CN201875893U - Heat exchange device of condensing gas water heater - Google Patents

Abstract

A condensing gas water heater heat exchange device, which includes a sensible heat exchanger, a flue gas collection device, a condensation heat exchanger, a condenser water box, a condenser water box flue gas inlet, a condenser water box flue gas The exhaust port, the flue gas inlet of the flue gas collection device is connected to the top of the sensible heat exchanger, the flue gas outlet is connected to the condensate water receiving box, and the flue gas discharge port of the condenser water receiving box is located on the top of the condensing heat exchanger , the flue gas inlet of the condenser water box is located on the top or one side of the condenser water box, which is characterized in that the top of the condenser water box is provided with a baffle, and the baffle is located at the condenser water Between the flue gas inlet of the condenser water box and the flue gas discharge port of the condenser water box, the lower end of the baffle is lower than the lower end of the condenser water box flue gas inlet, which can effectively make the water heater Stop working to avoid damaging the water heater.

Description

Condensing gas water heater heat exchange device

Technical field: The present invention relates to a heat exchange device for a condensing gas water heater, which is suitable for a condensing gas water heater and a condensing gas heating water heater.

Background technology: Condensing gas water heaters in the prior art generally perform two heat exchanges through two sets of heat exchange systems, making full use of the latent heat in the high-temperature flue gas to reduce the temperature of the flue gas and improve the thermal efficiency of the water heater. The high-temperature flue gas produced by combustion will produce condensed water after secondary heat exchange. The ordinary condensing gas water heater is equipped with a water receiving box on the primary heat exchanger to collect condensed water, but the ordinary condensing gas water When the discharge is not smooth, the water heater is still in working condition, so the condensed water will overflow the condensed water receiving box and flow to the primary heat exchanger and burner. These are major hidden dangers of damaging the internal components of the water heater. In order to overcome these defects, a heat exchange device for a condensing gas water heater has been developed.

Summary of the invention: The technical problem to be solved by this utility model is to provide a heat exchange device for condensing gas water heaters, which can effectively prevent the phenomenon of condensed water overflowing the water receiving box caused by poor discharge of condensed water, and avoid the impact of condensed water on the water heater. Damage to internal components.

The technical solution adopted by the present invention to solve the technical problem is: it includes a sensible heat exchanger, a flue gas collection device, a condensation heat exchanger, a condenser water box, a condenser water box flue gas inlet, and a condenser water box The flue gas discharge port, the condensing heat exchanger and the condenser water box are located above the sensible heat exchanger, the condensing heat exchanger is located above the inside of the condenser water box, the flue gas inlet of the flue gas collection device is connected to the sensible heat exchanger The flue gas outlet of the flue gas collecting device is connected with the flue gas inlet of the condensed water receiving box. Between the flue gas outlet of the water box and the flue gas inlet of the condenser water box, the lower end of the baffle is lower than the lower end of the condenser water box flue gas inlet.

The baffle divides the condensing heat exchanger into two parts, the left and the right.

The flue gas discharge port of the condenser water receiving box is located on the top of the condensing heat exchanger.

The flue gas inlet of the condenser water receiving box is located on the top or one side of the condenser water receiving box.

The condensing heat exchanger is composed of more than two metal bellows.

The metal bellows are stainless steel bellows.

Compared with the background technology, the present invention has the beneficial effects: because the utility model is provided with a baffle on the top of the condensed water receiving box, and the lower end of the baffle is lower than the lower end of the flue gas inlet of the condenser water receiving box, so it can The water heater is stopped before the condensed water overflows the water receiving box, effectively solving the problem of damaging the internal components of the water heater caused by the condensed water overflowing the water receiving box.

BRIEF DESCRIPTION OF THE DRAWINGS: Figure 1 is a schematic structural view of the utility model.

Figure 2 is an exploded view of the utility model.

Fig. 3 is an exploded view of the flue gas collecting device 2, the condensing heat exchanger 3, the flue gas inlet 5 of the condenser water box, the baffle plate 7, and the metal bellows 9 in Fig. 2 .

Specific implementation: Referring to accompanying drawings 1, 2 and 3, this embodiment includes a sensible heat exchanger 1, a flue gas collection device 2, a condensation heat exchanger 3, a condenser water receiving box 4, a condensation The flue gas inlet 5 of the condenser water box, the flue gas discharge port 6 of the condenser water box, the condensing heat exchanger 3 and the condenser water box 4 are located above the sensible heat exchanger 1, and the condensing heat exchanger 3 is located at the condenser Above the interior of the water box 4, the condensed water discharge port 8 is at the bottom of the condenser water box 4 side, the flue gas inlet of the flue gas collection device 2 is connected to the top of the sensible heat exchanger 1, and its flue gas outlet is connected to the condenser The flue gas inlet 5 of the water receiving box is connected, and the baffle 7 is located between the flue gas outlet 6 of the condenser water receiving box and the flue gas inlet 5 of the condenser water receiving box, and is fixed to the condenser water receiving box by welding, riveting or screws 4, the condenser water box flue gas inlet 5 is located on the top or one side of the condenser water box 4 (the right part shown in Figure 1), and the condenser water box flue gas outlet 6 is located On the top of the heat exchanger 3, the lower end of the baffle 7 is lower than the lower end of the flue gas inlet 5. When the baffle 7 divides the condensing heat exchanger 3 into two parts, the flue gas enters from the condenser water box flue gas inlet 5 The condenser water box 4 bypasses the baffle plate 7 and finally discharges through the condenser water box flue gas discharge port 6. Since the flue gas passes through two equal condensing heat exchangers for heat exchange, the heat exchange area reaches the maximum , resulting in the highest heat transfer efficiency.

The condensing heat exchanger 3 is composed of more than two stainless steel bellows 9, and one stainless steel bellows 9 is composed of a water inlet pipe and a water outlet pipe. There are 6 stainless steel bellows 9 in this embodiment, and the stainless steel bellows 9 can effectively prevent acid Condensed water corrodes the heat exchanger material and improves service life; more than two stainless steel bellows 9 can improve heat exchange efficiency and reduce condenser volume.

The implementation process of Figure 1: when the water heater is working normally, the high-temperature flue gas first passes through the sensible heat exchanger 1 and then the temperature drops to about 150°C, then passes through the flue gas collection device 2 and enters from the flue gas inlet 5 of the condenser water box Condenser water box 4, after heat exchange with condensing heat exchanger 3, the temperature drops below 90°C, condensed water is generated on the contact surface with condensing heat exchanger 3, and the flue gas flows from the condenser water box flue gas discharge port 6 The condensed water is collected by the condenser water receiving box 4 and then discharged from the condensed water discharge port 8.

During the whole working process, the condensed water formed after cooling down is in the condenser water receiving box 4. Since the high temperature flue gas enters the condenser water receiving box 4 through the flue gas collecting device 2, the high temperature flue gas does not directly contact with the condensing water box 4. The cold wall of the water receiving box contacts to generate condensed water, so as to prevent the generated condensed water from dripping onto the sensible heat exchanger 1, thereby affecting the normal operation of the water heater.

When the condensed water discharge port 8 is blocked, the water level of the condensed water continues to rise. Since the lower end of the flue gas inlet 5 of the condenser water box is higher than the lower end of the baffle 7, when the condensed water rises to the lower end of the baffle 7, At this time, because the flue gas cannot be discharged, the water heater is forced to stop working, so that no more condensed water will be generated, so that the condensed water will not flow into the flue gas collection device 2 and the sensible heat exchanger 1 from the flue gas inlet 5, so as to prevent the condensed water from overflowing. The water box corrodes the sensible heat exchanger 1.

Claims (9)

1. A condensing gas water heater heat exchange device, which comprises a sensible heat exchanger (1), a flue gas collection device (2), a condensation heat exchanger (3), a condenser water box (4), a condenser The flue gas inlet of the water receiving box (5), the flue gas discharge port of the condenser water receiving box (6), the condensing heat exchanger (3) and the condenser water receiving box (4) are located above the sensible heat exchanger (1), The condensing heat exchanger (3) is located above the inside of the condenser water box (4), the flue gas inlet of the flue gas collection device (2) is connected with the sensible heat exchanger (1), and the flue gas collection device (2) The flue gas outlet communicates with the flue gas inlet (5) of the condensed water receiving box, and is characterized in that a baffle (7) is provided on the top of the condenser water receiving box (4), and the baffle (7) Located between the condenser water box flue gas outlet (6) and the condenser water box flue gas inlet (5), the lower end of the baffle (7) is lower than the condenser water box flue gas inlet (5) ) at the lower end. 2. The heat exchange device for a condensing gas water heater according to claim 1, characterized in that the baffle (7) divides the condensing heat exchanger (3) into two parts, the left and the right. 3. The heat exchange device for a condensing gas water heater according to claim 1 or 2, characterized in that the flue gas discharge port (6) of the condenser water receiving box is located on the top of the condensing heat exchanger (3). 4. The heat exchange device for a condensing gas water heater according to claim 3, characterized in that the flue gas inlet (5) of the condenser water receiving box is located at the upper part of one side of the condenser water receiving box (4). 5. The heat exchange device for a condensing gas water heater according to claim 3, characterized in that the flue gas inlet (5) of the condenser water receiving box is located on the top of the condenser water receiving box (4). 6. The heat exchange device for a condensing gas water heater according to claim 4, characterized in that the condensing heat exchanger (3) is composed of more than two metal bellows (9). 7. The heat exchange device for a condensing gas water heater according to claim 5, characterized in that the condensing heat exchanger (3) is composed of more than two metal bellows (9). 8. The heat exchange device for a condensing gas water heater according to claim 6, characterized in that the metal bellows (9) are stainless steel bellows. 9. The heat exchange device for a condensing gas water heater according to claim 7, characterized in that the metal bellows (9) are stainless steel bellows.

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