Refrigeration device for trailer
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Solution Overview
Problem
The existing trailer refrigerating apparatus faces challenges in maintaining strength and airtightness in the transverse direction at the attachment portion where the casing and trailer opening are connected, particularly when the vehicle rounds a curve, leading to potential cool air leakage and structural complexity.
Innovation Solution
The solution involves forming grooves and raised portions in the trailer and casing to enhance attachment strength and sealing, with vertically or horizontally extending grooves and raised portions that fit together to improve transverse and longitudinal strength and prevent cool air leakage, using sealing members to further reduce leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple attachment structure is used to connect the casing and trailer opening, then the device complexity is reduced, but the strength in the transverse direction deteriorates
Solution Approach 1:
The patent introduces a groove-raised portion structure that extends in the transverse direction (width direction of the trailer). The groove is formed in one component (casing or trailer) and the raised portion in the other, creating an interlocking feature that resists transverse forces. This dimensional approach (adding transverse extending features) strengthens the attachment without requiring complex multi-component systems.
2Strength
If the attachment structure is strengthened in the transverse direction, then the strength is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple functions into the groove-raised portion structure: it provides transverse strength reinforcement, creates sealing surfaces for preventing cool air leakage, and serves as an integrated attachment feature. By merging these functions into a single structural element rather than using separate components, the strength is improved without proportionally increasing device complexity.
Solution Approach 2:
The groove-raised portion structure serves multiple purposes simultaneously: it strengthens the transverse attachment, provides sealing surfaces when combined with sealing members, and creates a rigid connection between casing and trailer. This multi-functionality allows a single feature to address multiple requirements without adding separate systems.
3Reliability
If sealing members are added to prevent cool air leakage, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The groove-raised portion structure itself provides sealing surfaces that work in conjunction with sealing members. The geometry of the groove and raised portion creates natural sealing contact areas, and the sealing members are positioned within this pre-configured structure. This self-service approach means the structural features contribute to sealing without requiring entirely separate sealing systems.
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
This configuration simplifies the attachment structure, enhances strength in the transverse direction, reduces cool air leakage, and improves energy efficiency by maintaining the refrigerated environment within the trailer.
Implementation Method 1
the groove (61) is formed in one of the trailer (11) or the casing (31) and the raised portion (62) is formed in the other one of the trailer (11) or the casing (31). Thus, the raised portion (62) is fitted into the groove (61) with the trailer (11) being attached to the casing (31)
Implementation Method 2
the sealing member (63) is provided between the groove (61) and the raised portion (62). The sealing member (63) seals a clearance between the side edge portion (14a), the upper edge portion (17), or the lower edge portion (18) of the opening (14) of the trailer (11) and the casing (31)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
In an attachment portion (60) where a side edge portion (14a) of an opening (14) of a trailer (11) and a casing (31) are connected together, a vertically-extending groove (61) is formed in one of the trailer (11) or the casing (31) and a vertically-extending raised portion (62) is formed in the other one of the trailer (11) or the casing (31) so as to be fitted into the groove (61).