Instantaneous heater

Abstract

This utility model discloses an instant heater, including a shell, an instant heating element, a circuit board, a thermostat, and a water pump. The circuit board is provided with a power input terminal, a first branch, a second branch, and a power output terminal. The first branch is connected to a drive switch, a thermostat, and the instant heating element in sequence. The second branch is connected to a step-down rectifier module, a control module, and a water pump in sequence. One end of the thermostat is close to the instant heating element. The first branch after the drive switch is also provided with a first welding port and a second welding port of the thermostat, a first welding port of the heating element, and a second connection terminal of the heating element. The control module is provided with a water pump control terminal and a drive switch signal control terminal. The water pump control terminal and the power output terminal are also provided with a first welding port and a second welding port of the water pump. This instant heater has a simple and stable electrical connection between the circuit board, the thermostat, the water pump, and the heating element, and the components are compactly arranged.

Description

Technical Field

[0001] This utility model relates to the field of heating equipment technology, and in particular to an instantaneous heater. Background Technology

[0002] The existing instant heater, as seen in Chinese Utility Model Patent CN221931791U, entitled "Improved Structure of Instant Heating Device," authorized on November 1, 2024, includes an instant heater, a balancing water tank, and an electrical control module. The instant heater has a heating element inside its cavity, and the electrical control module is electrically connected to the heating element. Its distinguishing feature is that it also includes a connecting pipe and a water inlet pipe. One end of the connecting pipe is connected to the water inlet of the instant heater, and the other end is connected to the water inlet of the balancing water tank. The water inlet pipe is connected to the connecting pipe. This improved structure of the instant heating device achieves connection between the water inlet pipe and the instant heater and the balancing water tank through a single connecting pipe. It involves fewer components and has a smaller overall product size, which is beneficial for product packaging and transportation. Furthermore, the connecting pipe can simultaneously supply water to both the instant heater and the balancing water tank, facilitating rapid water level balance between the two.

[0003] However, the instant heating device with the above structure still has the following shortcomings: (1) The heating element is fixed in the inner cavity of the instant heater, while the electrical control module (i.e., the circuit board) and the thermostat are fixed on different outer walls of the instant heater, and the water pump is fixed on the support of the connecting pipe. This makes the electrical control module and the water pump, thermostat and heating element have a large distance. Therefore, the water pump, thermostat and heating element need to be electrically connected to the electrical control module through the electrical wire. On the one hand, multiple electrical wires need to be added, which increases the product cost, and the electrical connection stability of the electrical wire is poor. On the other hand, the overall volume of the product is large. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide an instant heater that has a simple and stable electrical connection between the circuit board and the thermostat, water pump and heating element, and whose components are compactly positioned and the overall product size is small.

[0005] The purpose of this utility model is achieved as follows:

[0006] An instantaneous heater includes a housing, an instantaneous heating element, a circuit board, a thermostat, and a water pump. The instantaneous heating element is fixed inside the housing. The outlet of the water pump is connected to the inlet of the instantaneous heating element, and the inlet of the water pump is connected to an external water source. The circuit board is provided with a power input terminal, a first branch, a second branch, and a power output terminal. A drive switch, a thermostat, and the instantaneous heating element are connected sequentially on the first branch. A step-down rectifier module, a control module, and the water pump are connected sequentially on the second branch. The power input terminal has two outputs: one to the first branch and the other to the second branch. The thermostat is positioned close to the instantaneous heating element, and a temperature controller is also provided on the first branch after the drive switch. The control module includes a first welding port for the thermostat, a second welding port for the temperature controller, a first welding port for the heating element, and a second connection terminal for the heating element. The two pins of the temperature controller are directly welded to the first and second welding ports for the temperature controller, respectively. The first electrical connection terminal of the instantaneous heating element is directly welded to the first welding port for the heating element, and the second electrical connection terminal of the instantaneous heating element is electrically connected to the second connection terminal for the heating element. The control module is equipped with a water pump control terminal and a drive switch signal control terminal. A first welding port for the water pump and a second welding port for the water pump are also provided between the water pump control terminal and the power output terminal. The two pins of the water pump are directly welded to the first and second welding ports for the water pump, respectively. The drive switch signal control terminal of the control module is connected to the signal terminal of the drive switch.

[0007] In this instant heater, the thermostat, water pump, and instant heating element are all soldered onto the circuit board. This direct soldering method is relatively simple to operate, and the electrical connection between the thermostat, water pump, and instant heating element and the circuit board is stable and secure, which is conducive to the stable operation of each component. At the same time, this soldering method also makes the thermostat, water pump, instant heating element, and circuit board more compact, resulting in a smaller overall product size, which is conducive to the promotion and application of the product.

[0008] The objective of this utility model can also be achieved by the following technical measures:

[0009] Specifically, it further includes a water outlet seat, which is fitted around one end of the instant heating tube. The water outlet seat has a first water passage cavity that is connected to the instant heating tube. The water outlet seat has multiple evenly spaced locking blocks on its outer periphery. The inner cavity of the outer shell has multiple evenly spaced slots. The locking blocks are inserted into the slots. The water outlet seat has a water outlet pipe that connects to the first water passage cavity and protrudes from the outer shell. By cooperating with the same locking block on the outer periphery of the water outlet seat and different slots on the outer shell, the water outlet seat can be installed at different angles (rotation directions) on the outer shell, so that the water outlet pipe on the water outlet seat can face different directions to meet the usage requirements of different water outlet angles.

[0010] Specifically, it further includes a water inlet seat and a first water pipe. The water inlet seat is sleeved on the outer periphery of the other end of the instant heating tube. The water inlet seat is provided with a second water passage cavity and the second water passage cavity is connected to the instant heating tube. The water inlet seat has a water inlet that connects to the second water passage cavity. One end of the first water pipe is connected to the water inlet, and the other end of the first water pipe is connected to the outlet of the water pump. This allows the water discharged by the water pump to pass through the first water pipe and the water inlet seat in sequence and then enter the instant heating tube for heating.

[0011] Specifically, it further includes a second water pipe and a fixing plate. One end of the second water pipe is connected to the inlet of the water pump, and the other end of the second water pipe is connected to an external water source. Both the first water pipe and the second water pipe are connected to the fixing plate. This makes the first water pipe, the second water pipe, and the fixing plate form an integrated water delivery module, making the components more compact.

[0012] Specifically, it further includes a first elastic electrode clamp, which is sleeved on the upper outer periphery of the instant heating tube. The first elastic electrode clamp has an elastic opening. The outer shell includes a left shell and a right shell connected together. The left shell has a left limiting part, and the right shell has a right limiting part. The elastic electrode clamp portion located to the left of the elastic opening extends out to form a first electrode guide piece, and one side of the first electrode guide piece abuts against the left limiting part. The first elastic electrode clamp portion located to the right of the elastic opening abuts against the right limiting part. The first electrode guide piece is welded to the first welding port of the heating tube, and the first electrode guide piece constitutes the first electrical connection end. The first elastic electrode clamp is restricted and fixed by the cooperation of the left limiting part and the right limiting part, so that the first elastic electrode clamp can be stably installed on the outer periphery of the instant heating tube, and thus the first electrode guide piece can be stably welded to the first welding port of the heating tube. That is, the elastic electrode clamp can be fixed to the instant heating tube by the connected left shell and right shell. Its design is ingenious and has a good implementation effect.

[0013] Furthermore, the other end of the instant heating tube is provided with a second electrode guide plate, and the extension direction of the second electrode guide plate is opposite to that of the first electrode guide plate. The second electrode guide plate is electrically connected to the second connection end of the heating tube, and the second electrode guide plate constitutes the second electrical connection end; the implementation effect is good.

[0014] Specifically, it further includes a second elastic electrode clamp, which is fitted around the lower outer periphery of the instant heating tube. The second elastic electrode clamp has the same shape and size as the first elastic electrode clamp. The second electrode guide extends from the second elastic electrode clamp and is connected to the second connection end of the heating tube through an electrical wire. The second elastic electrode clamp and the first elastic electrode clamp have the same shape and size, which facilitates the production and manufacturing of both.

[0015] Specifically, both the left and right housings are provided with a first connecting post and a first connecting screw hole is opened on the first connecting post. The circuit board is provided with a first connecting through hole corresponding to the position of the first connecting screw hole. A connecting screw passes through the first connecting through hole and connects with the first connecting screw hole; so as to achieve a stable connection of the circuit board to the housing. This connection method is simple and convenient to operate.

[0016] Specifically, both the left and right housings are provided with second connecting posts, and the second connecting posts have second connecting screw holes. A connecting ring is fixed to the outer periphery of the water pump, and a second connecting through hole is opened on the connecting ring corresponding to the position of the second connecting screw hole. A connecting screw passes through the second connecting through hole and connects with the second connecting screw hole. The circuit board and the water pump are located on the same outer side of the left and right housings. This facilitates the welding between the water pump and the circuit board, and the installation of the water pump on the outer housing is also relatively firm. Moreover, this connection method is simple and convenient to operate.

[0017] The beneficial effects of this utility model are as follows:

[0018] (1) In this instant heater, the thermostat, water pump and instant heating tube are all soldered on the circuit board. This direct soldering method is relatively simple to operate, and the electrical connection between the thermostat, water pump and instant heating tube and the circuit board is stable and firm, which is conducive to the stable operation of each component. At the same time, this soldering method also makes the thermostat, water pump, instant heating tube and circuit board more compact, making the overall size of the product smaller, which is conducive to the promotion and application of the product.

[0019] (2) By using the same card block on the outer periphery of the water outlet seat to cooperate with different card slots on the outer shell, the water outlet seat can be installed at different angles (rotation direction) on the outer shell, so that the water outlet pipe on the water outlet seat can face different directions to meet the usage requirements of different water outlet angles.

[0020] (3) The first elastic electrode clamp is fixed by the cooperation of the left limiting part and the right limiting part, so that the first elastic electrode clamp can be stably installed on the outer periphery of the instant heating tube, and the first electrode guide can be stably welded to the first welding joint of the heating tube. That is, the elastic electrode clamp can be fixed on the instant heating tube by the connected left and right shells. The design is ingenious and the implementation effect is good. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the instantaneous heater of this utility model.

[0022] Figure 2 This is a schematic diagram of the electrical principle of the instantaneous heater of this utility model.

[0023] Figure 3 This is a cross-sectional view of the instantaneous heater of this utility model.

[0024] Figure 4 This is a breakdown diagram of the instantaneous heater of this utility model.

[0025] Figure 5 This is a schematic diagram of the water conveying module of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0027] Implementation examples, in conjunction with Figures 1 to 5 As shown, an instant heater includes a housing 1, an instant heating tube 2, a circuit board 3, a thermostat 4, and a water pump 5. The instant heating tube 2 is fixed in the inner cavity of the housing 1. The outlet 51 of the water pump 5 is connected to the inlet 21 of the instant heating tube 2, and the inlet 52 of the water pump 5 is connected to an external water source. The circuit board 3 is provided with a power input terminal 35, a first branch, a second branch, and a power output terminal 36.

[0028] The first branch is connected to a drive switch 6, a thermostat 4 and an instant heating tube 2 in sequence. The second branch is connected to a step-down rectifier module 8, a control module 9 and a water pump 5 in sequence. The power input terminal 35 is divided into two outputs, one output to the first branch and the other output to the second branch.

[0029] Its characteristic is that one end of the thermostat 4 is close to the instant heating tube 2, and the first branch after the drive switch 6 is also provided with a first welding port 31 of the thermostat, a second welding port 32 of the thermostat, a first welding port 33 of the heating tube and a second connection end 34 of the heating tube. The two poles of the thermostat 4 are directly welded to the first welding port 31 and the second welding port 32 of the thermostat, respectively. The first electrical connection end 22 of the instant heating tube 2 is directly welded to the first welding port 33 of the heating tube, and the second electrical connection end 23 of the instant heating tube 2 is electrically connected to the second connection end 34 of the heating tube.

[0030] The control module 9 is provided with a water pump control terminal 91 and a drive switch signal control terminal 92. The water pump control terminal 91 and the power output terminal 36 are also provided with a first water pump welding port 37 and a second water pump welding port 38. The two poles of the water pump 5 are directly welded to the first water pump welding port 37 and the second water pump welding port 38 respectively. The drive switch signal control terminal 92 of the control module 9 is connected to the signal terminal of the drive switch 6.

[0031] As a specific solution, it also includes a water outlet seat 10, which is sleeved on the outer periphery of one end of the instant heating tube 2. The water outlet seat 10 is provided with a first water passage cavity 101 and the first water passage cavity 101 is connected to the instant heating tube 2. The outer periphery of the water outlet seat 10 is provided with a plurality of evenly spaced locking blocks 102. The inner cavity of the outer shell 1 is provided with a plurality of evenly spaced locking slots 11. The locking blocks 102 are inserted into the locking slots 11. The water outlet seat 10 is provided with a water outlet pipe 103 that connects to the first water passage cavity 101 and the water outlet pipe 103 protrudes out of the outer shell 1.

[0032] In this embodiment, a water inlet seat 20 and a first water pipe 30 are also included. The water inlet seat 20 is sleeved on the outer periphery of the other end of the instant heating tube 2. A second water passage cavity 201 is provided inside the water inlet seat 20 and the second water passage cavity 201 is connected to the instant heating tube 2. The water inlet seat 20 has a water inlet 21 that connects to the second water passage cavity 201. One end of the first water pipe 30 is connected to the water inlet 21, and the other end of the first water pipe 30 is connected to the outlet 51 of the water pump 5.

[0033] In this embodiment, a second water pipe 40 and a fixing plate 50 are also included. One end of the second water pipe 40 is connected to the inlet 52 of the water pump 5, and the other end of the second water pipe 40 is connected to an external water source. The first water pipe 30 and the second water pipe 40 are both connected to the fixing plate 50, so that the first water pipe 30, the second water pipe 40 and the fixing plate 50 constitute an integral water supply module.

[0034] As a preferred embodiment, it also includes a first elastic electrode clamp 60, which is sleeved on the upper outer periphery of the instant heating tube 2. The first elastic electrode clamp 60 is provided with an elastic opening 601. The outer shell 1 includes a left shell 12 and a right shell 13 connected to each other. The left shell 12 is provided with a left limiting part 121, and the right shell 13 is provided with a right limiting part 131. The first elastic electrode clamp 60 located to the left of the elastic opening 601 extends out to form a first electrode guide piece, and one side of the first electrode guide piece abuts against the left limiting part 121. The elastic electrode clamp located to the right of the elastic opening 601 abuts against the right limiting part 131. The first electrode guide piece is welded to the first welding port 33 of the heating tube, and the first electrode guide piece constitutes the first electrical connection end 22.

[0035] In this embodiment, the other end of the instant heating tube 2 is provided with a second electrode guide plate, and the extension direction of the second electrode guide plate is opposite to that of the first electrode guide plate. The second electrode guide plate is electrically connected to the second connection end 34 of the heating tube, and the second electrode guide plate constitutes the second electrical connection end 23.

[0036] In this embodiment, a second elastic electrode clamp 70 is also included. The second elastic electrode clamp 70 is sleeved on the lower outer periphery of the instant heating tube 2. The second elastic electrode clamp 70 has the same shape and size as the first elastic electrode clamp 60. The second electrode guide plate extends from the second elastic electrode clamp 70. The second electrode guide plate is connected to the second connection end 34 of the heating tube through an electrical wire; the electrical wire is not shown.

[0037] As a more specific embodiment, both the left housing 12 and the right housing 13 are provided with a first connecting post 80 and a first connecting screw hole 801 is opened on the first connecting post 80. The circuit board 3 is provided with a first connecting through hole 39 corresponding to the position of the first connecting screw hole 801. A connecting screw passes through the first connecting through hole 39 and connects to the first connecting screw hole 801; the connecting screw is not shown.

[0038] In this embodiment, both the left housing 12 and the right housing 13 are provided with a second connecting post 90 and a second connecting screw hole 901 is opened on the second connecting post 90. A connecting ring 53 is fixed on the outer periphery of the water pump 5. A second connecting through hole 54 is opened on the connecting ring 53 corresponding to the position of the second connecting screw hole 901. A connecting screw passes through the second connecting through hole 54 and connects to the second connecting screw hole 901. The circuit board 3 and the water pump 5 are both located on the same outer side of the left housing 12 and the right housing 13; the connecting screw is not shown.

[0039] Working principle: The external power supply is input through the power input terminal 35, and then outputs through the fuse in two branches. The first branch is connected to the drive switch 6, the thermostat 4 and the instant heating element 2 in sequence. The second branch is connected to the step-down rectifier module 8, the control module 9 and the water pump 5 in sequence. The drive switch 6 can be a normally open thyristor.

[0040] During operation, external AC power enters the step-down rectifier module 8 of the second branch after passing through the power input terminal 35 and the overcurrent fuse. After step-down rectification, it passes through the control module 9 and the water pump 5 in sequence before returning to the power output terminal 36 to enable the operation of the control module 9 and the water pump 5.

[0041] When the control module 9 is powered on, it sends a start signal to the drive switch 6 through the transistor, causing the drive switch 6 to close, thereby turning on the first branch. That is, the external AC power after passing through the fuse passes through the drive switch 6, the thermostat 4 and the instant heating tube 2 in sequence and returns to the power output terminal 36, so as to realize the operation of the thermostat 4 and the instant heating tube 2.

Claims

1. An instant heater, comprising an outer shell (1), an instant heating tube (2), a circuit board (3), a thermostat (4), and a water pump (5), wherein the instant heating tube (2) is fixed in the inner cavity of the outer shell (1), the outlet (51) of the water pump (5) is connected to the inlet (21) of the instant heating tube (2), and the inlet (52) of the water pump (5) is connected to an external water source, and the circuit board (3) is provided with a power input terminal (35), a first branch, a second branch, and a power output terminal (36). The first branch is connected to a drive switch (6), a thermostat (4) and an instant heating tube (2) in succession. The second branch is connected to a step-down rectifier module (8), a control module (9) and a water pump (5) in succession. The power input terminal (35) is divided into two outputs, one output to the first branch and the other output to the second branch. characterized in that One end of the thermostat (4) is close to the instant heating tube (2). The first branch after the drive switch (6) is also provided with a first welding port (31) of the thermostat, a second welding port (32) of the thermostat, a first welding port (33) of the heating tube and a second connection end (34) of the heating tube. The two poles of the thermostat (4) are directly welded to the first welding port (31) and the second welding port (32) of the thermostat, respectively. The first electrical connection end (22) of the instant heating tube (2) is directly welded to the first welding port (33) of the heating tube. The second electrical connection end (23) of the instant heating tube (2) is electrically connected to the second connection end (34) of the heating tube. The control module (9) is provided with a water pump control terminal (91) and a drive switch signal control terminal (92). The water pump control terminal (91) and the power output terminal (36) are also provided with a water pump first welding port (37) and a water pump second welding port (38). The two poles of the water pump (5) are directly welded to the water pump first welding port (37) and the water pump second welding port (38) respectively. The drive switch signal control terminal (92) of the control module (9) is connected to the signal terminal of the drive switch (6).

2. The instant heater of claim 1 wherein, It also includes a water outlet seat (10), which is fitted around one end of the instant heating tube (2). The water outlet seat (10) has a first water passage cavity (101) and is connected to the instant heating tube (2). The water outlet seat (10) has multiple evenly spaced locking blocks (102) around its outer periphery. The inner cavity of the outer shell (1) has multiple evenly spaced slots (11). The locking blocks (102) are inserted into the slots (11). The water outlet seat (10) has a water outlet pipe (103) that connects to the first water passage cavity (101) and the water outlet pipe (103) protrudes from the outer shell (1).

3. The instant heater of claim 2 wherein, It also includes a water inlet seat (20) and a first water pipe (30). The water inlet seat (20) is fitted around the other end of the instant heating pipe (2). A second water passage cavity (201) is provided inside the water inlet seat (20) and the second water passage cavity (201) is connected to the instant heating pipe (2). The water inlet seat (20) has a water inlet (21) that connects to the second water passage cavity (201). One end of the first water pipe (30) is connected to the water inlet (21), and the other end of the first water pipe (30) is connected to the outlet (51) of the water pump (5).

4. The instant heater of claim 3 wherein, It also includes a second water pipe (40) and a fixing plate (50). One end of the second water pipe (40) is connected to the inlet (52) of the water pump (5), and the other end of the second water pipe (40) is connected to an external water source. The first water pipe (30) and the second water pipe (40) are both connected to the fixing plate (50).

5. The instant heater of claim 1 wherein, It also includes a first elastic electrode clamp (60), which is sleeved on the upper outer periphery of the instant heating tube (2). The first elastic electrode clamp (60) is provided with an elastic opening (601). The outer shell (1) includes a left shell (12) and a right shell (13) connected to each other. The left shell (12) is provided with a left limiting part (121), and the right shell (13) is provided with a right limiting part (131). The first elastic electrode clamp (60) located to the left of the elastic opening (601) extends out a first electrode guide piece, and one side of the first electrode guide piece abuts against the left limiting part (121). The elastic electrode clamp located to the right of the elastic opening (601) abuts against the right limiting part (131). The first electrode guide piece is welded to the first welding port (33) of the heating tube. The first electrode guide piece constitutes the first electrical connection end (22).

6. The instant heater of claim 5 wherein, The other end of the instant heating tube (2) is provided with a second electrode guide plate, and the extension direction of the second electrode guide plate is opposite to that of the first electrode guide plate. The second electrode guide plate is electrically connected to the second connection end (34) of the heating tube, and the second electrode guide plate constitutes the second electrical connection end (23).

7. The instant heater of claim 6 wherein, It also includes a second elastic electrode clamp (70), which is fitted around the lower end of the instant heating tube (2). The second elastic electrode clamp (70) has the same shape and size as the first elastic electrode clamp (60). The second electrode guide extends from the second elastic electrode clamp (70), and the second electrode guide is connected to the second connection end (34) of the heating tube through an electrical wire.

8. The instant heater of claim 5 wherein, The left housing (12) and the right housing (13) are each provided with a first connecting post (80) and a first connecting screw hole (801) is opened on the first connecting post (80). The circuit board (3) is provided with a first connecting through hole (39) corresponding to the first connecting screw hole (801). A connecting screw passes through the first connecting through hole (39) and connects to the first connecting screw hole (801).

9. The instant heater of claim 8 wherein, The left housing (12) and the right housing (13) are each provided with a second connecting post (90) and a second connecting screw hole (901) is opened on the second connecting post (90). A connecting ring (53) is fixed on the outer periphery of the water pump (5). A second connecting through hole (54) is opened on the connecting ring (53) corresponding to the position of the second connecting screw hole (901). A connecting screw passes through the second connecting through hole (54) and connects to the second connecting screw hole (901). The circuit board (3) and the water pump (5) are both located on the same outer side of the left housing (12) and the right housing (13).

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