Light-duty Series

Overview

The Light-duty Series (KL-D-N) is a ductless recirculating purifier developed for commercial sites that have no exhaust duct. Instead of an external flue, cooking fumes pass through a six-stage filtration train inside the cabinet – mechanical filtration, activated carbon and UV photolysis – and the cleaned air is returned to the room. Smoke and odour are handled in the same pass.

The range covers three body lengths – 1200 mm, 1600 mm and 2000 mm – all built with a stainless-steel housing, a touch-screen control panel and a 350 mm multi-blade silent impeller, running on a standard 220 V supply. It is built for mall islands, shop-in-shop units, B1 basement levels and other positions where a flue is not available, so a hot-food concept can open where it otherwise could not.

How the Purification Works

Six Filtration Layers, Nine Stages

From the cooking source to clean air, the airstream is treated layer by layer inside the cabinet: intercept first, filter next, deodorise last.

1. Capture Zone: draws grease particles into the unit.
2. Plume Gathering Zone: converges the airflow so it spreads evenly across the filter face.
3. Metal Physical Interception: traps large grease and steam particles.
4. Bubble Metal Filter Mesh: captures oil droplets of 5 microns and above.
5. Medium-Efficiency Filtration: removes more than 95% of grease particulate.
6. High-Efficiency Filtration Layer: removes 99% of particulate.
7. Honeycomb Activated Carbon: columnar carbon adsorbs and locks in odour molecules.
8. UV Photolysis: breaks down odour molecules and reduces VOCs.
9. Centrifugal Fan: returns clean air to the room, completing the recirculation loop.

Bubble Metal Filter Mesh – Two Mechanisms

Physical interception: the porous metal structure forms a large number of micro channels; anything larger than the pore size is held on the mesh surface or inside the pores.

Adsorption: fine particles are held on the pore walls by intermolecular force (van der Waals force) and separated from the airstream.

The mesh can be removed, washed with water and reused, which keeps long-term consumable cost down.

350 mm Multi-Blade Silent Impeller

An aerodynamic profile draws air evenly, with strict dynamic and static balancing correction for high static pressure and stable running. Developed for harsh grease-exhaust duty, it is moisture-proof, oil-proof, heat-resistant and fully enclosed.

Touch-Screen Control Panel

The panel shows front and rear temperature, service life of filter cartridge I and II, time and remaining cleaning time, and controls six functions: fan, purifier, lighting, water pump, cleaning and water level. Nine-speed variable-frequency adjustment cuts energy use by more than 40% overall, and the control board supports RS-485, PLC interlocking, an IoT port and external remote control.

Key Features

• Smoke and odour together, 99% or better: grease particulate and odour molecules are treated in the same pass, so the counter stays clear and the shop stays free of cooking smell.
• Ductless recirculation – open without a flue: no external ducting, no wall coring and no damage to the fit-out; mall positions without a flue can go ahead directly.
• Touch-screen control, nine speeds, over 40% energy saving: speed is matched to the actual smoke load, balancing purification against power use.
• Quiet running for open counters: the 350 mm multi-blade impeller stays quiet at low speed, suited to open display counters.
• 220 V mains supply, plug and run: no 380 V three-phase rewire – malls, food stalls and street shops can use it directly.
• Stainless-steel body, modular maintenance: filter elements can be removed for washing or replacement, and the finish suits an open counter on display.

Application Scenarios

• Mall Islands and Multi-Tenancy Points: open-format atrium and corridor positions with no exhaust route.
• B1 Basement Units: basement-level food units where no external duct can be run.
• Shop-in-shop Units: small food counters and light-meal zones inside supermarkets and mixed-use complexes.
• Open Display Counters: front-of-house preparation counters and snack display areas.
• Metro Retail Points: in-station food counters where recirculation keeps the public environment unaffected.
• Convenience-Store Light-Meal Corners: steamed-bun holding and light-meal heating areas in convenience stores and coffee shops.

Suitable Food Formats

• Oden and Holding Counters: simmered light-smoke formats served at a constant temperature.
• Fresh-Cooked Marinated Dishes: cooked and served on the spot, with odour handled at the same time.
• Takoyaki: light griddle frying, prepared in front of customers.
• Pancakes and Hand-Pulled Pastry: gridded dough items, fast service and light smoke.
• Steamed Buns and Dim Sum: steam heating with moisture handling.
• Light-Meal and Mixed Counters: several formats combined, handled by one unit.

Problems It Solves

• No flue at the site: mall islands, shop-in-shop units and B1 levels have no exhaust shaft, so hot-food concepts cannot open. Ductless internal recirculation lets the site open directly.
• Smoke and odour complaints: fumes and smell escaping draw repeated complaints from neighbouring shops and customers. Six-stage purification with carbon and UV deodorising lowers that risk.
• Property approval: without a fume-handling solution, mall management will not approve the fit-out. The unit is built to commercial kitchen fume-control requirements and can be submitted to property management as the fume-handling proposal for a ductless site.
• Ductwork cost: laying ducts, coring external walls and installing fans is expensive and slow. This unit needs no modification and no coring – plug it in and run.
• Poor working conditions at the counter: smoke filling the stall makes it unpleasant for staff and leaves the shop smelling. Fumes are purified on the spot, so open-counter work is not choking.
• Menu and site limits: popular formats get ruled out by exhaust conditions. With one unit covering several formats, both menu and site choice open up.

Specifications

Model Range

Selection guide: KL-D-N12 suits small holding counters and oden stalls; KL-D-N16 suits takoyaki, pancake and fresh-cooked marinated counters as the main unit; KL-D-N20 suits mall islands and mixed-format open counters. Modular assembly and custom lengths are supported; the shipped configuration of each unit is final.

Reference Setups

The configurations below show how the range is typically matched to a site. Customer names and site details are anonymised.

• B1 basement oden counter: KL-D-N12, installed in a basement unit with no flue; went through property review, with no noticeable cooking smell at the counter.
• Shop-in-shop takoyaki counter: KL-D-N16, placed as an open display counter; the stainless-steel body matches the store fit-out.
• Metro retail light-meal counter: KL-D-N20, running several formats together; indoor recirculation leaves the station’s public environment unaffected.
• Convenience-store coffee and light-meal area: KL-D-N12, paired with steamed-bun and holding counters, with no external duct and no odour in store.