A control method for a waterway module system

Abstract

The present invention discloses a control method for a water circuit module system, wherein a water circuit module system comprises a water mixer, a heat exchanger, a unit water circuit, a heating water circuit and a hot water water circuit, wherein the unit water circuit and the heating water circuit both pass through the water mixer, and the water mixer is used to mix the water from the heating water circuit and the unit water circuit entering the water mixer and then discharge the water from the heating water circuit and the unit water circuit, and the unit water circuit and the hot water water circuit both pass through the heat exchanger; the water circuit module system switches different functional modes by controlling the connectivity and shutoff of the unit water circuit, the heating water circuit and the hot water water circuit, and a control method for a water circuit module system comprises the above-mentioned water circuit module system, mainly realizing the switching of the modes such as cooling, heating and hot water by connecting the water circuit in series with the water mixer and the heat exchanger and controlling the operation of the three fluid driving devices inside the water circuit module, and realizing the dual-mode operation of heating and hot water, thereby avoiding the risk of jamming caused by frequent switching when using a three-way valve and increasing the reliability of the operation of the water circuit system.

Description

Technical Field

[0001] The invention belongs to the field of heating hot water, and in particular relates to a control method for a water channel module system. Background Art

[0002] At present, the integrated water circuit modules on the market are designed to simplify the installation of the project. They integrate the water circuit components of the air-to-heat pump unit and meet the customer's needs for simultaneous operation of both heating and hot water modes.

[0003] The traditional water circuit module switches the water circuits of heating and hot water by switching the three-way valve of the water circuit, thereby switching between cooling, heating and hot water modes. However, this solution currently has the following problems in market applications:

[0004] 1. The mode switching is realized by switching the water circuit through the three-way valve. The three-way valve frequently switches the water circuit, which may cause the three-way valve to fail and get stuck;

[0005] 2. The water circuit module of the three-way valve can only operate in a single water circuit at the same time. It runs the corresponding mode alone and needs to wait for the current mode to end before switching to another mode. It cannot meet the customer's needs for dual-mode operation of heating and hot water, and the customer experience is poor;

[0006] 3. Most water modules have only one main circulation water pump. For the water pumps on the heating side and the hot water side, customers need to adjust them with separate external water pumps.

[0007] Therefore, a new technology is needed to solve the problem that the integrated water circuit module in the prior art cannot achieve dual-mode operation of heating and hot water. Summary of the invention

[0008] In order to solve the above problems in the prior art, the present invention provides a control method for a water circuit module system, which has the effect of achieving dual-mode operation of heating and hot water.

[0009] The present invention adopts the following technical solutions:

[0010] A water channel module system, the water channel module system includes a water mixer, a heat exchanger, a unit water channel, a heating water channel and a hot water water channel, the unit water channel and the heating water channel both pass through the water mixer, the water mixer is used to mix the water from the heating water channel and the unit water channel entering the water mixer and then discharge it from the heating water channel and the unit water channel, the unit water channel and the hot water channel both pass through the heat exchanger; the water channel module system switches different functional modes by controlling the connection and closing of the unit water channel, the heating water channel and the hot water channel:

[0011] Wherein, in the cooling mode, cold water is input from the water circuit of the unit, and after being mixed with the inlet water of the heating water circuit in the water mixer, flows into the heating water circuit and the unit water circuit respectively;

[0012] In the heating mode, hot water is input from the water circuit of the unit and exchanges heat with the hot water circuit in the heat exchanger;

[0013] In the heating mode, hot water is input from the water circuit of the unit, and after being mixed with the inlet water of the heating water circuit in the water mixer, it flows into the heating water circuit and the unit water circuit respectively;

[0014] In heating + hot water mode: hot water is input from the unit water circuit, mixed with the incoming water of the heating water circuit in the water mixer and flows into the heating water circuit and the unit water circuit respectively; the unit water circuit exchanges heat with the hot water water circuit in the heat exchanger.

[0015] As a further improvement of the technical solution of the present invention, the unit water circuit is provided with a unit water inlet and a unit water outlet connected to the heat pump;

[0016] The heating water circuit is provided with a heating water inlet and a heating water outlet connected to the heating terminal;

[0017] The water mixer is provided with a water mixing chamber, and the water mixing chamber is provided with a first water mixer inlet, a second water mixer inlet, a first water mixer outlet and a second water mixer outlet which are connected with the water mixer;

[0018] The heat exchanger is provided with a first inlet of the heat exchanger, a second inlet of the heat exchanger, a first outlet of the heat exchanger and a second outlet of the heat exchanger, the first inlet of the heat exchanger is communicated with the first outlet of the heat exchanger, and the second inlet of the heat exchanger is communicated with the second outlet of the heat exchanger; the hot water circuit is provided with a hot water inlet and a hot water return port connected to the hot water terminal;

[0019] The water inlet of the unit is connected to the first inlet of the water mixer, the first outlet of the water mixer is connected to the first inlet of the heat exchanger, and the first outlet of the heat exchanger is connected to the water outlet of the unit; the hot water return port is connected to the second inlet of the heat exchanger, and the hot water inlet is connected to the second outlet of the heat exchanger; the heating water inlet is connected to the second inlet of the water mixer, and the heating water outlet is connected to the second outlet of the water mixer.

[0020] As a further improvement of the technical solution of the present invention, the heating water circuit also includes a bypass water circuit that can control connection and closure, and the bypass water circuit connects the heating water inlet and the heating water outlet outside the mixing water chamber.

[0021] As a further improvement of the technical solution of the present invention, the unit water circuit is provided with a first fluid driving device, the hot water water circuit is provided with a second fluid driving device, and the heating water circuit is provided with a third fluid driving device;

[0022] In the cooling mode, the first fluid driving device and the third fluid driving device are started, and the second fluid driving device is turned off;

[0023] In the heating mode, the first fluid driving device and the second fluid driving device are started, and the third fluid driving device is turned off;

[0024] In the heating mode, the first fluid driving device and the third fluid driving device are started, and the second fluid driving device is turned off;

[0025] In the heating+hot water mode, the first fluid driving device, the second fluid driving device and the third fluid driving device are started.

[0026] As a further improvement of the technical solution of the present invention, the heating water circuit and the hot water circuit are respectively provided with temperature sensors connected to the corresponding working ends, and the system also has a cooling + hot water mode;

[0027] In the cooling+hot water mode, one of the cooling mode or the hot water mode is operated separately, and then switched to the other mode of the cooling mode or the hot water mode.

[0028] As a further improvement of the technical solution of the present invention, the water mixer is provided with a heating module.

[0029] A control method for a water channel module system, the water channel module system comprising a water mixer, a heat exchanger, a unit water channel, a heating water channel and a hot water water channel, the unit water channel and the heating water channel both pass through the water mixer, the water mixer is used to mix the water from the heating water channel and the unit water channel entering the water mixer and then discharge it from the heating water channel and the unit water channel, the unit water channel and the hot water water channel both pass through the heat exchanger;

[0030] When the cooling mode is in operation, the unit water circuit and the heating water circuit are both open and connected, the hot water circuit is closed, cold water is input from the unit water circuit, and after mixing with the inlet water of the heating water circuit in the water mixer, flows into the heating water circuit and the unit water circuit respectively;

[0031] When the heating mode is in operation, the water circuit of the unit and the hot water circuit are both opened and connected, the heating water circuit is closed, and hot water is input from the water circuit of the unit to exchange heat with the hot water circuit in the heat exchanger;

[0032] When the heating mode is in operation, the unit waterway and the heating waterway are both opened and connected, the hot water waterway is closed, and hot water is input from the unit waterway, and after being mixed with the inlet water of the heating waterway in the water mixer, it flows into the heating waterway and the unit waterway respectively;

[0033] When the heating + hot water mode is running, the unit water circuit, the heating water circuit and the hot water water circuit are all opened and connected, hot water is input from the unit water circuit, and flows into the heating water circuit and the unit water circuit respectively after being mixed with the incoming water of the heating water circuit in the water mixer; the unit water circuit exchanges heat with the hot water water circuit in the heat exchanger.

[0034] As a further improvement of the technical solution of the present invention, the unit water circuit is provided with a first fluid driving device, the hot water water circuit is provided with a second fluid driving device, and the heating water circuit is provided with a third fluid driving device;

[0035] The first fluid driving device and the third fluid driving device are started, the second fluid driving device is turned off, and the water module system is switched to the cooling mode; or

[0036] The first fluid driving device and the second fluid driving device are started, the third fluid driving device is turned off, and the water module system is switched to the heating mode; or

[0037] The first fluid driving device and the third fluid driving device are started, the second fluid driving device is turned off, and the water module system is switched to the heating mode; or

[0038] The first fluid driving device, the second fluid driving device and the third fluid driving device are started, and the water module system is switched to the heating+hot water mode.

[0039] As a further improvement of the technical solution of the present invention, the heating water channel and the hot water water channel are respectively provided with temperature sensors connected to the corresponding working ends;

[0040] When the cooling + hot water mode is running, one of the cooling mode or the hot water mode is run separately, so that the corresponding working end in this mode reaches a predetermined temperature or runs for a predetermined time, and detects whether the temperature of the other working end meets the startup requirements. If the startup requirements are met, switch to the other mode of the cooling mode or the hot water mode.

[0041] As a further improvement of the technical solution of the present invention, the water mixer is provided with a heating module. When the heating mode or the heating + hot water mode is operated, when the temperature of the hot water input by the water circuit of the unit is lower than the preset temperature, the heating module is started.

[0042] Compared with the prior art, the present invention has the following beneficial effects:

[0043] The water circuit module system of the present technical solution mainly realizes the switching of cooling, heating and hot water modes by connecting a water mixer and a heat exchanger in series in the water circuit and controlling the operation of three fluid driving devices inside the water circuit module, and can realize dual-mode operation of heating and hot water, thereby replacing the function of the three-way valve to switch the water circuit, avoiding the risk of jamming caused by frequent switching when using the three-way valve, and increasing the reliability of the water circuit system operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0045] Figure 1 It is a waterway working flow diagram of the integrated waterway module of the present invention;

[0046] Figure 2 It is the water flow chart of cooling and heating modes of the integrated water module;

[0047] Figure 3 It is the hot water mode water circuit workflow diagram of the integrated water circuit module;

[0048] Figure 4 It is the water circuit working flow diagram of the unit with integrated water circuit module.

[0049] Reference numerals:

[0050] 1-water mixer; 11-first inlet of water mixer; 12-second inlet of water mixer; 13-first outlet of water mixer; 14-second outlet of water mixer; 15-water mixing chamber;

[0051] 2-heat exchanger; 21-first inlet of heat exchanger; 22-second inlet of heat exchanger; 23-first outlet of heat exchanger; 24-second outlet of heat exchanger;

[0052] 3-unit water circuit; 31-unit water inlet; 32-unit water outlet; 33-first fluid driving device;

[0053] 4-heating water circuit; 41-heating terminal; 411-heating water inlet; 412-heating water outlet; 42-third fluid driving device;

[0054] 5-hot water circuit; 51-second fluid driving device; 52-hot water end; 521-hot water return port; 522-hot water inlet; 53-second one-way valve;

[0055] 6- bypass waterway; 61- first one-way valve;

[0056] 7-Expansion tank;

[0057] 8-first connecting valve;

[0058] 9- Second connecting valve. DETAILED DESCRIPTION

[0059] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0060] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0061] Reference Figures 1 to 4 , a control method for a waterway module system, the flow chart of which is shown in Figure 1 In the present method, the water circuit module system includes an integrated water circuit module, and the integrated water circuit module includes a water mixer 1, a heat exchanger, a unit water circuit 3, a heating water circuit 4, and a hot water water circuit 5. The water mixer 1 is preferably a coupler. The water circuit switching is performed using the water mixer 1, which avoids the risk of jamming caused by frequent switching when using a three-way valve, and increases the reliability of the operation of the water circuit system. The heat exchanger is preferably a plate heat exchanger. The unit water circuit 3 and the heating water circuit 4 both pass through the water mixer 1. The water mixer 1 is used to mix the water from the heating water circuit 4 and the unit water circuit 3 entering the water mixer 1 and then discharge it from the heating water circuit 4 and the unit water circuit 3. The unit water circuit 3 and the hot water circuit 5 both pass through the heat exchanger. The water circuit module system switches different functional modes by controlling the connection and closing of the unit water circuit 3, the heating water circuit 4, and the hot water circuit 5:

[0062] Among them, in the cooling mode, the working terminal (such as heat pump, heating terminal 41) connected to the unit water circuit 3 and the heating water circuit 4 runs cooling, and the cold water generated by the heat pump is input by the unit water circuit 3, and after being mixed with the incoming water of the heating water circuit 4 in the water mixer 1, it flows into the heating water circuit 4 and the unit water circuit 3 respectively. The cold water obtained by the heating water circuit 4 is transported to the heating terminal 41 for cooling, and then continues to return to the water mixer 1 to mix with the cold water of the unit water circuit 3.

[0063] In the heating mode, the working end (such as a heat pump or a hot water tank) connected to the unit water circuit 3 and the hot water water circuit 5 operates for heating. The hot water generated by the heat pump is input from the unit water circuit 3, and the warm water in the hot water tank enters the heat exchanger from the hot water water circuit 5, and exchanges heat with the hot water water circuit 5 in the heat exchanger, thereby obtaining hot water with a higher temperature and storing it in the hot water tank. The hot water in the unit water circuit 3 has its temperature reduced after passing through the heat exchanger, and returns to the heat pump to continue being heated.

[0064] In the heating mode, the working terminal (such as a heat pump, a heating terminal 41) connected to the unit water circuit 3 and the heating water circuit 4 operates for heating, and the hot water generated by the heat pump is input from the unit water circuit 3, and after being mixed with the incoming water of the heating water circuit 4 in the water mixer 1, it flows into the heating water circuit 4 and the unit water circuit 3 respectively. The hot water obtained in the heating water circuit 4 is transported to the heating terminal 41 for heating, and then continues to return to the water mixer 1 to mix with the hot water in the unit water circuit 3.

[0065] In the heating + hot water mode, the working terminals (such as heat pump, heating terminal 41, hot water tank) connected to the unit water circuit 3, hot water circuit 5 and heating water circuit 4 operate heating, and the hot water generated by the heat pump is input from the unit water circuit 3, and after being mixed with the water inlet of the heating water circuit 4 in the water mixer 1, it flows into the heating water circuit 4 and the unit water circuit 3 respectively. The hot water obtained by the heating water circuit 4 is transported to the heating terminal 41 for heating, and then continues to return to the water mixer 1 to mix with the hot water in the unit water circuit 3; the warm water in the hot water tank enters the heat exchanger from the hot water circuit 5, and the unit water circuit 3 exchanges heat with the hot water circuit 5 in the heat exchanger, thereby obtaining hot water with a higher temperature and storing it in the hot water tank. The hot water in the unit water circuit 3 is cooled after passing through the heat exchanger, and returns to the heat pump to continue to be heated. In this mode, heating and hot water making are realized at the same time, which can meet the needs of customers for heating and preparing hot water at the same time, without waiting for switching time, and increasing the customer experience.

[0066] Specifically, the unit water circuit 3 is provided with a unit water inlet 31 and a unit water outlet 32 ​​connected to the heat pump. The heating water circuit 4 is provided with a heating water inlet 411 and a heating water outlet 412 connected to the heating terminal 41. The water mixer 1 is provided with a water mixing chamber 15, and the water mixing chamber 15 is provided with a first water mixer inlet 11, a second water mixer inlet 12, a first water mixer outlet 13 and a second water mixer outlet 14 connected to the water mixer.

[0067] The heat exchanger is provided with a first heat exchanger inlet 21, a second heat exchanger inlet 22, a first heat exchanger outlet 23 and a second heat exchanger outlet 24. The first heat exchanger inlet 21 is connected to the first heat exchanger outlet 23, and the second heat exchanger inlet 22 is connected to the second heat exchanger outlet 24. The hot water circuit 5 is provided with a hot water inlet 522 and a hot water return port 521 connected to the hot water terminal 52. A second connecting valve 9 is provided between the second heat exchanger outlet 24 and the second heat exchanger inlet 22 for connecting the second heat exchanger outlet 24 with the second heat exchanger inlet 22 when needed. The second connecting valve 9 is preferably an electromagnetic two-way valve. An exhaust valve is provided on the left side of the second connecting valve 9. The exhaust valve can exhaust the air in the water circuit to prevent the water pump from being emptied and damaged.

[0068] The water inlet 31 of the unit is connected to the first inlet 11 of the water mixer, the first outlet 13 of the water mixer is connected to the first inlet 21 of the heat exchanger, the first outlet 23 of the heat exchanger is connected to the water outlet 32 ​​of the unit, and an expansion tank 7 is provided between the first outlet 23 of the heat exchanger and the water outlet 32 ​​of the unit. The expansion tank 7 can buffer the pressure fluctuation of the water channel module, eliminate water hammer, and play a role in stabilizing pressure and unloading. A filter is provided between the expansion tank 7 and the first outlet 23 of the heat exchanger, and the filter has the function of filtering sewage in the water channel; the hot water return port 521 is connected to the second inlet 22 of the heat exchanger, and the hot water inlet 522 is connected to the second outlet 24 of the heat exchanger; the heating water inlet 411 is connected to the second inlet 12 of the water mixer, and the heating water outlet 412 is connected to the second outlet 14 of the water mixer.

[0069] Specifically, the heating water circuit 4 also includes a bypass water circuit 6 that can be controlled to be connected and closed, and the bypass water circuit 6 connects the heating water inlet 411 and the heating water outlet 412 outside the water mixing chamber 15. When the water temperature of the water mixed and exchanged by the water mixer 1 is high, the water outlet temperature of the heating terminal 41 can be controlled by the water inlet of the bypass water circuit 6 to meet the water temperature requirement for heating.

[0070] Specifically, the unit water circuit 3 is provided with a first fluid driving device 33 as a unit circulating water pump, the hot water water circuit 5 is provided with a second fluid driving device 51 as a hot water circulating water pump, and the heating water circuit 4 is provided with a third fluid driving device 42 as a heating circulating water pump. The setting of three circulating water pumps can simplify the installation of water pumps for users during use.

[0071] In the cooling mode, the first fluid driving device 33 and the third fluid driving device 42 are started, and the second fluid driving device 51 is turned off. Cold water flows into the end of the heating water circuit 4 from the sequentially connected unit water inlet 31, the first inlet of the mixer, the second outlet of the mixer, and the heating water inlet 411. After the cold water circulates at the end of the heating water circuit 4, the first heating end 41 return water is formed. The first heating end 41 return water passes through the sequentially connected heating water inlet 411, the second inlet 12 of the mixer, the first outlet 13 of the mixer, the first inlet 21 of the heat exchanger, the second outlet 24 of the heat exchanger, and the unit water outlet 32 ​​to form the unit return water.

[0072] In the heating mode, the first fluid driving device 33 and the second fluid driving device 51 are started, and the third fluid driving device 42 is closed. Hot water enters the heat exchanger through the sequentially connected water inlet 31 of the unit, the first inlet 11 of the water mixer, the first outlet 13 of the water mixer, and the first inlet 21 of the heat exchanger for heat exchange. The hot water after heat exchange flows out from the first outlet 23 of the heat exchanger and enters the hot water tank through the hot water outlet. The hot water in the hot water tank flows back from the end of the hot water water path 5 to form hot water end return water. The hot water end return water enters the heat exchanger through the sequentially connected hot water inlet 522 and the second inlet 22 of the heat exchanger for heat exchange. The hot water end return water after heat exchange passes through the connected second outlet 24 of the heat exchanger and the unit water outlet 32 ​​in sequence to form unit return water.

[0073] In the heating mode, the first fluid driving device 33 and the third fluid driving device 42 are started, and the second fluid driving device 51 is closed. The hot water flows into the end of the heating water circuit 4 through the sequentially connected unit water inlet 31, the first inlet 11 of the water mixer, the second outlet 14 of the water mixer, and the heating water inlet 411. After the hot water circulates at the end of the heating water circuit 4, the second heating end 41 return water is formed. The second heating end 41 return water passes through the sequentially connected heating water inlet 411, the second inlet 12 of the water mixer, the first outlet 13 of the water mixer, the first inlet 21 of the heat exchanger, the second outlet 24 of the heat exchanger, and the unit water outlet 32 ​​to form unit return water. The heating end inlet water and the hot water are mixed in the water mixer 1 for heat exchange and then flow through the heat exchanger into the unit water outlet 32.

[0074] In the heating + hot water mode, the first fluid driving device 33, the second fluid driving device 51 and the third fluid driving device 42 are started, and hot water flows into the water mixer 1 from the water inlet 31 of the unit for mixing and heat exchange. A part of the hot water after the mixing and heat exchange enters the hot water side of the heat exchanger for heat exchange and then flows into the hot water tank at the end of the hot water waterway 5, and another part of the hot water after the mixing and heat exchange flows out of the water mixer 1 and enters the end of the heating waterway 4.

[0075] Specifically, the heating water circuit 4 and the hot water circuit 5 are respectively provided with temperature sensors connected to the corresponding working terminals, and the system also has a cooling + hot water mode. In the cooling + hot water mode, one of the cooling mode or the hot water mode is operated separately, and then switched to the other of the cooling mode or the hot water mode.

[0076] Specifically, the water mixer 1 is provided with a heating module. When the temperature of water flowing into the heating terminal 41 is low, the heating module in the water mixer 1 can be turned on to heat the hot water flowing into the heating terminal 41 so that the water temperature meets the requirement of the heating terminal 41. A secondary water pump system is provided on the heating side of the water mixer 1, which solves the problem of mismatch in water channel head on the heating side.

[0077] A control method for a water circuit module system includes the water circuit module system described above, wherein the water circuit module system includes a water mixer 1, a heat exchanger, a unit water circuit 3, a heating water circuit 4 and a hot water water circuit 5, the unit water circuit 3 and the heating water circuit 4 both pass through the water mixer 1, the water mixer 1 is used to mix the water from the heating water circuit 4 and the unit water circuit 3 entering the water mixer 1 and then discharge it from the heating water circuit 4 and the unit water circuit 3, the unit water circuit 3 and the hot water water circuit 5 both pass through the heat exchanger, the water circuit module system of the present technical solution mainly realizes the switching of cooling, heating and hot water modes by connecting the water mixer 1 and the heat exchanger in series with the water circuit, and controlling the operation of the three fluid driving devices inside the water circuit module, and can realize dual-mode operation of heating and hot water, thereby replacing the function of the three-way valve to switch the water circuit.

[0078] When the cooling mode is running, the unit water circuit 3 and the heating water circuit 4 are both opened and connected, the hot water water circuit 5 is closed, cold water is input from the unit water circuit 3, and after being mixed with the inlet water of the heating water circuit 4 in the water mixer 1, they flow into the heating water circuit 4 and the unit water circuit 3 respectively. The unit water circuit 3 runs in the cooling mode, the first and third fluid driving devices 42 are turned on, and the second fluid driving device 51 is turned off. The unit inlet water and the heating inlet water are mixed for heat exchange in the water mixer 1, and then return to the unit outlet water through the heat exchanger. At this time, there is no heat exchange when passing through the heat exchanger, so that the temperature of the heating outlet water reaches the required temperature.

[0079] When the heating mode is running, the unit water circuit 3 and the hot water water circuit 5 are both opened and connected, the heating water circuit 4 is closed, hot water is input from the unit water circuit 3, and heat is exchanged with the hot water water circuit 5 in the heat exchanger. The unit water circuit 3 runs the heating mode, the first and second fluid driving devices are turned on, and the third fluid driving device 42 is turned off. The unit inlet water is first mixed by the water mixer 1, and no heat exchange is performed when mixing by the water mixer 1. Then, the water is subjected to heat exchange on the hot water side through the heat exchanger, so that the temperature of the hot water outlet reaches the required temperature.

[0080] When the heating mode is operated, the unit water circuit 3 and the heating water circuit 4 are both opened and connected, the hot water water circuit 5 is closed, hot water is input from the unit water circuit 3, and after being mixed with the inlet water of the heating water circuit 4 in the water mixer 1, it flows into the heating water circuit 4 and the unit water circuit 3 respectively. The unit water circuit 3 operates in the heating mode, the first and third fluid driving devices 42 are turned on, and the second fluid driving device 51 is turned off. The unit inlet water and the heating inlet water are mixed for heat exchange in the water mixer 1, and then return to the unit inlet water through the heat exchanger. At this time, there is no heat exchange when passing through the heat exchanger, so that the temperature at the heating water inlet 411 reaches the required temperature.

[0081] When the heating + hot water mode is operated, the unit water circuit 3, the heating water circuit 4 and the hot water water circuit 5 are all opened and connected, hot water is input from the unit water circuit 3, and flows into the heating water circuit 4 and the unit water circuit 3 respectively after being mixed with the inlet water of the heating water circuit 4 in the water mixer 1; the unit water circuit 3 exchanges heat with the hot water water circuit 5 in the heat exchanger, and the unit water circuit 3 operates in the heating mode, and the first, second and third fluid driving devices 42 are all turned on, and the hot water with high temperature of the unit is first mixed and heat exchanged in the water mixer 1, and then heat exchanged on the hot water side through the heat exchanger, so that the temperature of the hot water inlet reaches the required temperature.

[0082] Specifically, the unit water circuit 3 is provided with a first fluid driving device 33, the hot water water circuit 5 is provided with a second fluid driving device 51, and the heating water circuit 4 is provided with a third fluid driving device 42;

[0083] The first fluid driving device 33 and the third fluid driving device 42 are started, the second fluid driving device 51 is turned off, and the water module system is switched to the cooling mode; or

[0084] The first fluid driving device 33 and the second fluid driving device 51 are started, the third fluid driving device 42 is turned off, and the water module system is switched to the heating mode; or

[0085] The first fluid driving device 33 and the third fluid driving device 42 are started, the second fluid driving device 51 is turned off, and the water module system is switched to the heating mode; or

[0086] The first fluid driving device 33 , the second fluid driving device 51 and the third fluid driving device 42 are started, and the water module system is switched to the heating+hot water mode.

[0087] The switching of various modes is achieved by starting and stopping the above three fluid driving devices.

[0088] Specifically, the heating water channel 4 and the hot water water channel 5 are respectively provided with temperature sensors connected to the corresponding working ends;

[0089] When the cooling + hot water mode is running, one of the cooling mode or the hot water mode is run separately, so that the corresponding working end in this mode reaches a predetermined temperature or runs for a predetermined time, and detects whether the temperature of the other working end meets the startup requirements. If the startup requirements are met, it switches to the other mode of the cooling mode or the hot water mode. In one embodiment, the cooling and hot water modes are run separately, and the working end of the hot water circuit 5 is provided with a water tank for storing hot water. The water tank and the heating end 41 are provided with temperature sensors. The hot water mode is turned on first to heat the water tank temperature to the target temperature. After the hot water mode single mode runs for a predetermined time (for example, 1 hour or 2 hours), the unit will determine whether the water temperature of the heating end 41 in the cooling mode meets the startup requirements (for example, whether the water temperature is higher than the predetermined temperature). If so, it switches to the cooling mode until the constant temperature shutdown is met or the cumulative time exceeds 2 hours.

[0090] In another embodiment, the cooling and hot water modes are operated separately, and a water tank for storing hot water is provided at the working end of the hot water circuit 5. The water tank and the heating end 41 are provided with temperature sensors. The cooling mode is turned on first to adjust the temperature of the heating end 41 to the target temperature. After the cooling mode has been running for 2 hours in total, the unit will determine whether the water temperature of the hot water mode meets the startup requirements. If so, it will switch to the hot water mode until the constant temperature shutdown is met or the cumulative time exceeds 2 hours.

[0091] Specifically, the water mixer 1 is provided with a heating module. When the heating mode or the heating+hot water mode is operated and the temperature of the hot water inputted into the water circuit 3 of the unit is lower than a preset temperature, the heating module is started.

[0092] For other contents of the control method of a water channel module system described in the present invention, please refer to the prior art and will not be repeated here.

[0093] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A waterway module system, characterized by: The water channel module system includes a water mixer, a heat exchanger, a unit water channel, a heating water channel, and a hot water channel. The unit water channel and the heating water channel both pass through the water mixer. The water mixer is used to mix the water from the heating water channel and the unit water channel and then discharge it from the heating water channel and the unit water channel. The unit water channel and the hot water channel both pass through the heat exchanger. The water channel module system switches different functional modes by controlling the connection and closing of the unit water channel, the heating water channel, and the hot water channel: In the cooling mode, cold water is input from the unit water channel, mixed with the water from the heating water channel in the water mixer, and then flows into the heating water channel and the unit water channel respectively; In heating mode, hot water is input from the water circuit of the unit and exchanges heat with the hot water circuit in the heat exchanger; In heating mode, hot water is input from the unit water channel, mixed with the inlet water of the heating water channel in the water mixer and then flows into the heating water channel and the unit water channel respectively; In heating + hot water mode: hot water is input from the unit water channel, mixed with the inlet water of the heating water channel in the water mixer and then flows into the heating water channel and the unit water channel respectively; the unit water channel exchanges heat with the hot water water channel in the heat exchanger; The unit water channel is provided with a unit water inlet and a unit water outlet connected to the heat pump; The heating water channel is provided with a heating water inlet and a heating water outlet connected to the heating terminal; The water mixer is provided with a water mixing chamber, and the water mixing chamber is provided with a first water mixer inlet, a second water mixer inlet, a first water mixer outlet and a second water mixer outlet which are communicated with the water mixer; The heat exchanger is provided with a first heat exchanger inlet, a second heat exchanger inlet, a first heat exchanger outlet and a second heat exchanger outlet, the first heat exchanger inlet is connected to the first heat exchanger outlet, and the second heat exchanger inlet is connected to the second heat exchanger outlet; the hot water circuit is provided with a hot water inlet and a hot water return port connected to the hot water terminal; The water inlet of the unit is connected to the first inlet of the water mixer, the first outlet of the water mixer is connected to the first inlet of the heat exchanger, and the first outlet of the heat exchanger is connected to the water outlet of the unit; the hot water return port is connected to the second inlet of the heat exchanger, and the hot water inlet is connected to the second outlet of the heat exchanger; the heating water inlet is connected to the second inlet of the water mixer, and the heating water outlet is connected to the second outlet of the water mixer; The heating water channel also includes a bypass water channel that can be controlled to be connected and closed, and the bypass water channel connects the heating water inlet and the heating water outlet outside the mixing water chamber.

2. The waterway module system according to claim 1, characterized in that: The unit water circuit is provided with a first fluid driving device, the hot water circuit is provided with a second fluid driving device, and the heating water circuit is provided with a third fluid driving device; In the cooling mode, the first fluid driving device and the third fluid driving device are started, and the second fluid driving device is turned off; In the heating mode, the first fluid driving device and the second fluid driving device are started, and the third fluid driving device is turned off; In the heating mode, the first fluid driving device and the third fluid driving device are started, and the second fluid driving device is turned off; In the heating+hot water mode, the first fluid driving device, the second fluid driving device, and the third fluid driving device are started.

3. The waterway module system according to claim 1 or 2, characterized in that: The heating water channel and the hot water water channel are respectively provided with temperature sensors connected to the corresponding working terminals, and the system also has a cooling + hot water mode; In the cooling+hot water mode, one of the cooling mode or the hot water mode is operated separately, and then switched to the other of the cooling mode or the hot water mode.

4. The waterway module system according to claim 1 or 2, characterized in that: The water mixer is provided with a heating module.

5. A method for controlling a waterway module system, using the waterway module system according to any one of claims 1 to 4, characterized in that: When running in cooling mode, the unit water channel and the heating water channel are both open and connected, the hot water channel is closed, cold water is input from the unit water channel, and after mixing with the water in the heating water channel in the water mixer, flows into the heating water channel and the unit water channel respectively; When operating in heating mode, the unit water channel and the hot water channel are both open and connected, the heating water channel is closed, and hot water is input from the unit water channel and exchanges heat with the hot water channel in the heat exchanger; When the heating mode is in operation, the unit water channel and the heating water channel are both opened and connected, the hot water channel is closed, and hot water is input from the unit water channel, mixed with the water from the heating water channel in the water mixer, and then flows into the heating water channel and the unit water channel respectively; When the heating + hot water mode is running, the unit water channel, the heating water channel and the hot water channel are all opened and connected, hot water is input from the unit water channel, and after mixing with the incoming water of the heating water channel in the water mixer, it flows into the heating water channel and the unit water channel respectively; the unit water channel exchanges heat with the hot water water channel in the heat exchanger.

6. The control method of the waterway module system according to claim 5, characterized in that: The unit water circuit is provided with a first fluid driving device, the hot water circuit is provided with a second fluid driving device, and the heating water circuit is provided with a third fluid driving device; Starting the first fluid driving device and the third fluid driving device, closing the second fluid driving device, and switching the water module system to the cooling mode; or Starting the first fluid driving device and the second fluid driving device, closing the third fluid driving device, and switching the water module system to the heating mode; or Starting the first fluid driving device and the third fluid driving device, shutting down the second fluid driving device, and switching the water module system to the heating mode; or The first fluid driving device, the second fluid driving device and the third fluid driving device are started, and the water module system is switched to the heating+hot water mode.

7. The control method of the waterway module system according to claim 5, characterized in that: The heating water channel and the hot water water channel are respectively provided with temperature sensors connected to the corresponding working ends; When running in cooling + hot water mode, run one of the cooling mode or the hot water mode separately, so that the corresponding working end in this mode reaches a predetermined temperature or runs for a predetermined time, and detect whether the temperature of the other working end meets the startup requirements. If the startup requirements are met, switch to the other mode of the cooling mode or the hot water mode.

8. The control method of the waterway module system according to claim 5, characterized in that: The water mixer is provided with a heating module. When the heating mode or the heating + hot water mode is operated, the heating module is started when the temperature of the hot water input by the water circuit of the unit is lower than the preset temperature.

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