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Cab air conditioning system, control method thereof and engineering machinery

A technology of an air conditioning system and a control method, which is applied to air handling equipment, heating/cooling equipment, vehicle components, etc., and can solve problems such as low heating efficiency and low utilization rate of cab heating energy, so as to improve heating efficiency and energy The effect of utilization efficiency

Pending Publication Date: 2022-05-06
SANY HEAVY MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects of low cab heating energy utilization rate and low heating efficiency in the prior art, thereby providing a control method for the cab air conditioning system

Method used

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  • Cab air conditioning system, control method thereof and engineering machinery
  • Cab air conditioning system, control method thereof and engineering machinery
  • Cab air conditioning system, control method thereof and engineering machinery

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Embodiment Construction

[0024] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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Abstract

The invention provides a cab air conditioning system, a control method thereof and engineering machinery, the air conditioning system comprises a heat pump heating system, a waste heat recovery system and an electric heating system, and the control method comprises the following steps: S1, setting a preset temperature; s2, controlling an electric heating system to be turned on or turned off according to the difference value between the temperature in the cab and the preset temperature; and / or the heat pump heating system is controlled to be turned on or turned off according to the external environment temperature; and / or, the waste heat recovery system is controlled to be started or stopped according to the temperature of the cooling medium, so that the temperature in the cab reaches the preset temperature. According to the control method, the heat pump heating system, the waste heat recovery system and the electric heating system are combined according to the external temperature and the condition of the heating medium, reasonable heat management is carried out while the heat requirement of the cab can be met, the energy utilization efficiency is further improved, and the heating efficiency of the cab is improved.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a cab air-conditioning system, a control method thereof, and construction machinery. Background technique [0002] In areas in China that are suitable for winter excavation operations, the ambient temperature is generally artificially set at -12°C. According to the requirement that the comfortable temperature suitable for personnel work is 16-25°C, it is necessary to consider not only the comfort of personnel, but also the operating power consumption of the whole machine. According to the CE standard, it is required that the temperature in the cockpit can be raised and maintained above 18°C ​​in a cold environment, and the heating system should have the heating capacity of at least 25°C within 30 minutes. PTC heaters are usually used for heating the cockpit of traditional fuel excavators, but PTC consumes a lot of energy, and the electrical energy consumed cannot ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60H1/00B60H1/22
CPCB60H1/00357B60H1/22B60H1/2215B60H1/00735B60H1/00878
Inventor 许力沙丽丽
Owner SANY HEAVY MACHINERY
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