Combining air cleaning methods for improved anti-contaminant efficacy and air cleaning arrays

Patent metadata

Field	Value
Publication number	US-11577197-B2
Application number	US-202117646630-A
Country	US
Kind code	B2
Filing date	Dec 30, 2021
Priority date	Mar 26, 2021
Publication date	Feb 14, 2023
Grant date	Feb 14, 2023

Abstract

Methods and systems described perform air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system by detecting a concentration of airborne contaminants in a space serviced by the HVACR system. The detected concentration of airborne contaminants is determined whether it exceeds a threshold relative to a capacity of a first air cleaner. When the detected concentration of airborne contaminants exceeds the threshold, a second air cleaner is selected and enabled to be activated in the space. When the detected concentration of airborne contaminants does not exceed the threshold, the first air cleaner is selected and enabled to be activated in the space. The first air cleaner has a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, treats the space at a lower concentration of airborne contaminants. The second air cleaner includes specifically designed cleaner modules.

First claim

We claim:

1. A method for air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system, comprising:
detecting, with a sensor, a detected concentration of airborne contaminants in a space serviced by the HVACR system;
determining, with a controller, whether the detected concentration of airborne contaminants exceeds a threshold relative to a capacity of a first air cleaner;
when the detected concentration of airborne contaminants exceeds the threshold, selecting with a controller a second air cleaner, and enabling with a controller the second air cleaner to be activated in the space serviced by the HVACR system; and
when the detected concentration of airborne contaminants does not exceed the threshold, selecting with a controller the first air cleaner, and enabling with a controller the first air cleaner to be activated in the space serviced by the HVACR system,
the first air cleaner having a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, to treat the space serviced by the HVACR system at a lower concentration of airborne contaminants.

2. The method of claim 1 , wherein the capacity of the first air cleaner being a number of molecules of cleaning material the first air cleaner can generate, and the threshold being a stoichiometric ratio of the molecules of cleaning material to molecules of the airborne contaminants.

3. The method of claim 1 , wherein the HVAC system is one of a ducted system or a transport system.

4. The method of claim 1 , wherein the first air cleaner including a gaseous hydrogen peroxide generator.

5. The method of claim 1 , wherein the second air cleaner being a photocatalytic oxidation air cleaner.

6. The method of claim 1 , wherein the second air cleaner comprising:
one or more cleaner modules, each of the one or more cleaner modules mounted within a frame, the frame being a four sided parallelogram with a right angle;
an electrical connector mounted on each of the one or more cleaner modules, the electrical connector to connect the second air cleaner to power and to a control,
each of the one or more cleaner modules includes four cells,
the one or more cleaner modules consisting of one to six, eight, or twelve cleaner modules,
the electrical connector including at least three wiring connections,
the at least three wiring connections having a first and a second wiring location on opposing ends relative to each other, the first and second wiring locations configured to serially connect one of the one or more cleaner modules to another cleaner module, and
a third wiring location being on a side that is the same as one of the first or second wiring locations and at an opposite end from the one of the first or second wiring location, and the third wiring location located on a different side than the other of the first or second wiring location, the third wiring location configured to allow rotation of the module and to serially connect the one of the one or more cleaner modules to another cleaner module, and
the second air cleaner being housed in a ducted system and within the air flow path.

7. The method of claim 6 , wherein each frame being a dimension of at or about 11⅜ in×23⅜ in×1¾ in, at or about 19⅜ in×19⅜ in×1¾ in, at or about 19⅜ in×23⅜ in ×1¾ in, or at or about 23⅜ in×23⅜ in×1¾ in.

8. A system for air cleaning and/or sanitization in a heating, ventilation, air conditioning, and/or refrigeration (HVACR) system, comprising:
a compressor;
a condenser;
an expander;
an evaporator,
the compressor, condenser, expander, and evaporator arranged as a fluidly connected circuit to heat and/or cool a space serviced by the HVACR system;
an air flow path, the air flow path to deliver air to the space serviced by the HVACR system;
a fan within the air flow path,
one or more of the condenser and evaporator of the fluidly connected circuit in a heat exchange relationship with the air flow path;
a first air cleaner having a capacity, the first air cleaner within the air flow path;
a second air cleaner, the second air cleaner within the air flow path;
a controller to control activation of the first air cleaner and the second air cleaner; and
a sensor to detect a concentration of airborne contaminants in the space serviced by the HVAC system,
the controller to receive the detected concentration of airborne contaminants in the space serviced by the HVAC system, and to determine whether the detected concentration of airborne contaminants exceeds a threshold relative to the capacity of the first air cleaner;
when the detected concentration of airborne contaminants exceeds the threshold, the controller selects the second air cleaner, and enables the second air cleaner to be activated in the space serviced by the HVACR system; and
when the detected concentration of airborne contaminants does not exceed the threshold, the controller selects the first air cleaner, and enables the first air cleaner to be activated in the space serviced by the HVACR system,
the first air cleaner having a cleaning material different from the second air cleaner, and the first air cleaner, relative to the second air cleaner, to treat the space serviced by the HVACR system at a lower concentration of airborne contaminants.

9. The system of claim 8 , wherein the capacity of the first air cleaner being a number of molecules of cleaning material the first air cleaner can generate, and the threshold being a stoichiometric ratio of the molecules of cleaning material to molecules of the airborne contaminants.

10. The system of claim 8 , wherein the HVAC system is a ducted system.

11. The system of claim 8 , wherein the first air cleaner including a gaseous hydrogen peroxide generator.

12. The system of claim 8 , wherein the second air cleaner being a photocatalytic oxidation air cleaner.

13. The system of claim 8 , wherein the second air cleaner comprising:
one or more cleaner modules, each of the one or more cleaner modules mounted within a frame, the frame being a four sided parallelogram with a right angle;
an electrical connector mounted on each of the one or more cleaner modules, the electrical connector to connect the second air cleaner to power and to a control,
each of the one or more cleaner modules includes four cells,
the one or more cleaner modules consisting of one to six, eight, or twelve cleaner modules,
the electrical connector including at least three wiring connections,
the at least three wiring connections having a first and a second wiring location on opposing ends relative to each other, the first and second wiring locations configured to serially connect one of the one or more cleaner modules to another cleaner module, and
a third wiring location being on a side that is the same as one of the first or second wiring locations and at an opposite end from the one of the first or second wiring location, and the third wiring location located on a different side than the other of the first or second wiring location, the third wiring location configured to allow rotation of the module and to serially connect the one of the one or more cleaner modules to another cleaner module, and
the second air cleaner being housed in a ducted system and within the air flow path.

14. The system of claim 13 , wherein each frame being a dimension of at or about 11⅜ in×23⅜ in×1¾ in, at or about 19⅜ in×19⅜ in×1¾ in, at or about 19⅜ in×23⅜ in ×1¾ in, or at or about 23⅜ in×23⅜ in×1¾ in.

15. An air cleaning apparatus, comprising:
one or more cleaner modules, each of the one or more cl

Assignees

• Trane Int Inc

Inventors

• Wenger Scott
• Polyzois Christos Alkiviadis
• Lewis Michael D

Classifications

• Y02B30/70

  Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating · CPC title

• B01D53/346 Primary

  Controlling the process · CPC title

• F24F3/044

  Systems in which all treatment is given in the central station, i.e. all-air systems · CPC title

• B60H1/00364

  for caravans or trailers · CPC title

• B60H1/00371

  for vehicles carrying large numbers of passengers, e.g. buses · CPC title