CN2358403Y - Water heater with adjustable temperature - Google Patents

Abstract

The utility model provides a water heater device, which comprises a buffer device specially used for controlling the gas flow, a circuit device for setting constant temperature and a hot water output buffer overflow device, wherein the hot water temperature reaches constant temperature output by mutual freezing relation and control and integral collocation operation, thereby ensuring the safety and comfort of users.

Description

Water heater with adjustable temperature

The utility model relates to a water heater, more specifically the utility model relates to a water heater capable of setting a constant temperature.

Traditional gas water heaters cannot effectively control the hot water temperature within a constant temperature due to external factors such as seasons, water pressure, and gas pressure, and most users use cold water to keep the hot water temperature at It is within the temperature suitable for bathing, but when the amount of hot and cold water changes, or the gas pressure changes, or when someone uses the faucet at the same time in the same building, the output of the hot water will become hot and cold, especially at the peak time of use. Such phenomena are more serious. In addition, the water heater is empty due to mechanical or environmental factors such as the bending of the water pan control connecting rod and impurities in the water, resulting in high-temperature water vapor remaining in the output pipeline. Once the user turns on the hot water faucet, it is easy to cause overheating. Unfortunate events such as burns.

The purpose of this utility model is exactly to propose a kind of water heater device that can set constant temperature, to overcome above-mentioned shortcoming.

The utility model proposes a water heater device that can be set at a constant temperature. In the gas pipeline controlled by the gas pressure differential plate, an electromagnetic valve is set in the gas input pipeline to maintain the lowest trace gas output and avoid ignition. The instability of repeated ignition is characterized by: a gas slow-balancing device is installed on the gas output pipeline controlled by the differential pressure disc, and the appropriate position of the gas slow-balancing device is preferably corresponding to the differential pressure disc In addition, a slow balance overflow device is provided on the hot water output pipeline, and a temperature detector is set at the inlet end of the slow balance overflow device, and another function is set at the outlet end of the slow balance overflow device. A temperature detector that displays a constant temperature. The two temperature detectors are wired to input signals on a unit circuit of a central processing system, and are compared and operated through the unit circuit of the central processing system, so that the solenoid valve controlled by a differential pressure switch and The solenoid valve controlled by the micro-fire is controlled by the temperature control circuit, so that the preset temperature is within the range of +1°C, and several working cycles are planned to control the opening and closing timing of the control valve of the differential pressure disc, so as to achieve The preset temperature controls the right amount of gas output, which in turn makes the hot water output reach a constant temperature.

According to the water heater device that can be set at a constant temperature according to the utility model, the gas slow-balancing device can slow down the balance when the gas volume increases from a small moment to a large one, which can eliminate the sudden increase of the gas volume and make the change of the fire power combustion tend to be gentle And stable, so as to avoid the incomplete combustion of the main furnace flame and the shortcomings of sudden and instantaneous rise; when the water vapor passes through the gas slow balance device, it can be dissolved by the remaining water in the slow balance device and the temperature is lowered to flow out, which can avoid Burns and scalds caused by instantaneous high-pressure and high-temperature water vapor ejection can be used to stabilize the temperature of hot water. Thereby, the water heater device can be set at a constant temperature to avoid unfortunate accidents such as burns and scalds.

The structure and effect of the present utility model will be described in detail below with reference to the accompanying drawings. in,

Fig. 1 shows the basic structure of the water heater of the present utility model;

Fig. 2 shows the overall operation and control of the unit circuit 6 of the central processing system of the present utility model;

Fig. 3 is a structure and action diagram of the gas slow-balancing device 3 of the present invention;

Fig. 4 is a cross-sectional view of the slow balance overflow device 5 of the present invention.

Referring to Fig. 1, the water heater of the present utility model basically includes: two electromagnetic valves A and B for controlling the opening of the differential pressure switch arranged on the gas differential pressure plate, and a valve for controlling the minimum gas flow rate is set on the gas input pipeline 2 Solenoid valve C, at the same time, a gas slow-balance device 3 is set in the gas pipeline output by the differential pressure disc control valve, wherein the gas slow-balance device 3 is set at an appropriate position, preferably a position corresponding to the differential pressure disc 1, In addition, a slow balance overflow device 5 is provided on the hot water output pipeline 4, and a temperature detector a is set at the inlet end of the slow balance overflow device 5, and a temperature detector a is set at the outlet end of the slow balance overflow device. Temperature detector b, simultaneously this temperature detector a, b and electromagnetic valve B, C are connected on the unit circuit 6 of a central processing system, by means of the unit circuit 6 of the central processing system is done operation comparison and operation processing, and makes it in Within the range of +1°C of the preset temperature, plan several working cycles to control the opening and closing timing of the differential pressure switch, so as to achieve the appropriate amount of gas output required by the preset temperature control, and make the hot water reach the preset temperature.

Referring to the block diagram shown in Figure 2, it is mainly composed of a temperature detector a, a temperature detector b, a preset temperature circuit and a unit circuit of a central processing system, and its operation is detected by the temperature detector a signal, Then input the unit circuit of the central processing system, and at the same time use the preset temperature range of about +1°C as a reference to prompt the central processing system circuit to perform calculation comparison and operation processing, and within the preset temperature range of about +1°C, plan tree species work Periodic output, by controlling the opening and closing timing of the differential pressure disc valve, the appropriate amount of gas output required for preset temperature control is achieved, and the hot water output reaches a preset constant temperature. At the same time, with the help of the signal of the temperature detector b, it is used as a constant temperature display. When the circuit needs to be powered by a battery, a voltage boost circuit can be provided to provide an appropriate voltage source for the circuit.

In the device of the mechanical part of the present utility model, the gas buffering device 3 is mainly to prevent backfire, and its protective function is mainly to prevent the backfire phenomenon caused by the sudden reduction of gas in the gas pipeline, avoiding the occurrence of accidental disaster. Another protection device of the present utility model is a slow balance overflow device 5 arranged on the hot water output pipeline 4. The slow balance overflow device 5 is mainly to prevent the instantaneous high pressure and high temperature water vapor from being directly generated when the water heater is empty. to prevent burns and scalds, because when the water vapor passes through the device, it can be dissolved by the residual water level in the slow balance overflow device 5 and the temperature can be lowered to flow out, so that the instantaneous high pressure and high temperature water vapor can be avoided. Burns and scalds, and at the same time, it can make the temperature of hot water more constant with the help of its slowing and balancing effect.

Referring to Fig. 3, it shows the structure and action diagram of the gas buffering device 3 of the present invention. When the hot water faucet is turned on, indicating that the water heater is to be used, the control valve 31 of the water flow detection switch pushes upwards to conduct the gas. First, the main fire is ignited through the conduction of the normally closed solenoid valve A, and after the ignition of the main fire is confirmed, a voltage is sent to the solenoid valve, and it is turned on, so that the gas is sent to the main furnace conduit 32 through the small fire conduit 34, and then The difference of a few seconds makes the normally open solenoid valve B control the flow valve, that is, when the low fire becomes a big fire in an instant, the gas that rises in the instant will be directly reflected on the combustion state of the main furnace. In the design of ordinary main furnace On the contrary, a large number of changes at this moment will cause the disadvantage of incomplete combustion. The gas slow-balancing device 3 of the present utility model can be slow-balanced when the gas volume increases from small to large instantaneously, so that the gas volume can be changed from small to large to avoid a state of sudden increase. That is, at the beginning, a small amount of gas is sent from the through hole 33 to the main furnace duct 32 to be burned by the burner, and when there is a large gas output, the subsequent large amount of gas pressure is used to push the slow balance rubber diaphragm 38 to make the valve plug 37 recedes to form a circulation path. With the help of the slow balance space produced by the slow balance rubber film 38, the state of a large amount of gas suddenly rising can be eliminated, and the change of fire power combustion tends to be gentle and stable, thereby avoiding the main furnace The flame does not burn completely, and has the disadvantage of rising suddenly and instantaneously.

Referring to Fig. 4, it is a sectional view of the slow balance overflow device 5 of the present utility model. When hot water is sent into the overflow tube 52 through the bottom of the overflow tube 52 by the pipeline 51, the water level in the overflow tube 52 will slow down. Slowly rise to the top of the hot water output pipeline 4, and the hot water is sent out by the siphon principle, and when the hot water is used up, the overflow cylinder 52 will be almost full of water level, once the water heater is empty During the phenomenon, the instantaneous high pressure and high temperature water vapor produced by it will directly spray into the water in the overflow tube 52 at this time, because the water vapor will flow out after the water level of the device is slowly balanced and the temperature is lowered, so that Avoid burns caused by instantaneous high-pressure, high-temperature water vapor spraying out directly.

The above is a preferred embodiment of the utility model, and various deformations and modifications can be made without departing from the concept of the utility model. For example, the fire row of the present utility model can be replaced by a water heater with low-fire control, that is, when the high-voltage ignition and the main fire solenoid valve are started to ignite, a low-fire ignition signal detected by the low-fire detector is used, and then the A set of delay circuits delay for 1 second, output to the output control circuit of the main furnace solenoid valve, and at the same time cooperate with the operation of the temperature control circuit to change the working cycle of the main furnace solenoid valve, and further promote the main furnace control solenoid valve to be controlled by temperature. Select the appropriate opening and closing timing to achieve the purpose of outputting an appropriate gas output, that is, to use low fire control and high temperature environment or to achieve constant temperature control at low water pressure output.

Claims (1)

1. A water heater device capable of setting constant temperature is characterized in that in a gas pipeline controlled by a gas pressure difference disc, an electromagnetic valve is arranged in a gas input pipeline to keep the lowest trace gas output so as to avoid the instability of repeated ignition of an igniter, and the device is characterized in that: a gas slow balancing device is arranged on a gas output pipeline controlled by a pressure difference disc, wherein the proper position of the gas slow balancing device is preferably the position corresponding to the pressure difference disc, a slow balancing overflow device is arranged on the hot water output pipeline, a temperature detector is arranged at the inlet end of the slow balancing overflow device, another temperature detector for displaying constant temperature is arranged at the outlet end of the slow balancing overflow device, the two temperature detectors are connected with an input signal on a unit circuit of a central processing system, comparison and operation processing are carried out through the unit circuit of the central processing system, so that the electromagnetic valve controlled by a pressure difference switch and the electromagnetic valve controlled by micro fire are controlled by a temperature control circuit to plan a plurality of working periods within the range of +/-1 ℃ of the preset temperature so as to control the opening and closing time of a control valve of the pressure difference disc to achieve the proper gas output of the preset temperature control, thereby the hot water output reaches a constant temperature.

Images