Anti-icing evaporator for refrigeration house
By spraying low-freezing-point antifreeze into the evaporator of the cold storage, the problem of icing and frosting on the heat exchange tubes was solved, improving refrigeration efficiency and reducing energy waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN CITY NANHAI DISTRICT TIANSHIDA REFRIGERATION EQUIP CO LTD
- Filing Date
- 2025-04-17
- Publication Date
- 2026-04-21
AI Technical Summary
Existing evaporators are prone to frost and ice buildup when used in cold storage, which affects refrigeration efficiency and increases energy consumption.
Design a cold storage anti-icing evaporator. By spraying antifreeze onto the heat exchange tubes of the circulation device using a spraying device, the low-freezing-point antifreeze carries away the condensate to prevent ice or frost from forming on the surface of the heat exchange tubes.
It effectively prevents ice or frost from forming on the outside of the heat exchange tubes, improves refrigeration efficiency, and avoids energy waste.
Smart Images
Figure CN224151200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold storage refrigeration equipment technology, and in particular to a cold storage anti-icing evaporator. Background Technology
[0002] The evaporator is a crucial component in refrigeration equipment such as refrigerators and air conditioners. In refrigerators and air conditioners, the evaporator is relatively small, and its internal heat exchange fins are generally densely packed to improve heat exchange efficiency. However, when this type of evaporator is used in cold storage, the low temperatures often cause frost and ice buildup after a period of use, affecting refrigeration efficiency, increasing energy consumption, and resulting in waste. Utility Model Content
[0003] The purpose of this utility model is to provide a cold storage anti-icing evaporator to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.
[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows:
[0005] A cold storage anti-icing evaporator, characterized in that it includes: an evaporation chamber and a circulation device;
[0006] The evaporator has a hollow heat exchange chamber. The front and rear sides of the evaporator are respectively provided with an air outlet and an air inlet that connect to the heat exchange chamber. The circulation device is located inside the heat exchange chamber and includes multiple heat exchange tubes. A spray device for spraying antifreeze is provided above the circulation device. A recovery port is provided at the lower end of the evaporator. The recovery port and the spray device are connected to the spray device through a circulation pump.
[0007] The cold storage anti-icing evaporator provided by this utility model has at least the following beneficial effects: Air enters the heat exchange chamber of the evaporator through the air inlet and is sent out through the air outlet. The air absorbs heat and cools down within the heat exchange chamber through the heat exchange tubes of the circulation device to achieve cold storage refrigeration. The spray device sprays antifreeze onto the circulation device below. The antifreeze can be recovered and reused through the recovery port, solving the problem of ice and frost forming on the outside of the heat exchange tubes, which affects refrigeration efficiency and avoids energy waste. The cold storage anti-icing evaporator provided by this utility model sprays antifreeze onto the heat exchange tubes of the circulation device through the spray device. The low-freezing-point antifreeze carries away condensate, preventing ice or frost from forming on the surface of the heat exchange tubes.
[0008] As a further improvement to the above technical solution, the air outlet is in the shape of a flared mouth that is narrow at the front and wide at the back, and the air outlet is equipped with an air outlet fan.
[0009] As a further improvement to the above technical solution, the evaporator box is in the shape of a cuboid, and the air outlet protrudes forward and outward from the front end face of the evaporator box.
[0010] As a further improvement to the above technical solution, the lower end face of the evaporator is funnel-shaped, and the recovery port is located at the lowest point of the lower end face of the evaporator.
[0011] As a further improvement to the above technical solution, a connecting frame is provided at the upper end of the evaporation box, and the connecting frame is fixedly arranged in pairs on the left and right sides at the upper end of the evaporation box.
[0012] As a further improvement to the above technical solution, the air inlet is detachably equipped with a water-absorbing filter screen, which is made of water-absorbing material.
[0013] As a further improvement to the above technical solution, the water-absorbing filter is plate-shaped, and the water-absorbing filter includes an outer box with a porous hollow structure and a water-absorbing filter element disposed in the outer box.
[0014] As a further improvement to the above technical solution, a pair of slots are provided on both sides of the air inlet, and the two ends of the water-absorbing filter screen are respectively inserted into the two slots.
[0015] As a further improvement to the above technical solution, multiple heat exchange tubes are arranged vertically, and the heat exchange tubes extend in a serpentine bend.
[0016] As a further improvement to the above technical solution, the left or right side of the evaporator box is provided with a refrigerant inlet pipe and a refrigerant outlet pipe that are connected to the heat exchange tube. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0018] Figure 1 This is a top view of one embodiment of the anti-icing evaporator for cold storage provided by this utility model;
[0019] Figure 2 This is a front view of an embodiment of the cold storage anti-icing evaporator provided by this utility model;
[0020] Figure 3 This is a side sectional view of one embodiment of the cold storage anti-icing evaporator provided by this utility model.
[0021] In the diagram: 100-Evaporator box, 110-Heat exchange chamber, 120-Air outlet, 130-Air inlet, 140-Recovery port, 150-Connecting frame, 160-Water absorption filter, 200-Circulation device, 210-Heat exchange tube, 220-Refrigerant inlet pipe, 221-Distribution component, 230-Refrigerant outlet pipe, 300-Spray device, 310-Liquid inlet pipe. Detailed Implementation
[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.
[0023] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, if there are words such as "several", they mean one or more, "multiple" means two or more, "greater than", "less than", "exceeding" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.
[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0026] Reference Figures 1 to 3 The following are embodiments of the cold storage anti-icing evaporator of this utility model:
[0027] A cold storage anti-icing evaporator includes: an evaporator housing 100 and a circulation device 200.
[0028] The evaporator housing 100 is a hollow box shape and has a heat exchange chamber 110. Air outlets 120 and air inlets 130 are respectively provided on the front and rear sides of the evaporator housing, both of which are connected to the heat exchange chamber 110, allowing air to pass through the heat exchange chamber 110 from back to front. A circulation device 200 is located inside the heat exchange chamber 110 and includes multiple heat exchange tubes 210. A spray device 300 for spraying antifreeze is provided above the circulation device 200, and a recovery port 140 is provided at the lower end of the evaporator housing 100. The recovery port 140 is connected to the spray device 300 via a circulation pump.
[0029] In actual use, air enters the heat exchange chamber 110 of the evaporator 100 through the air inlet 130 and is discharged from the air outlet 120. Within the heat exchange chamber 110, the air absorbs heat and cools down through the heat exchange tubes 210 of the circulation device 200 to achieve cold storage refrigeration. The spray device 300 sprays antifreeze onto the circulation device 200 below. The antifreeze can be recovered and reused through the recovery port 140, solving the problem of ice and frost forming on the outside of the heat exchange tubes 210, which affects refrigeration efficiency and avoids energy waste. The cold storage anti-icing evaporator provided by this utility model sprays antifreeze onto the heat exchange tubes 210 of the circulation device 200 through the spray device 300. The low-freezing-point antifreeze carries away condensate, preventing ice or frost from forming on the surface of the heat exchange tubes 210.
[0030] The air outlet 120 is shaped like a flared mouth, narrower at the front and wider at the back, and is equipped with an exhaust fan. The flared shape of the air outlet 120 offers significant advantages in airflow and distribution, helping to cover a larger space and reduce ventilation dead zones. The front end of the air outlet 120 is a circular opening, and the exhaust fan is a circular fan.
[0031] In this embodiment, the evaporator housing 100 is a sheet metal product and has a cuboid shape. There are two air outlets 120, which are arranged side by side on the front end face of the evaporator housing 100 and protrude forward from the front end face of the evaporator housing 100.
[0032] To collect the antifreeze, the lower end face of the evaporator 100 in this embodiment is funnel-shaped, and the recovery port 140 is located at the lowest point of the lower end face of the evaporator 100. In actual use, the antifreeze can flow downwards under the action of gravity, thus falling to the lower end of the heat exchange chamber 110 and converging along the lower end face of the evaporator 100 to the recovery port 140 for recovery.
[0033] Antifreeze generally consists of a base fluid and additives. The base fluid can be made of ethylene glycol or propylene glycol, which can remain liquid at extremely low temperatures to prevent the evaporator from freezing and remain stable at high temperatures to prevent boiling. Additives, such as corrosion inhibitors and buffers, can protect the metal parts in the evaporator, prevent rust, reduce scale formation, and maintain the efficient operation of the evaporator.
[0034] The lower end of the spray device 300 is provided with a plurality of downward-facing nozzles, which are evenly distributed and arranged above the circulation device 200. The rear end of the spray device 300 is provided with a liquid inlet pipe 310, which passes through the rear side of the evaporation chamber 100 and is connected to the plurality of nozzles.
[0035] The recovery port 140 is connected to the circulation pump via a pipe. The circulation pump delivers the recovered antifreeze to the inlet pipe 310, enabling the spray device 300 to spray the circulation device 200. In a further embodiment, a drying cylinder is provided between the recovery port 140 and the circulation pump. The antifreeze is transported along the drying cylinder to separate the condensate in the antifreeze, preventing it from affecting the antifreeze effect. Treating the antifreeze with the drying cylinder allows for rapid absorption of moisture, is relatively simple to operate, and effectively separates and quickly removes moisture during the antifreeze circulation process.
[0036] In this embodiment, a connecting frame 150 is provided at the upper end of the evaporator body 100. The connecting frames 150 are fixedly arranged in pairs on the left and right sides of the upper end of the evaporator body 100. The connecting frames 150 can fix the evaporator body 100 at the upper end, thereby solving the problem that the funnel-shaped lower end face of the evaporator body 100 is inconvenient to fix.
[0037] The air inlet 130 is equipped with a water-absorbing filter 160. The water-absorbing filter 160 is made of water-absorbing material. Specifically, the water-absorbing filter 160 is plate-shaped and includes an outer box and a water-absorbing filter element. The outer box has a porous, perforated structure, and the water-absorbing filter element is disposed within the outer box. The water-absorbing filter element can be made of natural or synthetic fiber material, or it can be made of highly absorbent polymer materials such as sodium polyacrylate or polyvinyl alcohol, or it can be made of porous materials such as sponge, activated carbon, or silica gel.
[0038] When the air in the cold storage enters the heat exchange chamber 110 inside the evaporator through the air inlet 130, it can absorb moisture through the water absorption filter 160, thereby reducing the humidity of the air entering the heat exchange chamber 110 and reducing the possibility of high humidity water vapor entering the heat exchange chamber 110 and condensing on the surface of the heat exchange tube 210.
[0039] In this embodiment, the water-absorbing filter 160 is detachably mounted on the air inlet 130. Specifically, the air inlet 130 has left-right extending slots on both its upper and lower sides, and the upper and lower ends of the water-absorbing filter 160 are respectively inserted into the two slots so that the water-absorbing filter 160 can be aligned front-to-back with the air inlet 130. When it is necessary to replace the water-absorbing filter 160, it can be pulled out along the slots. In some other embodiments, the slots can extend vertically and be arranged in pairs on the left and right ends of the air inlet 130. In other embodiments, the water-absorbing filter 160 can also be detachably connected by being locked to the evaporator housing 100 with screws.
[0040] In this embodiment, multiple heat exchange tubes 210 are arranged vertically, extending in a serpentine pattern. This serpentine shape increases the fluid flow path and heat exchange area, thereby improving heat exchange efficiency. Specifically, in the left-right projection, the heat exchange tubes 210 extend forward and backward along a "bow" shaped path. In the vertical projection, multiple segments of the forward-backward extending heat exchange tubes 210 are arranged at intervals along the left and right sides, with the front and rear ends of adjacent segments connected to form a "bow" shaped extension path in the left-right direction.
[0041] In this embodiment, the left side of the evaporator housing 100 is provided with a refrigerant inlet pipe 220 and a refrigerant outlet pipe 230, which are connected to the heat exchange tubes 210. A flow divider 221 is provided on the left side of the evaporator housing 100; the flow divider 221 is elongated and extends vertically. The refrigerant inlet pipe 220 is connected to the flow divider 221, and the multiple heat exchange tubes 210 arranged vertically are all connected to the flow divider 221.
[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0043] Although embodiments of the present invention have been shown and described, those skilled in the art can make various changes, modifications, substitutions and alterations to these embodiments without departing from the principles and spirit of the present invention. All such changes, modifications, equivalent alterations or substitutions are included within the scope defined by the claims of this application, and the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A frost-proof evaporator for a cold store, characterised in that: include: Evaporator housing and circulation system; The evaporator has a hollow heat exchange chamber. The front and rear sides of the evaporator are respectively provided with an air outlet and an air inlet that connect to the heat exchange chamber. The circulation device is located inside the heat exchange chamber and includes multiple heat exchange tubes. A spray device for spraying antifreeze is provided above the circulation device. A recovery port is provided at the lower end of the evaporator. The recovery port and the spray device are connected to the spray device through a circulation pump.
2. The anti-icing evaporator of claim 1, wherein: The air outlet is shaped like a flared mouth, narrow at the front and wide at the back, and is equipped with an air outlet fan.
3. The anti-icing evaporator of claim 2, wherein: The evaporator box is rectangular in shape, and the air outlet protrudes forward and outward from the front end face of the evaporator box.
4. The anti-icing evaporator of claim 3, wherein: The lower end face of the evaporator is funnel-shaped, and the recovery port is located at the lowest point of the lower end face of the evaporator.
5. The anti-icing evaporator of claim 4, wherein: The upper end of the evaporator is provided with a connecting frame, which is fixedly installed in pairs on the left and right sides at the upper end of the evaporator.
6. The anti-icing evaporator of claim 1, wherein: The air inlet is detachably equipped with a water-absorbing filter screen, which is made of water-absorbing material.
7. The anti-icing evaporator of claim 6, wherein: The water-absorbing filter is plate-shaped and includes a porous outer box and a water-absorbing filter element disposed within the outer box.
8. The anti-icing evaporator of claim 7, wherein: The air inlet has a pair of slots on both sides, and the two ends of the water-absorbing filter are respectively inserted into the two slots.
9. The cold storage anti-icing evaporator according to claim 1, characterized in that: Multiple heat exchange tubes are arranged vertically, and the heat exchange tubes extend in a serpentine bend.
10. The anti-icing evaporator of claim 9, wherein: The evaporator box is provided with a refrigerant inlet pipe and a refrigerant outlet pipe on the left or right side, which are connected to the heat exchange tube.