CN2485579Y

CN2485579Y - Device for utilizing waste of boiler

Info

Publication number: CN2485579Y
Application number: CN 01225198
Authority: CN
Inventors: 蔡兴东
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-06-05
Filing date: 2001-06-05
Publication date: 2002-04-10
Anticipated expiration: 2011-06-05

Abstract

The utility model relates to a boiler waste heat using device which comprises a heat exchanger, a water pipe, a circulation water pump and a water storage tank, wherein the heat exchanger is connected with a flue of a boiler in series, a water outlet on the heat exchanger is connected to the upper end of the water storage tank by the water pipe, a water outlet at the lower end of the water storage tank is connected to an inlet of the circulation water pump, and an outlet of the circulation water pump is connected to a water inlet of the heat exchanger. The water storage tank, a water channel of the circulation water pump and the heat exchanger installed on the flue of the boiler are used to form a circulation loop which runs consecutively. When the boiler is not filled with water, the heat exchanger is used to consecutively heat water in the storage water tank, and the waste heat of the boiler is sufficiently used. The flue resistance of the heat exchanger is small, and the length of the flue can be increased; the heat-exchange rate is enhanced.

Description

The boiler afterheat use device

The utility model relates to energy saver, particularly the boiler afterheat use device.

The chimney of hot-water boiler can be drained a large amount of heats, causes energy waste, and people can be former for saving, and a kind of heat exchanger of series connection on the smokejack of boiler exchanges mutually by flue and water channel and to carry out exchange heat, to the pipeline of the boiler fills water channel by heat exchanger.The structure of heat exchanger is that the many water pipes vertical with flue are arranged in the flue cavity.This energy saver has following shortcoming: the one, and only at the waste heat that could utilize boiler emission when boiler adds cold water, the most of the time does not have energy-saving effect; The heat exchanger water pipe is big to flue resistance, and too many water pipe can not be set, and heat exchanger efficiency is low.

The purpose of this utility model just provides a kind of boiler afterheat use device that can circulate and have the high efficiency heat exchanger continuously.

The technical solution of the utility model is: comprise heat exchanger, water pipe, water circulating pump, water tank, heat exchanger is serially connected on the discharge flue of boiler, delivery port on the heat exchanger is connected to the upper end of water tank by water pipe, the delivery port of water tank lower end is connected with pump entrance, and this exit of pump is connected with the water inlet of heat exchanger; The delivery port of water tank also is connected to the water inlet of boiler by boiler feed pump, also have the demineralized water inlet in the upper end of water tank.

Described heat exchanger comprises cylindrical outer casing, and the uniform many axial smoke pipes excessively of portion all communicate with the common chamber at shell two ends at these two ends of crossing smoke pipe within it, and these two ends, common chamber are respectively for going out smoke inlet; With the shell vertical direction water in-out port is being arranged.

The utility model has the advantages that: utilize the water route of water tank and water circulating pump and the heat exchanger that is installed on the boiler flue to form a closed circuit of operation continuously, utilize the water heating of heat exchanger when boiler does not add water continuously, made full use of the waste heat of boiler storage tank; Heat exchanger flue resistance I is to increase its length, and rate of heat exchange improves.Therefore device is the isolated operation loop that is not connected with boiler, and whole system is worked under passive state.

Below in conjunction with drawings and Examples the utility model is done an into explanation.

Fig. 1 is a formation schematic diagram of the present utility model;

Fig. 2 is the heat converter structure schematic diagram of prior art;

Fig. 3 is the structural representation of the utility model heat exchanger.

Referring to Fig. 1, the utility model comprises heat exchanger 1, water pipe 2, water circulating pump 3, water tank 4, heat exchanger 1 is serially connected on the discharge flue 6 of boiler 5, delivery port 8 on the heat exchanger 1 is connected to the upper end of water tank 4 by water pipe, the delivery port of the lower end of water tank 4 is connected with water circulating pump 3 inlets, and its outlet is connected with the water inlet 7 of heat exchanger 1; The delivery port of water tank 4 also is connected to the water inlet 10 of boiler 5 by boiler feed pump 9, also have demineralized water inlet 11 in the upper end of water tank 4.The water route of dotted line 12 expression prior art UTILIZATION OF VESIDUAL HEAT IN among the figure.

Referring to Fig. 2, the structure of prior art heat exchanger is that the many water pipes 17 vertical with flue 16 are arranged in flue cavity 15, and the resistance of 17 pairs of flues 16 of heat exchanger water pipe is big, and too many water pipe can not be set, and heat exchanger efficiency is low.

Referring to Fig. 3, heat exchanger 1 of the present utility model comprises cylindrical outer casing 18, and the uniform many axial smoke pipes 19 excessively of portion all communicate with the common chamber 20 at shell two ends at these two ends of crossing smoke pipe within it, and these two ends, common chamber are respectively for going out smoke inlet 21; With the shell vertical direction water in-out

port

7 and 8 are being arranged.

Claims

1, a kind of boiler afterheat use device, comprise heat exchanger, water pipe, water circulating pump, water tank, heat exchanger is serially connected on the discharge flue of boiler, it is characterized in that: the delivery port on the heat exchanger is connected to the upper end of water tank by water pipe, the delivery port of water tank lower end is connected with the water circulating pump inlet, and this exit of pump is connected with the water inlet of heat exchanger; The delivery port of water tank also is connected to the water inlet of boiler by boiler feed pump, also have the demineralized water inlet in the upper end of water tank.

2, boiler afterheat use device according to claim 1, it is characterized in that: described heat exchanger comprises cylindrical outer casing, the uniform many axial smoke pipes excessively of portion all communicate with the common chamber at shell two ends at these two ends of crossing smoke pipe within it, and these two ends, common chamber are respectively for going out smoke inlet; With the shell vertical direction water in-out port is being arranged.