CN207674741U - A kind of hot water circulating device with drying function - Google Patents

Abstract

The utility model discloses a hot water circulation device with a drying function, which is characterized in that it comprises: a circulation pipeline, a first shut-off valve, a second shut-off valve, a first branch pipe, a second branch pipe, a drying rack, and a direct current variable-speed water pump , a temperature sensor and a main controller, the first cut-off valve and the second cut-off valve are respectively installed at both ends of the circulation pipeline, the first branch pipe and the second branch pipe are connected to the first cut-off On the circulation pipeline between the valve and the second shut-off valve, the water inlet end and the water outlet end of the drying rack are respectively connected with the first branch pipe and the second branch pipe, and the DC variable speed water pump and The temperature sensors are respectively installed on the first branch pipe or the second branch pipe, and the main controller communicates with the first shut-off valve, the second shut-off valve, the DC variable speed water pump and the temperature sensor connect. The utility model has the characteristics that the drying effect is good and the water heater does not start when the cold water is turned on.

Description

A hot water circulation device with drying function

technical field

The utility model relates to the technical field of water heaters, in particular to a hot water circulation device with a drying function.

Background technique

In recent years, various gas water heaters with preheating functions or supporting hot water circulation devices have appeared on the market, which can realize the central hot water system, and realize the instant heating function of gas water heaters to a certain extent.

Central gas water heaters are currently divided into two types: three-pipe installation (with return pipe) and two-pipe installation (without return pipe). Most families do not have the awareness of central hot water when decorating their houses. Considering the cost of decoration, they generally do not choose to install return water pipes. Therefore, most of the existing household central hot water is installed with two pipes, and hot water is realized with the help of one-way valves and cold water pipes. circulation, and the central hot water system still has the phenomenon of turning on the cold water heater; in addition, because this type of central hot water heats both the hot water pipe and the cold water pipe into hot water, the hot water energy in the pipes is all at the Heat dissipation takes the form of diffusion into the air.

A Chinese utility model patent with application number 201710259536.9 discloses a towel drying rack for central hot water, which is connected in series to the hot water outlet pipe of the central water heater, including the main body of the towel drying rack and the main body of the towel drying rack. on the one-way valve. Integrate the towel drying rack with the one-way valve to realize the towel drying while realizing the function of the two-pipe central hot water. But this technology can not solve the phenomenon of turning on the cold water heater. In addition, this technology only relies on the water temperature of the preheating pipeline to heat the drying rack. Since the preheating water temperature is generally below 48 degrees, the effect of the drying rack is not ideal (and There are very few users who preheat to 48 degrees).

Utility model content

Aiming at the problems existing in the prior art, the purpose of the utility model is to provide a hot water circulation device which has a good drying effect and does not start the water heater when the cold water is turned on.

In order to achieve the above object, the utility model adopts the following technical solutions.

A hot water circulation device with a drying function, characterized in that it includes: a circulation pipeline, a first shut-off valve, a second shut-off valve, a first branch pipe, a second branch pipe, a drying rack, a DC variable speed water pump, a temperature sensor and The main controller, the first cut-off valve and the second cut-off valve are respectively installed at both ends of the circulation pipeline, the first branch pipe and the second branch pipe are connected to the first cut-off valve, the On the circulation pipeline between the second shut-off valves, the water inlet end and the water outlet end of the drying rack are connected to the first branch pipe and the second branch pipe respectively, and the DC variable speed water pump and the temperature sensor Installed on the first branch pipe or the second branch pipe respectively, the main controller is connected with the first shut-off valve, the second shut-off valve, the DC variable speed water pump and the temperature sensor.

As a further description of the above solution, the drying rack includes several rows of drying pipes connected in parallel, and an electric heating device connected to the main control is arranged inside the drying rack.

As a further illustration of the above solution, the circulation pipeline, the first branch pipe and the second branch pipe are integral structures formed together, the drying rack and the first branch pipe and the second branch pipe It is a detachable structure.

As a further description of the above solution, the circulation pipeline and the main controller are installed in the same device body, and the main controller is connected to the electric heating device through an aviation plug.

As a further illustration of the above solution, a water flow sensor connected to the main controller is provided on the first branch pipe or the second branch pipe.

As a further description of the above solution, both the first cut-off valve and the second cut-off valve are normally open cut-off valves, the first branch pipe is set close to the water inlet end of the circulation pipeline, and the second branch pipe is set close to the water inlet end of the circulation pipeline. The water outlet setting of the circulation pipeline is described.

As a further description of the above solution, an operation display is connected to the main controller, and a preheating button, a drying button, a temperature raising button and a cooling button are arranged on the operation display.

The beneficial effects of the utility model are:

1. By setting the first cut-off valve, the second cut-off valve, the first branch pipe, the second branch pipe, the DC variable speed water pump and other devices, while realizing the pipeline preheating function, it can completely solve the phenomenon that the user turns on the cold water heater, and combined with the DC variable speed water pump , It can realize the uniform heating of the whole drying rack, overcome the problems of local heating, uneven heating, and low heating efficiency of the traditional drying rack, improve the heating efficiency, and operate at low speed and ultra-quiet throughout.

2. The drying rack is detachably connected to the first branch pipe and the second branch pipe fittings, and the installation and use are more flexible: according to actual use requirements, any combination of electric heating type, non-electric heating type, and ordinary hose can be selected without affecting the central heating. The water system is used, and the high-temperature water used for drying can be quickly discharged from the pipeline, which does not affect the normal use of the preheating function by the user.

3. Both the first stop valve and the second stop valve are normally open stop valves. When the system is powered off, since the first stop valve and the second stop valve are normally open, the normal water consumption of users will not be affected.

Description of drawings

Figure 1 is a schematic structural view of the hot water circulation device provided by the present invention.

Figure 2 is a schematic diagram of the application of the hot water circulation device provided by the utility model.

Fig. 3 shows the working flow chart of the hot water circulation device provided by the utility model.

Fig. 4 is a schematic diagram showing another application of the hot water circulation device provided by the present invention.

Explanation of reference signs:

1: Circulation pipeline, 2: First stop valve, 3: Second stop valve, 4: First branch pipe, 5: Second branch pipe, 6: Drying rack, 7: DC variable speed water pump, 8: Water flow sensor, 9 : temperature sensor, 10: electric heating device, 11: main controller, 12: main body of the device, 13: aviation plug, 14: the most remote water point, 15: hot water pipe, 16: cold water pipe, 17: gas water heater , 18: hose.

Detailed ways

In the description of the present utility model, it should be noted that for orientation words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "upper", "lower ", "Front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Inverse "Hour hand" and other indication orientations and positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, so as to The specific orientation structure and operation should not be interpreted as limiting the specific protection scope of the present utility model.

In addition, terms such as "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of technical features. Therefore, the definition of "first" and "second" features may explicitly or implicitly include one or more of these features, and in the description of the present utility model, the meaning of "at least" is one or more than one, unless otherwise clearly stated Specific limits.

In this utility model, unless otherwise clearly specified and limited, if there are terms "assembled", "connected", and "connected", the terms should be interpreted in a broad sense, for example, it can be a fixed connection or a detachable connection, or Integral connection; it can also be mechanical connection; it can be connected directly or through an intermediary, and it can be that two components are internally connected. Those of ordinary skill in the art can understand the specific meanings of the above-mentioned terms in the present utility model according to specific situations.

In the utility model, unless otherwise specified and limited, a first feature being "on" or "under" a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not not in direct contact but through another characteristic contact between them. Moreover, "above", "below" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature the height of. "Above", "under" and "beneath" the first feature on the second feature include that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

In the following, the specific implementation of the utility model will be further described in combination with the accompanying drawings of the specification, so that the technical solution and beneficial effects of the utility model will be clearer and more definite. The embodiments described below by referring to the figures are exemplary and intended to explain the present utility model, but should not be construed as limiting the present utility model.

As shown in Figure 1, a hot water circulation device includes: a circulation pipeline 1, a first shut-off valve 2, a second shut-off valve 3, a first branch pipe 4, a second branch pipe 5, a drying rack 6, and a DC variable-speed water pump 7 , a water flow sensor 8, a temperature sensor 9, an electric heating device 10 and a main controller 11, the first shut-off valve 2 and the second shut-off valve 3 are respectively installed at both ends of the circulation pipeline 1, and the second shut-off valve A pipe 4 and the second branch pipe 5 are connected to the circulation pipeline 1 between the first shut-off valve 2 and the second shut-off valve 3, and the water inlet and outlet of the drying rack 6 They are respectively connected to the first branch pipe 4 and the second branch pipe 5, and the DC variable speed water pump 7, the water flow sensor 8 and the temperature sensor 9 are installed in the first branch pipe 4 or the second branch pipe respectively. On the branch pipe 5, the electric heating device 10 is used to heat the drying rack 6, and the main controller 11 communicates with the first shut-off valve 2, the second shut-off valve 3, and the DC variable-speed water pump 7 , the water flow sensor 8, the temperature sensor 9 are connected to the electric heating device 10 as the control center of the whole device.

Wherein, the first shut-off valve 2 and the second shut-off valve 3 are normally open shut-off valves, the first branch pipe 4 is arranged near the water inlet end of the circulation pipeline 1, and the second branch pipe 5 is arranged near the water inlet end of the circulation pipeline 1. The water outlet end of the circulation pipeline 1 is set, the drying rack 6 includes several rows of drying pipes connected in parallel, and the electric heating device 10 is an electric heating pipe arranged in one of the drying pipes.

In this embodiment, preferably, the circulation pipeline 1 , the first branch pipe 4 and the second branch pipe 5 are integrally formed together. Preferably, the drying rack 6, the first branch pipe 4, and the second branch pipe 5 are detachable structures, and preferably the circulation pipeline 1 and the main controller 11 are installed on a device main body 12, preferably The main controller 11 is connected to the electric heating device 10 through an aviation plug 13 for waterproof and electric leakage prevention.

As shown in FIG. 2 , in actual application, the hot water circulation device is installed at the farthest water point 14 of the gas water heater 17, and the hot water pipe 15 at the farthest water point 14 is connected to the water inlet of the circulation pipe 1. The cold water pipe 16 at the farthest water point 14 is connected to the water outlet end of the circulation pipe 1 . In operation, by controlling the second cut-off valve 3 to be energized, the cold water pipe 16 at the farthest water point 14 is separated from the hot water pipe 15 to prevent cold water from flowing into the cold water pipe 16 The hot water pipeline 15 also thoroughly solves the phenomenon of starting the cold water heater.

As shown in FIG. 3 , the hot water circulation device provided by this embodiment has two functions of preheating and drying. An operation display is connected to the main controller 11, and a preheating button, Drying button, heating button and cooling button.

1) Preheating function: when the power is turned on for the first time, when the preheating function is turned on, if the temperature value T detected by the temperature sensor 9 satisfies T<Tset-ΔT, the main controller 11 will turn on the DC variable speed The water pump 7 runs at the maximum speed, the water heater works, and the water temperature is heated; when T>T is set to -1°C, the first stop valve 2 remains normally open, the second stop valve 3 is energized and closed, and the The DC variable speed water pump 7 stops running, and now the hot water pipeline is completely separated from the cold water pipeline. Among them, T is the set preheating temperature, and ΔT is the system hysteresis, which generally takes a value of 5-10K. Set T and ΔT are stored in the main controller 11, and their values can be preset or adjusted independently.

2) Drying function: when the drying function is turned on, if the temperature T detected by the temperature sensor 9 satisfies T<Tdry-10°C, the first cut-off valve 2 and the second cut-off valve 3 will be Electrically closed, the DC variable speed water pump 7 is turned on to run at half speed, and at the same time, the main controller 11 controls the electric heating device 10 to heat through the relay, so as to quickly realize the drying and heating of the objects at the drying rack 6 until T> When Tbake+10°C, the electric heating device 10 stops heating. Among them, T drying is the set drying temperature, and the drying temperature T drying can be adjusted by pressing the temperature rising button and the cooling button, and the T drying can be set between 60-80°C.

After the drying function is used, the user wants to use domestic water immediately, and needs to remove the high-temperature water at 6 places of the drying rack. The method of removing high-temperature water is: press and hold the drying button for 3 seconds, the first shut-off valve 2 and the second shut-off valve 3 remain normally open when the power is off, the DC variable speed water pump 7 is running, and the user can quickly turn on the faucet to remove the high-temperature water. Water is excluded, which greatly improves the user experience.

The full-speed and half-speed operation of the DC variable-speed water pump 7 can be realized by controlling the driving current, and the water flow rate fed back by the water flow sensor 8 can be used as a check value for the full-speed and half-speed operation of the DC variable-speed water pump 7 .

As an alternative implementation of this embodiment, the hot water circulation device can also be equipped with a common drying rack without heating pipes, and the temperature of the circulating water can also have a certain heating effect.

As another alternative implementation of this embodiment, when the user does not need to use the drying function or the installation environment is really limited, the first branch pipe 4 and the second branch pipe 5 can be connected through a common hose 18, as shown in the figure As shown in 4, the cycle preheating function of the system can be realized.

Through the description of the above structure and principle, those skilled in the art should understand that the utility model is not limited to the above-mentioned specific implementation, and the improvement and replacement of the technology known in the art on the basis of the utility model all fall within the scope of the utility model. The protection scope of the new model, the protection scope of the utility model shall be defined by the claims and their equivalents.

Claims (7)

1. a kind of hot water circulating device with drying function, which is characterized in that including：Circulating line, the first shut-off valve, second Shut-off valve, the first branch pipe, the second branch pipe, stoving rack, DC speed-changing water pump, temperature sensor and master controller, described first section Only valve, second shut-off valve are separately mounted to the both ends of the circulating line, first branch pipe, second branch pipe connection On the circulating line between first shut-off valve, second shut-off valve, the water inlet end of the stoving rack, water outlet It is connect respectively with first branch pipe, second branch pipe, the DC speed-changing water pump and the temperature sensor are installed respectively On first branch pipe or second branch pipe, the master controller and first shut-off valve, second shut-off valve, institute DC speed-changing water pump is stated to connect with the temperature sensor.

2. a kind of hot water circulating device with drying function according to claim 1, which is characterized in that the stoving rack The drying pipe for including several rows parallel connection is equipped with the electric heater unit being connect with the main control in the stoving rack.

3. a kind of hot water circulating device with drying function according to claim 1, which is characterized in that the circulation pipe Road, first branch pipe and second branch pipe are the integral structure together with molding, the stoving rack and first branch pipe, It is detachable structure between second branch pipe.

4. a kind of hot water circulating device with drying function according to claim 2, which is characterized in that the circulation pipe Road and the master controller are mounted on same apparatus main body, are inserted by aviation between the master controller and the electric heater unit Head connection.

5. a kind of hot water circulating device with drying function according to claim 1, which is characterized in that described first Branch pipe or second branch pipe are equipped with the water flow sensor being connect with the master controller.

6. a kind of hot water circulating device with drying function according to claim 1, which is characterized in that described first section Only valve and second shut-off valve are all normally opened shut-off valve, and first branch pipe is arranged close to the water inlet end of the circulating line, Second branch pipe is arranged close to the water outlet of the circulating line.

7. a kind of hot water circulating device with drying function according to claim 1, which is characterized in that in the master control It is connected with operation display on device processed, preheating button, drying button, heating button and cooling are equipped on the operation display Button.