Tube bank type heat exchanger

Abstract

The utility model discloses a calandria type heat exchanger which comprises an upper shell, a lower shell and a hot water runner pipe, the hot water runner pipe is bent for multiple times, the upper shell comprises a hot water inlet connector and a hot water outlet connector, and the hot water inlet connector and the hot water outlet connector are communicated with the two ends of the hot water runner pipe. The lower shell and the upper shell are provided with a cold water inlet connector and a cold water outlet connector respectively, the cold water inlet connector and the cold water outlet connector are communicated with a cavity between the upper shell and the lower shell respectively, the upper shell comprises a plurality of upper protruding parts, and a straight pipe part, close to one side of the upper shell, of the hot water flow channel pipe is located in the upper protruding parts. The upper shell comprises a plurality of upper protruding parts, first gaps are formed between the inner walls of the upper protruding parts and the straight pipe parts of the hot water flow channel pipes, the lower shell comprises a plurality of lower protruding parts, the straight pipe parts, close to the side of the lower shell, of the hot water flow channel pipes are located in the lower protruding parts, and second gaps are formed between the inner walls of the lower protruding parts and the straight pipe parts of the hot water flow channel pipes. The sealing device is compact in structure, good in sealing effect, small in size and capable of avoiding generation of vortexes and bubbles.

Description

TECHNICAL FIELD

[0001] The utility model relates to a water dispenser, especially to a row pipe type heat exchanger. BACKGROUND

[0002] In order to quickly cool down the hot water to form warm water, the water dispenser is generally provided with a row pipe type heat exchanger. The existing row pipe type heat exchanger is provided with a plurality of straightly extending hot water pipes in its cavity. The two ends of the hot water pipes are connected to the hot water pipe seat for water guiding. Cold water is injected into the cavity of the shell. The heat exchange between the cold water in the cavity and the hot water in the hot water pipes is achieved. Such heat exchanger has the following defects: first, a plurality of hot water pipes and hot water pipe seats are needed for matching. The number of parts is large. After assembly, water leakage, water leakage and other situations are prone to occur. The sealing performance is not good. Moreover, the heat exchanger has a large volume, which is not conducive to the miniaturization development of the water dispenser. Furthermore, the water between the adjacent hot water pipes flows in a right angle channel. The turning position is easy to cause vortex and air bubbles in the pipe, which further affects the water outlet effect of the water dispenser. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a row pipe type heat exchanger with compact structure, good sealing effect, small size, and vortex and air bubbles can be avoided.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme.

[0005] A row pipe type heat exchanger comprises an upper shell, a lower shell and a hot water flow channel pipe. The upper shell and the lower shell are vertically spliced and fixedly connected. The hot water flow channel pipe is bent multiple times. The hot water flow channel pipe is fixedly arranged in the cavity formed by the upper shell and the lower shell. The upper shell comprises a hot water inlet connector and a hot water outlet connector. The hot water inlet connector and the hot water outlet connector are connected to the two ends of the hot water flow channel pipe. The lower shell and the upper shell are respectively provided with a cold water inlet connector and a cold water outlet connector. The cold water inlet connector and the cold water outlet connector are respectively connected to the cavity between the upper shell and the lower shell. The upper shell comprises a plurality of upper protrusions. The straight pipe part of the hot water flow channel pipe close to the side of the upper shell is located in the upper protrusion. The inner wall of the upper protrusion and the straight pipe part of the hot water flow channel pipe have a first gap. The lower shell comprises a plurality of lower protrusions. The straight pipe part of the hot water flow channel pipe close to the side of the lower shell is located in the lower protrusion. The inner wall of the lower protrusion and the straight pipe part of the hot water flow channel pipe have a second gap.

[0006] Preferably, the first partition part is arranged in alignment with the second partition part and is tightly connected with the second partition part.

[0007] Preferably, a clamping groove is arranged on the first partition, and a convex rib is arranged on the second partition, the convex rib is inserted into the clamping groove and the two are tightly matched.

[0008] Preferably, the cross section of the convex rib and the clamping groove is trapezoidal.

[0009] Preferably, a sealing ring is arranged between the edge of the upper shell and the edge of the lower shell.

[0010] Preferably, the upper shell and the lower shell are fixedly connected by a plurality of screws.

[0011] Preferably, a circular-arc elbow is arranged between two adjacent straight pipes.

[0012] Preferably, a first circular-arc transition is arranged between two adjacent upper protrusions.

[0013] Preferably, a second circular-arc transition is arranged between two adjacent lower protrusions.

[0014] In the heat exchanger of the utility model, the upper shell and the lower shell are fixedly combined, the hot water flow pipe is arranged in the cavity between the upper shell and the lower shell, the hot water flow pipe is of an integrated structure and is bent for multiple times, and the two ends of the hot water flow pipe are respectively connected to the hot water inlet joint and the hot water outlet joint. Compared with the structure of multiple dispersed straight pipes in the prior art, the structure of the utility model is more compact and has better sealing performance. Meanwhile, a plurality of upper protrusions and a plurality of lower protrusions are arranged on the upper shell and the lower shell respectively, the upper protrusions and the lower protrusions correspond to the straight pipes of the hot water flow pipe, when cold water is connected between the cold water inlet joint and the cold water outlet joint, the cold water between the upper protrusions and the lower protrusions exchanges heat with the hot water in the hot water flow pipe, the heat exchange efficiency is higher, the volume is smaller, and the application requirement is better met. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a perspective view of the heat exchanger of the utility model;

[0016] Figure 2 It is an exploded view of the heat exchanger of the utility model;

[0017] Figure 3 It is a front view of the heat exchanger of the utility model;

[0018] Figure 4 It is Figure 3 It is a sectional view along line A-A. DETAILED DESCRIPTION

[0019] The utility model will be described in more detail in combination with the drawings and examples.

[0020] The utility model discloses a calandria heat exchanger, combine Figures 1 to 4 As shown in the figure, it comprises an upper shell 1, a lower shell 2 and a hot water flow channel pipe 3, the upper shell 1 and the lower shell 2 are fixedly connected by being spliced upside down, the hot water flow channel pipe 3 is bent multiple times, and the hot water flow channel pipe 3 is fixedly arranged in the cavity formed by the upper shell 1 and the lower shell 2, the upper shell 1 comprises a hot water inlet joint 10 and a hot water outlet joint 11, the hot water inlet joint 10 and the hot water outlet joint 11 are communicated with the two ends of the hot water flow channel pipe 3, the lower shell 2 and the upper shell 1 are respectively provided with a cold water inlet joint 12 and a cold water outlet joint 13, the cold water inlet joint 12 and the cold water outlet joint 13 are respectively communicated with the cavity between the upper shell 1 and the lower shell 2, the upper shell 1 comprises a plurality of upper bulges 14, the straight pipe part 30 of the hot water flow channel pipe 3 close to one side of the upper shell 1 is located in the upper bulge 14, and a first gap 31 is formed between the inner wall of the upper bulge 14 and the straight pipe part 30 of the hot water flow channel pipe 3, the lower shell 2 comprises a plurality of lower bulges 15, the straight pipe part 30 of the hot water flow channel pipe 3 close to one side of the lower shell 2 is located in the lower bulge 15, and a second gap 32 is formed between the inner wall of the lower bulge 15 and the straight pipe part 30 of the hot water flow channel pipe 3.

[0021] In the above structure, the upper shell 1 and the lower shell 2 are fixedly connected by being spliced upside down, the hot water flow channel pipe 3 is arranged in the cavity between the upper shell 1 and the lower shell 2, the hot water flow channel pipe 3 is of an integrated structure and is bent multiple times, and the two ends of the hot water flow channel pipe 3 are respectively communicated with the hot water inlet joint 10 and the hot water outlet joint 11, compared with the structure of adopting multiple dispersed straight pipes in the prior art, the structure of the utility model is more compact, and the sealing performance is also better, meanwhile, a plurality of upper bulges 14 and a plurality of lower bulges 15 are respectively arranged on the upper shell 1 and the lower shell 2, the upper bulges 14 and the lower bulges 15 correspond to the straight pipe part 30 of the hot water flow channel pipe 3, when cold water is connected between the cold water inlet joint 12 and the cold water outlet joint 13, the cold water between the upper bulges 14 and the lower bulges 15 exchanges heat with the hot water in the hot water flow channel pipe 3, not only the heat exchange efficiency is higher, but also the volume is more compact, and the application requirement is better met.

[0022] In order to form a closed cold water passage between the upper bulges 14 and the lower bulges 15, in the embodiment, please refer to Figure 4 There is a first partition 140 between two adjacent upper bulges 14, there is a second partition 150 between two adjacent lower bulges 15, the first partition 140 is arranged in alignment with the second partition 150 and is tightly connected with the second partition 150.

[0023] As a preferred mode, the first partition 140 is provided with a clamping groove 141, the second partition 150 is provided with a convex rib 151, the convex rib 151 is inserted into the clamping groove 141 and the two are tightly matched. Further, the cross section of the convex rib 151 and the clamping groove 141 is trapezoidal.

[0024] In the above structure, the convex rib 151 and the clamping groove 141 based on the trapezoidal shape are matched, which can make the connection between the first partition 140 and the second partition 150 tightly matched, and further make the cold water passage between the upper shell 1 and the lower shell 2 have the same shape as the hot water channel pipe 3, which not only ensures the sufficient contact between the cold water and the hot water channel pipe 3, but also makes the overall structure of the heat exchanger thinner, thereby meeting the miniaturization design requirement.

[0025] In order to meet the sealing requirement between the upper and lower shells, please refer to Figure 2 , the edge of the upper shell 1 and the edge of the lower shell 2 are clamped with a sealing ring 4.

[0026] Regarding the preferred fixed relationship between the upper and lower shells, in the embodiment, the upper shell 1 and the lower shell 2 are fixedly connected through a plurality of screws 5.

[0027] In order to further improve the sealing effect, the embodiment is provided with a sealing ring or a sealing gasket at the position where the screw 5 passes through and the position where the two ends of the hot water channel pipe 3 are connected with the hot water inlet joint 10 and the hot water outlet joint 11.

[0028] As a preferred mode, the adjacent two straight pipe portions 30 have a circular-arc-shaped elbow pipe portion 33. Correspondingly, the adjacent two upper protruding portions 14 form a first circular-arc-shaped transition portion 142, and the adjacent two lower protruding portions 15 form a second circular-arc-shaped transition portion 152.

[0029] In the above structure, by providing the circular-arc-shaped elbow pipe portion 33, the first circular-arc-shaped transition portion 142 and the second circular-arc-shaped transition portion 152, the turning position of the hot water channel can be arc-shaped buffer transition, which can avoid the large impact on the water flow at the turning position, thereby avoiding the vortex and air bubbles at the turning position.

[0030] The above is only the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement or improvement within the technical scope of the present application shall be included in the scope of the present application.

Claims

1. A calandria heat exchanger characterized by, The utility model provides a hot and cold water mixing device, which comprises an upper shell (1), a lower shell (2) and a hot water flow channel pipe (3), the upper shell (1) and the lower shell (2) are spliced and fixedly connected in a top-down manner, the hot water flow channel pipe (3) is bent multiple times, and the hot water flow channel pipe (3) is fixedly arranged in a cavity formed by the upper shell (1) and the lower shell (2), the upper shell (1) comprises a hot water inlet joint (10) and a hot water outlet joint (11), the hot water inlet joint (10) and the hot water outlet joint (11) are communicated with two ends of the hot water flow channel pipe (3), the lower shell (2) and the upper shell (1) are respectively provided with a cold water inlet joint (12) and a cold water outlet joint (13), the cold water inlet joint (12) and the cold water outlet joint (13) are respectively communicated with the cavity between the upper shell (1) and the lower shell (2), the upper shell (1) comprises a plurality of upper protruding portions (14), a straight pipe portion (30) of the hot water flow channel pipe (3) close to one side of the upper shell (1) is located in the upper protruding portion (14), and a first gap (31) is formed between the inner wall of the upper protruding portion (14) and the straight pipe portion (30) of the hot water flow channel pipe (3), the lower shell (2) comprises a plurality of lower protruding portions (15), a straight pipe portion (30) of the hot water flow channel pipe (3) close to one side of the lower shell (2) is located in the lower protruding portion (15), and a second gap (32) is formed between the inner wall of the lower protruding portion (15) and the straight pipe portion (30) of the hot water flow channel pipe (3).

2. The calandria heat exchanger of claim 1, wherein, First partition portions (140) are arranged between adjacent two upper protruding portions (14), second partition portions (150) are arranged between adjacent two lower protruding portions (15), the first partition portions (140) are arranged in alignment with the second partition portions (150) and are tightly connected with the second partition portions (150).

3. The calandria heat exchanger of claim 2, wherein, The first partition portions (140) are provided with clamping grooves (141), the second partition portions (150) are provided with convex edges (151), the convex edges (151) are inserted into the clamping grooves (141) and are tightly matched with the clamping grooves (141).

4. The calandria heat exchanger of claim 3, wherein, The convex edges (151) and the clamping grooves (141) are all in the shape of trapezoid in cross section.

5. The calandria heat exchanger of claim 1 wherein, Sealing rings (4) are arranged between the edges of the upper shell (1) and the edges of the lower shell (2).

6. The calandria heat exchanger of claim 1 wherein, The upper shell (1) and the lower shell (2) are fixedly connected by a plurality of screws (5).

7. The calandria heat exchanger of claim 1 wherein, Arc-shaped elbow portions (33) are arranged between adjacent two straight pipe portions (30).

8. The calandria heat exchanger of claim 1 wherein, First arc-shaped transition portions (142) are formed between adjacent two upper protruding portions (14).

9. The calandria heat exchanger of claim 1 wherein, Second arc-shaped transition portions (152) are formed between adjacent two lower protruding portions (15).

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