Anti-overheating and Anti-frosting control method for mobile air conditioner, and mobile air conditioner

Abstract

Disclosed in the present invention are an anti-overheating and anti-frosting control method for a mobile air conditioner, and a mobile air conditioner. The anti-overheating and anti-frosting control method for a mobile air conditioner comprises: measuring an indoor temperature Tr, a continuous operation time T1 of a compressor, and a radiator coil temperature Tp; operating a cooling mode; when the conditions Tr≤21°C and T1≥50 min are both met, or the conditions Tp≤0°C and T1≥10 min are both met, a mobile air conditioner entering an anti-freezing protection program, the compressor stopping operation, and an air conditioner fan blowing out air; operating a heating mode; when the condition Tp≥55°C is met, the mobile air conditioner entering a first anti-overheating program, and an outdoor fan electric-motor stopping operation; and when the conditions Tr≥29°C and T1≥50 min are both met, or the condition Tp≥63°C is met, the mobile air conditioner entering a second anti-overheating protection program, and the compressor stopping operation. Three parameters Tr, T1 and Tp are combined to perform determination to enter an anti-freezing protection program and an anti-overheating protection program at an appropriate time, such that the surface of a radiator is effectively prevented from overheating or frosting, and a heating effect and a cooling effect are ensured, and thus a user has a better usage experience.

Description

Mobile air conditioner overheating and anti-frost control method and mobile air conditioner Technical Field

[0001] The present invention relates to the technical field of mobile refrigeration devices, in particular to a mobile air conditioner overheating and anti-frost control method, and a mobile air conditioner using the mobile air conditioner overheating and anti-frost control method. Background Art

[0002] Mobile air conditioners, as the name suggests, are air conditioners that can be moved at will. The compressor, exhaust fan, electric heater, evaporator, air-cooled fin condenser and other devices are all available in the machine body. The machine body is equipped with a power plug, and the base of the casing is equipped with four casters, so that the air conditioner can be moved at will. At present, mobile air conditioner products on the market tend to focus on the appearance and functional complexity of the product, thus ignoring the user experience during the use of the machine. In related technologies, when the mobile air conditioner is used in cooling mode, the surface of the radiator will frost and freeze, resulting in poor cooling effect, thereby reducing the user experience; in some related technologies, when the mobile air conditioner is used in heating mode, the surface of the radiator will overheat or frost, resulting in poor heating effect, thereby reducing the user experience.

[0003] Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a mobile air conditioner anti-overheating and anti-frost control method. In addition to detecting the indoor temperature and the continuous operation time of the compressor, the mobile air conditioner anti-overheating and anti-frost control method also adds the detection of the heat dissipation coil temperature. The three parameters are comprehensively judged to timely enter the anti-freeze protection program in the cooling mode, and the first anti-overheating protection program and / or the second anti-overheating protection program in the heating mode. This effectively prevents overheating or frosting of the radiator surface, ensures heating and cooling effects, and provides a better user experience.

[0005] The present invention also provides a mobile air conditioner using the above mobile air conditioner overheating and frost prevention control method.

[0006] The mobile air conditioner overheating and frost prevention control method according to the present invention comprises:

[0007] Cooling mode: Detect indoor temperature Tr, compressor continuous operation time T1, and heat coil temperature Tp. When the first judgment condition: Tr ≤ 21 ° C, T1 ≥ 50 min are met at the same time, or the second judgment condition: Tp ≤ 0 ° C, T1 ≥ 10 min are met at the same time, the mobile air conditioner enters the anti-freeze protection program;

[0008] Heating mode: Detects indoor temperature Tr, compressor continuous operation time T1, and heat coil temperature Tp. When the third judgment condition Tp ≥ 55°C, the mobile air conditioner enters the first overheat protection program. When the fourth judgment condition Tr ≥ 29°C and T1 ≥ 50min are met simultaneously, or the fifth judgment condition: Tp ≥ 63°C is met, the mobile air conditioner enters the second overheat protection program.

[0009] Among them, when the anti-freeze protection program is run, the compressor stops running and the air conditioning fan blows to eliminate frost; when the first anti-overheating program is run, the outdoor fan motor stops running; when the second anti-overheating program is run, the compressor stops running.

[0010] The mobile air conditioner anti-overheating and anti-frost control method according to the present invention has at least the following beneficial effects: in addition to detecting the indoor temperature and the continuous operation time of the compressor, the detection of the heat dissipation coil temperature is also added, and the three parameters are comprehensively judged. When running in the cooling mode, the anti-freezing protection program can be entered in a timely manner, and when running in the heating mode, the first anti-overheating protection program and / or the second anti-overheating protection program can be entered in a timely manner, effectively avoiding overheating or frosting of the radiator surface, ensuring heating and cooling effects, and providing a better user experience.

[0011] According to the mobile air conditioner anti-overheating and anti-frost control method of the present invention, after entering the anti-freeze protection program, when it is detected that Tp ≥ 8°C, or it is detected that the anti-freeze protection program has been running for ≥ 5 minutes, the mobile air conditioner exits the anti-freeze protection program and re-runs the cooling mode.

[0012] According to the mobile air conditioner overheating and frost prevention control method of the present invention, after entering the first overheating prevention program, when it is detected that Tp≤48°C, the outdoor fan motor resumes operation.

[0013] According to the mobile air conditioner anti-overheating and anti-frost control method of the present invention, after the fourth judgment condition is met and the second anti-overheating protection program is entered, the compressor stop operation time T2 is detected, and when it is detected that T2 ≥ 5min, the compressor resumes operation.

[0014] According to the mobile air conditioner anti-overheating and anti-frost control method of the present invention, after the fifth judgment condition is met and the second anti-overheating protection program is entered, when it is detected that Tp≤48°C, the compressor resumes operation.

[0015] According to the mobile air conditioner overheating and anti-frost control method of the present invention, when operating in heating mode, the condenser coil temperature To is detected. When it is detected that T1 ≥ 5min, the heating mode operation time ≥ 50min, and To ≤ -5°C for 1 consecutive minute are simultaneously established, the mobile air conditioner enters the defrost program.

[0016] According to the mobile air conditioner overheating and anti-frost control method of the present invention, after entering the defrost program, the compressor and the outdoor fan motor stop running, and the four-way reversing valve stops after 1 minute. After the compressor and the outdoor fan motor have stopped for 1.5 minutes, the mobile air conditioner resumes the heating mode.

[0017] According to the mobile air conditioner overheating and anti-frost control method of the present invention, when operating in heating mode, the condenser coil temperature To is detected. When it is detected that T1 ≥ 5min, the time since the last defrost program is run ≥ 50min, and To ≤ -5℃ for 1 consecutive minute are simultaneously met, the mobile air conditioner enters the defrost program.

[0018] According to the mobile air conditioner overheating and anti-frost control method of the present invention, after entering the defrost program, the compressor and the outdoor fan motor stop running, and the four-way reversing valve stops after 1 minute. After the compressor and the outdoor fan motor have stopped for 1.5 minutes, the mobile air conditioner resumes the heating mode.

[0019] According to the mobile air conditioner of the present invention, the mobile air conditioner overheating and frosting prevention control method of the present invention is applied.

[0020] The mobile air conditioner according to the present invention has at least the following beneficial effects: during use, the mobile air conditioner has more precise control logic. In addition to detecting the indoor temperature and the continuous operation time of the compressor, the detection of the heat dissipation coil temperature is also added. The three parameters are comprehensively judged. When operating in the cooling mode, the anti-freeze protection program can be timely entered. When operating in the heating mode, the first anti-overheating protection program and / or the second anti-overheating protection program can be timely entered, effectively avoiding overheating or frosting of the radiator surface, ensuring heating and cooling effects, and providing a better user experience.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0023] FIG1 is a schematic diagram of the overall logic of a mobile air conditioner overheating and frost prevention control method according to an embodiment of the present invention;

[0024] FIG2 is a logic diagram of a cooling mode operation of a mobile air conditioner anti-overheating and anti-frosting control method according to an embodiment of the present invention;

[0025] FIG3 is a logic diagram of the heating mode of the mobile air conditioner overheating and frost prevention control method according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0031] Mobile air conditioners, as the name suggests, are air conditioners that can be moved at will. The compressor, exhaust fan, electric heater, evaporator, air-cooled fin condenser and other devices are all available in the machine body. The machine body is equipped with a power plug, and the base of the casing is equipped with four casters, so that the air conditioner can be moved at will. At present, mobile air conditioner products on the market tend to focus on the appearance and functional complexity of the product, thus ignoring the user experience during the use of the machine. In related technologies, when the mobile air conditioner is used in cooling mode, the surface of the radiator will frost and freeze, resulting in poor cooling effect, thereby reducing the user experience; in some related technologies, when the mobile air conditioner is used in heating mode, the surface of the radiator will overheat or frost, resulting in poor heating effect, thereby reducing the user experience.

[0032] To this end, as shown in Figures 1 to 3, the mobile air conditioner anti-overheating and anti-frost control method proposed by the present invention includes operating in cooling mode and heating mode. When the mobile air conditioner is operating in cooling mode, it detects the indoor temperature Tr, the continuous operation time of the compressor T1, and the heat coil temperature Tp. Specifically, when the first judgment condition: Tr ≤ 21°C and T1 ≥ 50 minutes are simultaneously met, or when the second judgment condition: Tp ≤ 0°C and T1 ≥ 10 minutes are simultaneously met, the mobile air conditioner enters the anti-freeze protection program. When the anti-freeze protection program is in operation, the compressor stops and the air conditioner fan blows air, achieving the effect of intelligent defrosting in the blowing mode.

[0033] Additionally, when the mobile air conditioner is operating in heating mode, it monitors the indoor temperature Tr, the compressor continuous operation time T1, and the cooling coil temperature Tp. Specifically, if the third judgment condition, Tp ≥ 55°C, is met, the mobile air conditioner enters the first overheat protection program. If the fourth judgment condition, Tr ≥ 29°C and T1 ≥ 50 minutes, is met simultaneously, or if the fifth judgment condition, Tp ≥ 63°C, is met, the mobile air conditioner enters the second overheat protection program. During the first overheat protection program, the outdoor fan motor stops; during the second overheat protection program, the compressor stops.

[0034] It should be noted that in addition to detecting the indoor temperature and the continuous running time of the compressor, the detection of the heat dissipation coil temperature is also added. The three parameters are comprehensively judged. When running in the cooling mode, the anti-freeze protection program can be timely entered. When running in the heating mode, the first anti-overheating protection program and / or the second anti-overheating protection program can be timely entered. It can effectively avoid overheating or frosting of the radiator surface, ensure heating and cooling effects, and provide better user experience.

[0035] The following describes the control logic for the cooling mode and the heating mode respectively.

[0036] Referring to Figure 2 , after entering the anti-freeze protection program, if Tp ≥ 8°C or if the anti-freeze protection program has been running for ≥ 5 minutes, the mobile air conditioner exits the anti-freeze protection program and resumes cooling mode. Otherwise, the mobile air conditioner remains in the anti-freeze protection program. Specifically, if Tp ≥ 8°C and the anti-freeze protection program has been running for ≥ 5 minutes are not met, the mobile air conditioner remains in the anti-freeze protection program, during which the compressor stops and the air conditioner fan blows air. In some embodiments, the air conditioner fan uses a high gear to achieve an intelligent defrosting effect, preventing frost from forming on the radiator.

[0037] Referring to Figure 3, after entering the first overheat protection routine, the outdoor fan motor resumes operation when Tp ≤ 48°C is detected. At this point, stopping the outdoor fan motor effectively reduces the temperature and prevents the portable air conditioner from overheating. However, in some cases, even if the outdoor fan motor stops, the radiator coil still cannot effectively cool down. To address this, while the portable air conditioner continues to operate in heating mode, the radiator coil temperature continues to rise. When the fifth judgment condition: Tp ≥ 63°C is met, the portable air conditioner enters the second overheat protection routine, at which point the compressor also stops. Furthermore, both the outdoor fan motor and the compressor stop operating until the radiator coil temperature Tp ≤ 48°C, at which point they resume operation.

[0038] In addition, if the heating mode is run for a long time but the heating effect is poor, referring to the fourth judgment condition Tr≥29°C and T1≥50min, the compressor stops running and resumes running after the running time T2≥5min.

[0039] Furthermore, when operating in heating mode, the condenser coil temperature To, the compressor's continuous operating time T1, and the heating mode operating time are comprehensively detected, allowing the defrost program to be entered at the appropriate time. Specifically, when operating in heating mode, if it is detected that T1 ≥ 5 minutes, the heating mode operating time ≥ 50 minutes, and To ≤ -5°C for 1 minute are all met simultaneously, the mobile air conditioner enters the defrost program. After entering the defrost program, the compressor and outdoor fan motor stop running, and after 1 minute, the four-way reversing valve stops. After the compressor and outdoor fan motor have stopped for 1.5 minutes, the mobile air conditioner resumes heating mode. In addition to detecting the heating mode operating time, it is also possible to determine whether the defrost program has been run. For example, when operating in heating mode, if it is detected that T1 ≥ 5 minutes, the time since the last defrost program was run ≥ 50 minutes, and To ≤ -5°C for 1 minute are all met simultaneously, the mobile air conditioner enters the defrost program. Similarly, after entering the defrost program, the compressor and outdoor fan motor stop running, and the four-way reversing valve stops after 1 minute. After the compressor and outdoor fan motor stop for 1.5 minutes, the mobile air conditioner restarts the heating mode.

[0040] According to an embodiment of the present invention, a mobile air conditioner employs a method for preventing overheating and frosting of a mobile air conditioner according to an embodiment of the present invention. By adopting the method for preventing overheating and frosting of a mobile air conditioner according to an embodiment of the present invention, the mobile air conditioner has more precise control logic during use. In addition to detecting the indoor temperature and the continuous operating time of the compressor, the temperature of the heat sink coil is also detected. By comprehensively judging these three parameters, the mobile air conditioner can timely enter an anti-freeze protection program when operating in cooling mode, and can timely enter a first anti-overheat protection program and / or a second anti-overheat protection program when operating in heating mode. This effectively prevents overheating or frosting of the radiator surface, ensures heating and cooling effects, and provides a better user experience.

[0041] Other structures and operations of the mobile air conditioner according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A mobile air conditioner overheating and frost prevention control method, characterized in that: include: Operation cooling mode: detect indoor temperature Tr, compressor continuous operation time T1, heat dissipation coil temperature Tp. When the first judgment condition: Tr≤21℃, T1≥50min are met at the same time, or the second judgment condition: Tp≤0℃, T1≥10min are met at the same time, the mobile air conditioner enters the anti-freeze protection program; Operation heating mode: detect indoor temperature Tr, compressor continuous operation time T1, heat dissipation coil temperature Tp. When the third judgment condition Tp≥55℃, the mobile air conditioner enters the first overheating prevention program; When the fourth judgment condition Tr≥29℃, T1≥50min is met at the same time, or the fifth judgment condition: Tp≥63℃ is met, the mobile air conditioner enters the second overheat protection program; Among them, when the anti-freeze protection program is run, the compressor stops running and the air conditioning fan blows to eliminate frost; when the first anti-overheating program is run, the outdoor fan motor stops running; when the second anti-overheating program is run, the compressor stops running.

2. The mobile air conditioner overheating and frost prevention control method according to claim 1, characterized in that: After entering the anti-freeze protection program, when it is detected that Tp ≥ 8°C, or it is detected that the anti-freeze protection program has been running for ≥ 5 minutes, the mobile air conditioner exits the anti-freeze protection program and re-runs the cooling mode.

3. The mobile air conditioner overheating and frost prevention control method according to claim 1, characterized in that: After entering the first overheating protection program, when Tp≤48℃ is detected, the outdoor fan motor resumes operation.

4. The mobile air conditioner overheating and frost prevention control method according to claim 1, characterized in that: After the fourth judgment condition is met and the second overheat protection program is entered, the compressor stop time T2 is detected, and when it is detected that T2≥5min, the compressor resumes operation.

5. The mobile air conditioner overheating and frosting prevention control method according to claim 1, 3 or 4, characterized in that: After the fifth judgment condition is met and the second overheat protection program is entered, when it is detected that Tp≤48°C, the compressor resumes operation.

6. The mobile air conditioner overheating and frost prevention control method according to claim 1, characterized in that: When running in heating mode, the condenser coil temperature To is detected. When it is detected that T1 ≥ 5min, the heating mode operation time ≥ 50min, and To ≤ -5℃ for 1 consecutive minute are simultaneously established, the mobile air conditioner enters the defrost program.

7. The mobile air conditioner overheating and frost prevention control method according to claim 1 or 6, characterized in that: After entering the defrost program, the compressor and the outdoor fan motor stop running, and the four-way reversing valve stops after 1 minute. After the compressor and the outdoor fan motor stop for 1.5 minutes, the mobile air conditioner restarts the heating mode.

8. The mobile air conditioner overheating and frost prevention control method according to claim 1 or 6, characterized in that: When running in heating mode, the condenser coil temperature To is detected. When it is detected that T1 ≥ 5min, the time since the last defrost program is run ≥ 50min, and To ≤ -5℃ for 1 consecutive minute are all met at the same time, the mobile air conditioner enters the defrost program.

9. The mobile air conditioner overheating and frost prevention control method according to claim 8, characterized in that: After entering the defrost program, the compressor and the outdoor fan motor stop running, and the four-way reversing valve stops after 1 minute. After the compressor and the outdoor fan motor stop for 1.5 minutes, the mobile air conditioner restarts the heating mode.

10. Mobile air conditioner, characterized in that: The mobile air conditioner overheating and frost prevention control method as described in any one of claims 1 to 9 is applied.

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