Instant heater

Abstract

An instant heater comprises a liquid conveying device used for conveying liquid and a heating component used for heating the liquid in the liquid conveying device, the liquid conveying device is provided with a liquid conveying cavity, a first water inlet and a first water outlet, and the first water inlet and the first water outlet are communicated with the liquid conveying cavity. The heating component is arranged in the liquid feeding cavity so that liquid can make direct contact with the heating component, the heating component forms a guiding structure used for guiding the liquid to flow, the heating component and the liquid feeding device enable a direct heating water channel used for liquid flowing to be formed in the liquid feeding cavity, and the first water inlet is located in the head end of the direct heating water channel. The first water outlet is located at the tail end of the direct-heating water channel. The utility model provides an instant heating type heater which improves the heat exchange efficiency of liquid and the heat exchange effect of the instant heating type heater on the liquid.

Description

Technical Field

[0001] The utility model belongs to the field of electrothermal equipment, and particularly relates to an instant heater. Background Art

[0002] The instant heater has the characteristics of instantaneously heating a liquid and obtaining a high-temperature liquid, and is applied to liquid heating appliances such as water heaters, water dispensers, coffee machines, etc.; in a conventional instant heater, heating elements such as heating wires or thick-film heaters are laid outside a flow cavity or a flow channel, and when the heating element works, the outside of the flow cavity is heated, and the heat is transferred to the liquid in the flow cavity through heat transfer to heat the liquid, so as to heat the liquid, or by directly arranging a heating element such as a heating tube in the flow cavity, so that the heat of the heating element directly heats the liquid in the flow cavity, so as to heat the liquid. The problem is that for the instant heater with the above structure, when it works, when the liquid enters the flow cavity and flows, the heating element heats it. Limited by the length of the flow cavity, the liquid in the flow cavity is output outside the flow cavity before being fully heat-exchanged. The heat exchange effect of the instant heater on the liquid is poor, resulting in the temperature of the heated liquid not reaching the requirements of consumers and unable to meet the use needs of consumers. Moreover, in order to improve the heat exchange effect of the instant heater, a heating element with a high power needs to be used, which increases the manufacturing cost and use cost of the instant heater.

[0003] Therefore, further improvement is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to at least overcome one of the above-mentioned deficiencies in the prior art, and to provide an instant heater, which improves the heat exchange efficiency of the liquid and the heat exchange effect of the instant heater on the liquid.

[0005] To achieve the above purpose, the technical solution provided by the embodiment of the utility model is:

[0006] An instant heater includes a liquid delivery device for delivering a liquid and a heating component for heating the liquid in the liquid delivery device. The liquid delivery device is provided with a liquid delivery cavity, a first water inlet and a first water outlet communicating with the liquid delivery cavity. The heating component is arranged in the liquid delivery cavity so that the liquid directly contacts the heating component and the heating component forms a guiding structure for guiding the liquid flow. The heating component and the liquid delivery device form a direct hot water channel for the liquid to flow in the liquid delivery cavity. The first water inlet is located at the head end of the direct hot water channel, and the first water outlet is located at the tail end of the direct hot water channel.

[0007] The liquid delivery device includes a liquid delivery housing, a liquid delivery cover plate, and a partition member. The liquid delivery housing is provided with a housing opening communicating with the liquid delivery chamber. The liquid delivery cover plate covers the housing opening and forms a liquid delivery chamber together with the liquid delivery housing. The partition member is provided in several groups in the liquid delivery chamber and is arranged at intervals along the guiding direction of the heating member. The several groups of partition members and the heating member form a straight hot water channel that continuously winds in a horizontal direction in the liquid delivery chamber. The first water inlet is provided on the liquid delivery housing, and the first water outlet is provided on the liquid delivery cover plate.

[0008] The heating member is provided in one group and extends along the front-rear direction of the liquid delivery chamber and is arranged along the left-right direction of the liquid delivery chamber. The several groups of partition members and the heating member form a first straight hot water channel and a second straight hot water channel that are connected end to end. The first water inlet is located at the head end of the first straight hot water channel, and the first water outlet is located at the tail end of the second straight hot water channel.

[0009] The heating member is continuously and circuitously arranged along the front-rear direction of the liquid delivery chamber. The several groups of partition members are arranged at intervals along the guiding direction of the heating member. The vertical projection of the partition member is linear. The first straight hot water channel is continuously and circuitously arranged along the front-rear direction of the liquid delivery chamber and is located behind the heating member. The second straight hot water channel is continuously and circuitously arranged along the front-rear direction of the liquid delivery chamber and is located in front of the heating member.

[0010] The vertical projection of the heating member is in the shape of an 'n'. The partition member is provided in one group and is located inside the heating member. The vertical projection of the partition member is in the shape of an 'n'. The vertical projection of the first straight hot water channel is in the shape of an 'n' and is located behind the heating member, and the vertical projection of the second straight hot water channel is in the shape of an 'n' and is located in front of the heating member.

[0011] A first liquid delivery gap for communicating the first straight hot water channel and the second straight hot water channel is provided in the liquid delivery chamber. The first liquid delivery gap is provided on the top surface of the liquid delivery chamber and is located between the tail end of the first straight hot water channel and the head end of the second straight hot water channel.

[0012] The number of the heating members is at least two and they are arranged at intervals along the left-right direction of the liquid delivery chamber. The vertical projection of the heating member is linear so that the liquid delivery chamber forms at least three groups of third straight hot water channels. The third straight hot water channels extend along the front-rear direction of the liquid delivery chamber. The several groups of partition members are respectively provided in the third straight hot water channels between adjacent two groups of heating members. The third straight hot water channels and the partition members form a straight hot water channel that continuously winds in a horizontal direction in the liquid delivery chamber. The first water inlet is located at the head end of the first section of the third straight hot water channel, and the first water outlet is located at the tail end of the last section of the third straight hot water channel.

[0013] A second liquid delivery gap for communicating adjacent two groups of third straight hot water channels is provided in the liquid delivery chamber. The second liquid delivery gaps are provided in five groups on the top surface of the liquid delivery chamber and are located between adjacent two groups of third straight hot water channels.

[0014] The liquid delivery device further includes a sealing member for sealing the liquid delivery cavity. The sealing member is disposed between the liquid delivery housing and the liquid delivery cover plate, and is made of rubber material or silica gel material.

[0015] The liquid delivery device is provided with a preheating structure having a preheating water channel. The preheating water channel is correspondingly arranged with a heating component, at least part of the preheating water channel extends along the track of the heating component, and the output end of the preheating water channel is communicated with the input end of the direct hot water channel;

[0016] The preheating structure includes a preheating covering member. The preheating covering member is disposed on the liquid delivery device, the preheating covering member is externally disposed on the outer end face of the liquid delivery device, the preheating water channel is located on the preheating covering member, and a second water inlet is provided on the preheating covering member and is communicated with the input end of the preheating water channel;

[0017] Alternatively, the preheating structure includes a groove portion disposed on the liquid delivery device and located outside the heating component. A partition plate is provided in the liquid delivery cavity so that a preheating water channel is formed between the groove portion and the partition plate. The preheating water channel and the direct hot water channel are respectively located on both sides of the partition plate, and a water passing port for communicating the preheating water channel and the direct hot water channel is provided on the partition plate.

[0018] The beneficial effects of the present utility model are as follows:

[0019] By providing a direct hot water channel in the liquid delivery cavity in the present utility model, the direct hot water channel is jointly constituted by the heating component and the liquid delivery device, which not only increases the flow length of the liquid flowing through the liquid delivery cavity, but also enables the heating component to directly contact the liquid in the direct hot water channel and heat it, so that the liquid can achieve complete heat exchange in the liquid delivery cavity, improving the heat exchange efficiency of the instant heating heat exchanger for the liquid, improving the heat exchange effect of the instant heater for the liquid, and meeting the heat exchange effect of the instant heater for the liquid without using a high-power heating device, reducing the manufacturing cost and use cost of the instant heater. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an instant heater according to the first embodiment of the present utility model.

[0021] Figure 2 It is a schematic structural diagram of an instant heater according to the first embodiment of the present utility model.

[0022] Figure 3 It is an exploded view of an instant heater according to the first embodiment of the present utility model.

[0023] Figure 4 It is an exploded view of an instant heater according to the first embodiment of the present utility model.

[0024] Figure 5Cross-sectional view of the instant heating heater according to the first embodiment of the present utility model.

[0025] Figure 6 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0026] Figure 7 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0027] Figure 8 Bottom view of the liquid delivery housing according to the first embodiment of the present utility model.

[0028] Figure 9 Schematic diagram of liquid flow of the preheating component according to the first embodiment of the present utility model.

[0029] Figure 10 Schematic diagram of liquid flow of the liquid delivery device according to the first embodiment of the present utility model.

[0030] Figure 11 Cross-sectional view of the instant heating heater according to the first embodiment of the present utility model.

[0031] Figure 12 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0032] Figure 13 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0033] Figure 14 Bottom view of the liquid delivery housing according to the first embodiment of the present utility model.

[0034] Figure 15 Schematic diagram of liquid flow of the liquid delivery device according to the first embodiment of the present utility model.

[0035] Figure 16 Cross-sectional view of the instant heating heater according to the first embodiment of the present utility model.

[0036] Figure 17 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0037] Figure 18 Exploded view of the liquid delivery device according to the first embodiment of the present utility model.

[0038] Figure 19 Cross-sectional view of the instant heating heater according to the second embodiment of the present utility model.

[0039] Figure 20 Exploded view of the liquid delivery device according to the second embodiment of the present utility model.

[0040] Figure 21 Exploded view of the liquid delivery device according to the second embodiment of the present utility model.

[0041] Figure 22 It is the bottom view of the liquid delivery housing of the second embodiment of the present utility model.

[0042] Figure 23 It is the schematic diagram of the liquid flow of the liquid delivery device of the second embodiment of the present utility model. Specific embodiments

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model.

[0044] The first embodiment:

[0045] See Figure 1-18, this instant - heating heater includes a liquid - feeding device 1 and a heating component 2. The liquid - feeding device 1 is provided with a liquid - feeding cavity 101, a first water inlet 102 communicating with the liquid - feeding cavity 101, a first water outlet 103, and a first joint 108. Specifically, the liquid - feeding device 1 includes a liquid - feeding housing 104, a liquid - feeding cover plate 105, and a partitioning component 106. The liquid - feeding housing 104 is provided with a housing opening 1041 communicating with the liquid - feeding cavity 101. The liquid - feeding cover plate 105 covers the housing opening 1041 and jointly forms the liquid - feeding cavity 101 with the liquid - feeding housing 104. The partitioning component 106 is arranged in the liquid - feeding cavity 101. The number of the partitioning components 106 is preferably several groups and is arranged at intervals along the setting direction of the heating component 2. The heating component 2 is preferably a heating tube and is installed in the liquid - feeding cavity 101 by means such as ultrasonic welding, so that the liquid directly contacts the heating component 2 and is heated, and the heating component 2 constitutes a guiding structure for guiding the liquid to flow. The heating component 2 and the liquid - feeding device 1 form a direct - hot water channel for the liquid to flow in the liquid - feeding cavity 101. The first water inlet 102 is arranged on the liquid - feeding housing 104 and is located at the head end of the direct - hot water channel to communicate with an external liquid - feeding source and the liquid - feeding cavity 101, so that the unheated liquid enters the liquid - feeding cavity 101. The first water outlet 103 is arranged on the liquid - feeding cover plate 105 and is located at the tail end of the direct - hot water channel. The first joint 108 is detachably installed on the first water outlet 103 to communicate the liquid - feeding cavity 101 with an external liquid - discharging source, so that the heated liquid is output outside the liquid - feeding cavity 101. The direct - hot water channel is jointly formed by several groups of partitioning components 106 and the heating component 2, and the direct - hot water channel is continuously and circuitously arranged along the front - to - back direction of the liquid - feeding cavity 101, extending the flow length of the liquid in the liquid - feeding cavity 101. The direct - hot water channel is arranged on the left and right sides of the heating end of the heating component 2, so that when the liquid passes through the liquid - feeding cavity 101, it can directly contact the left and right sides of the heating end of the heating component 2. After the liquid enters the liquid - feeding cavity 101, not only does the flow length of the liquid flowing through the liquid - feeding cavity 101 increase, but also the heating component can directly contact the liquid in the direct - hot water channel and heat it, enabling the liquid to achieve complete heat exchange in the liquid - feeding cavity 101, improving the heat - exchange efficiency of the instant - heating heat exchanger for the liquid, improving the heat - exchange effect of the instant - heating heater for the liquid, and meeting the heat - exchange effect of the instant - heating heater for the liquid without using a high - power heating device, reducing the manufacturing cost and use cost of the instant - heating heater.

[0046] Furthermore, the structures of the heating component 2 and the partitioning component 106 can have the following solutions:

[0047] See Figure 5-10, the heating component 2 is a group and is continuously arranged in a meandering manner along the front-back direction of the liquid delivery cavity 101 and is arranged along the left-right direction of the liquid delivery cavity 101. The partition component 106 is four groups and is arranged at intervals along the left-right direction of the liquid delivery cavity 101. The vertical projection of the partition component 106 is linear, and adjacent two groups of partition components 106 are respectively connected to the front side wall of the liquid delivery cavity 101 and the rear side wall of the liquid delivery cavity 101. The four groups of partition components 106 and the heating component 2 together divide the liquid delivery cavity 101 into a first straight hot water channel 1011 and a second straight hot water channel 1012 that are connected end to end. The first straight hot water channel 1011 is continuously arranged in a meandering manner along the front-back direction of the liquid delivery cavity 101 and is located behind the heating component 2. The second straight hot water channel 1012 is continuously arranged in a meandering manner along the front-back direction of the liquid delivery cavity 101 and is located in front of the heating component 2. The first water inlet 102 is located at the head end of the first straight hot water channel 1011, and the first water outlet 103 is located at the tail end of the second straight hot water channel 1012;

[0048] See Figure 11-15 , the heating component 2 is a group and is arranged to extend along the front-back direction of the liquid delivery cavity 101. The vertical projection of the heating component 2 is in an n shape. The partition component 106 is a group and is located inside the heating component 2. The vertical projection of the partition component 106 is in an n shape, and one end of it is connected to the front side wall of the liquid delivery cavity 101, and the other end leaves a space with the front side wall of the liquid delivery cavity 101. The group of partition components 106 and the heating component 2 together divide the liquid delivery cavity 101 into a first straight hot water channel 1011 and a second straight hot water channel 1012 that are connected end to end. The vertical projection of the first straight hot water channel 1011 is in an n shape and is located behind the heating component 2. The vertical projection of the second straight hot water channel 1012 is in an n shape and is located in front of the heating component 2. The first water inlet 102 is located at the head end of the first straight hot water channel 1011, and the first water outlet 103 is located at the tail end of the second straight hot water channel 1012;

[0049] Through the above technical solutions, when the liquid passes through the liquid delivery cavity 101, the liquid flows through the first straight hot water channel 1011 and the second straight hot water channel 1012 in sequence, so as to extend the flow length of the liquid in the liquid delivery cavity 101, so that when the liquid flows through the first straight hot water channel 1011 and the second straight hot water channel 1012, it can be in direct contact with the heating component 2 and be heated. Through the above technical solutions, it is realized that the liquid can achieve complete heat exchange in the liquid delivery cavity 101, and the heat exchange efficiency of the instant hot water exchanger for the liquid is improved, which can be understood by those skilled in the art.

[0050] Further, a first liquid delivery notch 1013 is provided in the liquid delivery cavity 101. The number of the first liquid delivery notches 1013 is one group and they are arranged on the inner top surface of the liquid delivery cavity 101 and recessed upward from the inner top surface of the liquid delivery cavity 101. And the first liquid delivery notch 1013 is located between the end of the first straight hot water channel 1011 and the head of the second straight hot water channel 1012. Through the above technical solution, the connection between the first straight hot water channel 1011 and the second straight hot water channel 1012 is realized, which can be understood by those skilled in the art.

[0051] Further, the liquid delivery device 1 further includes a sealing member 107 for sealing the liquid delivery cavity 101. Specifically, in this embodiment, the sealing member 107 is preferably a gasket and is arranged on the outer edge of the housing opening 1041 and located between the liquid delivery housing 104 and the liquid delivery cover plate 105. The sealing member 107 is preferably made of rubber material or silica gel material. When the liquid delivery housing 104 and the liquid delivery cover plate 105 are covered with each other, the sealing member 107 is clamped between them to seal the gap between the liquid delivery housing 104 and the liquid delivery cover plate 105, avoiding the liquid in the liquid delivery cavity 101 from leaking out, which can be understood by those skilled in the art.

[0052] Further, a preheating structure with a preheating water channel 301 is provided on the liquid delivery device 1. The preheating water channel 301 is arranged corresponding to the heating component 2. The preheating water channel 301 extends at least partially along the track of the heating component 2. Specifically, when the heating component 2 is continuously arranged in a meandering manner along the front-back direction of the liquid delivery cavity 101 and arranged in the left-right direction of the liquid delivery cavity 101, the preheating water channel 301 is continuously arranged in a meandering manner along the front-back direction of the preheating component 3 and corresponds to the heating component 2. Or, when the heating component 2 extends along the front-back direction of the liquid delivery cavity 101 and its vertical projection is in an n shape, the vertical projection of the preheating water channel 301 is in an n shape and corresponds to the heating component 2. The output end of the preheating water channel 301 is communicated with the input end of the straight hot water channel; The preheating structure can have the following solutions:

[0053] See Figure 11-13, the preheating structure includes a preheating cover 3, which is ultrasonically welded to the liquid delivery device 1. The preheating cover 3 is externally disposed on the outer end face of the liquid delivery housing 104 of the liquid delivery device 1. The preheating water channel 301 is located on the preheating cover 3 and is jointly formed by the outer end face of the liquid delivery housing 104 and the preheating cover 3. The preheating cover 3 is provided with a second water inlet 302 that communicates with the input end of the preheating water channel 301, for communicating with an external liquid inlet source and the preheating water channel 301 to enable unheated liquid to enter the preheating water channel 301. The first water inlet 102 is located at the output end of the preheating water channel 301, for communicating the preheating water channel 301 with the direct hot water channel, so as to realize the liquid in the preheating water channel 301 entering the direct hot water channel. The preheating cover 3 is provided with a second joint 303, and the second joint 303 is detachably installed on the second water inlet 302, so as to connect the preheating cover 3 to an external liquid inlet source and convey unheated liquid to the instant water heater;

[0054] See Figure 16-18 , the preheating structure includes a groove portion 109 provided on the liquid delivery device 1 and located outside the heating component 2. The groove portion 109 is located on the outer end face of the liquid delivery housing 104 and is integrally formed with the liquid delivery housing 104 to increase the sealing performance between the preheating structure and the liquid delivery device 1. The first water inlet 102 is provided on the top surface of the groove portion 109, for communicating with an external liquid inlet source and the preheating water channel 301. A partition plate 110 is provided in the liquid delivery chamber 101 so that a preheating water channel 301 is formed between the groove portion 109 and the partition plate 110. The partition plate 110 is detachably installed in the liquid delivery chamber 101 and is hermetically connected to the side wall of the liquid delivery chamber 101. The preheating water channel 301 and the direct hot water channel are respectively located on both sides of the partition plate 110 to separate the preheating water channel 301 from the direct hot water channel. The partition plate 110 is provided with a water passing port 1101, and the water passing port 1101 communicates the preheating water channel 301 with the direct hot water channel, so as to realize the liquid in the preheating water channel 301 entering the direct hot water channel;

[0055] Through the above technical solutions, the flow length of the liquid passing through the preheating component 3 is increased, the preheating time of the liquid in the instant water heater is extended, and the heat exchange effect of the instant water heater on the liquid is further improved, which can be understood by those skilled in the art.

[0056] Second Embodiment:

[0057] Refer to Figure 19-23, This instant - heating heater is different from the first embodiment. In this embodiment, the vertical projection of the heating component 2 is linear. The number of the heating components 2 is preferably five groups, which are arranged at intervals in the left - right direction of the liquid - delivery cavity 101 to form six groups of third straight hot - water channels 1014, and adjacent two groups of the third straight hot - water channels 1014 are all connected. The number of the separating components 106 is preferably four groups, which are respectively arranged in the third straight hot - water channels 1014 between adjacent two groups of heating components 2. Each group of separating components 106 is respectively connected to the rear side wall of the liquid - delivery cavity 101. The six groups of third straight hot - water channels 1014 and the four groups of separating components 106 divide the liquid - delivery cavity 101 into straight hot - water channels that are continuously circuitous in the horizontal direction of the liquid - delivery cavity 101. The first water inlet 102 is located at the head end of the third straight hot - water channel 1014, and the first water outlet 103 is located at the tail end of the third straight hot - water channel 1014, so that the liquid flows through the liquid - delivery cavity 101 in sequence through the first water inlet 102, the third straight hot - water channel 1014, and the first water outlet 103, thereby realizing an extension of the flow length of the liquid in the liquid - delivery cavity 101. Adjacent two groups of the third straight hot - water channels 1014 are respectively located on the left and right sides of the heating end of the heating component 2, so that when the liquid flows through the third straight hot - water channel 1014, it can directly contact the left and right sides of the heating end of the heating component 2. Through the above technical solutions, it is realized that the liquid can achieve complete heat exchange in the liquid - delivery cavity 101, and the heat - exchange efficiency of the instant - heating heat exchanger for the liquid is improved. Those skilled in the art can understand all of these.

[0058] Furthermore, a second liquid - delivery notch 1015 is provided in the liquid - delivery cavity 101. Specifically, in this embodiment, the number of the second liquid - delivery notches 1015 is preferably five groups, which are arranged on the inner top surface of the liquid - delivery cavity 101 and are recessed upward from the inner top surface of the liquid - delivery cavity 101. The second liquid - delivery notch 1015 is located between adjacent two groups of the third straight hot - water channels 1014 and is close to the rear side wall of the liquid - delivery cavity 101. Through the above technical solutions, it is realized to connect adjacent two groups of the third straight hot - water channels 1014. Those skilled in the art can understand all of these.

[0059] Other parts not described are the same as those in the first embodiment and will not be repeated.

[0060] The above is the preferred solution of the present utility model, which shows and describes the basic principle, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above - mentioned embodiments. What is described in the above - mentioned embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of the present utility model claimed is defined by the appended claims and their equivalents.

Claims

1. An instant heater, comprising a liquid delivery device (1) for delivering liquid and a heating component (2) for heating the liquid in the liquid delivery device (1), characterized in that, The liquid delivery device (1) is provided with a liquid delivery cavity (101), a first water inlet (102) and a first water outlet (103) communicating with the liquid delivery cavity (101). The heating component (2) is arranged in the liquid delivery cavity (101) so that the liquid directly contacts the heating component (2), and the heating component (2) forms a guiding structure for guiding the liquid flow. The heating component (2) and the liquid delivery device (1) form a direct hot water channel for liquid flow in the liquid delivery cavity (101). The first water inlet (102) is located at the head end of the direct hot water channel, and the first water outlet (103) is located at the tail end of the direct hot water channel.

2. The instant water heater according to claim 1, wherein The liquid delivery device (1) includes a liquid delivery housing (104), a liquid delivery cover plate (105), and a partition component (106). The liquid delivery housing (104) is provided with a housing opening (1041) communicating with the liquid delivery cavity (101). The liquid delivery cover plate (105) covers the housing opening (1041) and jointly forms the liquid delivery cavity (101) with the liquid delivery housing (104). The partition component (106) is provided in several groups in the liquid delivery cavity (101) and is arranged at intervals along the guiding direction of the heating component (2). The several groups of partition components (106) and the heating component (2) form a direct hot water channel that continuously winds horizontally in the liquid delivery cavity (101). The first water inlet (102) is arranged on the liquid delivery housing (104), and the first water outlet (103) is arranged on the liquid delivery cover plate (105).

3. The instant water heater according to claim 2, characterized in that, The heating component (2) is a set and extends along the front-rear direction of the liquid delivery cavity (101) and is arranged along the left-right direction of the liquid delivery cavity (101). The several groups of partition components (106) and the heating component (2) form a first direct hot water channel (1011) and a second direct hot water channel (1012) that are connected end to end in the liquid delivery cavity (101). The first water inlet (102) is located at the head end of the first direct hot water channel (1011), and the first water outlet (103) is located at the tail end of the second direct hot water channel (1012).

4. The instant water heater according to claim 3, wherein The heating component (2) is continuously and circuitously arranged along the front-rear direction of the liquid delivery cavity (101). The several groups of partition components (106) are arranged at intervals along the guiding direction of the heating component (2). The vertical projection of the partition component (106) is linear. The first direct hot water channel (1011) is continuously and circuitously arranged along the front-rear direction of the liquid delivery cavity (101) and is located behind the heating component (2). The second direct hot water channel (1012) is continuously and circuitously arranged along the front-rear direction of the liquid delivery cavity (101) and is located in front of the heating component (2).

5. The instant water heater according to claim 3, wherein The vertical projection of the heating component (2) is in an 'n' shape. The partition component (106) is a set and is located inside the heating component (2). The vertical projection of the partition component (106) is in an 'n' shape. The vertical projection of the first direct hot water channel (1011) is in an 'n' shape and is located behind the heating component (2). The vertical projection of the second direct hot water channel (1012) is in an 'n' shape and is located in front of the heating component (2).

6. The instant water heater according to claim 3, characterized in that A first liquid delivery notch (1013) for connecting the first direct hot water channel (1011) and the second direct hot water channel (1012) is provided in the liquid delivery cavity (101). The first liquid delivery notch (1013) is arranged on the inner top surface of the liquid delivery cavity (101) and is located between the end of the first direct hot water channel (1011) and the start of the second direct hot water channel (1012).

7. The instant water heater according to claim 2, wherein, The number of the heating components (2) is at least two groups and they are arranged at intervals in the left - right direction of the liquid delivery cavity (101). The vertical projection of the heating components (2) is linear so that the liquid delivery cavity (101) forms at least three groups of third direct hot water channels (1014). The third direct hot water channels (1014) extend in the front - back direction of the liquid delivery cavity (101). A plurality of partition components (106) are respectively arranged in the third direct hot water channels (1014) between two adjacent groups of heating components (2). The third direct hot water channels (1014) and the partition components (106) make the liquid delivery cavity (101) form a direct hot water channel that is continuously circuitous in the horizontal direction. The first water inlet (102) is located at the start of the first - stage third direct hot water channel (1014), and the first water outlet (103) is located at the end of the last - stage third direct hot water channel (1014).

8. The instant water heater according to claim 5, wherein, A second liquid delivery notch (1015) for connecting two adjacent groups of third direct hot water channels (1014) is provided in the liquid delivery cavity (101). The second liquid delivery notches (1015) are five groups and are arranged on the inner top surface of the liquid delivery cavity (101) and are located between two adjacent groups of third direct hot water channels (1014).

9. The instant water heater according to claim 2, characterized in that, The liquid delivery device (1) further includes a sealing component (107) for sealing the liquid delivery cavity (101). The sealing component (107) is arranged between the liquid delivery housing (104) and the liquid delivery cover plate (105), and the sealing component (107) is made of rubber material or silica gel material.

10. The instant water heater according to claim 1, characterized in that, The liquid delivery device (1) is provided with a pre - heating structure having a pre - hot water channel (301). The pre - hot water channel (301) is correspondingly arranged with the heating component (2). The pre - hot water channel (301) at least partially extends along the trajectory of the heating component (2), and the output end of the pre - hot water channel (301) is communicated with the input end of the direct hot water channel; The pre - heating structure includes a pre - heating covering member (3). The pre - heating covering member (3) is arranged on the liquid delivery device (1). The pre - heating covering member (3) is externally disposed on the outer end surface of the liquid delivery device (1). The pre - hot water channel (301) is located on the pre - heating covering member (3). The pre - heating covering member (3) is provided with a second water inlet (302) which is communicated with the input end of the pre - hot water channel (301); Alternatively, the pre - heating structure includes a groove portion (109) arranged on the liquid delivery device (1) and located outside the heating component (2). A partition plate (110) is arranged in the liquid delivery cavity (101) so that a pre - hot water channel (301) is formed between the groove portion (109) and the partition plate (110). The pre - hot water channel (301) and the direct hot water channel are respectively located on both sides of the partition plate (110). A water - passing port (1101) for communicating the pre - hot water channel (301) and the direct hot water channel is arranged on the partition plate (110).

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