30results about How to "Reduce the number of blowback" patented technology

The invention belongs to the technical field of air conditioners, and particularly relates to a defrosting control method for an air conditioner. In order to improve the defrosting efficiency of the air conditioner, the defrosting control method for the air conditioner aims at the air conditioner with a bypass defrosting loop. The defrosting control method comprises the steps: when the air conditioner needs to enter into a defrosting mode, an outdoor fan is controlled to stop rotating, and the bypass defrosting loop is started; after the outdoor fan stops rotating for the first set time, the outdoor fan is controlled to rotate reversely for the second set time; after the outdoor fan rotates reversely for the second set time, the outdoor fan is selectively controlled to rotate reversely forthe second set time again according to at least one of t<upper>, t<middle> and t<lower>; when the outdoor fan rotates reversely, the bypass defrosting loop is stopped, after the outdoor fan rotates reversely for the second set time, the bypass defrosting loop is started again after the time t; and the time t is determined according to the average value of t<upper>, t<middle> and t<lower>. The reverse rotation opportunity of the outdoor fan can be accurately controlled, and the defrosting efficiency of the air conditioner is improved greatly.

The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner defrosting control method. For improving defrosting efficiency of the air conditioner with a bypass defrosting loop, the air conditioner defrosting control method includes the following steps: when the air conditioner needs to entre a defrosting mode, acquiring temperature Toil of an outer coil of the air conditioner; selectively enabling the air conditioner to enter a bypass defrosting mode or a reverse cycle defrosting mode according to the temperature Toil; when the air conditioner enters the bypass defrosting mode, intermittently controlling the bypass defrosting loop to open / close, and controlling an outdoor draught fan to reverse for set time under the closing state of thebypass defrosting loop; and confirming opening time of the bypass defrosting loop and the set time according to the following mode: acquiring indoor environment temperature Troom; and confirming theopening time of the bypass defrosting loop and the set time according to the temperature Troom. The air conditioner defrosting control method can accurately select the optimum defrosting mode and efficiently blow off molten frost layers, and greatly improves defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and particularly relates to a defrost control method for an air conditioner. In order to improve the defrost efficiency of the air conditioner, the defrost control method for the air conditioner is directed to the air conditioner with a bypass defrost circuit. The defrost control method includes the following steps that when the airconditioner needs to enter a defrost mode, an outdoor fan is controlled to stop rotating, and the bypass defrost circuit is started; after the outdoor fan stops rotating for a first set time, the outdoor fan is controlled to reversely rotate for a second set time; after the outdoor fan reversely rotates for the second set time, the outdoor fan is selectively controlled to reversely rotate again for the second set time according to at least one of t<top>, t<middle> and t<bottom>; when the outdoor fan is reversely rotating, the bypass defrost circuit is closed, and after the outdoor fan reversely rotates for the second set time, the bypass defrost circuit is started after time t; and the time t is determined according to an indoor temperature. According to the defrost control method for theair conditioner, the reverse rotating timing of the outdoor fan can be more accurately controlled, and the defrost efficiency of the air conditioner is greatly improved.

The invention provides an energy-saving low-pressure extraction and cooling melamine production process, including a melamine reactor, a hot air cooler, a filter, a crystallizer, a trap, a carrier gas compressor, a cold air fan, a urine scrubber, a carrier gas heater, etc. . The upper part of the crystallizer has a double-layer cold air ring pipe, and the lower part of the crystallizer has a rotary scraper; the air intake of the carrier gas compressor and the air-conditioning fan are separated, the air intake of the air-conditioning compressor adopts hot process air, and the air intake of the air-conditioning fan adopts cold process air; From the outlet of the carrier gas preheater, a hot process gas is led out to distribute hot ammonia gas or superheated steam into the hot gas cooler and filter; the filters are set in series and parallel. The low-pressure extraction and cooling melamine production process device of the present invention has less construction investment, low consumption, high operating flexibility, high-grade product rate can reach 95%, and the continuous operation period of the device can reach more than 4 to 6 months.

The invention belongs to the technical field of air conditioners and particularly relates to an air conditioner defrosting control method. The air conditioner defrosting control method aims to improvethe defrosting efficiency of the air conditioner. The air conditioner defrosting control method is directed against an air conditioner with a bypass defrosting loop. The air conditioner defrosting control method comprises the following steps that when the air conditioner needs to enter the defrosting mode, an outdoor fan is controlled to stop rotation, and the bypass defrosting loop is started; after the outdoor fan stops rotation for a first set time period, the outdoor fan is controlled to rotate reversely for a second set time period; after the outdoor fan rotates reversely for the secondset time period, the temperature t<upper> of the upper part of an outer coiler, the temperature t<middle> of the middle of the outer coiler and the temperature t<lower> of the lower part of the outercoiler are detected; and according to at least one of the temperature t<upper>, the temperature t<middle> and the temperature t<lower>, the outdoor fan is controlled to rotate reversely for the secondset time period again. By the adoption of the air conditioner defrosting control method, the reverse rotation moment of the outdoor unit can be more accurately controlled, the number of times of reverse blowing of the outdoor fan is reduced, and the outdoor fan can more accurately and more efficiently blow off a molten frost layer.

The invention discloses a backflushing dust removal method for a TRT dry dust removal system, which belongs to the technical field of metallurgical environmental protection dust removal equipment design and manufacture. Provided is a backflushing dust removal method for TRT dry dust removal system, which has good dust removal effect and can effectively prolong the service life of dust removal bags. In the process of backflushing and dedusting, the backflushing and dedusting method adopts the backflushing of the dust-removing cloth bag only once each time, and completes the backflushing and dedusting through multiple time delay operations.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating and turn on Bypass the defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, close the bypass defrosting circuit, and after the outdoor fan reverses for a second set time, time t Turn on the bypass defrosting circuit; the time t is determined according to the range of the outdoor fan current value and the indoor temperature. The invention can accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.

The invention discloses a dedusting filter element, and belongs to the field of air filter parts. The dedusting filter element mainly comprises a V-shaped continuous folding filter layer and a supporting protection layer arranged in the V-shaped continuous folding filter layer, the novel dedusting filter element further comprises an iron injecting bottom and an iron injecting head, and the iron injecting bottom is bond to the interior of one end of the V-shaped continuous folding filter layer and in a gear shape; and the iron injecting head is bond to one end of the V-shaped continuous foldingfilter layer to wrap the V-shaped continuous folding filter layer, and is in a circular ring shape. The dedusting filter element has the beneficial effects that the dedusting filter element is good in structural strength, the iron injecting amount of the iron injecting bottom is appropriate, a polyester fiber thermal coated nanometer film is adopted, and the unit micropore amount is as much as 20times of a common filter element. Open type filter layers are formed by adopting an iron injecting technique, dust can easily slide down rather than being accumulated. The distance and the angle of the filter layers are appropriate, so that dust is not prone to being clamped between the filter layers, dust cannot be accumulated easily on the surfaces of the novel filter layers, the back blowing frequency is lowered, and the energy consumption is declined.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating, And open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, close the bypass defrosting circuit, and after the outdoor fan reverses for a second set time, time t Open the bypass defrosting circuit; the time t is determined according to the difference between I and Ie. The invention can more accurately control the reverse timing of the outdoor fan, and greatly improves the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed in the present invention is aimed at the air conditioner with a bypass defrosting circuit, and the method includes the following steps: when the air conditioner needs to enter the defrosting mode, control the outdoor fan Stop rotating and open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to the outdoor fan The current selectively controls the outdoor fan to reverse for the second set time; when the outdoor fan is reversed, the bypass defrosting circuit is closed, and after the outdoor fan is reversed for the second set time, the time t is passed to open the Bypass the defrosting circuit, where the time t is determined according to the room temperature. The invention can more precisely control the reverse timing of the outdoor fan, and greatly improves the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed in the present invention is aimed at an air conditioner with a bypass defrosting circuit. The method includes the following steps: when the air conditioner needs to enter the defrosting mode, obtain the External coil temperature Toil; selectively make the air conditioner enter bypass defrosting mode or reverse cycle defrosting mode according to Toil; when the air conditioner enters bypass defrosting mode, control the opening / closing of bypass defrosting circuit at intervals , and when the bypass defrosting circuit is closed, the outdoor fan is controlled to reverse the setting time; the opening time and setting time of the bypass defrosting circuit are based on t 上 , t 中 , t 下 Sure. The invention can accurately select the best defrosting mode, and efficiently blow off the melted frost layer, thereby greatly improving the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit, and the method includes the following steps: when the air conditioner needs to enter the defrosting mode, control the outdoor fan Stop rotating and open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to the outdoor fan The current selectively controls the outdoor fan to reverse for the second set time; when the outdoor fan is reversed, the bypass defrosting circuit is closed, and after the outdoor fan is reversed for the second set time, the bypass is turned on after the preset time through the defrost circuit. The invention can not only control the reverse timing of the outdoor fan more accurately, reduce the number of blowbacks of the outdoor fan, but also greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed in the present invention is aimed at an air conditioner with a bypass defrosting circuit. The method includes the following steps: when the air conditioner needs to enter the defrosting mode, obtain the External coil temperature Toil; selectively make the air conditioner enter bypass defrosting mode or reverse cycle defrosting mode according to Toil; when the air conditioner enters bypass defrosting mode, control the opening / closing of bypass defrosting circuit at intervals , and when the bypass defrosting circuit is closed, the outdoor fan is controlled to reverse the set time; the opening time of the bypass defrosting circuit and the set time are based on t 上 , t 中 and t 下 The average value is determined. The invention can accurately select the best defrosting mode, and efficiently blow off the melted frost layer, thereby greatly improving the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating, And open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, the bypass defrosting circuit is closed, and after the outdoor fan is reversed for the second set time, time t Open the bypass defrosting circuit; the time t depends on the indoor temperature and t 上 and t 中 Sure. The invention can accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and specifically relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioners, the air conditioner defrosting control method is for the air conditioners with bypass defrosting loops. The method includes the following steps that when an air conditioner needs to enter the defrosting mode, an outdoor draught fan is controlled to stop rotating, and a bypass defrosting loop is started; after rotation stoppage of the outdoor draught fan lasts for the first set time, theoutdoor draught fan is controlled to rotate backwards for the second set time; according to at least one of t[upper], t[middle] and t[lower], the outdoor draught fan is selectively controlled to rotate backwards again for the second set time; and when the outdoor draught fan rotates backwards, the bypass defrosting loop is stopped, and after the outdoor draught fan rotates backwards for the second set time, the bypass defrosting loop is started the preset time later. By means of the air conditioner defrosting control method, the backward rotation opportunity of the outdoor draught fan can bemore precisely controlled, the number of blowback times of the outdoor draught fan is decreased, and the defrosting efficiency of the air conditioner is also greatly improved.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit, and the method includes the following steps: when the air conditioner needs to enter the defrosting mode, control the outdoor fan Stop rotating and open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, close the bypass defrosting circuit, and after the outdoor fan reverses for a second set time, time t Open the bypass defrosting circuit; the time t is determined according to the indoor temperature. The invention can more accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit, and the method includes the following steps: when the air conditioner needs to enter the defrosting mode, control the outdoor fan Stop the rotation and open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; and according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, the bypass defrosting circuit is closed, and after the outdoor fan is reversed for a second set time, the preset time to open the bypass defrost circuit. The invention can not only control the reverse timing of the outdoor fan more accurately, reduce the number of blowbacks of the outdoor fan, but also greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed in the present invention is aimed at an air conditioner with a bypass defrosting circuit. The method includes the following steps: when the air conditioner needs to enter the defrosting mode, obtain the External coil temperature Toil; selectively make the air conditioner enter bypass defrosting mode or reverse cycle defrosting mode according to Toil; when the air conditioner enters bypass defrosting mode, control the opening / closing of bypass defrosting circuit at intervals , and when the bypass defrosting circuit is closed, control the outdoor fan reverse rotation setting time; the opening time and setting time of the bypass defrosting circuit are determined as follows: obtain the indoor ambient temperature Troom; determine the bypass according to the Troom The opening time of the defrosting circuit and the set time. The invention can accurately select the best defrosting mode, and efficiently blow off the melted frost layer, thereby greatly improving the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating, And open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, the bypass defrosting circuit is closed, and after the outdoor fan is reversed for the second set time, time t Open the bypass defrosting circuit; time t according to t 上 , t 中 , t 下 Sure. The invention can accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating, And open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, close the bypass defrosting circuit, and after the outdoor fan reverses for a second set time, time t Open the bypass defrosting circuit; time t according to t 上 , t 中 , t 下 The average value is determined. The invention can accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.

The invention belongs to the technical field of air conditioners, and in particular relates to an air conditioner defrosting control method. In order to improve the defrosting efficiency of the air conditioner, the air conditioner defrosting control method proposed by the present invention is aimed at the air conditioner with a bypass defrosting circuit. The method includes: when the air conditioner needs to enter the defrosting mode, control the outdoor fan to stop rotating, And open the bypass defrosting circuit; after the outdoor fan stops rotating for the first set time, control the outdoor fan to reverse for the second set time; when the outdoor fan reverses for the second set time, according to t 上 , t 中 and t 下 At least one of them selectively controls the outdoor fan to reverse for a second set time; when the outdoor fan is reversed, close the bypass defrosting circuit, and after the outdoor fan reverses for a second set time, time t Turn on the bypass defrosting circuit; the time t is determined according to the range of the current value I of the outdoor fan. The invention can accurately control the reverse timing of the outdoor fan, and greatly improve the defrosting efficiency of the air conditioner.