CN102192631B - Method and system for preventing condensation - Google Patents

Abstract

The invention relates to a method and a system for preventing condensation, wherein the heating power of a heater strip and the corresponding temperature and humidity information are stored into a foundation database to construct a condensation-prevention foundation database; the method for preventing condensation comprises the following steps: setting up the foundation database of temperature, humidity and heating power, and controlling the heater strip to heat at the corresponding power according to the control power in the foundation database corresponding with the specific temperature and humidity; and the system for preventing condensation comprises a temperature sensor, a humidity sensor, a heating device and a master control board, wherein the master control board is provided with the foundation database. Thus, at the specific temperature and humidity, the heater strip works at the control power corresponding with the temperature and humidity at the same time in the foundation database, the energy consumption can be reduced effectively, and the working efficiency can be improved.

Description

A kind of anti-condensation method and system

technical field

The invention relates to the anti-condensation field of cooling and freezing devices, in particular to an anti-condensation method and system for refrigerators, freezers and cold storage rooms.

Background technique

When the temperature difference between the inside and outside of the refrigerator is large, condensation will occur on the surface of the refrigerator. In order to solve this problem, U.S. Patent Document US7340907 provides a solution, through the sensing module to sense the air state near the sensor connected to the refrigeration equipment and input this information into the control module; the control module receives the input of the sensing module, and the input and The built-in value is compared. If the input is different from the preset value, an output indicating the difference between the input and the preset value is generated. This output is expressed as a percentage of 0-100. The control module continuously updates this output according to the input; the heater adjustment The controller adjusts the heater according to the above output, and heats the surface of the refrigeration unit adjacent to the sensor to maintain the surface temperature so that the relative humidity at the sensor is about 90-95 percent. However, although the refrigerator can avoid the influence of condensation through cycle adjustment, the heating process is long due to the uncertain heating power, which affects the working efficiency and increases the power loss of the refrigerator.

Another US patent document US7137262 also provides another solution, which uses a temperature sensor to sense the temperature of the refrigerator surface and inside the refrigerator, and uses a humidity sensor to sense the relative humidity inside the refrigerator; calculate the condensation based on the measured temperature and humidity inside the refrigerator point; determine whether the surface temperature of the refrigerator will cause condensation; if the surface temperature of the refrigerator will cause condensation, start the heating element until the surface temperature will not cause condensation. US7137262 also has the problems of uncertain heating power, long process to reach the desired temperature, and large power loss, and US7137262 uses two temperature sensors that respectively sense the surface and internal temperature of the refrigerator. Use, also caused to raise cost, the problem that job stability reduces.

Contents of the invention

The invention provides an anti-condensation method and device, which are used in cooling and freezing devices such as refrigerators, freezers, and cold storage rooms, and solve the problems in the prior art that the heating power cannot be determined, resulting in large power loss and low work efficiency.

The technical scheme that the present invention solves the problems of the technologies described above is as follows:

An anti-condensation method, comprising:

Step a: temperature test point and heating wire are set at the position where condensation is easily formed;

Step b: keep the ambient humidity constant, change the ambient temperature, collect at each ambient temperature, the temperature of the temperature test point when the heating wire is heated with different powers;

Step c: change the ambient humidity, repeat step b to obtain: under different ambient humidity and ambient temperature, when the heating wire is heated with different powers, the basic data of the test point temperature;

Step d: in the above-mentioned basic data, select the minimum heating power of the heating wire that can make the temperature of the test point not lower than the dew point temperature under the environmental conditions at each ambient temperature and ambient humidity, and record the minimum heating power and Corresponding ambient temperature and ambient humidity to form a basic database;

Step e: collect the ambient temperature and humidity in real time, and find the corresponding power parameters in the basic database according to the collected ambient temperature and humidity in real time, and use the power parameters as the control power of the heating wire;

Step f: Repeat step e.

The beneficial effect of the present invention is that: the heating power is controlled respectively according to different ambient temperatures and different ambient humidity, and the heating power is the minimum power for preventing condensation, thereby reducing energy consumption to the minimum.

On the basis of the above technical solutions, the present invention can also be defined as follows.

Further, the ambient temperature range is 5 to 45°C, the ambient humidity range is 20% to 100%, and the control power range is 0 to 25 watts.

Further, there are multiple temperature test points, and when the minimum power of the heating wire is selected, it is necessary to make the temperature of the test point with the lowest temperature among the multiple temperature test points not lower than the dew point temperature under this environmental condition.

Further, in the step b, the power of the heating wire is adjusted with a fixed increment, and when the heating wire is working in the control power range, the temperature of the test point reaches equilibrium for 3 hours and the temperature of the test point is recorded.

Further, the heating wires include vertical beam heating wires arranged on the vertical beams and/or beam heating wires arranged on the horizontal beams.

Further, the multiple temperature test points are set on the beams and/or vertical beams.

Further, when selecting the control power of the heating wire, select according to the following conditions:

When the ambient temperature is greater than or equal to 5°C and less than 15°C and the ambient humidity is less than 35%, the beam heating wire does not work;

When the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 60% and less than or equal to 70%, the control power of the beam heating wire is 9 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and when the ambient humidity is greater than or equal to 70% and less than or equal to 80%, the control power of the beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 80% and less than or equal to 90%, the control power of the beam heating wire is 12 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the beam heating wire is 14 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the beam heating wire is 12 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 70% and less than 80%, the control power of the beam heating wire is 14 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the beam heating wire is 16 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the beam heating wire is 18 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the beam heating wire is 12 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 70% and less than 80%, the control power of the beam heating wire is 14 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the beam heating wire is 18 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the beam heating wire is 21 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the beam heating wire is 12 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the beam heating wire is 16 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 70% but less than 80%, the control power of the beam heating wire is 18 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the beam heating wire is 21 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the beam heating wire is 23 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 35% and less than 45%, the control power of the beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 45% and less than 55%, the control power of the beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 55% and less than 65%, the control power of the beam heating wire is 14 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 65% and less than 80%, the control power of the beam heating wire is 19 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the beam heating wire is 23 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the beam heating wire is 25 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 35% and less than 45%, the control power of the beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 45% but less than 55%, the control power of the beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 55% and less than 65%, the control power of the beam heating wire is 16 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 65% and less than 80%, the control power of the beam heating wire is 22 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 80% and less than or equal to 100%, the control power of the beam heating wire is 25 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 35% but less than 45%, the control power of the beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 45% but less than 55%, the control power of the beam heating wire is 12 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 55% and less than 65%, the control power of the beam heating wire is 18 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 65% and less than 80%, the control power of the beam heating wire is 22 watts;

Alternatively, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 80% and less than or equal to 100%, the control power of the beam heating wire is 25 watts.

Further, when selecting the control power of the heating wire, select according to the following conditions:

When the ambient temperature is greater than or equal to 5°C and less than 15°C and the ambient humidity is less than 35%, the vertical beam heating wire does not work.

When the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 35% and less than 70%, the control power of the vertical beam heating wire is 1 watt;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 70% and less than 85%, the control power of the vertical beam heating wire is 2 watts;

Or, when the ambient temperature is greater than or equal to 15°C and less than 20°C and the ambient humidity is greater than or equal to 85% and less than 100%, the control power of the vertical beam heating wire is 3 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 35% but less than 50%, the control power of the vertical beam heating wire is 1 watt;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 50% and less than 70%, the control power of the vertical beam heating wire is 2 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 70% and less than 90%, the control power of the vertical beam heating wire is 3 watts;

Or, when the ambient temperature is greater than or equal to 20°C and less than 25°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 35% but less than 50%, the control power of the vertical beam heating wire is 2 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 50% and less than 70%, the control power of the vertical beam heating wire is 3 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 70% but less than 80%, the control power of the vertical beam heating wire is 4 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the vertical beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 25°C and less than 30°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 6 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 35% but less than 45%, the control power of the vertical beam heating wire is 2 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 45% and less than 60%, the control power of the vertical beam heating wire is 3 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the vertical beam heating wire is 4 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 70% but less than 80%, the control power of the vertical beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the vertical beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 30°C and less than 35°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 35% and less than 45%, the control power of the vertical beam heating wire is 3 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 45% but less than 55%, the control power of the vertical beam heating wire is 4 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 55% and less than 65%, the control power of the vertical beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 65% and less than 80%, the control power of the vertical beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the vertical beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 35°C and less than 40°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 10 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the vertical beam heating wire is 5 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the vertical beam heating wire is 6 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the vertical beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 70% and less than 80%, the control power of the vertical beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the vertical beam heating wire is 11 watts;

Or, when the ambient temperature is greater than or equal to 40°C and less than 45°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 13 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 35% and less than 50%, the control power of the vertical beam heating wire is 6 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 50% and less than 60%, the control power of the vertical beam heating wire is 7 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 60% and less than 70%, the control power of the vertical beam heating wire is 8 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 70% and less than 80%, the control power of the vertical beam heating wire is 9 watts;

Or, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 80% and less than 90%, the control power of the vertical beam heating wire is 13 watts;

Alternatively, when the ambient temperature is greater than or equal to 45°C and the ambient humidity is greater than or equal to 90% and less than or equal to 100%, the control power of the vertical beam heating wire is 15 watts.

The present invention also provides an anti-condensation system, including: a humidity sensor for collecting ambient humidity, a temperature sensor for collecting ambient temperature, a heating wire for heating the ambient temperature, and a main controller for receiving ambient temperature and humidity information and controlling the heating wire The board is characterized in that it also includes a basic database storing the heating power of the heating wire and the corresponding temperature and humidity information.

Further, the heating wires include vertical beam heating wires for heating the vertical beams and cross beam heating wires for heating the cross beams.

Further, the control board controls the power output through a thyristor.

Description of drawings

Fig. 1 is the flow chart that the present invention forms basic database;

Fig. 2 is the flowchart of anti-condensation method of the present invention;

Fig. 3 is a structural diagram of an anti-condensation system of the present invention.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Basic data debugging test test method:

As shown in Figure 1:

1. Test ambient temperature: control the temperature at 5-45°C respectively;

2. Test environment humidity: control the humidity at 20%-100% respectively.

3. Point layout: point distribution in each storage room (according to the American standard energy consumption test requirements), five points are equally spaced on the surface of the horizontal and vertical beams;

4. Gear position: Strong gear for refrigerator/strong gear for freezer;

5. Heating wire test conditions:

a. Vertical beam: 0W to 25W, increase by 1W each time (the power can also be increased in other increments);

b. Beam: 0W to 25W in increments of 1W (power can also be increased in other increments).

6. Test method:

Under the conditions of ambient humidity of 20% and ambient temperature of 5°C, adjust the beam and vertical beam heating wires to heat with 0W power, and record the test data immediately after reaching equilibrium for 3 hours (excluding defrosting in the middle) (each temperature test point temperature, current ambient temperature and humidity, and heating wire power), to determine whether the temperature of the temperature test point is greater than the dew point temperature in the current environment, if so, record the current ambient temperature, ambient humidity, and heating power to the basic database and increase the ambient temperature for cyclic testing , otherwise, increase the power level of the heating wire (for example: after the test of vertical beam 0W and cross beam 0W, adjust to vertical beam 1W and cross beam 1W), and test until the temperature of the current test point is not lower than the dew point temperature under the current environmental conditions. Record the current ambient temperature, ambient humidity and heating power to the basic database, increase the test ambient temperature (for example: 0°C to 5°C) and then adjust the heating wire power cycle test; when the ambient temperature is greater than 45°C, increase the ambient humidity and then Carry out a cycle test and end when the ambient humidity is greater than 100%.

The ambient temperature, ambient humidity, and heating wire power increase involved in the test can be changed reasonably within their respective ranges.

According to the recorded data, under the same ambient temperature and humidity conditions, the minimum power is selected so that the temperature of each test point is greater than or equal to the dew point when the ambient temperature and ambient humidity are equal, and the minimum power is integrated to form a basic database.

The resulting basic database is shown in the following table:

The flow of the anti-condensation method shown in Figure 2 uses the humidity and temperature sensors to collect the ambient temperature and humidity in real time, and finds the corresponding power parameters in the basic database according to the collected ambient temperature and ambient humidity in real time, and Use this power parameter as the heating power of the heating wire.

The anti-condensation system shown in Figure 3 includes a humidity sensor that collects ambient humidity, a temperature sensor that collects ambient temperature, a heating wire that heats the ambient temperature, and a main control board that receives information about the ambient temperature and ambient humidity and controls the heating wire , the main control board includes a basic database storing the heating power of the heating wire and the corresponding temperature and humidity information. The main control board calls out the output power value of the heating wire from the basic database according to the collected ambient temperature and ambient humidity, and uses this power value as the heating power of the heating wire.

The above-mentioned embodiment is only an illustration of a first-generation French refrigerator with heating wires for beams and vertical beams, and is used to illustrate the method flow, and is not intended to limit the present invention. It is obvious that within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention.

Claims (8)

1. dewing-proof method comprises:

Step a: easily forming condensation position set temperature test point and heater strip;

Step b: keep ambient humidity constant, change environment temperature, be captured under each environment temperature the temperature of temperature test point when heater strip heats with different capacity;

Step c: change ambient humidity, repeating step b obtains: under varying environment humidity and environment temperature, and when heater strip heats with different capacity, the basic data of test point temperature;

Steps d: in above-mentioned basic data, select heater strip can be so that described test point temperature is not less than the minimum heating power of condensation point temperature under this environmental condition under each environment temperature and the ambient humidity, and record this minimum heating power and corresponding environment temperature and ambient humidity with the basis of formation database;

Step e: Real-time Collection environment temperature and humidity, and the environment temperature that real-time basis collects finds corresponding power parameter with ambient humidity in basic database, and with the power ratio control of this power parameter as heater strip;

Step f: repeating step e.

2. method according to claim 1 is characterized in that, described ambient temperature range is 5 to 45 ℃, and described ambient humidity range is 20% to 100%, and described power ratio control scope is 0 to 25 watt.

3. method according to claim 1 and 2, it is characterized in that, described temperature test point, needs so that the test point temperature that temperature is minimum in described a plurality of temperature test point is not less than the condensation point temperature under this environmental condition when described selection heater strip lowest power for a plurality of.

4. method according to claim 1 and 2 is characterized in that, heater strip power is regulated with fixed increment among the described step b, and when the power ratio control scope was worked, the test point temperature reached balance and records the test point temperature after 3 hours at heater strip.

5. method according to claim 1 is characterized in that, described heater strip comprises the vertical beam heater strip that is arranged on the vertical beam and/or is arranged on crossbeam heater strip on the crossbeam.

6. method according to claim 5 is characterized in that, described temperature test point is arranged on crossbeam and/or the vertical beam.

7. according to claim 5 or 6 arbitrary described methods, it is characterized in that, when selecting the power ratio control of heater strip, select according to following condition:

When environment temperature more than or equal to 5 ℃ less than 15 ℃ and ambient humidity less than 35% the time, the crossbeam heater strip is not worked;

When environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of crossbeam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of crossbeam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 60% less than or equal to 70% the time, the power ratio control of crossbeam heater strip is 9 watts;

Perhaps, when environment temperature more than or equal to 15 ℃ less than 20 ℃ and humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 14 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of crossbeam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of crossbeam heater strip is 10 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of crossbeam heater strip is 12 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of crossbeam heater strip is 14 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of crossbeam heater strip is 16 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 18 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of crossbeam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of crossbeam heater strip is 10 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of crossbeam heater strip is 12 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of crossbeam heater strip is 14 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of crossbeam heater strip is 18 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 21 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of crossbeam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of crossbeam heater strip is 12 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of crossbeam heater strip is 16 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of crossbeam heater strip is 18 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of crossbeam heater strip is 21 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 23 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 35% less than 45% the time, the power ratio control of crossbeam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 45% less than 55% the time, the power ratio control of crossbeam heater strip is 10 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 55% less than 65% the time, the power ratio control of crossbeam heater strip is 14 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 65% less than 80% the time, the power ratio control of crossbeam heater strip is 19 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of crossbeam heater strip is 23 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 25 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 35% less than 45% the time, the power ratio control of crossbeam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 45% less than 55% the time, the power ratio control of crossbeam heater strip is 10 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 55% less than 65% the time, the power ratio control of crossbeam heater strip is 16 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 65% less than 80% the time, the power ratio control of crossbeam heater strip is 22 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 80% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 25 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 35% less than 45% the time, the power ratio control of crossbeam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 45% less than 55% the time, the power ratio control of crossbeam heater strip is 12 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 55% less than 65% the time, the power ratio control of crossbeam heater strip is 18 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 65% less than 80% the time, the power ratio control of crossbeam heater strip is 22 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 80% less than or equal to 100% the time, the power ratio control of crossbeam heater strip is 25 watts.

8. according to claim 5 or 6 arbitrary described methods, it is characterized in that, when selecting the power ratio control of heater strip, select according to following condition:

When environment temperature more than or equal to 5 ℃ less than 15 ℃ and ambient humidity less than 35% the time, the vertical beam heater strip is not worked;

When environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 35% less than 70% the time, the power ratio control of vertical beam heater strip is 1 watt;

Perhaps, when environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 70% less than 85%, the power ratio control of vertical beam heater strip is 2 watts;

Perhaps, when environment temperature more than or equal to 15 ℃ less than 20 ℃ and ambient humidity more than or equal to 85% less than 100% the time, the power ratio control of vertical beam heater strip is 3 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of vertical beam heater strip is 1 watt;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 50% less than 70% the time, the power ratio control of vertical beam heater strip is 2 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 70% less than 90% the time, the power ratio control of vertical beam heater strip is 3 watts;

Perhaps, when environment temperature more than or equal to 20 ℃ less than 25 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of vertical beam heater strip is 2 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 50% less than 70% the time, the power ratio control of vertical beam heater strip is 3 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of vertical beam heater strip is 4 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of vertical beam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 25 ℃ less than 30 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 6 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 35% less than 45% the time, the power ratio control of vertical beam heater strip is 2 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 45% less than 60% the time, the power ratio control of vertical beam heater strip is 3 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of vertical beam heater strip is 4 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of vertical beam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of vertical beam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 30 ℃ less than 35 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 35% less than 45% the time, the power ratio control of vertical beam heater strip is 3 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 45% less than 55% the time, the power ratio control of vertical beam heater strip is 4 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 55% less than 65% the time, the power ratio control of vertical beam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 65% less than 80% the time, the power ratio control of vertical beam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of vertical beam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 35 ℃ less than 40 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 10 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of vertical beam heater strip is 5 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of vertical beam heater strip is 6 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of vertical beam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of vertical beam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of vertical beam heater strip is 11 watts;

Perhaps, when environment temperature more than or equal to 40 ℃ less than 45 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 13 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 35% less than 50% the time, the power ratio control of vertical beam heater strip is 6 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 50% less than 60% the time, the power ratio control of vertical beam heater strip is 7 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 60% less than 70% the time, the power ratio control of vertical beam heater strip is 8 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 70% less than 80% the time, the power ratio control of vertical beam heater strip is 9 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 80% less than 90% the time, the power ratio control of vertical beam heater strip is 13 watts;

Perhaps, when environment temperature more than or equal to 45 ℃ and ambient humidity more than or equal to 90% less than or equal to 100% the time, the power ratio control of vertical beam heater strip is 15 watts.

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