Tank tubular heat exchanger and refrigeration equipment

Abstract

The utility model belongs to the technical field of refrigeration equipment, and particularly discloses a tank pipe type heat exchanger and refrigeration equipment. The tank pipe type heat exchanger comprises an inner tank body, an outer tank body, a heat exchange pipe, an air return liquid inlet pipe and an air return liquid outlet pipe. The tank pipe type heat exchanger is compact in structure, small in size, small in installation size and low in manufacturing cost, and when the tank pipe type heat exchanger is applied to refrigeration equipment, the refrigeration equipment can be small refrigeration equipment such as a household refrigerator; the heat exchange pipe exchanges heat with the refrigerant in the inner tank body, the heat exchange efficiency is high, liquid storage and gas-liquid separation are achieved in the inner tank body part, the functional fault that the refrigeration effect is poor due to the fact that the refrigerant of a refrigeration system is insufficient due to the fact that the refrigeration equipment changes along with the environment temperature is effectively solved, and meanwhile the whole machine energy consumption of the refrigeration equipment can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration equipment and relates to a tank-tube heat exchanger and refrigeration equipment. Background Art

[0002] There are two main types of heat exchangers used in refrigeration equipment: plate heat exchangers and tube heat exchangers. Plate heat exchangers are mainly composed of stacked metal plates with a certain corrugated shape. Thin rectangular channels are formed between the plates, and heat exchange is carried out through the plates; tube heat exchangers are mainly composed of shells, tube bundles, tube sheets, pipes and other components. In tube heat exchangers, two fluids flow in the shell side and tube side respectively, and heat is exchanged through the tube wall. Plate heat exchangers and tube heat exchangers are large in size, large in installation size, and high in cost. They are often used in large and medium-sized refrigeration equipment, and are not suitable for small refrigeration equipment such as household refrigerators with small compressor compartment sizes. In addition, current household refrigerators mainly exchange heat through soldering of return air pipes and capillary tubes. The main disadvantage is that the refrigeration effect of the refrigerator is greatly affected by the ambient temperature. For example, when the ambient temperature is lower than a certain critical temperature, the refrigerant in the capillary tube will flash prematurely, the capillary tube will frost, the suction pressure will be too low, and the refrigerant in the evaporator pipeline will decrease, resulting in poor refrigeration effect of the refrigerator. Utility Model Content

[0003] The utility model aims to provide a tank-and-tube heat exchanger and a refrigeration device. The heat exchanger is suitable for small refrigeration equipment, has high heat exchange efficiency, and effectively solves the functional failure of the refrigeration equipment caused by insufficient refrigerant in the refrigeration system and poor refrigeration effect due to changes in ambient temperature.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A tank-and-tube heat exchanger comprises an inner tank body, an outer tank body, a heat exchange tube, a return air inlet pipe and a return air outlet pipe;

[0006] The inner tank body is located inside the outer tank body;

[0007] The heat exchange tube is wound around the outer wall of the inner tank body, and both ends of the heat exchange tube are led out from the outer tank body;

[0008] One end of the return air inlet pipe is located inside the inner tank body, and the other end of the return air inlet pipe is led out from the inner tank body and the outer tank body in sequence;

[0009] One end of the return air and liquid outlet pipe is located inside the inner tank body, and the other end of the return air and liquid outlet pipe is led out from the inner tank body and the outer tank body in sequence.

[0010] Preferably, a filler is provided between the inner tank body and the outer tank body.

[0011] Preferably, the filler is configured as a foaming agent.

[0012] Preferably, an opening is provided at the upper end of the outer tank body, and the opening is equipped with a plug.

[0013] Preferably, one end of the return air liquid inlet pipe is staggered with one end of the return air liquid outlet pipe.

[0014] Preferably, a spacer is provided in the space between one end of the return air liquid inlet pipe and one end of the return air liquid outlet pipe.

[0015] Preferably, the heat exchange tubes are arranged in a spiral shape on the outer wall of the inner tank body.

[0016] Preferably, the inner tank body and the outer tank body are connected via a plurality of pillars.

[0017] Preferably, a mounting part is provided at the lower end of the outer tank body.

[0018] A refrigeration device is provided with the above-mentioned tank-and-tube heat exchanger.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] As described above, the utility model relates to a tank-and-tube heat exchanger with a compact structure, small size, small installation dimensions, and low manufacturing cost. It is applied to refrigeration equipment, and the refrigeration equipment can be a small refrigeration equipment such as a household refrigerator. The heat exchange tube exchanges heat with the refrigerant in the inner tank body, and the heat exchange efficiency is high. Liquid storage and gas-liquid separation are realized in the inner tank body part, which effectively solves the functional failure of the refrigeration equipment caused by insufficient refrigerant in the refrigeration system due to changes in ambient temperature, resulting in poor refrigeration effect. At the same time, it can effectively reduce the overall energy consumption of the refrigeration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0022] Figure 1 This is a front view of the tank-and-tube heat exchanger of an embodiment of the utility model;

[0023] Figure 2 It is a side view of the tank and tube heat exchanger of the embodiment of the utility model;

[0024] Figure 3 This is a top view of the tank-and-tube heat exchanger of an embodiment of the utility model;

[0025] Figure 4 This is a bottom view of the tank-and-tube heat exchanger of an embodiment of the utility model;

[0026] Figure 5 This is a three-dimensional cross-sectional view of a tank-and-tube heat exchanger according to an embodiment of the utility model;

[0027] Figure 6 This is a plan cross-sectional view of a tank-and-tube heat exchanger according to an embodiment of the utility model;

[0028] Figure 7 It is an exploded view of the assembly of the tank and tube heat exchanger of the embodiment of the utility model;

[0029] Figure 8 It is an assembly diagram of the return air inlet pipe, return air outlet pipe and the top cover of the inner tank body in the tank-tube heat exchanger of the utility model embodiment;

[0030] Fig. 9 This is an assembly diagram of the return air inlet pipe, return air outlet pipe and inner tank body in the tank-tube heat exchanger of the utility model embodiment;

[0031] Fig.10 It is an assembly diagram of the return air inlet pipe, return air outlet pipe, inner tank body and heat exchange tube in the tank-tube heat exchanger of the embodiment of the utility model;

[0032] Fig.11 It is an assembly diagram of the lower bottom cover and assembly parts of the outer tank body of the tank-and-tube heat exchanger of the embodiment of the utility model;

[0033] Fig.12 It is a perspective view of a tank and tube heat exchanger according to an embodiment of the utility model. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0035] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0036] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0040] Example:

[0041] like Figures 1 to 12 As shown, the tank-and-tube heat exchanger of this embodiment includes an inner tank body, an outer tank body, a heat exchange tube 3 , a return air inlet pipe 41 and a return air outlet pipe 42 .

[0042] The inner tank body is located inside the outer tank body. The inner tank body includes an inner tank body 11, an inner tank top cover 12 and an inner tank bottom cover 13. The inner tank body 11 is a tensile component, and the inner tank top cover 12 and the inner tank bottom cover 13 are cast components. The materials of the three are iron. The upper end of the inner tank body 11 is welded to the inner tank top cover 12 by argon arc welding, and the lower end of the inner tank body 11 is welded to the inner tank bottom cover 13 by argon arc welding, so that a closed space is formed inside the inner tank body. The outer tank body includes an outer tank body 21, an outer tank top cover 22 and an outer tank bottom cover 23. The outer tank body 21 is a tensile component, and the outer tank top cover 22 and the outer tank bottom cover 23 are cast components. The materials of the three are iron. The upper end of the outer tank body 21 is welded to the outer tank top cover 22 by argon arc welding, and the lower end of the outer tank body 21 is welded to the outer tank bottom cover 23 by argon arc welding, so that a closed space is formed inside the outer tank body.

[0043] The inner tank lower bottom cover 13 of the inner tank body and the outer tank lower bottom cover 23 of the outer tank body are connected via three pillars 6 to realize the installation positioning and support of the inner tank body. Specifically, a slot 231 is provided on the upper end surface of the outer tank lower bottom cover 23, and a rubber pad 232 is placed in the slot 231. The upper end of the pillar 6 is fixedly connected to the lower end surface of the inner tank lower bottom cover 13, and the lower end of the pillar 6 abuts against the rubber pad 232.

[0044] The heat exchange tube 3 is made of copper, and is wound around the outer wall of the inner tank body. The heat exchange tube 3 is fully welded to the outer wall of the inner tank body by tin soldering, and both ends of the heat exchange tube 3 are led out of the outer tank body. The contact part between the heat exchange tube 3 and the outer tank body is welded by silver soldering. The heat exchange tube 3 is arranged in a spiral shape on the outer wall of the inner tank body to increase the contact area between the heat exchange tube 3 and the outer wall of the inner tank body, and further improve the heat exchange efficiency.

[0045] The return air inlet pipe 41 is made of copper, one end of which is located inside the inner tank body, and the other end of which is led out from the inner tank body and the outer tank body in sequence; the return air outlet pipe 42 is made of copper, one end of which is located inside the inner tank body, and the other end of which is led out from the inner tank body and the outer tank body in sequence. The contact parts of the return air inlet pipe 41 and the inner tank body and the outer tank body are welded by fiber silver welding, and the contact parts of the return air outlet pipe 42 and the inner tank body and the outer tank body are welded by fiber silver welding.

[0046] A filler 5 is arranged between the inner tank body and the outer tank body, and the filler 5 is specifically arranged as a cyclopentane foaming agent. The filler 5 realizes auxiliary support for the inner tank body, and realizes heat preservation of the inner tank body, and reduces heat exchange between the inner tank body and the outside.

[0047] The outer tank upper cover 22 at the upper end of the outer tank body is provided with an opening, and the opening is equipped with a rubber plug 24. When the heat exchanger is assembled, the filler 5 is filled between the inner tank body and the outer tank body through the opening, and after the filling of the filler 5 is completed, the opening is equipped with the plug 24 to close it.

[0048] One end of the return gas inlet pipe 41 and one end of the return gas outlet pipe 42 are arranged in a staggered manner, so that most of the low-temperature liquid refrigerant first enters the inner tank through the return gas inlet pipe 41, and avoids being directly discharged through the return gas outlet pipe 42. More preferably, a spacer is provided in the space between one end of the return gas inlet pipe 41 and one end of the return gas outlet pipe 42 to prevent the low-temperature liquid refrigerant flowing out of the return gas inlet pipe 41 from being directly discharged through the return gas outlet pipe 42.

[0049] The outer tank lower bottom cover 23 at the lower end of the outer tank body is provided with an assembly part 7, wherein the assembly part 7 is provided as a bolt, and the upper end of the bolt is connected to the outer tank lower bottom cover 23 by a stamping process. The heat exchanger is installed on the refrigeration equipment through the assembly part 7.

[0050] A refrigeration device, preferably a refrigerator, is provided with the tank-and-tube heat exchanger of the embodiment.

[0051] One end of the heat exchange tube 3 is connected to the exhaust pipe of the compressor, the other end of the heat exchange tube 3 is connected to the condensation inlet pipe, the other end of the return gas inlet pipe 41 is connected to the evaporator outlet, and the other end of the return gas outlet pipe 42 is connected to the compressor return gas pipe. During use, the low-temperature liquid refrigerant that has not been completely evaporated in the evaporator is stored in the inner tank body to achieve liquid storage and gas-liquid separation functions. At this time, the temperature in the inner tank body is relatively low, the heat exchange tube 3 is connected to the exhaust pipe of the refrigeration system, and the temperature inside the tube is relatively high. The heat exchange tube 3 exchanges heat with the inner tank body to improve the heat exchange efficiency, thereby improving the refrigeration performance of the refrigerator.

[0052] So far, the present embodiment has been described in detail in conjunction with the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of the tank-and-tube heat exchanger of the utility model. The tank-and-tube heat exchanger of the utility model has a compact structure, a small volume, a small installation size, and a low cost. It is applied to refrigeration equipment, and the refrigeration equipment can be a small refrigeration equipment such as a household refrigerator; the heat exchange tube 3 exchanges heat with the refrigerant in the inner tank body, and the heat exchange efficiency is high. Liquid storage and gas-liquid separation are realized in the inner tank body part, which effectively solves the functional failure of the refrigeration equipment due to changes in ambient temperature, resulting in insufficient refrigerant in the refrigeration system and poor refrigeration effect. At the same time, it can effectively reduce the overall energy consumption of the refrigeration equipment.

[0053] Of course, the above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept of the utility model, or direct / indirect application in other related technical fields are included in the patent protection scope of the utility model and should be protected by the utility model.

Claims

1. A tank and tube heat exchanger, characterized in that: It includes an inner tank body, an outer tank body, a heat exchange pipe, a return air inlet pipe and a return air outlet pipe; The inner tank body is located inside the outer tank body; The heat exchange tube is wound around the outer wall of the inner tank body, and both ends of the heat exchange tube are led out from the outer tank body; One end of the return air inlet pipe is located inside the inner tank body, and the other end of the return air inlet pipe is led out from the inner tank body and the outer tank body in sequence; One end of the return air and liquid outlet pipe is located inside the inner tank body, and the other end of the return air and liquid outlet pipe is led out from the inner tank body and the outer tank body in sequence.

2. The tank and tube heat exchanger according to claim 1, characterized in that: A filler is arranged between the inner tank body and the outer tank body.

3. The tank and tube heat exchanger according to claim 2, characterized in that: The filler is configured as a foaming agent.

4. The tank and tube heat exchanger according to claim 2 or 3, characterized in that: An opening is arranged at the upper end of the outer tank body, and a plug is installed at the opening.

5. The tank and tube heat exchanger according to claim 1, characterized in that: One end of the return air liquid inlet pipe is staggered with one end of the return air liquid outlet pipe.

6. The tank and tube heat exchanger according to claim 1, characterized in that: A spacer is provided in the space between one end of the return air liquid inlet pipe and one end of the return air liquid outlet pipe.

7. The tank and tube heat exchanger according to claim 1, characterized in that: The heat exchange tubes are arranged in a spiral shape on the outer wall of the inner tank body.

8. The tank and tube heat exchanger according to claim 1, characterized in that: The inner tank body and the outer tank body are connected via a plurality of pillars.

9. The tank and tube heat exchanger according to claim 1, characterized in that: The lower end of the outer tank body is provided with an assembly part.

10. A refrigeration device, characterized in that: The refrigeration equipment is provided with the tank and tube heat exchanger according to any one of claims 1 to 9.

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