CN219934299U - Zero cold water hot water system - Google Patents

Abstract

The utility model discloses a zero cold water heating system, which comprises a water heater, a hot water pipe, a cold water pipe and a water pump system; the hot water pipe is communicated with a water outlet of the water heater, and a plurality of water using points are connected to the hot water pipe; the cold water pipe is communicated with a water inlet of the water heater, and a plurality of water points are connected with the cold water pipe; the water pump system comprises a connecting branch, a water pump and a control valve, wherein the water pump and the control valve are arranged on the connecting branch, the water inlet end of the connecting branch is connected with a hot water pipe, and the water outlet end of the connecting branch is connected with a cold water pipe. The technical scheme of the utility model can realize zero cold water consumption and avoid the situation that the water heater is started by mistake caused by cold water opening.

Description

Zero cold water hot water system

Technical Field

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

Background

Water heaters in the market, such as gas water heaters, can have a circulating preheating function, and can preheat water in a circulating pipeline so as to achieve the purpose of obtaining hot water by opening a valve when water is used, namely a zero cold water function. However, in the current zero-cooling water heater products, an additional water return pipe is usually required to realize zero-cooling water, so that the installation of the water heater is more complicated.

When the user does not have the return pipe, the four-way pipe is needed, the return valve is needed to be arranged in the four-way pipe, or the return valve is arranged between the hot water pipe and the tap water pipe to build a loop, after the return valve is used for building the loop, the condition that hot water flows into the cold water pipe through the return valve when the cold water is started can occur, and even the condition that the cold water is started to cause the water heater to start by mistake can occur when the water flows too much.

Disclosure of Invention

The utility model mainly aims to provide a zero cold water heating system, which aims to realize zero cold water consumption and simultaneously avoid the situation that a water heater is started by mistake caused by cold water opening.

In order to achieve the above object, the present utility model provides a zero cold water and hot water system, comprising:

a water heater;

the hot water pipe is communicated with the water outlet of the water heater and is connected with a plurality of water using points;

the cold water pipes are communicated with the water inlets of the water heater, and a plurality of water consumption points are connected with the cold water pipes;

the water pump system comprises a connecting branch, a water pump and a control valve, wherein the water pump and the control valve are arranged on the connecting branch, the water inlet end of the connecting branch is connected with the hot water pipe, and the water outlet end of the connecting branch is connected with the cold water pipe.

In an embodiment of the utility model, the water pump system further comprises a main board, and the water pump and/or the control valve are/is connected to the main board in a communication manner.

In an embodiment of the utility model, the water pump system further includes a temperature sensor, and the temperature sensor is disposed on the connection branch and is communicatively connected to the main board.

In an embodiment of the utility model, the water pump system further includes a remote controller, and the remote controller is communicatively connected to the main board.

In one embodiment of the utility model, the remote control has a reminder.

In an embodiment of the utility model, the water pump system further comprises a water flow sensor, and the water flow sensor is arranged on the connecting branch and is connected to the main board in a communication manner.

In an embodiment of the utility model, the water pump system further includes a housing, the connection branch is disposed through the housing, and the water pump, the control valve and the main board are disposed in the housing.

In an embodiment of the utility model, the hot water pipe comprises a hot water main pipe and a plurality of hot water branch pipes, the hot water main pipe is communicated with a water outlet of the water heater, the plurality of hot water branch pipes are connected with the hot water main pipe, and each hot water branch pipe is connected with one water consumption point;

the cold water pipe comprises a cold water main pipe and a plurality of cold water branch pipes, the cold water main pipe is communicated with a water inlet of the water heater, the plurality of cold water branch pipes are connected with the cold water main pipe, and each cold water branch pipe is connected with a water consumption point;

the water inlet end of the connecting branch is connected with one hot water branch pipe, and the water outlet end of the connecting branch is connected with one cold water branch pipe.

In an embodiment of the present utility model, the water inlet end and the water outlet end of the connection branch are respectively connected with a hot water branch pipe and a cold water branch pipe connected with the same water point.

In an embodiment of the present utility model, one of the water points is a hand washing tray, the water pump system is located below the hand washing tray, and the water inlet end and the water outlet end of the connection branch are respectively connected with a hot water branch pipe and a cold water branch pipe connected with the hand washing tray.

In the zero cold water hot water system, before a user uses hot water, as the water temperature of the hot water discharged from the water heater is lower when the water heater is just started, the hot water discharged from the water heater is circulated into the cold water pipe through the hot water pipe and the water pump system by starting the water pump and the control valve on the water pump system so as to form a circulation loop with the water heater, a water return pipe is not required to be additionally arranged, when the hot water discharged from the water heater reaches the preset temperature, the zero cold water time is up, at the moment, the water pump and the control valve on the water pump system are closed, and the effect of zero cold water consumption can be realized after the water consumption point is opened; and because the water pump and the control valve on the water pump system are in a closed state when the water consumption point is opened, namely, the connection between the hot water pipe and the cold water pipe is disconnected, the cold water pipe can use cold water anyway, and the situation that the water heater is started by mistake due to the fact that the cold water is opened can be avoided no matter how large flow is used.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a zero-water-chilling hot-water system according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a water pump system according to an embodiment of the zero-water-heating water system of the present utility model.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Zero cold water hot water system	43	Control valve
10	Water heater	44	Main board
				20	Hot water pipe	45	Temperature sensor
21	Hot water main pipe	46	Remote controller
				22	Hot water branch pipe	461	Prompting device
30	Cold water pipe	47	Water flow sensor
				31	Cold water main pipe	48	Outer casing
32	Cold water branch pipe	50	Water consumption point
				40	Water pump system	51	Hand washing tray
41	Connection branch	52	Shower head
				42	Water pump

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The present utility model proposes a zero cold water heating system 100, which aims to prevent the situation that the water heater 10 is started by mistake due to cold water when zero cold water is used.

The specific construction of the zero cold water hot water system 100 of the present utility model will be described below:

referring to fig. 1 and 2 in combination, in an embodiment of the zero cold water hot water system 100 of the present utility model, the zero cold water hot water system 100 includes a water heater 10, a hot water pipe 20, a cold water pipe 30, and a water pump system 40; the hot water pipe 20 is communicated with the water outlet of the water heater 10, and a plurality of water using points 50 are connected to the hot water pipe 20; the cold water pipe 30 is communicated with a water inlet of the water heater 10, and a plurality of water points 50 are connected with the cold water pipe 30; the water pump system 40 comprises a connecting branch 41, a water pump 42 and a control valve 43 which are arranged on the connecting branch 41, wherein the water inlet end of the connecting branch 41 is connected with the hot water pipe 20, and the water outlet end of the connecting branch 41 is connected with the cold water pipe 30.

It can be understood that in the zero-cold water heating system 100 according to the present utility model, before the user uses the hot water, because the temperature of the hot water discharged from the water heater 10 is low just when the water heater 10 is turned on, the hot water discharged from the water heater 10 is circulated into the cold water pipe 30 through the hot water pipe 20 and the water pump system 40 by opening the water pump 42 and the control valve 43 on the water pump system 40 to form a circulation loop with the water heater 10, and no additional water return pipe is needed, when the hot water discharged from the water heater 10 reaches the preset temperature, the zero-cold water time is indicated to be reached, and at this time, the water pump 42 and the control valve 43 on the water pump system 40 are closed, and the effect of zero-cold water consumption can be achieved after the water point 50 is opened; in addition, since the water pump 42 and the control valve 43 of the water pump system 40 are in the closed state when the water point 50 is opened, that is, the connection between the hot water pipe 20 and the cold water pipe 30 is disconnected, the cold water pipe 30 can avoid the situation that the water heater 10 is started by mistake due to the fact that the cold water is started no matter how large the cold water is used.

In addition, the preheating circulation loop is formed by the water pump system 40, the cold water pipe 30, the water heater 10 and the hot water pipe 20, so that an additional water return pipe is not needed, the zero cold water consumption can be realized, the pipeline structure of the zero cold water hot water system 100 is effectively simplified, the installation steps are reduced, and the water heater 10 is simpler and more convenient to install.

In the present embodiment, a control valve 43 may be installed at the water outlet side of the water pump 42 for turning on or off the communication of the hot water pipe 20 with the cold water pipe 30, and the control valve 43 may form a warm-up circulation loop among the water heater 10, the hot water pipe 20, the water pump system 40, and the cold water pipe 30 when the communication of the hot water pipe 20 with the cold water pipe 30 is turned on. The water pump 42 is responsible for pushing the circulation flow of water flow, when the water pump 42 and the control valve 43 are in an on state, under the power action of the water pump 42, the water in the hot water pipe 20 can be smoothly pushed into the cold water pipe 30, and then flows to the water heater 10 for preheating through the cold water pipe 30, so that the flow speed of the water flow cold water pipe 30 of the hot water pipe 20 can be increased, the preheating time can be shortened, the waiting time of a user can be shortened, and the use satisfaction of the user can be improved.

In some embodiments, the water heater 10 may be a gas water heater 10. Of course, the water heater 10 may be any other type of water heater 10, such as an electric water heater 10, which is not specifically limited herein. The heat exchanger inside the water heater 10 is used for heating the cold water flowing in from the cold water pipe 30 and then flowing out from the hot water pipe 20, so that the hot water flowing out from the hot water pipe 20 can flow to the water point 50 to provide hot water for the water point 50; the cold water pipe 30 can be connected with a tap water pipe, so that cold water can be provided for the water heater 10 by the cold water pipe 30, and cold water can also be provided for the water consumption point 50, so that a user can regulate and control the water outlet temperature of the water consumption point 50 through a water mixing valve at the water consumption point 50.

In some embodiments, the plurality of water usage points 50 may include, in particular, shower heads 52, faucet, handwash tray 51, toilets, etc.

In some embodiments, the control valve 43 may be a solenoid valve, a water proportional valve, an electronic switch valve, a manual switch valve, a temperature switch valve, an electric valve, or the like, so long as the on-off of the pipe where the control valve is located can be controlled, so as to be responsible for the connection of the water path, that is, the communication between the hot water pipe 20 and the cold water pipe 30, and is in a closed state when the default standby state and is also in a closed state when the water point 50 is opened. It will be appreciated that the control valve 43 is installed on the water outlet side of the water pump 42, and the control valve 43 may be installed at the water outlet of the water pump 42, or may be installed on a pipeline between the water pump 42 and the cold water pipe 30, so long as the hot water pipe 20 and the cold water pipe 30 can be turned on or off. When the control valve 43 is in a closed state, the water outlet side of the water pump 42 is blocked, so that the communication between the hot water pipe 20 and the cold water pipe 30 can be disconnected; and when the control valve 43 is in an open state, the control valve 43 conducts communication between the hot water pipe 20 and the cold water pipe 30, so that water in the hot water pipe 20 can smoothly flow into the cold water pipe 30.

Further, referring to fig. 2 in combination, in an embodiment of the zero-water chilled water heating system 100 of the present utility model, the water pump system 40 further comprises a main board 44, and the water pump 42 and/or the control valve 43 are communicatively connected to the main board 44.

So configured, the main plate 44 is configured to control the water pump 42 and the control valve 43 to switch from an open state to a closed state to disconnect the hot water pipe 20 from the cold water pipe 30 when the hot water discharged from the water heater 10 reaches a preset temperature or the water heater 10 is turned on for a preset time.

In this embodiment, the main board 44 is provided with a first controller for controlling the water pump 42 and a second controller for controlling the control valve 43, the water pump 42 can be in communication connection with the first controller in a wired or wireless manner so that the first controller can control the water pump 42 to be turned on and off, and likewise, the control valve 43 can be in communication connection with the second controller in a wired or wireless direction so that the second controller can control the control valve 43 to be turned on and off. Specifically, the first controller may control the water pump 42 to be turned on and off by receiving a temperature signal or a time signal, and the second controller may also control the control valve 43 to be turned on and off by receiving a temperature signal or a time signal. It will be appreciated that when the user needs to use hot water, the water pump 42 and the control valve 43 are first in an open state, and the cold water initially retained in the hot water pipe 20 sequentially passes through the water pump system 40 and the cold water pipe 30 to enter the water heater 10 for preheating circulation; when the hot water discharged from the water heater 10 reaches the preset temperature, it indicates that the preheating circulation loop has discharged the hot water reaching the preset temperature, and at this time, the control water pump 42 and the control valve 43 are switched from the open state to the closed state to disconnect the communication between the hot water pipe 20 and the cold water pipe 30, so that the user can achieve the effect of zero cold water consumption after opening the water point 50.

Further, referring to fig. 2 in combination, in an embodiment of the zero-water chilled water heating system 100 of the present utility model, the water pump system 40 further includes a temperature sensor 45, and the temperature sensor 45 is disposed on the connection branch 41 and is communicatively connected to the main board 44.

So set up, when the user needs to use hot water, water pump 42 and control valve 43 are in the open state, open water heater 10, so that water heater 10, hot-water line 20, water pump system 40 and cold water pipe 30 form the preheating circulation loop, the cold water that initially remains in hot-water line 20 will get into the inside of water heater 10 through water pump system 40, cold water pipe 30 in proper order and preheat the circulation, in this process, temperature sensor 45 on connecting branch 41 can monitor the temperature of the rivers that flow through connecting branch 41, when the rivers temperature that the monitoring flows through connecting branch 41 reaches preset temperature, can transmit temperature signal to mainboard 44, at this moment, first controller and the second controller on mainboard 44 will control water pump 42 and control valve 43 respectively and switch to the closed state by the open state, in order to break off the intercommunication of hot-water line 20 and cold water pipe 30, in this way, after the user opens water point 50, can realize zero cold water consumption's effect.

In this embodiment, the preset temperature may be a temperature set at the time of delivery, and the preset temperature may also be a temperature selected and designed according to the actual requirement of the user, which is not limited herein.

In some embodiments, the temperature sensor 45 may be mounted in particular at the water inlet of the connection branch 41, so that the temperature sensor 45 can accurately monitor the temperature of the water flow into the connection branch 41.

Of course, in another embodiment, a timer may be disposed on the main board 44, when the user needs to use hot water, the water pump 42 and the control valve 43 are in an opened state, and the water heater 10 is turned on, so that the water heater 10, the hot water pipe 20, the water pump system 40 and the cold water pipe 30 form a preheating circulation loop, cold water initially remained in the hot water pipe 20 sequentially enters the water heater 10 through the water pump system 40 and the cold water pipe 30 to perform preheating circulation, and when the timer detects that the opening time of the water heater 10 reaches the preset time, the water pump 42 and the control valve 43 are respectively controlled to be switched to a closed state by the first controller and the second controller on the main board 44, so that the communication between the hot water pipe 20 and the cold water pipe 30 is disconnected, and the user can realize the effect of zero cold water consumption after opening the water consumption point 50.

It should be noted that, when the water heater 10 is turned on for a preset time, it may be specifically determined that hot water can be obtained from the water point 50 just after the user turns on the water pump 42 and the control valve 43. That is, when the water heater 10 is turned on with zero cold water usage, if the time for preheating the water heater 10 is less than the preset time, the water flow flowing through the connection branch 41 is still cold water with a temperature lower than the preset temperature, and if the time for preheating the water heater 10 is greater than or equal to the preset time, the water flow flowing through the connection branch 41 is hot water with a temperature higher than the preset temperature. It should be appreciated that the preset time may generally include the time that the water flow passes through the hot water pipe 20 and the cold water pipe 30, and thus, the preset time may be obtained according to the lengths of the hot water pipe 20 and the cold water pipe 30. Thus, when the water heater 10 is in the zero cold water consumption mode, the water pump 42 and the control valve 43 of the water pump system 40 are turned on, the zero cold water consumption is indicated after the preset time is reached, at this time, the water pump 42 and the control valve 43 on the water pump system 40 are turned off, and the effect of zero cold water consumption can be achieved after the water consumption point 50 is turned on.

Further, referring to fig. 2 in combination, in an embodiment of the zero water chiller/heater system 100 of the present utility model, the water pump system 40 further comprises a remote control 46, wherein the remote control 46 is communicatively connected to the main board 44.

So set up, when the user needs to use hot water, the user can press the start button of remote controller 46 to transmit the start signal to mainboard 44, and then control water pump 42 and control valve 43 respectively through first controller and the second controller on mainboard 44 and switch to the open state by the closed state, immediately turn on water heater 10, so that water heater 10, hot water pipe 20, water pump system 40 and cold water pipe 30 form the preheating circulation loop, the cold water that initially remains in hot water pipe 20 will get into inside water heater 10 through water pump system 40, cold water pipe 30 in proper order and preheat the circulation, in this process, temperature sensor 45 on connecting branch 41 can monitor the temperature of rivers that flow through connecting branch 41, when the rivers temperature that monitor and flow through connecting branch 41 reaches the default temperature, can transmit the temperature signal to mainboard 44, at this moment, first controller and second controller on mainboard 44 will control water pump 42 and control valve 43 respectively switch to the closed state by the open state, in order to break off the intercommunication of hot water pipe 20 and cold water pipe 30, in this way, the user opens water point 50 after that can realize zero water consumption effect.

In the practical application process, the remote controller 46 can be in communication connection with the motherboard 44 in a wired or wireless manner, so as to realize signal transmission. Of course, in order to facilitate the user operation, the remote controller 46 can be in communication connection with the main board 44 in a wireless manner, so that the remote controller 46 can be placed at a position where the user is convenient to take, thereby improving the satisfaction degree of the user.

Further, referring to fig. 2 in combination, in an embodiment of the zero water chiller/heater system 100 of the present utility model, the remote control 46 has a reminder 461.

So set up, when the user needs to use hot water, the user can press the start button of remote controller 46 to transmit the start signal to mainboard 44, and then control water pump 42 and control valve 43 respectively through first controller and the second controller on mainboard 44 and switch to the open state by closing state, immediately, start water heater 10, so that water heater 10, hot water pipe 20, water pump system 40 and cold water pipe 30 form the preheating circulation loop, the initially remaining cold water in hot water pipe 20 will get into inside of water heater 10 through water pump system 40, cold water pipe 30 in proper order and preheat the circulation, when the opening preset time of water heater 10 reaches, and/or after temperature sensor 45 detects that the water temperature that flows through connecting branch 41 reaches preset temperature, the reminder 461 on remote controller 46 sends the reminder information in order to wake user that the cold water is used for zero time, simultaneously transmit time signal and/or temperature signal to mainboard 44, at this moment, first controller and second controller on mainboard 44 will control water pump 42 and control valve 43 respectively by switching to the open state to the closed state, so that the cold water pipe 20 and cold water pipe 30 are opened, can realize the effect that the water consumption of water 50 is zero after the user opens.

In the practical application process, the prompter 461 can be a prompting lamp to remind the user of zero cold water consumption time by lighting or changing the light color; the prompter 461 may also be a prompting speaker to alert the user that zero cold water is used by sounding a prompting tone.

In some embodiments, the user may set the running time of the preset circulation loop on the remote controller 46, that is, may set the opening time of the water pump 42 and the control valve 43 on the remote controller 46, when the opening time of the water pump 42 and the control valve 43 reaches the preset time, it indicates that the zero cold water consumption time is reached, and the water pump 42 and the control valve 43 may be automatically controlled to be closed through the main board 44, at this time, the user may realize the effect of zero cold water consumption after opening the water consumption point 50. Specifically, the preset time may be set to 0.1min, 1min, or the like, and is not particularly limited herein.

Further, referring to fig. 2 in combination, in an embodiment of the zero-water chilled water heating system 100 of the present utility model, the water pump system 40 further includes a water flow sensor 47, and the water flow sensor 47 is disposed on the connection branch 41 and is communicatively connected to the main board 44.

So set up, just can monitor the rivers flow through connecting branch 41 through rivers sensor 47, can set for the time of predetermining that carries out the preheating cycle according to the size of rivers flow, for example, when rivers flow is less, can set for the time of predetermining the preheating cycle longer, when rivers flow is great, can set for the time of predetermining the preheating cycle shorter to satisfy when reaching the time of predetermining, the water that discharges from water heater 10 can reach the temperature of predetermining. In addition, the water flow sensor 47 can also be used for monitoring whether water flows through the connection branch 41, when the water flow sensor 47 monitors that water flows through the connection branch 41, a signal is transmitted to the main board 44 to control the water pump 42 and the control valve 43 to work normally through the main board 44, and when the water flow sensor 47 monitors that water does not flow through the connection branch 41, a signal is transmitted to the main board 44 to control the water pump 42 and the control valve 43 to stop working through the main board 44, so that the phenomenon that the water pump 42 idles to influence the service life of the water pump 42 is avoided.

In some embodiments, the water flow sensor 47 may be specifically installed at the water inlet of the connection branch 41, so that the water flow sensor 47 can accurately monitor the water flow through the connection branch 41 and accurately monitor whether the water flow on the connection branch 41 passes through.

Further, referring to fig. 2 in combination, in an embodiment of the zero-water chilled water heating system 100 of the present utility model, the water pump system 40 further includes a housing 48, the connection branch 41 is disposed through the housing 48, and the water pump 42, the control valve 43 and the main board 44 are disposed in the housing 48.

In this way, during the assembly process, the structures such as the water pump 42, the control valve 43, the temperature sensor 45, the water flow sensor 47 and the like can be firstly installed on the connection branch 41, then the connection branch 41 provided with the structures such as the water pump 42, the control valve 43, the temperature sensor 45, the water flow sensor 47 and the like is penetrated on the shell 48, so that the water inlet end and the water outlet end of the connection branch 41 extend out of the shell 48, the water inlet end of the connection branch 41 is conveniently connected with the hot water pipe 20, the water outlet end of the connection branch 41 is conveniently connected with the cold water pipe 30, and the structures such as the water pump 42, the control valve 43, the temperature sensor 45, the water flow sensor 47 and the like can be positioned in the shell 48, and the structures such as the water pump 42, the control valve 43, the temperature sensor 45, the water flow sensor 47 and the like can be protected through the shell 48, so as to prevent impurities such as moisture, dust and the like in the outside from affecting the service life of the structures such as the water pump 42, the control valve 43, the temperature sensor 45, the water flow sensor 47 and the like; meanwhile, by installing the main board 44 in the housing 48, the main board 44 can be protected by the housing 48, so as to prevent the service life of the main board 44 from being affected by moisture, dust and other impurities in the outside.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the zero-cold water heating system 100 of the present utility model, the hot water pipe 20 includes a hot water main 21 and a plurality of hot water branch pipes 22, the hot water main 21 is communicated with the water outlet of the water heater 10, the plurality of hot water branch pipes 22 are connected to the hot water main 21, and each of the hot water branch pipes 22 is connected to one of the water points 50; the cold water pipe 30 comprises a cold water main pipe 31 and a plurality of cold water branch pipes 32, the cold water main pipe 31 is communicated with a water inlet of the water heater 10, the plurality of cold water branch pipes 32 are connected with the cold water main pipe 31, and each cold water branch pipe 32 is connected with one water consumption point 50; the water inlet end of the connection branch 41 is connected to one of the hot water branch pipes 22, and the water outlet end of the connection branch 41 is connected to one of the cold water branch pipes 32.

Since the water pump system 40 is usually installed on the zero cold water and hot water system 100 at a later stage, the hot water main 21 of the hot water pipe 20 is usually pre-buried in a wall, and the cold water main 31 of the cold water pipe 30 is also usually pre-buried in a wall, however, the hot water branch 22 of the hot water pipe 20 is usually exposed to the outside, and the cold water branch 32 of the cold water pipe 30 is also usually exposed to the outside, the water pump system 40 can be conveniently installed at a later stage by connecting the water inlet end of the connecting branch 41 to one of the hot water branch 22 and the water outlet end of the connecting branch 41 to one of the cold water branch 32, and the water pump system 40 does not need to be pre-buried in a wall, thereby facilitating the later maintenance of the water pump system 40.

In the practical application process, the water inlet end and the water outlet end of the connecting branch 41 can be connected with the hot water branch pipe 22 and the cold water branch pipe 32 which are connected with the same water point 50; alternatively, the water inlet end of the connection branch 41 may be connected to the hot water branch 22 connected to one of the water points 50, and the water outlet end of the connection branch 41 may be connected to the cold water branch 32 connected to the other of the water points 50.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the zero-water cold-water hot-water system 100 of the present utility model, the water inlet end and the water outlet end of the connection branch 41 are respectively connected to the hot-water branch 22 and the cold-water branch 32 connected to the same water point 50.

Since the distances between the different water points 50 are generally far, if the water inlet end of the connection branch 41 is connected with the hot water branch pipe 22 connected with one water point 50 and the water outlet end of the connection branch 41 is connected with the cold water branch pipe 32 connected with the other water point 50, the connection branch 41 is longer, the space occupied by the water pump system 40 is larger, the installation cost is increased, and the problem of inconvenience in installation is caused; when the water inlet end and the water outlet end of the connection branch 41 are respectively connected with the hot water branch pipe 22 and the cold water branch pipe 32 connected with the same water point 50, the length of the connection branch 41 is greatly shortened, so that the occupied space of the water pump system 40 is reduced, and the water pump system 40 is convenient to install on the basis of reducing the installation cost.

Further, referring to fig. 1 and 2 in combination, in an embodiment of the zero-water cold-water hot-water system 100 of the present utility model, one of the water points 50 is a hand basin 51, the water pump system 40 is located below the hand basin 51, and the water inlet end and the water outlet end of the connection branch 41 are respectively connected to the hot water branch 22 and the cold water branch 32 connected to the hand basin 51.

Since the position below the hand washing tray 51 is generally empty, by disposing the water pump system 40 below the hand washing tray 51 and connecting the water inlet end and the water outlet end of the connection branch 41 to the hot water branch pipe 22 and the cold water branch pipe 32 connected to the hand washing tray 51, respectively, not only the position below the hand washing tray 51 can be fully utilized, but also the problem that the water pump system 40 is disposed at other exposed positions and the appearance is affected can be avoided.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (10)

1. A zero cold water heating system, comprising:

a water heater;

the hot water pipe is communicated with the water outlet of the water heater and is connected with a plurality of water using points;

the cold water pipes are communicated with the water inlets of the water heater, and a plurality of water consumption points are connected with the cold water pipes;

the water pump system comprises a connecting branch, a water pump and a control valve, wherein the water pump and the control valve are arranged on the connecting branch, the water inlet end of the connecting branch is connected with the hot water pipe, and the water outlet end of the connecting branch is connected with the cold water pipe.

2. The zero cold water and hot water system of claim 1, wherein the water pump system further comprises a main board, the water pump and/or the control valve being communicatively connected to the main board.

3. The zero water chiller-heater system of claim 2 wherein said water pump system further comprises a temperature sensor disposed on said connection leg and communicatively coupled to said main board.

4. The zero cold water heating system of claim 3, wherein the water pump system further comprises a remote control communicatively coupled to the main board.

5. The zero cold water heating system of claim 4, wherein the remote control has a reminder.

6. The zero water chiller-heater system of claim 2 wherein said water pump system further comprises a water flow sensor disposed on said connection leg and communicatively coupled to said main board.

7. The zero water chiller-heater system of claim 2 wherein the water pump system further comprises a housing, the connecting branch is disposed through the housing, and the water pump, the control valve and the main board are disposed within the housing.

8. The zero cold water heating system according to any one of claims 1 to 7, wherein the hot water pipe comprises a main pipe and a plurality of branch pipes, the main pipe is communicated with the water outlet of the water heater, the plurality of branch pipes are connected with the main pipe, and each branch pipe is connected with one water consumption point;

the cold water pipe comprises a cold water main pipe and a plurality of cold water branch pipes, the cold water main pipe is communicated with a water inlet of the water heater, the plurality of cold water branch pipes are connected with the cold water main pipe, and each cold water branch pipe is connected with a water consumption point;

the water inlet end of the connecting branch is connected with one hot water branch pipe, and the water outlet end of the connecting branch is connected with one cold water branch pipe.

9. The zero-water chiller-heater system of claim 8 wherein the water inlet and outlet ends of the connecting legs are connected to hot and cold water manifolds, respectively, that are connected to the same water point.

10. The zero cold water heating system of claim 9, wherein one of the water points is a hand washing tray, the water pump system is located below the hand washing tray, and the water inlet end and the water outlet end of the connecting branch are respectively connected with a hot water branch pipe and a cold water branch pipe connected with the hand washing tray.