CN104676991B - Air conditioner and defrosting method thereof - Google Patents
Air conditioner and defrosting method thereof Download PDFInfo
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- CN104676991B CN104676991B CN201310611272.0A CN201310611272A CN104676991B CN 104676991 B CN104676991 B CN 104676991B CN 201310611272 A CN201310611272 A CN 201310611272A CN 104676991 B CN104676991 B CN 104676991B
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- 238000010257 thawing Methods 0.000 title claims abstract description 242
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- 238000010438 heat treatment Methods 0.000 claims abstract description 17
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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Abstract
Description
技术领域technical field
本发明涉及空调除霜技术领域，更具体地说，涉及一种空调器及其除霜方法。The invention relates to the technical field of air conditioner defrosting, and more specifically, relates to an air conditioner and a defrosting method thereof.
背景技术Background technique
空调器以制热模式运行时，室外换热器会出现结霜现象。当室外换热器结霜后，通常需要清除室外换热器上的霜，目前采用化霜的方式实现。When the air conditioner is running in heating mode, frost will form on the outdoor heat exchanger. When the outdoor heat exchanger is frosted, it is usually necessary to remove the frost on the outdoor heat exchanger, which is currently achieved by defrosting.
目前，空调器的除霜方法为：定时化霜来完成空调器的化霜。具体的，当空调器的运行时间达到预设时间且室外换热器的管温达到预设温度后，空调器开始化霜；待化霜完成后，空调机组正常运行，当再次满足上述条件(空调器的运行时间达到预设时间且室外换热器的管温达到预设温度)时，开始化霜。At present, the defrosting method of the air conditioner is: timing defrosting to complete the defrosting of the air conditioner. Specifically, when the running time of the air conditioner reaches the preset time and the tube temperature of the outdoor heat exchanger reaches the preset temperature, the air conditioner starts to defrost; When the running time of the air conditioner reaches the preset time and the tube temperature of the outdoor heat exchanger reaches the preset temperature), defrosting starts.
但是，上述除霜方法存在以下问题：若室外空气相对湿度较小，当空调器的运行时间达到预设时间且室外换热器的管温达到预设温度后，室外换热器结霜很少或是基本不结霜，但此时空调器仍然会进行化霜过程；若室外空气湿度较大时，当空调器的运行时间达到预设时间且室外换热器的管温达到预设温度后，室外换热器结霜较厚，此时进行化霜，较易出现化霜不干净的现象。则上述除霜方法存在“频繁化霜”或者“化霜不完全”的问题，导致除霜效果较差，严重影响了空调器的制热效果。However, the above-mentioned defrosting method has the following problems: if the relative humidity of the outdoor air is small, when the operating time of the air conditioner reaches the preset time and the tube temperature of the outdoor heat exchanger reaches the preset temperature, there will be little frosting on the outdoor heat exchanger. Or there is basically no frost, but the air conditioner will still defrost at this time; if the outdoor air humidity is high, when the operating time of the air conditioner reaches the preset time and the tube temperature of the outdoor heat exchanger reaches the preset temperature , The frost on the outdoor heat exchanger is thicker, and defrosting at this time is more likely to cause unclean defrosting. Then, the above-mentioned defrosting method has the problem of "frequent defrosting" or "incomplete defrosting", which leads to poor defrosting effect and seriously affects the heating effect of the air conditioner.
综上所述，如何除霜，以提高除霜效果，降低对空调器制热效果的影响，是目前本领域技术人员亟待解决的问题。To sum up, how to defrost to improve the defrosting effect and reduce the impact on the heating effect of the air conditioner is an urgent problem to be solved by those skilled in the art.
发明内容Contents of the invention
本发明的目的是提供一种空调器的除霜方法，以提高除霜效果，进而降低对空调器制热效果的影响。本发明的另一目的是提供一种空调器。The object of the present invention is to provide a defrosting method for an air conditioner, so as to improve the defrosting effect and further reduce the influence on the heating effect of the air conditioner. Another object of the present invention is to provide an air conditioner.
为了实现上述目的，本发明提供如下技术方案：In order to achieve the above object, the present invention provides the following technical solutions:
一种空调器的除霜方法，包括步骤：A defrosting method for an air conditioner, comprising the steps of:
1)空调器以制热模式运行，检测所述空调器的室外换热器的管温TB；1) The air conditioner operates in heating mode, and detects the tube temperature T B of the outdoor heat exchanger of the air conditioner;
2)当所述空调器的运行时间达到第一预设时间且TB≤TA时，控制空调器开始第1次化霜，并记录化霜时间t1，其中，TA为化霜管温；2) When the running time of the air conditioner reaches the first preset time and T B ≤ T A , control the air conditioner to start defrosting for the first time, and record the defrosting time t 1 , where T A is the defrosting tube temperature;
3)记第n次化霜时间为tn，自第n次化霜结束后所述空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第n+1次化霜，并记录化霜时间t n+1，其中，TC为修订管温，n≥1，当tb≤tn－t0≤ta时，TC＝TA，当tn－t0＜tb时，则TC＝TA－△T，当tn－t0＞ta时，TC＝TA+△T，ta为第二预设时间，tb为第三预设时间，t0为化霜最佳时间，△T为修订值，且△T＞0。3) Record the nth defrosting time as t n , and when the running time of the air conditioner reaches the first preset time after the nth defrosting ends and T B ≤ T C , control the air conditioner to start the n+1th defrosting time Defrost once, and record the defrosting time t n+1 , where T C is the revised tube temperature, n≥1, when t b ≤t n -t 0 ≤t a , T C =T A , when t n When -t 0 <t b , then T C =T A -△T, when t n -t 0 >t a , T C =T A +△T, t a is the second preset time, t b is The third preset time, t0 is the best time for defrosting, ΔT is the revised value, and ΔT>0.
优选的，上述空调器的除霜方法中，ta＞0，tb＜0，且ta＝|tb|。Preferably, in the above-mentioned defrosting method for the air conditioner, t a >0, t b <0, and t a =|t b |.
优选的，上述空调器的除霜方法中，ta＝|tb|＝1。Preferably, in the above-mentioned defrosting method for the air conditioner, t a =|t b |=1.
优选的，上述空调器的除霜方法中，所述步骤2)之前还包括步骤：检测室外环境温度，根据室外环境温度确定化霜管温TA。Preferably, in the defrosting method for the above-mentioned air conditioner, the step 2) further includes the step of: detecting the outdoor ambient temperature, and determining the defrosting tube temperature T A according to the outdoor ambient temperature.
优选的，上述空调器的除霜方法中，采用管感温包检测所述室外换热器的管温TB，采用环境感温包检测室外环境温度。Preferably, in the defrosting method of the above-mentioned air conditioner, a tube temperature sensing package is used to detect the tube temperature T B of the outdoor heat exchanger, and an environment temperature sensing package is used to detect the outdoor ambient temperature.
本发明提供的空调器的除霜方法的原理为：当tb≤tn－t0≤ta时，表明第n次化霜时间和化霜最佳时间相差较小，第n次化霜时间较合适，则化霜管温TA无需修订，即修订管温TC为化霜管温TA；当tn－t0＜tb时，即第n次化霜时间较小于化霜最佳时间，表明第n次所结的霜较少，则第n+1次化霜时需要降低管温TB，以增加第n+1次化霜前所结的霜，即修订管温TC＝TA－△T；当tn－t0＞ta时，即第n次化霜时间较大于化霜最佳时间，表明第n次所结的霜较多，则第n+1次化霜时需要升高管温TB，以减少第n+1次化霜前所结的霜，即修订管温TC＝TA+△T。The principle of the air conditioner defrosting method provided by the present invention is: when t b ≤t n -t 0 ≤t a , it indicates that the difference between the nth defrosting time and the best defrosting time is small, and the nth defrosting time If the time is appropriate, the defrosting tube temperature T A does not need to be revised, that is, the revised tube temperature T C is the defrosting tube temperature T A ; when t n -t 0 <t b , that is, the nth defrosting time is less than The optimal time of frost indicates that the amount of frost formed in the nth defrost is less, so the tube temperature T B needs to be lowered in the n+1th defrost to increase the frost formed before the n+1th defrost, that is, the revised tube temperature Temperature T C = T A - △ T; when t n - t 0 > t a , that is, the nth defrosting time is longer than the best defrosting time, indicating that there is more frost in the nth time, then the nth time When defrosting for +1 time, the tube temperature T B needs to be increased to reduce the frost formed before the n+1 defrosting time, that is, the revised tube temperature T C =T A +△T.
本发明提供的空调器的除霜方法，根据上一次的化霜时间，对化霜管温TA进行修订并获得修订管温TC，且根据该修订管温TC进行该次的化霜。这样，每一次化霜前都对化霜管温TA进行了修订，即实现了对化霜管温TA的动态修订，能够较准确地获知结霜情况，使得空调器的每一次化霜时间均控制在较合适的时间内，避免了出现“频繁化霜”和“化霜不完全”的问题，有效提高了除霜效果，进而降低了对空调器制热效果的影响。In the defrosting method of the air conditioner provided by the present invention, according to the last defrosting time, the defrosting tube temperature T A is revised to obtain the revised tube temperature T C , and the defrosting is carried out according to the revised tube temperature T C . In this way, the defrosting tube temperature T A is revised before each defrosting, that is, the dynamic revision of the defrosting tube temperature T A is realized, and the frosting situation can be known more accurately, so that each defrosting of the air conditioner The time is controlled within a more appropriate time, which avoids the problems of "frequent defrosting" and "incomplete defrosting", effectively improves the defrosting effect, and then reduces the impact on the heating effect of the air conditioner.
基于上述提供的空调器的除霜方法，本发明还提供了一种空调器，该空调器包括：室外换热器，与所述室外换热器相连的节流装置；Based on the defrosting method of the air conditioner provided above, the present invention also provides an air conditioner, which includes: an outdoor heat exchanger, and a throttling device connected to the outdoor heat exchanger;
设置于所述室外换热器内，检测所述室外换热器管温TB的第一温度传感器； A first temperature sensor installed in the outdoor heat exchanger to detect the tube temperature TB of the outdoor heat exchanger;
与所述第一温度传感器相连，当所述空调器的运行时间达到第一预设时间且TB≤TA时，控制所述空调器第1次以化霜模式运行，并记录化霜时间t1的第一控制器，其中，TA为化霜管温；Connected with the first temperature sensor, when the running time of the air conditioner reaches the first preset time and T B ≤ T A , control the air conditioner to run in the defrosting mode for the first time, and record the defrosting time The first controller of t 1 , wherein T A is the defrosting tube temperature;
与所述第一温度传感器和所述第一控制器相连，第n次化霜时间为tn，自第n次化霜结束后所述空调器的运行时间达到第一预设时间且TB≤TC时，控制所述空调器第n+1次以化霜模式运行，并记录化霜时间tn+1的第二控制器，其中，TC为修订管温，n≥1，当tb≤tn－t0≤ta时，TC＝TA，当tn－t0＜tb时，则TC＝TA－△T，当tn－t0＞ta时，TC＝TA+△T，ta为第二预设时间，tb为第三预设时间，t0为化霜最佳时间，△T为修订值，且△T＞0。Connected with the first temperature sensor and the first controller, the nth defrosting time is t n , the running time of the air conditioner reaches the first preset time after the nth defrosting ends and T B ≤TC , the second controller that controls the air conditioner to run in the defrosting mode for the n+1th time and records the defrosting time tn+1 , where T C is the revised tube temperature, n≥1, when When t b ≤t n －t 0 ≤t a , T C ＝T A , when t n －t 0 <t b , then T C ＝T A －△T, when t n －t 0 ＞t a , T C =T A +△T, t a is the second preset time, t b is the third preset time, t 0 is the best defrosting time, △T is the revised value, and △T>0.
优选的，上述空调器中，ta＞0，tb＜0，且ta＝|tb|。Preferably, in the above air conditioner, t a >0, t b <0, and t a =|t b |.
优选的，上述空调器中，ta＝|tb|＝1。Preferably, in the above air conditioner, t a =|t b |=1.
优选的，上述空调器，还包括：检测室外环境温度的第二温度传感器；Preferably, the above-mentioned air conditioner further includes: a second temperature sensor for detecting the outdoor ambient temperature;
与所述第二温度传感器相连，根据室外环境温度确定化霜管温TA的处理单元，所述处理单元分别与所述第一控制器和所述第二控制器相连。A processing unit that is connected with the second temperature sensor and determines the temperature T A of the defrosting tube according to the outdoor ambient temperature, and the processing unit is connected with the first controller and the second controller respectively.
优选的，上述空调器中，所述第一控制器、所述第二控制器和所述处理单元集成于所述空调器的控制主板。Preferably, in the above air conditioner, the first controller, the second controller and the processing unit are integrated into a control board of the air conditioner.
优选的，上述空调器中，所述第一温度传感器为管感温包；所述第二温度传感器为环境感温包，所述环境感温包设置于所述空调器的外壳体上。Preferably, in the above-mentioned air conditioner, the first temperature sensor is a pipe temperature sensing bag; the second temperature sensor is an environment temperature sensing bag, and the environment temperature sensing bag is arranged on the outer casing of the air conditioner.
附图说明Description of drawings
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.
图1为本发明实施例提供的空调器的除霜方法的流程示意图；Fig. 1 is a schematic flow chart of a defrosting method for an air conditioner provided by an embodiment of the present invention;
图2为本发明实施例提供的空调器的原理图。Fig. 2 is a schematic diagram of the air conditioner provided by the embodiment of the present invention.
上图2中：In Figure 2 above:
1为环境感温包、2为管感温包、3为室外换热器、4为节流装置、5为控制主板、6为室内换热器、7为压缩机、8为四通阀。1 is the environmental temperature sensing package, 2 is the tube temperature sensing package, 3 is the outdoor heat exchanger, 4 is the throttling device, 5 is the control board, 6 is the indoor heat exchanger, 7 is the compressor, and 8 is the four-way valve.
具体实施方式detailed description
本发明实施例提供了一种空调器的除霜方法，提高了除霜效果，进而降低了对空调器制热效果的影响。The embodiment of the present invention provides a defrosting method for an air conditioner, which improves the defrosting effect and further reduces the influence on the heating effect of the air conditioner.
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
请参考附图1，本发明实施例提供的空调器的除霜方法具体包括步骤：Please refer to accompanying drawing 1, the defrosting method of the air conditioner provided by the embodiment of the present invention specifically includes steps:
S01)检测空调器的室外换热器的管温TB：S01) Detect the tube temperature T B of the outdoor heat exchanger of the air conditioner:
需要说明的是，空调器只有以制热模式运行时，才会出现结霜的现象。因此检测室外换热器的管温TB是在空调器以制热模式运行时进行检测的。通常通过温度传感器进行检测，为了便于温度传感器的安装，优先采用管感温包检测室外换热器的管温TB。It should be noted that frosting occurs only when the air conditioner is running in heating mode. Therefore, the tube temperature TB of the outdoor heat exchanger is detected when the air conditioner is running in the heating mode. It is usually detected by a temperature sensor. In order to facilitate the installation of the temperature sensor, it is preferred to use a tube temperature sensor package to detect the tube temperature T B of the outdoor heat exchanger.
S02)当空调器的运行时间达到第一预设时间且TB≤TA时，控制空调器开始第1次化霜并记录化霜时间t1，其中，TA为化霜管温：S02) When the running time of the air conditioner reaches the first preset time and T B ≤ T A , control the air conditioner to start defrosting for the first time and record the defrosting time t 1 , where T A is the defrosting tube temperature:
化霜管温TA，是在预设条件下空调器需要除霜时室外换热器的管温。化霜管温TA可以通过室外环境温度进行确定。优选的，上述空调器的除霜方法中步骤S02之前还包括步骤：检测室外环境温度，根据室外环境温度确定化霜管温TA。通常通过温度传感器进行检测，为了便于温度传感器的安装，优先采用环境感温包检测室外环境温度。The defrosting tube temperature T A is the tube temperature of the outdoor heat exchanger when the air conditioner needs defrosting under preset conditions. The defrosting tube temperature T A can be determined by the outdoor ambient temperature. Preferably, before the step S02 in the defrosting method of the air conditioner, there is a step of: detecting the outdoor ambient temperature, and determining the defrosting tube temperature T A according to the outdoor ambient temperature. It is usually detected by a temperature sensor. In order to facilitate the installation of the temperature sensor, it is preferred to use an environmental temperature sensor package to detect the outdoor ambient temperature.
在实际应用过程中，需要进行多组试验。以室外环境温度作为参量，改变室外环境温度，记录空调器需要除霜时室外换热器的管温，即化霜管温TA；最终获得不同室外环境温度对应的化霜管温TA，将这些数据输入空调器的控制主板中，从而根据室外环境温度确定化霜管温TA。当然也可根据室外环境温度和室外环境湿度以及运行时间综合确定，或者将化霜管温TA设为定值，本发明实施例对此不做具体地限定。In the actual application process, multiple sets of experiments are required. Take the outdoor ambient temperature as a parameter, change the outdoor ambient temperature, record the tube temperature of the outdoor heat exchanger when the air conditioner needs defrosting, that is, the defrosting tube temperature T A ; finally obtain the defrosting tube temperature T A corresponding to different outdoor ambient temperatures, Input these data into the control board of the air conditioner, so as to determine the temperature T A of the defrosting tube according to the outdoor ambient temperature. Of course, it can also be comprehensively determined according to the outdoor ambient temperature, outdoor ambient humidity, and running time, or set the defrosting tube temperature T A as a constant value, which is not specifically limited in this embodiment of the present invention.
需要说明的是，空调器的运行时间是指，空调器自开机后到第1次开始化霜时运行的时间。化霜时间t1，是指空调器第1次化霜所用的时间。It should be noted that the running time of the air conditioner refers to the running time of the air conditioner from the time it is turned on to the first defrosting. The defrosting time t 1 refers to the time for the air conditioner to defrost for the first time.
S03)自第n次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第n+1次化霜并记录化霜时间tn+1，其中，TC为修订管温，n≥1：S03) When the running time of the air conditioner reaches the first preset time after the nth defrosting ends and T B ≤ T C , control the air conditioner to start the n+1th defrosting and record the defrosting time t n+1 , Among them, T C is the revised tube temperature, n≥1:
需要说明的是，记第n次化霜时间为tn，n＝1，2，3，4，5，6……。为了有效修订化霜管温TA，设定空调器的化霜最佳时间t0，通过比较第n次化霜时间与化霜最佳时间来修订化霜管温TA。具体地，当tb≤tn－t0≤ta时，TC＝TA；当tn－t0＜tb时，则TC＝TA－△T；当tn－t0＞ta时，TC＝TA+△T；其中，ta为第二预设时间，tb为第三预设时间，△T为修订值，且△T＞0。It should be noted that the nth defrosting time is recorded as t n , n=1, 2, 3, 4, 5, 6.... In order to effectively revise the defrosting tube temperature T A , set the best defrosting time t 0 of the air conditioner, and revise the defrosting tube temperature T A by comparing the nth defrosting time with the best defrosting time. Specifically, when t b ≤t n -t 0 ≤t a , T C =T A ; when t n -t 0 <t b , then T C =T A -△T; when t n -t 0 When >t a , T C =T A +ΔT; wherein, t a is the second preset time, t b is the third preset time, ΔT is the revised value, and ΔT>0.
具体的，自第1次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第2次化霜并记录化霜时间t2，当tb≤t1－t0≤ta时，TC＝TA，当t1－t0＜tb时，则TC＝TA－△T，当t1－t0＞ta时，TC＝TA+△T；Specifically, when the running time of the air conditioner reaches the first preset time after the end of the first defrosting and T B ≤ T C , control the air conditioner to start the second defrosting and record the defrosting time t 2 , when t b ≤t 1 －t 0 ≤t a , T C ＝T A , when t 1 －t 0 <t b , then T C ＝T A －△T, when t 1 －t 0 ＞t a , T C ＝T A +△T;
自第2次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第3次化霜并记录化霜时间t3，当tb≤t2－t0≤ta时，TC＝TA，当t2－t0＜tb时，则TC＝TA－△T，当t2－t0＞ta时，TC＝TA+△T；When the running time of the air conditioner reaches the first preset time after the end of the second defrosting and T B ≤ T C , control the air conditioner to start the third defrosting and record the defrosting time t 3 , when t b ≤ t 2 -t 0 ≤t a , T C =T A , when t 2 -t 0 <t b , then T C =T A -△T, when t 2 -t 0 >t a , T C =T A +△T;
自第3次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第4次化霜并记录化霜时间t4，当tb≤t3－t0≤ta时，TC＝TA，当t3－t0＜tb时，则TC＝TA－△T，当t3－t0＞ta时，TC＝TA+△T；When the running time of the air conditioner reaches the first preset time after the end of the third defrosting and T B ≤ T C , control the air conditioner to start the fourth defrosting and record the defrosting time t 4 , when t b ≤ t 3 -t 0 ≤t a , T C =T A , when t 3 -t 0 <t b , then T C =T A -△T, when t 3 -t 0 >t a , T C =T A +△T;
依次类推，自第n次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器开始第n+1次化霜并记录化霜时间tn+1，当tb≤tn－t0≤ta时，TC＝TA，当tn－t0＜tb时，则TC＝TA－△T，当tn－t0＞ta时，TC＝TA+△T。By analogy, when the running time of the air conditioner reaches the first preset time after the end of the nth defrosting and T B ≤ T C , control the air conditioner to start the n+1th defrosting and record the defrosting time t n+1 , when t b ≤t n －t 0 ≤t a , T C ＝T A , when t n －t 0 <t b , then T C ＝T A －△T, when t n －t 0 ＞t When a , T C =T A +△T.
上述空调器的除霜方法中，化霜最佳时间t0的取值和修订值△T的取值均不唯一，空调器的应用环境不同，取值不同，化霜最佳时间t0和修订值△T均需要通过试验获得。具体的，设定化霜管温TA和空调器运行的第一预设时间，观察除霜情况，进而确定化霜最佳时间t0；确定化霜最佳时间t0后，设定化霜管温TA和空调器运行时间，根据化霜最佳时间t0进行化霜，观察除霜情况，调整空调器开始化霜时室外换热器的管温，进而确定修订值△T。当然，还可通过其他试验方式获得化霜最佳时间t0和修订值△T，本发明实施例对此不做具体地限定。tb和ta也需要通过试验获得，本发明实施例对二者的具体值不做限定。In the defrosting method of the above-mentioned air conditioner, the value of the optimal defrosting time t 0 and the value of the revised value △T are not unique. The application environment of the air conditioner is different, and the values are different. The optimal defrosting time t 0 and The revised value △T needs to be obtained through experiments. Specifically, set the defrosting tube temperature T A and the first preset time of air conditioner operation, observe the defrosting situation, and then determine the best defrosting time t0 ; after determining the best defrosting time t0 , set the Frost tube temperature T A and air conditioner running time, defrost according to the best defrosting time t 0 , observe the defrosting situation, adjust the tube temperature of the outdoor heat exchanger when the air conditioner starts defrosting, and then determine the revised value △T. Of course, the optimal defrosting time t 0 and the revised value ΔT can also be obtained through other test methods, which are not specifically limited in this embodiment of the present invention. t b and t a also need to be obtained through experiments, and the specific values of the two are not limited in the embodiment of the present invention.
本发明实施例提供的空调器的除霜方法的原理为：当tb≤tn－t0≤ta时，表明第n次化霜时间和化霜最佳时间相差较小，第n次化霜时间较合适，则化霜管温TA无需修订，即修订管温TC为化霜管温TA；当tn－t0＜tb时，即第n次化霜时间较小于化霜最佳时间，表明第n次所结的霜较少，则第n+1次化霜时需要降低管温TB，以增加第n+1次化霜前所结的霜，即修订管温TC＝TA－△T；当tn－t0＞ta时，即第n次化霜时间较大于化霜最佳时间，表明第n次所结的霜较多，则第n+1次化霜时需要升高管温TB，以减少第n+1次化霜前所结的霜，即修订管温TC＝TA+△T。The principle of the air conditioner defrosting method provided by the embodiment of the present invention is: when t b ≤t n -t 0 ≤t a , it indicates that the difference between the nth defrosting time and the best defrosting time is small, and the nth defrosting time If the defrosting time is more appropriate, the defrosting tube temperature T A does not need to be revised, that is, the revised tube temperature T C is the defrosting tube temperature T A ; when t n -t 0 <t b , that is, the nth defrosting time is relatively small At the best time of defrosting, it shows that the frost formed in the nth defrosting time is less, so the tube temperature T B needs to be lowered in the n+1th defrosting time to increase the frost formed before the n+1th defrosting time, that is Revised tube temperature T C = T A - △ T; when t n - t 0 >t a , that is, the nth defrosting time is longer than the best defrosting time, indicating that the nth defrosting time is more frost, then It is necessary to increase the tube temperature T B during the n+1th defrosting to reduce the frost formed before the n+1th defrosting, that is, to revise the tube temperature T C =T A +△T.
本发明实施例提供的空调器的除霜方法，根据上一次的化霜时间，对化霜管温TA进行修订并获得修订管温TC，且根据该修订管温TC进行该次的化霜。这样，每一次化霜前都对化霜管温TA进行了修订，即实现了对化霜管温TA的动态修订，能够较准确地获知结霜情况，使得空调器的每一次化霜时间均控制在较合适的时间内，避免了出现“频繁化霜”和“化霜不完全”的问题，有效提高了除霜效果，进而降低了对空调器制热效果的影响。In the defrosting method of the air conditioner provided by the embodiment of the present invention, according to the last defrosting time, the defrosting tube temperature T A is revised to obtain the revised tube temperature T C , and the defrosting is carried out according to the revised tube temperature T C defrost. In this way, the defrosting tube temperature T A is revised before each defrosting, that is, the dynamic revision of the defrosting tube temperature T A is realized, and the frosting situation can be known more accurately, so that each defrosting of the air conditioner The time is controlled within a more appropriate time, which avoids the problems of "frequent defrosting" and "incomplete defrosting", effectively improves the defrosting effect, and then reduces the impact on the heating effect of the air conditioner.
优选的，上述实施例提供的空调器的除霜方法中，ta＞0，tb＜0，且ta＝|tb|。这样，能够更准确地修订化霜管温TA。当然，也可选择0＜tb＜ta，本发明实施例对此不做具体地限定。经过试验获得，当ta＝|tb|＝1时，空调器的除霜效果较好，因此优先选择ta＝|tb|＝1。Preferably, in the defrosting method for the air conditioner provided in the above embodiment, t a >0, t b <0, and t a =|t b |. In this way, the defrosting tube temperature T A can be revised more accurately. Of course, 0<t b <t a may also be selected, which is not specifically limited in this embodiment of the present invention. It is obtained through experiments that when t a =|t b |=1, the defrosting effect of the air conditioner is better, so t a =|t b |=1 is preferred.
基于上述实施例提供的空调器的除霜方法，本发明实施例还提供了一种空调器，请参考附图2，图2中：端部带有点的箭头表示空调器制热时冷媒的流向，端部不带点的箭头表示空调器制冷时冷媒的流向。Based on the defrosting method of the air conditioner provided by the above embodiment, the embodiment of the present invention also provides an air conditioner, please refer to the accompanying drawing 2, in Figure 2: the arrow with a dot at the end indicates the flow direction of the refrigerant when the air conditioner is heating , the arrow without a dot at the end indicates the flow direction of the refrigerant when the air conditioner is cooling.
本发明实施例提供的空调器包括：室外换热器3，与室外换热器3相连的节流装置4；设置于室外换热器3内，检测室外换热器3管温TB的第一温度传感器；与第一温度传感器相连，当空调器的运行时间达到第一预设时间且TB≤TA时，控制空调器第1次以化霜模式运行，并记录化霜时间t1的第一控制器，其中，TA为化霜管温；与第一温度传感器和第一控制器相连，第n次化霜时间为tn，自第n次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，控制空调器第n+1次以化霜模式运行，并记录化霜时间tn+1的第二控制器，其中，TC为修订管温，n≥1，当tb≤tn－t0≤ta时，TC＝TA，当tn－t0＜tb时，则TC＝TA－△T，当tn－t0＞ta时，TC＝TA+△T，ta为第二预设时间，tb为第三预设时间，t0为化霜最佳时间，△T为修订值，且△T＞0。The air conditioner provided by the embodiment of the present invention includes: an outdoor heat exchanger 3, a throttling device 4 connected to the outdoor heat exchanger 3; a second device installed in the outdoor heat exchanger 3 to detect the tube temperature TB of the outdoor heat exchanger 3 A temperature sensor; connected to the first temperature sensor, when the running time of the air conditioner reaches the first preset time and T B ≤ T A , control the air conditioner to run in the defrosting mode for the first time, and record the defrosting time t 1 The first controller of T A is the defrosting tube temperature; it is connected with the first temperature sensor and the first controller, the nth defrosting time is t n , and the operation of the air conditioner after the nth defrosting ends When the time reaches the first preset time and T B ≤ T C , the second controller that controls the air conditioner to run in the defrosting mode for the n+1th time and records the defrosting time t n+1 , where T C is the revised Tube temperature, n≥1, when t b ≤t n -t 0 ≤t a , T C =T A , when t n -t 0 <t b , then T C =T A -△T, when t When n -t 0 >t a , T C =T A +△T, t a is the second preset time, t b is the third preset time, t 0 is the best defrosting time, △T is the revised value , and ΔT>0.
需要说明的是，空调器只有以制热模式运行时，才会出现结霜的现象。因此检测室外换热器3的管温TB是在空调器以制热模式运行时进行检测的。化霜管温TA，是在预设条件下空调器需要除霜时室外换热器3的管温。空调器的运行时间是指，空调器的运行时间，即空调器自开机后到第1次开始化霜时运行的时间。化霜时间t1，是指空调器第1次化霜所用的时间，即空调器第1次化霜所用的时间。化霜最佳时间t0、修订值△T、tb和ta均需要通过试验获得。It should be noted that frosting occurs only when the air conditioner is running in heating mode. Therefore, the tube temperature TB of the outdoor heat exchanger 3 is detected when the air conditioner is running in the heating mode. The defrosting tube temperature T A is the tube temperature of the outdoor heat exchanger 3 when the air conditioner needs defrosting under preset conditions. The running time of the air conditioner refers to the running time of the air conditioner, that is, the time the air conditioner runs from the time it is turned on to the first time it starts defrosting. The defrosting time t 1 refers to the time for the first defrosting of the air conditioner, that is, the time for the first defrosting of the air conditioner. The optimal defrosting time t 0 , revised values △T, t b and t a all need to be obtained through experiments.
上述实施例提供的空调器的除霜过程为：The defrosting process of the air conditioner provided by the above-mentioned embodiment is:
第一温度传感器检测室外换热器3的管温TB； The first temperature sensor detects the tube temperature TB of the outdoor heat exchanger 3;
当空调器的运行时间达到第一预设时间且TB≤TA时，第一控制器控制空调器第1次以化霜模式运行，并记录化霜时间t1的第一控制器；When the running time of the air conditioner reaches the first preset time and T B ≤ T A , the first controller controls the air conditioner to run in the defrosting mode for the first time and records the defrosting time t 1 ;
自第1次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，第二控制器控制空调器开始第2次化霜并记录化霜时间t2，当tb≤t1－t0≤ta时，TC＝TA，当t1－t0＜tb时，则TC＝TA－△T，当t1－t0＞ta时，TC＝TA+△T；When the running time of the air conditioner reaches the first preset time after the end of the first defrosting and T B ≤ T C , the second controller controls the air conditioner to start the second defrosting and records the defrosting time t 2 , when t When b ≤t 1 -t 0 ≤t a , T C =T A , when t 1 -t 0 <t b , then T C =T A -△T, when t 1 -t 0 >t a , T C =T A +△T;
自第2次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，第二控制器控制空调器开始第3次化霜并记录化霜时间t3，当tb≤t2－t0≤ta时，TC＝TA，当t2－t0＜tb时，则TC＝TA－△T，当t2－t0＞ta时，TC＝TA+△T；When the running time of the air conditioner reaches the first preset time after the end of the second defrosting and T B ≤ T C , the second controller controls the air conditioner to start the third defrosting and records the defrosting time t 3 , when t When b ≤t 2 －t 0 ≤t a , T C ＝T A , when t 2 －t 0 <t b , then T C ＝T A －△T, when t 2 －t 0 ＞t a , T C =T A +△T;
自第3次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，第二控制器控制空调器开始第4次化霜并记录化霜时间t4，当tb≤t3－t0≤ta时，TC＝TA，当t3－t0＜tb时，则TC＝TA－△T，当t3－t0＞ta时，TC＝TA+△T；When the running time of the air conditioner reaches the first preset time after the end of the third defrosting and T B ≤ T C , the second controller controls the air conditioner to start the fourth defrosting and records the defrosting time t 4 , when t When b ≤t 3 －t 0 ≤t a , T C ＝T A , when t 3 －t 0 <t b , then T C ＝T A －△T, when t 3 －t 0 ＞t a , T C =T A +△T;
依次类推，自第n次化霜结束后空调器的运行时间达到第一预设时间且TB≤TC时，第二控制器控制空调器开始第n+1次化霜并记录化霜时间tn+1，当tb≤tn－t0≤ta时，TC＝TA，当tn－t0＜tb时，则TC＝TA－△T，当tn－t0＞ta时，TC＝TA+△T。By analogy, when the running time of the air conditioner reaches the first preset time after the end of the nth defrosting and T B ≤ T C , the second controller controls the air conditioner to start the n+1th defrosting and records the defrosting time t n+1 , when t b ≤t n -t 0 ≤t a , T C =T A , when t n -t 0 <t b , then T C =T A -△T, when t n - When t 0 >t a , T C =T A +ΔT.
本发明实施例提供的空调器的除霜原理为：当tb≤tn－t0≤ta时，表明第n次化霜时间和化霜最佳时间相差较小，第n次化霜时间较合适，则化霜管温TA无需修订，即修订管温TC为化霜管温TA；当tn－t0＜tb时，即第n次化霜时间较小于化霜最佳时间，表明第n次所结的霜较少，则第n+1次化霜时需要降低管温TB，以增加第n+1次化霜前所结的霜，即修订管温TC＝TA－△T；当tn－t0＞ta时，即第n次化霜时间较大于化霜最佳时间，表明第n次所结的霜较多，则第n+1次化霜时需要升高管温TB，以减少第n+1次化霜前所结的霜，即修订管温TC＝TA+△T。The defrosting principle of the air conditioner provided by the embodiment of the present invention is: when t b ≤t n -t 0 ≤t a , it indicates that the difference between the nth defrosting time and the best defrosting time is small, and the nth defrosting time If the time is appropriate, the defrosting tube temperature T A does not need to be revised, that is, the revised tube temperature T C is the defrosting tube temperature T A ; when t n -t 0 <t b , that is, the nth defrosting time is less than The optimal time of frost indicates that the amount of frost formed in the nth defrost is less, so the tube temperature T B needs to be lowered in the n+1th defrost to increase the frost formed before the n+1th defrost, that is, the revised tube temperature Temperature T C = T A - △ T; when t n - t 0 > t a , that is, the nth defrosting time is longer than the best defrosting time, indicating that there is more frost in the nth time, then the nth time When defrosting for +1 time, the tube temperature T B needs to be increased to reduce the frost formed before the n+1 defrosting time, that is, the revised tube temperature T C =T A +△T.
本发明实施例提供的空调器，通过第一温度传感器、第一控制器和第二控制器，实现了根据上一次的化霜时间，对化霜管温TA进行修订并获得修订管温TC，且根据该修订管温TC进行该次的化霜。这样，每一次化霜前都对化霜管温TA进行了修订，即实现了对化霜管温TA的动态修订，能够较准确地获知结霜情况，使得空调器的每一次化霜时间均控制在较合适的时间内，避免了出现“频繁化霜”和“化霜不完全”的问题，有效提高了除霜效果，进而降低了对空调器制热效果的影响。In the air conditioner provided by the embodiment of the present invention, through the first temperature sensor, the first controller and the second controller, the defrosting tube temperature T A can be revised according to the last defrosting time and the revised tube temperature T can be obtained. C , and defrost this time according to the revised tube temperature T C . In this way, the defrosting tube temperature T A is revised before each defrosting, that is, the dynamic revision of the defrosting tube temperature T A is realized, and the frosting situation can be known more accurately, so that each defrosting of the air conditioner The time is controlled within a more appropriate time, which avoids the problems of "frequent defrosting" and "incomplete defrosting", effectively improves the defrosting effect, and then reduces the impact on the heating effect of the air conditioner.
优选的，上述实施例提供的空调器中，ta＞0，tb＜0，且ta＝|tb|。这样，能够更准确地修订化霜管温TA。当然，也可选择0＜tb＜ta，本发明实施例对此不做具体地限定。经过试验获得，当ta＝|tb|＝1时，空调器的除霜效果较好，因此优先选择ta＝|tb|＝1。Preferably, in the air conditioner provided in the above embodiment, t a >0, t b <0, and t a =|t b |. In this way, the defrosting tube temperature T A can be revised more accurately. Of course, 0<t b <t a may also be selected, which is not specifically limited in this embodiment of the present invention. It is obtained through experiments that when t a =|t b |=1, the defrosting effect of the air conditioner is better, so t a =|t b |=1 is preferred.
上述实施例提供的空调器中，化霜管温TA可以通过室外环境温度进行确定。优选的，上述空调器还包括：检测室外环境温度的第二温度传感器；与第二温度传感器相连，根据室外环境温度确定化霜管温TA的处理单元，该处理单元分别与第一控制器和所述第二控制器相连。在实际应用过程中，需要进行多组试验。以室外环境温度作为参量，改变室外环境温度，记录空调器需要除霜时室外换热器3的管温，即化霜管温TA；最终获得不同室外环境温度对应的化霜管温TA，将这些数据输入空调器的处理单元中，从而根据室外环境温度确定化霜管温TA。当然也可根据室外环境温度和室外环境湿度以及运行时间综合确定，或者将化霜管温TA设为定值，本发明实施例对此不做具体地限定。In the air conditioner provided in the above embodiments, the defrosting tube temperature T A can be determined by the outdoor ambient temperature. Preferably, the above-mentioned air conditioner also includes: a second temperature sensor that detects the outdoor ambient temperature; a processing unit that is connected to the second temperature sensor and determines the temperature T A of the defrosting tube according to the outdoor ambient temperature, and the processing unit communicates with the first controller respectively connected to the second controller. In the actual application process, multiple sets of experiments are required. Take the outdoor ambient temperature as a parameter, change the outdoor ambient temperature, record the tube temperature of the outdoor heat exchanger 3 when the air conditioner needs defrosting, that is, the defrosting tube temperature T A ; finally obtain the defrosting tube temperature T A corresponding to different outdoor ambient temperatures , and input these data into the processing unit of the air conditioner, so as to determine the defrost tube temperature T A according to the outdoor ambient temperature. Of course, it can also be comprehensively determined according to the outdoor ambient temperature, outdoor ambient humidity, and running time, or set the defrosting tube temperature T A as a constant value, which is not specifically limited in this embodiment of the present invention.
为了便于安装，上述实施例提供的空调器中，第一控制器、第二控制器和处理单元集成于空调器的控制主板5。In order to facilitate installation, in the air conditioner provided in the above embodiment, the first controller, the second controller and the processing unit are integrated into the control board 5 of the air conditioner.
优选的，上述实施例提供的空调器中，第一温度传感器为管感温包2；第二温度传感器为环境感温包1，该环境感温包1设置于空调器的外壳体上。其中，管感温包2设置于室外换热器3的换热管上。这样，便于第一温度传感器和第二温度传感器的安装，当然，也可选择其他类型的温度传感器，本发明实施例对此不做具体地限定。Preferably, in the air conditioner provided in the above embodiment, the first temperature sensor is the tube temperature sensing package 2; the second temperature sensor is the environment temperature sensing package 1, and the environment temperature sensing package 1 is arranged on the outer casing of the air conditioner. Wherein, the tube temperature sensing package 2 is arranged on the heat exchange tube of the outdoor heat exchanger 3 . In this way, the installation of the first temperature sensor and the second temperature sensor is facilitated. Of course, other types of temperature sensors may also be selected, which is not specifically limited in this embodiment of the present invention.
上述实施例提供的空调器中，室内换热器6与节流装置4相连，压缩机7通过四通阀8与室内换热器6和室外换热器3相连。In the air conditioner provided in the above embodiments, the indoor heat exchanger 6 is connected to the throttling device 4 , and the compressor 7 is connected to the indoor heat exchanger 6 and the outdoor heat exchanger 3 through a four-way valve 8 .
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
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| CN105042786B (en) * | 2015-07-30 | 2018-09-11 | 广东美的制冷设备有限公司 | The control method and device of dehumidifier and dehumidifier |
| CN105650813B (en) * | 2016-01-11 | 2018-10-02 | 广东美的制冷设备有限公司 | The defrosting control method and device of air-conditioning |
| CN107917504B (en) * | 2017-10-11 | 2019-10-01 | 青岛海尔空调器有限总公司 | Air-conditioning and its defrosting control method |
| CN107655150A (en) * | 2017-10-16 | 2018-02-02 | 广东美的暖通设备有限公司 | Air-conditioner defrosting control device and method |
| CN111623470B (en) * | 2020-04-23 | 2021-07-27 | 海信（山东）空调有限公司 | Defrosting control method and system of air conditioner, storage medium and air conditioner |
| CN113339940A (en) * | 2021-05-31 | 2021-09-03 | 珠海格力电器股份有限公司 | Air conditioner defrosting control method and device, storage medium and air conditioner |
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