A low-temperature antifreeze water-cooled motor pump unit and a high-pressure cleaner

Abstract

The invention discloses a low-temperature-resistant anti-freezing water-cooled motor pump unit and a high-pressure cleaning machine. The low-temperature-resistant anti-freezing water-cooled motor pumpunit comprises a pump having a pump water inlet and a pump water outlet and a water-cooled motor provided with an iron core and a case in contact with the iron core. A water-cooling chamber I is formed in the case and has a water inlet and a water outlet; and the water outlet is connected with the pump water inlet. The low-temperature-resistant anti-freezing water-cooled motor pump unit is characterized in that at least one elastomer I is arranged in the water-cooling chamber I; and after being extruded, the size of the elastomer I is changed and thus recoverable elastic contraction is caused. The low-temperature-resistant anti-freezing water-cooled motor pump unit and the high-pressure cleaning machine have the following beneficial effects: on the basis of elastic contraction of the elastomer in the water-cooling chamber, volume expansion after the water freezing is compensated, so that the low-temperature anti-freezing problem of the water-cooled motor pump unit and the high-pressure cleaning machine are solved effectively; and with the elastomer arranged at the outer surface between water-cooling ribs of the case, the surface of the case is protected from being corroded.

Description

Technical field [0001] The invention belongs to the technical field of cleaning equipment, and specifically relates to a low-temperature resistant and antifreeze water-cooled motor pump unit. Background technique [0002] The high-pressure cleaner is a kind of equipment that uses water or a mixture of cleaning agents as the cleaning medium and uses high-pressure water to clean the surface of objects. It mainly consists of a spray gun unit and a motor pump unit. The spray gun unit is responsible for generating different pressures according to actual needs. The motor pump unit is responsible for delivering water from the municipal water pipe to the spray gun unit. [0003] A motor pump usually includes a motor and a pump, and the pump can work normally under the drive of the motor to realize water delivery. As an electrical equipment, the motor generates a large amount of heat energy while converting electrical energy into mechanical energy, which increases the operating temperature...

AI Technical Summary

Problems solved by technology

[0005] At present, there is a potential hidden danger in the water-cooled motor pump unit. The water inside the used water-cooled motor pump will not be automatically discharged. When the machine encounters a low temperature environment below zero, the water in the pump will freeze and cause the motor pump to crack. , due to the large volume of high-pressure cleaners, users generally store the machines in the yard, so when the temperature is below zero in winter, the machine has the risk of freezing and cracking

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