freezing needs to ensure the quick discharge of the melting water. The system completes quick drainage through the preheating mode of the heating device module and the monitoring of the water level height of the water receiving tray, and effectively prevents secondary icing. The outdoor unit monitors the parameter change conditions of outdoor environment temperature and system condensation pressure in real time through the data acquisition module. For example: the interior of the unit is generally provided with a monitoring device of the condensation pressure of the system, such as a high-voltage switch.

The system control flow chart may be as shown in fig. 10, and the control flow may include:

and 11, when the system monitors that the outdoor environment temperature T is less than 0 ℃, the condensation pressure of the system is more than P2, the system sends an ice and snow accumulation alarm, the heating device module is started to a preheating mode, and the preheating duration time is T1 (the value is 2-5 min). Such as: after the preheating mode, that is, the determination condition of the system on the parameters in the flowchart is satisfied, the heating device module is turned on to perform heating in a low power mode, such as partial turn-on or low load rate operation of the heating device.

Step 12, after the duration time T1 of the preheating mode, if the judgment condition still meets the starting condition of the heating device module, entering an ice melting mode, wherein the duration time T2 (the value is 5-15 min) is a period; the system monitors the condensing pressure in real time, after one ice melting mode period is finished, if the condition that the condensing pressure is greater than or equal to P1 and less than or equal to P2 is continuously met for 30S, the heating device module returns to the preheating mode, the duration time is T3 (the value is 2-5 min), and otherwise, the system continues to enter the next ice melting mode period until the monitoring condition meets the requirement. Such as: the ice melting mode may be a preheating mode, that is, after the system meets the requirements for the determination conditions of the parameters in the flowchart, the heating device module is turned on to heat in a high power mode, for example, the heating device is turned on completely to operate at a full load rate.

And step 13, after the heating device module enters a preheating mode from an ice melting mode, the duration time T3 is a period, in order to prevent ice and snow melting water in the unit from being discharged in time under the condition of low-temperature refrigeration outdoors, so that secondary icing of the unit is caused, the system monitors the liquid level height H of the water pan by using a liquid level switch, if the liquid level height is abnormal (H is more than or equal to a), a melting water discharging fault alarm is sent, the heating device module continuously works (namely, the preheating mode is continuously executed) until the system monitors that the liquid level height of the water pan is normal, and the alarm is turned off.

For another example: the problem of ice and snow accumulation of the outdoor unit is solved by additionally arranging a heating device module and a system logic control method on the basis of a conventional structure. The outdoor unit may be composed of a condenser 1, a fan module 2, a main board control unit 3, a data acquisition module 4, a water pan 5 (with an inclination angle α), a heating device module 6, a wind pressure switch 8, and a weight/pressure sensing device 9, as shown in fig. 9. In fig. 9, the condenser 1 is a heat exchange component, the fan module 2 is a device for supplying air, and the data acquisition module 4 acquires parameters such as outdoor environment temperature, water pan bottom pressure monitored by the gravity/pressure sensing device 8, and difference between the outdoor environment pressure acquired by the air pressure switch 8 and the pressure of air after passing through the condenser. The mainboard control unit 3 monitors the collected data, firstly judges whether the ice and snow accumulation condition of the unit occurs according to the control flow chart of fig. 11, and finishes the ablation of the ice and snow accumulated by the unit by controlling the start-stop and control mode switching of the heating module device through the system; secondly, in order to ensure that ice and snow melting water in the water receiving tray is not influenced by extreme cold weather and is secondarily frozen, the quick discharge of the melting water needs to be ensured; the system completes quick drainage through the preheating mode of the heating device module and the monitoring of the bottom pressure (namely weight change) of the water receiving tray, and effectively prevents secondary icing. The outdoor unit monitors outdoor environment temperature, condenser wind pressure and parameter change conditions of a gravity/pressure sensing device at the bottom of the water receiving disc in real time through the data acquisition module 4, wherein a condenser wind pressure sensor, namely a wind pressure switch 8, is arranged on the condenser close to the chassis.

The system control flow chart is shown in fig. 11, and the control flow may include:

and 21, when the system monitors that the outdoor environment temperature T is less than 0 ℃, the pressure difference of the condenser (the pressure difference of wind inside and outside the condenser, which can be monitored by a wind pressure switch 8) is greater than P4, and the parameters of the gravity/pressure sensing device are greater than P6, the system sends an ice and snow accumulation alarm, the heating device module is started to a preheating mode, and the preheating duration is T1 (the value is 2-5 min). The system condensation pressure is the condensation pressure of a refrigerant in a unit pipeline and is monitored by a high-voltage switch in the unit; the condenser pressure difference is the difference value of the air pressure value of the outdoor environment and the air pressure of the air passing through the condenser of the outdoor unit and is monitored by the air pressure switch 8.

Step 22, after the duration time T1 of the preheating mode, if the judgment condition still meets the starting condition of the heating device module, entering an ice melting mode, wherein the duration time T2 (the value is 5-15 min) is a period; the system monitors the wind pressure parameter of the condenser in real time, after one ice melting mode period is finished, if the condition that the wind pressure of the condenser is greater than or equal to P3 and less than or equal to P4 is continuously met for 30S, the heating device module returns to the preheating mode, the duration time is T3 (the value is 2-5 min), and otherwise, the system continues to enter the next ice melting mode period until the monitoring condition meets the requirement.

And step 23, after the heating device module enters a preheating mode from an ice melting mode, the duration time T3 is a period, in order to prevent ice and snow melting water in the unit from being discharged in time under the condition of low-temperature outdoor refrigeration, so that secondary icing of the unit is caused, the system monitors by using the pressure parameter of the gravity/pressure sensing device at the bottom of the water pan, if the fed back pressure parameter is abnormal (more than P6), a molten water drainage fault alarm is sent, the heating device module continuously works until the system monitors that the parameter of the gravity/pressure sensing device at the bottom of the water pan is normal, and then the alarm is closed, and the alarm is cleared.

Therefore, the melting condition is continuously monitored and processed after a melting period, the thoroughness and safety of melting and processing the ice and snow accumulation condition can be guaranteed, the normal operation of the unit is further reliably and safely guaranteed, and the refrigerating effect and the unit operation safety are guaranteed.

Through a large number of tests, the technical scheme of the embodiment is adopted, whether the ice and snow accumulation condition exists in the unit is judged, ice melting is carried out on the unit when the ice and snow accumulation condition exists, the ice and snow accumulation problem of the condenser and other parts of the unit caused by extreme weather or long-time non-opening of the condenser and other parts as a standby machine can be solved, and the reliability and the safety of the operation of the unit are favorably improved.

According to an embodiment of the invention, an ice and snow removal control device corresponding to the ice and snow removal control method is also provided. Referring to fig. 7, a schematic diagram of an embodiment of the apparatus of the present invention is shown. The ice and snow removal control device may include: an acquisition unit 102 and a control unit 104.

In an optional example, the obtaining unit 102 may be configured to obtain an outdoor ambient temperature of an environment to which the air conditioner belongs, and obtain a status parameter of the air conditioner. The specific functions and processes of the acquiring unit 102 are referred to in step S110.

Alternatively, the acquiring unit 102 may acquire the outdoor ambient temperature of the environment to which the air conditioner belongs, and may include: the obtaining unit 102 may be further configured to obtain an outdoor environment temperature of an environment to which the air conditioner belongs through a data collecting module 4 disposed at the outdoor unit.

Alternatively, the acquiring unit 102 may acquire the state parameter of the air conditioner, which may include any of the following cases.

In the first case: the obtaining unit 102 may be further configured to monitor and obtain a condensation pressure of a refrigerant in a unit pipeline of the air conditioner through a high-voltage switch in the unit of the air conditioner.

In the second case: the obtaining unit 102 may be further configured to obtain, through a weight or pressure sensing device 9 disposed at the bottom of a water pan of an air conditioner, a pressure or gravity at the bottom of the water pan of the air conditioner through sensing; and monitoring and obtaining the wind pressure of the condenser (namely the difference value of the wind pressure value of the outdoor environment and the wind pressure of the wind passing through the condenser of the outdoor unit) through a wind pressure switch 8 arranged behind the condenser of the outdoor unit.

In an alternative example, the control unit 104 may be configured to determine whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the outdoor environment temperature and the state parameter. The specific function and processing of the control unit 104 are referred to in step S120.

Alternatively, the determining, by the control unit 104, whether there is ice and snow accumulation in the outdoor unit of the air conditioner may include:

the control unit 104 may be further configured to determine whether the outdoor environment temperature is less than a preset temperature. The specific functions and processes of the control unit 104 are also referred to in step S210.

The control unit 104 may be further configured to determine whether there is an ice and snow accumulation condition in the outdoor unit of the air conditioner according to the condensing pressure when the state parameter may include the condensing pressure of the refrigerant in the unit pipeline of the air conditioner if the outdoor environment temperature is lower than the preset temperature. The specific functions and processes of the control unit 104 are also referred to in step S220.

More optionally, the determining, by the control unit 104, whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the condensing pressure may include:

the control unit 104 may be further configured to determine whether the condensing pressure is greater than an upper limit of a first preset pressure range. The specific functions and processes of the control unit 104 are also referred to in step S310.

The control unit 104 may be further specifically configured to determine that the outdoor unit of the air conditioner has the ice and snow accumulation condition and initiate a warning message that the outdoor unit of the air conditioner has the ice and snow accumulation condition if the condensing pressure is greater than the upper limit of the first preset pressure range. The specific functions and processes of the control unit 104 are also referred to in step S320.

The control unit 104 may be further configured to determine whether there is an ice and snow accumulation condition in the outdoor unit of the air conditioner according to the pressure or the gravity of the bottom of the water tray of the air conditioner and the air pressure of the condenser if the outdoor environment temperature is lower than the preset temperature, where the state parameter may include the pressure or the gravity of the bottom of the water tray of the air conditioner and the air pressure of the condenser. The specific function and processing of the control unit 104 are also referred to in step S230.

More optionally, the determining, by the control unit 104, whether there is ice and snow accumulation in the outdoor unit of the air conditioner according to the pressure or gravity and the condenser wind pressure may include:

the control unit 104 may be further specifically configured to determine whether the condenser wind pressure is greater than an upper limit of a second preset pressure range, and determine whether the pressure or gravity is greater than an upper limit of a third preset pressure range. The specific functions and processes of the control unit 104 are also referred to in step S410.

The control unit 104 may be further specifically configured to determine that the outdoor unit of the air conditioner has an ice and snow accumulation condition and initiate a warning message that the outdoor unit of the air conditioner has the ice and snow accumulation condition if the air pressure of the condenser is greater than an upper limit of a second preset pressure range and the pressure or gravity is greater than an upper limit of a third preset pressure range. The specific function and processing of the control unit 104 are also referred to in step S420. Therefore, the ice and snow accumulation condition of the outdoor unit is determined and the reminding is initiated under the condition that the air pressure of the condenser is larger than the upper limit of the second preset pressure range and the pressure or gravity is larger than the upper limit of the third preset pressure range, so that the ice and snow accumulation condition can be judged more accurately.

In an optional example, the control unit 104 may be further configured to control the heating device module to perform melting processing if the outdoor unit has ice and snow accumulation, so as to reduce or even eliminate the ice and snow accumulation of the outdoor unit, and solve the ice and snow accumulation problem of the unit condenser and other components that occurs when the unit condenser is not turned on for a long time due to extreme weather or as a spare machine. The specific function and processing of the control unit 104 are also referred to in step S130.

Optionally, the controlling unit 104 controls the heating device module to perform the melting process, and may include: the process of controlling the heating device module to complete a melting cycle may specifically be as follows:

the control unit 104 may be further configured to start the heating device module, control the heating device module to enter a preheating mode, and preheat the heating device module in the preheating mode for a first set duration. The specific functions and processes of the control unit 104 are also referred to in step S510. The preheating mode is a mode for controlling the heating device module to operate at a first set power, such as a lower power.

The control unit 104 may be further configured to, after a first set time period, if the outdoor unit still has an ice and snow accumulation condition, increase the heating power of the heating device module to control the heating device module to enter a melting mode, and perform melting operation in the melting mode for a second set time period to complete a melting cycle. The specific functions and processes of the control unit 104 are also referred to in step S520.

Further optionally, the controlling unit 104 controls the heating device module to perform the melting process, and may further include: the process of monitoring and processing the thawing status after a thawing cycle may specifically be as follows:

the control unit 104 may be further configured to, under the condition that the state parameter may include a condensing pressure, if the condensing pressure after one melting period is greater than or equal to a lower limit of the first preset pressure range and less than or equal to an upper limit of the first preset pressure range in a third set time period, or under the condition that the state parameter may include a condenser air pressure, control the heating device module to return to the preheating mode and operate for a fourth set time period in the preheating mode, where the condenser air pressure after one melting period is greater than or equal to a lower limit of the second preset pressure range and less than or equal to an upper limit of the second preset pressure range in the third set time period. Otherwise, if the condensing pressure after the end of one melting period does not meet the conditions that the condensing pressure is greater than or equal to the lower limit of the first preset pressure range and is less than or equal to the upper limit of the first preset pressure range in a third set time period, or the condenser wind pressure after the end of one melting period does not meet the conditions that the condensing pressure is greater than or equal to the lower limit of the third preset pressure range and is less than or equal to the upper limit of the third preset pressure range in the third set time period, continuing to enter the next melting period for operation. The specific functions and processes of the control unit 104 are also referred to in step S610.

The control unit 104 may be further specifically configured to, after a fourth preset duration, initiate a message of reminding a water-melting drainage fault if the liquid level height of the water tray of the air conditioner is greater than or equal to the preset height under the condition that the state parameter may include the condensing pressure, or if the pressure or the gravity at the bottom of the water tray of the air conditioner is less than a lower limit of a third preset pressure range or greater than an upper limit of the third preset pressure range under the condition that the state parameter may include the pressure or the gravity at the bottom of the water tray of the air conditioner, and control the heating device module to continue to operate in the preheating mode until the liquid level height of the water tray is less than the preset height, or the pressure or the gravity at the bottom of the water tray of the air conditioner is less than a lower limit of the third preset pressure range or greater than an upper limit of the third preset pressure range (that is the pressure or the gravity at the bottom of the water tray of the air conditioner does not satisfy the lower limit of the third preset, And less than or equal to the upper limit of the third preset pressure range), the heating device module is turned off, and the reminding of the water melting and draining fault is eliminated. If the liquid level height of the water pan of the air conditioner is smaller than the preset height, or the pressure or gravity at the bottom of the water pan of the air conditioner is smaller than the lower limit of the third preset pressure range, or is larger than the upper limit of the third preset pressure range (namely the pressure or gravity at the bottom of the water pan of the air conditioner does not meet the lower limit of the third preset pressure range or larger and is smaller than or equal to the upper limit of the third preset pressure range), the heating device module is closed. The specific functions and processes of the control unit 104 are also referred to in step S620.

Since the processes and functions implemented by the apparatus of this embodiment substantially correspond to the embodiments, principles and examples of the method shown in fig. 1 to fig. 6, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and the heating device modules are additionally arranged on the chassis or on the inner surfaces of the periphery of the unit, so that whether the ice and snow accumulation condition exists in the unit is judged according to the outdoor environment temperature and the system condensation pressure, and ice melting is carried out when the ice and snow accumulation condition exists, thus the ice and snow accumulation problem can be solved, and the refrigeration reliability of the unit is ensured.

According to an embodiment of the invention, an air conditioner corresponding to the ice and snow removal control device is also provided. The air conditioner may include: the ice and snow removal control device described above.

The defrosting of the heat pump heating unit and the comfort air conditioner is generally the defrosting of a condenser, and the scope of the scheme of the invention is the problem of ice and snow accumulation of the condenser and other parts of the unit due to extreme weather or long-time non-starting of the unit as a standby machine. The air conditioner of the precise machine room is generally a single cooling unit, an external machine does not have a heating protection device, the air conditioner of the precise machine room needs continuous refrigeration operation all the year around due to the particularity of use occasions, the requirement on the control precision of the temperature and the humidity is high, the cooling in the machine room is guaranteed, and the service life of equipment is prolonged.

For example: the standby polling of the unit can avoid the unit from running all the time, prolong the service life of the unit, and when the unit breaks down, the system can automatically switch to start the standby unit to run; if no group control system exists, the operation and maintenance personnel can start and stop the switch manually.

In an optional embodiment, the invention provides an air conditioner outdoor unit structure and a control method, which are applicable to the field of data centers and communication air conditioning refrigeration and aim to solve the problem of ice and snow accumulation of an air conditioner outdoor unit of a precision machine room.

In an optional example, the air conditioner outdoor unit structure is additionally provided with a heating device module on a chassis or on the inner surfaces of the periphery of the unit (namely the inner surface close to an outdoor unit condenser and the inner surfaces of a front sealing plate and a rear sealing plate of the unit), and an air conditioning system carries out ice melting according to the outdoor environment temperature, the system condensation pressure or the condenser wind pressure and the gravity/pressure sensing device parameters at the bottom of a water receiving tray as judgment points; the ice and snow accumulation problem of the unit can be solved in cold/severe cold areas when the outdoor unit of the air conditioner of the precision machine room is influenced by weather conditions or the unit needs to be started up and operated as a standby unit for a long time.

According to the scheme of the invention, whether the ice and snow accumulation condition exists in the unit is judged firstly, then the ice melting is carried out on the unit, and the judgment mode and the control mode are different not only for defrosting of the condenser.

Optionally, the outdoor unit structure of the air conditioner has a heating device module, and the heating device module is disposed on the inner surface of the chassis or the periphery of the outdoor unit and has waterproof protection for the outdoor unit. The water receiving disc and the water melting and draining monitoring device are arranged above the base plate, ice and snow melting water can be drained quickly, and the problem of secondary icing caused by the fact that the melting water is under outdoor low-temperature refrigeration working conditions or extremely cold weather is solved.

Optionally, the air conditioning system monitors data parameters of outdoor temperature, system condensing pressure or water pan bottom gravity/pressure sensing device pressure and condenser air pressure according to the data acquisition module, and judges whether the outdoor unit has ice and snow accumulation conditions in real time so as to start the heating device module. The outdoor unit can rapidly complete ice melting and discharge of ice and snow melting water through the control of the system on the heating device module.

The system judges whether ice and snow are accumulated and starts the heating device module on the premise that the unit is started, the situation that the heating device module works for a long time is avoided, and the unit operation energy consumption is reduced.

Optionally, the air conditioning system has a preheating mode and a snow melting mode for the heating device module, so that the snow melting efficiency can be effectively improved, and the ice, snow and water can be discharged in time. The system reduces the energy consumption of system operation while ensuring the working efficiency by switching the control modes of the heating device module.

Optionally, there is the water collector (the inclination of this water collector can set up to alpha to do benefit to the drainage) unit chassis below, when ice and snow melts the water drainage, through control heating device module mode switching to monitor the weight/pressure-sensitive device of water collector water level height or water collector bottom, can in time discharge the snow melting water that melts, prevent under outdoor low temperature condition, melt the water and solidify into ice again and block up the drainage, cause the accumulational problem of secondary ice and snow.

For example: the inclination angle can be set to 2-5 degrees, for example, the setting mode can be mainly divided into a fixed type and a movable adjusting type. Fixed inclination is fixed, but the angle of inclination regulation can be realized through the certain end height of adjustment water collector to the movable regulation formula.

Therefore, the invention designs an air conditioner outdoor unit structure and a control method, the heating device module is additionally arranged on the outdoor unit, the air conditioner system monitors the outdoor environment temperature, the system condensation pressure or the condenser wind pressure and the water pan gravity/pressure sensing device data, whether the heating device module is started to melt ice and snow accumulated on the outdoor unit and quickly discharge the melted water is judged through the control operation logic of the system, the high control precision and stability requirements of a data center and a precision machine room air conditioner for communication can be effectively guaranteed, and the operation energy consumption of the air conditioner system is reduced.

In an alternative embodiment, a specific implementation process of the scheme of the present invention can be exemplarily described with reference to the examples shown in fig. 8 to 11.

In an alternative embodiment, in the solution of the present invention, the problem of ice and snow accumulation of the outdoor unit is solved by adding a heating device module and a system logic control method on the basis of a conventional structure for the data center and the outdoor unit of the precision machine room for communication. The outdoor unit may be composed of a condenser 1, a fan module 2, a main board control unit 3, a data acquisition module 4, a water pan 5 (with an inclination angle α), a heating device module 6, and a liquid level switch 7, as shown in fig. 8.

In fig. 8, the condenser 1 is a heat exchange component, the fan module 2 is a device for supplying air, and the data acquisition module 4 acquires parameters such as outdoor environment temperature, the liquid level height of the water pan detected by the liquid level switch 7 and system condensation pressure. The mainboard control unit 3 monitors the ice and snow accumulation condition through the acquired data, firstly judges whether the ice and snow accumulation condition occurs in the unit according to the control flow chart of fig. 10, and finishes the melting of the ice and snow accumulated in the unit by starting and stopping and switching the control modes of the system control heating module device. And then, in order to ensure that the ice and snow melting water in the water receiving tray is not influenced by extreme cold weather, secondary freezing needs to ensure the quick discharge of the melting water. The system completes quick drainage through the preheating mode of the heating device module and the monitoring of the water level height of the water receiving tray, and effectively prevents secondary icing.

The outdoor unit monitors the parameter change conditions of outdoor environment temperature and system condensation pressure in real time through the data acquisition module.

For example: the interior of the unit is generally provided with a monitoring device of the condensation pressure of the system, such as a high-voltage switch.

Alternatively, the system control flow chart may be as shown in fig. 10, and the control flow may include:

and 11, when the system monitors that the outdoor environment temperature T is less than 0 ℃, the condensation pressure of the system is more than P2, the system sends an ice and snow accumulation alarm, the heating device module is started to a preheating mode, and the preheating duration time is T1 (the value is 2-5 min).

For example: after the preheating mode, that is, the determination condition of the system on the parameters in the flowchart is satisfied, the heating device module is turned on to perform heating in a low power mode, such as partial turn-on or low load rate operation of the heating device.

Step 12, after the duration time T1 of the preheating mode, if the judgment condition still meets the starting condition of the heating device module, entering an ice melting mode, wherein the duration time T2 (the value is 5-15 min) is a period; the system monitors the condensing pressure in real time, after one ice melting mode period is finished, if the condition that the condensing pressure is greater than or equal to P1 and less than or equal to P2 is continuously met for 30S, the heating device module returns to the preheating mode, the duration time is T3 (the value is 2-5 min), and otherwise, the system continues to enter the next ice melting mode period until the monitoring condition meets the requirement.

Optionally, the activation condition of the heating device may include: when the outdoor environment temperature T is less than 0 ℃, and the system condensation pressure is more than P2; may also include: when the outdoor environment temperature T is less than 0 ℃, the gravity/pressure sensing device is more than P6, and the air pressure of the condenser is more than P4.

For example: the ice melting mode may be a preheating mode, that is, after the system meets the requirements for the determination conditions of the parameters in the flowchart, the heating device module is turned on to heat in a high power mode, for example, the heating device is turned on completely to operate at a full load rate.

Optionally, the heating device module has waterproof treatment protection, and can be opened only when the outdoor unit is opened, so that long-time preheating and ice melting of the unit are avoided, the operation energy consumption of the outdoor unit of the air conditioner is reduced, and energy-saving operation is realized. That is, the heating device module has waterproof protection, and the heating device module is only opened when the outdoor unit is opened.

In an alternative embodiment, in the solution of the present invention, the problem of ice and snow accumulation of the outdoor unit is solved by adding a heating device module and a system logic control method on the basis of a conventional structure for the data center and the outdoor unit of the precision machine room for communication. The outdoor unit may be composed of a condenser 1, a fan module 2, a main board control unit 3, a data acquisition module 4, a water pan 5 (with an inclination angle α), a heating device module 6, a wind pressure switch 8, and a weight/pressure sensing device 9, as shown in fig. 9.

In fig. 9, the condenser 1 is a heat exchange component, the fan module 2 is a device for supplying air, and the data acquisition module 4 acquires parameters such as outdoor environment temperature, water pan bottom pressure monitored by the gravity/pressure sensing device 8, and difference between the outdoor environment pressure acquired by the air pressure switch 8 and the pressure of air after passing through the condenser. The mainboard control unit 3 monitors the collected data, firstly judges whether the ice and snow accumulation condition of the unit occurs according to the control flow chart of fig. 11, and finishes the ablation of the ice and snow accumulated by the unit by controlling the start-stop and control mode switching of the heating module device through the system; secondly, in order to ensure that ice and snow melting water in the water receiving tray is not influenced by extreme cold weather and is secondarily frozen, the quick discharge of the melting water needs to be ensured; the system completes quick drainage through the preheating mode of the heating device module and the monitoring of the bottom pressure (namely weight change) of the water receiving tray, and effectively prevents secondary icing.

The outdoor unit monitors outdoor environment temperature, condenser wind pressure and parameter change conditions of a gravity/pressure sensing device at the bottom of the water receiving disc in real time through the data acquisition module 4, wherein a condenser wind pressure sensor, namely a wind pressure switch 8, is arranged on the condenser close to the chassis.

Alternatively, as shown in fig. 11, the system control flow may include:

and 21, when the system monitors that the outdoor environment temperature T is less than 0 ℃, the pressure difference of the condenser (the pressure difference of wind inside and outside the condenser, which can be monitored by a wind pressure switch 8) is greater than P4, and the parameters of the gravity/pressure sensing device are greater than P6, the system sends an ice and snow accumulation alarm, the heating device module is started to a preheating mode, and the preheating duration is T1 (the value is 2-5 min).

The system condensation pressure is the condensation pressure of a refrigerant in a unit pipeline and is monitored by a high-voltage switch in the unit; the condenser pressure difference is the difference value of the air pressure value of the outdoor environment and the air pressure of the air passing through the condenser of the outdoor unit and is monitored by the air pressure switch 8. After ice and snow are accumulated, the condenser is blocked, the pressure difference of the condenser is increased, the air volume passing through the condenser is reduced, the heat exchange effect is worsened, and the condensing pressure of the system is increased. P2 and P4 may not have a correspondence.

Optionally, the heating device module has waterproof treatment protection, and can be opened only when the outdoor unit is opened, so that long-time preheating and ice melting of the unit are avoided, the operation energy consumption of the outdoor unit of the air conditioner is reduced, and energy-saving operation is realized.

In the examples shown in fig. 8 and 9, the detection and determination conditions for the outdoor unit ice and snow accumulation alarm are different; the start-stop and mode switching conditions of the heating device module by the mainboard control unit 3 are different; in order to prevent the secondary icing problem of ice and snow melting water in the water receiving tray under the condition of extremely cold weather, the drainage in the rapid water receiving tray needs to be ensured, and the monitoring conditions of the water level height under the condition of water melting and drainage in the water receiving tray are different.

In an alternative embodiment, the data center and the outdoor unit of the precision air conditioner for communication are not limited in structure, and may be in a vertical, horizontal or other structure.

In an alternative embodiment, the outdoor unit-mounted heater module may be an electric heater, a de-icer, or other heating device.

Optionally, the installation position of the heating device module may be on the inner surface of the unit chassis, the surrounding structure, or other parts of the unit.

For example: if the water collector is arranged at the position close to the inner surface of the condenser and is arranged at the middle position of the water collector and the fan of the unit in a mode of installing a support frame.

In an alternative embodiment, the condensing pressure, the condenser wind pressure, the water pan monitoring height and the gravity/pressure parameter of the system and the continuous working time of the heating device module in each mode after being started can be adjusted according to the actual conditions, so that the actual use requirements are met, and no limitation is imposed.

For example: namely, parameter setting is finished aiming at the actual running condition of the unit through a control interface on the main board control unit.

In an alternative specific example, the number of the heating device modules in the unit can be one, or a plurality of heating device modules can be arranged according to actual use requirements.

In an alternative specific example, the water receiving tray liquid level height monitoring device can be a liquid level switch, and can also be other devices with similar functions.

Since the processing and functions of the air conditioner of this embodiment are basically corresponding to the embodiments, principles and examples of the apparatus shown in fig. 7, the description of this embodiment is not given in detail, and reference may be made to the related descriptions in the embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and the control modes of the heating device module are switched in the ice melting process, so that the working efficiency is ensured, and the energy consumption of system operation is reduced.

According to an embodiment of the present invention, there is also provided a storage medium corresponding to the deicing control method. The storage medium may include: the storage medium has stored therein a plurality of instructions; the plurality of instructions are used for loading and executing the ice and snow removal control method by the processor.

Since the processing and functions implemented by the storage medium of this embodiment substantially correspond to the embodiments, principles, and examples of the methods shown in fig. 1 to fig. 6, details are not described in the description of this embodiment, and reference may be made to the related descriptions in the foregoing embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention is adopted, and the heating device modules are additionally arranged on the chassis or the inner surfaces around the chassis of the unit, so that whether ice and snow accumulation exists in the unit is judged according to the air pressure of the condenser and the parameters of the gravity/pressure sensing device at the bottom of the water receiving tray, ice melting is carried out when the ice and snow accumulation exists, the requirements of high control precision and stability of the air conditioner of the data center and the precision machine room for communication can be effectively met, and the reliability and the safety of the operation of the unit are improved.

According to an embodiment of the present invention, there is also provided an air conditioner corresponding to the ice and snow removal control method. The air conditioner may include: a processor for executing a plurality of instructions; a memory to store a plurality of instructions; the instructions are stored in the memory, and loaded by the processor and used for executing the ice and snow removal control method.

Since the processing and functions of the air conditioner of this embodiment are basically corresponding to the embodiments, principles and examples of the methods shown in fig. 1 to fig. 6, the description of this embodiment is not detailed, and reference may be made to the related descriptions in the embodiments, which are not described herein again.

Through a large number of tests, the technical scheme of the invention can avoid the situation that the heating device module works for a long time by judging whether ice and snow are accumulated and starting the heating device module on the premise that the unit is started, thereby reducing the energy consumption of the unit operation and improving the safety.

In summary, it is readily understood by those skilled in the art that the advantageous modes described above can be freely combined and superimposed without conflict.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it is obvious to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An ice and snow removal control method is characterized by comprising the following steps:

acquiring the outdoor environment temperature of the environment to which the air conditioner belongs, and acquiring the state parameters of the air conditioner; the state parameters comprise: condensing pressure of a refrigerant in a unit pipeline of the air conditioner, or pressure or gravity of the bottom of a water pan of the air conditioner and air pressure of a condenser;

determining whether the outdoor unit of the air conditioner has ice and snow accumulation according to the outdoor environment temperature and the state parameters, wherein the method comprises the following steps: determining whether the outdoor environment temperature is less than a preset temperature; if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the condensing pressure under the condition that the state parameter comprises the condensing pressure of a refrigerant in a unit pipeline of the air conditioner; or if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the pressure or gravity and the wind pressure of the condenser under the condition that the state parameters comprise the pressure or gravity at the bottom of a water pan of the air conditioner and the wind pressure of the condenser;

if the outdoor unit has ice and snow accumulation, controlling a heating device module to perform melting treatment, comprising: starting the heating device module, controlling the heating device module to enter a preheating mode, and preheating and operating for a first set time length in the preheating mode; after the first set time, if the outdoor unit still has the ice and snow accumulation condition, the heating power of the heating device module is increased to control the heating device module to enter a melting mode, and the outdoor unit is melted and operated for a second set time in the melting mode to complete a melting period.

2. The method of claim 1, wherein,

the heating device module is arranged on a chassis of the air conditioning unit and/or on the inner surface of parts around the chassis of the air conditioning unit;

and/or the presence of a gas in the gas,

the number of the heating device modules is more than one; the heating device modules are distributed between a water receiving disc of the air conditioner and the fan; the water receiving tray is obliquely arranged at a set inclination angle;

and/or the presence of a gas in the gas,

the heating device module has a waterproof processing protection device and is configured to be opened only when an outdoor unit of the air conditioner is opened;

and/or the presence of a gas in the gas,

the heating device module includes: a heating device, and/or an ice melting device.

3. The method according to claim 1 or 2, wherein,

acquiring the outdoor environment temperature of the environment to which the air conditioner belongs, wherein the outdoor environment temperature comprises the following steps:

acquiring the outdoor environment temperature of the environment to which the air conditioner belongs through a data acquisition module (4) arranged at the outdoor unit;

and/or the presence of a gas in the gas,

acquiring state parameters of the air conditioner, comprising the following steps:

monitoring and obtaining the condensation pressure of a refrigerant in a unit pipeline of the air conditioner through a high-voltage switch in the unit of the air conditioner; alternatively, the first and second electrodes may be,

the pressure or gravity at the bottom of the water pan of the air conditioner is obtained by sensing through a weight or pressure sensing device (9) arranged at the bottom of the water pan of the air conditioner; and monitoring and obtaining the air pressure of the condenser through an air pressure switch (8) arranged behind the condenser of the outdoor unit.

4. The method of claim 1, wherein,

determining whether the ice and snow accumulation condition exists in the outdoor unit of the air conditioner according to the condensation pressure, and the method comprises the following steps:

determining whether the condensing pressure is greater than an upper limit of a first preset pressure range;

if the condensing pressure is larger than the upper limit of the first preset pressure range, determining that the outdoor unit of the air conditioner has ice and snow accumulation condition, and starting a reminding message of the outdoor unit of the air conditioner that the ice and snow accumulation condition exists;

and/or the presence of a gas in the gas,

determining whether the outdoor unit of the air conditioner has ice and snow accumulation according to the pressure or gravity and the air pressure of the condenser, comprising the following steps:

determining whether the condenser wind pressure is greater than the upper limit of a second preset pressure range, and determining whether the pressure or gravity is greater than the upper limit of a third preset pressure range;

and if the air pressure of the condenser is greater than the upper limit of the second preset pressure range and the pressure or gravity is greater than the upper limit of the third preset pressure range, determining that the outdoor unit of the air conditioner has the ice and snow accumulation condition, and starting a reminding message of the ice and snow accumulation condition of the outdoor unit of the air conditioner.

5. The method of claim 1, wherein controlling the heating device module to perform the melting process further comprises:

if the condensing pressure after the melting period is greater than or equal to the lower limit of the first preset pressure range and less than or equal to the upper limit of the first preset pressure range within a third set time period, or the air pressure of the condenser after the melting period is greater than or equal to the lower limit of the second preset pressure range within the third set time period and less than or equal to the upper limit of the second preset pressure range, controlling the heating device module to return to the preheating mode, and operating for a fourth set time period in the preheating mode;

after a fourth preset time, if the liquid level height of the water pan of the air conditioner is greater than or equal to the preset height, or if the pressure or gravity at the bottom of the water pan of the air conditioner is smaller than the lower limit of a third preset pressure range, or greater than the upper limit of the third preset pressure range, initiating a message for reminding water melting and draining faults, and controlling the heating device module to continue to operate in the preheating mode.

6. An ice and snow removal control device, comprising:

the system comprises an acquisition unit, a control unit and a control unit, wherein the acquisition unit is used for acquiring the outdoor environment temperature of the environment to which the air conditioner belongs and acquiring the state parameters of the air conditioner; the state parameters comprise: condensing pressure of a refrigerant in a unit pipeline of the air conditioner, or pressure or gravity of the bottom of a water pan of the air conditioner and air pressure of a condenser;

the control unit is used for determining whether the outdoor unit of the air conditioner has ice and snow accumulation conditions according to the outdoor environment temperature and the state parameters, and comprises: determining whether the outdoor environment temperature is less than a preset temperature; if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the condensing pressure under the condition that the state parameter comprises the condensing pressure of a refrigerant in a unit pipeline of the air conditioner; or if the outdoor environment temperature is lower than the preset temperature, determining whether the ice and snow accumulation condition exists in an outdoor unit of the air conditioner according to the pressure or gravity and the wind pressure of the condenser under the condition that the state parameters comprise the pressure or gravity at the bottom of a water pan of the air conditioner and the wind pressure of the condenser;

the control unit is further configured to control the heating device module to perform melting processing if the outdoor unit has ice and snow accumulation, and includes: starting the heating device module, controlling the heating device module to enter a preheating mode, and preheating and operating for a first set time length in the preheating mode; after the first set time, if the outdoor unit still has the ice and snow accumulation condition, the heating power of the heating device module is increased to control the heating device module to enter a melting mode, and the outdoor unit is melted and operated for a second set time in the melting mode to complete a melting period.

7. The apparatus of claim 6, wherein,

and/or the presence of a gas in the gas,

8. The apparatus of claim 6 or 7, wherein,

the acquiring unit acquires an outdoor ambient temperature of an environment to which the air conditioner belongs, and includes:

and/or the presence of a gas in the gas,

the acquiring unit acquires state parameters of the air conditioner, and comprises:

9. The apparatus of claim 8, wherein,

the control unit determines whether the outdoor unit of the air conditioner has ice and snow accumulation conditions according to the condensation pressure, and the control unit comprises:

and/or the presence of a gas in the gas,

the control unit determines whether the outdoor unit of the air conditioner has ice and snow accumulation according to the pressure or gravity and the air pressure of the condenser, and the control unit comprises:

10. The apparatus of claim 6, wherein the control unit controls the heating device module to perform the melting process, further comprising:

11. An air conditioner, comprising: ice and snow removal control apparatus as claimed in any one of claims 6 to 10.

12. A storage medium having a plurality of instructions stored therein; the plurality of instructions for loading and executing the deicing control method according to any one of claims 1-5 by a processor.

13. An air conditioner, comprising:

a processor for executing a plurality of instructions;

a memory to store a plurality of instructions;

wherein the plurality of instructions are stored by the memory and loaded and executed by the processor to perform the deicing control method according to any one of claims 1-5.