US20210302045A1 - Method for conditioning indoor air - Google Patents

Method for conditioning indoor air Download PDF

Info

Publication number
US20210302045A1
US20210302045A1 US16/827,742 US202016827742A US2021302045A1 US 20210302045 A1 US20210302045 A1 US 20210302045A1 US 202016827742 A US202016827742 A US 202016827742A US 2021302045 A1 US2021302045 A1 US 2021302045A1
Authority
US
United States
Prior art keywords
air
preset operation
detecting
indoor
operation includes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/827,742
Inventor
Marcel Kermer
Daniel Paul Dykes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aeotec Technology Shenzhen Ltd Co
Original Assignee
Aeotec Technology Shenzhen Ltd Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aeotec Technology Shenzhen Ltd Co filed Critical Aeotec Technology Shenzhen Ltd Co
Priority to US16/827,742 priority Critical patent/US20210302045A1/en
Assigned to Aeotec Technology (Shenzhen) Ltd., Co. reassignment Aeotec Technology (Shenzhen) Ltd., Co. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DYKES, Daniel Paul, KERMER, Marcel
Publication of US20210302045A1 publication Critical patent/US20210302045A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/0008—Control or safety arrangements for air-humidification
    • 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
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • 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
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/81—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the air supply to heat-exchangers or bypass channels
    • 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
    • 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
    • F24F2110/20—Humidity

Definitions

  • the disclosure relates to the technical field of air conditioning, and particularly to a method for conditioning indoor air.
  • the disclosure provides a method for conditioning the indoor air, the method comprises the following steps.
  • the detecting indexes include an temperature, air humidity and air mold density.
  • the first preset operation includes opening an indoor air conditioner in a cooling mode to cool the air
  • the second preset operation includes opening the indoor air conditioner in a heating mode to heat the air.
  • the first preset operation includes increasing a rotating speed of an indoor air fan to decrease the air temperature
  • the second preset operation includes decrease the rotating speed of the indoor air fun to increase the air temperature
  • the first preset operation includes opening an indoor ventilator to increase airflow
  • the second preset operation includes closing the indoor ventilator to decrease the airflow
  • the first preset operation includes opening an indoor drier to decrease the air humidity
  • the second preset operation includes opening an indoor humidifier to increase the air humidity
  • the first preset operation includes opening an indoor air conditioner in a dehumidification mode to decrease the air humidity
  • the second preset operation includes opening an indoor humidifier to increase the air humidity
  • the first preset operation includes opening an indoor air fan to increase airflow and hence decrease the air humidity
  • the second preset operation includes opening an indoor humidifier to increase the air humidity
  • the first preset operation includes opening an indoor ultraviolet lamp to decrease the air mold density.
  • the first preset operation includes, opening an indoor air purifier to decrease the air mold density.
  • the method for conditioning indoor air provided in the present application is capable of detecting the indoor air automatically and controlling corresponding electric appliances to work according to the detecting value automatically, which makes the air return to a reasonable range and improves the intelligence degree of the electric appliances.
  • FIG. 1 is a flow chart of a method for conditioning indoor air according to the disclosure
  • FIG. 2 is a schematic diagram of a system for conditioning indoor air according to the disclosure.
  • FIG. 3 is a schematic diagram, showing the relationship among the temperature, humidity and mold density in the method for conditioning the indoor air according to the disclosure.
  • the present application provides a method for conditioning indoor air in this embodiment.
  • the method comprises the following steps.
  • the sensors are first used to detect the value of any one of detecting indexes of the indoor air.
  • the detecting indexes include air temperature, air humidity and air mold density.
  • the air mold density refers to the amount of mold in unit volume of air.
  • the sensors include temperature sensor, humidity sensor and mold density sensor.
  • the sensors may also include other sensors, such as particle density sensor and so on.
  • the detecting value is then transmitted from the sensor to a controller in which the detecting value is compared with preset thresholds. If the detecting value is within a present range, it indicates that the air index is normal.
  • the controller executes a next operation at this time, for example, if the next operation is continuing detecting the air index, the controller hence detecting the air index continuously. If the detecting value is not within the preset range, it is determined whether the detecting value is greater than the upper limit or smaller than the lower limit. In this embodiment, it is determined whether the detecting value is greater than the upper limit at this time. If the detecting value is greater than the upper limit, the controller hence controls the electric appliances to execute a first preset operation to make the detecting value of the detecting index of the indoor air return to the preset range.
  • the controller (such as PLC) hence controls the electric appliances to execute a second preset operation to make the detecting value of the detecting index of the indoor air return to the preset range.
  • the first preset operation when the detecting index is the air temperature, the first preset operation includes opening an indoor air conditioner in a cooling mode to cool the air, and the second preset operation includes opening the indoor air conditioner in a heating mode to heat the air.
  • the first preset operation when the detecting index is the air temperature, the first preset operation includes increasing at rotating speed of an indoor air time to decrease the air temperature, and the second preset operation includes decrease the rotating speed of the indoor air fun to increase the air temperature.
  • the fast preset operation when the detecting index is the air temperature, the fast preset operation includes opening an indoor ventilator to increase airflow, and the second preset operation includes closing the indoor ventilator to decrease the airflow.
  • the first preset operation when the detecting index is the air humidity, the first preset operation includes opening an indoor drier to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • the first preset operation when the detecting index is the air humidity, the first preset operation includes opening an indoor air conditioner in a dehumidification mode to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • the first preset operation when the detecting index is the air humidity, the first preset operation includes opening an indoor air fun to increase airflow and hence decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • the first preset operation includes opening an indoor ultraviolet lamp to decrease the air mold density.
  • the first preset operation includes opening an indoor air purifier to decrease the air mold density.
  • the relationship between the mold density of the indoor air and the temperature and humidity is shown.
  • the mold density can be adjusted by controlling the temperature and humidity according the method described above.
  • the method for conditioning indoor air provided in the present application is capable of detecting the indoor air automatically and controlling corresponding electric appliances to work according to the detecting value automatically, which makes the air return to a reasonable range and improves the intelligence degree of the electric appliances.

Abstract

A method for conditioning indoor air comprises the steps of obtaining a detecting value of any one of detecting indexes of the indoor air; determining whether the detecting value is within a preset range; if yes, executing a next operation; if no, determining whether the detecting value is greater than an upper limit of the preset range; if yes, executing a first preset operation to, make the detecting value return to the preset range; and if no, executing a second preset operation to make the detecting value return to the preset range. The method for conditioning indoor air provided in the present application is capable of detecting the indoor air automatically and controlling corresponding electric appliances to work according to the detecting value automatically, which makes the air return to a reasonable range and improves the intelligence degree of the electric appliances.

Description

    TECHNICAL FIELD
  • The disclosure relates to the technical field of air conditioning, and particularly to a method for conditioning indoor air.
    • BACKGROUND OF THE PRESENT INVENTION
  • With the development of economy and the progress of technology, the buildings in city are built higher and higher. More and more people move into cities, which brings a series of problems such as traffic jam, environmental pollution and son on.
  • In a certain time of the year, the big cities in the north of China suffer from fog and haze weather, and the in of the indoor air fluctuate at any time, which bothers people live and work indoor. We need to keep the indoor air clean for normal work and life.
    • SUMMARY OF PRESENT INVENTION
  • Aiming at above-mentioned problems, the disclosure provides a method for conditioning the indoor air, the method comprises the following steps.
  • obtaining a detecting value of any one of detecting is of the indoor air;
  • determining whether the detecting value is within a preset range;
  • if yes, executing a next operation;
  • if no, determining whether the detecting value is greater than an upper limit of the preset range;
  • if yes, executing a first preset operation to make the detecting value return to the preset range; and
  • if no, executing a second preset operation to make the detecting value return to the preset range,
  • Advantageously, the detecting indexes include an temperature, air humidity and air mold density.
  • Advantageously, when the detecting index is the air temperature, the first preset operation includes opening an indoor air conditioner in a cooling mode to cool the air, and the second preset operation includes opening the indoor air conditioner in a heating mode to heat the air.
  • Advantageously, when the detecting index is the air temperature, the first preset operation includes increasing a rotating speed of an indoor air fan to decrease the air temperature, and the second preset operation includes decrease the rotating speed of the indoor air fun to increase the air temperature.
  • Advantageously, when the detecting index is the air temperature, the first preset operation includes opening an indoor ventilator to increase airflow, and the second preset operation includes closing the indoor ventilator to decrease the airflow.
  • Advantageously, when the detecting index is the air humidity, the first preset operation includes opening an indoor drier to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • Advantageously, when the detecting index is the air humidity, the first preset operation includes opening an indoor air conditioner in a dehumidification mode to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • Advantageously, when the detecting index is the air humidity, the first preset operation includes opening an indoor air fan to increase airflow and hence decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • Advantageously, when the detecting index is the air mold density, the first preset operation includes opening an indoor ultraviolet lamp to decrease the air mold density.
  • Advantageously, when the detecting index is the air mold density, the first preset operation includes, opening an indoor air purifier to decrease the air mold density.
  • The method for conditioning indoor air provided in the present application is capable of detecting the indoor air automatically and controlling corresponding electric appliances to work according to the detecting value automatically, which makes the air return to a reasonable range and improves the intelligence degree of the electric appliances.
    • DESCRIPTION OF THE DRAWINGS
  • In order to make the technical solutions in the disclosure or in the prior art described more clearly, the drawings associated to the description of the embodiments or the prior art will be illustrated concisely hereinafter. Obviously, the drawings described below are only some embodiments according to the disclosure. Numerous drawings therein will be apparent to one of ordinary skill in the art based on the drawings described in the disclosure without creative efforts.
  • FIG. 1 is a flow chart of a method for conditioning indoor air according to the disclosure;
  • FIG. 2 is a schematic diagram of a system for conditioning indoor air according to the disclosure; and
  • FIG. 3 is a schematic diagram, showing the relationship among the temperature, humidity and mold density in the method for conditioning the indoor air according to the disclosure.
    •  DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • In order to make the objects, technical solution and advantages of the present disclosure more clear, the present disclosure will be further described in detail with reference to the accompanying drawings and embodiments below. It should be understood that embodiments described here are only for explaining the present disclosure and the disclosure, however, should not be constructed as limited to the embodiment as set forth herein, In addition, the descriptions to the well-known structure and technology are omitted in the following descriptions to avoid unnecessarily confusing with the concept of the present invention.
  • As shown in FIGS. 1-3, the present application provides a method for conditioning indoor air in this embodiment. The method comprises the following steps.
  • S101: obtaining a detecting value of any one of detecting indexes of the indoor air;
  • S102: determining whether the detecting value is within a preset range;
  • S103: if yes, executing a next operation;
  • S104: if no, determining whether the detecting value is greater than an upper limit of the preset range;
  • S105: if yes, executing a first preset operation to make the detecting value return to the preset range; and
  • S106; if no, executing a second preset operation to make the detecting value return to the preset range.
  • As shown in FIG. 2, when this method is used according to this embodiment, the sensors are first used to detect the value of any one of detecting indexes of the indoor air. In the embodiment of this application, the detecting indexes include air temperature, air humidity and air mold density. The air mold density refers to the amount of mold in unit volume of air. Accordingly, the sensors include temperature sensor, humidity sensor and mold density sensor. The sensors may also include other sensors, such as particle density sensor and so on. The detecting value is then transmitted from the sensor to a controller in which the detecting value is compared with preset thresholds. If the detecting value is within a present range, it indicates that the air index is normal. The controller executes a next operation at this time, for example, if the next operation is continuing detecting the air index, the controller hence detecting the air index continuously. If the detecting value is not within the preset range, it is determined whether the detecting value is greater than the upper limit or smaller than the lower limit. In this embodiment, it is determined whether the detecting value is greater than the upper limit at this time. If the detecting value is greater than the upper limit, the controller hence controls the electric appliances to execute a first preset operation to make the detecting value of the detecting index of the indoor air return to the preset range. If the detecting value is not greater than the upper limit, it means that the detecting value is smaller than the lower limit, the controller (such as PLC) hence controls the electric appliances to execute a second preset operation to make the detecting value of the detecting index of the indoor air return to the preset range.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air temperature, the first preset operation includes opening an indoor air conditioner in a cooling mode to cool the air, and the second preset operation includes opening the indoor air conditioner in a heating mode to heat the air.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air temperature, the first preset operation includes increasing at rotating speed of an indoor air time to decrease the air temperature, and the second preset operation includes decrease the rotating speed of the indoor air fun to increase the air temperature.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air temperature, the fast preset operation includes opening an indoor ventilator to increase airflow, and the second preset operation includes closing the indoor ventilator to decrease the airflow.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air humidity, the first preset operation includes opening an indoor drier to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air humidity, the first preset operation includes opening an indoor air conditioner in a dehumidification mode to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air humidity, the first preset operation includes opening an indoor air fun to increase airflow and hence decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air mold density, the first preset operation includes opening an indoor ultraviolet lamp to decrease the air mold density.
  • As shown in FIGS. 1-3, in the embodiment of this application, when the detecting index is the air mold density, the first preset operation includes opening an indoor air purifier to decrease the air mold density.
  • As shown in FIG. 3, in the embodiment of this application, the relationship between the mold density of the indoor air and the temperature and humidity is shown. The mold density can be adjusted by controlling the temperature and humidity according the method described above.
  • The method for conditioning indoor air provided in the present application is capable of detecting the indoor air automatically and controlling corresponding electric appliances to work according to the detecting value automatically, which makes the air return to a reasonable range and improves the intelligence degree of the electric appliances.
  • It should be understood that embodiments described above are only for illustrating or explaining the principle of the present disclosure and the disclosure, however, should not be constructed as limited to the embodiment as set forth above. Therefore, any modification, equivalent alternation, improvement and so on obtained without departing from the spirit and scope of the present disclosure fails into the protect scope of the present invention. Moreover, the appended claims are aimed at including all the variations and modifications falling into the scope and boundary of the claims or the equivalent scope and boundary of the claims.

Claims (10)

We claim:
1. A method for conditioning indoor air, comprising:
obtaining a detecting value of any one of detecting indexes of the indoor air;
determining whether the detecting value is within a preset range;
if yes, executing a next operation;
if no, determining whether the detecting value is greater than an upper limit of the preset range;
if yes, executing a first preset operation to make the detecting value return to the preset range; and
if no, executing a second preset operation to make the detecting value return to the preset range.
2. The method for conditioning indoor air according to claim 1, wherein the detecting indexes include air temperature, air humidity and air mold density.
3. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air temperature, the first preset operation includes opening an indoor air conditioner in a cooling mode to cool the air, and the second preset operation includes opening the indoor air conditioner in a heating mode to heat the air.
4. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air temperature, the first preset operation includes increasing a rotating speed of an indoor air fan to decrease the air temperature, and the second preset operation includes decrease the rotating speed of the indoor air flits to increase the air temperature.
5. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air temperature, the first preset operation includes opening an indoor ventilator to increase airflow, and the second preset operation includes closing the indoor ventilator to decrease the airflow.
6. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air humidity, the first preset operation includes opening an indoor drier to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
7. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air humidity, the first preset operation includes opening an indoor air conditioner in a dehumidification mode to decrease the air humidity, and the second preset operation includes opening an indoor humidifier to increase the air humidity.
8. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air humidity, the first preset operation includes opening an indoor air fun to increase airflow and hence decrease the air humidity, and the second, preset operation includes opening an indoor humidifier to increase the air humidity.
9. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air mold density the first preset operation includes opening an indoor ultraviolet lamp to decrease the air mold density.
10. The method for conditioning indoor air according to claim 1, wherein when the detecting index is the air mold density, the first preset operation includes opening an indoor air purifier to decrease the air mold density.
US16/827,742 2020-03-24 2020-03-24 Method for conditioning indoor air Abandoned US20210302045A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/827,742 US20210302045A1 (en) 2020-03-24 2020-03-24 Method for conditioning indoor air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16/827,742 US20210302045A1 (en) 2020-03-24 2020-03-24 Method for conditioning indoor air

Publications (1)

Publication Number Publication Date
US20210302045A1 true US20210302045A1 (en) 2021-09-30

Family

ID=77857102

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/827,742 Abandoned US20210302045A1 (en) 2020-03-24 2020-03-24 Method for conditioning indoor air

Country Status (1)

Country Link
US (1) US20210302045A1 (en)

Similar Documents

Publication Publication Date Title
CA2918085C (en) An hvac system and an hvac controller configured to operate the hvac system based on air pollutant data and user comfort
KR102572499B1 (en) System and method of controlling air quality, and analyzing server
CN105890119A (en) Method and device for controlling air conditioner
CN104949270A (en) Refrigeration control method and device of air conditioner and air conditioner
CN109028449B (en) Control method and device for preventing condensation of air conditioner
KR101820849B1 (en) Apparatus for controlling of meat dryer
CN112567183A (en) Air conditioner, control device, air conditioning method, and program
CN102762280A (en) Dehumidifier
CN102635923B (en) The control method of 10kV power distribution station automatic control energy-saving systems
CN103673107A (en) Air conditioner and control method and device thereof
JP2017112916A (en) Control device and agricultural house
CN102494388A (en) Control method and system for preventing musty odor from car air-conditioners and car
CN109595761A (en) Control method, device and the air conditioner with it of air conditioner
CN105953358A (en) Safety protection method and device for air conditioner and air conditioner
CN110645645A (en) Control method of anti-condensation dehumidifying device
EP3885660A1 (en) Method for conditioning indoor air
CN112128923A (en) Air conditioner and control method thereof
US20210302045A1 (en) Method for conditioning indoor air
CN106440243A (en) Air conditioner humidification system and control method
CN116489978B (en) Computer lab energy-saving optimization control system based on artificial intelligence
JP6053563B2 (en) Heat exchange ventilator
CN109612040A (en) Control method, device, air conditioner and the storage medium of air conditioner
CN208624148U (en) A kind of heat preservation temperature control grain storage system
CN109210638B (en) A kind of dehumidification control method of air conditioner and the air conditioner
CN202561949U (en) Base station intelligent air ventilating and energy saving system

Legal Events

Date Code Title Description
AS Assignment

Owner name: AEOTEC TECHNOLOGY (SHENZHEN) LTD., CO., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KERMER, MARCEL;DYKES, DANIEL PAUL;REEL/FRAME:052203/0092

Effective date: 20200324

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION