Hot water circulation device without return difference temperature setting

Abstract

The invention discloses a hot water circulation device without return difference temperature setting. The hot water circulation device comprises a circulation pipeline, a circulation water pump, a temperature sensor and a controller, wherein the circulation water pump and the temperature sensor are mounted on the circulation pipeline, and the controller is connected with the circulation water pump and the temperature sensor. The hot water circulation device is characterized in that the hot water circulation device further comprises an environment temperature sensor; the environment temperature sensor is connected with the controller; and the controller determines the interval of two times of starting of the circulation water pump through signals fed back by the environment temperature sensor without setting the return difference temperature in the traditional technology, and the problem that the water temperature in pipelines is low and water pumps cannot be started due to the slow temperature dropping rate of temperature sensors in devices is solved. Meanwhile, due to the fact that return difference temperature setting is omitted, the study cost of users is lowered, and the users do not need to frequently adjust the return difference temperature according to the temperature change.

Description

technical field [0001] The invention relates to the technical field of hot water circulation control, in particular to a hot water circulation device which does not need to set a return difference temperature. Background technique [0002] Most of the existing hot water circulation devices on the market have a reservation function, when T0<Tset-Ttime is satisfied within the reservation time period (T0 is the real-time temperature, T is the set temperature, and Ttime is the hysteresis temperature) , the hot water circulation device starts to work to heat the water in the pipeline. This method of using temperature as a judgment condition has the following technical problems: [0003] 1) The heat dissipation rate of the pipeline is related to the ambient temperature. However, the temperature probe is generally inside the circulation device, and the internal insulation effect of the device is good. As a result, the water in the pipe is already very cold and the device has not...

AI Technical Summary

Problems solved by technology

[0003] 1) The heat dissipation rate of the pipeline is related to the ambient temperature. However, the temperature probe is generally inside the circulation device, and the internal insulation effect of the device is good. As a result, the water in the pipe is already very cold and the device has not started, resulting in a poor user experience.

[0004] 2) Users need to artificially set different hysteresis temperatures according to seasonal changes, and need to understand the definition of hysteresis temperature, which will bring unnecessary troubles to users

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