CN-122008786-A - Air conditioning system of double-steel-wheel road roller and control method thereof

CN122008786ACN 122008786 ACN122008786 ACN 122008786ACN-122008786-A

Abstract

The invention discloses an air conditioning system of a double-steel-wheel road roller and a control method thereof, wherein the system comprises an air conditioning module, a refrigerating circulation loop is formed by an evaporator, a compressor, a condenser and an expansion valve and is used for refrigerating a cab of the double-steel-wheel road roller, the waterway system comprises a water tank, a water pump and a sprinkler, the sprinkler is arranged on the air inlet side of the condenser of the air conditioning module and is used for spraying water mist to the surface of a condenser fin, and the control system comprises a controller, a cab temperature sensor, an asphalt temperature sensor and a control switching device.

Inventors

LI BEI
Zhu Shanggui
WANG JINPENG
LIU FAN
CHE LUKUAN

Assignees

徐工集团工程机械股份有限公司道路机械分公司

Dates

Publication Date: 20260512
Application Date: 20260205

Claims (10)

1. An air conditioning system of a double-steel-wheel road roller is characterized by comprising an air conditioning module, a waterway system and a control system; The air conditioning module forms a refrigeration circulation loop through an evaporator, a compressor, a condenser and an expansion valve and is used for refrigerating a cab of the double-steel-wheel road roller; The water path system comprises a water tank, a water pump and a water spray nozzle, wherein the water spray nozzle is arranged on the air inlet side of a condenser of the air conditioning module and is used for spraying water mist to the surface of a fin of the condenser; the control system comprises a controller, a cab temperature sensor, an asphalt temperature sensor and a control switching device.
2. The dual steel wheel road roller air conditioning system of claim 1, wherein the cab temperature sensor is configured to monitor cab temperature, the asphalt temperature sensor is configured to monitor asphalt road surface radiation temperature or ambient temperature of an environment in which the road roller is located, and the controller is configured to issue commands to control a water pump and a sprinkler head of the waterway system.
3. The dual steel wheel road roller air conditioning system of claim 1, wherein the control system switches the operating modes according to an operator by manipulating the switching device, the operating modes including a manual mode and an automatic mode.
4. The dual steel wheel road roller air conditioning system of claim 3, wherein the manual mode is specifically that an operator manually controls the start and stop of a water pump and a sprinkler head of the waterway system and the water spraying time through a controller.
5. The air conditioning system of the double steel wheel road roller according to claim 3, wherein the automatic mode is specifically that a controller automatically adjusts the start-stop and water spraying time of a water pump and a water spraying nozzle of a waterway system according to a preset control logic according to real-time signals fed back by a cab temperature sensor and an asphalt temperature sensor.
6. The dual steel wheel roller air conditioning system of claim 5, wherein the control logic is specifically: ; Wherein, the In the working state of the water pump, 0 represents no work, and 1 represents work; the temperature fed back by the asphalt temperature sensor; The temperature fed back by the temperature sensor for the driving cab; Is a low-temperature threshold value, and the temperature of the alloy is higher than the low-temperature threshold value, Is a high temperature threshold and ; Is the cab temperature threshold.
7. The dual steel wheel road roller air conditioning system of claim 1, wherein the waterway system receives instructions from a controller of the control system, controls the water pump to pump water from the water tank, and sprays the water onto the condenser through the sprinkler head.
8. The air conditioning system of a dual steel wheel road roller of claim 1, wherein the water tank and the water pump of the waterway system use a water storage tank and a water sprinkling pump of the dual steel wheel road roller.
9. The dual steel wheel road roller air conditioning system of claim 1, further comprising a recovery module for recovering condensate water generated when the air conditioning module is cooled and injecting the condensate water into the water tank of the waterway system.
10. A control method of an air conditioning system of a double steel wheel road roller according to any one of claims 1 to 9, comprising: the air conditioning system starts to work, and the control system is switched to a manual mode or an automatic mode according to instructions of operators; when the automatic mode is switched into, the controller automatically adjusts the start-stop and water-spraying time of the water pump and the water-spraying nozzle of the waterway system according to real-time signals fed back by the cab temperature sensor and the asphalt temperature sensor and preset control logic; The waterway system controls the water pump to pump out water of the water tank according to the instruction of the controller, and sprays the water on the condenser through the sprinkler; The recovery module recovers condensed water generated during refrigeration of the air conditioning module and injects the condensed water into a water tank of the waterway system.

Description

Air conditioning system of double-steel-wheel road roller and control method thereof Technical Field The invention belongs to the technical field of engineering machinery, and particularly relates to an air conditioning system of a double-steel-wheel road roller and a control method thereof. Background In asphalt pavement construction, the compaction temperature of the asphalt mixture needs to be strictly controlled between 100 ℃ and 140 ℃, which is the key for ensuring the pavement compaction quality and long-term durability. The double steel wheel roller is used as core compacting equipment and must work continuously for a long time in the high temperature environment. An air conditioning system in a cab is important for guaranteeing comfort, health and construction concentration of operators. However, in the existing air conditioning system with the double steel wheels, the condenser is usually arranged in the equipment, the heat dissipation environment is bad, especially asphalt radiant heat is superimposed in hot summer, the environment temperature is far beyond the normal design working condition, and the condensation pressure of the air conditioning system is too high, the refrigeration efficiency is drastically reduced and even fails. Only by improving the performance of the components of the air conditioning system (such as increasing the power of a compressor, the area of a condenser and the like), the urgent requirement of cooling a cab in actual construction is difficult to meet, and the problem of restricting the applicability of equipment and the industry commonality of operator experience is solved. Therefore, an innovative solution capable of effectively improving the working environment of an air conditioning system and improving the high-temperature adaptability of the air conditioning system is urgently needed. Disclosure of Invention The invention aims to provide an air conditioning system of a double-steel-wheel road roller and a control method thereof, wherein the air conditioning system can improve the refrigerating performance of the air conditioner. The air conditioning system of the double-steel-wheel road roller comprises an air conditioning module, a waterway system and a control system; The air conditioning module forms a refrigeration circulation loop through an evaporator, a compressor, a condenser and an expansion valve and is used for refrigerating a cab of the double-steel-wheel road roller; The water path system comprises a water tank, a water pump and a water spray nozzle, wherein the water spray nozzle is arranged on the air inlet side of a condenser of the air conditioning module and is used for spraying water mist to the surface of a fin of the condenser; the control system comprises a controller, a cab temperature sensor, an asphalt temperature sensor and a control switching device. Further, the cab temperature sensor is used for monitoring the temperature in the cab, the asphalt temperature sensor is used for monitoring the radiation temperature or the environmental temperature of the asphalt pavement in the environment where the road roller is located, and the controller is used for giving an instruction to control the water pump and the sprinkler head of the waterway system. Further, the control system switches working modes according to the operation of an operator through controlling the switching device, wherein the working modes comprise a manual mode and an automatic mode. Further, the manual mode is specifically that an operator manually controls the start-stop and water spraying time of a water pump and a water spraying nozzle of the waterway system through a controller. Further, the automatic mode is specifically that the controller automatically adjusts the start-stop time and the water spraying time of the water pump and the sprinkler head of the waterway system according to a preset control logic according to real-time signals fed back by the cab temperature sensor and the asphalt temperature sensor. Further, the control logic specifically includes: ; Wherein, the In the working state of the water pump, 0 represents no work, and 1 represents work; the temperature fed back by the asphalt temperature sensor; The temperature fed back by the temperature sensor for the driving cab; Is a low-temperature threshold value, and the temperature of the alloy is higher than the low-temperature threshold value, Is a high temperature threshold and;Is the cab temperature threshold. Further, the waterway system receives an instruction of a controller of the control system, controls the water pump to pump out water of the water tank, and sprays the water on the condenser through the sprinkler head. Further, the water tank and the water pump of the waterway system use a water storage tank and a water sprinkling pump which are self-contained by the double-steel-wheel road roller. Further, the air conditioner further comprises a recovery module for recovering condensed wa