Temperature control system in cab

Abstract

The invention relates to a temperature control system in a cab. The temperature control system in the cab can enable indoor air to be heated in advance and an engine to be preheated in a cold environment. The temperature control system comprises a control circuit board and a heater preheating system. The heater preheating system comprises a heater (4), a three-way solenoid valve (5) and a three-way water pipe (7). A water inlet of the heater (4) is connected with a water outlet of a cooling module (2). A water outlet of the heater (4) is connected with a water inlet of the three-way solenoid valve (5), and two water outlets of the three-way solenoid valve (5) are connected with a water inlet of a warm water valve (8) and one water inlet of the three-way water pipe (7) respectively. A water outlet of a warm air blower (6) is connected with the other water inlet of the three-way water pipe (7), and a water outlet of the three-way water pipe (7) is connected with a water inlet of a thermostat (3). The control circuit board controls the working modes of the heater preheating system and the working modes of an air conditioning system to achieve starting of the engine in a low-temperature environment and temperature regulating of the cab.

Description

technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a temperature adjustment system in a cab. Background technique [0002] In order to enable the drivers and occupants of the car to adapt to the living conditions of the operators and to start the engine normally in the high heat, high humidity and high cold environment in the range of -41°C to 50°C, the existing vehicles mainly have the following traditional control methods, natural ventilation mode, air-conditioning control mode and the way of adding indoor heating devices. Air-conditioning control methods include manual and electric operation. For vehicles in alpine regions, the way of installing indoor heating devices is usually adopted. At the same time, the existing control method and the low-temperature starting system of the engine are only suitable for the low-temperature environment of -35 degrees, which cannot meet the requirements of the high-cold enviro...

AI Technical Summary

Problems solved by technology

At the same time, the existing control method and the low-temperature starting system of the engine are only suitable for the low-temperature environment of -35 degrees, which cannot meet the requirements of the high-cold environment of -41 degrees.

[0003] The above traditional indoor environment control methods have certain limitations:

If an indoor heating device is installed, which is independent of the air conditioning system, additional indoor space will be occupied, and the user needs to use different operation panels to achieve the purpose of indoor temperature control, resulting in complicated user control and increased manufacturing costs.

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