CN205373025U - Water heating system - Google Patents

Abstract

The utility model relates to a hot water system, comprising a heat pump water heater provided with a first water inlet, a first water outlet and a first return water outlet, a heating device located in the heat pump water heater, a second water inlet and a The insulation water tank of the second water return port, the first temperature detector and the water level detector located in the insulation water tank, the first water inlet is provided with a water inlet valve, the first water outlet and the second water inlet are connected with a water supply pipeline, the second A circulation pipe is connected between the first water return port and the second water return port, and a circulation valve is arranged on the circulation pipe. When the water level in the water tank is too high and the water temperature cannot meet the user's requirements, by closing the water inlet valve and opening the circulation valve, the water in the heat preservation water tank flows into the heat pump water heater. After the water in the heat pump water heater is heated, the heated water returns to the insulation The water tank ensures the water temperature of the user and prevents the water in the water tank from overflowing, reducing energy waste and saving energy.

Description

hot water system

technical field

The utility model relates to the technical field of hot water, in particular to a hot water system.

Background technique

The hot water machine is a new type of hot water and heating product. It is a heating equipment and hot water device that can replace the boiler. It is gradually accepted by the majority of users because of its high efficiency, energy saving, green environmental protection, safety, reliability, and all-weather convenience. But the traditional hot water machine only has two modes of direct heating and standby. When the water level of the water tank is too high, if the heating continues, the water in the water tank will overflow. waste.

Utility model content

The purpose of the utility model is to provide a hot water system and its control method, which can ensure the water temperature of the user, prevent the water from overflowing from the water tank, reduce energy waste, and achieve high efficiency and energy saving.

For realizing the purpose of this utility model, the technical scheme that takes is:

A hot water system, comprising a heat pump water heater with a first water inlet, a first water outlet and a first water return, a heating device located in the heat pump water heater, a second water inlet, and a second water outlet and the insulating water tank of the second water return port, the first temperature detector and the water level detector located in the insulating water tank, the first water inlet is provided with a water inlet valve, and the first water outlet and the second water inlet are connected with a water supply pipeline, A circulation pipe is connected between the first water return port and the second water return port, and a circulation valve is arranged on the circulation pipe.

By connecting the circulation pipeline between the heat pump water heater and the thermal insulation water tank, the hot water system not only has the working modes of direct heating and standby, but also the working mode of circulating heating. When the water level in the water tank is too high and the water temperature cannot meet the user's requirements, by closing the water inlet valve and opening the circulation valve, the water in the heat preservation water tank flows into the heat pump water heater from the second water return port, and the heating device controls the water flowing into the heat pump water heater. When heated to the set temperature, the heated water flows back from the first water outlet to the heat preservation water tank, and the user can get hot water at a suitable temperature by opening the second water outlet, ensuring the user's water temperature and preventing the water in the water tank from overflowing , without direct heating, the hot water system switches to different working modes according to different needs, reducing energy waste and saving energy.

The technical scheme is further described below:

Further, the hot water system also includes a controller, which is electrically connected with the heat pump water heater, the first temperature detector, the water level detector, the water inlet valve and the circulation valve. The first temperature detector sends the detected temperature value and the water level value detected by the water level detector to the controller. The controller compares the collected information with the preset information, and controls the water inlet valve and the circulation valve to automatically switch the hot water system Switch to direct heat mode, circulation mode or standby mode for more precise control of the hot water system.

Further, the first water outlet is provided with a second temperature detector electrically connected to the controller. The controller collects the temperature of the heat pump water heater through the second temperature detector, so that the control of the hot water system is more precise.

Further, both the first temperature detector and the second temperature detector are temperature sensors.

Further, the hot water system also includes at least one living port, a water outlet pipe is connected between the living port and the second water outlet, and a water outlet valve electrically connected to the controller is provided on the water outlet pipe. The living port takes out the water in the thermal water tank through the second water outlet, and controls the opening or closing of the water outlet valve through the controller, so that the domestic water used by the user can meet the requirements and improve the user experience.

Further, the hot water system also includes a water inlet pipe connected to the first water inlet, the water inlet pipe is provided with a water inlet pump, and the water inlet pump is provided with a water inlet valve. Tap water flows into the heat pump water heater from the water inlet pipe through the action of the water inlet pump, and the flow and closure of the water inlet pipe are controlled by the water inlet valve, which makes the control easier.

Further, the circulation pipeline is provided with a circulation water pump, and the circulation water pump is provided with a circulation valve. The water is sent from the insulated water tank to the heat pump water heater through the circulating water pump, and the circulating valve is used to control the circulation and closing of the circulating pipeline, which makes the control easier.

Further, the water level detector is a liquid level sensor. The detection of the liquid level sensor is sensitive and accurate, which makes the control of the hot water system more precise.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model has three working modes: direct heating mode, circulation mode and standby mode. By switching between the three modes at different water levels and different water temperatures, the temperature of the water in the heat preservation water tank is guaranteed, thereby ensuring the temperature of the water used by the user. Improve user experience, reduce energy waste, and save energy.

Description of drawings

Fig. 1 is a schematic structural diagram of a hot water system according to an embodiment of the present invention.

Explanation of reference signs:

10. Heat pump water heater, 110. First water inlet, 111. Water inlet valve, 120. First water outlet, 130. First water return port, 20. Insulated water tank, 210. Second water inlet, 220. Second Water outlet, 230. Second water return port, 30. First temperature detector, 40. Water level detector, 50. Water supply pipeline, 60. Circulation pipeline, 610. Circulation valve, 80. Living port, 810. Water outlet pipeline, 820 . Water outlet valve, 90. Water inlet pipe.

detailed description

Embodiment of the utility model is described in detail below in conjunction with accompanying drawing:

As shown in FIG. 1 , a hot water system includes a heat pump water heater 10 provided with a first water inlet 110 , a first water outlet 120 and a first water return port 130 , and a heating device located in the heat pump water heater 10 ( The accompanying drawings are not marked), the thermal insulation water tank 20 that is provided with the second water inlet 210, the second water outlet 220 and the second return water outlet 230, the first temperature detector 30 and the water level detector 40 located in the thermal insulation water tank 20, the first The water inlet 110 is provided with a water inlet valve 111, a replenishment pipeline 50 is connected between the first water outlet 120 and the second water inlet 210, a circulation pipeline 60 is connected between the first water return port 130 and the second water return port 230, and the circulation pipeline 60 is provided with a circulation valve 610 .

By connecting the circulation pipeline 60 between the heat pump water heater 10 and the thermal insulation water tank 20, the hot water system not only has the working modes of direct heating and standby, but also the working mode of circulating heating. When the water level in the water tank is too high and the water temperature cannot meet the user's requirements, then by closing the water inlet valve 111 and opening the circulation valve 610, the water in the heat preservation water tank 20 flows into the heat pump water heater 10 from the second water return port 230, and the heating device flows into the heat pump. When the water in the hot water machine 10 is heated to the set temperature, the heated water flows back from the first water outlet 120 to the heat preservation water tank 20, and the user can obtain hot water at a suitable temperature by opening the second water outlet 220, ensuring the user's water consumption. temperature, and prevent the water in the water tank from overflowing, without direct heating, the hot water system switches to different working modes according to different needs, reducing energy waste and saving energy.

In this embodiment, the heating device includes a heat exchange tube and a heat exchange medium. The water inlet end of the heat exchange tube communicates with the first water inlet 110 and the first water return port 130, and the water outlet end of the heat exchange tube communicates with the first water outlet. 120 connection, by adjusting the temperature and flow parameters of the heat exchange medium, and by setting the length of the heat exchange tube, the temperature at which the water is heated after passing through the heat exchange tube can be adjusted. The heating device can also be set in other ways according to actual needs.

The hot water system also includes a controller (not marked in the drawings), which is electrically connected to the heat pump water heater 10 , the first temperature detector 30 , the water level detector 40 , the water inlet valve 111 and the circulation valve 610 . The first temperature detector 30 sends the detected temperature value and the water level value detected by the water level detector 40 to the controller, and the controller compares the collected information with the preset information, and controls the water inlet valve 111 and the circulation valve 610, Automatically switch the hot water system to direct heating mode, circulation mode or standby mode, making the control of the hot water system more precise.

In this embodiment, the water level detector 40 is a liquid level sensor. The detection of the liquid level sensor is sensitive and accurate, which makes the control of the hot water system more precise. The water level detector 40 can also adopt other forms according to actual needs.

As shown in FIG. 1 , the first water outlet 120 is provided with a second temperature detector (not marked in the drawings) electrically connected to the controller. The controller collects the temperature of the heat pump water heater 10 through the second temperature detector, so that the control of the hot water system is more precise.

In this embodiment, both the first temperature detector 30 and the second temperature detector are temperature sensors, the second temperature sensor is a casing temperature sensor, and the second temperature sensor is sleeved at the water outlet end of the heat exchange tube of the heating device. The first temperature detector 30 and the second temperature detector can also be arranged in other forms according to actual needs.

As shown in Figure 1, the hot water system also includes at least one living port 80, an outlet pipe 810 is connected between the living port 80 and the second water outlet 220, and a water outlet valve 820 electrically connected to the controller is provided on the outlet pipe 810 . The living port 80 takes out the water in the thermal water tank 20 through the second water outlet 220, and controls the opening or closing of the water outlet valve 820 through the controller, so that the domestic water used by the user can meet the requirements and improve the user experience.

In this embodiment, the water outlet pipe 810 is provided with a water outlet pump electrically connected to the controller, and the water outlet pump is provided with a water outlet valve 820 . Through the work of the water outlet pump of the controller, the water is sent from the heat preservation water tank 20 to the living port 80 through the water outlet pump, so that the operation of the hot water system is more stable.

As shown in FIG. 1 , the hot water system further includes a water inlet pipe 90 communicating with the first water inlet 110 , and a water inlet valve 111 is provided on the water inlet pipe 90 . Tap water flows into the heat pump water heater 10 through the water inlet pipe 90, and the flow and closure of the water inlet pipe 90 are controlled by the water inlet valve 111, which makes the control easier.

In this embodiment, the water inlet pipe 90 is provided with a water inlet pump electrically connected to the controller, the water inlet pump is provided with a water inlet valve 111, and the circulation pipe 90 is provided with a circulating water pump electrically connected with the controller, and the circulating water pump A circulation valve 610 is provided. Through the work of the water outlet pump and the circulating water pump of the controller, the tap water is sent from the water inlet pipe 90 to the heat pump water heater 10 through the function of the water inlet pump, and the water is sent from the heat preservation water tank 20 to the heat pump water heater 10 through the function of the circulating water pump. Make the hot water system work more stably.

The hot water system of the utility model has three working modes: direct heating mode, circulation mode and standby mode, and the control method of the hot water system comprises the following steps:

(1), set the high water level of the thermal insulation water tank 20 as L1, the low water level as L2, the high temperature as H1, and the low temperature as H2; the working steps of setting the direct heating mode are: open the water inlet valve 111, and close the circulation valve 610 , the heating device heats the water entering the heat pump water heater 10 to a set temperature, and the heated water is discharged from the first water outlet 120 and flows into the heat preservation water tank 20; the working steps of setting the circulation mode are as follows: close the water inlet valve 111, Open the circulation valve 610, the water in the thermal insulation water tank 20 is discharged from the second water return port 230 and flows into the heat pump water heater 10, the heating device heats the water entering the heat pump water heater 10 to a set stable temperature, and the heated water flows from the first The water outlet 120 is discharged and returned to the heat preservation water tank 20; the working steps of setting the standby mode are: close the water inlet valve 111 and the circulation valve 610, and the heating device stops working;

(2), temperature detector carries out real-time detection to the temperature of thermal insulation water tank 20, and the temperature value of its detection is H; Water level detector 40 is carried out real-time detection to the water level of thermal insulation water tank 20, and the water level value of its detection is L;

(3) When L≥L1, execute step (I); when L≤L2, execute step (II); when L2<L<L1, if L≥L1 before L2<L<L1, execute Step (Ⅲ); when L2<L<L1, if before L2<L<L1, L≤L2, execute step (Ⅳ);

(I), when h≤H2, the hot water system enters the circulation mode; when h≥H1, the hot water system enters the standby mode; when H2<h<H1, if before H2<h<H1, h≥H1 , the hot water system enters standby mode; when H2<h<H1, if h≤H2 before H2<h<H1, the hot water system enters circulation mode;

(Ⅱ), the hot water system enters the direct heating mode;

(Ⅲ) When h<H1, the hot water system enters the circulation mode; when h≥H1, the hot water system enters the direct heating mode;

(Ⅳ) The hot water system enters the direct heating mode.

The hot water system has three working modes: direct heating mode, circulation mode, and standby mode. By switching between the three modes at different water levels and different water temperatures, the temperature of the water in the thermal insulation water tank 20 is guaranteed, thereby ensuring the temperature of the water used by users. , improve user experience, and can reduce energy waste, high efficiency and energy saving.

In this embodiment, the first temperature detector 30 sends the detected temperature value H and the water level value L detected by the water level detector 40 to the controller. Automatically switches to direct heat mode, circulation mode or standby mode. Make the control of the hot water system more precise.

The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the utility model, and the description thereof is relatively specific and detailed, but it should not be interpreted as a limitation on the patent scope of the utility model. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the scope of protection of the utility model patent should be based on the appended claims.

Claims (7)

1. A hot water system, characterized in that it comprises a heat pump water heater provided with a first water inlet, a first water outlet and a first return water outlet, a heating device located in the heat pump water heater, a first Two water inlets, a second water outlet, and a second water return tank, the first temperature detector and the water level detector located in the heat preservation water tank, the first water inlet is provided with a water inlet valve, and the first water inlet is provided with a water inlet valve. A water supply pipeline is connected between the water outlet and the second water inlet, and a circulation pipeline is connected between the first water return opening and the second water return opening, and a circulation valve is arranged on the circulation pipeline. 2. The hot water system according to claim 1, further comprising a controller, the controller communicates with the heat pump water heater, the first temperature detector, the water level detector, the The water inlet valve is electrically connected with the circulation valve. 3. The hot water system according to claim 2, wherein the first water outlet is provided with a second temperature detector electrically connected to the controller. 4. The hot water system according to claim 3, wherein both the first temperature detector and the second temperature detector are temperature sensors. 5. The hot water system according to claim 2, further comprising at least one living port, a water outlet pipe is connected between the living port and the second water outlet, and the water outlet pipe is provided with a The controller is electrically connected to the water outlet valve. 6. The hot water system according to claim 2, further comprising a water inlet pipe communicating with the first water inlet, the water inlet pipe is provided with a water inlet pump, and the water inlet pump is provided with the Said water inlet valve. 7. The hot water system according to any one of claims 1 to 6, characterized in that a circulating water pump is provided on the circulating pipeline, and the circulating water pump is provided with the circulating valve.