SU1295166A1 - Thaw indicator - Google Patents

Abstract

The invention relates to refrigeration equipment, namely, defrosting indicators for household freezers and refrigerators, and provides convenience when using the indicator. The indicator is preliminarily frozen and set to low / 777 ////// FIG. i the cooling chamber so that the freezing water is in the upper part of the cavity of the housing 1. When the air temperature in the chamber rises to 0 ° C and higher, for example, during emergency operation, the ice in the indicator starts to melt, while water flows to the bottom housing 1, and ice as it moves downwards, gradually passing the indicator marks, allowing us to estimate the time during which the temperature in the refrigerating chamber was greater than 0 ° C. If the defrost duration is significant, the ice in the indicator melts completely, turning into water. When the cold room switches to normal operation, the water freezes, after which the indicator is turned upside down and it is ready for operation again. 4 il. from the next CD on: 05 /

Description

The invention relates to refrigeration equipment, namely, defrosting indicators for low-temperature chambers of freezers and refrigerators, primarily for domestic use.

The purpose of the invention is to provide ease of operation.

FIG. Figure 1 shows schematically the proposed defrost indicator, in the initial position; in fig. 2-4 - the same, in different phases of the indicator.

The defrosting indicator comprises a transparent body 1 (Fig. 1) made of a transparent polymeric material, for example, polyethylene. The housing 1 consists of two parts, the inner surface of each of which has the shape of a truncated cone, and both parts are connected to each other in the zone of smaller bases. The internal volume of the body is a geometric figure with a horizontal axis of symmetry. On the outer surface of the housing 1 there are horizontal indicator marks 2. The indicator is partially filled with liquid 3 with a freezing point of 0 ° C, for example, tinted water.

The proposed defrost indicator works as follows.

The indicator is preliminarily frozen and installed in a low-temperature chamber so that the freezing water is in the upper part of the cavity of housing 1 (Fig. 2a).

When the air temperature in the chamber rises to 0 ° C and higher, for example, during emergency operation, the ice in the indicator starts to melt, while water flows to the bottom of the indicator, and the ice moves downwards, gradually passing the indicator marks (Fig. 26), allowing to estimate the time during which the temperature in the refrigerating chamber was above 0 ° C. If the defrost time is significant, the ice in the indicator melts completely, turning into water (Fig. 2c). When the cold room switches to normal operation, the water freezes (Fig. 2d), after which

turn the indicator (fig. 2d) and it is ready to work again.

Short-term re-cooling of the refrigerating chamber is possible (Fig. 3). The ice in the indicator installed in the working position (Fig. 3A) begins to thaw (Fig. 36), while if the temperature in the refrigerating chamber again drops below 0 ° C, the water in the indicator freezes (Fig. 3). The indicator must then be flipped f set to its original (working) position (Fig. 3g).

During the next freezing of the camera, the indicator works as follows (Fig. 4).

The ice in the indicator (Fig. 4a) starts to thaw and the ice mass, located in the lower part of the indicator, falls to the bottom of the hull (Fig. 46). The indicator works in the usual way - the ice gradually melts (Fig. 4c, d) and if the camera switches to cooling mode, the water in the indicator freezes (Fig. 4e), after which the indicator is set to the working position (Fig. 4e).

The fact of defrosting the refrigerator compartment and the time during which the chamber is defrosted is determined on the basis of the position of ice in the upper part of the housing 1.

The proposed defrost indicator design provides simplicity and ease of operation.

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Claims (1)

Invention Formula The defrosting indicator is primarily for domestic freezers and refrigerators containing hollow a body with horizontal marks and partially filled with water, characterized in that, for ease of operation, the body consists of two equal parts, each of which is made of a transparent material and its inner surface is a truncated cone, with both parts connected between in the zone of the smaller bases of the internal surfaces. but Phi 2 but 66 of FIG. five but ///////// e Srig.