Adjustable Discharge Grill Vanes for Merchandiser Airflow
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Solution Overview
Problem
Conventional refrigerated merchandisers face challenges in evenly distributing airflow across shelves due to fixed air discharge grills, leading to inadequate temperature conditioning on middle shelves and obstructing service ergonomics with deflectors.
Innovation Solution
An adjustable airflow system featuring a discharge grill with vanes that can be angled to optimize airflow based on shelf configuration, using a vane control mechanism to direct airflow effectively across different shelf arrangements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed air discharge grills are used at the rear of the case, then the discharge grill location does not compromise product visibility and rear door usability, but the airflow cannot be evenly distributed over the shelves and middle shelves suffer from inadequate temperature conditioning
Solution Approach 1:
The discharge grill incorporates adjustable vanes that can be dynamically repositioned to different angles to optimize airflow distribution. This dynamic adjustment allows the system to adapt to different shelf configurations and product arrangements, directing conditioned air evenly across all shelves including middle shelves that previously suffered from inadequate cooling.
Solution Approach 2:
The airflow discharge parameters are changed by adjusting the vane angles to modify the direction and distribution pattern of the discharged air. By varying the discharge angle and direction parameters, the system achieves uniform temperature conditioning across different shelf levels without compromising the fixed benefits of rear door usability and product visibility.
2Quantity of substance
If deflectors are attached to the rear of the shelf to direct airflow, then mass flow distribution is improved, but service ergonomics are impeded by obstructions and additional balancing complexity is created
Solution Approach 1:
The adjustable discharge grill serves multiple functions: it conditions air for all shelf levels, adapts to different shelf configurations, and maintains clear service access. By integrating the airflow distribution function directly into the discharge grill rather than adding separate deflectors, the system achieves improved mass flow distribution without compromising service ergonomics.
Solution Approach 2:
The airflow direction control function is extracted from the concept of shelf-mounted deflectors and relocated to the discharge grill at the rear of the case. This extraction eliminates the need for obstructive deflectors in service areas while concentrating the airflow control mechanism in a location where it can effectively distribute conditioned air without impeding staff movement and product retrieval.
3Device complexity
If standard discharge grills with moiré pattern are used, then the discharge grill structure is simple, but airflow is concentrated in streams that cannot evenly distribute air over the shelves
Solution Approach 1:
While maintaining a relatively simple discharge grill structure, adjustable vanes are incorporated to enable dynamic control of airflow patterns. The vanes can be positioned at different angles to break up concentrated air streams and distribute conditioned air more uniformly across the shelves, achieving even temperature conditioning without significantly increasing structural complexity.
Solution Approach 2:
The airflow distribution is improved by changing the discharge angle parameter through adjustable vanes. This parameter adjustment transforms the concentrated moiré pattern airflow into more dispersed and evenly distributed streams that effectively condition air across all shelf levels while maintaining the simplicity of the basic grill structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures uniform airflow and temperature conditioning across all shelves, enhancing product display and service accessibility by adapting to various merchandiser configurations.
Implementation Method 1
a fan that is in communication with the air passageway and that generates an airflow through the air passageway
Implementation Method 2
refrigerated air is provided to the product display area via heat exchange in an evaporator
Data Source
AI summary
A merchandiser including a case that defines a shelf configuration and that has a base and a rear wall cooperating to at least partially define a product display area. The merchandiser also includes an air passageway that extends through base and at least partially along the rear wall, and a fan that is in communication with the air passageway and that generates an airflow through the air passageway. The merchandiser further includes a discharge grill and a vane control. The discharge grill is positioned in the air passageway and has one or more vanes with a discharge angle to direct the airflow through the case. The vane control is coupled to the one or more vanes and has a mechanism that adjusts the discharge angle of the one or more vanes to control the airflow through the merchandiser based at least in part on the shelf configuration.