Method for assessing maintainability of wall-mounted air conditioning system
An air-conditioning system and maintainability technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve prediction and distribution, fail to reflect the maintainability function relationship of air-conditioning systems, and cannot apply maintainability in the product design stage, etc. question
Active Publication Date: 2017-09-15
NANCHANG HANGKONG UNIVERSITY
View PDF6 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, there are mainly two ways to evaluate the maintainability of air conditioners at home and abroad: one is to adopt the traditional method based on the assumption that the functional relationship of parts or components obeys the series model. The estimation accuracy of the method is poor; the second is to use the on-site fault maintenance data obtained after after-sales service, and apply various statistical theories or methods to estimate. The functional relationship between its parts or components and units cannot be applied to the prediction and allocation of maintainability in the product design stage
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0143] Applying the aforementioned air-conditioning system maintainability model and implementation procedures to predict the maintainability of a certain type of wall-mounted air conditioner, the failure rate and average maintenance time data of components or parts are shown in Table 1 below.
[0144] Table 1 Parts or components failure rate and average maintenance time data of air conditioning system (time unit: working day)
[0145] System components
parts or components
lambda ij
MTTR ij
switch unit K
controller
6.26667×10 -6
3
power signal line
1.86239×10 -6
1
1.04556×10 -7
1
3.03206×10 -6
1
Environmental temperature sensor
3.39800×10 -7
1
tube temperature head
1.88850×10 -6
1
5.16233×10 -7
3
1.56833×10 -7
1
Cooling and Heating Hardware 2...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for assessing the maintainability of a wall-mounted air conditioning system. The method comprises the steps of analyzing a working principle of the air conditioning system, and building a maintenance physical model of the system; analyzing an influence mode of a switch unit to the air conditioning system, and determining all states in which the air conditioning system is possibly located; determining a transfer probability of transferring the air conditioning system to be in any of other states from one state in different influence modes of the switch unit; building a maintainability mathematic model of the air conditioning system; and establishing an assessment program. According to the method, a function relationship among parts or components of the wall-mounted air conditioning system, units and system maintainability indexes is established, so that the operation of carrying out prediction and allocation of maintainability in a design and development process of the air conditioning system becomes possible; and the method also can be used for predicting the maintainability of the air conditioning system after installation and use, so that a decision-making basis is provided for making a scientific after-sales maintenance policy.
Description
technical field [0001] The invention relates to an air-conditioning system evaluation technology, which is suitable for analyzing and evaluating the maintainability level of the wall-mounted air conditioner during the design and use process, and particularly relates to a method for evaluating the maintainability of the wall-mounted air conditioner system. Background technique [0002] The maintainability model of the air conditioner adjustment system can be applied to the demonstration, design, manufacture and use of air conditioner products, and the wall-mounted air conditioner is the most widely used type of air conditioner product. [0003] The maintainability index is the core index reflecting the quality of air conditioners. Objectively and accurately assessing the maintainability level of air conditioners has become a basic technical work for enterprises, and has also attracted widespread attention from consumers. At present, there are mainly two ways to evaluate the m...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/00
Inventor 刘卫东揭丽琳张楠熙汪怀忠陈炳松吴路路
Owner NANCHANG HANGKONG UNIVERSITY