CN202628362U - Water heater of engine - Google Patents

Abstract

The utility model relates to an engine water heater, which comprises a casing, a water inlet and a water outlet. The casing is an approximately right-angled triangle viewed from the side, and the smaller end of the casing is provided with a water inlet. The side of the large end, wherein the inside of the housing is a heating chamber, the heating chamber is provided with a heating tube and an overheating protection device, the indicator light of the overheating protection device is located on the circuit board, and the circuit board is fixed on the inner side wall of the rear cover of the housing superior. The overheat protection device includes two temperature control switches, one temperature control switch controls the temperature of water, and the other temperature control switch is used for overheat protection. In the utility model, two temperature control switches are connected in series in the heating circuit to control the water temperature and dry heating respectively. One temperature control switch controls the water temperature at 40 degrees, and the power is automatically cut off when the temperature rises, which can also save energy. A temperature control switch controls dry heating. When the water volume decreases, it is easy to cause dry heating and damage the heater. Adding a dry heating temperature control switch can prolong the service life of the heater.

Description

engine water heater

technical field

The utility model relates to the field of engine auxiliary heating, and specifically designs an engine water heater.

Background technique

With the development of society, the engine is used more and more widely as a power-providing device. In addition to the engine that we are familiar with, the generator set also relies on the engine to provide power.

When the engine is used in winter, the lubricant will agglomerate during cold start, and the engine will not start well. At the same time, the lubricating effect of the lubricant agglomeration will decrease, which will cause relatively large damage to the engine and shorten the service life of the engine. The heating device for the engine becomes an indispensable auxiliary machine for the engine. Patent ZL00253119.4 proposes a kind of engine heater, but this patent does not solve this problem that temperature keeps increasing and dry burning.

Contents of the invention

The utility model proposes an engine water heater aiming at the deficiencies in the prior art.

The technical scheme of the utility model is: an engine water heater, including a housing, a water inlet, and a water outlet. The housing is viewed from the side as an approximately right-angled triangle, and the smaller end of the housing is provided with a water inlet and a water outlet. On the side of the larger end of the shell, the inside of the shell is a heating chamber, and a heating tube and an overheating protection device are arranged inside the heating chamber. The indicator light of the overheating protection device is located on the circuit board, and the circuit board is fixed behind the shell on the inside wall of the cover.

In the engine water heater, the overheat protection device includes two temperature control switches, one of which controls the temperature of the water, and the other temperature control switch is used for overheat protection.

The beneficial effects of the utility model are:

1. In the utility model, two temperature control switches are connected in series in the heating circuit to control the water temperature and dry heating respectively. One temperature control switch controls the water temperature at 40 degrees, and the power is automatically cut off when the temperature rises, which can also save energy. , another temperature control switch controls dry heating. When the water volume decreases, it is easy to cause dry heating and damage the heater. Adding a dry heating temperature control switch can prolong the service life of the heater.

2. The housing of the utility model is provided with an indicator light, which can conveniently observe the working state of the heater, and is convenient for the staff to check.

Description of drawings

Fig. 1 is a schematic block diagram of the utility model workflow;

Fig. 2 is the assembly structure schematic diagram of the present utility model;

Fig. 3 is the schematic diagram of circuit work of the present utility model;

In the figure: 1 is the heater shell, 2 is the bracket, 3 is the pipe plug, 4 is the cable, 5 is the sealing ring, 6 is the heating tube, 7 is the temperature control switch, 8 is the installation plate, 9 is the circuit board, 10 is a foamed silica gel sealing strip, 11 is a casing back cover, 12 is a panel, and K1 and K2 are temperature control switches.

Detailed ways

Embodiment 1: A water heater for an engine, comprising a housing, the housing is an approximately right-angled triangle viewed from the side, a water inlet is provided at the smallest end of the housing, and the water outlet is arranged on the top of the larger end of the housing. The inside of the body is a heating chamber, and the large end of the shell is equipped with a heating tube. A silicone rubber sealing ring is placed between the flange seat of the heating tube and the shell to prevent water leakage. On one of the two terminals of the heating tube Two temperature control switches are connected in series, one temperature control switch is responsible for limiting the water temperature below 40 degrees, and the other temperature control switch prevents dry boiling. Two of the temperature control switches are connected in series with the heating tube, the temperature control switch is fixed on the flange seat of the heating tube by the mounting plate, the circuit board is fixed on the rear shell of the heater, the outer side of the mounting plate is the rear cover of the housing, and the rear cover of the housing Fastened to the shell by screws.

Two light-emitting diode indicator lights are installed on the circuit board, one of which is first connected in series with the rectifier diode and the resistor, and then connected in parallel with the heating tube, and then connected in parallel and then connected in series with two temperature control switches to form a loop. Another light-emitting diode is first connected in series with a resistor and a rectifier diode to form a loop. There is a light guide hole for the indicator light on the back cover of the heater, and the small hole matches the position of the light-emitting diode on the circuit board. There is also a mask with translucent round holes on the back cover of the shell to observe the status of the indicator light.

The working principle of the heater: start the heater, the cold water rises after being heated, the heated water enters the engine waterway, and preheats the engine, and then the water flows back to the heater for heating and recycling.

Claims (2)

1. an engine water heater comprises housing, water intake, water outlet, and housing is seen as an approximate right angle triangle from the side; The less end of housing is provided with water intake; Water outlet is arranged on the side of the bigger end of housing, and wherein enclosure interior is a heating chamber, it is characterized in that: said heating chamber the inside is provided with heating pipe and overtemperature protection system; The tutorial light of overtemperature protection system is positioned on the circuit board, and circuit board is fixed on the madial wall of housing bonnet.

2. engine water heater according to claim 1 is characterized in that: said overtemperature protection system comprises two temperature detect switch (TDS)s, the temperature of one of them temperature detect switch (TDS) control water, and another temperature detect switch (TDS) is as overtemperature protection.

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