Front plate exchange waterway module

Abstract

The utility model discloses a front plate exchange waterway module. The front plate exchange waterway module comprises a water inlet module and a water outlet module, the water inlet module comprises a water inlet valve and a three-way valve, the water inlet valve comprises a cold water inlet, a first mounting cavity, a cold water plate exchange inlet and a hot water plate exchange outlet, the cold water inlet, the first mounting cavity and the cold water plate exchange inlet are communicated, and the three-way valve comprises a heating water return connector, a second mounting cavity and a water pump connector; the heating water return connector and the water pump connector are communicated or disconnected through a three-way motor, and the hot water plate exchange outlet and the water pump connector are communicated or disconnected through a three-way motor. The three-way motor is arranged at the water inlet module and used for switching the flow direction of hot water cooled by the plate heat exchanger, so that the sealing end of the three-way motor is prevented from being in direct contact with the hot water, and the service life of the three-way motor is prolonged.

Description

Technical Field

[0001] This utility model relates to wall-hung boiler modules, and more specifically, to a front-mounted water exchange module. Background Technology

[0002] The existing water circuit module has a flow sensor located at the inlet valve and a three-way motor located at the outlet valve. The three-way motor is used to switch the direction of hot water flow at the outlet valve. Due to the high temperature of the hot water, the valve stem and sealing end of the three-way motor are in contact with hot water for a long time, which may cause deformation of the sealing end and affect the sealing quality. Scale is also prone to build up in the water circuit. When the scale buildup on the valve stem and sealing end of the three-way motor is severe, it may cause the valve stem to be unable to move up and down normally, and it will also affect the sealing quality. The heat from the hot water is conducted to the three-way motor, which may cause the motor temperature to be too high and reduce the service life of the motor. Therefore, there is an urgent need to improve this aspect. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a front plate heat exchanger module. By setting the three-way motor at the water inlet module, the three-way motor is used to switch the flow direction of the hot water after it has been cooled by the plate heat exchanger. This avoids the sealed end of the three-way motor from directly contacting the hot water, which helps to improve the service life of the three-way motor.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a front-mounted water exchange module, comprising an inlet module and an outlet module;

[0005] The water inlet module includes an inlet valve and a three-way valve. The inlet valve includes a cold water inlet, a first mounting cavity, a cold water plate heat exchanger inlet, and a hot water plate heat exchanger outlet. The cold water inlet, the first mounting cavity, and the cold water plate heat exchanger inlet are connected. The three-way valve includes a heating return water interface, a second mounting cavity, and a water pump interface. A three-way motor is installed in the second mounting cavity. The heating return water interface and the water pump interface are connected or disconnected through the three-way motor. The hot water plate heat exchanger outlet and the water pump interface are connected or disconnected through the three-way motor.

[0006] The water outlet module includes a water outlet valve and a water outlet tee. The water outlet valve includes a bathroom water outlet, a warm water plate heat exchange outlet, and a hot water plate heat exchange inlet. The cold water plate heat exchange inlet, the bathroom water outlet, and the warm water plate heat exchange outlet are connected. The water outlet tee includes a hot water inlet and a heating water outlet. The hot water inlet, the hot water plate heat exchange inlet, and the hot water plate heat exchange outlet are connected. The hot water inlet and the heating water outlet are also connected.

[0007] Furthermore, the inlet valve includes a first interface, the three-way valve includes a second interface, the first interface is connected to the second interface, the first interface is inserted into the second interface, the outer wall of the first interface and the inner wall of the second interface are sealed together, the three-way motor includes a sealing end that can move up and down, the second mounting cavity is divided by the sealing end to form a first cavity and a second cavity, the hot water plate outlet, the first interface and the first cavity are connected, the first cavity and the water pump interface are connected or blocked by the sealing end, and the second cavity and the heating return water interface are connected or blocked by the sealing end.

[0008] Furthermore, the second interface is provided with a mounting groove, and a one-way valve is installed in the mounting groove. The first interface and the second cavity are unidirectionally connected through the one-way valve, and the connection direction is from the first interface to the second cavity. A third channel is provided between the inner walls of the mounting groove and the second interface, and the first interface, the third channel and the first cavity are connected.

[0009] Furthermore, a flow sensor is installed in the first mounting cavity, a first channel is provided in the water inlet valve, the cold water inlet is connected to the first channel through the flow sensor, and the first channel is connected to the cold water plate heat exchanger inlet.

[0010] Furthermore, the axis of the cold water inlet is offset from the axis of the first mounting cavity, and the inlet valve is also provided with a second channel arranged laterally, one end of which is connected to the first channel and the other end of which is connected to the cold water plate inlet.

[0011] Furthermore, the water inlet valve includes a first mounting port and a second mounting port, wherein a heating pressure relief valve is installed in the first mounting port and a bathroom pressure relief valve is installed in the second mounting port.

[0012] Furthermore, the outlet valve includes a third interface, the outlet tee includes a fourth interface, the third interface is connected to the fourth interface, and the hot water inlet, the third interface and the hot water plate heat exchanger inlet are connected.

[0013] Furthermore, the water outlet valve has a fourth channel inside, through which the bathroom water outlet and the warm water plate outlet are connected. The side of the water outlet valve has a fourth mounting port, in which a temperature sensor is installed. The sensing end of the temperature sensor is located above the bathroom water outlet.

[0014] Furthermore, the lower part of the water outlet valve is provided with a third installation port, and a water supply valve is installed in the third installation port. The water outlet valve is provided with a fifth channel inside, and the fifth channel is connected to the hot water plate heat exchange inlet. The warm water plate heat exchange outlet is connected to or blocked from the fifth channel through the water supply valve. The side of the water outlet tee is provided with a fifth installation port, and a water pressure switch is installed in the fifth installation port. The water pressure switch is connected to the inside of the water outlet tee. The water outlet tee includes a sixth channel, and a drain valve is provided at one end of the sixth channel.

[0015] Furthermore, the three-way motor includes an inner liner, and the sealing end is movable up and down to block the lower part of the inner liner or detach from the inner liner. The side wall of the inner liner near the lower end is sealed to the inner wall of the second mounting cavity. The side of the mounting groove is provided with a connecting port, which is connected to a one-way valve and a second cavity respectively. The sealing area of ​​the side wall of the inner liner near the lower end and the second mounting cavity is located between the connecting port and the third channel. The sealing end can abut against or detach from the liquid inlet hole so that the heating return water interface is blocked or connected to the second mounting cavity.

[0016] In summary, this utility model has the following beneficial effects:

[0017] 1. Install the three-way motor inside the water inlet module. The three-way motor is used to switch between the hot water pipes after cooling by the plate heat exchanger and after cooling by the underfloor heating. This effectively avoids the sealing end of the three-way motor coming into direct contact with the hot water, which helps to improve the service life of the three-way motor, reduces the probability of heat deformation of the sealing end, and effectively reduces scale buildup on the sealing end, thereby helping to improve the quality of the wall-hung boiler product.

[0018] 2. By installing a one-way valve between the heating water circuit and the circulating water circuit, it is possible to effectively prevent water flowing from the heating return pipe into the second chamber of the heating water circuit from entering the circulating water circuit during heating operations. In this embodiment, the one-way valve has an initial opening pressure. That is, when there is a blockage in the heating circuit, hot water flows through the circulating water circuit, and when the pressure in the circulating water circuit exceeds the opening pressure value of the one-way valve, the one-way valve opens, and the circulating water circuit and the heating water circuit can be connected. The hot water returns to the wall-hung boiler through the water pump interface, preventing the wall-hung boiler from dry burning. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of this embodiment from a first-view perspective;

[0020] Figure 2 This is a structural schematic diagram of this embodiment from a second perspective;

[0021] Figure 3 This is a structural schematic diagram of the water inlet module from a first-view perspective.

[0022] Figure 4 This is a structural schematic diagram of the water inlet module from a second-view perspective.

[0023] Figure 5 This is a sectional view of the main view of the water inlet module;

[0024] Figure 6 for Figure 5 Enlarged view at point A;

[0025] Figure 7 This is a sectional view of the side view of the water inlet module;

[0026] Figure 8 This is a sectional view of the main view of the water outlet module;

[0027] Figure 9 This is a sectional view of the top view of the outlet valve;

[0028] Figure 10 This is a schematic diagram of the water circuit connection between the inlet valve and the outlet valve.

[0029] Reference numerals: 1. Inlet valve; 11. Cold water inlet; 12. First mounting cavity; 13. Cold water plate inlet; 14. Hot water plate outlet; 15. First channel; 16. Second channel; 17. First interface; 18. First mounting port; 19. Second mounting port; 2. Three-way valve; 21. Heating return water interface; 22. Second mounting cavity; 221. First cavity; 222. Second cavity; 23. Second interface; 24. Pump interface; 25. Liquid inlet hole; 26. Mounting groove; 27. Connecting port; 28. Third channel; 3. Outlet valve; 31. Bathroom outlet; 32. Hot water plate outlet 33. Hot water inlet; 34. Third interface; 35. Fourth channel; 36. Third installation port; 37. Fourth installation port; 38. Fifth channel; 4. Outlet tee; 41. Hot water inlet; 42. Fourth interface; 43. Fifth installation port; 44. Heating outlet; 45. Sixth channel; 5. Flow sensor; 6. Tee motor; 61. Liner; 62. Sealing end; 7. Check valve; 8. Heating pressure relief valve; 9. Bathroom pressure relief valve; 100. Water supply valve; 200. Temperature sensor; 300. Heat exchanger; 400. Water pressure switch; 500. Drain valve; 600. Bracket. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 10As shown, this embodiment discloses a front-mounted plate heat exchanger water circuit module, including an inlet module and an outlet module. The inlet module and the outlet module are connected by a plate heat exchanger 300. The plate heat exchanger 300 is prior art, and its specific structure will not be described in detail in this specification. Both the inlet module and the outlet module are fixed on the bracket 600.

[0032] like Figure 7 As shown, the water inlet module includes an inlet valve 1 and a three-way valve 2. The inlet valve 1 includes a cold water inlet 11, a first mounting cavity 12, a cold water plate heat exchanger inlet 13, and a hot water plate heat exchanger outlet 14. The cold water plate heat exchanger inlet 13 and the hot water plate heat exchanger outlet 14 are respectively connected to the plate heat exchanger 300. The cold water inlet 11, the first mounting cavity 12, and the cold water plate heat exchanger inlet 13 are connected. A flow sensor 5 is installed in the first mounting cavity 12. The flow sensor 5 is prior art, and its specific structure will not be described in detail in this specification. The inlet valve 1 has a first channel 15. The cold water inlet 11 is connected to the first channel 15 via the flow sensor 5. The first channel 15 is connected to the cold water plate heat exchanger inlet 13. The inlet valve 1 is also provided with a horizontally arranged second channel 16. One end of the second channel 16 is connected to the first channel 15 and the other end is connected to the cold water plate heat exchanger inlet 13. External cold water (tap water) enters from the cold water inlet 11 and passes through the first mounting cavity 12, the flow sensor 5, the first channel 15, the second channel 16 and the cold water plate heat exchanger inlet 13 in sequence, and finally enters the plate heat exchanger 300 for heat exchange.

[0033] The axis of the cold water inlet 11 is offset from the axis of the first mounting cavity 12. The first mounting cavity 12 is set outwards. By offsetting the axis, space is made for the features of the first channel 15, so that the first mounting cavity 12 can be connected to the cold water plate heat exchanger inlet 13. The structure is simple and the design is reasonable.

[0034] like Figure 5 and Figure 6As shown, the three-way valve 2 includes a heating return water interface 21, a second mounting cavity 22, and a water pump interface 24. A three-way motor 6 is installed in the second mounting cavity 22. The heating return water interface 21 and the water pump interface 24 are connected or disconnected through the three-way motor 6. The hot water plate outlet 14 is connected or disconnected from the water pump interface 24 through the three-way motor 6. A water pump can be connected to the water pump interface 24. Specifically, the inlet valve 1 includes a first interface 17, and the three-way valve 2 includes a second interface 23. The first interface 17 is connected to the second interface 23. Interface 17 is inserted into the second interface 23. The outer wall of the first interface 17 is sealed to the inner wall of the second interface 23. The three-way motor 6 includes a sealing end 62 that can move up and down. The second mounting cavity 22 is divided by the sealing end 62 to form a first cavity 221 and a second cavity 222. The hot water plate outlet 14, the first interface 17 and the first cavity 221 are connected. The first cavity 221 and the water pump interface 24 are connected or blocked by the sealing end 62. The second cavity 222 and the heating return water interface 21 are connected or blocked by the sealing end 62.

[0035] The sealing end 62 is moved up and down by a three-way motor 6, which is existing technology. This switches the pipeline connected to the water pump interface 24. When the heating return water interface 21 is blocked from the water pump interface 24, the hot water in the heat exchanger 300, after being cooled by heat exchange, can enter the inlet valve 1 from the hot water heat exchanger outlet 14, pass through the first interface 17 and the first cavity 221, pass over the sealing end 62, and flow out from the water pump interface 24. It is then pumped by the water pump at the water pump interface 24 to the boiler (not shown in the figure) for reheating. When the heating return water interface 21 is connected to the water pump interface 24... At that time, the hot water, after being cooled by the underfloor heating (not shown in the figure), enters the second chamber 222 from the heating return water interface 21, and then flows out from the water pump interface 24. It can be seen that by installing the three-way motor 6 in the water inlet module, the three-way motor 6 is used to switch the hot water pipe after being cooled by the plate heat exchanger 300 and the hot water pipe after being cooled by the underfloor heating. This effectively avoids the sealing end 62 of the three-way motor 6 from directly contacting the hot water, which is conducive to improving the service life of the three-way motor 6, reducing the probability of heat deformation of the sealing end 62, and also effectively reducing scale buildup at the sealing end 62, thereby improving the quality of the wall-hung boiler product.

[0036] like Figure 6As shown, the second interface 23 is provided with a mounting groove 26, and a one-way valve 7 is installed in the mounting groove 26. The one-way valve 7 is prior art, and its specific structure will not be described in detail in this specification. The first interface 17 and the second cavity 222 are unidirectionally connected through the one-way valve 7, and the connection direction is from the first interface 17 to the second cavity 222. A third channel 28 is provided between the inner walls of the mounting groove 26 and the second interface 23. The first interface 17, the third channel 28 and the first cavity 221 are connected. The three-way motor 6 includes a liner 61, and the sealing end... The 62 can move up and down to block or detach from the lower part of the inner liner 61. The side wall of the inner liner 61 near the lower end is sealed to the inner wall of the second mounting cavity 22. The mounting groove 26 has a connecting port 27 on its side. The connecting port 27 is connected to the one-way valve 7 and the second cavity 222 respectively. The sealing area between the side wall of the inner liner 61 near the lower end and the second mounting cavity 22 is located between the connecting port 27 and the third channel 28. The sealing end 62 can abut or detach from the liquid inlet hole 25 so that the heating return water interface 21 is blocked or connected to the second mounting cavity 22.

[0037] By installing a one-way valve 7 between the heating water circuit and the circulating water circuit, it is possible to effectively prevent water flowing from the heating return water interface 21 into the second chamber 222 from entering the circulating water circuit during heating operations. In this embodiment, the one-way valve 7 has an initial opening pressure. That is, when there is a blockage in the heating circuit, hot water flows through the circulating water circuit, and when the pressure in the circulating water circuit exceeds the opening pressure value of the one-way valve 7, the one-way valve 7 opens, and the circulating water circuit and the heating water circuit can be connected. The hot water returns to the wall-hung boiler through the water pump interface 24, preventing the wall-hung boiler from dry burning.

[0038] The water inlet valve 1 includes a first mounting port 18 and a second mounting port 19. A heating pressure relief valve 8 is installed in the first mounting port 18, and a bathroom pressure relief valve 9 is installed in the second mounting port 19. Both the heating pressure relief valve 8 and the bathroom pressure relief valve 9 are existing technologies, and their specific structures will not be described in detail in this specification.

[0039] The heating pressure relief valve 8 is an external bypass used to relieve pressure on the circulating water circuit. The bathroom pressure relief valve 9 is connected to the cold water inlet 13 and is used to relieve pressure on the bathroom water circuit.

[0040] like Figure 8 and Figure 9As shown, the water outlet module includes a water outlet valve 3 and a water outlet tee 4. The water outlet valve 3 includes a bathroom water outlet 31, a warm water plate heat exchange outlet 32, and a hot water plate heat exchange inlet 33. The cold water plate heat exchange inlet 13, the bathroom water outlet 31, and the warm water plate heat exchange outlet 32 ​​are connected. The water outlet tee 4 includes a hot water inlet 41 and a heating water outlet 44. The hot water inlet 41, the hot water plate heat exchange inlet 33, and the hot water plate heat exchange outlet 14 are connected. The hot water inlet 41 and the heating water outlet 44 are connected. Specifically, the water outlet valve 3 includes a third interface 34, and the water outlet tee 4 includes a fourth interface 42. The third interface 34 and the fourth interface 42 are connected. The hot water inlet 41, the third interface 34, and the hot water plate heat exchange inlet 33 are connected.

[0041] like Figure 1 , Figure 2 and Figure 10 As shown, cold water enters the heat exchanger 300 from the cold water inlet 13, and hot water enters from the hot water inlet 41 and then from the hot water inlet 33. After heat exchange, the heated cold water flows from the warm water outlet 32 ​​into the outlet valve 3 and finally flows out from the bathroom outlet 31 for bathroom use. The cooled hot water flows from the hot water outlet 14 into the inlet valve 1 and then flows out from the pump interface 24 through the three-way motor 6 for reheating. When heating, hot water enters from the hot water inlet 41 and then flows into the underfloor heating system from the heating outlet 44. After being cooled by the underfloor heating system, the hot water flows into the three-way valve 2 from the heating return interface 21.

[0042] The heating water circuit is as follows: hot water inlet 41 - heating outlet 44 - underfloor heating (not shown in the figure) - heating return water interface 21 - second cavity 222 - water pump interface 24 - water pump (not shown in the figure) - boiler (not shown in the figure) - hot water inlet 41;

[0043] The circulating water circuit is as follows: hot water inlet 41 - hot water plate heat exchanger inlet 33 - plate heat exchanger 300 - hot water plate heat exchanger outlet 14 - first interface 17 - third channel 28 - first cavity 221 - second cavity 222 - water pump interface 24 - water pump - boiler - hot water inlet 41;

[0044] The bathroom water supply circuit is as follows: cold water inlet 11 - cold water plate heat exchanger inlet 13 - plate heat exchanger 300 - warm water plate heat exchanger outlet 32 ​​- bathroom water outlet 31.

[0045] like Figure 8 and Figure 9As shown, the water outlet valve 3 has a fourth channel 35 inside. The bathroom water outlet 31 and the warm water plate outlet 32 ​​are connected through the fourth channel 35. The side of the water outlet valve 3 has a fourth mounting port 37. A temperature sensor 200 is installed in the fourth mounting port 37. The sensing end of the temperature sensor 200 is located above the bathroom water outlet 31. The temperature sensor 200 is existing technology. By setting the temperature sensor 200 above the bathroom water outlet 31, the water temperature of the bathroom water outlet can be detected.

[0046] The lower part of the outlet valve 3 is provided with a third installation port 36, and a water supply valve 100 is installed in the third installation port 36. The outlet valve 3 is provided with a fifth channel 38 inside, and the fifth channel 38 is connected to the hot water plate exchange inlet 33. The warm water plate exchange outlet 32 ​​is connected to or blocked from the fifth channel 38 through the water supply valve 100. The side of the outlet tee 4 is provided with a fifth installation port 43, and a water pressure switch 400 is installed in the fifth installation port 43. The water pressure switch 400 is connected to the interior of the outlet tee 4. The outlet tee 4 includes a sixth channel 45, and a drain valve 500 is provided at one end of the sixth channel 45. The water supply valve 100, the water pressure switch 400 and the drain valve 500 are all existing technologies, and their specific structures and working principles are not described in detail in this specification.

[0047] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A front-panel water circuit replacement module, characterized in that, Includes inlet and outlet modules; The water inlet module includes an inlet valve (1) and a three-way valve (2). The inlet valve (1) includes a cold water inlet (11), a first mounting cavity (12), a cold water plate exchange inlet (13), and a hot water plate exchange outlet (14). The cold water inlet (11), the first mounting cavity (12), and the cold water plate exchange inlet (13) are connected. The three-way valve (2) includes a heating return water interface (21), a second mounting cavity (22), and a water pump interface (24). A three-way motor (6) is installed in the second mounting cavity (22). The heating return water interface (21) and the water pump interface (24) are connected or blocked through the three-way motor (6). The hot water plate exchange outlet (14) and the water pump interface (24) are connected or blocked through the three-way motor (6). The water outlet module includes a water outlet valve (3) and a water outlet tee (4). The water outlet valve (3) includes a bathroom water outlet (31), a warm water plate exchange outlet (32), and a hot water plate exchange inlet (33). The cold water plate exchange inlet (13), the bathroom water outlet (31), and the warm water plate exchange outlet (32) are connected. The water outlet tee (4) includes a hot water inlet (41) and a heating water outlet (44). The hot water inlet (41), the hot water plate exchange inlet (33), and the hot water plate exchange outlet (14) are connected. The hot water inlet (41) and the heating water outlet (44) are connected.

2. The front-panel water exchange module according to claim 1, characterized in that, The inlet valve (1) includes a first interface (17), the three-way valve (2) includes a second interface (23), the first interface (17) and the second interface (23) are connected, the three-way motor (6) includes a sealing end (62) that can move up and down, the second mounting cavity (22) is separated by the sealing end (62) to form a first cavity (221) and a second cavity (222), the hot water plate outlet (14), the first interface (17) and the first cavity (221) are connected, the first cavity (221) and the water pump interface (24) are connected or blocked by the sealing end (62), and the second cavity (222) and the heating return water interface (21) are connected or blocked by the sealing end (62).

3. A front-panel water circuit module according to claim 2, characterized in that, The second interface (23) is provided with an installation groove (26), and a one-way valve (7) is installed in the installation groove (26). The first interface (17) and the second cavity (222) are connected in one direction through the one-way valve (7), and the connection direction is from the first interface (17) to the second cavity (222). A third channel (28) is provided between the inner wall of the installation groove (26) and the second interface (23). The first interface (17), the third channel (28) and the first cavity (221) are connected.

4. A front-panel water exchange module according to claim 1, characterized in that, A flow sensor (5) is installed in the first mounting cavity (12), and a first channel (15) is provided in the water inlet valve (1). The cold water inlet (11) is connected to the first channel (15) through the flow sensor (5), and the first channel (15) is connected to the cold water plate heat exchanger inlet (13).

5. A front-panel water circuit module according to claim 4, characterized in that, The axis of the cold water inlet (11) is misaligned with the axis of the first mounting cavity (12). The water inlet valve (1) is also provided with a second channel (16) arranged horizontally. One end of the second channel (16) is connected to the first channel (15) and the other end is connected to the cold water plate inlet (13).

6. A front-panel water circuit module according to claim 1, characterized in that, The water inlet valve (1) includes a first mounting port (18) and a second mounting port (19). A heating pressure relief valve (8) is installed in the first mounting port (18), and a bathroom pressure relief valve (9) is installed in the second mounting port (19).

7. A front-panel water circuit module according to claim 1, characterized in that, The outlet valve (3) includes a third interface (34), the outlet tee (4) includes a fourth interface (42), the third interface (34) is connected to the fourth interface (42), and the hot water inlet (41), the third interface (34) and the hot water plate heat exchanger inlet (33) are connected.

8. A front-panel water exchange module according to claim 1, characterized in that, The water outlet valve (3) has a fourth channel (35) inside. The bathroom water outlet (31) and the warm water plate outlet (32) are connected through the fourth channel (35). The side of the water outlet valve (3) has a fourth mounting port (37). A temperature sensor (200) is installed in the fourth mounting port (37). The sensing end of the temperature sensor (200) is located above the bathroom water outlet (31).

9. A front-panel water circuit module according to claim 1, characterized in that, The lower part of the outlet valve (3) is provided with a third installation port (36), and a water supply valve (100) is installed in the third installation port (36). The outlet valve (3) is provided with a fifth channel (38), which is connected to the hot water plate exchange inlet (33). The warm water plate exchange outlet (32) is connected to or blocked from the fifth channel (38) through the water supply valve (100). The side of the outlet tee (4) is provided with a fifth installation port (43), and a water pressure switch (400) is installed in the fifth installation port (43). The water pressure switch (400) is connected to the interior of the outlet tee (4). The outlet tee (4) includes a sixth channel (45), and a drain valve (500) is provided at one end of the sixth channel (45).

10. A front-panel water circuit module according to claim 3, characterized in that, The three-way motor (6) includes an inner liner (61). The sealing end (62) can move up and down to block the lower part of the inner liner (61) or detach from the inner liner (61). The side wall of the inner liner (61) near the lower end is sealed to the inner wall of the second mounting cavity (22). The mounting groove (26) has a connecting port (27) on its side. The connecting port (27) is connected to the one-way valve (7) and the second cavity (222) respectively. The sealing area of ​​the side wall of the inner liner (61) near the lower end and the second mounting cavity (22) is located between the connecting port (27) and the third channel (28). The bottom of the second mounting cavity (22) is provided with a liquid inlet hole (25). The sealing end (62) can abut against or detach from the liquid inlet hole (25) so that the heating return water interface (21) is blocked or connected to the second mounting cavity (22).

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