CN220109697U - Combined supply system - Google Patents

Abstract

The utility model discloses a co-supply system, which comprises: a cleaning machine provided with a water inlet and a water outlet; a water heating device provided with a water inlet and a water outlet; a combined supply pipeline arranged between the cleaning machine and the hot water device; at least the water outlet of the water heating device can be connected with the water inlet of the cleaning machine through the combined supply pipeline; a temperature detection unit for detecting a temperature of water supplied to the washer by the water heating device; and the controller is in communication connection with the temperature detection unit, the cleaning machine and the water heating device. The combined supply system provided by the utility model has the advantages that the cleaning effect is better, the total cleaning time is shortened, and the use experience of a user is improved.

Description

Combined supply system

Technical Field

The utility model relates to the technical field of interconnection of various electric appliances, in particular to a combined supply system.

Background

A dishwasher is an apparatus for automatically washing dishes. The dish washing machine can greatly reduce tedious manual labor, is simple and convenient to operate and high in automation degree, so that the dish washing machine is favored by more and more consumers.

At present, the washing water used for washing a dish washer is tap water at normal temperature, and also water which reaches a certain temperature after being heated. The applicant found after comparing the cleaning effect based on different water temperature conditions: the washing effect of the dishwasher is positively correlated with the temperature of the water being washed over a range of temperatures. Generally, the effect of direct washing with tap water at normal temperature is inferior to that of washing with heated water.

In order to ensure that the dishwasher has a better cleaning effect, the water for washing can be raised to a certain temperature. However, the applicant found the following problems:

if the water to be washed is heated by the heating function of the existing dish washer, the washing time of the dish washer can be prolonged.

If the external heat source is used to directly supply hot water to the dish washer, the water inflow required for one washing of the dish washer is about 3 liters, and when the water inflow is 2.5L/min, the water inflow time of the dish washer is usually about 1 minute. In this short water intake time, the water reaching the inside of the dishwasher is usually cold water in the heat source-to-dishwasher line, while all or most of the hot water provided by the hot water device has not reached the dishwasher, which results in a substantial increase in the temperature of the water for washing the dishwasher and thus in a substantial improvement in the washing effect.

Disclosure of Invention

In order to overcome at least one defect of the prior art, the utility model provides a combined supply system which can ensure that a cleaning machine has a better cleaning effect in a shorter cleaning time and improve the use experience of a user.

The specific technical scheme of the embodiment of the utility model is as follows:

A co-feed system, the co-feed system comprising: a cleaning machine provided with a water inlet and a water outlet; a water heating device provided with a water inlet and a water outlet; a combined supply pipeline arranged between the cleaning machine and the hot water device; at least the water outlet of the water heating device can be connected with the water inlet of the cleaning machine through the combined supply pipeline; a temperature detection unit for detecting a temperature of water supplied to the washer by the water heating device; and the controller is in communication connection with the temperature detection unit, the cleaning machine and the water heating device.

In a preferred embodiment, the washing machine includes a receiving part for receiving water supplied from the water heating device, the receiving part being connected to the water outlet, and the water in the receiving part being discharged through the water outlet when the water temperature detected by the temperature detecting unit is lower than a set washing temperature.

In a preferred embodiment, the cleaning machine further comprisesDraining pumpThe drainage pump is communicated with the containing part and the drainage outlet, the drainage pump is started, and water in the containing part is drained through the drainage outlet.

In a preferred embodiment, the combined supply pipeline is also provided with Water inlet valveThe water inlet valve is in communication connection with the controller, and when the controller receives a water demand signal, the water inlet valve communicates the water outlet of the water heating device with the water inlet of the cleaning machine.

In a preferred embodiment, the water inlet of the water heating device is connected with the water inlet of the cleaning machine through the combined supply pipeline, a switching device and a water pump which are in communication connection with the controller are arranged in the combined supply pipeline, the switching device comprises a first state and a second state, and when the switching device is in the first state, the water heating device can be matched with at least part of the combined supply pipeline to form a first circulating waterway; when the switching device is in the second state, the water outlet of the water heating device is communicated with the water inlet of the cleaning machine, and the water heating device supplies water to the cleaning machine.

In a preferred embodiment, the water inlet can be communicated with a water return pipeline, the water outlet can be communicated with a hot water pipeline, and the hot water device can be matched with the water return pipeline and the hot water pipeline to form a second circulating waterway.

In a preferred embodiment, the combined supply line is partially shared with the return line near the water inlet and the combined supply line is partially shared with the hot water line near the water outlet.

In a preferred embodiment, the water return line is a cold water line connected to the water inlet.

In a preferred embodiment, the switching device comprises any one or a combination of the following: a switching valve, a combination of at least two valves.

In a preferred embodiment, the switching device is arranged in the washing machine, or the switching device is distributed in the washing machine and the combined supply line, or the switching device is arranged in the combined supply line.

In a preferred embodiment, the switching device is a three-way switching valve, the three-way switching valve comprises a first interface, a second interface and a third interface, the first interface and the second interface are respectively connected with the combined supply pipeline, and the third interface is connected with the water inlet;

when the three-way switching valve is in the first state, the first interface is communicated with the second interface, and the water heating device and the combined supply pipeline are matched to form the first circulating waterway;

when the three-way switching valve is in the second state, the second interface is communicated with the third interface, and the water outlet of the water heating device is communicated with the water inlet of the cleaning machine.

In a preferred embodiment, the combined supply pipeline comprises a first pipe section and a second pipe section, one end of the first pipe section is connected to the hot water pipeline, the other end of the first pipe section is connected to the second connector, one end of the second pipe section is connected to the water return pipeline, and the other end of the second pipe section is connected to the first connector.

In a preferred embodiment, the co-supply system further includes a temperature controller for detecting a water temperature in the first circulation water path, and the switching device is switched from the first state to the second state when the temperature detected by the temperature controller reaches a target water temperature.

In a preferred embodiment, the thermostat is arranged in at least one of the following positions: and the position close to the water inlet of the water heating device is in the switching device.

In a preferred embodiment, the cleaning machine comprises a heating unit and a containing part for receiving water supplied by the water heating device, wherein the heating unit can heat the water in the containing part to the set cleaning temperature when the water temperature detected by the temperature detection unit is lower than the set cleaning temperature.

In a preferred embodiment, the washer is provided with a soft water module; and/or the water heating device is provided with a soft water module; and/or the combined supply system is provided with a soft water module, and the soft water module is arranged in the combined supply pipeline.

In a preferred embodiment, the controller is provided in the washer; alternatively, the controller is provided in the water heating device; alternatively, the controller is independently provided; or, the controller is arranged at the cloud end, and the water heating device and the cleaning machine are provided with communication modules.

In a preferred embodiment, the water pump is disposed at any of the following positions: the water heater, the cleaning machine and the combined supply pipeline.

In a preferred embodiment, the switching device is arranged in the cleaning machine and controlled by the cleaning machine, and the water pump is arranged in the water heating device and controlled by the water heating device.

In a preferred embodiment, the cleaning machine comprises any one of the following: dish washer and washing machine.

The technical scheme of the utility model has the following remarkable beneficial effects:

the utility model provides a combined supply system, which mainly comprises: when the combined supply system provided by the utility model is used for working, the hot water provided by the hot water device is utilized to discharge the cold water section of the combined supply pipeline between the hot water device and the cleaning machine before the cleaning machine is used for water inflow, so that the water temperature supplied to the cleaning machine is improved; or before the water heater supplies water to the cleaning machine, the water heater and at least part of the combined supply pipeline can be matched to form a first circulating water path, the water temperature in the pipeline is improved by utilizing the heating function of the water heater, and the water heated by the water heater can enter the cleaning machine through part of the first circulating water path, so that the length of a cold water section between the water heater and the cleaning machine is shortened, the water temperature supplied to the cleaning machine is improved, and the cleaning machine can be ensured to have a better cleaning effect in a shorter cleaning time.

Specific embodiments of the utility model are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not limited in scope thereby. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present utility model, and are not particularly limited. Those skilled in the art with access to the teachings of the present utility model can select a variety of possible shapes and scale sizes to practice the present utility model as the case may be.

Fig. 1 is a schematic structural diagram of a first co-generation system according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a second co-generation system according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a third co-generation system according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a fourth co-generation system according to an embodiment of the present application;

FIG. 5 is a schematic structural diagram of a fourth co-generation system according to an embodiment of the present application;

reference numerals of the above drawings:

1. a cleaning machine; 10. a water inlet; 11. a water cup; 12. a washing pump; 13. a water outlet; 14. a draining pump; 15. a spray arm;

2. a water heating device; 21. a water inlet; 22. a water outlet; 23. a water return line; 24. a hot water pipeline; 25. constant pressure water return valve;

3. a joint supply pipeline; 31. a first pipe section; 32. a second pipe section; 310. a first three-way joint; 320. a second three-way joint;

30. a three-way switching valve; 301. a first interface; 302. a second interface; 303. a third interface;

35. a water inlet valve;

36. a preheating valve;

4. a water pump;

51. a first temperature sensor;

52. a second temperature sensor;

53. a flow rate detecting member;

54. a temperature detection unit;

6. A soft water module;

7. and (3) a water source.

Detailed Description

The technical solution of the present utility model will be described in detail below with reference to the accompanying drawings and the specific embodiments, it should be understood that these embodiments are only for illustrating the present utility model and not for limiting the scope of the present utility model, and various modifications of equivalent forms of the present utility model will fall within the scope of the appended claims after reading the present utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The utility model provides a combined supply system which can ensure that a cleaning machine has a better cleaning effect, shorten the total cleaning time and improve the use experience of a user.

Referring to fig. 1 to 5, in an embodiment of the present utility model, a co-generation system is provided, which may mainly include: a cleaning machine 1 and a water heating device 2. The cleaning machine 1 and the water heating device 2 are connected through a pipeline.

The cleaning machine 1 may be a dishwasher for cleaning objects to be cleaned such as tableware, kitchen ware, etc., the tableware may include bowls, plates, dishes, chopsticks, etc., and the kitchen ware may include pans, basins, etc. In addition to this, the washing machine 1 may also be used for washing other kinds of articles, for example, when the washing machine 1 is used for washing laundry, it may correspond to a washing machine. In the embodiment of the present disclosure, the washing machine 1 is mainly described by way of example with reference to a dishwasher, and other similar application scenarios may be referred to in the present disclosure, and the disclosure will not be described in detail here.

The washing machine 1 is provided with a water inlet 10, through which water supplied from the outside is supplied into the washing machine 1, so that washing water is supplied to the washing machine 1. In general, the washing machine 1 is further provided with a water cup 11, a washing pump 12, a shower arm 15, a drain pump 14, a drain port 13, and the like. The washing machine 1 generally comprises a plurality of washing modes, for example: pre-wash mode, power wash mode, energy saving wash mode, etc. When the washing machine 1 enters a certain washing mode, water with a preset water quantity can be supplied into the water cup 11 through the water inlet 10; the washing pump 12 is started, and the washing pump 12 drives water in the water cup 11 into the spray arm 15, and then the water is sprayed to the object to be washed by the spray arm 15, so that the object to be washed is washed. The cleaned water is collected again into the water cup 11 under the action of gravity, so that the water is reused. When one of the washing modes is completed, the drain pump 14 may be activated to drain the water from the cup 11 and finally through the drain port 13.

The water heating device 2 may be a device capable of outputting hot water to the outside. Specifically, the water heating device 2 may be any one of the following: gas water heater, hanging stove, heat pump water heater, electric water heater, solar water heater, etc. Of course, the specific form of the water heating device 2 is not excluded from the other forms in the prior art, and the present application is not limited thereto. In the embodiment of the present specification, the water heater 2 is mainly described by taking a gas water heater as an example, and other similar application scenarios can be referred to in the present specification, and the present application will not be described in detail here.

The water heating device 2 is provided with a water inlet 21 and a water outlet 22. The water inlet 21 and the water outlet 22 are used for communicating with an external water source 7, a water supply end and the like through a pipeline.

Referring to fig. 1 to 4, in some embodiments, the water inlet 21 and the water outlet 22 of the water heating device 2 are connected to the water inlet 10 of the cleaning machine 1 through a co-feeding pipe. Correspondingly, the combined supply system can also comprise a switching device, a water pump 4 and a controller which can be in communication connection with the cleaning machine 1, the hot water device 2, the water pump 4 and the switching device. The switching device comprises a first state and a second state, and when the switching device is in the first state, the water heating device 2 can be matched with at least part of the combined supply pipeline to form a first circulating waterway; when the switching device is in the second state, the water outlet 22 of the water heating device 2 is communicated with the water inlet 10 of the cleaning machine 1, and the water heating device 2 supplies water to the cleaning machine 1.

When the switching device is in the first state, the water heating device 2 and the combined supply pipeline are matched to form a first circulating water path, and after the water heating device 2 and the water pump 4 are started, water in the first circulating water path can be heated to a preset temperature by the water heating device 2 under the driving of the water pump 4. Subsequently, when the washing machine 1 needs to be started for a washing operation, the state of the switching device can be switched from the first state to the second state, and the water outlet 22 of the hot water device 2 is communicated with the water inlet 10 of the washing machine 1 by using the switching device, so that the hot water device 2 provides water with a predetermined temperature to the washing machine 1. Because before the water heater 2 supplies water to the cleaner 1, the water heater 2 and at least part of the combined supply pipeline can be matched to form a first circulating water path, the water temperature in the pipeline is improved by utilizing the heating function of the water heater 2, and the water heated by the water heater 2 can enter the cleaner 1 through part of the first circulating water path, which is equivalent to shortening the length of a cold water section between the water heater 2 and the cleaner 1, and improving the water temperature supplied to the cleaner 1, thereby ensuring that the cleaner 1 has better cleaning effect in a shorter cleaning time.

Wherein, the preset temperature required to reach the water temperature in the first circulating water path can be set by a user (namely, the preset temperature is the target water temperature set by the user).

Alternatively, the predetermined temperature may be a temperature separately set based on the cleaning water temperature required for the cleaning machine 1, and the predetermined temperature may be set at the time of shipment of the cleaning machine 1 and stored in the controller.

Alternatively, the predetermined temperature may be a temperature determined based on a required washing water temperature of the washing machine 1 in combination with heat loss of the pipe line between the hot water device 2 and the washing machine 1. When the predetermined temperature is a temperature determined based on a required washing water temperature of the washing machine 1 in combination with heat loss of the pipe between the hot water apparatus 2 and the washing machine 1, the predetermined temperature is a sum of the washing water temperature and a pipe loss temperature difference.

Wherein the water pump 4 is used for providing driving force for water flow. The water pump 4 may be disposed at any position of the first circulation water path. Specifically, the water pump 4 may be integrally provided in the water heating device 2, may be provided in a combined supply line, or may be provided in a washer. For example, when the water heating device 2 is a zero cold water type water heater, the water pump 4 is arranged inside the water heating device 2, and the water pump 4 can be utilized by the water pump 4 arranged inside the water heating device 2 without additional arrangement.

The switching device has a plurality of different states, and when the switching device switches between the different states, the switching device can be used for changing the communication relationship between the pipelines, and by changing the communication relationship between the pipelines, the switching device can be used for switching the communication relationship between the water inlet 21, the water outlet 22 of the water heating device 2 and the water inlet 10 of the cleaning machine 1.

The controller can be in communication connection with the cleaning machine 1, the water heating device 2, the water pump 4 and the switching device, and can directly or indirectly control various components in the combined supply system according to the acquired signals. Specifically, the controller may be provided in the washing machine 1; alternatively, the controller may be provided in the water heating device 2; alternatively, the controllers may be independently provided; alternatively, the controller may be disposed at a cloud end, and the water heating device 2 and the cleaning machine 1 are provided with communication modules.

When the controller is provided in the washing machine 1, the controller may be provided integrally in the controller of the washing machine 1 itself, for example on a control chip of the washing machine 1. The controller may communicate with the water heating device 2 by wired or wireless means. For example, when the controller communicates with the water heating device 2 in a wireless manner, the water heating device 2 may be provided with a communication module, and the controller is communicated with the communication module, so as to receive a control signal sent by the controller, or feedback a current state signal of the water heating device 2 to the controller.

When the controller is provided in the water heating device 2, the controller may be provided integrally in the controller of the water heating device 2 itself, for example on a control chip of the water heating device 2. The controller may communicate with the washing machine 1 by wired or wireless means. For example, when the controller communicates with the cleaning machine 1 in a wireless manner, the cleaning machine 1 may be provided with a communication module, and the controller may be communicated with the communication module, so as to receive a control signal sent by the controller, or feedback a status signal of the current cleaning machine 1 to the controller.

When the controller is provided independently, the controller can establish communication connection with the washing machine 1 and the hot water apparatus 2 respectively by wired or wireless means. For example, the controller may be a PLC controller provided independently to the washing machine 1 and the water heating apparatus 2, and of course, the specific form of the controller is not limited to the above example, and the present application is not limited thereto. In addition, the installation position of the controller can be flexibly set according to the installation environment of the user, and the application is not particularly limited herein.

When the controller is arranged at the cloud, the cloud can store a control program for controlling the operation of the hot water device 2 and the cleaning machine 1, the hot water device 2 and the cleaning machine 1 are provided with a communication module, and the hot water device 2 and the cleaning machine 1 can respectively establish communication connection with the controller positioned at the cloud by using the communication module, so that a control signal sent by the cloud controller is received, or a current state signal is fed back to the cloud controller.

In some embodiments, for the water heater 2 with the zero cold water function, the water inlet 21 of the water heater 2 can be further communicated with the water return pipeline 23, the water outlet 22 can be further communicated with the hot water pipeline 24, and the water heater 2 can be matched with the water return pipeline 23 and the hot water pipeline 24 to form a second circulating water path.

When the water heating device 2, the water return pipeline 23 and the hot water pipeline 24 are matched to form a second circulating water path, namely the water heating device 2 has a zero cold water function. When the user turns on the water terminal for water, the water heating device 2 with the zero cold water function can immediately supply water with proper temperature to the user without emptying the cold water section in the pipeline.

Specifically, for the water heating device 2 with the zero cold water function, besides the heating module, a water pump 4 is generally arranged in the water heating device, and after the water pump 4 is started, a driving force can be provided for water flow in the second circulating waterway. The water in the second circulation waterway may be heated while passing through the heating module of the water heating device 2, so that the water in the second circulation waterway is maintained above a predetermined temperature.

For example, when the water heater 2 with the zero cold water function is not in use by a user, the water return pipeline 23 and the hot water pipeline 24 can be connected by the constant pressure water return valve 25, and the water in the second circulating water path can circulate in the hot water pipeline 24, the water return pipeline 23 and the water heater 2 under the driving of the water pump 4, and the water is heated by the heating module when flowing through the heating module until the proper water temperature is reached.

In this description, the constant pressure water return valve 25 is mainly used as an example for illustration, and other control valves can be used for analogy reference, so that the application is not described here one by one.

In this embodiment, the second circulation water path and the first circulation water path of the co-generation system may be turned on at the same time, or alternatively turned on.

For example, in the case where the second circulation water path is in the conductive state, the first circulation water path is in the non-conductive state when the user does not use the demand of the washer 1, that is, the water demand signal on the washer 1 side is not recognized.

If the user has a need to use the washing machine 1, that is, the water demand signal on the washing machine 1 side is recognized, the first circulation water path may be turned on by the switching device if the second circulation water path is in the on state. Generally, most of water can be automatically split into the first circulation pipeline because the pipe resistance of the first circulation pipeline is smaller than that of the second circulation pipeline.

If the user has a need to use the washing machine 1 when the second circulation waterway is in a conductive state, that is, a water demand signal on the side of the washing machine 1 is recognized, the constant-pressure water return valve 25 may be controlled to be in a disconnected state so that the second circulation waterway is in a non-conductive state, and the first circulation waterway is conducted through the switching device. In addition, when the other water terminal side has a need to use hot water and the cleaner 1 side has no need to use, the first circulation water path and the second circulation water path may be both non-conductive.

Further, the combined supply pipeline is partially shared with the water return pipeline 23 near the water inlet 21, and the combined supply pipeline is partially shared with the hot water pipeline 24 near the water outlet 22.

When the water heating device 2 is a water heating device 2 with a zero cold water function, the water return line 23 may be a cold water line connected to the water inlet 21. A water source 7 (tap water access point) may be connected to the cold water pipe, and when water is required by the user, the water source 7 may be connected to supply water to the hot water apparatus 2.

For the water heating device 2 with the zero cold water function, the water heating device 2 can be matched with the water return pipeline 23 and the hot water pipeline 24 to form a second circulating waterway. When the water heating device 2 and the combined supply pipeline are matched to form a first circulating waterway, the combined supply pipeline can use part of the water return pipeline 23 and the hot water pipeline 24.

Specifically, a first three-way connection 310 may be provided in the hot water line 24 and a second three-way connection 320 may be provided in the return line 23. When the water inlet 21 and the water outlet 22 of the water heating device 2 are connected with the water inlet 10 of the cleaning machine 1 through the joint supply pipeline, one end of one pipeline can be connected to the first three-way joint 310, and the other end is connected with the switching device; one end of a pipeline is connected to the second three-way joint 320, and the other end is connected to the switching device. In addition, the specific arrangement and connection of the co-feed line may be different depending on the type of the switching device, the installation position, etc.

In some embodiments, the switching device may include any one or a combination of the following: a switching valve, a combination of at least two valves. That is, the switching device may be embodied as an integrated structure, or may be a combination of a plurality of valves.

The location of the switching device may vary depending on the particular form thereof, the composition of the components within the cleaning machine 1, etc. In particular, the switching device may be disposed within the washing machine 1, or the switching device may be distributed in the washing machine 1 and the co-feed line, or the switching device may be disposed in the co-feed line.

When the switching device is provided in the washing machine 1, that is, when the switching device is provided inside the washing machine 1, the switching device can be utilized by the switching device inside the washing machine 1 without additional provision. For example, the switching device may be a switching valve arranged close to the water inlet 10 of the washing machine 1.

The switching device can also be arranged in the co-feed line. When the switching device is arranged in the combined supply pipeline, the switching device is arranged close to the water inlet 10 of the cleaning machine 1, so that the pipeline length between the switching device and the cleaning machine 1 is shortened as much as possible, and the length of a cold water section between the hot water device 2 and the cleaning machine 1 is short when the hot water device 2 supplies water after circulating heating to the cleaning machine 1 is ensured.

Furthermore, the switching device can also be distributed in the washing machine 1 and in the co-feed line, i.e. one part is located in the washing machine 1 and the other part is located in the co-feed line.

As shown in fig. 1 or fig. 2, in a specific embodiment, when the switching device is in the form of a switching valve, the switching device may specifically be a three-way switching valve 30, where the three-way switching valve 30 includes a first interface 301, a second interface 302, and a third interface 303, where the first interface 301 and the second interface 302 are respectively connected to the co-supply pipe, and the third interface 303 is connected to the water inlet 10. When the three-way switching valve 30 is in the first state, the first interface 301 and the second interface 302 are communicated, and the water heating device 2 and the combined supply pipeline are matched to form the first circulating waterway; when the three-way switching valve 30 is in the second state, the second port 302 is communicated with the third port 303, and the water outlet 22 of the water heating device 2 is communicated with the water inlet 10 of the cleaning machine 1.

In this embodiment, when the switching device is a three-way switching valve 30, the three-way switching valve 30 may be in the form of a stepless electric water valve, and of course, the three-way switching valve 30 may be in the form of another valve, and the form of the three-way switching valve 30 is not specifically limited herein. Taking an electric water valve as an example, the three-way switching valve 30 may be provided with a valve body and a valve core, wherein the first interface 301, the second interface 302 and the third interface 303 are arranged on the valve body, and the interfaces and the communication relationship between the interfaces can be changed by rotating the valve core.

The three-way switching valve 30 can be in communication with a controller to adaptively change the position of the valve spool in response to a control signal from the controller. When the valve core is in the first position, the first connector 301 and the second connector 302 are communicated, the water heating device 2 and at least part of the combined supply pipeline can be matched to form a first circulating water path, and water in the first circulating water path can be repeatedly heated when flowing through the heating module of the water heating device 2. When the valve core is in the second position, the second port 302 is communicated with the third port 303, the water outlet 22 of the water heating device 2 is communicated with the water inlet 10 of the cleaning machine 1, and the water heated to a preset temperature in the first circulating water path formed in the first state can be guided to the cleaning machine 1.

In the embodiments of the specification, when the form and position of the switching device are different, the specific composition and connection of the co-supply pipeline can also be adaptively adjusted.

As shown in fig. 1 or fig. 2, when the switching device is a switching valve, the combined supply pipe may include a first pipe section 31 and a second pipe section 32, wherein one end of the first pipe section 31 is connected to the hot water pipe 24, the other end is connected to the second port 302, one end of the second pipe section 32 is connected to the water return pipe 23, and the other end is connected to the first port 301.

As shown in fig. 1, the combined supply line may comprise a first pipe section 31 and a second pipe section 32 when the switching valve is arranged inside the washing machine 1. A first three-way connection 310 can be provided in the hot water line 24, one end of the first pipe section 31 being connectable to the hot water line 24 via the first three-way connection 310; the other end of the first pipe section 31 may be connected to a second port 302 of the switching valve. A second three-way connection 320 can be provided in the return line 23, via which second three-way connection 320 one end of the second pipe section 32 can be connected to the return line 23; the other end of the second pipe section 32 may be connected to a first port 301 of the switching valve.

As shown in fig. 2, when the switching valve is provided outside the washing machine 1, the joint supply line may include a first pipe section 31 and a second pipe section 32. Referring to fig. 1, a first three-way joint 310 may be provided in the hot water pipe 24, and one end of the first pipe section 31 may be connected into the hot water pipe 24 through the first three-way joint 310; the other end of the first pipe section 31 may be connected to a second port 302 of the switching valve. A second three-way connection 320 can be provided in the return line 23, via which second three-way connection 320 one end of the second pipe section 32 can be connected to the return line 23; the other end of the second pipe section 32 may be connected to a first port 301 of the switching valve.

The combined supply line may furthermore comprise a third pipe section, which is arranged between the third connection 303 of the switching valve and the washing machine 1. The length of the third pipe section may be determined according to the distance from the switching valve to the washing machine 1, and the present application is not particularly limited herein. In theory, the third pipe section may also be omitted when the third interface 303 of the switching valve directly interfaces with the washing machine 1.

In a specific embodiment, as shown in fig. 3 or 4, the switching device may comprise a first valve and a second valve when the switching device is in the form of a combination of two valves. Wherein the first valve may be a water inlet valve 35 for controlling the communication of the washer 1 with an external water supply. The second valve may be a pre-heat valve 36 for controlling the on-off relationship of the first circulation water path. The inlet valve 35 may be in the form of a two-way valve and the preheating valve 36 may be in the form of a two-way valve. In addition, the preheating valve 36 may be a one-way valve, and when the preheating valve 36 is a one-way valve, the water is conducted in one direction from the water outlet 22 to the water inlet 21 of the water heating device 2 in the water flow direction.

Specifically, as shown in fig. 3, the water inlet valve 35 may be integrally provided inside the washing machine 1; the pre-heating valve 36 may be arranged between the hot water line 24 and the return line 23. Specifically, when the water heating device 2 is a water heating device 2 with a zero cold water function, a four-way joint may be disposed on the hot water pipeline 24, a three-way joint may be disposed on the water return pipeline 23, and a joint supply pipeline may be disposed between the four-way joint and the three-way joint. The preheat valve 36 may be disposed in the co-feed line.

As shown in fig. 4, the water inlet valve 35 may be disposed in the joint supply line between the water inlet 10 and the first circulation waterway; the pre-heating valve 36 may be arranged between the hot water line 24 and the return line 23. Specifically, a four-way joint may be disposed on the hot water pipe 24, a three-way joint may be disposed on the return pipe 23, and a joint supply pipe may be disposed between the four-way joint and the three-way joint. The preheat valve 36 may be disposed in the co-feed line. A joint supply line is provided between the four-way connection and the washing machine 1, and the water inlet valve 35 may be provided in the joint supply line between the four-way connection and the washing machine 1.

Taking the preheating valve 36 and the water inlet valve 35 as two-position two-way valves as examples, the preheating valve 36 is opened/closed to connect/disconnect the first circulation water path. The water inlet valve 35 is opened/closed for controlling the connection/disconnection between the washing machine 1 and the water heating device 2.

In the embodiment of the present specification, the state of the switching device is switched mainly according to the water temperature in the first circulation water path. In one embodiment, the co-supply system may further include a first temperature sensor 51 for detecting a water temperature in the first circulation water path, and the switching device may switch from the first state to the second state when the temperature detected by the first temperature sensor 51 reaches a target water temperature.

In the present embodiment, the first temperature sensor 51 is mainly used for detecting the water temperature in the first circulation water path, and when the first temperature sensor 51 detects that the current water temperature in the first circulation water path reaches the target water temperature, it means that the water heating device 2 can supply water with a sufficiently high temperature to the cleaning machine 1 for cleaning at this time, and at this time, the switching device can be switched from the first state to the second state. When the switching device is in a first state, a first circulating water path can be formed; when the switching device is in the second state, the water outlet 22 of the water heating device 2 can be connected to the water inlet 10 of the washing machine 1.

Wherein the first temperature sensor 51 is disposed at least one of the following positions: near the water inlet 21 of the water heating device 2, in the switching device.

When the first temperature sensor 51 is disposed near the water inlet 21 of the water heater 2, the first temperature sensor 51 can obtain the water temperature (i.e., the return water temperature) of the first circulation water path other than the water heater 2 returned to the water heater 2 at the first time, thereby more accurately obtaining the water temperature that can be supplied to the cleaner 1.

When the water heating device 2 is a water heating device 2 with zero cold water function, a temperature controller is also disposed at the water inlet 21 (i.e. water return), and the first temperature sensor 51 can utilize the temperature controller of the water heating device 2 without additional arrangement.

In addition, the first temperature sensor 51 may be provided in the switching device, and in particular, in the case where the switching device is provided close to the washing machine 1 or directly in the washing machine 1, the water temperature supplied to the washing machine 1 can be accurately detected when the first temperature sensor 51 is provided on the switching device.

Of course, the first temperature sensor 51 is not limited to the above-mentioned installation position, and may be installed at another position in the first circulation water path, as long as it directly or indirectly reflects the water temperature supplied to the washing machine 1 by the current hot water apparatus 2.

In one embodiment, the washing machine 1 is provided with a water cup 11, a second temperature sensor 52 for detecting the temperature of water in the water cup 11, and a heating unit capable of heating water in the water cup 11 to a set washing temperature when the temperature detected by the second temperature sensor 52 is lower than the set washing temperature.

In the present embodiment, the cleaning machine 1 may be provided with a cup 11, and the cup 11 is used for receiving water for cleaning. The washing machine 1 may also be provided with a second temperature sensor 52, which second temperature sensor 52 may be used to detect the temperature of the water in the water cup 11. Furthermore, the washing machine 1 may be provided with a heating unit, which may be provided in particular at any position in the washing circuit of the washing machine 1.

Specifically, the cleaning circuit of the cleaning machine 1 includes: the water cup 11, the washing pump 12, the spray arm 15 and the communication pipeline connected between the water cup 11 and the washing pump 12 and between the washing pump 12 and the spray arm 15. The heating unit may be provided in any or a combination of the following: a water cup 11, a washing pump 12, a spray arm 15 and a communication pipeline.

When the second temperature sensor 52 detects that the current water temperature in the water cup 11 is lower than the set washing temperature, the heating unit may be activated to heat the water in the water cup 11 to the set washing temperature.

In this embodiment, taking the heating unit integrally disposed in the water cup 11 as an example, when the second temperature sensor 52 detects that the current water temperature in the water cup 11 is lower than the set cleaning temperature, the heating unit may be started first, the water in the water cup 11 is heated to the set cleaning temperature, and then the washing pump 12 and the spray arm 15 are started to perform cleaning operation; alternatively, the washing pump 12 and the shower arm 15 may be activated to perform the cleaning operation simultaneously with the activation of the heating means.

Wherein the set washing temperature may be stored in a program inside the washing machine 1. For the washing machine 1, it may comprise a plurality of washing modes, such as: strong washing, quick washing, energy-saving washing, etc. In each cleaning mode, different cleaning time, cleaning water temperature and the like can be correspondingly stored. Of course, the set cleaning temperature can also be set and modified by a user according to the requirements. For example, when a user is washing certain heavy oil heavy dirty dishes, he may set the set washing temperature higher.

In one embodiment, the combined supply system is further provided with a flow detection member 53 for detecting the amount of water entering the washing machine 1, and a washing pump 12 in communication with the water cup 11, and the washing pump 12 is started after the amount of water currently entering the washing machine 1 reaches a preset amount of water based on a flow signal detected by the flow detection member 53.

In the present embodiment, the cleaning machine 1 is generally provided with a wash pump 12 in communication with the water cup 11, and the wash pump 12 is configured to drive water in the water cup 11 into the shower arm 15 to spray the water toward the object to be cleaned. The co-feed system may also be provided with a flow detector 53, which flow detector 53 is used to detect the amount of water entering the washing machine 1. When the flow signal detected by the flow detecting member 53 indicates that the current water amount entering the cleaning machine 1 reaches the preset water amount, the cleaning pump 12 is started again to drive the spray arm 15 to rotate, so as to spray and clean the cleaned object. The preset water amount may be about 3 liters, and of course, the preset water amount may be differently set according to the specific model of the cleaning machine 1, and the present application is not limited thereto.

Furthermore, the way of measuring the amount of water entering the washing machine 1 is not limited to the above examples, but it can also be realized in other ways. For example, a level gauge may be provided in the cup 11, with which the current water volume of the cup 11 is measured, or in case the flow in the line is constant, the water volume entering the cup 11 of the washing machine 1 may be determined from the time signal.

In one embodiment, the cleaning machine 1 is provided with a water outlet 13 and a water cup 11, a second temperature sensor 52 for detecting the temperature of water in the water cup 11, the water outlet 13 is communicated with the water cup 11, and when the temperature detected by the second temperature sensor 52 is lower than the set cleaning temperature, the water supplied by the water heater 2 is discharged through the water outlet 13.

Generally, the cleaning machine 1 is provided with a cup 11, and the cup 11 is used for receiving cleaning water. Further, the washing machine 1 is provided with a drain opening 13 and a drain pump 14. The water outlet 13 communicates with the water cup 11. The drain pump 14 is activated to drain the washing water for washing the water cup 11. The washing machine 1 may be further provided with a second temperature sensor 52 for detecting the temperature of the water in the water cup 11. When the temperature detected by the second temperature sensor 52 is lower than the set washing temperature, the drain pump 14 may be activated, and the water supplied from the water heating device 2 is discharged through the drain port 13. When the temperature detected by the second temperature sensor 52 reaches the set cleaning temperature, the cleaning pump 12 is started again to formally enter the cleaning operation, so that the cleaning water temperature is ensured to reach the set cleaning temperature.

After formally entering the cleaning operation, the drain pump 14 may be turned off. If the temperature detected by the second temperature sensor 52 is lower than the set washing temperature during the main washing, the washing water temperature may be raised by activating the heating unit, and the drain pump 14 may be maintained in a closed state. In the above-mentioned flow of detecting that the water temperature in the water cup has not reached the set cleaning temperature and draining by the drain pump 14 is mainly in the water supply stage before the main cleaning, if the cleaning operation is performed, the cleaning water temperature can be raised by the heating unit to control the drain pump 14 to be in the off state so as to ensure that the cleaning operation is not interrupted accidentally.

In a specific scenario, when the set washing temperature is higher than the target water temperature in the first circulation water path; alternatively, the water provided in the first circulation water path loses heat during the process of supplying the water to the water cup 11 of the cleaning machine 1, and when the water temperature is reduced, the water with the temperature lower than the set cleaning temperature can be discharged through the water outlet 13, so as to ensure that the water temperature for cleaning can reach the set cleaning temperature.

When the water heater 2 is a water storage type water heater, the highest water temperature which can be provided by the water storage type water heater to the cleaning machine 1 is possibly lower than the set cleaning temperature required by the cleaning machine, at this time, the water of the water storage type water heater can be utilized to firstly discharge the cold water section in the pipeline between the water heater 2 and the cleaning machine 1, and then the cleaning machine 1 is supplied with hot water with stable water temperature. After the cup of the cleaning machine 1 receives the hot water with the stable water temperature, the water temperature can be further increased by the heating unit so as to reach the set cleaning temperature.

In one embodiment, the co-feed system is provided with a soft water module 6. The number of the soft water modules 6 may be one or a plurality of. Specifically, the washer 1 may be provided with a soft water module 6, the soft water module 6 being disposed between the water inlet 10 and the water cup 11 in the direction of flow of water; alternatively, the water heating device 2 is provided with a soft water module 6; alternatively, the co-feed system is provided with a soft water module 6, the soft water module 6 being provided in the co-feed line.

In the present embodiment, the water softening module 6 may be provided at any one or more positions in the washer 1, the water heating device 2, or the joint line between the washer 1 and the water heating device 2. The soft water module 6 is used for adsorbing calcium and magnesium ions in water and preventing scale (calcium carbonate or magnesium carbonate). When the water heating device 2 is provided with the soft water module 6, i.e., the water heating device 2 itself is integrated with the soft water module 6, it is possible to provide the user with soft water of a target temperature. When soft water satisfying the temperature requirement is supplied to the washer 1, the washing effect of the washer 1 can be further improved.

When the cleaning machine 1 is provided with the soft water module 6, the soft water module 6 can be arranged between the water inlet 10 and the water cup 11, water entering the water inlet 10 of the cleaning machine 1 can be firstly softened through the soft water module 6, and the concentration of calcium and magnesium ions is reduced so that hard water is converted into soft water. By reducing the concentration of calcium and magnesium ions, the scale attached to the surfaces of tableware and the washing cavity of the washing machine can be avoided, so that the washing effect is further improved.

In addition, in the case of the soft water module 6 being provided in the combined supply line, the cleaning effect achieved is similar to that in the case of the above-described integrated arrangement in the washing machine 1 or the water heating device 2, and the application will not be described here again.

As shown in fig. 1, in one embodiment, the switching device is provided in the washing machine 1, controlled by the washing machine 1, and the water pump 4 is provided in the water heating device 2, controlled by the water heating device 2.

In the present embodiment, the switching device may be provided in the washing machine 1, the switching device may be directly controlled by a controller of the washing machine 1, and the water pump 4 may be provided in the water heating device 2, and directly controlled by the controller of the water heating device 2. The controller of the cleaning machine 1 and the controller of the hot water device 2 can be respectively connected into the internet of things (cloud), and then when the hot water device 2 and the cleaning machine 1 need to be linked, the controller and the controller can be communicated with the internet of things to be correspondingly controlled.

When the combined supply system provided by the application is used for working, the water inlet pipeline is preheated before the cleaning machine 1 is used for water inlet, so that the cold water section in the pipeline is shortened or directly removed, and compared with the scheme that the water inlet pipeline is not preheated, the water temperature entering the cleaning machine 1 can be increased by more than 50%, the hot water washing time is increased, and the cleaning effect is obviously improved.

Referring to fig. 5, in one embodiment, the co-feed system includes: a cleaning machine 1 provided with a water inlet 10 and a water outlet 13; a water heating device 2 provided with a water inlet 21 and a water outlet 22; a combined supply pipeline 3 arranged between the cleaning machine 1 and the water heating device 2; at least the water outlet 22 of the water heating device 2 can be connected with the water inlet 10 of the cleaning machine 1 through the combined supply pipeline 3; a temperature detection unit 54 for detecting a temperature of water supplied to the washing machine 1 by the water heating device 2; and a controller in communication with the temperature detection unit 54, the washing machine 1 and the water heating device 2.

In the present embodiment, the water outlet 22 of the water heating device 2 can be connected to the water inlet 10 of the washing machine 1 via the coupling line 3. The combined supply system mainly comprises a hot water device 2, a cleaning machine 1 and a combined supply pipeline 3 arranged between the hot water device and the cleaning machine, and also comprises: a temperature detecting unit 54 for detecting the temperature of water supplied to the cleaning machine 1 by the water heating device 2, and a controller in communication with the temperature detecting unit 54, the cleaning machine 1 and the water heating device 2.

Wherein the cleaning machine 1 comprises a containing part for receiving water supplied from the water heating device 2, the containing part is connected with the water outlet 13, and when the water temperature detected by the temperature detecting unit 54 is lower than a set cleaning temperature, the water in the containing part is discharged through the water outlet 13. Specifically, when the washing machine 1 is a dishwasher, the accommodating portion may be a water cup 11, and in this embodiment, the washing machine 1 is mainly exemplified as the dishwasher.

In the description of the present application, the differences between the embodiment and the above embodiment are emphasized, and the same or similar points are referred to each other, so that the present application is not described herein.

In this embodiment, the water heater 2 may be a non-zero cold water type water heater, and the hot water supplied from the water heater 2 to the washer 1 may be discharged from the cold water section in the joint supply line 3 between the water heater 2 and the washer 1, and then supplied to the washer 1 for main washing. Because the hot water provided by the hot water device 2 is utilized to discharge the cold water section in the joint supply pipeline 3 between the hot water device 2 and the cleaning machine 1, the water temperature supplied to the cleaning machine 1 by the subsequent hot water device 2 is higher, the water temperature supplied to the cleaning machine 1 can be effectively increased, and therefore the cleaning machine 1 can be ensured to have a better cleaning effect in a shorter cleaning time.

The temperature detecting unit 54 is used for detecting the water temperature supplied to the cleaning machine 1 by the water heating device 2, and the temperature detecting unit 54 can be arranged at any water supply position from the water outlet 22 of the water heating device 2 to the water cup 11 of the cleaning machine 1. As shown in fig. 5, the temperature detecting unit 54 may be installed in the water cup 11. When the temperature detecting unit 54 is installed in the cup 11, the temperature detecting unit 54 may be equivalent to the second temperature detecting member in the above-described embodiment.

Specifically, the controller may store a first washing temperature, and when the temperature detecting unit 54 detects that the temperature in the current water cup 11 has not reached the first washing temperature, the water supplied to the water cup 11 from the water heating device 2 may be continuously discharged to the outside. Wherein, the first cleaning temperature can be the set cleaning temperature; in addition, the first cleaning temperature may be lower than the set cleaning temperature. When the first cleaning temperature is lower than the set cleaning temperature, the water supply temperature of the water heating device 2 may not reach the set cleaning temperature of the cleaning machine 1, and the heating unit of the cleaning machine 1 may be started to raise the water temperature to the set cleaning temperature.

In this embodiment, referring to the cleaning machine 1 in the above embodiment, the cleaning machine 1 may further include a drain pump 14, the drain pump 14 may be in communication with the storage portion and the drain port 13, the drain pump 14 may be activated, and water in the storage portion may be drained through the drain port 13. By activating the drain pump 14, water having a relatively low temperature in the housing (for example, the cup 11) can be rapidly discharged to the outside. The drain pump 14 may be turned off when the water in the water pump is discharged.

Further, a water inlet valve 35 is further disposed in the combined supply pipeline 3, the water inlet valve 35 is in communication connection with the controller, and when the controller receives a water demand signal, the water inlet valve 35 communicates the water outlet 22 of the water heating device 2 with the water inlet 10 of the cleaning machine 1.

In the present embodiment, the water inlet valve 35 is mainly used for controlling the on-off relationship of the co-supply pipeline 3, that is, the on-off relationship between the water outlet 22 of the water heating device 2 and the water inlet 10 of the cleaning machine 1. The specific form of the water inlet valve 35 may be different according to the composition of the co-feed system, the piping connection, etc. Specifically, the inlet valve 35 may be a two-position two-way valve. Taking the water inlet valve 35 as a two-position two-way valve as an example, when the cleaning machine 1 does not need water, the water inlet valve 35 can be in a disconnected state; when the washer 1 requires water, the water inlet valve 35 may be switched to a closed state.

When the combined supply system provided by the application is used for working, before the water is fed into the cleaning machine 1, the hot water provided by the hot water device 2 is used for discharging the cold water section of the combined supply pipeline 3 between the hot water device 2 and the cleaning machine 1, so that the water temperature entering the cleaning machine 1 can be increased by more than 50%, the hot water washing time is increased, and the cleaning effect is obviously improved.

It should be noted that, in the description of the present application, the terms "first," "second," and the like are used for descriptive purposes only and to distinguish between similar objects, and there is no order of preference between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

The foregoing embodiments in the present specification are all described in a progressive manner, and the same and similar parts of the embodiments are mutually referred to, and each embodiment is mainly described in a different manner from other embodiments.

The foregoing is merely a few embodiments of the present utility model, and the embodiments disclosed in the present utility model are merely examples which are used for the convenience of understanding the present utility model and are not intended to limit the present utility model. Any person skilled in the art can make any modification and variation in form and detail of the embodiments without departing from the spirit and scope of the present disclosure, but the scope of the present disclosure is still subject to the scope of the appended claims.

Claims (20)

1. A co-generation system, the co-generation system comprising:

a cleaning machine provided with a water inlet and a water outlet;

a water heating device provided with a water inlet and a water outlet;

a combined supply pipeline arranged between the cleaning machine and the hot water device; at least the water outlet of the water heating device can be connected with the water inlet of the cleaning machine through the combined supply pipeline;

A temperature detection unit for detecting a temperature of water supplied to the washer by the water heating device;

and the controller is in communication connection with the temperature detection unit, the cleaning machine and the water heating device.

2. The combined supply system according to claim 1, wherein the washing machine includes a receiving portion for receiving water supplied from the water heating device, the receiving portion being connected to the water outlet, and the water in the receiving portion being discharged through the water outlet when the water temperature detected by the temperature detecting unit is lower than a set washing temperature.

3. The cogeneration system of claim 2, wherein said washer further comprises a drain pump, said drain pump in communication with said receptacle and drain.

4. The co-feed system of claim 1, wherein a water inlet valve is further disposed in the co-feed line, the water inlet valve being communicatively coupled to the controller, the water inlet valve communicating the water outlet of the water heating device with the water inlet of the washer when the controller receives a water demand signal.

5. The combined supply system according to any one of claims 1 to 4, wherein a water inlet of the water heating device is connected with a water inlet of the cleaning machine through the combined supply pipeline, a switching device and a water pump which are in communication connection with the controller are arranged in the combined supply pipeline, the switching device comprises a first state and a second state, and when the switching device is in the first state, the water heating device can be matched with at least part of the combined supply pipeline to form a first circulating waterway; when the switching device is in the second state, the water outlet of the water heating device is communicated with the water inlet of the cleaning machine, and the water heating device supplies water to the cleaning machine.

6. The combined supply system of claim 5, wherein the water inlet is further capable of communicating with a water return line, the water outlet is further capable of communicating with a hot water line, and the hot water device is capable of forming a second circulation waterway in cooperation with the water return line and the hot water line.

7. The co-supply system of claim 6, wherein the co-supply line is partially shared with the return line proximate the water inlet and the co-supply line is partially shared with the hot water line proximate the water outlet.

8. The co-generation system of claim 7, wherein the return line is a cold water line connected to the water inlet.

9. The co-feed system of claim 6, wherein the switching device comprises any one or a combination of the following: a switching valve, a combination of at least two valves.

10. The co-feed system of claim 9, wherein the switching device is disposed within the washer, or the switching device is distributed in the washer and the co-feed line, or the switching device is disposed in the co-feed line.

11. The co-generation system of claim 10, wherein the switching device is a three-way switching valve comprising a first interface, a second interface, and a third interface, the first interface and the second interface being respectively connected to the co-generation pipeline, the third interface being connected to the water inlet;

When the three-way switching valve is in the first state, the first interface is communicated with the second interface, and the water heating device and the combined supply pipeline are matched to form the first circulating waterway;

when the three-way switching valve is in the second state, the second interface is communicated with the third interface, and the water outlet of the water heating device is communicated with the water inlet of the cleaning machine.

12. The co-generation system of claim 11, wherein the co-generation piping comprises a first pipe section and a second pipe section, one end of the first pipe section being connected to the hot water piping and the other end being connected to the second port, one end of the second pipe section being connected to the return water piping and the other end being connected to the first port.

13. The co-generation system of claim 5, further comprising a thermostat for detecting a water temperature in the first circulation water path, the switching device being switched from the first state to the second state when the temperature detected by the thermostat reaches a target water temperature.

14. The co-feed system of claim 13, wherein the thermostat is disposed in at least one of: and the position close to the water inlet of the water heating device is in the switching device.

15. The combined supply system according to claim 1, wherein the washing machine includes a heating unit, a housing portion for receiving water supplied from the water heating device, and the heating unit is capable of heating the water in the housing portion to a set washing temperature when the water temperature detected by the temperature detecting unit is lower than the set washing temperature.

16. The cogeneration system of claim 5, wherein said washer is provided with a soft water module; and/or the water heating device is provided with a soft water module; and/or the combined supply system is provided with a soft water module, and the soft water module is arranged in the combined supply pipeline.

17. The co-feed system according to claim 1, wherein,

the controller is arranged in the cleaning machine; or,

the controller is arranged in the water heating device; or,

the controllers are independently arranged; or,

the controller is arranged at the cloud end, and the hot water device and the cleaning machine are provided with communication modules.

18. The co-generation system of claim 5, wherein the water pump is disposed at any of: the water heater, the cleaning machine and the combined supply pipeline.

19. The cogeneration system of claim 18, wherein said switching device is disposed in said washer and controlled by said washer, and said water pump is disposed in said water heating device and controlled by said water heating device.

20. The cogeneration system of claim 1, wherein said washer comprises any one of:

dish washer and washing machine.