Control method of intelligent split-type heat pump hot water supply device

Abstract

The invention discloses an intelligent split-type heat pump hot water supply device and a control method of the intelligent split-type heat pump hot water supply device. The device comprises a first water tank and a first heat pump main machine, a second water tank and a second heat pump main machine, and a third water tank and a third heat pump main machine, wherein each of the water tanks is internally equipped with a condenser, the condenser in the first water tank is connected with the first heat pump main machine, the condenser in the second water tank is connected with the second heat pump main machine, the condenser in the third water tank is connected with the third heat pump main machine, the middle / upper part of each of the water tanks is provided with a water outlet and the lower part of each of the water tanks is provided with a water inlet, the water outlets and the water inlets of the first, second and third water tanks are connected in parallel respectively, the device also comprises a centralized controller, the upper parts of the first water tank, the second water tank and the third water tank are all provided with water temperature sensors and the water outlets of the first water tank, the second water tank and the third water tank are all equipped with electromagnetic valves, and each water temperature sensor and each electromagnetic valve are connected withthe centralized controller. The control method is characterized by utilizing the centralized controller to control the operating state of the electromagnetic valves on the water tanks, thereby guaranteeing the hydraulic equilibrium of water supply of the water tanks.

Description

technical field [0001] The invention relates to a control method of a hot water supply device, in particular to a control method of an intelligent split heat pump hot water supply device. Background technique [0002] The split heat pump uses the characteristic that the density of water changes with temperature (the density of water decreases when the temperature rises, and the density of water increases when the temperature decreases) to heat cold water through natural convection heat exchange. When using water, cold water enters from the lower part of the water tank, and hot water is squeezed out from the upper part of the water tank. [0003] When multiple sets of split heat pumps and multiple water tanks (more than or equal to three) are connected in parallel for water supply, due to factors such as pipeline length and construction quality, the replenishment speed of cold water in each water tank may be inconsistent, and the water supply speed of hot water in each water ...

AI Technical Summary

Problems solved by technology

[0003] When multiple sets of split heat pumps and multiple water tanks (more than or equal to three) are connected in parallel for water supply, due to factors such as pipeline length and construction quality, the replenishment speed of cold water in each water tank may be inconsistent, and the water supply speed of hot water in each water tank may also be different. Inconsistency, the result will lead to the situation that in the actual water supply process, some water tanks supply hot water quickly, and the hot water supply of the water tank is quickly completed, and then cold water is supplied to the outside world, resulting in an unbalanced hot water supply hydraulic power

It is difficult to debug the balance of the above problems during debugging. Even if the balance is debugged during debugging, re-unbalance may occur during actual operation.

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