CN202792503U - Vacuum hot water boiler with double return-stroke smoke tubes - Google Patents

Abstract

The utility model discloses a vacuum hot water boiler with double return-stroke smoke tubes. The vacuum hot water boiler comprises a boiler body, wherein a combustion chamber is arranged at the bottom of the boiler body and is connected with a combustor; a heat exchange pipe is arranged at the upper part of the boiler body; a backfire chamber is arranged at one end far from the end connected with the combustor, of the combustion chamber; a front smoke box is arranged on one side on which the combustor is arranged, of the boiler body; a rear smoke box is arranged on one side, opposite to the front smoke box, of the boiler body; the backfire chamber is communicated with the front smoke box through a front smoke tube; and the front smoke box is communicated with the rear smoke box through a rear smoke tube and is arranged in the boiler body. According to the vacuum hot water boiler, as being arranged in the boiler body, the front smoke box also participates in heat exchange with heating medium water, and thus the heat exchange efficiency of the whole hot water boiler is further improved; and simultaneously, compared with an external front smoke box, the front smoke box of the vacuum hot water boiler does not need heat insulation protection, and thus the manufacture cost of the boiler is reduced.

Description

A kind of pair of backhaul smoke pipe vacuum hot water boiler

Technical field

The utility model relates to a kind of vacuum hot water boiler, particularly relates to a kind of pair backhaul smoke pipes that utilize to carry two backhaul smoke pipe vacuum hot water boilers of heat exchange efficiency.

Background technology

Vacuum hot water boiler is exactly that inner closed chamber is by forming a vacuum chamber behind the vacuum suction, burning makes the heat medium water vaporization generation negative pressure steam that seethe with excitement in vacuum chamber, steam condenses outside heat exchanger tube, to manage the inner cold water heat temperature raising and pass to the user, the steam rear formation water droplet that condenses flows back to heat medium water, again be heated vaporization, so finish whole circulation, vacuum hot water boiler closed chamber service pressure is less than 0.7 standard atmospheric pressure.Because operating pressure is less than 0.7 standard atmospheric pressure, like this, heat medium water is vaporized into steam just coming to life less than 90 ℃, has reduced the consumption of combustion gas, has reached energy-conservation purpose.

Existing pair of backhaul smoke pipe vacuum hot water boiler generally includes body of heater, the bottom of body of heater is provided with the combustion chamber, the combustion chamber links to each other with burner on the one hand, the combustion chamber is provided with reversing chamber away from an end that links to each other with burner, body of heater is equipped with burner one side and is provided with front smoke box, be provided with rear smoke box with respect to front smoke box one side on the body of heater, reversing chamber is connected by front smoke pipe with front smoke box, and front smoke box is connected by rear smoke pipe with rear smoke box.Thereby form the smoke pipe of two backhauls, make the time of staying of high-temperature flue gas in smoke pipe longer, to improve combustion chamber and the outer wall of smoke pipe and the heat exchanger effectiveness of heat medium water.Existing pair of backhaul smoke pipe vacuum hot water boiler is fixed on front smoke box on the outer wall of body of heater usually; because flue gas also has higher temperature when passing into front smoke box through front smoke pipe; and the anti-a part of dissipation of heat of external front smoke box meeting is in air; cause the waste of heat energy; simultaneously; when extraneous personnel touch the front smoke box outer wall, be burned, also need the outer wall of front smoke box is carried out thermal insulation protection, cause the boiler cost of manufacture to rise.

The utility model content

For overcoming defects, the utility model aims to provide and a kind ofly can utilize to greatest extent smoke pipe heat energy, can reduce again two backhaul smoke pipe vacuum hot water boilers of boiler cost of manufacture simultaneously

For achieving the above object, the technical solution adopted in the utility model is: a kind of pair of backhaul smoke pipe vacuum hot water boiler, comprise body of heater, the bottom of described body of heater is provided with the combustion chamber, described combustion chamber links to each other with burner, the top of described body of heater is provided with heat exchanger tube, described combustion chamber is provided with reversing chamber away from an end that links to each other with burner, burner one side is installed on the described body of heater is provided with front smoke box, be provided with rear smoke box with respect to front smoke box one side on the described body of heater, described reversing chamber is connected by front smoke pipe with front smoke box, and described front smoke box is connected by rear smoke pipe with rear smoke box, and described front smoke box places in the body of heater.

Described front smoke box is that the boiler steel material is made.

Adopted of the present utility model pair of backhaul smoke pipe vacuum hot water boiler; because front smoke box has been placed in the body of heater; make front smoke box also participate in heat exchange with heat medium water; make the heat exchange efficiency of whole hot-water boiler obtain raising into any; simultaneously; compare with the front smoke box of external, save the thermal insulation protection to front smoke box, make the cost of manufacture of boiler obtain descending.

Description of drawings

Fig. 1 is structural representation of the present utility model.

Among the figure: 1-body of heater, 2-combustion chamber, 3-heat exchanger tube, smoke pipe before the smoke pipe behind the 4-, 5-, 6-burner, 7-reversing chamber, 8-front smoke box, smoke box behind the 9-.

The specific embodiment

As shown in Figure 1, the utility model discloses a kind of pair of backhaul smoke pipe vacuum hot water boiler, comprise body of heater 1, the bottom of described body of heater 1 is provided with combustion chamber 2, described combustion chamber 2 links to each other with burner 6, the top of described body of heater 1 is provided with heat exchanger tube 3, described combustion chamber 2 is provided with reversing chamber 7 away from an end that links to each other with burner 6, burner 6 one sides are installed on the described body of heater 1 are provided with front smoke box 8, be provided with rear smoke box 9 with respect to front smoke box 8 one sides on the described body of heater 1, described reversing chamber 7 is connected by front smoke pipe 5 with front smoke box 8, described front smoke box 8 is connected by rear smoke pipe 4 with rear smoke box 9, common combustion chamber 2, front smoke pipe 5 and rear smoke pipe 4 all are immersed in the heat medium water, when the flame of burner 6 ejection in the combustion chamber 2 internal combustion, combustion chamber 2 walls are heated, combustion chamber 2 outer walls and heat medium water carry out heat exchange, simultaneously, flow through in the process of front smoke pipe 5 and rear smoke pipe 4 in the tempered chamber 7 of high-temperature flue gas that burning produces, heated front smoke pipe 5 and rear smoke pipe 4 also can participate in the heat exchange to heat medium water, heat medium water is heated to boiling, the high-temperature vapour that produces carries out heat exchange with heat exchanger tube 3 again, the cool water heating that in heat exchanger tube 3, circulates, in sum, basically identical with the structure of existing pair of backhaul smoke pipe vacuum hot water boiler.

The innovative point of of the present utility model pair of backhaul smoke pipe vacuum hot water boiler is that mainly described front smoke box 8 places in the body of heater 1.Described front smoke box 8 also need be immersed in the heat medium water, like this, current smoke pipe 5 flow into half high-temperature flue gas in the front smoke box 8 front smoke box 8 heating after, the outer wall of front smoke box 8 also participates in the heat exchange with heat medium water.

Common described front smoke box 8 adopts the boiler steel material to be made, and is specially and can adopts boiler steel Q245R.

Claims (2)

1. two backhaul smoke pipe vacuum hot water boiler, comprise body of heater (1), the bottom of described body of heater (1) is provided with combustion chamber (2), described combustion chamber (2) links to each other with burner (6), the top of described body of heater (1) is provided with heat exchanger tube (3), described combustion chamber (2) is provided with reversing chamber (7) away from an end that links to each other with burner (6), burner (6) one sides are installed on the described body of heater (1) are provided with front smoke box (8), described body of heater (1) is upper to be provided with rear smoke box (9) with respect to front smoke box (8) one sides, described reversing chamber (7) is connected by front smoke pipe (5) with front smoke box (8), described front smoke box (8) is connected by rear smoke pipe (4) with rear smoke box (9), it is characterized in that described front smoke box (8) places in the body of heater (1).

2. according to claim 1 pair of backhaul smoke pipe vacuum hot water boiler is characterized in that described front smoke box (8) is made for the boiler steel material.

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