CN2387478Y - Dry combustion preventing auxiliary heater of solar water heater - Google Patents

Abstract

The utility model relates to a heater, particularly an anti-dry burning auxiliary heater of a solar water heater. Thermostats are adopted and arranged in a thermostat sheath and the place in a non heating zone and adjacent to a heating zone by the utility model, dry burning problem is solved, the temperature of water in a water tank can be accurately measured and controlled, and the temperature of the water is not influenced by the own temperature of an electric heating tube. The utility model has the advantages of simple structure, small size, production process simplification, production cost reduction and production efficiency enhancement.

Description

Solar water heater anti-dry auxiliary heater

The utility model relates to a kind of heater, particularly a kind of solar water heater anti-dry auxiliary heater.

The solar water heater auxiliary heater is to be specifically designed to remedy solar water heater and descend in the situation that the moon, rain, snow weather can not run well, and does auxiliary heating.In auxiliary heating process, run into through regular meeting and to be heated the situation that the liquid plane is lower than heater, let alone development the dry combustion method phenomenon will take place as listening, cause Personal Risk and property loss.The applicant's application and the second generation anti-dry heater (patent No.: be that the method that adopts temperature controller and electric heating tube to be directly adjacent to designs 98218469.7) that patents, though its anti-dry effect is fine, but because temperature controller and electric heating tube lean on too closely, it is bigger to be subjected to electric heating tube self temperature effect, not accurate enough to water temperature control on the contrary, and because temperature controller near electric heating tube, also causes production cost to increase, processing technology is complicated, and production efficiency has also descended.

The purpose of this utility model just is to overcome above-mentioned defective, designs a kind of both anti-dry, correctly reflects the solar water heater anti-dry auxiliary heater of water temperature again.

The technical solution of the utility model: guard shield, temperature controller sheath, temperature controller and electric heating tube are formed, the non-heater of electric heating tube is in the temperature controller sheath, its heating wire exit passes the temperature controller sheath in guard shield, the power supply backguy is by drawing in the guard shield, and its major technique feature is the non-hot zone of the temperature controller electric heating tube that is positioned at the sheath inner bottom part, near the hot zone of electric heating tube.

Advantage of the present utility model and effect are not to be subjected to electric heating tube self temperature effect because temperature controller and electric heating tube heating position are not directly adjacent to, and be good to the water temperature perceived effect, and the control water temperature accurately and reliably; Again because the hot zone of temperature controller and electric heating tube is very close, and sensing is effective, in case the generation dry combustion method, temperature controller rapidly the perception electric heating tube rapid intensification and cut off the electricity supply; Two temperature controllers can carry out the multi-point temp protection; Production technology is simplified, and product structure is also simple, and cost reduces.

Accompanying drawing:

Fig. 1-the utility model structural principle schematic diagram.

Another structural principle schematic diagram of Fig. 2-the utility model.

Embodiment 1:

As shown in Figure 1, internal thread is connected with external screw thread on the temperature controller sheath 2 on the guard shield 1, the heating wire exit of electric heating tube 3 passes temperature controller sheath 2 and enters into guard shield 1, the power supply backguy is by drawing in the guard shield 1, the non-thermal treatment zone of electric heating tube 3 is in temperature controller sheath 2, temperature controller 4 is also in sheath 2, be positioned at the non-hot zone of the electric heating tube 3 of sheath 2 inner bottom parts, and hot zone near electric heating tube 3, its particular location is the center side by side of pressing close to the U type pipe of electric heating tube 3, two temperature controllers 4 also can be installed be positioned at the U type pipe bilateral symmetry place of electric heating tube 3, spacer 5 is positioned at the bottom of temperature controller sheath 2, and two holes are arranged on it, and the U type pipe of electric heating tube 3 passes two holes on the spacer 5, spacer 5 is fixedly welded on the inboard of temperature controller sheath 2, and give prominence to outside temperature controller sheath 2 hot zone of electric heating tube 3.Put into insulating packing in temperature controller sheath 2, the guard shield 1.

The utility model is as the auxiliary heater in the solar water heater, when the moon, rain, the work of snow sky, and the water in the electric heating tube 3 heating solar water heater water tanks, temperature controller 4 records water temperature accurately, thus the control heating; When dry combustion method took place, because temperature controller 4 is very near the hot zone of electric heating tube 3, the rapid intensification of electric heating tube 3 made and temperature controller 4 perception and cutting off the electricity supply prevents that the harm of dry combustion method from taking place.In addition, owing at bilateral symmetry place, electric heating tube 3 non-hot zone a temperature controller 4 is set respectively, these two temperature controllers 4 can be distinguished the different temperature of observing and controlling, so that protect electric heating tube 3 better, prevent dry combustion method, and the utmost point reflects water temperature exactly again.Outer rim two ends, temperature controller sheath 2 bottom are round or circular arc, are convenient to insert the water tank of solar water heater.

Embodiment 2:

As shown in Figure 2, substantially the same manner as Example 1, temperature controller sheath 2 fixedly connected flanges 6 just, the external screw thread on the flange 6 is connected with internal thread on the guard shield 1, and flange can bear certain hydraulic pressure.

Claims (5)

1. solar water heater anti-dry auxiliary heater, form by guard shield, temperature controller sheath, temperature controller and electric heating tube, the non-thermal treatment zone of electric heating tube is in the temperature controlled region sheath, its heating wire exit passes the temperature controller sheath in guard shield, the power supply backguy is characterized in that by drawing in the guard shield temperature controller is positioned at the hot zone of the non-hot zone of the electric heating tube of sheath inner bottom part, close electric heating tube.

2. solar water heater anti-dry auxiliary heater according to claim 1 is characterized in that the temperature controller sheath is threaded with guard shield.

3. solar water heater anti-dry auxiliary heater according to claim 1 and 2 is characterized in that temperature controller presses close to the U type tube side-by-side center of electric heating tube.

4. solar water heater anti-dry auxiliary heater according to claim 3 is characterized in that two temperature controllers are positioned at the U type pipe bilateral symmetry place of electric heating tube.

5. solar water heater anti-dry auxiliary heater according to claim 1 is characterized in that spacer is positioned at temperature controller sheath inner bottom part, is enclosed within on the U type pipe of electric heating tube, is fixedly connected on the temperature controller sheath.

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