Pressurizing frequency conversion water servo water inlet valve and gas heating water heater

Abstract

The water inlet valve comprises a valve body, a tap water inlet and a tap water outlet, the valve body is provided with a main flowing channel, a first auxiliary flowing channel and a second auxiliary flowing channel, and the first auxiliary flowing channel is communicated with the main flowing channel. And a water servo electromagnetic valve is arranged at the communication part of the first auxiliary flow channel and the second auxiliary flow channel. According to the water inlet valve, through the first auxiliary flowing channel, the second auxiliary flowing channel and the water servo electromagnetic valve, when the flow needs to be increased or the pressure needs to be increased, the water servo electromagnetic valve is opened to enable the first auxiliary flowing channel to be communicated with the second auxiliary flowing channel so as to achieve the incremental pressure increasing effect, and under other conditions, the water servo electromagnetic valve is closed to enable the pressure to be increased. The first auxiliary flow channel is not communicated with the second auxiliary flow channel, so that reasonable conversion of water flow in a domestic hot water function can be realized according to the demand of domestic hot water of a user, and the bathing comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water inlet valves, and particularly relates to a pressurized variable-frequency water servo water inlet valve and a gas heating hot water boiler. Background Technique

[0002] A gas heating hot water boiler, abbreviated as a wall-mounted boiler, is mainly used for winter heating and domestic hot water. With the promotion of the national coal-to-gas project, gas heating hot water boilers have been widely used and popularized. A gas heating hot water boiler mainly consists of control, combustion, and heat exchange systems. It uses natural gas as fuel and transfers the heat generated by combustion to the circulating water of the system through the heat exchange system to provide domestic hot water and heating heat for users.

[0003] Currently, in the domestic hot water supply system, a water flow limiting ring is often installed to limit the maximum water flow to ensure the supply water temperature of domestic hot water and avoid the water temperature of domestic hot water not meeting the requirements of users at the maximum flow rate in winter when the water temperature is relatively low. However, in summer, the water temperature of tap water is relatively high, and due to the function of the limiting ring, the water flow cannot increase. On the one hand, the hot water boiler will be frequently started due to a small temperature difference, and on the other hand, because the heating temperature is still relatively high when the hot water boiler burns at the lowest power, the bathroom water will be too hot, affecting the bathroom comfort.

[0004] In the prior art, by adding a water pump in the bathroom water supply system and increasing the water flow rate, the problem of overly hot bathroom water is solved. However, this method will increase the waste of water resources and also increase the maintenance and repair of pumps. In some other technologies, by changing the combustion mode of the burner, making the grate fully open for combustion in winter and half open for combustion in summer, it can meet the requirements of different inlet water temperatures in winter and summer. However, this method is suitable for newly purchased users and is not conducive to users who need to be retrofitted later. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, one of the purposes of the utility model is to provide a pressurized variable-frequency water servo water inlet valve to solve the above-mentioned traditional problems.

[0006] The second purpose of the utility model is to provide a gas heating hot water boiler adopting the pressurized variable-frequency water servo water inlet valve.

[0007] One of the purposes of the utility model is realized by adopting the following technical solutions:

[0008] A pressurized variable-frequency water servo inlet valve, comprising a valve body, a tap water inlet and a tap water outlet. The valve body is provided with a main flow channel, a first sub-flow channel and a second sub-flow channel. The tap water inlet is arranged at the inlet of the main flow channel, and the tap water outlet is arranged at the outlet of the main flow channel. One end of the first sub-flow channel and one end of the second sub-flow channel are respectively communicated with the main flow channel. A water servo solenoid valve is arranged at the communicating place between the other end of the first sub-flow channel and the other end of the second sub-flow channel. When the water servo solenoid valve is in the closed state, the first sub-flow channel is not communicated with the second sub-flow channel. When the water servo solenoid valve is in the open state, the first sub-flow channel is communicated with the second sub-flow channel.

[0009] Preferably, the inner diameter of the main flow channel is larger than that of the first sub-flow channel.

[0010] Preferably, the inner diameter of the main flow channel is 1.2 - 2 times that of the first sub-flow channel.

[0011] Preferably, the inner diameter of the main flow channel is 1.3 - 1.8 times that of the first sub-flow channel.

[0012] Preferably, the inner diameter of the second sub-flow channel is equal to that of the first sub-flow channel.

[0013] Preferably, the main flow channel is provided with a flow limiting ring, and the flow limiting ring is arranged between the communicating places of the main flow channel with the first sub-flow channel and the second sub-flow channel.

[0014] Preferably, the inner diameter of the flow limiting ring is 0.4 - 0.8 times that of the main flow channel.

[0015] Preferably, the inner diameter of the flow limiting ring is 0.5 - 0.7 times that of the main flow channel.

[0016] Preferably, the pressurized variable-frequency water servo inlet valve further comprises a water flow sensor and a bathroom inlet NTC, and the water flow sensor and the bathroom inlet NTC are respectively arranged near the tap water outlet of the main flow channel.

[0017] The second object of the present utility model is achieved by adopting the following technical solution:

[0018] A gas-fired heating and hot water boiler, comprising the above-mentioned pressurized variable-frequency water servo inlet valve.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] The pressure-boosting variable-frequency water servo inlet valve of the present utility model, through the first auxiliary flow channel, the second auxiliary flow channel and the water servo solenoid valve, when it is necessary to increase the flow rate (such as in summer) or to boost the pressure (such as in the case of a relatively low water flow rate in the main flow channel), the water servo solenoid valve is opened to connect the first auxiliary flow channel and the second auxiliary flow channel, so as to achieve the effect of increasing flow rate and boosting pressure. In other cases, such as when there is no need to increase the flow rate (such as in winter) or no need to boost the pressure, the water servo solenoid valve is closed to disconnect the first auxiliary flow channel and the second auxiliary flow channel, enabling it to reasonably convert the water flow rate in the domestic hot water function according to the needs of the user's domestic hot water, so as to improve the bathing comfort. Brief Description of the Drawings

[0021] Figure 1 FIG. is a schematic structural diagram of the pressure-boosting variable-frequency water servo inlet valve of the present utility model installed on a gas-fired heating and hot water boiler;

[0022] Figure 2 is Figure 1 a schematic structural diagram of the pressure-boosting variable-frequency water servo inlet valve shown;

[0023] Figure 3 is Figure 2 a schematic diagram of the water flow of the pressure-boosting variable-frequency water servo inlet valve shown in the closed state of the solenoid valve;

[0024] Figure 4 is Figure 2 a schematic diagram of the water flow of the pressure-boosting variable-frequency water servo inlet valve shown in the open state of the solenoid valve.

[0025] In the figure: 10, pressure-boosting variable-frequency water servo inlet valve; 11, valve body; 110, main flow channel; 111, first auxiliary flow channel; 112, second auxiliary flow channel; 113, limiting ring; 12, tap water inlet; 13, tap water outlet; 14, water servo solenoid valve; 15, water flow sensor; 16, bathroom inlet NTC; 20, condensing furnace main heat exchanger; 30, venturi tube; 40, variable-frequency fan; 50, plate heat exchanger; 60, outlet valve; 70, electromagnetic three-way valve; 80, gas proportional valve; 90, water pump. Detailed Description of the Preferred Embodiments

[0026] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0027] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In the description of the present utility model, it should be understood that when an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be intermediate elements present simultaneously. In contrast, when an element is referred to as being "directly" connected to another element, there are no intermediate elements.

[0029] Please refer to Figures 1-4 , which is the pressurized variable-frequency water servo inlet valve 10 of a preferred embodiment of the present utility model, used for installation on a gas-fired heating and hot water boiler. Among them, the gas-fired heating and hot water boiler further includes a burner, a condensing boiler main heat exchanger 20, a Venturi tube 30, a variable-frequency blower 40, a plate heat exchanger 50, a water outlet valve 60, an electromagnetic three-way valve 70, a gas proportional valve 80, and a water pump 90. The pressurized variable-frequency water servo inlet valve 10 is installed at the tap water inlet end of the plate heat exchanger 50.

[0030] Specifically, the pressurized variable-frequency water servo inlet valve 10 includes a valve body 11, a tap water inlet 12, and a tap water outlet 13. The valve body 11 is provided with a main flow channel 110, a first sub-flow channel 111, and a second sub-flow channel 112. The tap water inlet 12 is provided at the inlet of the main flow channel 110, and the tap water outlet 13 is provided at the outlet of the main flow channel 110. One end of the first sub-flow channel 111 and one end of the second sub-flow channel 112 are respectively connected to the main flow channel 110. A water servo solenoid valve 14 is provided at the connection of the other end of the first sub-flow channel 111 and the other end of the second sub-flow channel 112. When the water servo solenoid valve 14 is in the closed state, the first sub-flow channel 111 and the second sub-flow channel 112 are not connected. When the water servo solenoid valve 14 is in the open state, the first sub-flow channel 111 and the second sub-flow channel 112 are connected.

[0031] The above-mentioned pressurized variable-frequency water servo inlet valve 10 forms a second water flow channel through the first auxiliary flow channel 111, the second auxiliary flow channel 112 and the water servo solenoid valve 14, that is, the first auxiliary flow channel 111 and the second auxiliary flow channel 112 form a second water flow channel. When it is necessary to increase the flow rate (such as in summer) or to increase the pressure (such as when the water flow rate in the main flow channel 110 is relatively low), the water servo solenoid valve 14 is opened to connect the first auxiliary flow channel 111 and the second auxiliary flow channel 112, so as to achieve the effect of increasing the flow rate and pressure. In other cases, such as when it is not necessary to increase the flow rate (such as in winter) or when it is not necessary to increase the pressure, the water servo solenoid valve 14 is closed to disconnect the first auxiliary flow channel 111 and the second auxiliary flow channel 112, so that it can realize the reasonable conversion of the water flow rate in the domestic hot water function according to the needs of the user's domestic hot water, so as to improve the bathing comfort.

[0032] In one embodiment, the inner diameter of the main flow channel 110 is larger than the inner diameter of the first auxiliary flow channel 111 or the inner diameter of the second auxiliary flow channel 112. Further preferably, the inner diameter of the main flow channel 110 is 1.2-2 times the inner diameter of the first auxiliary flow channel 111 or the inner diameter of the second auxiliary flow channel 112, such as 1.2, 1.5, 1.8, 2.0, etc., and the inner diameter of the first auxiliary flow channel 111 is equal to the inner diameter of the second auxiliary flow channel 112. Preferably, the inner diameter of the main flow channel 110 is 1.3-1.8 times the inner diameter of the first auxiliary flow channel 111 or the inner diameter of the second auxiliary flow channel 112.

[0033] In this embodiment, the main flow channel 110 is provided with a flow limiting ring 113, and the flow limiting ring 113 is arranged between the connection of the main flow channel 110 and the first auxiliary flow channel 111 and the second auxiliary flow channel 112. By limiting the flow, the amount of tap water flowing in is controlled to avoid excessive water flow rate in winter, which affects the rapid heating of the bathroom hot water. Further preferably, the inner diameter of the flow limiting ring 113 is 0.4-0.8 times the inner diameter of the main flow channel 110, such as 0.4, 0.5, 0.6, 0.7, 0.8, etc. Preferably, the inner diameter of the flow limiting ring 113 is 0.5-0.7 times the inner diameter of the main flow channel 110.

[0034] In other embodiments, the pressurized variable-frequency water servo inlet valve 10 further includes a water flow sensor 15 and a bathroom inlet NTC 16. The water flow sensor 15 and the bathroom inlet NTC 16 are respectively arranged near the tap water outlet 13 of the main flow channel 110. The water flow sensor 15 is used to detect the water flow condition of the main flow channel 110, and the bathroom inlet NTC 16 is used to monitor the tap water temperature.

[0035] The working principle of the pressurized variable-frequency water servo inlet valve 10 after being installed on a gas-fired heating and hot water boiler is as follows:

[0036] I. Summer operation mode of domestic hot water, the steps are as follows:

[0037] 1. The gas-fired heating and hot water boiler conducts self-inspection to verify whether it meets the start-up conditions. If not, the safety protection program is started, and it enters the standby state and triggers an alarm.

[0038] 2. After meeting the start-up conditions, whether there is a demand for opening domestic hot water is fed back to the controller. At the same time, it is detected whether the tap water inlet temperature is within the summer temperature range. If it is within the summer temperature range, the water servo solenoid valve 14 is opened, the second water flow channel is opened, the water flow is increased, and the heating boiler is started to heat domestic hot water.

[0039] 3. The controller controls the temperature of domestic hot water according to the intelligent module to heat the heating boiler to the required set temperature.

[0040] 4. According to whether the user's executed demand is to close domestic hot water, after closing domestic hot water, the heating boiler is turned off, and the water pump 90 stops running after a delay. Otherwise, the heating boiler continues to operate.

[0041] II. Winter operation mode of domestic hot water, the steps are as follows:

[0042] 1. The gas-fired heating and hot water boiler conducts self-inspection to verify whether it meets the start-up conditions. If not, the safety protection program is started, and it enters the standby state and triggers an alarm.

[0043] 2. After meeting the start-up conditions, whether there is a demand for opening domestic hot water is fed back to the controller. At the same time, it is detected whether the tap water inlet temperature is within the winter temperature range. If it is within the winter temperature range, the water servo solenoid valve 14 is not opened, and the heating boiler is started to heat domestic hot water.

[0044] 3. The controller controls the temperature of domestic hot water according to the intelligent module to heat the heating boiler to the required set temperature.

[0045] 4. According to whether the user's executed demand is to close domestic hot water, after closing domestic hot water, the heating boiler is turned off, and the water pump 90 stops running after a delay. Otherwise, the heating boiler continues to operate.

[0046] III. Boost operation mode of domestic hot water, the steps are as follows:

[0047] 1. The gas-fired heating and hot water boiler conducts self-inspection to verify whether it meets the start-up conditions. If not, the safety protection program is started, and it enters the standby state and triggers an alarm.

[0048] 2. After meeting the start-up conditions, whether there is a demand for opening domestic hot water is fed back to the controller. At the same time, it is detected whether the tap water flow rate is < the set minimum flow rate. If the tap water flow rate is < the set minimum flow rate, the water servo solenoid valve 14 is opened, the second water flow channel is opened, the water flow is increased, and the heating boiler is started to heat domestic hot water.

[0049] 3. The controller controls the temperature of domestic hot water according to the intelligent module, so that the heating furnace is heated to the required set temperature;

[0050] 4. According to whether the user executes the requirement to turn off domestic hot water, after turning off domestic hot water, the heating furnace is turned off, and the water pump 90 stops running after a delay; otherwise, the heating furnace continues to operate.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0052] The above-described embodiments only represent several implementation manners of the present utility model, and the description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A booster frequency conversion water servo inlet valve, characterized in that: It includes a valve body, a tap water inlet and a tap water outlet, the valve body is provided with a main flow channel, a first secondary flow channel and a second secondary flow channel, the tap water inlet is provided at the inlet of the main flow channel, the tap water outlet is provided at the outlet of the main flow channel, one end of the first secondary flow channel and one end of the second secondary flow channel are respectively connected with the main flow channel, and a water servo solenoid valve is provided at the connection between the other end of the first secondary flow channel and the other end of the second secondary flow channel. When the water servo solenoid valve is in a closed state, the first secondary flow channel is not connected with the second secondary flow channel, and when the water servo solenoid valve is in an open state, the first secondary flow channel is connected with the second secondary flow channel.

2. The boost frequency conversion water servo inlet valve according to claim 1, characterized in that: The main flow channel has an inner diameter greater than an inner diameter of the first sub-flow channel.

3. The boost frequency conversion water servo inlet valve according to claim 2 is characterized in that: The inner diameter of the main flow channel is 1.2-2 of the inner diameter of the first secondary flow channel.

4. The boost frequency conversion water servo inlet valve according to claim 3 is characterized in that: The inner diameter of the main flow channel is 1.3-1.8 of the inner diameter of the first secondary flow channel.

5. The boost frequency conversion water servo inlet valve according to claim 2, characterized in that: An inner diameter of the second sub-flow passage is equal to an inner diameter of the first sub-flow passage.

6. The booster frequency conversion water servo inlet valve according to claim 1, characterized in that: The main flow channel is provided with a flow limiting ring, and the flow limiting ring is arranged between the main flow channel and the connecting point between the first auxiliary flow channel and the second auxiliary flow channel.

7. The booster frequency conversion water servo inlet valve according to claim 6, characterized in that: The inner diameter of the flow limiting ring is 0.4-0.8 of the inner diameter of the main flow channel.

8. The booster frequency conversion water servo inlet valve according to claim 7, characterized in that: The inner diameter of the flow limiting ring is 0.5-0.7 of the inner diameter of the main flow channel.

9. The booster frequency conversion water servo inlet valve according to claim 1, characterized in that: The boost frequency conversion water servo inlet valve also includes a water flow sensor and a bathroom water inlet NTC, and the water flow sensor and bathroom water inlet NTC are respectively arranged in the main flow channel near the tap water outlet.

10. A gas-fired hot water boiler, characterized in that: It comprises the boost frequency conversion water servo inlet valve as described in any one of claims 1 to 9.

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